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8c3f67ddfc
gecko/widget/windows/nsWindow.cpp
Wes Kocher 8c3f67ddfc Backed out 9 changesets (bug 602787) on suspicion of breaking mochitest-metro on a CLOSED TREE 
Backed out changeset 1730bcae2c45 (bug 602787)
Backed out changeset 70606b9b1e42 (bug 602787)
Backed out changeset 57ca2861ea30 (bug 602787)
Backed out changeset 3b9f1062d915 (bug 602787)
Backed out changeset 3ee56eacc84b (bug 602787)
Backed out changeset 1c35693be3d3 (bug 602787)
Backed out changeset ef095c3aef98 (bug 602787)
Backed out changeset 4827bdae97fd (bug 602787)
Backed out changeset fa0f355e7871 (bug 602787)
2013-10-22 13:11:53 -04:00

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:set ts=2 sts=2 sw=2 et cin: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/*
* nsWindow - Native window management and event handling.
*
* nsWindow is organized into a set of major blocks and
* block subsections. The layout is as follows:
*
* Includes
* Variables
* nsIWidget impl.
* nsIWidget methods and utilities
* nsSwitchToUIThread impl.
* nsSwitchToUIThread methods and utilities
* Moz events
* Event initialization
* Event dispatching
* Native events
* Wndproc(s)
* Event processing
* OnEvent event handlers
* IME management and accessibility
* Transparency
* Popup hook handling
* Misc. utilities
* Child window impl.
*
* Search for "BLOCK:" to find major blocks.
* Search for "SECTION:" to find specific sections.
*
* Blocks should be split out into separate files if they
* become unmanageable.
*
* Related source:
*
* nsWindowDefs.h - Definitions, macros, structs, enums
* and general setup.
* nsWindowDbg.h/.cpp - Debug related code and directives.
* nsWindowGfx.h/.cpp - Graphics and painting.
*
*/
/**************************************************************
**************************************************************
**
** BLOCK: Includes
**
** Include headers.
**
**************************************************************
**************************************************************/
#include "mozilla/MathAlgorithms.h"
#include "mozilla/MiscEvents.h"
#include "mozilla/MouseEvents.h"
#include "mozilla/TouchEvents.h"
#include "mozilla/Util.h"
#include "mozilla/ipc/MessageChannel.h"
#include <algorithm>
#include "nsWindow.h"
#include <shellapi.h>
#include <windows.h>
#include <process.h>
#include <commctrl.h>
#include <unknwn.h>
#include <psapi.h>
#include "prlog.h"
#include "prtime.h"
#include "prprf.h"
#include "prmem.h"
#include "prenv.h"
#include "mozilla/WidgetTraceEvent.h"
#include "nsIAppShell.h"
#include "nsISupportsPrimitives.h"
#include "nsIDOMMouseEvent.h"
#include "nsITheme.h"
#include "nsIObserverService.h"
#include "nsIScreenManager.h"
#include "imgIContainer.h"
#include "nsIFile.h"
#include "nsIRollupListener.h"
#include "nsIServiceManager.h"
#include "nsIClipboard.h"
#include "nsIMM32Handler.h"
#include "WinMouseScrollHandler.h"
#include "nsFontMetrics.h"
#include "nsIFontEnumerator.h"
#include "nsFont.h"
#include "nsRect.h"
#include "nsThreadUtils.h"
#include "nsNativeCharsetUtils.h"
#include "nsGkAtoms.h"
#include "nsCRT.h"
#include "nsAppDirectoryServiceDefs.h"
#include "nsXPIDLString.h"
#include "nsWidgetsCID.h"
#include "nsTHashtable.h"
#include "nsHashKeys.h"
#include "nsString.h"
#include "mozilla/Services.h"
#include "nsNativeThemeWin.h"
#include "nsWindowsDllInterceptor.h"
#include "nsLayoutUtils.h"
#include "nsView.h"
#include "nsIWindowMediator.h"
#include "nsIServiceManager.h"
#include "nsWindowGfx.h"
#include "gfxWindowsPlatform.h"
#include "Layers.h"
#include "nsPrintfCString.h"
#include "mozilla/Preferences.h"
#include "nsISound.h"
#include "WinTaskbar.h"
#include "WinUtils.h"
#include "WidgetUtils.h"
#include "nsIWidgetListener.h"
#include "mozilla/dom/Touch.h"
#include "mozilla/gfx/2D.h"
#ifdef MOZ_ENABLE_D3D9_LAYER
#include "LayerManagerD3D9.h"
#endif
#ifdef MOZ_ENABLE_D3D10_LAYER
#include "LayerManagerD3D10.h"
#endif
#include "LayerManagerOGL.h"
#include "nsIGfxInfo.h"
#include "nsUXThemeConstants.h"
#include "KeyboardLayout.h"
#include "nsNativeDragTarget.h"
#include <mmsystem.h> // needed for WIN32_LEAN_AND_MEAN
#include <zmouse.h>
#include <richedit.h>
#if defined(ACCESSIBILITY)
#ifdef DEBUG
#include "mozilla/a11y/Logging.h"
#endif
#include "oleidl.h"
#include <winuser.h>
#include "nsAccessibilityService.h"
#include "mozilla/a11y/DocAccessible.h"
#include "mozilla/a11y/Platform.h"
#if !defined(WINABLEAPI)
#include <winable.h>
#endif // !defined(WINABLEAPI)
#endif // defined(ACCESSIBILITY)
#include "nsIWinTaskbar.h"
#define NS_TASKBAR_CONTRACTID "@mozilla.org/windows-taskbar;1"
#include "nsWindowDefs.h"
#include "nsCrashOnException.h"
#include "nsIXULRuntime.h"
#include "nsIContent.h"
#include "mozilla/HangMonitor.h"
#include "WinIMEHandler.h"
using namespace mozilla;
using namespace mozilla::dom;
using namespace mozilla::layers;
using namespace mozilla::widget;
/**************************************************************
**************************************************************
**
** BLOCK: Variables
**
** nsWindow Class static initializations and global variables.
**
**************************************************************
**************************************************************/
/**************************************************************
*
* SECTION: nsWindow statics
*
**************************************************************/
bool nsWindow::sDropShadowEnabled = true;
uint32_t nsWindow::sInstanceCount = 0;
bool nsWindow::sSwitchKeyboardLayout = false;
BOOL nsWindow::sIsOleInitialized = FALSE;
HCURSOR nsWindow::sHCursor = nullptr;
imgIContainer* nsWindow::sCursorImgContainer = nullptr;
nsWindow* nsWindow::sCurrentWindow = nullptr;
bool nsWindow::sJustGotDeactivate = false;
bool nsWindow::sJustGotActivate = false;
bool nsWindow::sIsInMouseCapture = false;
// imported in nsWidgetFactory.cpp
TriStateBool nsWindow::sCanQuit = TRI_UNKNOWN;
// Hook Data Memebers for Dropdowns. sProcessHook Tells the
// hook methods whether they should be processing the hook
// messages.
HHOOK nsWindow::sMsgFilterHook = nullptr;
HHOOK nsWindow::sCallProcHook = nullptr;
HHOOK nsWindow::sCallMouseHook = nullptr;
bool nsWindow::sProcessHook = false;
UINT nsWindow::sRollupMsgId = 0;
HWND nsWindow::sRollupMsgWnd = nullptr;
UINT nsWindow::sHookTimerId = 0;
// Mouse Clicks - static variable definitions for figuring
// out 1 - 3 Clicks.
POINT nsWindow::sLastMousePoint = {0};
POINT nsWindow::sLastMouseMovePoint = {0};
LONG nsWindow::sLastMouseDownTime = 0L;
LONG nsWindow::sLastClickCount = 0L;
BYTE nsWindow::sLastMouseButton = 0;
// Trim heap on minimize. (initialized, but still true.)
int nsWindow::sTrimOnMinimize = 2;
// Default value for general window class (used when the pref is the empty string).
const char* nsWindow::sDefaultMainWindowClass = kClassNameGeneral;
// If we're using D3D9, this will not be allowed during initial 5 seconds.
bool nsWindow::sAllowD3D9 = false;
TriStateBool nsWindow::sHasBogusPopupsDropShadowOnMultiMonitor = TRI_UNKNOWN;
// Used in OOPP plugin focus processing.
const PRUnichar* kOOPPPluginFocusEventId = L"OOPP Plugin Focus Widget Event";
uint32_t nsWindow::sOOPPPluginFocusEvent =
RegisterWindowMessageW(kOOPPPluginFocusEventId);
/**************************************************************
*
* SECTION: globals variables
*
**************************************************************/
static const char *sScreenManagerContractID = "@mozilla.org/gfx/screenmanager;1";
#ifdef PR_LOGGING
PRLogModuleInfo* gWindowsLog = nullptr;
#endif
// Global used in Show window enumerations.
static bool gWindowsVisible = false;
// True if we have sent a notification that we are suspending/sleeping.
static bool gIsSleepMode = false;
static NS_DEFINE_CID(kCClipboardCID, NS_CLIPBOARD_CID);
// General purpose user32.dll hook object
static WindowsDllInterceptor sUser32Intercept;
// 2 pixel offset for eTransparencyBorderlessGlass which equals the size of
// the default window border Windows paints. Glass will be extended inward
// this distance to remove the border.
static const int32_t kGlassMarginAdjustment = 2;
// When the client area is extended out into the default window frame area,
// this is the minimum amount of space along the edge of resizable windows
// we will always display a resize cursor in, regardless of the underlying
// content.
static const int32_t kResizableBorderMinSize = 3;
// We should never really try to accelerate windows bigger than this. In some
// cases this might lead to no D3D9 acceleration where we could have had it
// but D3D9 does not reliably report when it supports bigger windows. 8192
// is as safe as we can get, we know at least D3D10 hardware always supports
// this, other hardware we expect to report correctly in D3D9.
#define MAX_ACCELERATED_DIMENSION 8192
// On window open (as well as after), Windows has an unfortunate habit of
// sending rather a lot of WM_NCHITTEST messages. Because we have to do point
// to DOM target conversions for these, we cache responses for a given
// coordinate this many milliseconds:
#define HITTEST_CACHE_LIFETIME_MS 50
/**************************************************************
**************************************************************
**
** BLOCK: nsIWidget impl.
**
** nsIWidget interface implementation, broken down into
** sections.
**
**************************************************************
**************************************************************/
/**************************************************************
*
* SECTION: nsWindow construction and destruction
*
**************************************************************/
nsWindow::nsWindow() : nsWindowBase()
{
#ifdef PR_LOGGING
if (!gWindowsLog) {
gWindowsLog = PR_NewLogModule("nsWindow");
}
#endif
mIconSmall = nullptr;
mIconBig = nullptr;
mWnd = nullptr;
mPaintDC = nullptr;
mCompositeDC = nullptr;
mPrevWndProc = nullptr;
mNativeDragTarget = nullptr;
mInDtor = false;
mIsVisible = false;
mIsTopWidgetWindow = false;
mUnicodeWidget = true;
mDisplayPanFeedback = false;
mTouchWindow = false;
mCustomNonClient = false;
mHideChrome = false;
mFullscreenMode = false;
mMousePresent = false;
mDestroyCalled = false;
mPickerDisplayCount = 0;
mWindowType = eWindowType_child;
mBorderStyle = eBorderStyle_default;
mOldSizeMode = nsSizeMode_Normal;
mLastSizeMode = nsSizeMode_Normal;
mLastSize.width = 0;
mLastSize.height = 0;
mOldStyle = 0;
mOldExStyle = 0;
mPainting = 0;
mLastKeyboardLayout = 0;
mBlurSuppressLevel = 0;
mLastPaintEndTime = TimeStamp::Now();
mCachedHitTestPoint.x = 0;
mCachedHitTestPoint.y = 0;
mCachedHitTestTime = TimeStamp::Now();
mCachedHitTestResult = 0;
#ifdef MOZ_XUL
mTransparentSurface = nullptr;
mMemoryDC = nullptr;
mTransparencyMode = eTransparencyOpaque;
memset(&mGlassMargins, 0, sizeof mGlassMargins);
#endif
mBackground = ::GetSysColor(COLOR_BTNFACE);
mBrush = ::CreateSolidBrush(NSRGB_2_COLOREF(mBackground));
mForeground = ::GetSysColor(COLOR_WINDOWTEXT);
mTaskbarPreview = nullptr;
mHasTaskbarIconBeenCreated = false;
// Global initialization
if (!sInstanceCount) {
// Global app registration id for Win7 and up. See
// WinTaskbar.cpp for details.
mozilla::widget::WinTaskbar::RegisterAppUserModelID();
KeyboardLayout::GetInstance()->OnLayoutChange(::GetKeyboardLayout(0));
IMEHandler::Initialize();
if (SUCCEEDED(::OleInitialize(nullptr))) {
sIsOleInitialized = TRUE;
}
NS_ASSERTION(sIsOleInitialized, "***** OLE is not initialized!\n");
MouseScrollHandler::Initialize();
// Init titlebar button info for custom frames.
nsUXThemeData::InitTitlebarInfo();
// Init theme data
nsUXThemeData::UpdateNativeThemeInfo();
RedirectedKeyDownMessageManager::Forget();
} // !sInstanceCount
mIdleService = nullptr;
sInstanceCount++;
}
nsWindow::~nsWindow()
{
mInDtor = true;
// If the widget was released without calling Destroy() then the native window still
// exists, and we need to destroy it. This will also result in a call to OnDestroy.
//
// XXX How could this happen???
if (nullptr != mWnd)
Destroy();
// Free app icon resources. This must happen after `OnDestroy` (see bug 708033).
if (mIconSmall)
::DestroyIcon(mIconSmall);
if (mIconBig)
::DestroyIcon(mIconBig);
sInstanceCount--;
// Global shutdown
if (sInstanceCount == 0) {
IMEHandler::Terminate();
NS_IF_RELEASE(sCursorImgContainer);
if (sIsOleInitialized) {
::OleFlushClipboard();
::OleUninitialize();
sIsOleInitialized = FALSE;
}
}
NS_IF_RELEASE(mNativeDragTarget);
}
NS_IMPL_ISUPPORTS_INHERITED0(nsWindow, nsBaseWidget)
/**************************************************************
*
* SECTION: nsIWidget::Create, nsIWidget::Destroy
*
* Creating and destroying windows for this widget.
*
**************************************************************/
// Allow Derived classes to modify the height that is passed
// when the window is created or resized.
int32_t nsWindow::GetHeight(int32_t aProposedHeight)
{
return aProposedHeight;
}
// Create the proper widget
nsresult
nsWindow::Create(nsIWidget *aParent,
nsNativeWidget aNativeParent,
const nsIntRect &aRect,
nsDeviceContext *aContext,
nsWidgetInitData *aInitData)
{
nsWidgetInitData defaultInitData;
if (!aInitData)
aInitData = &defaultInitData;
mUnicodeWidget = aInitData->mUnicode;
nsIWidget *baseParent = aInitData->mWindowType == eWindowType_dialog ||
aInitData->mWindowType == eWindowType_toplevel ||
aInitData->mWindowType == eWindowType_invisible ?
nullptr : aParent;
mIsTopWidgetWindow = (nullptr == baseParent);
mBounds = aRect;
// Ensure that the toolkit is created.
nsToolkit::GetToolkit();
BaseCreate(baseParent, aRect, aContext, aInitData);
HWND parent;
if (aParent) { // has a nsIWidget parent
parent = aParent ? (HWND)aParent->GetNativeData(NS_NATIVE_WINDOW) : nullptr;
mParent = aParent;
} else { // has a nsNative parent
parent = (HWND)aNativeParent;
mParent = aNativeParent ?
WinUtils::GetNSWindowPtr((HWND)aNativeParent) : nullptr;
}
mIsRTL = aInitData->mRTL;
DWORD style = WindowStyle();
DWORD extendedStyle = WindowExStyle();
if (mWindowType == eWindowType_popup) {
if (!aParent) {
parent = nullptr;
}
if (WinUtils::GetWindowsVersion() >= WinUtils::VISTA_VERSION &&
WinUtils::GetWindowsVersion() <= WinUtils::WIN7_VERSION &&
HasBogusPopupsDropShadowOnMultiMonitor()) {
extendedStyle |= WS_EX_COMPOSITED;
}
if (aInitData->mIsDragPopup) {
// This flag makes the window transparent to mouse events
extendedStyle |= WS_EX_TRANSPARENT;
}
} else if (mWindowType == eWindowType_invisible) {
// Make sure CreateWindowEx succeeds at creating a toplevel window
style &= ~0x40000000; // WS_CHILDWINDOW
} else {
// See if the caller wants to explictly set clip children and clip siblings
if (aInitData->clipChildren) {
style |= WS_CLIPCHILDREN;
} else {
style &= ~WS_CLIPCHILDREN;
}
if (aInitData->clipSiblings) {
style |= WS_CLIPSIBLINGS;
}
}
nsAutoString className;
if (aInitData->mDropShadow) {
GetWindowPopupClass(className);
} else {
GetWindowClass(className);
}
// Plugins are created in the disabled state so that they can't
// steal focus away from our main window. This is especially
// important if the plugin has loaded in a background tab.
if(aInitData->mWindowType == eWindowType_plugin) {
style |= WS_DISABLED;
}
mWnd = ::CreateWindowExW(extendedStyle,
className.get(),
L"",
style,
aRect.x,
aRect.y,
aRect.width,
GetHeight(aRect.height),
parent,
nullptr,
nsToolkit::mDllInstance,
nullptr);
if (!mWnd) {
NS_WARNING("nsWindow CreateWindowEx failed.");
return NS_ERROR_FAILURE;
}
if (mIsRTL && WinUtils::dwmSetWindowAttributePtr) {
DWORD dwAttribute = TRUE;
WinUtils::dwmSetWindowAttributePtr(mWnd, DWMWA_NONCLIENT_RTL_LAYOUT, &dwAttribute, sizeof dwAttribute);
}
if (mWindowType != eWindowType_plugin &&
mWindowType != eWindowType_invisible &&
MouseScrollHandler::Device::IsFakeScrollableWindowNeeded()) {
// Ugly Thinkpad Driver Hack (Bugs 507222 and 594977)
//
// We create two zero-sized windows as descendants of the top-level window,
// like so:
//
// Top-level window (MozillaWindowClass)
// FAKETRACKPOINTSCROLLCONTAINER (MozillaWindowClass)
// FAKETRACKPOINTSCROLLABLE (MozillaWindowClass)
//
// We need to have the middle window, otherwise the Trackpoint driver
// will fail to deliver scroll messages. WM_MOUSEWHEEL messages are
// sent to the FAKETRACKPOINTSCROLLABLE, which then propagate up the
// window hierarchy until they are handled by nsWindow::WindowProc.
// WM_HSCROLL messages are also sent to the FAKETRACKPOINTSCROLLABLE,
// but these do not propagate automatically, so we have the window
// procedure pretend that they were dispatched to the top-level window
// instead.
//
// The FAKETRACKPOINTSCROLLABLE needs to have the specific window styles it
// is given below so that it catches the Trackpoint driver's heuristics.
HWND scrollContainerWnd = ::CreateWindowW
(className.get(), L"FAKETRACKPOINTSCROLLCONTAINER",
WS_CHILD | WS_VISIBLE,
0, 0, 0, 0, mWnd, nullptr, nsToolkit::mDllInstance, nullptr);
HWND scrollableWnd = ::CreateWindowW
(className.get(), L"FAKETRACKPOINTSCROLLABLE",
WS_CHILD | WS_VISIBLE | WS_VSCROLL | WS_TABSTOP | 0x30,
0, 0, 0, 0, scrollContainerWnd, nullptr, nsToolkit::mDllInstance,
nullptr);
// Give the FAKETRACKPOINTSCROLLABLE window a specific ID so that
// WindowProcInternal can distinguish it from the top-level window
// easily.
::SetWindowLongPtrW(scrollableWnd, GWLP_ID, eFakeTrackPointScrollableID);
// Make FAKETRACKPOINTSCROLLABLE use nsWindow::WindowProc, and store the
// old window procedure in its "user data".
WNDPROC oldWndProc;
if (mUnicodeWidget)
oldWndProc = (WNDPROC)::SetWindowLongPtrW(scrollableWnd, GWLP_WNDPROC,
(LONG_PTR)nsWindow::WindowProc);
else
oldWndProc = (WNDPROC)::SetWindowLongPtrA(scrollableWnd, GWLP_WNDPROC,
(LONG_PTR)nsWindow::WindowProc);
::SetWindowLongPtrW(scrollableWnd, GWLP_USERDATA, (LONG_PTR)oldWndProc);
}
SubclassWindow(TRUE);
IMEHandler::InitInputContext(this, mInputContext);
// If the internal variable set by the config.trim_on_minimize pref has not
// been initialized, and if this is the hidden window (conveniently created
// before any visible windows, and after the profile has been initialized),
// do some initialization work.
if (sTrimOnMinimize == 2 && mWindowType == eWindowType_invisible) {
// Our internal trim prevention logic is effective on 2K/XP at maintaining
// the working set when windows are minimized, but on Vista and up it has
// little to no effect. Since this feature has been the source of numerous
// bugs over the years, disable it (sTrimOnMinimize=1) on Vista and up.
sTrimOnMinimize =
Preferences::GetBool("config.trim_on_minimize",
(WinUtils::GetWindowsVersion() >= WinUtils::VISTA_VERSION)) ? 1 : 0;
sSwitchKeyboardLayout =
Preferences::GetBool("intl.keyboard.per_window_layout", false);
}
// Query for command button metric data for rendering the titlebar. We
// only do this once on the first window.
if (mWindowType == eWindowType_toplevel &&
(!nsUXThemeData::sTitlebarInfoPopulatedThemed ||
!nsUXThemeData::sTitlebarInfoPopulatedAero)) {
nsUXThemeData::UpdateTitlebarInfo(mWnd);
}
return NS_OK;
}
// Close this nsWindow
NS_METHOD nsWindow::Destroy()
{
// WM_DESTROY has already fired, avoid calling it twice
if (mOnDestroyCalled)
return NS_OK;
// Don't destroy windows that have file pickers open, we'll tear these down
// later once the picker is closed.
mDestroyCalled = true;
if (mPickerDisplayCount)
return NS_OK;
// During the destruction of all of our children, make sure we don't get deleted.
nsCOMPtr<nsIWidget> kungFuDeathGrip(this);
/**
* On windows the LayerManagerOGL destructor wants the widget to be around for
* cleanup. It also would like to have the HWND intact, so we nullptr it here.
*/
if (mLayerManager) {
mLayerManager->Destroy();
}
mLayerManager = nullptr;
/* We should clear our cached resources now and not wait for the GC to
* delete the nsWindow. */
ClearCachedResources();
// The DestroyWindow function destroys the specified window. The function sends WM_DESTROY
// and WM_NCDESTROY messages to the window to deactivate it and remove the keyboard focus
// from it. The function also destroys the window's menu, flushes the thread message queue,
// destroys timers, removes clipboard ownership, and breaks the clipboard viewer chain (if
// the window is at the top of the viewer chain).
//
// If the specified window is a parent or owner window, DestroyWindow automatically destroys
// the associated child or owned windows when it destroys the parent or owner window. The
// function first destroys child or owned windows, and then it destroys the parent or owner
// window.
VERIFY(::DestroyWindow(mWnd));
// Our windows can be subclassed which may prevent us receiving WM_DESTROY. If OnDestroy()
// didn't get called, call it now.
if (false == mOnDestroyCalled) {
MSGResult msgResult;
mWindowHook.Notify(mWnd, WM_DESTROY, 0, 0, msgResult);
OnDestroy();
}
return NS_OK;
}
/**************************************************************
*
* SECTION: Window class utilities
*
* Utilities for calculating the proper window class name for
* Create window.
*
**************************************************************/
void nsWindow::RegisterWindowClass(const nsString& aClassName, UINT aExtraStyle,
LPWSTR aIconID)
{
WNDCLASSW wc;
if (::GetClassInfoW(nsToolkit::mDllInstance, aClassName.get(), &wc)) {
// already registered
return;
}
wc.style = CS_DBLCLKS | aExtraStyle;
wc.lpfnWndProc = ::DefWindowProcW;
wc.cbClsExtra = 0;
wc.cbWndExtra = 0;
wc.hInstance = nsToolkit::mDllInstance;
wc.hIcon = aIconID ? ::LoadIconW(::GetModuleHandleW(nullptr), aIconID) : nullptr;
wc.hCursor = nullptr;
wc.hbrBackground = mBrush;
wc.lpszMenuName = nullptr;
wc.lpszClassName = aClassName.get();
if (!::RegisterClassW(&wc)) {
// For older versions of Win32 (i.e., not XP), the registration may
// fail with aExtraStyle, so we have to re-register without it.
wc.style = CS_DBLCLKS;
::RegisterClassW(&wc);
}
}
static LPWSTR const gStockApplicationIcon = MAKEINTRESOURCEW(32512);
// Return the proper window class for everything except popups.
void nsWindow::GetWindowClass(nsString& aWindowClass)
{
switch (mWindowType) {
case eWindowType_invisible:
aWindowClass.AssignLiteral(kClassNameHidden);
RegisterWindowClass(aWindowClass, 0, gStockApplicationIcon);
break;
case eWindowType_dialog:
aWindowClass.AssignLiteral(kClassNameDialog);
RegisterWindowClass(aWindowClass, 0, 0);
break;
default:
GetMainWindowClass(aWindowClass);
RegisterWindowClass(aWindowClass, 0, gStockApplicationIcon);
break;
}
}
// Return the proper popup window class
void nsWindow::GetWindowPopupClass(nsString& aWindowClass)
{
aWindowClass.AssignLiteral(kClassNameDropShadow);
RegisterWindowClass(aWindowClass, CS_XP_DROPSHADOW, gStockApplicationIcon);
}
/**************************************************************
*
* SECTION: Window styles utilities
*
* Return the proper windows styles and extended styles.
*
**************************************************************/
// Return nsWindow styles
DWORD nsWindow::WindowStyle()
{
DWORD style;
switch (mWindowType) {
case eWindowType_plugin:
case eWindowType_child:
style = WS_OVERLAPPED;
break;
case eWindowType_dialog:
style = WS_OVERLAPPED | WS_BORDER | WS_DLGFRAME | WS_SYSMENU | DS_3DLOOK |
DS_MODALFRAME | WS_CLIPCHILDREN;
if (mBorderStyle != eBorderStyle_default)
style |= WS_THICKFRAME | WS_MINIMIZEBOX | WS_MAXIMIZEBOX;
break;
case eWindowType_popup:
style = WS_POPUP;
if (!HasGlass()) {
style |= WS_OVERLAPPED;
}
break;
default:
NS_ERROR("unknown border style");
// fall through
case eWindowType_toplevel:
case eWindowType_invisible:
style = WS_OVERLAPPED | WS_BORDER | WS_DLGFRAME | WS_SYSMENU |
WS_THICKFRAME | WS_MINIMIZEBOX | WS_MAXIMIZEBOX | WS_CLIPCHILDREN;
break;
}
if (mBorderStyle != eBorderStyle_default && mBorderStyle != eBorderStyle_all) {
if (mBorderStyle == eBorderStyle_none || !(mBorderStyle & eBorderStyle_border))
style &= ~WS_BORDER;
if (mBorderStyle == eBorderStyle_none || !(mBorderStyle & eBorderStyle_title)) {
style &= ~WS_DLGFRAME;
style |= WS_POPUP;
style &= ~WS_CHILD;
}
if (mBorderStyle == eBorderStyle_none || !(mBorderStyle & eBorderStyle_close))
style &= ~0;
// XXX The close box can only be removed by changing the window class,
// as far as I know --- roc+moz@cs.cmu.edu
if (mBorderStyle == eBorderStyle_none ||
!(mBorderStyle & (eBorderStyle_menu | eBorderStyle_close)))
style &= ~WS_SYSMENU;
// Looks like getting rid of the system menu also does away with the
// close box. So, we only get rid of the system menu if you want neither it
// nor the close box. How does the Windows "Dialog" window class get just
// closebox and no sysmenu? Who knows.
if (mBorderStyle == eBorderStyle_none || !(mBorderStyle & eBorderStyle_resizeh))
style &= ~WS_THICKFRAME;
if (mBorderStyle == eBorderStyle_none || !(mBorderStyle & eBorderStyle_minimize))
style &= ~WS_MINIMIZEBOX;
if (mBorderStyle == eBorderStyle_none || !(mBorderStyle & eBorderStyle_maximize))
style &= ~WS_MAXIMIZEBOX;
if (IsPopupWithTitleBar()) {
style |= WS_CAPTION;
if (mBorderStyle & eBorderStyle_close) {
style |= WS_SYSMENU;
}
}
}
VERIFY_WINDOW_STYLE(style);
return style;
}
// Return nsWindow extended styles
DWORD nsWindow::WindowExStyle()
{
switch (mWindowType)
{
case eWindowType_plugin:
case eWindowType_child:
return 0;
case eWindowType_dialog:
return WS_EX_WINDOWEDGE | WS_EX_DLGMODALFRAME;
case eWindowType_popup:
{
DWORD extendedStyle = WS_EX_TOOLWINDOW;
if (mPopupLevel == ePopupLevelTop)
extendedStyle |= WS_EX_TOPMOST;
return extendedStyle;
}
default:
NS_ERROR("unknown border style");
// fall through
case eWindowType_toplevel:
case eWindowType_invisible:
return WS_EX_WINDOWEDGE;
}
}
/**************************************************************
*
* SECTION: Window subclassing utilities
*
* Set or clear window subclasses on native windows. Used in
* Create and Destroy.
*
**************************************************************/
// Subclass (or remove the subclass from) this component's nsWindow
void nsWindow::SubclassWindow(BOOL bState)
{
if (bState) {
if (!mWnd || !IsWindow(mWnd)) {
NS_ERROR("Invalid window handle");
}
if (mUnicodeWidget) {
mPrevWndProc =
reinterpret_cast<WNDPROC>(
SetWindowLongPtrW(mWnd,
GWLP_WNDPROC,
reinterpret_cast<LONG_PTR>(nsWindow::WindowProc)));
} else {
mPrevWndProc =
reinterpret_cast<WNDPROC>(
SetWindowLongPtrA(mWnd,
GWLP_WNDPROC,
reinterpret_cast<LONG_PTR>(nsWindow::WindowProc)));
}
NS_ASSERTION(mPrevWndProc, "Null standard window procedure");
// connect the this pointer to the nsWindow handle
WinUtils::SetNSWindowBasePtr(mWnd, this);
} else {
if (IsWindow(mWnd)) {
if (mUnicodeWidget) {
SetWindowLongPtrW(mWnd,
GWLP_WNDPROC,
reinterpret_cast<LONG_PTR>(mPrevWndProc));
} else {
SetWindowLongPtrA(mWnd,
GWLP_WNDPROC,
reinterpret_cast<LONG_PTR>(mPrevWndProc));
}
}
WinUtils::SetNSWindowBasePtr(mWnd, nullptr);
mPrevWndProc = nullptr;
}
}
/**************************************************************
*
* SECTION: nsIWidget::SetParent, nsIWidget::GetParent
*
* Set or clear the parent widgets using window properties, and
* handles calculating native parent handles.
*
**************************************************************/
// Get and set parent widgets
NS_IMETHODIMP nsWindow::SetParent(nsIWidget *aNewParent)
{
mParent = aNewParent;
nsCOMPtr<nsIWidget> kungFuDeathGrip(this);
nsIWidget* parent = GetParent();
if (parent) {
parent->RemoveChild(this);
}
if (aNewParent) {
ReparentNativeWidget(aNewParent);
aNewParent->AddChild(this);
return NS_OK;
}
if (mWnd) {
// If we have no parent, SetParent should return the desktop.
VERIFY(::SetParent(mWnd, nullptr));
}
return NS_OK;
}
NS_IMETHODIMP
nsWindow::ReparentNativeWidget(nsIWidget* aNewParent)
{
NS_PRECONDITION(aNewParent, "");
mParent = aNewParent;
if (mWindowType == eWindowType_popup) {
return NS_OK;
}
HWND newParent = (HWND)aNewParent->GetNativeData(NS_NATIVE_WINDOW);
NS_ASSERTION(newParent, "Parent widget has a null native window handle");
if (newParent && mWnd) {
::SetParent(mWnd, newParent);
}
return NS_OK;
}
nsIWidget* nsWindow::GetParent(void)
{
return GetParentWindow(false);
}
float nsWindow::GetDPI()
{
HDC dc = ::GetDC(mWnd);
if (!dc)
return 96.0f;
double heightInches = ::GetDeviceCaps(dc, VERTSIZE)/MM_PER_INCH_FLOAT;
int heightPx = ::GetDeviceCaps(dc, VERTRES);
::ReleaseDC(mWnd, dc);
if (heightInches < 0.25) {
// Something's broken
return 96.0f;
}
return float(heightPx/heightInches);
}
double nsWindow::GetDefaultScaleInternal()
{
return gfxWindowsPlatform::GetPlatform()->GetDPIScale();
}
nsWindow*
nsWindow::GetParentWindow(bool aIncludeOwner)
{
return static_cast<nsWindow*>(GetParentWindowBase(aIncludeOwner));
}
nsWindowBase*
nsWindow::GetParentWindowBase(bool aIncludeOwner)
{
if (mIsTopWidgetWindow) {
// Must use a flag instead of mWindowType to tell if the window is the
// owned by the topmost widget, because a child window can be embedded inside
// a HWND which is not associated with a nsIWidget.
return nullptr;
}
// If this widget has already been destroyed, pretend we have no parent.
// This corresponds to code in Destroy which removes the destroyed
// widget from its parent's child list.
if (mInDtor || mOnDestroyCalled)
return nullptr;
// aIncludeOwner set to true implies walking the parent chain to retrieve the
// root owner. aIncludeOwner set to false implies the search will stop at the
// true parent (default).
nsWindow* widget = nullptr;
if (mWnd) {
HWND parent = nullptr;
if (aIncludeOwner)
parent = ::GetParent(mWnd);
else
parent = ::GetAncestor(mWnd, GA_PARENT);
if (parent) {
widget = WinUtils::GetNSWindowPtr(parent);
if (widget) {
// If the widget is in the process of being destroyed then
// do NOT return it
if (widget->mInDtor) {
widget = nullptr;
}
}
}
}
return static_cast<nsWindowBase*>(widget);
}
BOOL CALLBACK
nsWindow::EnumAllChildWindProc(HWND aWnd, LPARAM aParam)
{
nsWindow *wnd = WinUtils::GetNSWindowPtr(aWnd);
if (wnd) {
((nsWindow::WindowEnumCallback*)aParam)(wnd);
}
return TRUE;
}
BOOL CALLBACK
nsWindow::EnumAllThreadWindowProc(HWND aWnd, LPARAM aParam)
{
nsWindow *wnd = WinUtils::GetNSWindowPtr(aWnd);
if (wnd) {
((nsWindow::WindowEnumCallback*)aParam)(wnd);
}
EnumChildWindows(aWnd, EnumAllChildWindProc, aParam);
return TRUE;
}
void
nsWindow::EnumAllWindows(WindowEnumCallback aCallback)
{
EnumThreadWindows(GetCurrentThreadId(),
EnumAllThreadWindowProc,
(LPARAM)aCallback);
}
/**************************************************************
*
* SECTION: nsIWidget::Show
*
* Hide or show this component.
*
**************************************************************/
NS_METHOD nsWindow::Show(bool bState)
{
if (mWindowType == eWindowType_popup) {
// See bug 603793. When we try to draw D3D9/10 windows with a drop shadow
// without the DWM on a secondary monitor, windows fails to composite
// our windows correctly. We therefor switch off the drop shadow for
// pop-up windows when the DWM is disabled and two monitors are
// connected.
if (HasBogusPopupsDropShadowOnMultiMonitor() &&
WinUtils::GetMonitorCount() > 1 &&
!nsUXThemeData::CheckForCompositor())
{
if (sDropShadowEnabled) {
::SetClassLongA(mWnd, GCL_STYLE, 0);
sDropShadowEnabled = false;
}
} else {
if (!sDropShadowEnabled) {
::SetClassLongA(mWnd, GCL_STYLE, CS_DROPSHADOW);
sDropShadowEnabled = true;
}
}
// WS_EX_COMPOSITED conflicts with the WS_EX_LAYERED style and causes
// some popup menus to become invisible.
LONG_PTR exStyle = ::GetWindowLongPtrW(mWnd, GWL_EXSTYLE);
if (exStyle & WS_EX_LAYERED) {
::SetWindowLongPtrW(mWnd, GWL_EXSTYLE, exStyle & ~WS_EX_COMPOSITED);
}
}
bool syncInvalidate = false;
bool wasVisible = mIsVisible;
// Set the status now so that anyone asking during ShowWindow or
// SetWindowPos would get the correct answer.
mIsVisible = bState;
// We may have cached an out of date visible state. This can happen
// when session restore sets the full screen mode.
if (mIsVisible)
mOldStyle |= WS_VISIBLE;
else
mOldStyle &= ~WS_VISIBLE;
if (!mIsVisible && wasVisible) {
ClearCachedResources();
}
if (mWnd) {
if (bState) {
if (!wasVisible && mWindowType == eWindowType_toplevel) {
// speed up the initial paint after show for
// top level windows:
syncInvalidate = true;
switch (mSizeMode) {
case nsSizeMode_Fullscreen:
::ShowWindow(mWnd, SW_SHOW);
break;
case nsSizeMode_Maximized :
::ShowWindow(mWnd, SW_SHOWMAXIMIZED);
break;
case nsSizeMode_Minimized :
::ShowWindow(mWnd, SW_SHOWMINIMIZED);
break;
default:
if (CanTakeFocus()) {
::ShowWindow(mWnd, SW_SHOWNORMAL);
} else {
// Place the window behind the foreground window
// (as long as it is not topmost)
HWND wndAfter = ::GetForegroundWindow();
if (!wndAfter)
wndAfter = HWND_BOTTOM;
else if (GetWindowLongPtrW(wndAfter, GWL_EXSTYLE) & WS_EX_TOPMOST)
wndAfter = HWND_TOP;
::SetWindowPos(mWnd, wndAfter, 0, 0, 0, 0, SWP_SHOWWINDOW | SWP_NOSIZE |
SWP_NOMOVE | SWP_NOACTIVATE);
GetAttention(2);
}
break;
}
} else {
DWORD flags = SWP_NOSIZE | SWP_NOMOVE | SWP_SHOWWINDOW;
if (wasVisible)
flags |= SWP_NOZORDER;
if (mWindowType == eWindowType_popup) {
// ensure popups are the topmost of the TOPMOST
// layer. Remember not to set the SWP_NOZORDER
// flag as that might allow the taskbar to overlap
// the popup.
flags |= SWP_NOACTIVATE;
HWND owner = ::GetWindow(mWnd, GW_OWNER);
::SetWindowPos(mWnd, owner ? 0 : HWND_TOPMOST, 0, 0, 0, 0, flags);
} else {
if (mWindowType == eWindowType_dialog && !CanTakeFocus())
flags |= SWP_NOACTIVATE;
::SetWindowPos(mWnd, HWND_TOP, 0, 0, 0, 0, flags);
}
}
if (!wasVisible && (mWindowType == eWindowType_toplevel || mWindowType == eWindowType_dialog)) {
// when a toplevel window or dialog is shown, initialize the UI state
::SendMessageW(mWnd, WM_CHANGEUISTATE, MAKEWPARAM(UIS_INITIALIZE, UISF_HIDEFOCUS | UISF_HIDEACCEL), 0);
}
} else {
// Clear contents to avoid ghosting of old content if we display
// this window again.
if (wasVisible && mTransparencyMode == eTransparencyTransparent) {
ClearTranslucentWindow();
}
if (mWindowType != eWindowType_dialog) {
::ShowWindow(mWnd, SW_HIDE);
} else {
::SetWindowPos(mWnd, 0, 0, 0, 0, 0, SWP_HIDEWINDOW | SWP_NOSIZE | SWP_NOMOVE |
SWP_NOZORDER | SWP_NOACTIVATE);
}
}
}
#ifdef MOZ_XUL
if (!wasVisible && bState) {
Invalidate();
if (syncInvalidate && !mInDtor && !mOnDestroyCalled) {
::UpdateWindow(mWnd);
}
}
#endif
return NS_OK;
}
/**************************************************************
*
* SECTION: nsIWidget::IsVisible
*
* Returns the visibility state.
*
**************************************************************/
// Return true if the whether the component is visible, false otherwise
bool nsWindow::IsVisible() const
{
return mIsVisible;
}
/**************************************************************
*
* SECTION: Window clipping utilities
*
* Used in Size and Move operations for setting the proper
* window clipping regions for window transparency.
*
**************************************************************/
// XP and Vista visual styles sometimes require window clipping regions to be applied for proper
// transparency. These routines are called on size and move operations.
void nsWindow::ClearThemeRegion()
{
if (WinUtils::GetWindowsVersion() >= WinUtils::VISTA_VERSION &&
!HasGlass() &&
(mWindowType == eWindowType_popup && !IsPopupWithTitleBar() &&
(mPopupType == ePopupTypeTooltip || mPopupType == ePopupTypePanel))) {
SetWindowRgn(mWnd, nullptr, false);
}
}
void nsWindow::SetThemeRegion()
{
// Popup types that have a visual styles region applied (bug 376408). This can be expanded
// for other window types as needed. The regions are applied generically to the base window
// so default constants are used for part and state. At some point we might need part and
// state values from nsNativeThemeWin's GetThemePartAndState, but currently windows that
// change shape based on state haven't come up.
if (WinUtils::GetWindowsVersion() >= WinUtils::VISTA_VERSION &&
!HasGlass() &&
(mWindowType == eWindowType_popup && !IsPopupWithTitleBar() &&
(mPopupType == ePopupTypeTooltip || mPopupType == ePopupTypePanel))) {
HRGN hRgn = nullptr;
RECT rect = {0,0,mBounds.width,mBounds.height};
HDC dc = ::GetDC(mWnd);
GetThemeBackgroundRegion(nsUXThemeData::GetTheme(eUXTooltip), dc, TTP_STANDARD, TS_NORMAL, &rect, &hRgn);
if (hRgn) {
if (!SetWindowRgn(mWnd, hRgn, false)) // do not delete or alter hRgn if accepted.
DeleteObject(hRgn);
}
::ReleaseDC(mWnd, dc);
}
}
/**************************************************************
*
* SECTION: nsIWidget::RegisterTouchWindow,
* nsIWidget::UnregisterTouchWindow, and helper functions
*
* Used to register the native window to receive touch events
*
**************************************************************/
NS_METHOD nsWindow::RegisterTouchWindow() {
if (Preferences::GetInt("dom.w3c_touch_events.enabled", 0)) {
mTouchWindow = true;
mGesture.RegisterTouchWindow(mWnd);
::EnumChildWindows(mWnd, nsWindow::RegisterTouchForDescendants, 0);
}
return NS_OK;
}
NS_METHOD nsWindow::UnregisterTouchWindow() {
mTouchWindow = false;
mGesture.UnregisterTouchWindow(mWnd);
::EnumChildWindows(mWnd, nsWindow::UnregisterTouchForDescendants, 0);
return NS_OK;
}
BOOL CALLBACK nsWindow::RegisterTouchForDescendants(HWND aWnd, LPARAM aMsg) {
nsWindow* win = WinUtils::GetNSWindowPtr(aWnd);
if (win)
win->mGesture.RegisterTouchWindow(aWnd);
return TRUE;
}
BOOL CALLBACK nsWindow::UnregisterTouchForDescendants(HWND aWnd, LPARAM aMsg) {
nsWindow* win = WinUtils::GetNSWindowPtr(aWnd);
if (win)
win->mGesture.UnregisterTouchWindow(aWnd);
return TRUE;
}
/**************************************************************
*
* SECTION: nsIWidget::Move, nsIWidget::Resize,
* nsIWidget::Size, nsIWidget::BeginResizeDrag
*
* Repositioning and sizing a window.
*
**************************************************************/
void
nsWindow::SetSizeConstraints(const SizeConstraints& aConstraints)
{
SizeConstraints c = aConstraints;
if (mWindowType != eWindowType_popup) {
c.mMinSize.width = std::max(int32_t(::GetSystemMetrics(SM_CXMINTRACK)), c.mMinSize.width);
c.mMinSize.height = std::max(int32_t(::GetSystemMetrics(SM_CYMINTRACK)), c.mMinSize.height);
}
nsBaseWidget::SetSizeConstraints(c);
}
// Move this component
NS_METHOD nsWindow::Move(double aX, double aY)
{
if (mWindowType == eWindowType_toplevel ||
mWindowType == eWindowType_dialog) {
SetSizeMode(nsSizeMode_Normal);
}
// for top-level windows only, convert coordinates from global display pixels
// (the "parent" coordinate space) to the window's device pixel space
CSSToLayoutDeviceScale scale = BoundsUseDisplayPixels() ? GetDefaultScale()
: CSSToLayoutDeviceScale(1.0);
int32_t x = NSToIntRound(aX * scale.scale);
int32_t y = NSToIntRound(aY * scale.scale);
// Check to see if window needs to be moved first
// to avoid a costly call to SetWindowPos. This check
// can not be moved to the calling code in nsView, because
// some platforms do not position child windows correctly
// Only perform this check for non-popup windows, since the positioning can
// in fact change even when the x/y do not. We always need to perform the
// check. See bug #97805 for details.
if (mWindowType != eWindowType_popup && (mBounds.x == x) && (mBounds.y == y))
{
// Nothing to do, since it is already positioned correctly.
return NS_OK;
}
mBounds.x = x;
mBounds.y = y;
if (mWnd) {
#ifdef DEBUG
// complain if a window is moved offscreen (legal, but potentially worrisome)
if (mIsTopWidgetWindow) { // only a problem for top-level windows
// Make sure this window is actually on the screen before we move it
// XXX: Needs multiple monitor support
HDC dc = ::GetDC(mWnd);
if (dc) {
if (::GetDeviceCaps(dc, TECHNOLOGY) == DT_RASDISPLAY) {
RECT workArea;
::SystemParametersInfo(SPI_GETWORKAREA, 0, &workArea, 0);
// no annoying assertions. just mention the issue.
if (x < 0 || x >= workArea.right || y < 0 || y >= workArea.bottom) {
PR_LOG(gWindowsLog, PR_LOG_ALWAYS,
("window moved to offscreen position\n"));
}
}
::ReleaseDC(mWnd, dc);
}
}
#endif
ClearThemeRegion();
UINT flags = SWP_NOZORDER | SWP_NOACTIVATE | SWP_NOSIZE;
// Workaround SetWindowPos bug with D3D9. If our window has a clip
// region, some drivers or OSes may incorrectly copy into the clipped-out
// area.
if (mWindowType == eWindowType_plugin &&
(!mLayerManager || mLayerManager->GetBackendType() == LAYERS_D3D9) &&
mClipRects &&
(mClipRectCount != 1 || !mClipRects[0].IsEqualInterior(nsIntRect(0, 0, mBounds.width, mBounds.height)))) {
flags |= SWP_NOCOPYBITS;
}
VERIFY(::SetWindowPos(mWnd, nullptr, x, y, 0, 0, flags));
SetThemeRegion();
}
NotifyRollupGeometryChange();
return NS_OK;
}
// Resize this component
NS_METHOD nsWindow::Resize(double aWidth, double aHeight, bool aRepaint)
{
// for top-level windows only, convert coordinates from global display pixels
// (the "parent" coordinate space) to the window's device pixel space
CSSToLayoutDeviceScale scale = BoundsUseDisplayPixels() ? GetDefaultScale()
: CSSToLayoutDeviceScale(1.0);
int32_t width = NSToIntRound(aWidth * scale.scale);
int32_t height = NSToIntRound(aHeight * scale.scale);
NS_ASSERTION((width >= 0) , "Negative width passed to nsWindow::Resize");
NS_ASSERTION((height >= 0), "Negative height passed to nsWindow::Resize");
ConstrainSize(&width, &height);
// Avoid unnecessary resizing calls
if (mBounds.width == width && mBounds.height == height) {
if (aRepaint) {
Invalidate();
}
return NS_OK;
}
#ifdef MOZ_XUL
if (eTransparencyTransparent == mTransparencyMode)
ResizeTranslucentWindow(width, height);
#endif
// Set cached value for lightweight and printing
mBounds.width = width;
mBounds.height = height;
if (mWnd) {
UINT flags = SWP_NOZORDER | SWP_NOACTIVATE | SWP_NOMOVE;
if (!aRepaint) {
flags |= SWP_NOREDRAW;
}
ClearThemeRegion();
VERIFY(::SetWindowPos(mWnd, nullptr, 0, 0,
width, GetHeight(height), flags));
SetThemeRegion();
}
if (aRepaint)
Invalidate();
NotifyRollupGeometryChange();
return NS_OK;
}
// Resize this component
NS_METHOD nsWindow::Resize(double aX, double aY, double aWidth, double aHeight, bool aRepaint)
{
// for top-level windows only, convert coordinates from global display pixels
// (the "parent" coordinate space) to the window's device pixel space
CSSToLayoutDeviceScale scale = BoundsUseDisplayPixels() ? GetDefaultScale()
: CSSToLayoutDeviceScale(1.0);
int32_t x = NSToIntRound(aX * scale.scale);
int32_t y = NSToIntRound(aY * scale.scale);
int32_t width = NSToIntRound(aWidth * scale.scale);
int32_t height = NSToIntRound(aHeight * scale.scale);
NS_ASSERTION((width >= 0), "Negative width passed to nsWindow::Resize");
NS_ASSERTION((height >= 0), "Negative height passed to nsWindow::Resize");
ConstrainSize(&width, &height);
// Avoid unnecessary resizing calls
if (mBounds.x == x && mBounds.y == y &&
mBounds.width == width && mBounds.height == height) {
if (aRepaint) {
Invalidate();
}
return NS_OK;
}
#ifdef MOZ_XUL
if (eTransparencyTransparent == mTransparencyMode)
ResizeTranslucentWindow(width, height);
#endif
// Set cached value for lightweight and printing
mBounds.x = x;
mBounds.y = y;
mBounds.width = width;
mBounds.height = height;
if (mWnd) {
UINT flags = SWP_NOZORDER | SWP_NOACTIVATE;
if (!aRepaint) {
flags |= SWP_NOREDRAW;
}
ClearThemeRegion();
VERIFY(::SetWindowPos(mWnd, nullptr, x, y,
width, GetHeight(height), flags));
SetThemeRegion();
}
if (aRepaint)
Invalidate();
NotifyRollupGeometryChange();
return NS_OK;
}
NS_IMETHODIMP
nsWindow::BeginResizeDrag(WidgetGUIEvent* aEvent,
int32_t aHorizontal,
int32_t aVertical)
{
NS_ENSURE_ARG_POINTER(aEvent);
if (aEvent->eventStructType != NS_MOUSE_EVENT) {
// you can only begin a resize drag with a mouse event
return NS_ERROR_INVALID_ARG;
}
if (aEvent->AsMouseEvent()->button != WidgetMouseEvent::eLeftButton) {
// you can only begin a resize drag with the left mouse button
return NS_ERROR_INVALID_ARG;
}
// work out what sizemode we're talking about
WPARAM syscommand;
if (aVertical < 0) {
if (aHorizontal < 0) {
syscommand = SC_SIZE | WMSZ_TOPLEFT;
} else if (aHorizontal == 0) {
syscommand = SC_SIZE | WMSZ_TOP;
} else {
syscommand = SC_SIZE | WMSZ_TOPRIGHT;
}
} else if (aVertical == 0) {
if (aHorizontal < 0) {
syscommand = SC_SIZE | WMSZ_LEFT;
} else if (aHorizontal == 0) {
return NS_ERROR_INVALID_ARG;
} else {
syscommand = SC_SIZE | WMSZ_RIGHT;
}
} else {
if (aHorizontal < 0) {
syscommand = SC_SIZE | WMSZ_BOTTOMLEFT;
} else if (aHorizontal == 0) {
syscommand = SC_SIZE | WMSZ_BOTTOM;
} else {
syscommand = SC_SIZE | WMSZ_BOTTOMRIGHT;
}
}
// resizing doesn't work if the mouse is already captured
CaptureMouse(false);
// find the top-level window
HWND toplevelWnd = WinUtils::GetTopLevelHWND(mWnd, true);
// tell Windows to start the resize
::PostMessage(toplevelWnd, WM_SYSCOMMAND, syscommand,
POINTTOPOINTS(aEvent->refPoint));
return NS_OK;
}
/**************************************************************
*
* SECTION: Window Z-order and state.
*
* nsIWidget::PlaceBehind, nsIWidget::SetSizeMode,
* nsIWidget::ConstrainPosition
*
* Z-order, positioning, restore, minimize, and maximize.
*
**************************************************************/
// Position the window behind the given window
NS_METHOD nsWindow::PlaceBehind(nsTopLevelWidgetZPlacement aPlacement,
nsIWidget *aWidget, bool aActivate)
{
HWND behind = HWND_TOP;
if (aPlacement == eZPlacementBottom)
behind = HWND_BOTTOM;
else if (aPlacement == eZPlacementBelow && aWidget)
behind = (HWND)aWidget->GetNativeData(NS_NATIVE_WINDOW);
UINT flags = SWP_NOMOVE | SWP_NOREPOSITION | SWP_NOSIZE;
if (!aActivate)
flags |= SWP_NOACTIVATE;
if (!CanTakeFocus() && behind == HWND_TOP)
{
// Can't place the window to top so place it behind the foreground window
// (as long as it is not topmost)
HWND wndAfter = ::GetForegroundWindow();
if (!wndAfter)
behind = HWND_BOTTOM;
else if (!(GetWindowLongPtrW(wndAfter, GWL_EXSTYLE) & WS_EX_TOPMOST))
behind = wndAfter;
flags |= SWP_NOACTIVATE;
}
::SetWindowPos(mWnd, behind, 0, 0, 0, 0, flags);
return NS_OK;
}
// Maximize, minimize or restore the window.
NS_IMETHODIMP nsWindow::SetSizeMode(int32_t aMode) {
nsresult rv;
// Let's not try and do anything if we're already in that state.
// (This is needed to prevent problems when calling window.minimize(), which
// calls us directly, and then the OS triggers another call to us.)
if (aMode == mSizeMode)
return NS_OK;
// save the requested state
mLastSizeMode = mSizeMode;
rv = nsBaseWidget::SetSizeMode(aMode);
if (NS_SUCCEEDED(rv) && mIsVisible) {
int mode;
switch (aMode) {
case nsSizeMode_Fullscreen :
mode = SW_SHOW;
break;
case nsSizeMode_Maximized :
mode = SW_MAXIMIZE;
break;
case nsSizeMode_Minimized :
// Using SW_SHOWMINIMIZED prevents the working set from being trimmed but
// keeps the window active in the tray. So after the window is minimized,
// windows will fire WM_WINDOWPOSCHANGED (OnWindowPosChanged) at which point
// we will do some additional processing to get the active window set right.
// If sTrimOnMinimize is set, we let windows handle minimization normally
// using SW_MINIMIZE.
mode = sTrimOnMinimize ? SW_MINIMIZE : SW_SHOWMINIMIZED;
break;
default :
mode = SW_RESTORE;
}
WINDOWPLACEMENT pl;
pl.length = sizeof(pl);
::GetWindowPlacement(mWnd, &pl);
// Don't call ::ShowWindow if we're trying to "restore" a window that is
// already in a normal state. Prevents a bug where snapping to one side
// of the screen and then minimizing would cause Windows to forget our
// window's correct restored position/size.
if( !(pl.showCmd == SW_SHOWNORMAL && mode == SW_RESTORE) ) {
::ShowWindow(mWnd, mode);
}
// we activate here to ensure that the right child window is focused
if (mode == SW_MAXIMIZE || mode == SW_SHOW)
DispatchFocusToTopLevelWindow(true);
}
return rv;
}
// Constrain a potential move to fit onscreen
// Position (aX, aY) is specified in Windows screen (logical) pixels
NS_METHOD nsWindow::ConstrainPosition(bool aAllowSlop,
int32_t *aX, int32_t *aY)
{
if (!mIsTopWidgetWindow) // only a problem for top-level windows
return NS_OK;
double dpiScale = GetDefaultScale().scale;
// we need to use the window size in logical screen pixels
int32_t logWidth = std::max<int32_t>(NSToIntRound(mBounds.width / dpiScale), 1);
int32_t logHeight = std::max<int32_t>(NSToIntRound(mBounds.height / dpiScale), 1);
bool doConstrain = false; // whether we have enough info to do anything
/* get our playing field. use the current screen, or failing that
for any reason, use device caps for the default screen. */
RECT screenRect;
nsCOMPtr<nsIScreenManager> screenmgr = do_GetService(sScreenManagerContractID);
if (screenmgr) {
nsCOMPtr<nsIScreen> screen;
int32_t left, top, width, height;
screenmgr->ScreenForRect(*aX, *aY, logWidth, logHeight,
getter_AddRefs(screen));
if (screen) {
if (mSizeMode != nsSizeMode_Fullscreen) {
// For normalized windows, use the desktop work area.
screen->GetAvailRectDisplayPix(&left, &top, &width, &height);
} else {
// For full screen windows, use the desktop.
screen->GetRectDisplayPix(&left, &top, &width, &height);
}
screenRect.left = left;
screenRect.right = left + width;
screenRect.top = top;
screenRect.bottom = top + height;
doConstrain = true;
}
} else {
if (mWnd) {
HDC dc = ::GetDC(mWnd);
if (dc) {
if (::GetDeviceCaps(dc, TECHNOLOGY) == DT_RASDISPLAY) {
if (mSizeMode != nsSizeMode_Fullscreen) {
::SystemParametersInfo(SPI_GETWORKAREA, 0, &screenRect, 0);
} else {
screenRect.left = screenRect.top = 0;
screenRect.right = GetSystemMetrics(SM_CXFULLSCREEN);
screenRect.bottom = GetSystemMetrics(SM_CYFULLSCREEN);
}
doConstrain = true;
}
::ReleaseDC(mWnd, dc);
}
}
}
if (aAllowSlop) {
if (*aX < screenRect.left - logWidth + kWindowPositionSlop)
*aX = screenRect.left - logWidth + kWindowPositionSlop;
else if (*aX >= screenRect.right - kWindowPositionSlop)
*aX = screenRect.right - kWindowPositionSlop;
if (*aY < screenRect.top - logHeight + kWindowPositionSlop)
*aY = screenRect.top - logHeight + kWindowPositionSlop;
else if (*aY >= screenRect.bottom - kWindowPositionSlop)
*aY = screenRect.bottom - kWindowPositionSlop;
} else {
if (*aX < screenRect.left)
*aX = screenRect.left;
else if (*aX >= screenRect.right - logWidth)
*aX = screenRect.right - logWidth;
if (*aY < screenRect.top)
*aY = screenRect.top;
else if (*aY >= screenRect.bottom - logHeight)
*aY = screenRect.bottom - logHeight;
}
return NS_OK;
}
/**************************************************************
*
* SECTION: nsIWidget::Enable, nsIWidget::IsEnabled
*
* Enabling and disabling the widget.
*
**************************************************************/
// Enable/disable this component
NS_METHOD nsWindow::Enable(bool bState)
{
if (mWnd) {
::EnableWindow(mWnd, bState);
}
return NS_OK;
}
// Return the current enable state
bool nsWindow::IsEnabled() const
{
return !mWnd ||
(::IsWindowEnabled(mWnd) &&
::IsWindowEnabled(::GetAncestor(mWnd, GA_ROOT)));
}
/**************************************************************
*
* SECTION: nsIWidget::SetFocus
*
* Give the focus to this widget.
*
**************************************************************/
NS_METHOD nsWindow::SetFocus(bool aRaise)
{
if (mWnd) {
#ifdef WINSTATE_DEBUG_OUTPUT
if (mWnd == WinUtils::GetTopLevelHWND(mWnd)) {
PR_LOG(gWindowsLog, PR_LOG_ALWAYS,
("*** SetFocus: [ top] raise=%d\n", aRaise));
} else {
PR_LOG(gWindowsLog, PR_LOG_ALWAYS,
("*** SetFocus: [child] raise=%d\n", aRaise));
}
#endif
// Uniconify, if necessary
HWND toplevelWnd = WinUtils::GetTopLevelHWND(mWnd);
if (aRaise && ::IsIconic(toplevelWnd)) {
::ShowWindow(toplevelWnd, SW_RESTORE);
}
::SetFocus(mWnd);
}
return NS_OK;
}
/**************************************************************
*
* SECTION: Bounds
*
* GetBounds, GetClientBounds, GetScreenBounds, GetClientOffset
* SetDrawsInTitlebar, GetNonClientMargins, SetNonClientMargins
*
* Bound calculations.
*
**************************************************************/
// Return the window's full dimensions in screen coordinates.
// If the window has a parent, converts the origin to an offset
// of the parent's screen origin.
NS_METHOD nsWindow::GetBounds(nsIntRect &aRect)
{
if (mWnd) {
RECT r;
VERIFY(::GetWindowRect(mWnd, &r));
// assign size
aRect.width = r.right - r.left;
aRect.height = r.bottom - r.top;
// popup window bounds' are in screen coordinates, not relative to parent
// window
if (mWindowType == eWindowType_popup) {
aRect.x = r.left;
aRect.y = r.top;
return NS_OK;
}
// chrome on parent:
// ___ 5,5 (chrome start)
// | ____ 10,10 (client start)
// | | ____ 20,20 (child start)
// | | |
// 20,20 - 5,5 = 15,15 (??)
// minus GetClientOffset:
// 15,15 - 5,5 = 10,10
//
// no chrome on parent:
// ______ 10,10 (win start)
// | ____ 20,20 (child start)
// | |
// 20,20 - 10,10 = 10,10
//
// walking the chain:
// ___ 5,5 (chrome start)
// | ___ 10,10 (client start)
// | | ___ 20,20 (child start)
// | | | __ 30,30 (child start)
// | | | |
// 30,30 - 20,20 = 10,10 (offset from second child to first)
// 20,20 - 5,5 = 15,15 + 10,10 = 25,25 (??)
// minus GetClientOffset:
// 25,25 - 5,5 = 20,20 (offset from second child to parent client)
// convert coordinates if parent exists
HWND parent = ::GetParent(mWnd);
if (parent) {
RECT pr;
VERIFY(::GetWindowRect(parent, &pr));
r.left -= pr.left;
r.top -= pr.top;
// adjust for chrome
nsWindow* pWidget = static_cast<nsWindow*>(GetParent());
if (pWidget && pWidget->IsTopLevelWidget()) {
nsIntPoint clientOffset = pWidget->GetClientOffset();
r.left -= clientOffset.x;
r.top -= clientOffset.y;
}
}
aRect.x = r.left;
aRect.y = r.top;
} else {
aRect = mBounds;
}
return NS_OK;
}
// Get this component dimension
NS_METHOD nsWindow::GetClientBounds(nsIntRect &aRect)
{
if (mWnd) {
RECT r;
VERIFY(::GetClientRect(mWnd, &r));
nsIntRect bounds;
GetBounds(bounds);
aRect.MoveTo(bounds.TopLeft() + GetClientOffset());
aRect.width = r.right - r.left;
aRect.height = r.bottom - r.top;
} else {
aRect.SetRect(0,0,0,0);
}
return NS_OK;
}
// Like GetBounds, but don't offset by the parent
NS_METHOD nsWindow::GetScreenBounds(nsIntRect &aRect)
{
if (mWnd) {
RECT r;
VERIFY(::GetWindowRect(mWnd, &r));
aRect.width = r.right - r.left;
aRect.height = r.bottom - r.top;
aRect.x = r.left;
aRect.y = r.top;
} else
aRect = mBounds;
return NS_OK;
}
// return the x,y offset of the client area from the origin
// of the window. If the window is borderless returns (0,0).
nsIntPoint nsWindow::GetClientOffset()
{
if (!mWnd) {
return nsIntPoint(0, 0);
}
RECT r1;
GetWindowRect(mWnd, &r1);
nsIntPoint pt = WidgetToScreenOffset();
return nsIntPoint(pt.x - r1.left, pt.y - r1.top);
}
void
nsWindow::SetDrawsInTitlebar(bool aState)
{
nsWindow * window = GetTopLevelWindow(true);
if (window && window != this) {
return window->SetDrawsInTitlebar(aState);
}
if (aState) {
// top, right, bottom, left for nsIntMargin
nsIntMargin margins(0, -1, -1, -1);
SetNonClientMargins(margins);
}
else {
nsIntMargin margins(-1, -1, -1, -1);
SetNonClientMargins(margins);
}
}
NS_IMETHODIMP
nsWindow::GetNonClientMargins(nsIntMargin &margins)
{
nsWindow * window = GetTopLevelWindow(true);
if (window && window != this) {
return window->GetNonClientMargins(margins);
}
if (mCustomNonClient) {
margins = mNonClientMargins;
return NS_OK;
}
margins.top = GetSystemMetrics(SM_CYCAPTION);
margins.bottom = GetSystemMetrics(SM_CYFRAME);
margins.top += margins.bottom;
margins.left = margins.right = GetSystemMetrics(SM_CXFRAME);
return NS_OK;
}
void
nsWindow::ResetLayout()
{
// This will trigger a frame changed event, triggering
// nc calc size and a sizemode gecko event.
SetWindowPos(mWnd, 0, 0, 0, 0, 0,
SWP_FRAMECHANGED|SWP_NOACTIVATE|SWP_NOMOVE|
SWP_NOOWNERZORDER|SWP_NOSIZE|SWP_NOZORDER);
// If hidden, just send the frame changed event for now.
if (!mIsVisible)
return;
// Send a gecko size event to trigger reflow.
RECT clientRc = {0};
GetClientRect(mWnd, &clientRc);
nsIntRect evRect(WinUtils::ToIntRect(clientRc));
OnResize(evRect);
// Invalidate and update
Invalidate();
}
// Internally track the caption status via a window property. Required
// due to our internal handling of WM_NCACTIVATE when custom client
// margins are set.
static const PRUnichar kManageWindowInfoProperty[] = L"ManageWindowInfoProperty";
typedef BOOL (WINAPI *GetWindowInfoPtr)(HWND hwnd, PWINDOWINFO pwi);
static GetWindowInfoPtr sGetWindowInfoPtrStub = nullptr;
BOOL WINAPI
GetWindowInfoHook(HWND hWnd, PWINDOWINFO pwi)
{
if (!sGetWindowInfoPtrStub) {
NS_ASSERTION(FALSE, "Something is horribly wrong in GetWindowInfoHook!");
return FALSE;
}
int windowStatus =
reinterpret_cast<LONG_PTR>(GetPropW(hWnd, kManageWindowInfoProperty));
// No property set, return the default data.
if (!windowStatus)
return sGetWindowInfoPtrStub(hWnd, pwi);
// Call GetWindowInfo and update dwWindowStatus with our
// internally tracked value.
BOOL result = sGetWindowInfoPtrStub(hWnd, pwi);
if (result && pwi)
pwi->dwWindowStatus = (windowStatus == 1 ? 0 : WS_ACTIVECAPTION);
return result;
}
void
nsWindow::UpdateGetWindowInfoCaptionStatus(bool aActiveCaption)
{
if (!mWnd)
return;
if (!sGetWindowInfoPtrStub) {
sUser32Intercept.Init("user32.dll");
if (!sUser32Intercept.AddHook("GetWindowInfo", reinterpret_cast<intptr_t>(GetWindowInfoHook),
(void**) &sGetWindowInfoPtrStub))
return;
}
// Update our internally tracked caption status
SetPropW(mWnd, kManageWindowInfoProperty,
reinterpret_cast<HANDLE>(static_cast<int>(aActiveCaption) + 1));
}
/**
* Called when the window layout changes: full screen mode transitions,
* theme changes, and composition changes. Calculates the new non-client
* margins and fires off a frame changed event, which triggers an nc calc
* size windows event, kicking the changes in.
*
* The offsets calculated here are based on the value of `mNonClientMargins`
* which is specified in the "chromemargins" attribute of the window. For
* each margin, the value specified has the following meaning:
* -1 - leave the default frame in place
* 0 - remove the frame
* >0 - frame size equals min(0, (default frame size - margin value))
*
* This function calculates and populates `mNonClientOffset`.
* In our processing of `WM_NCCALCSIZE`, the frame size will be calculated
* as (default frame size - offset). For example, if the left frame should
* be 1 pixel narrower than the default frame size, `mNonClientOffset.left`
* will equal 1.
*
* For maximized, fullscreen, and minimized windows, the values stored in
* `mNonClientMargins` are ignored, and special processing takes place.
*
* For non-glass windows, we only allow frames to be their default size
* or removed entirely.
*/
bool
nsWindow::UpdateNonClientMargins(int32_t aSizeMode, bool aReflowWindow)
{
if (!mCustomNonClient)
return false;
if (aSizeMode == -1) {
aSizeMode = mSizeMode;
}
bool hasCaption = (mBorderStyle
& (eBorderStyle_all
| eBorderStyle_title
| eBorderStyle_menu
| eBorderStyle_default));
// mCaptionHeight is the default size of the NC area at
// the top of the window. If the window has a caption,
// the size is calculated as the sum of:
// SM_CYFRAME - The thickness of the sizing border
// around a resizable window
// SM_CXPADDEDBORDER - The amount of border padding
// for captioned windows
// SM_CYCAPTION - The height of the caption area
//
// If the window does not have a caption, mCaptionHeight will be equal to
// `GetSystemMetrics(SM_CYFRAME)`
mCaptionHeight = GetSystemMetrics(SM_CYFRAME)
+ (hasCaption ? GetSystemMetrics(SM_CYCAPTION)
+ GetSystemMetrics(SM_CXPADDEDBORDER)
: 0);
// mHorResizeMargin is the size of the default NC areas on the
// left and right sides of our window. It is calculated as
// the sum of:
// SM_CXFRAME - The thickness of the sizing border
// SM_CXPADDEDBORDER - The amount of border padding
// for captioned windows
//
// If the window does not have a caption, mHorResizeMargin will be equal to
// `GetSystemMetrics(SM_CXFRAME)`
mHorResizeMargin = GetSystemMetrics(SM_CXFRAME)
+ (hasCaption ? GetSystemMetrics(SM_CXPADDEDBORDER) : 0);
// mVertResizeMargin is the size of the default NC area at the
// bottom of the window. It is calculated as the sum of:
// SM_CYFRAME - The thickness of the sizing border
// SM_CXPADDEDBORDER - The amount of border padding
// for captioned windows.
//
// If the window does not have a caption, mVertResizeMargin will be equal to
// `GetSystemMetrics(SM_CYFRAME)`
mVertResizeMargin = GetSystemMetrics(SM_CYFRAME)
+ (hasCaption ? GetSystemMetrics(SM_CXPADDEDBORDER) : 0);
if (aSizeMode == nsSizeMode_Minimized) {
// Use default frame size for minimized windows
mNonClientOffset.top = 0;
mNonClientOffset.left = 0;
mNonClientOffset.right = 0;
mNonClientOffset.bottom = 0;
} else if (aSizeMode == nsSizeMode_Fullscreen) {
// Remove the default frame from the top of our fullscreen window. This
// makes the whole caption part of our client area, allowing us to draw
// in the whole caption area. Additionally remove the default frame from
// the left, right, and bottom.
mNonClientOffset.top = mCaptionHeight;
mNonClientOffset.bottom = mVertResizeMargin;
mNonClientOffset.left = mHorResizeMargin;
mNonClientOffset.right = mHorResizeMargin;
} else if (aSizeMode == nsSizeMode_Maximized) {
// Remove the default frame from the top of our maximized window. This
// makes the whole caption part of our client area, allowing us to draw
// in the whole caption area. Use default frame size on left, right, and
// bottom. The reason this works is that, for maximized windows,
// Windows positions them so that their frames fall off the screen.
// This gives the illusion of windows having no frames when they are
// maximized. If we try to mess with the frame sizes by setting these
// offsets to positive values, our client area will fall off the screen.
mNonClientOffset.top = mCaptionHeight;
mNonClientOffset.bottom = 0;
mNonClientOffset.left = 0;
mNonClientOffset.right = 0;
APPBARDATA appBarData;
appBarData.cbSize = sizeof(appBarData);
UINT taskbarState = SHAppBarMessage(ABM_GETSTATE, &appBarData);
if (ABS_AUTOHIDE & taskbarState) {
UINT edge = -1;
appBarData.hWnd = FindWindow(L"Shell_TrayWnd", nullptr);
if (appBarData.hWnd) {
HMONITOR taskbarMonitor = ::MonitorFromWindow(appBarData.hWnd,
MONITOR_DEFAULTTOPRIMARY);
HMONITOR windowMonitor = ::MonitorFromWindow(mWnd,
MONITOR_DEFAULTTONEAREST);
if (taskbarMonitor == windowMonitor) {
SHAppBarMessage(ABM_GETTASKBARPOS, &appBarData);
edge = appBarData.uEdge;
}
}
if (ABE_LEFT == edge) {
mNonClientOffset.left -= 1;
} else if (ABE_RIGHT == edge) {
mNonClientOffset.right -= 1;
} else if (ABE_BOTTOM == edge || ABE_TOP == edge) {
mNonClientOffset.bottom -= 1;
}
}
} else {
bool glass = nsUXThemeData::CheckForCompositor();
// We're dealing with a "normal" window (not maximized, minimized, or
// fullscreen), so process `mNonClientMargins` and set `mNonClientOffset`
// accordingly.
//
// Setting `mNonClientOffset` to 0 has the effect of leaving the default
// frame intact. Setting it to a value greater than 0 reduces the frame
// size by that amount.
if (mNonClientMargins.top > 0 && glass) {
mNonClientOffset.top = std::min(mCaptionHeight, mNonClientMargins.top);
} else if (mNonClientMargins.top == 0) {
mNonClientOffset.top = mCaptionHeight;
} else {
mNonClientOffset.top = 0;
}
if (mNonClientMargins.bottom > 0 && glass) {
mNonClientOffset.bottom = std::min(mVertResizeMargin, mNonClientMargins.bottom);
} else if (mNonClientMargins.bottom == 0) {
mNonClientOffset.bottom = mVertResizeMargin;
} else {
mNonClientOffset.bottom = 0;
}
if (mNonClientMargins.left > 0 && glass) {
mNonClientOffset.left = std::min(mHorResizeMargin, mNonClientMargins.left);
} else if (mNonClientMargins.left == 0) {
mNonClientOffset.left = mHorResizeMargin;
} else {
mNonClientOffset.left = 0;
}
if (mNonClientMargins.right > 0 && glass) {
mNonClientOffset.right = std::min(mHorResizeMargin, mNonClientMargins.right);
} else if (mNonClientMargins.right == 0) {
mNonClientOffset.right = mHorResizeMargin;
} else {
mNonClientOffset.right = 0;
}
}
if (aReflowWindow) {
// Force a reflow of content based on the new client
// dimensions.
ResetLayout();
}
return true;
}
NS_IMETHODIMP
nsWindow::SetNonClientMargins(nsIntMargin &margins)
{
if (!mIsTopWidgetWindow ||
mBorderStyle & eBorderStyle_none ||
mHideChrome)
return NS_ERROR_INVALID_ARG;
// Request for a reset
if (margins.top == -1 && margins.left == -1 &&
margins.right == -1 && margins.bottom == -1) {
mCustomNonClient = false;
mNonClientMargins = margins;
RemovePropW(mWnd, kManageWindowInfoProperty);
// Force a reflow of content based on the new client
// dimensions.
ResetLayout();
return NS_OK;
}
if (margins.top < -1 || margins.bottom < -1 ||
margins.left < -1 || margins.right < -1)
return NS_ERROR_INVALID_ARG;
mNonClientMargins = margins;
mCustomNonClient = true;
if (!UpdateNonClientMargins()) {
NS_WARNING("UpdateNonClientMargins failed!");
return NS_OK;
}
return NS_OK;
}
void
nsWindow::InvalidateNonClientRegion()
{
// +-+-----------------------+-+
// | | app non-client chrome | |
// | +-----------------------+ |
// | | app client chrome | | }
// | +-----------------------+ | }
// | | app content | | } area we don't want to invalidate
// | +-----------------------+ | }
// | | app client chrome | | }
// | +-----------------------+ |
// +---------------------------+ <
// ^ ^ windows non-client chrome
// client area = app *
RECT rect;
GetWindowRect(mWnd, &rect);
MapWindowPoints(nullptr, mWnd, (LPPOINT)&rect, 2);
HRGN winRgn = CreateRectRgnIndirect(&rect);
// Subtract app client chrome and app content leaving
// windows non-client chrome and app non-client chrome
// in winRgn.
GetWindowRect(mWnd, &rect);
rect.top += mCaptionHeight;
rect.right -= mHorResizeMargin;
rect.bottom -= mHorResizeMargin;
rect.left += mVertResizeMargin;
MapWindowPoints(nullptr, mWnd, (LPPOINT)&rect, 2);
HRGN clientRgn = CreateRectRgnIndirect(&rect);
CombineRgn(winRgn, winRgn, clientRgn, RGN_DIFF);
DeleteObject(clientRgn);
// triggers ncpaint and paint events for the two areas
RedrawWindow(mWnd, nullptr, winRgn, RDW_FRAME | RDW_INVALIDATE);
DeleteObject(winRgn);
}
HRGN
nsWindow::ExcludeNonClientFromPaintRegion(HRGN aRegion)
{
RECT rect;
HRGN rgn = nullptr;
if (aRegion == (HRGN)1) { // undocumented value indicating a full refresh
GetWindowRect(mWnd, &rect);
rgn = CreateRectRgnIndirect(&rect);
} else {
rgn = aRegion;
}
GetClientRect(mWnd, &rect);
MapWindowPoints(mWnd, nullptr, (LPPOINT)&rect, 2);
HRGN nonClientRgn = CreateRectRgnIndirect(&rect);
CombineRgn(rgn, rgn, nonClientRgn, RGN_DIFF);
DeleteObject(nonClientRgn);
return rgn;
}
/**************************************************************
*
* SECTION: nsIWidget::SetBackgroundColor
*
* Sets the window background paint color.
*
**************************************************************/
NS_METHOD nsWindow::SetBackgroundColor(const nscolor &aColor)
{
nsBaseWidget::SetBackgroundColor(aColor);
if (mBrush)
::DeleteObject(mBrush);
mBrush = ::CreateSolidBrush(NSRGB_2_COLOREF(mBackground));
if (mWnd != nullptr) {
::SetClassLongPtrW(mWnd, GCLP_HBRBACKGROUND, (LONG_PTR)mBrush);
}
return NS_OK;
}
/**************************************************************
*
* SECTION: nsIWidget::SetCursor
*
* SetCursor and related utilities for manging cursor state.
*
**************************************************************/
// Set this component cursor
NS_METHOD nsWindow::SetCursor(nsCursor aCursor)
{
// Only change cursor if it's changing
//XXX mCursor isn't always right. Scrollbars and others change it, too.
//XXX If we want this optimization we need a better way to do it.
//if (aCursor != mCursor) {
HCURSOR newCursor = nullptr;
switch (aCursor) {
case eCursor_select:
newCursor = ::LoadCursor(nullptr, IDC_IBEAM);
break;
case eCursor_wait:
newCursor = ::LoadCursor(nullptr, IDC_WAIT);
break;
case eCursor_hyperlink:
{
newCursor = ::LoadCursor(nullptr, IDC_HAND);
break;
}
case eCursor_standard:
case eCursor_context_menu: // XXX See bug 258960.
newCursor = ::LoadCursor(nullptr, IDC_ARROW);
break;
case eCursor_n_resize:
case eCursor_s_resize:
newCursor = ::LoadCursor(nullptr, IDC_SIZENS);
break;
case eCursor_w_resize:
case eCursor_e_resize:
newCursor = ::LoadCursor(nullptr, IDC_SIZEWE);
break;
case eCursor_nw_resize:
case eCursor_se_resize:
newCursor = ::LoadCursor(nullptr, IDC_SIZENWSE);
break;
case eCursor_ne_resize:
case eCursor_sw_resize:
newCursor = ::LoadCursor(nullptr, IDC_SIZENESW);
break;
case eCursor_crosshair:
newCursor = ::LoadCursor(nullptr, IDC_CROSS);
break;
case eCursor_move:
newCursor = ::LoadCursor(nullptr, IDC_SIZEALL);
break;
case eCursor_help:
newCursor = ::LoadCursor(nullptr, IDC_HELP);
break;
case eCursor_copy: // CSS3
newCursor = ::LoadCursor(nsToolkit::mDllInstance, MAKEINTRESOURCE(IDC_COPY));
break;
case eCursor_alias:
newCursor = ::LoadCursor(nsToolkit::mDllInstance, MAKEINTRESOURCE(IDC_ALIAS));
break;
case eCursor_cell:
newCursor = ::LoadCursor(nsToolkit::mDllInstance, MAKEINTRESOURCE(IDC_CELL));
break;
case eCursor_grab:
newCursor = ::LoadCursor(nsToolkit::mDllInstance, MAKEINTRESOURCE(IDC_GRAB));
break;
case eCursor_grabbing:
newCursor = ::LoadCursor(nsToolkit::mDllInstance, MAKEINTRESOURCE(IDC_GRABBING));
break;
case eCursor_spinning:
newCursor = ::LoadCursor(nullptr, IDC_APPSTARTING);
break;
case eCursor_zoom_in:
newCursor = ::LoadCursor(nsToolkit::mDllInstance, MAKEINTRESOURCE(IDC_ZOOMIN));
break;
case eCursor_zoom_out:
newCursor = ::LoadCursor(nsToolkit::mDllInstance, MAKEINTRESOURCE(IDC_ZOOMOUT));
break;
case eCursor_not_allowed:
case eCursor_no_drop:
newCursor = ::LoadCursor(nullptr, IDC_NO);
break;
case eCursor_col_resize:
newCursor = ::LoadCursor(nsToolkit::mDllInstance, MAKEINTRESOURCE(IDC_COLRESIZE));
break;
case eCursor_row_resize:
newCursor = ::LoadCursor(nsToolkit::mDllInstance, MAKEINTRESOURCE(IDC_ROWRESIZE));
break;
case eCursor_vertical_text:
newCursor = ::LoadCursor(nsToolkit::mDllInstance, MAKEINTRESOURCE(IDC_VERTICALTEXT));
break;
case eCursor_all_scroll:
// XXX not 100% appropriate perhaps
newCursor = ::LoadCursor(nullptr, IDC_SIZEALL);
break;
case eCursor_nesw_resize:
newCursor = ::LoadCursor(nullptr, IDC_SIZENESW);
break;
case eCursor_nwse_resize:
newCursor = ::LoadCursor(nullptr, IDC_SIZENWSE);
break;
case eCursor_ns_resize:
newCursor = ::LoadCursor(nullptr, IDC_SIZENS);
break;
case eCursor_ew_resize:
newCursor = ::LoadCursor(nullptr, IDC_SIZEWE);
break;
case eCursor_none:
newCursor = ::LoadCursor(nsToolkit::mDllInstance, MAKEINTRESOURCE(IDC_NONE));
break;
default:
NS_ERROR("Invalid cursor type");
break;
}
if (nullptr != newCursor) {
mCursor = aCursor;
HCURSOR oldCursor = ::SetCursor(newCursor);
if (sHCursor == oldCursor) {
NS_IF_RELEASE(sCursorImgContainer);
if (sHCursor != nullptr)
::DestroyIcon(sHCursor);
sHCursor = nullptr;
}
}
return NS_OK;
}
// Setting the actual cursor
NS_IMETHODIMP nsWindow::SetCursor(imgIContainer* aCursor,
uint32_t aHotspotX, uint32_t aHotspotY)
{
if (sCursorImgContainer == aCursor && sHCursor) {
::SetCursor(sHCursor);
return NS_OK;
}
int32_t width;
int32_t height;
nsresult rv;
rv = aCursor->GetWidth(&width);
NS_ENSURE_SUCCESS(rv, rv);
rv = aCursor->GetHeight(&height);
NS_ENSURE_SUCCESS(rv, rv);
// Reject cursors greater than 128 pixels in either direction, to prevent
// spoofing.
// XXX ideally we should rescale. Also, we could modify the API to
// allow trusted content to set larger cursors.
if (width > 128 || height > 128)
return NS_ERROR_NOT_AVAILABLE;
HCURSOR cursor;
// No scaling
gfxIntSize size(0, 0);
rv = nsWindowGfx::CreateIcon(aCursor, true, aHotspotX, aHotspotY, size, &cursor);
NS_ENSURE_SUCCESS(rv, rv);
mCursor = nsCursor(-1);
::SetCursor(cursor);
NS_IF_RELEASE(sCursorImgContainer);
sCursorImgContainer = aCursor;
NS_ADDREF(sCursorImgContainer);
if (sHCursor != nullptr)
::DestroyIcon(sHCursor);
sHCursor = cursor;
return NS_OK;
}
/**************************************************************
*
* SECTION: nsIWidget::Get/SetTransparencyMode
*
* Manage the transparency mode of the top-level window
* containing this widget.
*
**************************************************************/
#ifdef MOZ_XUL
nsTransparencyMode nsWindow::GetTransparencyMode()
{
return GetTopLevelWindow(true)->GetWindowTranslucencyInner();
}
void nsWindow::SetTransparencyMode(nsTransparencyMode aMode)
{
GetTopLevelWindow(true)->SetWindowTranslucencyInner(aMode);
}
static const nsIntRegion
RegionFromArray(const nsTArray<nsIntRect>& aRects)
{
nsIntRegion region;
for (uint32_t i = 0; i < aRects.Length(); ++i) {
region.Or(region, aRects[i]);
}
return region;
}
void nsWindow::UpdateOpaqueRegion(const nsIntRegion &aOpaqueRegion)
{
if (!HasGlass() || GetParent())
return;
// If there is no opaque region or hidechrome=true, set margins
// to support a full sheet of glass. Comments in MSDN indicate
// all values must be set to -1 to get a full sheet of glass.
MARGINS margins = { -1, -1, -1, -1 };
if (!aOpaqueRegion.IsEmpty()) {
nsIntRect pluginBounds;
for (nsIWidget* child = GetFirstChild(); child; child = child->GetNextSibling()) {
nsWindowType type;
child->GetWindowType(type);
if (type == eWindowType_plugin) {
// Collect the bounds of all plugins for GetLargestRectangle.
nsIntRect childBounds;
child->GetBounds(childBounds);
pluginBounds.UnionRect(pluginBounds, childBounds);
}
}
nsIntRect clientBounds;
GetClientBounds(clientBounds);
// Find the largest rectangle and use that to calculate the inset. Our top
// priority is to include the bounds of all plugins.
nsIntRect largest = aOpaqueRegion.GetLargestRectangle(pluginBounds);
margins.cxLeftWidth = largest.x;
margins.cxRightWidth = clientBounds.width - largest.XMost();
margins.cyBottomHeight = clientBounds.height - largest.YMost();
if (mCustomNonClient) {
// The minimum glass height must be the caption buttons height,
// otherwise the buttons are drawn incorrectly.
largest.y = std::max<uint32_t>(largest.y,
nsUXThemeData::sCommandButtons[CMDBUTTONIDX_BUTTONBOX].cy);
}
margins.cyTopHeight = largest.y;
}
// Only update glass area if there are changes
if (memcmp(&mGlassMargins, &margins, sizeof mGlassMargins)) {
mGlassMargins = margins;
UpdateGlass();
}
}
void nsWindow::UpdateGlass()
{
MARGINS margins = mGlassMargins;
// DWMNCRP_USEWINDOWSTYLE - The non-client rendering area is
// rendered based on the window style.
// DWMNCRP_ENABLED - The non-client area rendering is
// enabled; the window style is ignored.
DWMNCRENDERINGPOLICY policy = DWMNCRP_USEWINDOWSTYLE;
switch (mTransparencyMode) {
case eTransparencyBorderlessGlass:
// Only adjust if there is some opaque rectangle
if (margins.cxLeftWidth >= 0) {
margins.cxLeftWidth += kGlassMarginAdjustment;
margins.cyTopHeight += kGlassMarginAdjustment;
margins.cxRightWidth += kGlassMarginAdjustment;
margins.cyBottomHeight += kGlassMarginAdjustment;
}
// Fall through
case eTransparencyGlass:
policy = DWMNCRP_ENABLED;
break;
}
PR_LOG(gWindowsLog, PR_LOG_ALWAYS,
("glass margins: left:%d top:%d right:%d bottom:%d\n",
margins.cxLeftWidth, margins.cyTopHeight,
margins.cxRightWidth, margins.cyBottomHeight));
// Extends the window frame behind the client area
if (nsUXThemeData::CheckForCompositor()) {
WinUtils::dwmExtendFrameIntoClientAreaPtr(mWnd, &margins);
WinUtils::dwmSetWindowAttributePtr(mWnd, DWMWA_NCRENDERING_POLICY, &policy, sizeof policy);
}
}
#endif
/**************************************************************
*
* SECTION: nsIWidget::HideWindowChrome
*
* Show or hide window chrome.
*
**************************************************************/
NS_IMETHODIMP nsWindow::HideWindowChrome(bool aShouldHide)
{
HWND hwnd = WinUtils::GetTopLevelHWND(mWnd, true);
if (!WinUtils::GetNSWindowPtr(hwnd))
{
NS_WARNING("Trying to hide window decorations in an embedded context");
return NS_ERROR_FAILURE;
}
if (mHideChrome == aShouldHide)
return NS_OK;
DWORD_PTR style, exStyle;
mHideChrome = aShouldHide;
if (aShouldHide) {
DWORD_PTR tempStyle = ::GetWindowLongPtrW(hwnd, GWL_STYLE);
DWORD_PTR tempExStyle = ::GetWindowLongPtrW(hwnd, GWL_EXSTYLE);
style = tempStyle & ~(WS_CAPTION | WS_THICKFRAME);
exStyle = tempExStyle & ~(WS_EX_DLGMODALFRAME | WS_EX_WINDOWEDGE |
WS_EX_CLIENTEDGE | WS_EX_STATICEDGE);
mOldStyle = tempStyle;
mOldExStyle = tempExStyle;
}
else {
if (!mOldStyle || !mOldExStyle) {
mOldStyle = ::GetWindowLongPtrW(hwnd, GWL_STYLE);
mOldExStyle = ::GetWindowLongPtrW(hwnd, GWL_EXSTYLE);
}
style = mOldStyle;
exStyle = mOldExStyle;
}
VERIFY_WINDOW_STYLE(style);
::SetWindowLongPtrW(hwnd, GWL_STYLE, style);
::SetWindowLongPtrW(hwnd, GWL_EXSTYLE, exStyle);
return NS_OK;
}
/**************************************************************
*
* SECTION: nsWindow::Invalidate
*
* Invalidate an area of the client for painting.
*
**************************************************************/
// Invalidate this component visible area
NS_METHOD nsWindow::Invalidate(bool aEraseBackground,
bool aUpdateNCArea,
bool aIncludeChildren)
{
if (!mWnd) {
return NS_OK;
}
#ifdef WIDGET_DEBUG_OUTPUT
debug_DumpInvalidate(stdout,
this,
nullptr,
nsAutoCString("noname"),
(int32_t) mWnd);
#endif // WIDGET_DEBUG_OUTPUT
DWORD flags = RDW_INVALIDATE;
if (aEraseBackground) {
flags |= RDW_ERASE;
}
if (aUpdateNCArea) {
flags |= RDW_FRAME;
}
if (aIncludeChildren) {
flags |= RDW_ALLCHILDREN;
}
VERIFY(::RedrawWindow(mWnd, nullptr, nullptr, flags));
return NS_OK;
}
// Invalidate this component visible area
NS_METHOD nsWindow::Invalidate(const nsIntRect & aRect)
{
if (mWnd)
{
#ifdef WIDGET_DEBUG_OUTPUT
debug_DumpInvalidate(stdout,
this,
&aRect,
nsAutoCString("noname"),
(int32_t) mWnd);
#endif // WIDGET_DEBUG_OUTPUT
RECT rect;
rect.left = aRect.x;
rect.top = aRect.y;
rect.right = aRect.x + aRect.width;
rect.bottom = aRect.y + aRect.height;
VERIFY(::InvalidateRect(mWnd, &rect, FALSE));
}
return NS_OK;
}
NS_IMETHODIMP
nsWindow::MakeFullScreen(bool aFullScreen)
{
// taskbarInfo will be nullptr pre Windows 7 until Bug 680227 is resolved.
nsCOMPtr<nsIWinTaskbar> taskbarInfo =
do_GetService(NS_TASKBAR_CONTRACTID);
mFullscreenMode = aFullScreen;
if (aFullScreen) {
if (mSizeMode == nsSizeMode_Fullscreen)
return NS_OK;
mOldSizeMode = mSizeMode;
SetSizeMode(nsSizeMode_Fullscreen);
// Notify the taskbar that we will be entering full screen mode.
if (taskbarInfo) {
taskbarInfo->PrepareFullScreenHWND(mWnd, TRUE);
}
} else {
SetSizeMode(mOldSizeMode);
}
UpdateNonClientMargins();
bool visible = mIsVisible;
if (mOldSizeMode == nsSizeMode_Normal)
Show(false);
// Will call hide chrome, reposition window. Note this will
// also cache dimensions for restoration, so it should only
// be called once per fullscreen request.
nsresult rv = nsBaseWidget::MakeFullScreen(aFullScreen);
if (visible) {
Show(true);
Invalidate();
}
// Notify the taskbar that we have exited full screen mode.
if (!aFullScreen && taskbarInfo) {
taskbarInfo->PrepareFullScreenHWND(mWnd, FALSE);
}
if (mWidgetListener)
mWidgetListener->SizeModeChanged(mSizeMode);
return rv;
}
/**************************************************************
*
* SECTION: Native data storage
*
* nsIWidget::GetNativeData
* nsIWidget::FreeNativeData
*
* Set or clear native data based on a constant.
*
**************************************************************/
// Return some native data according to aDataType
void* nsWindow::GetNativeData(uint32_t aDataType)
{
nsAutoString className;
switch (aDataType) {
case NS_NATIVE_TMP_WINDOW:
GetWindowClass(className);
return (void*)::CreateWindowExW(mIsRTL ? WS_EX_LAYOUTRTL : 0,
className.get(),
L"",
WS_CHILD,
CW_USEDEFAULT,
CW_USEDEFAULT,
CW_USEDEFAULT,
CW_USEDEFAULT,
mWnd,
nullptr,
nsToolkit::mDllInstance,
nullptr);
case NS_NATIVE_PLUGIN_PORT:
case NS_NATIVE_WIDGET:
case NS_NATIVE_WINDOW:
case NS_NATIVE_SHAREABLE_WINDOW:
return (void*)mWnd;
case NS_NATIVE_GRAPHIC:
// XXX: This is sleezy!! Remember to Release the DC after using it!
#ifdef MOZ_XUL
return (void*)(eTransparencyTransparent == mTransparencyMode) ?
mMemoryDC : ::GetDC(mWnd);
#else
return (void*)::GetDC(mWnd);
#endif
case NS_NATIVE_TSF_THREAD_MGR:
case NS_NATIVE_TSF_CATEGORY_MGR:
case NS_NATIVE_TSF_DISPLAY_ATTR_MGR:
return IMEHandler::GetNativeData(aDataType);
default:
break;
}
return nullptr;
}
// Free some native data according to aDataType
void nsWindow::FreeNativeData(void * data, uint32_t aDataType)
{
switch (aDataType)
{
case NS_NATIVE_GRAPHIC:
#ifdef MOZ_XUL
if (eTransparencyTransparent != mTransparencyMode)
::ReleaseDC(mWnd, (HDC)data);
#else
::ReleaseDC(mWnd, (HDC)data);
#endif
break;
case NS_NATIVE_WIDGET:
case NS_NATIVE_WINDOW:
case NS_NATIVE_PLUGIN_PORT:
break;
default:
break;
}
}
/**************************************************************
*
* SECTION: nsIWidget::SetTitle
*
* Set the main windows title text.
*
**************************************************************/
NS_METHOD nsWindow::SetTitle(const nsAString& aTitle)
{
const nsString& strTitle = PromiseFlatString(aTitle);
::SendMessageW(mWnd, WM_SETTEXT, (WPARAM)0, (LPARAM)(LPCWSTR)strTitle.get());
return NS_OK;
}
/**************************************************************
*
* SECTION: nsIWidget::SetIcon
*
* Set the main windows icon.
*
**************************************************************/
NS_METHOD nsWindow::SetIcon(const nsAString& aIconSpec)
{
// Assume the given string is a local identifier for an icon file.
nsCOMPtr<nsIFile> iconFile;
ResolveIconName(aIconSpec, NS_LITERAL_STRING(".ico"),
getter_AddRefs(iconFile));
if (!iconFile)
return NS_OK; // not an error if icon is not found
nsAutoString iconPath;
iconFile->GetPath(iconPath);
// XXX this should use MZLU (see bug 239279)
::SetLastError(0);
HICON bigIcon = (HICON)::LoadImageW(nullptr,
(LPCWSTR)iconPath.get(),
IMAGE_ICON,
::GetSystemMetrics(SM_CXICON),
::GetSystemMetrics(SM_CYICON),
LR_LOADFROMFILE );
HICON smallIcon = (HICON)::LoadImageW(nullptr,
(LPCWSTR)iconPath.get(),
IMAGE_ICON,
::GetSystemMetrics(SM_CXSMICON),
::GetSystemMetrics(SM_CYSMICON),
LR_LOADFROMFILE );
if (bigIcon) {
HICON icon = (HICON) ::SendMessageW(mWnd, WM_SETICON, (WPARAM)ICON_BIG, (LPARAM)bigIcon);
if (icon)
::DestroyIcon(icon);
mIconBig = bigIcon;
}
#ifdef DEBUG_SetIcon
else {
NS_LossyConvertUTF16toASCII cPath(iconPath);
PR_LOG(gWindowsLog, PR_LOG_ALWAYS,
("\nIcon load error; icon=%s, rc=0x%08X\n\n",
cPath.get(), ::GetLastError()));
}
#endif
if (smallIcon) {
HICON icon = (HICON) ::SendMessageW(mWnd, WM_SETICON, (WPARAM)ICON_SMALL, (LPARAM)smallIcon);
if (icon)
::DestroyIcon(icon);
mIconSmall = smallIcon;
}
#ifdef DEBUG_SetIcon
else {
NS_LossyConvertUTF16toASCII cPath(iconPath);
PR_LOG(gWindowsLog, PR_LOG_ALWAYS,
("\nSmall icon load error; icon=%s, rc=0x%08X\n\n",
cPath.get(), ::GetLastError()));
}
#endif
return NS_OK;
}
/**************************************************************
*
* SECTION: nsIWidget::WidgetToScreenOffset
*
* Return this widget's origin in screen coordinates.
*
**************************************************************/
nsIntPoint nsWindow::WidgetToScreenOffset()
{
POINT point;
point.x = 0;
point.y = 0;
::ClientToScreen(mWnd, &point);
return nsIntPoint(point.x, point.y);
}
nsIntSize nsWindow::ClientToWindowSize(const nsIntSize& aClientSize)
{
if (mWindowType == eWindowType_popup && !IsPopupWithTitleBar())
return aClientSize;
// just use (200, 200) as the position
RECT r;
r.left = 200;
r.top = 200;
r.right = 200 + aClientSize.width;
r.bottom = 200 + aClientSize.height;
::AdjustWindowRectEx(&r, WindowStyle(), false, WindowExStyle());
return nsIntSize(r.right - r.left, r.bottom - r.top);
}
/**************************************************************
*
* SECTION: nsIWidget::EnableDragDrop
*
* Enables/Disables drag and drop of files on this widget.
*
**************************************************************/
NS_METHOD nsWindow::EnableDragDrop(bool aEnable)
{
NS_ASSERTION(mWnd, "nsWindow::EnableDragDrop() called after Destroy()");
nsresult rv = NS_ERROR_FAILURE;
if (aEnable) {
if (nullptr == mNativeDragTarget) {
mNativeDragTarget = new nsNativeDragTarget(this);
if (nullptr != mNativeDragTarget) {
mNativeDragTarget->AddRef();
if (S_OK == ::CoLockObjectExternal((LPUNKNOWN)mNativeDragTarget,TRUE,FALSE)) {
if (S_OK == ::RegisterDragDrop(mWnd, (LPDROPTARGET)mNativeDragTarget)) {
rv = NS_OK;
}
}
}
}
} else {
if (nullptr != mWnd && nullptr != mNativeDragTarget) {
::RevokeDragDrop(mWnd);
if (S_OK == ::CoLockObjectExternal((LPUNKNOWN)mNativeDragTarget, FALSE, TRUE)) {
rv = NS_OK;
}
mNativeDragTarget->DragCancel();
NS_RELEASE(mNativeDragTarget);
}
}
return rv;
}
/**************************************************************
*
* SECTION: nsIWidget::CaptureMouse
*
* Enables/Disables system mouse capture.
*
**************************************************************/
NS_METHOD nsWindow::CaptureMouse(bool aCapture)
{
if (!nsToolkit::gMouseTrailer) {
NS_ERROR("nsWindow::CaptureMouse called after nsToolkit destroyed");
return NS_OK;
}
if (aCapture) {
nsToolkit::gMouseTrailer->SetCaptureWindow(mWnd);
::SetCapture(mWnd);
} else {
nsToolkit::gMouseTrailer->SetCaptureWindow(nullptr);
::ReleaseCapture();
}
sIsInMouseCapture = aCapture;
return NS_OK;
}
/**************************************************************
*
* SECTION: nsIWidget::CaptureRollupEvents
*
* Dealing with event rollup on destroy for popups. Enables &
* Disables system capture of any and all events that would
* cause a dropdown to be rolled up.
*
**************************************************************/
NS_IMETHODIMP nsWindow::CaptureRollupEvents(nsIRollupListener * aListener,
bool aDoCapture)
{
if (aDoCapture) {
gRollupListener = aListener;
if (!sMsgFilterHook && !sCallProcHook && !sCallMouseHook) {
RegisterSpecialDropdownHooks();
}
sProcessHook = true;
} else {
gRollupListener = nullptr;
sProcessHook = false;
UnregisterSpecialDropdownHooks();
}
return NS_OK;
}
/**************************************************************
*
* SECTION: nsIWidget::GetAttention
*
* Bring this window to the user's attention.
*
**************************************************************/
// Draw user's attention to this window until it comes to foreground.
NS_IMETHODIMP
nsWindow::GetAttention(int32_t aCycleCount)
{
// Got window?
if (!mWnd)
return NS_ERROR_NOT_INITIALIZED;
HWND flashWnd = WinUtils::GetTopLevelHWND(mWnd, false, false);
HWND fgWnd = ::GetForegroundWindow();
// Don't flash if the flash count is 0 or if the foreground window is our
// window handle or that of our owned-most window.
if (aCycleCount == 0 ||
flashWnd == fgWnd ||
flashWnd == WinUtils::GetTopLevelHWND(fgWnd, false, false)) {
return NS_OK;
}
DWORD defaultCycleCount = 0;
::SystemParametersInfo(SPI_GETFOREGROUNDFLASHCOUNT, 0, &defaultCycleCount, 0);
FLASHWINFO flashInfo = { sizeof(FLASHWINFO), flashWnd,
FLASHW_ALL, aCycleCount > 0 ? aCycleCount : defaultCycleCount, 0 };
::FlashWindowEx(&flashInfo);
return NS_OK;
}
void nsWindow::StopFlashing()
{
HWND flashWnd = mWnd;
while (HWND ownerWnd = ::GetWindow(flashWnd, GW_OWNER)) {
flashWnd = ownerWnd;
}
FLASHWINFO flashInfo = { sizeof(FLASHWINFO), flashWnd,
FLASHW_STOP, 0, 0 };
::FlashWindowEx(&flashInfo);
}
/**************************************************************
*
* SECTION: nsIWidget::HasPendingInputEvent
*
* Ask whether there user input events pending. All input events are
* included, including those not targeted at this nsIwidget instance.
*
**************************************************************/
bool
nsWindow::HasPendingInputEvent()
{
// If there is pending input or the user is currently
// moving the window then return true.
// Note: When the user is moving the window WIN32 spins
// a separate event loop and input events are not
// reported to the application.
if (HIWORD(GetQueueStatus(QS_INPUT)))
return true;
GUITHREADINFO guiInfo;
guiInfo.cbSize = sizeof(GUITHREADINFO);
if (!GetGUIThreadInfo(GetCurrentThreadId(), &guiInfo))
return false;
return GUI_INMOVESIZE == (guiInfo.flags & GUI_INMOVESIZE);
}
/**************************************************************
*
* SECTION: nsIWidget::GetLayerManager
*
* Get the layer manager associated with this widget.
*
**************************************************************/
struct LayerManagerPrefs {
LayerManagerPrefs()
: mAccelerateByDefault(true)
, mDisableAcceleration(false)
, mPreferOpenGL(false)
, mPreferD3D9(false)
{}
bool mAccelerateByDefault;
bool mDisableAcceleration;
bool mForceAcceleration;
bool mPreferOpenGL;
bool mPreferD3D9;
};
static void
GetLayerManagerPrefs(LayerManagerPrefs* aManagerPrefs)
{
Preferences::GetBool("layers.acceleration.disabled",
&aManagerPrefs->mDisableAcceleration);
Preferences::GetBool("layers.acceleration.force-enabled",
&aManagerPrefs->mForceAcceleration);
Preferences::GetBool("layers.prefer-opengl",
&aManagerPrefs->mPreferOpenGL);
Preferences::GetBool("layers.prefer-d3d9",
&aManagerPrefs->mPreferD3D9);
const char *acceleratedEnv = PR_GetEnv("MOZ_ACCELERATED");
aManagerPrefs->mAccelerateByDefault =
aManagerPrefs->mAccelerateByDefault ||
(acceleratedEnv && (*acceleratedEnv != '0'));
bool safeMode = false;
nsCOMPtr<nsIXULRuntime> xr = do_GetService("@mozilla.org/xre/runtime;1");
if (xr)
xr->GetInSafeMode(&safeMode);
aManagerPrefs->mDisableAcceleration =
aManagerPrefs->mDisableAcceleration || safeMode;
}
LayerManager*
nsWindow::GetLayerManager(PLayerTransactionChild* aShadowManager,
LayersBackend aBackendHint,
LayerManagerPersistence aPersistence,
bool* aAllowRetaining)
{
if (aAllowRetaining) {
*aAllowRetaining = true;
}
#ifdef MOZ_ENABLE_D3D10_LAYER
if (mLayerManager) {
if (mLayerManager->GetBackendType() == LAYERS_D3D10)
{
LayerManagerD3D10 *layerManagerD3D10 =
static_cast<LayerManagerD3D10*>(mLayerManager.get());
if (layerManagerD3D10->device() !=
gfxWindowsPlatform::GetPlatform()->GetD3D10Device())
{
MOZ_ASSERT(!mLayerManager->IsInTransaction());
mLayerManager->Destroy();
mLayerManager = nullptr;
}
}
}
#endif
RECT windowRect;
::GetClientRect(mWnd, &windowRect);
// Try OMTC first.
if (!mLayerManager && ShouldUseOffMainThreadCompositing()) {
// e10s uses the parameter to pass in the shadow manager from the TabChild
// so we don't expect to see it there since this doesn't support e10s.
NS_ASSERTION(aShadowManager == nullptr, "Async Compositor not supported with e10s");
CreateCompositor();
}
if (!mLayerManager ||
(!sAllowD3D9 && aPersistence == LAYER_MANAGER_PERSISTENT &&
mLayerManager->GetBackendType() == LAYERS_BASIC &&
!ShouldUseOffMainThreadCompositing())) {
// If D3D9 is not currently allowed but the permanent manager is required,
// -and- we're currently using basic layers, run through this check.
LayerManagerPrefs prefs;
GetLayerManagerPrefs(&prefs);
/* We don't currently support using an accelerated layer manager with
* transparent windows so don't even try. I'm also not sure if we even
* want to support this case. See bug #593471 */
if (eTransparencyTransparent == mTransparencyMode ||
prefs.mDisableAcceleration ||
windowRect.right - windowRect.left > MAX_ACCELERATED_DIMENSION ||
windowRect.bottom - windowRect.top > MAX_ACCELERATED_DIMENSION)
mUseLayersAcceleration = false;
else if (prefs.mAccelerateByDefault)
mUseLayersAcceleration = true;
if (mUseLayersAcceleration) {
if (aPersistence == LAYER_MANAGER_PERSISTENT && !sAllowD3D9) {
MOZ_ASSERT(!mLayerManager || !mLayerManager->IsInTransaction());
// This will clear out our existing layer manager if we have one since
// if we hit this with a LayerManager we're always using BasicLayers.
nsToolkit::StartAllowingD3D9();
}
#ifdef MOZ_ENABLE_D3D10_LAYER
if (!prefs.mPreferD3D9 && !prefs.mPreferOpenGL) {
nsRefPtr<LayerManagerD3D10> layerManager =
new LayerManagerD3D10(this);
if (layerManager->Initialize(prefs.mForceAcceleration)) {
mLayerManager = layerManager;
}
}
#endif
#ifdef MOZ_ENABLE_D3D9_LAYER
if (!prefs.mPreferOpenGL && !mLayerManager && sAllowD3D9) {
nsRefPtr<LayerManagerD3D9> layerManager =
new LayerManagerD3D9(this);
if (layerManager->Initialize(prefs.mForceAcceleration)) {
mLayerManager = layerManager;
}
}
#endif
if (!mLayerManager && prefs.mPreferOpenGL) {
nsCOMPtr<nsIGfxInfo> gfxInfo = do_GetService("@mozilla.org/gfx/info;1");
int32_t status = nsIGfxInfo::FEATURE_NO_INFO;
if (gfxInfo && !prefs.mForceAcceleration) {
gfxInfo->GetFeatureStatus(nsIGfxInfo::FEATURE_OPENGL_LAYERS, &status);
}
if (status == nsIGfxInfo::FEATURE_NO_INFO) {
nsRefPtr<LayerManagerOGL> layerManager =
new LayerManagerOGL(this);
if (layerManager->Initialize()) {
mLayerManager = layerManager;
}
} else {
NS_WARNING("OpenGL accelerated layers are not supported on this system.");
}
}
}
// Fall back to software if we couldn't use any hardware backends.
if (!mLayerManager) {
// Try to use an async compositor first, if possible
if (ShouldUseOffMainThreadCompositing()) {
// e10s uses the parameter to pass in the shadow manager from the TabChild
// so we don't expect to see it there since this doesn't support e10s.
NS_ASSERTION(aShadowManager == nullptr, "Async Compositor not supported with e10s");
CreateCompositor();
}
if (!mLayerManager)
mLayerManager = CreateBasicLayerManager();
}
}
NS_ASSERTION(mLayerManager, "Couldn't provide a valid layer manager.");
return mLayerManager;
}
/**************************************************************
*
* SECTION: nsIWidget::GetThebesSurface
*
* Get the Thebes surface associated with this widget.
*
**************************************************************/
gfxASurface *nsWindow::GetThebesSurface()
{
#ifdef CAIRO_HAS_D2D_SURFACE
if (mD2DWindowSurface) {
return mD2DWindowSurface;
}
#endif
if (mPaintDC)
return (new gfxWindowsSurface(mPaintDC));
#ifdef CAIRO_HAS_D2D_SURFACE
if (gfxWindowsPlatform::GetPlatform()->GetRenderMode() ==
gfxWindowsPlatform::RENDER_DIRECT2D) {
gfxContentType content = GFX_CONTENT_COLOR;
#if defined(MOZ_XUL)
if (mTransparencyMode != eTransparencyOpaque) {
content = GFX_CONTENT_COLOR_ALPHA;
}
#endif
return (new gfxD2DSurface(mWnd, content));
} else {
#endif
uint32_t flags = gfxWindowsSurface::FLAG_TAKE_DC;
if (mTransparencyMode != eTransparencyOpaque) {
flags |= gfxWindowsSurface::FLAG_IS_TRANSPARENT;
}
return (new gfxWindowsSurface(mWnd, flags));
#ifdef CAIRO_HAS_D2D_SURFACE
}
#endif
}
/**************************************************************
*
* SECTION: nsIWidget::OnDefaultButtonLoaded
*
* Called after the dialog is loaded and it has a default button.
*
**************************************************************/
NS_IMETHODIMP
nsWindow::OnDefaultButtonLoaded(const nsIntRect &aButtonRect)
{
if (aButtonRect.IsEmpty())
return NS_OK;
// Don't snap when we are not active.
HWND activeWnd = ::GetActiveWindow();
if (activeWnd != ::GetForegroundWindow() ||
WinUtils::GetTopLevelHWND(mWnd, true) !=
WinUtils::GetTopLevelHWND(activeWnd, true)) {
return NS_OK;
}
bool isAlwaysSnapCursor =
Preferences::GetBool("ui.cursor_snapping.always_enabled", false);
if (!isAlwaysSnapCursor) {
BOOL snapDefaultButton;
if (!::SystemParametersInfo(SPI_GETSNAPTODEFBUTTON, 0,
&snapDefaultButton, 0) || !snapDefaultButton)
return NS_OK;
}
nsIntRect widgetRect;
nsresult rv = GetScreenBounds(widgetRect);
NS_ENSURE_SUCCESS(rv, rv);
nsIntRect buttonRect(aButtonRect + widgetRect.TopLeft());
nsIntPoint centerOfButton(buttonRect.x + buttonRect.width / 2,
buttonRect.y + buttonRect.height / 2);
// The center of the button can be outside of the widget.
// E.g., it could be hidden by scrolling.
if (!widgetRect.Contains(centerOfButton)) {
return NS_OK;
}
if (!::SetCursorPos(centerOfButton.x, centerOfButton.y)) {
NS_ERROR("SetCursorPos failed");
return NS_ERROR_FAILURE;
}
return NS_OK;
}
NS_IMETHODIMP
nsWindow::OverrideSystemMouseScrollSpeed(double aOriginalDeltaX,
double aOriginalDeltaY,
double& aOverriddenDeltaX,
double& aOverriddenDeltaY)
{
// The default vertical and horizontal scrolling speed is 3, this is defined
// on the document of SystemParametersInfo in MSDN.
const uint32_t kSystemDefaultScrollingSpeed = 3;
double absOriginDeltaX = Abs(aOriginalDeltaX);
double absOriginDeltaY = Abs(aOriginalDeltaY);
// Compute the simple overridden speed.
double absComputedOverriddenDeltaX, absComputedOverriddenDeltaY;
nsresult rv =
nsBaseWidget::OverrideSystemMouseScrollSpeed(absOriginDeltaX,
absOriginDeltaY,
absComputedOverriddenDeltaX,
absComputedOverriddenDeltaY);
NS_ENSURE_SUCCESS(rv, rv);
aOverriddenDeltaX = aOriginalDeltaX;
aOverriddenDeltaY = aOriginalDeltaY;
if (absComputedOverriddenDeltaX == absOriginDeltaX &&
absComputedOverriddenDeltaY == absOriginDeltaY) {
// We don't override now.
return NS_OK;
}
// Otherwise, we should check whether the user customized the system settings
// or not. If the user did it, we should respect the will.
UINT systemSpeed;
if (!::SystemParametersInfo(SPI_GETWHEELSCROLLLINES, 0, &systemSpeed, 0)) {
return NS_ERROR_FAILURE;
}
// The default vertical scrolling speed is 3, this is defined on the document
// of SystemParametersInfo in MSDN.
if (systemSpeed != kSystemDefaultScrollingSpeed) {
return NS_OK;
}
// Only Vista and later, Windows has the system setting of horizontal
// scrolling by the mouse wheel.
if (WinUtils::GetWindowsVersion() >= WinUtils::VISTA_VERSION) {
if (!::SystemParametersInfo(SPI_GETWHEELSCROLLCHARS, 0, &systemSpeed, 0)) {
return NS_ERROR_FAILURE;
}
// The default horizontal scrolling speed is 3, this is defined on the
// document of SystemParametersInfo in MSDN.
if (systemSpeed != kSystemDefaultScrollingSpeed) {
return NS_OK;
}
}
// Limit the overridden delta value from the system settings. The mouse
// driver might accelerate the scrolling speed already. If so, we shouldn't
// override the scrolling speed for preventing the unexpected high speed
// scrolling.
double absDeltaLimitX, absDeltaLimitY;
rv =
nsBaseWidget::OverrideSystemMouseScrollSpeed(kSystemDefaultScrollingSpeed,
kSystemDefaultScrollingSpeed,
absDeltaLimitX,
absDeltaLimitY);
NS_ENSURE_SUCCESS(rv, rv);
// If the given delta is larger than our computed limitation value, the delta
// was accelerated by the mouse driver. So, we should do nothing here.
if (absDeltaLimitX <= absOriginDeltaX || absDeltaLimitY <= absOriginDeltaY) {
return NS_OK;
}
aOverriddenDeltaX = std::min(absComputedOverriddenDeltaX, absDeltaLimitX);
aOverriddenDeltaY = std::min(absComputedOverriddenDeltaY, absDeltaLimitY);
if (aOriginalDeltaX < 0) {
aOverriddenDeltaX *= -1;
}
if (aOriginalDeltaY < 0) {
aOverriddenDeltaY *= -1;
}
return NS_OK;
}
mozilla::TemporaryRef<mozilla::gfx::DrawTarget>
nsWindow::StartRemoteDrawing()
{
MOZ_ASSERT(!mCompositeDC);
HDC dc = GetDC(mWnd);
if (!dc) {
return nullptr;
}
uint32_t flags = (mTransparencyMode == eTransparencyOpaque) ? 0 :
gfxWindowsSurface::FLAG_IS_TRANSPARENT;
nsRefPtr<gfxASurface> surf = new gfxWindowsSurface(dc, flags);
mozilla::gfx::IntSize size(surf->GetSize().width, surf->GetSize().height);
if (size.width <= 0 || size.height <= 0) {
ReleaseDC(mWnd, dc);
return nullptr;
}
MOZ_ASSERT(!mCompositeDC);
mCompositeDC = dc;
return mozilla::gfx::Factory::CreateDrawTargetForCairoSurface(surf->CairoSurface(), size);
}
void
nsWindow::EndRemoteDrawing()
{
ReleaseDC(mWnd, mCompositeDC);
mCompositeDC = nullptr;
}
/**************************************************************
**************************************************************
**
** BLOCK: Moz Events
**
** Moz GUI event management.
**
**************************************************************
**************************************************************/
/**************************************************************
*
* SECTION: Mozilla event initialization
*
* Helpers for initializing moz events.
*
**************************************************************/
// Event intialization
void nsWindow::InitEvent(WidgetGUIEvent& event, nsIntPoint* aPoint)
{
if (nullptr == aPoint) { // use the point from the event
// get the message position in client coordinates
if (mWnd != nullptr) {
DWORD pos = ::GetMessagePos();
POINT cpos;
cpos.x = GET_X_LPARAM(pos);
cpos.y = GET_Y_LPARAM(pos);
::ScreenToClient(mWnd, &cpos);
event.refPoint.x = cpos.x;
event.refPoint.y = cpos.y;
} else {
event.refPoint.x = 0;
event.refPoint.y = 0;
}
}
else {
// use the point override if provided
event.refPoint.x = aPoint->x;
event.refPoint.y = aPoint->y;
}
event.time = ::GetMessageTime();
}
/**************************************************************
*
* SECTION: Moz event dispatch helpers
*
* Helpers for dispatching different types of moz events.
*
**************************************************************/
// Main event dispatch. Invokes callback and ProcessEvent method on
// Event Listener object. Part of nsIWidget.
NS_IMETHODIMP nsWindow::DispatchEvent(WidgetGUIEvent* event,
nsEventStatus& aStatus)
{
#ifdef WIDGET_DEBUG_OUTPUT
debug_DumpEvent(stdout,
event->widget,
event,
nsAutoCString("something"),
(int32_t) mWnd);
#endif // WIDGET_DEBUG_OUTPUT
aStatus = nsEventStatus_eIgnore;
// Top level windows can have a view attached which requires events be sent
// to the underlying base window and the view. Added when we combined the
// base chrome window with the main content child for nc client area (title
// bar) rendering.
if (mAttachedWidgetListener) {
aStatus = mAttachedWidgetListener->HandleEvent(event, mUseAttachedEvents);
}
else if (mWidgetListener) {
aStatus = mWidgetListener->HandleEvent(event, mUseAttachedEvents);
}
// the window can be destroyed during processing of seemingly innocuous events like, say,
// mousedowns due to the magic of scripting. mousedowns will return nsEventStatus_eIgnore,
// which causes problems with the deleted window. therefore:
if (mOnDestroyCalled)
aStatus = nsEventStatus_eConsumeNoDefault;
return NS_OK;
}
bool nsWindow::DispatchStandardEvent(uint32_t aMsg)
{
WidgetGUIEvent event(true, aMsg, this);
InitEvent(event);
bool result = DispatchWindowEvent(&event);
return result;
}
bool nsWindow::DispatchKeyboardEvent(WidgetGUIEvent* event)
{
nsEventStatus status;
DispatchEvent(event, status);
return ConvertStatus(status);
}
bool nsWindow::DispatchWindowEvent(WidgetGUIEvent* event)
{
nsEventStatus status;
DispatchEvent(event, status);
return ConvertStatus(status);
}
bool nsWindow::DispatchWindowEvent(WidgetGUIEvent* event,
nsEventStatus& aStatus)
{
DispatchEvent(event, aStatus);
return ConvertStatus(aStatus);
}
bool nsWindow::DispatchCommandEvent(uint32_t aEventCommand)
{
nsCOMPtr<nsIAtom> command;
switch (aEventCommand) {
case APPCOMMAND_BROWSER_BACKWARD:
command = nsGkAtoms::Back;
break;
case APPCOMMAND_BROWSER_FORWARD:
command = nsGkAtoms::Forward;
break;
case APPCOMMAND_BROWSER_REFRESH:
command = nsGkAtoms::Reload;
break;
case APPCOMMAND_BROWSER_STOP:
command = nsGkAtoms::Stop;
break;
case APPCOMMAND_BROWSER_SEARCH:
command = nsGkAtoms::Search;
break;
case APPCOMMAND_BROWSER_FAVORITES:
command = nsGkAtoms::Bookmarks;
break;
case APPCOMMAND_BROWSER_HOME:
command = nsGkAtoms::Home;
break;
case APPCOMMAND_CLOSE:
command = nsGkAtoms::Close;
break;
case APPCOMMAND_FIND:
command = nsGkAtoms::Find;
break;
case APPCOMMAND_HELP:
command = nsGkAtoms::Help;
break;
case APPCOMMAND_NEW:
command = nsGkAtoms::New;
break;
case APPCOMMAND_OPEN:
command = nsGkAtoms::Open;
break;
case APPCOMMAND_PRINT:
command = nsGkAtoms::Print;
break;
case APPCOMMAND_SAVE:
command = nsGkAtoms::Save;
break;
case APPCOMMAND_FORWARD_MAIL:
command = nsGkAtoms::ForwardMail;
break;
case APPCOMMAND_REPLY_TO_MAIL:
command = nsGkAtoms::ReplyToMail;
break;
case APPCOMMAND_SEND_MAIL:
command = nsGkAtoms::SendMail;
break;
default:
return false;
}
WidgetCommandEvent event(true, nsGkAtoms::onAppCommand, command, this);
InitEvent(event);
return DispatchWindowEvent(&event);
}
// Recursively dispatch synchronous paints for nsIWidget
// descendants with invalidated rectangles.
BOOL CALLBACK nsWindow::DispatchStarvedPaints(HWND aWnd, LPARAM aMsg)
{
LONG_PTR proc = ::GetWindowLongPtrW(aWnd, GWLP_WNDPROC);
if (proc == (LONG_PTR)&nsWindow::WindowProc) {
// its one of our windows so check to see if it has a
// invalidated rect. If it does. Dispatch a synchronous
// paint.
if (GetUpdateRect(aWnd, nullptr, FALSE))
VERIFY(::UpdateWindow(aWnd));
}
return TRUE;
}
// Check for pending paints and dispatch any pending paint
// messages for any nsIWidget which is a descendant of the
// top-level window that *this* window is embedded within.
//
// Note: We do not dispatch pending paint messages for non
// nsIWidget managed windows.
void nsWindow::DispatchPendingEvents()
{
if (mPainting) {
NS_WARNING("We were asked to dispatch pending events during painting, "
"denying since that's unsafe.");
return;
}
// We need to ensure that reflow events do not get starved.
// At the same time, we don't want to recurse through here
// as that would prevent us from dispatching starved paints.
static int recursionBlocker = 0;
if (recursionBlocker++ == 0) {
NS_ProcessPendingEvents(nullptr, PR_MillisecondsToInterval(100));
--recursionBlocker;
}
// Quickly check to see if there are any paint events pending,
// but only dispatch them if it has been long enough since the
// last paint completed.
if (::GetQueueStatus(QS_PAINT) &&
((TimeStamp::Now() - mLastPaintEndTime).ToMilliseconds() >= 50)) {
// Find the top level window.
HWND topWnd = WinUtils::GetTopLevelHWND(mWnd);
// Dispatch pending paints for topWnd and all its descendant windows.
// Note: EnumChildWindows enumerates all descendant windows not just
// the children (but not the window itself).
nsWindow::DispatchStarvedPaints(topWnd, 0);
::EnumChildWindows(topWnd, nsWindow::DispatchStarvedPaints, 0);
}
}
bool nsWindow::DispatchPluginEvent(UINT aMessage,
WPARAM aWParam,
LPARAM aLParam,
bool aDispatchPendingEvents)
{
bool ret = nsWindowBase::DispatchPluginEvent(
WinUtils::InitMSG(aMessage, aWParam, aLParam, mWnd));
if (aDispatchPendingEvents && !Destroyed()) {
DispatchPendingEvents();
}
return ret;
}
// Deal with all sort of mouse event
bool nsWindow::DispatchMouseEvent(uint32_t aEventType, WPARAM wParam,
LPARAM lParam, bool aIsContextMenuKey,
int16_t aButton, uint16_t aInputSource)
{
bool result = false;
UserActivity();
if (!mWidgetListener) {
return result;
}
switch (aEventType) {
case NS_MOUSE_BUTTON_DOWN:
CaptureMouse(true);
break;
// NS_MOUSE_MOVE and NS_MOUSE_EXIT are here because we need to make sure capture flag
// isn't left on after a drag where we wouldn't see a button up message (see bug 324131).
case NS_MOUSE_BUTTON_UP:
case NS_MOUSE_MOVE:
case NS_MOUSE_EXIT:
if (!(wParam & (MK_LBUTTON | MK_MBUTTON | MK_RBUTTON)) && sIsInMouseCapture)
CaptureMouse(false);
break;
default:
break;
} // switch
nsIntPoint eventPoint;
eventPoint.x = GET_X_LPARAM(lParam);
eventPoint.y = GET_Y_LPARAM(lParam);
WidgetMouseEvent event(true, aEventType, this, WidgetMouseEvent::eReal,
aIsContextMenuKey ? WidgetMouseEvent::eContextMenuKey :
WidgetMouseEvent::eNormal);
if (aEventType == NS_CONTEXTMENU && aIsContextMenuKey) {
nsIntPoint zero(0, 0);
InitEvent(event, &zero);
} else {
InitEvent(event, &eventPoint);
}
ModifierKeyState modifierKeyState;
modifierKeyState.InitInputEvent(event);
event.button = aButton;
event.inputSource = aInputSource;
nsIntPoint mpScreen = eventPoint + WidgetToScreenOffset();
// Suppress mouse moves caused by widget creation
if (aEventType == NS_MOUSE_MOVE)
{
if ((sLastMouseMovePoint.x == mpScreen.x) && (sLastMouseMovePoint.y == mpScreen.y))
return result;
sLastMouseMovePoint.x = mpScreen.x;
sLastMouseMovePoint.y = mpScreen.y;
}
bool insideMovementThreshold = (DeprecatedAbs(sLastMousePoint.x - eventPoint.x) < (short)::GetSystemMetrics(SM_CXDOUBLECLK)) &&
(DeprecatedAbs(sLastMousePoint.y - eventPoint.y) < (short)::GetSystemMetrics(SM_CYDOUBLECLK));
BYTE eventButton;
switch (aButton) {
case WidgetMouseEvent::eLeftButton:
eventButton = VK_LBUTTON;
break;
case WidgetMouseEvent::eMiddleButton:
eventButton = VK_MBUTTON;
break;
case WidgetMouseEvent::eRightButton:
eventButton = VK_RBUTTON;
break;
default:
eventButton = 0;
break;
}
// Doubleclicks are used to set the click count, then changed to mousedowns
// We're going to time double-clicks from mouse *up* to next mouse *down*
LONG curMsgTime = ::GetMessageTime();
if (aEventType == NS_MOUSE_DOUBLECLICK) {
event.message = NS_MOUSE_BUTTON_DOWN;
event.button = aButton;
sLastClickCount = 2;
}
else if (aEventType == NS_MOUSE_BUTTON_UP) {
// remember when this happened for the next mouse down
sLastMousePoint.x = eventPoint.x;
sLastMousePoint.y = eventPoint.y;
sLastMouseButton = eventButton;
}
else if (aEventType == NS_MOUSE_BUTTON_DOWN) {
// now look to see if we want to convert this to a double- or triple-click
if (((curMsgTime - sLastMouseDownTime) < (LONG)::GetDoubleClickTime()) && insideMovementThreshold &&
eventButton == sLastMouseButton) {
sLastClickCount ++;
} else {
// reset the click count, to count *this* click
sLastClickCount = 1;
}
// Set last Click time on MouseDown only
sLastMouseDownTime = curMsgTime;
}
else if (aEventType == NS_MOUSE_MOVE && !insideMovementThreshold) {
sLastClickCount = 0;
}
else if (aEventType == NS_MOUSE_EXIT) {
event.exit = IsTopLevelMouseExit(mWnd) ?
WidgetMouseEvent::eTopLevel : WidgetMouseEvent::eChild;
}
event.clickCount = sLastClickCount;
#ifdef NS_DEBUG_XX
PR_LOG(gWindowsLog, PR_LOG_ALWAYS,
("Msg Time: %d Click Count: %d\n", curMsgTime, event.clickCount));
#endif
NPEvent pluginEvent;
switch (aEventType)
{
case NS_MOUSE_BUTTON_DOWN:
switch (aButton) {
case WidgetMouseEvent::eLeftButton:
pluginEvent.event = WM_LBUTTONDOWN;
break;
case WidgetMouseEvent::eMiddleButton:
pluginEvent.event = WM_MBUTTONDOWN;
break;
case WidgetMouseEvent::eRightButton:
pluginEvent.event = WM_RBUTTONDOWN;
break;
default:
break;
}
break;
case NS_MOUSE_BUTTON_UP:
switch (aButton) {
case WidgetMouseEvent::eLeftButton:
pluginEvent.event = WM_LBUTTONUP;
break;
case WidgetMouseEvent::eMiddleButton:
pluginEvent.event = WM_MBUTTONUP;
break;
case WidgetMouseEvent::eRightButton:
pluginEvent.event = WM_RBUTTONUP;
break;
default:
break;
}
break;
case NS_MOUSE_DOUBLECLICK:
switch (aButton) {
case WidgetMouseEvent::eLeftButton:
pluginEvent.event = WM_LBUTTONDBLCLK;
break;
case WidgetMouseEvent::eMiddleButton:
pluginEvent.event = WM_MBUTTONDBLCLK;
break;
case WidgetMouseEvent::eRightButton:
pluginEvent.event = WM_RBUTTONDBLCLK;
break;
default:
break;
}
break;
case NS_MOUSE_MOVE:
pluginEvent.event = WM_MOUSEMOVE;
break;
case NS_MOUSE_EXIT:
pluginEvent.event = WM_MOUSELEAVE;
break;
default:
pluginEvent.event = WM_NULL;
break;
}
pluginEvent.wParam = wParam; // plugins NEED raw OS event flags!
pluginEvent.lParam = lParam;
event.pluginEvent = (void *)&pluginEvent;
// call the event callback
if (mWidgetListener) {
if (nsToolkit::gMouseTrailer)
nsToolkit::gMouseTrailer->Disable();
if (aEventType == NS_MOUSE_MOVE) {
if (nsToolkit::gMouseTrailer && !sIsInMouseCapture) {
nsToolkit::gMouseTrailer->SetMouseTrailerWindow(mWnd);
}
nsIntRect rect;
GetBounds(rect);
rect.x = 0;
rect.y = 0;
if (rect.Contains(LayoutDeviceIntPoint::ToUntyped(event.refPoint))) {
if (sCurrentWindow == nullptr || sCurrentWindow != this) {
if ((nullptr != sCurrentWindow) && (!sCurrentWindow->mInDtor)) {
LPARAM pos = sCurrentWindow->lParamToClient(lParamToScreen(lParam));
sCurrentWindow->DispatchMouseEvent(NS_MOUSE_EXIT, wParam, pos, false,
WidgetMouseEvent::eLeftButton,
aInputSource);
}
sCurrentWindow = this;
if (!mInDtor) {
LPARAM pos = sCurrentWindow->lParamToClient(lParamToScreen(lParam));
sCurrentWindow->DispatchMouseEvent(NS_MOUSE_ENTER, wParam, pos, false,
WidgetMouseEvent::eLeftButton,
aInputSource);
}
}
}
} else if (aEventType == NS_MOUSE_EXIT) {
if (sCurrentWindow == this) {
sCurrentWindow = nullptr;
}
}
result = DispatchWindowEvent(&event);
if (nsToolkit::gMouseTrailer)
nsToolkit::gMouseTrailer->Enable();
// Release the widget with NS_IF_RELEASE() just in case
// the context menu key code in nsEventListenerManager::HandleEvent()
// released it already.
return result;
}
return result;
}
void nsWindow::DispatchFocusToTopLevelWindow(bool aIsActivate)
{
if (aIsActivate)
sJustGotActivate = false;
sJustGotDeactivate = false;
// retrive the toplevel window or dialog
HWND curWnd = mWnd;
HWND toplevelWnd = nullptr;
while (curWnd) {
toplevelWnd = curWnd;
nsWindow *win = WinUtils::GetNSWindowPtr(curWnd);
if (win) {
nsWindowType wintype;
win->GetWindowType(wintype);
if (wintype == eWindowType_toplevel || wintype == eWindowType_dialog)
break;
}
curWnd = ::GetParent(curWnd); // Parent or owner (if has no parent)
}
if (toplevelWnd) {
nsWindow *win = WinUtils::GetNSWindowPtr(toplevelWnd);
if (win && win->mWidgetListener) {
if (aIsActivate) {
win->mWidgetListener->WindowActivated();
} else {
if (!win->BlurEventsSuppressed()) {
win->mWidgetListener->WindowDeactivated();
}
}
}
}
}
bool nsWindow::IsTopLevelMouseExit(HWND aWnd)
{
DWORD pos = ::GetMessagePos();
POINT mp;
mp.x = GET_X_LPARAM(pos);
mp.y = GET_Y_LPARAM(pos);
HWND mouseWnd = ::WindowFromPoint(mp);
// WinUtils::GetTopLevelHWND() will return a HWND for the window frame
// (which includes the non-client area). If the mouse has moved into
// the non-client area, we should treat it as a top-level exit.
HWND mouseTopLevel = WinUtils::GetTopLevelHWND(mouseWnd);
if (mouseWnd == mouseTopLevel)
return true;
return WinUtils::GetTopLevelHWND(aWnd) != mouseTopLevel;
}
bool nsWindow::BlurEventsSuppressed()
{
// are they suppressed in this window?
if (mBlurSuppressLevel > 0)
return true;
// are they suppressed by any container widget?
HWND parentWnd = ::GetParent(mWnd);
if (parentWnd) {
nsWindow *parent = WinUtils::GetNSWindowPtr(parentWnd);
if (parent)
return parent->BlurEventsSuppressed();
}
return false;
}
// In some circumstances (opening dependent windows) it makes more sense
// (and fixes a crash bug) to not blur the parent window. Called from
// nsFilePicker.
void nsWindow::SuppressBlurEvents(bool aSuppress)
{
if (aSuppress)
++mBlurSuppressLevel; // for this widget
else {
NS_ASSERTION(mBlurSuppressLevel > 0, "unbalanced blur event suppression");
if (mBlurSuppressLevel > 0)
--mBlurSuppressLevel;
}
}
bool nsWindow::ConvertStatus(nsEventStatus aStatus)
{
return aStatus == nsEventStatus_eConsumeNoDefault;
}
/**************************************************************
*
* SECTION: IPC
*
* IPC related helpers.
*
**************************************************************/
// static
bool
nsWindow::IsAsyncResponseEvent(UINT aMsg, LRESULT& aResult)
{
switch(aMsg) {
case WM_SETFOCUS:
case WM_KILLFOCUS:
case WM_ENABLE:
case WM_WINDOWPOSCHANGING:
case WM_WINDOWPOSCHANGED:
case WM_PARENTNOTIFY:
case WM_ACTIVATEAPP:
case WM_NCACTIVATE:
case WM_ACTIVATE:
case WM_CHILDACTIVATE:
case WM_IME_SETCONTEXT:
case WM_IME_NOTIFY:
case WM_SHOWWINDOW:
case WM_CANCELMODE:
case WM_MOUSEACTIVATE:
case WM_CONTEXTMENU:
aResult = 0;
return true;
case WM_SETTINGCHANGE:
case WM_SETCURSOR:
return false;
}
#ifdef DEBUG
char szBuf[200];
sprintf(szBuf,
"An unhandled ISMEX_SEND message was received during spin loop! (%X)", aMsg);
NS_WARNING(szBuf);
#endif
return false;
}
void
nsWindow::IPCWindowProcHandler(UINT& msg, WPARAM& wParam, LPARAM& lParam)
{
NS_ASSERTION(!mozilla::ipc::MessageChannel::IsPumpingMessages(),
"Failed to prevent a nonqueued message from running!");
// Modal UI being displayed in windowless plugins.
if (mozilla::ipc::MessageChannel::IsSpinLoopActive() &&
(InSendMessageEx(nullptr) & (ISMEX_REPLIED|ISMEX_SEND)) == ISMEX_SEND) {
LRESULT res;
if (IsAsyncResponseEvent(msg, res)) {
ReplyMessage(res);
}
return;
}
// Handle certain sync plugin events sent to the parent which
// trigger ipc calls that result in deadlocks.
DWORD dwResult = 0;
bool handled = false;
switch(msg) {
// Windowless flash sending WM_ACTIVATE events to the main window
// via calls to ShowWindow.
case WM_ACTIVATE:
if (lParam != 0 && LOWORD(wParam) == WA_ACTIVE &&
IsWindow((HWND)lParam)) {
// Check for Adobe Reader X sync activate message from their
// helper window and ignore. Fixes an annoying focus problem.
if ((InSendMessageEx(nullptr) & (ISMEX_REPLIED|ISMEX_SEND)) == ISMEX_SEND) {
PRUnichar szClass[10];
HWND focusWnd = (HWND)lParam;
if (IsWindowVisible(focusWnd) &&
GetClassNameW(focusWnd, szClass,
sizeof(szClass)/sizeof(PRUnichar)) &&
!wcscmp(szClass, L"Edit") &&
!WinUtils::IsOurProcessWindow(focusWnd)) {
break;
}
}
handled = true;
}
break;
// Plugins taking or losing focus triggering focus app messages.
case WM_SETFOCUS:
case WM_KILLFOCUS:
// Windowed plugins that pass sys key events to defwndproc generate
// WM_SYSCOMMAND events to the main window.
case WM_SYSCOMMAND:
// Windowed plugins that fire context menu selection events to parent
// windows.
case WM_CONTEXTMENU:
// IME events fired as a result of synchronous focus changes
case WM_IME_SETCONTEXT:
handled = true;
break;
}
if (handled &&
(InSendMessageEx(nullptr) & (ISMEX_REPLIED|ISMEX_SEND)) == ISMEX_SEND) {
ReplyMessage(dwResult);
}
}
/**************************************************************
**************************************************************
**
** BLOCK: Native events
**
** Main Windows message handlers and OnXXX handlers for
** Windows event handling.
**
**************************************************************
**************************************************************/
/**************************************************************
*
* SECTION: Wind proc.
*
* The main Windows event procedures and associated
* message processing methods.
*
**************************************************************/
static bool
DisplaySystemMenu(HWND hWnd, nsSizeMode sizeMode, bool isRtl, int32_t x, int32_t y)
{
HMENU hMenu = GetSystemMenu(hWnd, FALSE);
if (hMenu) {
MENUITEMINFO mii;
mii.cbSize = sizeof(MENUITEMINFO);
mii.fMask = MIIM_STATE;
mii.fType = 0;
// update the options
mii.fState = MF_ENABLED;
SetMenuItemInfo(hMenu, SC_RESTORE, FALSE, &mii);
SetMenuItemInfo(hMenu, SC_SIZE, FALSE, &mii);
SetMenuItemInfo(hMenu, SC_MOVE, FALSE, &mii);
SetMenuItemInfo(hMenu, SC_MAXIMIZE, FALSE, &mii);
SetMenuItemInfo(hMenu, SC_MINIMIZE, FALSE, &mii);
mii.fState = MF_GRAYED;
switch(sizeMode) {
case nsSizeMode_Fullscreen:
SetMenuItemInfo(hMenu, SC_RESTORE, FALSE, &mii);
// intentional fall through
case nsSizeMode_Maximized:
SetMenuItemInfo(hMenu, SC_SIZE, FALSE, &mii);
SetMenuItemInfo(hMenu, SC_MOVE, FALSE, &mii);
SetMenuItemInfo(hMenu, SC_MAXIMIZE, FALSE, &mii);
break;
case nsSizeMode_Minimized:
SetMenuItemInfo(hMenu, SC_MINIMIZE, FALSE, &mii);
break;
case nsSizeMode_Normal:
SetMenuItemInfo(hMenu, SC_RESTORE, FALSE, &mii);
break;
}
LPARAM cmd =
TrackPopupMenu(hMenu,
(TPM_LEFTBUTTON|TPM_RIGHTBUTTON|
TPM_RETURNCMD|TPM_TOPALIGN|
(isRtl ? TPM_RIGHTALIGN : TPM_LEFTALIGN)),
x, y, 0, hWnd, nullptr);
if (cmd) {
PostMessage(hWnd, WM_SYSCOMMAND, cmd, 0);
return true;
}
}
return false;
}
inline static mozilla::HangMonitor::ActivityType ActivityTypeForMessage(UINT msg)
{
if ((msg >= WM_KEYFIRST && msg <= WM_IME_KEYLAST) ||
(msg >= WM_MOUSEFIRST && msg <= WM_MOUSELAST) ||
(msg >= MOZ_WM_MOUSEWHEEL_FIRST && msg <= MOZ_WM_MOUSEWHEEL_LAST) ||
(msg >= NS_WM_IMEFIRST && msg <= NS_WM_IMELAST)) {
return mozilla::HangMonitor::kUIActivity;
}
// This may not actually be right, but we don't want to reset the timer if
// we're not actually processing a UI message.
return mozilla::HangMonitor::kActivityUIAVail;
}
// The WndProc procedure for all nsWindows in this toolkit. This merely catches
// exceptions and passes the real work to WindowProcInternal. See bug 587406
// and http://msdn.microsoft.com/en-us/library/ms633573%28VS.85%29.aspx
LRESULT CALLBACK nsWindow::WindowProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
HangMonitor::NotifyActivity(ActivityTypeForMessage(msg));
return mozilla::CallWindowProcCrashProtected(WindowProcInternal, hWnd, msg, wParam, lParam);
}
LRESULT CALLBACK nsWindow::WindowProcInternal(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
if (::GetWindowLongPtrW(hWnd, GWLP_ID) == eFakeTrackPointScrollableID) {
// This message was sent to the FAKETRACKPOINTSCROLLABLE.
if (msg == WM_HSCROLL) {
// Route WM_HSCROLL messages to the main window.
hWnd = ::GetParent(::GetParent(hWnd));
} else {
// Handle all other messages with its original window procedure.
WNDPROC prevWindowProc = (WNDPROC)::GetWindowLongPtr(hWnd, GWLP_USERDATA);
return ::CallWindowProcW(prevWindowProc, hWnd, msg, wParam, lParam);
}
}
if (msg == MOZ_WM_TRACE) {
// This is a tracer event for measuring event loop latency.
// See WidgetTraceEvent.cpp for more details.
mozilla::SignalTracerThread();
return 0;
}
// Get the window which caused the event and ask it to process the message
nsWindow *targetWindow = WinUtils::GetNSWindowPtr(hWnd);
NS_ASSERTION(targetWindow, "nsWindow* is null!");
if (!targetWindow)
return ::DefWindowProcW(hWnd, msg, wParam, lParam);
// Hold the window for the life of this method, in case it gets
// destroyed during processing, unless we're in the dtor already.
nsCOMPtr<nsISupports> kungFuDeathGrip;
if (!targetWindow->mInDtor)
kungFuDeathGrip = do_QueryInterface((nsBaseWidget*)targetWindow);
targetWindow->IPCWindowProcHandler(msg, wParam, lParam);
// Create this here so that we store the last rolled up popup until after
// the event has been processed.
nsAutoRollup autoRollup;
LRESULT popupHandlingResult;
if (DealWithPopups(hWnd, msg, wParam, lParam, &popupHandlingResult))
return popupHandlingResult;
// Call ProcessMessage
LRESULT retValue;
if (targetWindow->ProcessMessage(msg, wParam, lParam, &retValue)) {
return retValue;
}
LRESULT res = ::CallWindowProcW(targetWindow->GetPrevWindowProc(),
hWnd, msg, wParam, lParam);
return res;
}
// The main windows message processing method for plugins.
// The result means whether this method processed the native
// event for plugin. If false, the native event should be
// processed by the caller self.
bool
nsWindow::ProcessMessageForPlugin(const MSG &aMsg,
MSGResult& aResult)
{
aResult.mResult = 0;
aResult.mConsumed = true;
bool eventDispatched = false;
switch (aMsg.message) {
case WM_CHAR:
case WM_SYSCHAR:
aResult.mResult = ProcessCharMessage(aMsg, &eventDispatched);
break;
case WM_KEYUP:
case WM_SYSKEYUP:
aResult.mResult = ProcessKeyUpMessage(aMsg, &eventDispatched);
break;
case WM_KEYDOWN:
case WM_SYSKEYDOWN:
aResult.mResult = ProcessKeyDownMessage(aMsg, &eventDispatched);
break;
case WM_DEADCHAR:
case WM_SYSDEADCHAR:
case WM_CUT:
case WM_COPY:
case WM_PASTE:
case WM_CLEAR:
case WM_UNDO:
break;
default:
return false;
}
if (!eventDispatched) {
aResult.mConsumed = nsWindowBase::DispatchPluginEvent(aMsg);
}
if (!Destroyed()) {
DispatchPendingEvents();
}
return true;
}
static void ForceFontUpdate()
{
// update device context font cache
// Dirty but easiest way:
// Changing nsIPrefBranch entry which triggers callbacks
// and flows into calling mDeviceContext->FlushFontCache()
// to update the font cache in all the instance of Browsers
static const char kPrefName[] = "font.internaluseonly.changed";
bool fontInternalChange =
Preferences::GetBool(kPrefName, false);
Preferences::SetBool(kPrefName, !fontInternalChange);
}
static bool CleartypeSettingChanged()
{
static int currentQuality = -1;
BYTE quality = cairo_win32_get_system_text_quality();
if (currentQuality == quality)
return false;
if (currentQuality < 0) {
currentQuality = quality;
return false;
}
currentQuality = quality;
return true;
}
bool
nsWindow::ExternalHandlerProcessMessage(UINT aMessage,
WPARAM& aWParam,
LPARAM& aLParam,
MSGResult& aResult)
{
if (mWindowHook.Notify(mWnd, aMessage, aWParam, aLParam, aResult)) {
return true;
}
if (IMEHandler::ProcessMessage(this, aMessage, aWParam, aLParam, aResult)) {
return true;
}
if (MouseScrollHandler::ProcessMessage(this, aMessage, aWParam, aLParam,
aResult)) {
return true;
}
if (PluginHasFocus()) {
MSG nativeMsg = WinUtils::InitMSG(aMessage, aWParam, aLParam, mWnd);
if (ProcessMessageForPlugin(nativeMsg, aResult)) {
return true;
}
}
return false;
}
// The main windows message processing method.
bool
nsWindow::ProcessMessage(UINT msg, WPARAM& wParam, LPARAM& lParam,
LRESULT *aRetValue)
{
#if defined(EVENT_DEBUG_OUTPUT)
// First param shows all events, second param indicates whether
// to show mouse move events. See nsWindowDbg for details.
PrintEvent(msg, SHOW_REPEAT_EVENTS, SHOW_MOUSEMOVE_EVENTS);
#endif
MSGResult msgResult(aRetValue);
if (ExternalHandlerProcessMessage(msg, wParam, lParam, msgResult)) {
return (msgResult.mConsumed || !mWnd);
}
bool result = false; // call the default nsWindow proc
*aRetValue = 0;
// Glass hit testing w/custom transparent margins
LRESULT dwmHitResult;
if (mCustomNonClient &&
nsUXThemeData::CheckForCompositor() &&
WinUtils::dwmDwmDefWindowProcPtr(mWnd, msg, wParam, lParam, &dwmHitResult)) {
*aRetValue = dwmHitResult;
return true;
}
// (Large blocks of code should be broken out into OnEvent handlers.)
switch (msg) {
// WM_QUERYENDSESSION must be handled by all windows.
// Otherwise Windows thinks the window can just be killed at will.
case WM_QUERYENDSESSION:
if (sCanQuit == TRI_UNKNOWN)
{
// Ask if it's ok to quit, and store the answer until we
// get WM_ENDSESSION signaling the round is complete.
nsCOMPtr<nsIObserverService> obsServ =
mozilla::services::GetObserverService();
nsCOMPtr<nsISupportsPRBool> cancelQuit =
do_CreateInstance(NS_SUPPORTS_PRBOOL_CONTRACTID);
cancelQuit->SetData(false);
obsServ->NotifyObservers(cancelQuit, "quit-application-requested", nullptr);
bool abortQuit;
cancelQuit->GetData(&abortQuit);
sCanQuit = abortQuit ? TRI_FALSE : TRI_TRUE;
}
*aRetValue = sCanQuit ? TRUE : FALSE;
result = true;
break;
case WM_ENDSESSION:
case MOZ_WM_APP_QUIT:
if (msg == MOZ_WM_APP_QUIT || (wParam == TRUE && sCanQuit == TRI_TRUE))
{
// Let's fake a shutdown sequence without actually closing windows etc.
// to avoid Windows killing us in the middle. A proper shutdown would
// require having a chance to pump some messages. Unfortunately
// Windows won't let us do that. Bug 212316.
nsCOMPtr<nsIObserverService> obsServ =
mozilla::services::GetObserverService();
NS_NAMED_LITERAL_STRING(context, "shutdown-persist");
obsServ->NotifyObservers(nullptr, "quit-application-granted", nullptr);
obsServ->NotifyObservers(nullptr, "quit-application-forced", nullptr);
obsServ->NotifyObservers(nullptr, "quit-application", nullptr);
obsServ->NotifyObservers(nullptr, "profile-change-net-teardown", context.get());
obsServ->NotifyObservers(nullptr, "profile-change-teardown", context.get());
obsServ->NotifyObservers(nullptr, "profile-before-change", context.get());
obsServ->NotifyObservers(nullptr, "profile-before-change2", context.get());
// Then a controlled but very quick exit.
_exit(0);
}
sCanQuit = TRI_UNKNOWN;
result = true;
break;
case WM_SYSCOLORCHANGE:
OnSysColorChanged();
break;
case WM_THEMECHANGED:
{
// Update non-client margin offsets
UpdateNonClientMargins();
nsUXThemeData::InitTitlebarInfo();
nsUXThemeData::UpdateNativeThemeInfo();
NotifyThemeChanged();
// Invalidate the window so that the repaint will
// pick up the new theme.
Invalidate(true, true, true);
}
break;
case WM_FONTCHANGE:
{
// We only handle this message for the hidden window,
// as we only need to update the (global) font list once
// for any given change, not once per window!
if (mWindowType != eWindowType_invisible) {
break;
}
nsresult rv;
bool didChange = false;
// update the global font list
nsCOMPtr<nsIFontEnumerator> fontEnum = do_GetService("@mozilla.org/gfx/fontenumerator;1", &rv);
if (NS_SUCCEEDED(rv)) {
fontEnum->UpdateFontList(&didChange);
ForceFontUpdate();
} //if (NS_SUCCEEDED(rv))
}
break;
case WM_NCCALCSIZE:
{
if (mCustomNonClient) {
// If `wParam` is `FALSE`, `lParam` points to a `RECT` that contains
// the proposed window rectangle for our window. During our
// processing of the `WM_NCCALCSIZE` message, we are expected to
// modify the `RECT` that `lParam` points to, so that its value upon
// our return is the new client area. We must return 0 if `wParam`
// is `FALSE`.
//
// If `wParam` is `TRUE`, `lParam` points to a `NCCALCSIZE_PARAMS`
// struct. This struct contains an array of 3 `RECT`s, the first of
// which has the exact same meaning as the `RECT` that is pointed to
// by `lParam` when `wParam` is `FALSE`. The remaining `RECT`s, in
// conjunction with our return value, can
// be used to specify portions of the source and destination window
// rectangles that are valid and should be preserved. We opt not to
// implement an elaborate client-area preservation technique, and
// simply return 0, which means "preserve the entire old client area
// and align it with the upper-left corner of our new client area".
RECT *clientRect = wParam
? &(reinterpret_cast<NCCALCSIZE_PARAMS*>(lParam))->rgrc[0]
: (reinterpret_cast<RECT*>(lParam));
clientRect->top += (mCaptionHeight - mNonClientOffset.top);
clientRect->left += (mHorResizeMargin - mNonClientOffset.left);
clientRect->right -= (mHorResizeMargin - mNonClientOffset.right);
clientRect->bottom -= (mVertResizeMargin - mNonClientOffset.bottom);
result = true;
*aRetValue = 0;
}
break;
}
case WM_NCHITTEST:
{
/*
* If an nc client area margin has been moved, we are responsible
* for calculating where the resize margins are and returning the
* appropriate set of hit test constants. DwmDefWindowProc (above)
* will handle hit testing on it's command buttons if we are on a
* composited desktop.
*/
if (!mCustomNonClient)
break;
*aRetValue =
ClientMarginHitTestPoint(GET_X_LPARAM(lParam), GET_Y_LPARAM(lParam));
result = true;
break;
}
case WM_SETTEXT:
/*
* WM_SETTEXT paints the titlebar area. Avoid this if we have a
* custom titlebar we paint ourselves.
*/
if (!mCustomNonClient || mNonClientMargins.top == -1)
break;
{
// From msdn, the way around this is to disable the visible state
// temporarily. We need the text to be set but we don't want the
// redraw to occur.
DWORD style = GetWindowLong(mWnd, GWL_STYLE);
SetWindowLong(mWnd, GWL_STYLE, style & ~WS_VISIBLE);
*aRetValue = CallWindowProcW(GetPrevWindowProc(), mWnd,
msg, wParam, lParam);
SetWindowLong(mWnd, GWL_STYLE, style);
return true;
}
case WM_NCACTIVATE:
{
/*
* WM_NCACTIVATE paints nc areas. Avoid this and re-route painting
* through WM_NCPAINT via InvalidateNonClientRegion.
*/
if (!mCustomNonClient)
break;
// let the dwm handle nc painting on glass
if(nsUXThemeData::CheckForCompositor())
break;
if (wParam == TRUE) {
// going active
*aRetValue = FALSE; // ignored
result = true;
UpdateGetWindowInfoCaptionStatus(true);
// invalidate to trigger a paint
InvalidateNonClientRegion();
break;
} else {
// going inactive
*aRetValue = TRUE; // go ahead and deactive
result = true;
UpdateGetWindowInfoCaptionStatus(false);
// invalidate to trigger a paint
InvalidateNonClientRegion();
break;
}
}
case WM_NCPAINT:
{
/*
* Reset the non-client paint region so that it excludes the
* non-client areas we paint manually. Then call defwndproc
* to do the actual painting.
*/
if (!mCustomNonClient)
break;
// let the dwm handle nc painting on glass
if(nsUXThemeData::CheckForCompositor())
break;
HRGN paintRgn = ExcludeNonClientFromPaintRegion((HRGN)wParam);
LRESULT res = CallWindowProcW(GetPrevWindowProc(), mWnd,
msg, (WPARAM)paintRgn, lParam);
if (paintRgn != (HRGN)wParam)
DeleteObject(paintRgn);
*aRetValue = res;
result = true;
}
break;
case WM_POWERBROADCAST:
switch (wParam)
{
case PBT_APMSUSPEND:
PostSleepWakeNotification(true);
break;
case PBT_APMRESUMEAUTOMATIC:
case PBT_APMRESUMECRITICAL:
case PBT_APMRESUMESUSPEND:
PostSleepWakeNotification(false);
break;
}
break;
case WM_CLOSE: // close request
if (mWidgetListener)
mWidgetListener->RequestWindowClose(this);
result = true; // abort window closure
break;
case WM_DESTROY:
// clean up.
OnDestroy();
result = true;
break;
case WM_PAINT:
if (CleartypeSettingChanged()) {
ForceFontUpdate();
gfxFontCache *fc = gfxFontCache::GetCache();
if (fc) {
fc->Flush();
}
}
*aRetValue = (int) OnPaint(nullptr, 0);
result = true;
break;
case WM_PRINTCLIENT:
result = OnPaint((HDC) wParam, 0);
break;
case WM_HOTKEY:
result = OnHotKey(wParam, lParam);
break;
case WM_SYSCHAR:
case WM_CHAR:
{
MSG nativeMsg = WinUtils::InitMSG(msg, wParam, lParam, mWnd);
result = ProcessCharMessage(nativeMsg, nullptr);
DispatchPendingEvents();
}
break;
case WM_SYSKEYUP:
case WM_KEYUP:
{
MSG nativeMsg = WinUtils::InitMSG(msg, wParam, lParam, mWnd);
nativeMsg.time = ::GetMessageTime();
result = ProcessKeyUpMessage(nativeMsg, nullptr);
DispatchPendingEvents();
}
break;
case WM_SYSKEYDOWN:
case WM_KEYDOWN:
{
MSG nativeMsg = WinUtils::InitMSG(msg, wParam, lParam, mWnd);
result = ProcessKeyDownMessage(nativeMsg, nullptr);
DispatchPendingEvents();
}
break;
// say we've dealt with erase background if widget does
// not need auto-erasing
case WM_ERASEBKGND:
if (!AutoErase((HDC)wParam)) {
*aRetValue = 1;
result = true;
}
break;
case WM_MOUSEMOVE:
{
mMousePresent = true;
// Suppress dispatch of pending events
// when mouse moves are generated by widget
// creation instead of user input.
LPARAM lParamScreen = lParamToScreen(lParam);
POINT mp;
mp.x = GET_X_LPARAM(lParamScreen);
mp.y = GET_Y_LPARAM(lParamScreen);
bool userMovedMouse = false;
if ((sLastMouseMovePoint.x != mp.x) || (sLastMouseMovePoint.y != mp.y)) {
userMovedMouse = true;
}
result = DispatchMouseEvent(NS_MOUSE_MOVE, wParam, lParam,
false, WidgetMouseEvent::eLeftButton,
MOUSE_INPUT_SOURCE());
if (userMovedMouse) {
DispatchPendingEvents();
}
}
break;
case WM_NCMOUSEMOVE:
// If we receive a mouse move event on non-client chrome, make sure and
// send an NS_MOUSE_EXIT event as well.
if (mMousePresent && !sIsInMouseCapture)
SendMessage(mWnd, WM_MOUSELEAVE, 0, 0);
break;
case WM_LBUTTONDOWN:
{
result = DispatchMouseEvent(NS_MOUSE_BUTTON_DOWN, wParam, lParam,
false, WidgetMouseEvent::eLeftButton,
MOUSE_INPUT_SOURCE());
DispatchPendingEvents();
}
break;
case WM_LBUTTONUP:
{
result = DispatchMouseEvent(NS_MOUSE_BUTTON_UP, wParam, lParam,
false, WidgetMouseEvent::eLeftButton,
MOUSE_INPUT_SOURCE());
DispatchPendingEvents();
}
break;
case WM_MOUSELEAVE:
{
if (!mMousePresent)
break;
mMousePresent = false;
// We need to check mouse button states and put them in for
// wParam.
WPARAM mouseState = (GetKeyState(VK_LBUTTON) ? MK_LBUTTON : 0)
| (GetKeyState(VK_MBUTTON) ? MK_MBUTTON : 0)
| (GetKeyState(VK_RBUTTON) ? MK_RBUTTON : 0);
// Synthesize an event position because we don't get one from
// WM_MOUSELEAVE.
LPARAM pos = lParamToClient(::GetMessagePos());
DispatchMouseEvent(NS_MOUSE_EXIT, mouseState, pos, false,
WidgetMouseEvent::eLeftButton, MOUSE_INPUT_SOURCE());
}
break;
case WM_CONTEXTMENU:
{
// if the context menu is brought up from the keyboard, |lParam|
// will be -1.
LPARAM pos;
bool contextMenukey = false;
if (lParam == -1)
{
contextMenukey = true;
pos = lParamToClient(GetMessagePos());
}
else
{
pos = lParamToClient(lParam);
}
result = DispatchMouseEvent(NS_CONTEXTMENU, wParam, pos, contextMenukey,
contextMenukey ?
WidgetMouseEvent::eLeftButton :
WidgetMouseEvent::eRightButton,
MOUSE_INPUT_SOURCE());
if (lParam != -1 && !result && mCustomNonClient) {
WidgetMouseEvent event(true, NS_MOUSE_MOZHITTEST, this,
WidgetMouseEvent::eReal,
WidgetMouseEvent::eNormal);
event.refPoint = LayoutDeviceIntPoint(GET_X_LPARAM(pos), GET_Y_LPARAM(pos));
event.inputSource = MOUSE_INPUT_SOURCE();
event.mFlags.mOnlyChromeDispatch = true;
if (DispatchWindowEvent(&event)) {
// Blank area hit, throw up the system menu.
DisplaySystemMenu(mWnd, mSizeMode, mIsRTL, GET_X_LPARAM(lParam), GET_Y_LPARAM(lParam));
result = true;
}
}
}
break;
case WM_LBUTTONDBLCLK:
result = DispatchMouseEvent(NS_MOUSE_DOUBLECLICK, wParam,
lParam, false,
WidgetMouseEvent::eLeftButton,
MOUSE_INPUT_SOURCE());
DispatchPendingEvents();
break;
case WM_MBUTTONDOWN:
result = DispatchMouseEvent(NS_MOUSE_BUTTON_DOWN, wParam,
lParam, false,
WidgetMouseEvent::eMiddleButton,
MOUSE_INPUT_SOURCE());
DispatchPendingEvents();
break;
case WM_MBUTTONUP:
result = DispatchMouseEvent(NS_MOUSE_BUTTON_UP, wParam,
lParam, false,
WidgetMouseEvent::eMiddleButton,
MOUSE_INPUT_SOURCE());
DispatchPendingEvents();
break;
case WM_MBUTTONDBLCLK:
result = DispatchMouseEvent(NS_MOUSE_DOUBLECLICK, wParam,
lParam, false,
WidgetMouseEvent::eMiddleButton,
MOUSE_INPUT_SOURCE());
DispatchPendingEvents();
break;
case WM_NCMBUTTONDOWN:
result = DispatchMouseEvent(NS_MOUSE_BUTTON_DOWN, 0,
lParamToClient(lParam), false,
WidgetMouseEvent::eMiddleButton,
MOUSE_INPUT_SOURCE());
DispatchPendingEvents();
break;
case WM_NCMBUTTONUP:
result = DispatchMouseEvent(NS_MOUSE_BUTTON_UP, 0,
lParamToClient(lParam), false,
WidgetMouseEvent::eMiddleButton,
MOUSE_INPUT_SOURCE());
DispatchPendingEvents();
break;
case WM_NCMBUTTONDBLCLK:
result = DispatchMouseEvent(NS_MOUSE_DOUBLECLICK, 0,
lParamToClient(lParam), false,
WidgetMouseEvent::eMiddleButton,
MOUSE_INPUT_SOURCE());
DispatchPendingEvents();
break;
case WM_RBUTTONDOWN:
result = DispatchMouseEvent(NS_MOUSE_BUTTON_DOWN, wParam,
lParam, false,
WidgetMouseEvent::eRightButton,
MOUSE_INPUT_SOURCE());
DispatchPendingEvents();
break;
case WM_RBUTTONUP:
result = DispatchMouseEvent(NS_MOUSE_BUTTON_UP, wParam,
lParam, false,
WidgetMouseEvent::eRightButton,
MOUSE_INPUT_SOURCE());
DispatchPendingEvents();
break;
case WM_RBUTTONDBLCLK:
result = DispatchMouseEvent(NS_MOUSE_DOUBLECLICK, wParam,
lParam, false,
WidgetMouseEvent::eRightButton,
MOUSE_INPUT_SOURCE());
DispatchPendingEvents();
break;
case WM_NCRBUTTONDOWN:
result = DispatchMouseEvent(NS_MOUSE_BUTTON_DOWN, 0,
lParamToClient(lParam), false,
WidgetMouseEvent::eRightButton,
MOUSE_INPUT_SOURCE());
DispatchPendingEvents();
break;
case WM_NCRBUTTONUP:
result = DispatchMouseEvent(NS_MOUSE_BUTTON_UP, 0,
lParamToClient(lParam), false,
WidgetMouseEvent::eRightButton,
MOUSE_INPUT_SOURCE());
DispatchPendingEvents();
break;
case WM_NCRBUTTONDBLCLK:
result = DispatchMouseEvent(NS_MOUSE_DOUBLECLICK, 0,
lParamToClient(lParam), false,
WidgetMouseEvent::eRightButton,
MOUSE_INPUT_SOURCE());
DispatchPendingEvents();
break;
case WM_EXITSIZEMOVE:
if (!sIsInMouseCapture) {
NotifySizeMoveDone();
}
break;
case WM_NCLBUTTONDBLCLK:
DispatchMouseEvent(NS_MOUSE_DOUBLECLICK, 0, lParamToClient(lParam),
false, WidgetMouseEvent::eLeftButton,
MOUSE_INPUT_SOURCE());
result =
DispatchMouseEvent(NS_MOUSE_BUTTON_UP, 0, lParamToClient(lParam),
false, WidgetMouseEvent::eLeftButton,
MOUSE_INPUT_SOURCE());
DispatchPendingEvents();
break;
case WM_APPCOMMAND:
{
uint32_t appCommand = GET_APPCOMMAND_LPARAM(lParam);
uint32_t contentCommandMessage = NS_EVENT_NULL;
// XXX After we implement KeyboardEvent.key, we should dispatch the
// key event if (GET_DEVICE_LPARAM(lParam) == FAPPCOMMAND_KEY) is.
switch (appCommand)
{
case APPCOMMAND_BROWSER_BACKWARD:
case APPCOMMAND_BROWSER_FORWARD:
case APPCOMMAND_BROWSER_REFRESH:
case APPCOMMAND_BROWSER_STOP:
case APPCOMMAND_BROWSER_SEARCH:
case APPCOMMAND_BROWSER_FAVORITES:
case APPCOMMAND_BROWSER_HOME:
case APPCOMMAND_CLOSE:
case APPCOMMAND_FIND:
case APPCOMMAND_HELP:
case APPCOMMAND_NEW:
case APPCOMMAND_OPEN:
case APPCOMMAND_PRINT:
case APPCOMMAND_SAVE:
case APPCOMMAND_FORWARD_MAIL:
case APPCOMMAND_REPLY_TO_MAIL:
case APPCOMMAND_SEND_MAIL:
// We shouldn't consume the message always because if we don't handle
// the message, the sender (typically, utility of keyboard or mouse)
// may send other key messages which indicate well known shortcut key.
if (DispatchCommandEvent(appCommand)) {
// tell the driver that we handled the event
*aRetValue = 1;
result = true;
}
break;
// Use content command for following commands:
case APPCOMMAND_COPY:
contentCommandMessage = NS_CONTENT_COMMAND_COPY;
break;
case APPCOMMAND_CUT:
contentCommandMessage = NS_CONTENT_COMMAND_CUT;
break;
case APPCOMMAND_PASTE:
contentCommandMessage = NS_CONTENT_COMMAND_PASTE;
break;
case APPCOMMAND_REDO:
contentCommandMessage = NS_CONTENT_COMMAND_REDO;
break;
case APPCOMMAND_UNDO:
contentCommandMessage = NS_CONTENT_COMMAND_UNDO;
break;
}
if (contentCommandMessage) {
WidgetContentCommandEvent contentCommand(true, contentCommandMessage,
this);
DispatchWindowEvent(&contentCommand);
// tell the driver that we handled the event
*aRetValue = 1;
result = true;
}
// default = false - tell the driver that the event was not handled
}
break;
// The WM_ACTIVATE event is fired when a window is raised or lowered,
// and the loword of wParam specifies which. But we don't want to tell
// the focus system about this until the WM_SETFOCUS or WM_KILLFOCUS
// events are fired. Instead, set either the sJustGotActivate or
// gJustGotDeactivate flags and activate/deactivate once the focus
// events arrive.
case WM_ACTIVATE:
if (mWidgetListener) {
int32_t fActive = LOWORD(wParam);
if (WA_INACTIVE == fActive) {
// when minimizing a window, the deactivation and focus events will
// be fired in the reverse order. Instead, just deactivate right away.
if (HIWORD(wParam))
DispatchFocusToTopLevelWindow(false);
else
sJustGotDeactivate = true;
if (mIsTopWidgetWindow)
mLastKeyboardLayout = KeyboardLayout::GetInstance()->GetLayout();
} else {
StopFlashing();
sJustGotActivate = true;
WidgetMouseEvent event(true, NS_MOUSE_ACTIVATE, this,
WidgetMouseEvent::eReal);
InitEvent(event);
ModifierKeyState modifierKeyState;
modifierKeyState.InitInputEvent(event);
DispatchWindowEvent(&event);
if (sSwitchKeyboardLayout && mLastKeyboardLayout)
ActivateKeyboardLayout(mLastKeyboardLayout, 0);
}
}
break;
case WM_MOUSEACTIVATE:
if (mWindowType == eWindowType_popup) {
// a popup with a parent owner should not be activated when clicked
// but should still allow the mouse event to be fired, so the return
// value is set to MA_NOACTIVATE. But if the owner isn't the frontmost
// window, just use default processing so that the window is activated.
HWND owner = ::GetWindow(mWnd, GW_OWNER);
if (owner && owner == ::GetForegroundWindow()) {
*aRetValue = MA_NOACTIVATE;
result = true;
}
}
break;
case WM_WINDOWPOSCHANGING:
{
LPWINDOWPOS info = (LPWINDOWPOS)lParam;
OnWindowPosChanging(info);
result = true;
}
break;
case WM_GETMINMAXINFO:
{
MINMAXINFO* mmi = (MINMAXINFO*)lParam;
// Set the constraints. The minimum size should also be constrained to the
// default window maximum size so that it fits on screen.
mmi->ptMinTrackSize.x =
std::min((int32_t)mmi->ptMaxTrackSize.x,
std::max((int32_t)mmi->ptMinTrackSize.x, mSizeConstraints.mMinSize.width));
mmi->ptMinTrackSize.y =
std::min((int32_t)mmi->ptMaxTrackSize.y,
std::max((int32_t)mmi->ptMinTrackSize.y, mSizeConstraints.mMinSize.height));
mmi->ptMaxTrackSize.x = std::min((int32_t)mmi->ptMaxTrackSize.x, mSizeConstraints.mMaxSize.width);
mmi->ptMaxTrackSize.y = std::min((int32_t)mmi->ptMaxTrackSize.y, mSizeConstraints.mMaxSize.height);
}
break;
case WM_SETFOCUS:
// If previous focused window isn't ours, it must have received the
// redirected message. So, we should forget it.
if (!WinUtils::IsOurProcessWindow(HWND(wParam))) {
RedirectedKeyDownMessageManager::Forget();
}
if (sJustGotActivate) {
DispatchFocusToTopLevelWindow(true);
}
break;
case WM_KILLFOCUS:
if (sJustGotDeactivate) {
DispatchFocusToTopLevelWindow(false);
}
break;
case WM_WINDOWPOSCHANGED:
{
WINDOWPOS* wp = (LPWINDOWPOS)lParam;
OnWindowPosChanged(wp);
result = true;
}
break;
case WM_INPUTLANGCHANGEREQUEST:
*aRetValue = TRUE;
result = false;
break;
case WM_INPUTLANGCHANGE:
KeyboardLayout::GetInstance()->
OnLayoutChange(reinterpret_cast<HKL>(lParam));
result = false; // always pass to child window
break;
case WM_DESTROYCLIPBOARD:
{
nsIClipboard* clipboard;
nsresult rv = CallGetService(kCClipboardCID, &clipboard);
if(NS_SUCCEEDED(rv)) {
clipboard->EmptyClipboard(nsIClipboard::kGlobalClipboard);
NS_RELEASE(clipboard);
}
}
break;
#ifdef ACCESSIBILITY
case WM_GETOBJECT:
{
*aRetValue = 0;
// Do explicit casting to make it working on 64bit systems (see bug 649236
// for details).
DWORD objId = static_cast<DWORD>(lParam);
if (objId == OBJID_CLIENT) { // oleacc.dll will be loaded dynamically
a11y::Accessible* rootAccessible = GetAccessible(); // Held by a11y cache
if (rootAccessible) {
IAccessible *msaaAccessible = nullptr;
rootAccessible->GetNativeInterface((void**)&msaaAccessible); // does an addref
if (msaaAccessible) {
*aRetValue = LresultFromObject(IID_IAccessible, wParam, msaaAccessible); // does an addref
msaaAccessible->Release(); // release extra addref
result = true; // We handled the WM_GETOBJECT message
}
}
}
}
#endif
case WM_SYSCOMMAND:
{
WPARAM filteredWParam = (wParam &0xFFF0);
// prevent Windows from trimming the working set. bug 76831
if (!sTrimOnMinimize && filteredWParam == SC_MINIMIZE) {
::ShowWindow(mWnd, SW_SHOWMINIMIZED);
result = true;
}
// Handle the system menu manually when we're in full screen mode
// so we can set the appropriate options.
if (filteredWParam == SC_KEYMENU && lParam == VK_SPACE &&
mSizeMode == nsSizeMode_Fullscreen) {
DisplaySystemMenu(mWnd, mSizeMode, mIsRTL,
MOZ_SYSCONTEXT_X_POS,
MOZ_SYSCONTEXT_Y_POS);
result = true;
}
}
break;
case WM_DWMCOMPOSITIONCHANGED:
// First, update the compositor state to latest one. All other methods
// should use same state as here for consistency painting.
nsUXThemeData::CheckForCompositor(true);
UpdateNonClientMargins();
RemovePropW(mWnd, kManageWindowInfoProperty);
BroadcastMsg(mWnd, WM_DWMCOMPOSITIONCHANGED);
NotifyThemeChanged();
UpdateGlass();
Invalidate(true, true, true);
break;
case WM_UPDATEUISTATE:
{
// If the UI state has changed, fire an event so the UI updates the
// keyboard cues based on the system setting and how the window was
// opened. For example, a dialog opened via a keyboard press on a button
// should enable cues, whereas the same dialog opened via a mouse click of
// the button should not.
int32_t action = LOWORD(wParam);
if (action == UIS_SET || action == UIS_CLEAR) {
int32_t flags = HIWORD(wParam);
UIStateChangeType showAccelerators = UIStateChangeType_NoChange;
UIStateChangeType showFocusRings = UIStateChangeType_NoChange;
if (flags & UISF_HIDEACCEL)
showAccelerators = (action == UIS_SET) ? UIStateChangeType_Clear : UIStateChangeType_Set;
if (flags & UISF_HIDEFOCUS)
showFocusRings = (action == UIS_SET) ? UIStateChangeType_Clear : UIStateChangeType_Set;
NotifyUIStateChanged(showAccelerators, showFocusRings);
}
break;
}
/* Gesture support events */
case WM_TABLET_QUERYSYSTEMGESTURESTATUS:
// According to MS samples, this must be handled to enable
// rotational support in multi-touch drivers.
result = true;
*aRetValue = TABLET_ROTATE_GESTURE_ENABLE;
break;
case WM_TOUCH:
result = OnTouch(wParam, lParam);
if (result) {
*aRetValue = 0;
}
break;
case WM_GESTURE:
result = OnGesture(wParam, lParam);
break;
case WM_GESTURENOTIFY:
{
if (mWindowType != eWindowType_invisible &&
mWindowType != eWindowType_plugin) {
// A GestureNotify event is dispatched to decide which single-finger panning
// direction should be active (including none) and if pan feedback should
// be displayed. Java and plugin windows can make their own calls.
GESTURENOTIFYSTRUCT * gestureinfo = (GESTURENOTIFYSTRUCT*)lParam;
nsPointWin touchPoint;
touchPoint = gestureinfo->ptsLocation;
touchPoint.ScreenToClient(mWnd);
WidgetGestureNotifyEvent gestureNotifyEvent(true,
NS_GESTURENOTIFY_EVENT_START, this);
gestureNotifyEvent.refPoint = LayoutDeviceIntPoint::FromUntyped(touchPoint);
nsEventStatus status;
DispatchEvent(&gestureNotifyEvent, status);
mDisplayPanFeedback = gestureNotifyEvent.displayPanFeedback;
if (!mTouchWindow)
mGesture.SetWinGestureSupport(mWnd, gestureNotifyEvent.panDirection);
}
result = false; //should always bubble to DefWindowProc
}
break;
case WM_CLEAR:
{
WidgetContentCommandEvent command(true, NS_CONTENT_COMMAND_DELETE, this);
DispatchWindowEvent(&command);
result = true;
}
break;
case WM_CUT:
{
WidgetContentCommandEvent command(true, NS_CONTENT_COMMAND_CUT, this);
DispatchWindowEvent(&command);
result = true;
}
break;
case WM_COPY:
{
WidgetContentCommandEvent command(true, NS_CONTENT_COMMAND_COPY, this);
DispatchWindowEvent(&command);
result = true;
}
break;
case WM_PASTE:
{
WidgetContentCommandEvent command(true, NS_CONTENT_COMMAND_PASTE, this);
DispatchWindowEvent(&command);
result = true;
}
break;
case EM_UNDO:
{
WidgetContentCommandEvent command(true, NS_CONTENT_COMMAND_UNDO, this);
DispatchWindowEvent(&command);
*aRetValue = (LRESULT)(command.mSucceeded && command.mIsEnabled);
result = true;
}
break;
case EM_REDO:
{
WidgetContentCommandEvent command(true, NS_CONTENT_COMMAND_REDO, this);
DispatchWindowEvent(&command);
*aRetValue = (LRESULT)(command.mSucceeded && command.mIsEnabled);
result = true;
}
break;
case EM_CANPASTE:
{
// Support EM_CANPASTE message only when wParam isn't specified or
// is plain text format.
if (wParam == 0 || wParam == CF_TEXT || wParam == CF_UNICODETEXT) {
WidgetContentCommandEvent command(true, NS_CONTENT_COMMAND_PASTE,
this, true);
DispatchWindowEvent(&command);
*aRetValue = (LRESULT)(command.mSucceeded && command.mIsEnabled);
result = true;
}
}
break;
case EM_CANUNDO:
{
WidgetContentCommandEvent command(true, NS_CONTENT_COMMAND_UNDO,
this, true);
DispatchWindowEvent(&command);
*aRetValue = (LRESULT)(command.mSucceeded && command.mIsEnabled);
result = true;
}
break;
case EM_CANREDO:
{
WidgetContentCommandEvent command(true, NS_CONTENT_COMMAND_REDO,
this, true);
DispatchWindowEvent(&command);
*aRetValue = (LRESULT)(command.mSucceeded && command.mIsEnabled);
result = true;
}
break;
default:
{
if (msg == nsAppShell::GetTaskbarButtonCreatedMessage())
SetHasTaskbarIconBeenCreated();
if (msg == sOOPPPluginFocusEvent) {
if (wParam == 1) {
// With OOPP, the plugin window exists in another process and is a child of
// this window. This window is a placeholder plugin window for the dom. We
// receive this event when the child window receives focus. (sent from
// PluginInstanceParent.cpp)
::SendMessage(mWnd, WM_MOUSEACTIVATE, 0, 0); // See nsPluginNativeWindowWin.cpp
} else {
// WM_KILLFOCUS was received by the child process.
if (sJustGotDeactivate) {
DispatchFocusToTopLevelWindow(false);
}
}
}
}
break;
}
//*aRetValue = result;
if (mWnd) {
return result;
}
else {
//Events which caused mWnd destruction and aren't consumed
//will crash during the Windows default processing.
return true;
}
}
/**************************************************************
*
* SECTION: Broadcast messaging
*
* Broadcast messages to all windows.
*
**************************************************************/
// Enumerate all child windows sending aMsg to each of them
BOOL CALLBACK nsWindow::BroadcastMsgToChildren(HWND aWnd, LPARAM aMsg)
{
WNDPROC winProc = (WNDPROC)::GetWindowLongPtrW(aWnd, GWLP_WNDPROC);
if (winProc == &nsWindow::WindowProc) {
// it's one of our windows so go ahead and send a message to it
::CallWindowProcW(winProc, aWnd, aMsg, 0, 0);
}
return TRUE;
}
// Enumerate all top level windows specifying that the children of each
// top level window should be enumerated. Do *not* send the message to
// each top level window since it is assumed that the toolkit will send
// aMsg to them directly.
BOOL CALLBACK nsWindow::BroadcastMsg(HWND aTopWindow, LPARAM aMsg)
{
// Iterate each of aTopWindows child windows sending the aMsg
// to each of them.
::EnumChildWindows(aTopWindow, nsWindow::BroadcastMsgToChildren, aMsg);
return TRUE;
}
/**************************************************************
*
* SECTION: Event processing helpers
*
* Special processing for certain event types and
* synthesized events.
*
**************************************************************/
int32_t
nsWindow::ClientMarginHitTestPoint(int32_t mx, int32_t my)
{
if (mSizeMode == nsSizeMode_Minimized ||
mSizeMode == nsSizeMode_Fullscreen) {
return HTCLIENT;
}
// Calculations are done in screen coords
RECT winRect;
GetWindowRect(mWnd, &winRect);
// hit return constants:
// HTBORDER - non-resizable border
// HTBOTTOM, HTLEFT, HTRIGHT, HTTOP - resizable border
// HTBOTTOMLEFT, HTBOTTOMRIGHT - resizable corner
// HTTOPLEFT, HTTOPRIGHT - resizable corner
// HTCAPTION - general title bar area
// HTCLIENT - area considered the client
// HTCLOSE - hovering over the close button
// HTMAXBUTTON - maximize button
// HTMINBUTTON - minimize button
int32_t testResult = HTCLIENT;
bool isResizable = (mBorderStyle & (eBorderStyle_all |
eBorderStyle_resizeh |
eBorderStyle_default)) > 0 ? true : false;
if (mSizeMode == nsSizeMode_Maximized)
isResizable = false;
// Ensure being accessible to borders of window. Even if contents are in
// this area, the area must behave as border.
nsIntMargin nonClientSize(std::max(mCaptionHeight - mNonClientOffset.top,
kResizableBorderMinSize),
std::max(mHorResizeMargin - mNonClientOffset.right,
kResizableBorderMinSize),
std::max(mVertResizeMargin - mNonClientOffset.bottom,
kResizableBorderMinSize),
std::max(mHorResizeMargin - mNonClientOffset.left,
kResizableBorderMinSize));
bool allowContentOverride = mSizeMode == nsSizeMode_Maximized ||
(mx >= winRect.left + nonClientSize.left &&
mx <= winRect.right - nonClientSize.right &&
my >= winRect.top + nonClientSize.top &&
my <= winRect.bottom - nonClientSize.bottom);
// The border size. If there is no content under mouse cursor, the border
// size should be larger than the values in system settings. Otherwise,
// contents under the mouse cursor should be able to override the behavior.
// E.g., user must expect that Firefox button always opens the popup menu
// even when the user clicks on the above edge of it.
nsIntMargin borderSize(std::max(nonClientSize.top, mVertResizeMargin),
std::max(nonClientSize.right, mHorResizeMargin),
std::max(nonClientSize.bottom, mVertResizeMargin),
std::max(nonClientSize.left, mHorResizeMargin));
bool top = false;
bool bottom = false;
bool left = false;
bool right = false;
if (my >= winRect.top && my < winRect.top + borderSize.top) {
top = true;
} else if (my <= winRect.bottom && my > winRect.bottom - borderSize.bottom) {
bottom = true;
}
// (the 2x case here doubles the resize area for corners)
int multiplier = (top || bottom) ? 2 : 1;
if (mx >= winRect.left &&
mx < winRect.left + (multiplier * borderSize.left)) {
left = true;
} else if (mx <= winRect.right &&
mx > winRect.right - (multiplier * borderSize.right)) {
right = true;
}
if (isResizable) {
if (top) {
testResult = HTTOP;
if (left)
testResult = HTTOPLEFT;
else if (right)
testResult = HTTOPRIGHT;
} else if (bottom) {
testResult = HTBOTTOM;
if (left)
testResult = HTBOTTOMLEFT;
else if (right)
testResult = HTBOTTOMRIGHT;
} else {
if (left)
testResult = HTLEFT;
if (right)
testResult = HTRIGHT;
}
} else {
if (top)
testResult = HTCAPTION;
else if (bottom || left || right)
testResult = HTBORDER;
}
if (!sIsInMouseCapture && allowContentOverride) {
POINT pt = { mx, my };
::ScreenToClient(mWnd, &pt);
if (pt.x == mCachedHitTestPoint.x && pt.y == mCachedHitTestPoint.y &&
TimeStamp::Now() - mCachedHitTestTime < TimeDuration::FromMilliseconds(HITTEST_CACHE_LIFETIME_MS)) {
testResult = mCachedHitTestResult;
} else {
WidgetMouseEvent event(true, NS_MOUSE_MOZHITTEST, this,
WidgetMouseEvent::eReal,
WidgetMouseEvent::eNormal);
event.refPoint = LayoutDeviceIntPoint(pt.x, pt.y);
event.inputSource = MOUSE_INPUT_SOURCE();
event.mFlags.mOnlyChromeDispatch = true;
bool result = DispatchWindowEvent(&event);
if (result) {
// The mouse is over a blank area
testResult = testResult == HTCLIENT ? HTCAPTION : testResult;
} else {
// There's content over the mouse pointer. Set HTCLIENT
// to possibly override a resizer border.
testResult = HTCLIENT;
}
mCachedHitTestPoint = pt;
mCachedHitTestTime = TimeStamp::Now();
mCachedHitTestResult = testResult;
}
}
return testResult;
}
void nsWindow::PostSleepWakeNotification(const bool aIsSleepMode)
{
if (aIsSleepMode == gIsSleepMode)
return;
gIsSleepMode = aIsSleepMode;
nsCOMPtr<nsIObserverService> observerService =
mozilla::services::GetObserverService();
if (observerService)
observerService->NotifyObservers(nullptr,
aIsSleepMode ? NS_WIDGET_SLEEP_OBSERVER_TOPIC :
NS_WIDGET_WAKE_OBSERVER_TOPIC, nullptr);
}
LRESULT nsWindow::ProcessCharMessage(const MSG &aMsg, bool *aEventDispatched)
{
if (IMEHandler::IsComposingOn(this)) {
IMEHandler::NotifyIME(this, REQUEST_TO_COMMIT_COMPOSITION);
}
// These must be checked here too as a lone WM_CHAR could be received
// if a child window didn't handle it (for example Alt+Space in a content
// window)
ModifierKeyState modKeyState;
NativeKey nativeKey(this, aMsg, modKeyState);
return static_cast<LRESULT>(nativeKey.HandleCharMessage(aMsg,
aEventDispatched));
}
LRESULT nsWindow::ProcessKeyUpMessage(const MSG &aMsg, bool *aEventDispatched)
{
if (IMEHandler::IsComposingOn(this)) {
return 0;
}
ModifierKeyState modKeyState;
NativeKey nativeKey(this, aMsg, modKeyState);
return static_cast<LRESULT>(nativeKey.HandleKeyUpMessage(aEventDispatched));
}
LRESULT nsWindow::ProcessKeyDownMessage(const MSG &aMsg,
bool *aEventDispatched)
{
// If this method doesn't call NativeKey::HandleKeyDownMessage(), this method
// must clean up the redirected message information itself. For more
// information, see above comment of
// RedirectedKeyDownMessageManager::AutoFlusher class definition in
// KeyboardLayout.h.
RedirectedKeyDownMessageManager::AutoFlusher redirectedMsgFlusher(this, aMsg);
ModifierKeyState modKeyState;
LRESULT result = 0;
if (!IMEHandler::IsComposingOn(this)) {
NativeKey nativeKey(this, aMsg, modKeyState);
result =
static_cast<LRESULT>(nativeKey.HandleKeyDownMessage(aEventDispatched));
// HandleKeyDownMessage cleaned up the redirected message information
// itself, so, we should do nothing.
redirectedMsgFlusher.Cancel();
}
if (aMsg.wParam == VK_MENU ||
(aMsg.wParam == VK_F10 && !modKeyState.IsShift())) {
// We need to let Windows handle this keypress,
// by returning false, if there's a native menu
// bar somewhere in our containing window hierarchy.
// Otherwise we handle the keypress and don't pass
// it on to Windows, by returning true.
bool hasNativeMenu = false;
HWND hWnd = mWnd;
while (hWnd) {
if (::GetMenu(hWnd)) {
hasNativeMenu = true;
break;
}
hWnd = ::GetParent(hWnd);
}
result = !hasNativeMenu;
}
return result;
}
nsresult
nsWindow::SynthesizeNativeKeyEvent(int32_t aNativeKeyboardLayout,
int32_t aNativeKeyCode,
uint32_t aModifierFlags,
const nsAString& aCharacters,
const nsAString& aUnmodifiedCharacters)
{
KeyboardLayout* keyboardLayout = KeyboardLayout::GetInstance();
return keyboardLayout->SynthesizeNativeKeyEvent(
this, aNativeKeyboardLayout, aNativeKeyCode, aModifierFlags,
aCharacters, aUnmodifiedCharacters);
}
nsresult
nsWindow::SynthesizeNativeMouseEvent(nsIntPoint aPoint,
uint32_t aNativeMessage,
uint32_t aModifierFlags)
{
::SetCursorPos(aPoint.x, aPoint.y);
INPUT input;
memset(&input, 0, sizeof(input));
input.type = INPUT_MOUSE;
input.mi.dwFlags = aNativeMessage;
::SendInput(1, &input, sizeof(INPUT));
return NS_OK;
}
nsresult
nsWindow::SynthesizeNativeMouseScrollEvent(nsIntPoint aPoint,
uint32_t aNativeMessage,
double aDeltaX,
double aDeltaY,
double aDeltaZ,
uint32_t aModifierFlags,
uint32_t aAdditionalFlags)
{
return MouseScrollHandler::SynthesizeNativeMouseScrollEvent(
this, aPoint, aNativeMessage,
(aNativeMessage == WM_MOUSEWHEEL || aNativeMessage == WM_VSCROLL) ?
static_cast<int32_t>(aDeltaY) : static_cast<int32_t>(aDeltaX),
aModifierFlags, aAdditionalFlags);
}
/**************************************************************
*
* SECTION: OnXXX message handlers
*
* For message handlers that need to be broken out or
* implemented in specific platform code.
*
**************************************************************/
void nsWindow::OnWindowPosChanged(WINDOWPOS* wp)
{
if (wp == nullptr)
return;
#ifdef WINSTATE_DEBUG_OUTPUT
if (mWnd == WinUtils::GetTopLevelHWND(mWnd)) {
PR_LOG(gWindowsLog, PR_LOG_ALWAYS, ("*** OnWindowPosChanged: [ top] "));
} else {
PR_LOG(gWindowsLog, PR_LOG_ALWAYS, ("*** OnWindowPosChanged: [child] "));
}
PR_LOG(gWindowsLog, PR_LOG_ALWAYS, ("WINDOWPOS flags:"));
if (wp->flags & SWP_FRAMECHANGED) {
PR_LOG(gWindowsLog, PR_LOG_ALWAYS, ("SWP_FRAMECHANGED "));
}
if (wp->flags & SWP_SHOWWINDOW) {
PR_LOG(gWindowsLog, PR_LOG_ALWAYS, ("SWP_SHOWWINDOW "));
}
if (wp->flags & SWP_NOSIZE) {
PR_LOG(gWindowsLog, PR_LOG_ALWAYS, ("SWP_NOSIZE "));
}
if (wp->flags & SWP_HIDEWINDOW) {
PR_LOG(gWindowsLog, PR_LOG_ALWAYS, ("SWP_HIDEWINDOW "));
}
if (wp->flags & SWP_NOZORDER) {
PR_LOG(gWindowsLog, PR_LOG_ALWAYS, ("SWP_NOZORDER "));
}
if (wp->flags & SWP_NOACTIVATE) {
PR_LOG(gWindowsLog, PR_LOG_ALWAYS, ("SWP_NOACTIVATE "));
}
PR_LOG(gWindowsLog, PR_LOG_ALWAYS, ("\n"));
#endif
// Handle window size mode changes
if (wp->flags & SWP_FRAMECHANGED && mSizeMode != nsSizeMode_Fullscreen) {
// Bug 566135 - Windows theme code calls show window on SW_SHOWMINIMIZED
// windows when fullscreen games disable desktop composition. If we're
// minimized and not being activated, ignore the event and let windows
// handle it.
if (mSizeMode == nsSizeMode_Minimized && (wp->flags & SWP_NOACTIVATE))
return;
WINDOWPLACEMENT pl;
pl.length = sizeof(pl);
::GetWindowPlacement(mWnd, &pl);
// Windows has just changed the size mode of this window. The call to
// SizeModeChanged will trigger a call into SetSizeMode where we will
// set the min/max window state again or for nsSizeMode_Normal, call
// SetWindow with a parameter of SW_RESTORE. There's no need however as
// this window's mode has already changed. Updating mSizeMode here
// insures the SetSizeMode call is a no-op. Addresses a bug on Win7 related
// to window docking. (bug 489258)
if (pl.showCmd == SW_SHOWMAXIMIZED)
mSizeMode = (mFullscreenMode ? nsSizeMode_Fullscreen : nsSizeMode_Maximized);
else if (pl.showCmd == SW_SHOWMINIMIZED)
mSizeMode = nsSizeMode_Minimized;
else if (mFullscreenMode)
mSizeMode = nsSizeMode_Fullscreen;
else
mSizeMode = nsSizeMode_Normal;
// If !sTrimOnMinimize, we minimize windows using SW_SHOWMINIMIZED (See
// SetSizeMode for internal calls, and WM_SYSCOMMAND for external). This
// prevents the working set from being trimmed but keeps the window active.
// After the window is minimized, we need to do some touch up work on the
// active window. (bugs 76831 & 499816)
if (!sTrimOnMinimize && nsSizeMode_Minimized == mSizeMode)
ActivateOtherWindowHelper(mWnd);
#ifdef WINSTATE_DEBUG_OUTPUT
switch (mSizeMode) {
case nsSizeMode_Normal:
PR_LOG(gWindowsLog, PR_LOG_ALWAYS,
("*** mSizeMode: nsSizeMode_Normal\n"));
break;
case nsSizeMode_Minimized:
PR_LOG(gWindowsLog, PR_LOG_ALWAYS,
("*** mSizeMode: nsSizeMode_Minimized\n"));
break;
case nsSizeMode_Maximized:
PR_LOG(gWindowsLog, PR_LOG_ALWAYS,
("*** mSizeMode: nsSizeMode_Maximized\n");
break;
default:
PR_LOG(gWindowsLog, PR_LOG_ALWAYS, ("*** mSizeMode: ??????\n");
break;
};
#endif
if (mWidgetListener)
mWidgetListener->SizeModeChanged(mSizeMode);
// If window was restored, window activation was bypassed during the
// SetSizeMode call originating from OnWindowPosChanging to avoid saving
// pre-restore attributes. Force activation now to get correct attributes.
if (mLastSizeMode != nsSizeMode_Normal && mSizeMode == nsSizeMode_Normal)
DispatchFocusToTopLevelWindow(true);
// Skip window size change events below on minimization.
if (mSizeMode == nsSizeMode_Minimized)
return;
}
// Handle window position changes
if (!(wp->flags & SWP_NOMOVE)) {
mBounds.x = wp->x;
mBounds.y = wp->y;
if (mWidgetListener) {
mWidgetListener->WindowMoved(this, wp->x, wp->y);
}
}
// Handle window size changes
if (!(wp->flags & SWP_NOSIZE)) {
RECT r;
int32_t newWidth, newHeight;
::GetWindowRect(mWnd, &r);
newWidth = r.right - r.left;
newHeight = r.bottom - r.top;
nsIntRect rect(wp->x, wp->y, newWidth, newHeight);
#ifdef MOZ_XUL
if (eTransparencyTransparent == mTransparencyMode)
ResizeTranslucentWindow(newWidth, newHeight);
#endif
if (newWidth > mLastSize.width)
{
RECT drect;
// getting wider
drect.left = wp->x + mLastSize.width;
drect.top = wp->y;
drect.right = drect.left + (newWidth - mLastSize.width);
drect.bottom = drect.top + newHeight;
::RedrawWindow(mWnd, &drect, nullptr,
RDW_INVALIDATE |
RDW_NOERASE |
RDW_NOINTERNALPAINT |
RDW_ERASENOW |
RDW_ALLCHILDREN);
}
if (newHeight > mLastSize.height)
{
RECT drect;
// getting taller
drect.left = wp->x;
drect.top = wp->y + mLastSize.height;
drect.right = drect.left + newWidth;
drect.bottom = drect.top + (newHeight - mLastSize.height);
::RedrawWindow(mWnd, &drect, nullptr,
RDW_INVALIDATE |
RDW_NOERASE |
RDW_NOINTERNALPAINT |
RDW_ERASENOW |
RDW_ALLCHILDREN);
}
mBounds.width = newWidth;
mBounds.height = newHeight;
mLastSize.width = newWidth;
mLastSize.height = newHeight;
#ifdef WINSTATE_DEBUG_OUTPUT
PR_LOG(gWindowsLog, PR_LOG_ALWAYS,
("*** Resize window: %d x %d x %d x %d\n", wp->x, wp->y,
newWidth, newHeight));
#endif
// If a maximized window is resized, recalculate the non-client margins.
if (mSizeMode == nsSizeMode_Maximized) {
if (UpdateNonClientMargins(nsSizeMode_Maximized, true)) {
// gecko resize event already sent by UpdateNonClientMargins.
return;
}
}
// Recalculate the width and height based on the client area for gecko events.
if (::GetClientRect(mWnd, &r)) {
rect.width = r.right - r.left;
rect.height = r.bottom - r.top;
}
// Send a gecko resize event
OnResize(rect);
}
}
// static
void nsWindow::ActivateOtherWindowHelper(HWND aWnd)
{
// Find the next window that is enabled, visible, and not minimized.
HWND hwndBelow = ::GetNextWindow(aWnd, GW_HWNDNEXT);
while (hwndBelow && (!::IsWindowEnabled(hwndBelow) || !::IsWindowVisible(hwndBelow) ||
::IsIconic(hwndBelow))) {
hwndBelow = ::GetNextWindow(hwndBelow, GW_HWNDNEXT);
}
// Push ourselves to the bottom of the stack, then activate the
// next window.
::SetWindowPos(aWnd, HWND_BOTTOM, 0, 0, 0, 0,
SWP_NOACTIVATE | SWP_NOMOVE | SWP_NOSIZE);
if (hwndBelow)
::SetForegroundWindow(hwndBelow);
// Play the minimize sound while we're here, since that is also
// forgotten when we use SW_SHOWMINIMIZED.
nsCOMPtr<nsISound> sound(do_CreateInstance("@mozilla.org/sound;1"));
if (sound) {
sound->PlaySystemSound(NS_LITERAL_STRING("Minimize"));
}
}
void nsWindow::OnWindowPosChanging(LPWINDOWPOS& info)
{
// Update non-client margins if the frame size is changing, and let the
// browser know we are changing size modes, so alternative css can kick in.
// If we're going into fullscreen mode, ignore this, since it'll reset
// margins to normal mode.
if ((info->flags & SWP_FRAMECHANGED && !(info->flags & SWP_NOSIZE)) &&
mSizeMode != nsSizeMode_Fullscreen) {
WINDOWPLACEMENT pl;
pl.length = sizeof(pl);
::GetWindowPlacement(mWnd, &pl);
nsSizeMode sizeMode;
if (pl.showCmd == SW_SHOWMAXIMIZED)
sizeMode = (mFullscreenMode ? nsSizeMode_Fullscreen : nsSizeMode_Maximized);
else if (pl.showCmd == SW_SHOWMINIMIZED)
sizeMode = nsSizeMode_Minimized;
else if (mFullscreenMode)
sizeMode = nsSizeMode_Fullscreen;
else
sizeMode = nsSizeMode_Normal;
if (mWidgetListener)
mWidgetListener->SizeModeChanged(sizeMode);
UpdateNonClientMargins(sizeMode, false);
}
// enforce local z-order rules
if (!(info->flags & SWP_NOZORDER)) {
HWND hwndAfter = info->hwndInsertAfter;
nsWindow *aboveWindow = 0;
nsWindowZ placement;
if (hwndAfter == HWND_BOTTOM)
placement = nsWindowZBottom;
else if (hwndAfter == HWND_TOP || hwndAfter == HWND_TOPMOST || hwndAfter == HWND_NOTOPMOST)
placement = nsWindowZTop;
else {
placement = nsWindowZRelative;
aboveWindow = WinUtils::GetNSWindowPtr(hwndAfter);
}
if (mWidgetListener) {
nsCOMPtr<nsIWidget> actualBelow = nullptr;
if (mWidgetListener->ZLevelChanged(false, &placement,
aboveWindow, getter_AddRefs(actualBelow))) {
if (placement == nsWindowZBottom)
info->hwndInsertAfter = HWND_BOTTOM;
else if (placement == nsWindowZTop)
info->hwndInsertAfter = HWND_TOP;
else {
info->hwndInsertAfter = (HWND)actualBelow->GetNativeData(NS_NATIVE_WINDOW);
}
}
}
}
// prevent rude external programs from making hidden window visible
if (mWindowType == eWindowType_invisible)
info->flags &= ~SWP_SHOWWINDOW;
}
void nsWindow::UserActivity()
{
// Check if we have the idle service, if not we try to get it.
if (!mIdleService) {
mIdleService = do_GetService("@mozilla.org/widget/idleservice;1");
}
// Check that we now have the idle service.
if (mIdleService) {
mIdleService->ResetIdleTimeOut(0);
}
}
bool nsWindow::OnTouch(WPARAM wParam, LPARAM lParam)
{
uint32_t cInputs = LOWORD(wParam);
PTOUCHINPUT pInputs = new TOUCHINPUT[cInputs];
if (mGesture.GetTouchInputInfo((HTOUCHINPUT)lParam, cInputs, pInputs)) {
WidgetTouchEvent* touchEventToSend = nullptr;
WidgetTouchEvent* touchEndEventToSend = nullptr;
nsEventStatus status;
// Walk across the touch point array processing each contact point
for (uint32_t i = 0; i < cInputs; i++) {
uint32_t msg;
if (pInputs[i].dwFlags & (TOUCHEVENTF_DOWN | TOUCHEVENTF_MOVE)) {
// Create a standard touch event to send
if (!touchEventToSend) {
touchEventToSend = new WidgetTouchEvent(true, NS_TOUCH_MOVE, this);
touchEventToSend->time = ::GetMessageTime();
ModifierKeyState modifierKeyState;
modifierKeyState.InitInputEvent(*touchEventToSend);
}
// Pres shell expects this event to be a NS_TOUCH_START if new contact
// points have been added since the last event sent.
if (pInputs[i].dwFlags & TOUCHEVENTF_DOWN) {
touchEventToSend->message = msg = NS_TOUCH_START;
} else {
msg = NS_TOUCH_MOVE;
}
} else if (pInputs[i].dwFlags & TOUCHEVENTF_UP) {
// Pres shell expects removed contacts points to be delivered in a
// separate NS_TOUCH_END event containing only the contact points
// that were removed.
if (!touchEndEventToSend) {
touchEndEventToSend = new WidgetTouchEvent(true, NS_TOUCH_END, this);
touchEndEventToSend->time = ::GetMessageTime();
ModifierKeyState modifierKeyState;
modifierKeyState.InitInputEvent(*touchEndEventToSend);
}
msg = NS_TOUCH_END;
} else {
// Filter out spurious Windows events we don't understand, like palm
// contact.
continue;
}
// Setup the touch point we'll append to the touch event array
nsPointWin touchPoint;
touchPoint.x = TOUCH_COORD_TO_PIXEL(pInputs[i].x);
touchPoint.y = TOUCH_COORD_TO_PIXEL(pInputs[i].y);
touchPoint.ScreenToClient(mWnd);
nsRefPtr<Touch> touch =
new Touch(pInputs[i].dwID,
touchPoint,
/* radius, if known */
pInputs[i].dwFlags & TOUCHINPUTMASKF_CONTACTAREA ?
nsIntPoint(
TOUCH_COORD_TO_PIXEL(pInputs[i].cxContact) / 2,
TOUCH_COORD_TO_PIXEL(pInputs[i].cyContact) / 2) :
nsIntPoint(1,1),
/* rotation angle and force */
0.0f, 0.0f);
// Append to the appropriate event
if (msg == NS_TOUCH_START || msg == NS_TOUCH_MOVE) {
touchEventToSend->touches.AppendElement(touch);
} else {
touchEndEventToSend->touches.AppendElement(touch);
}
}
// Dispatch touch start and move event if we have one.
if (touchEventToSend) {
DispatchEvent(touchEventToSend, status);
delete touchEventToSend;
}
// Dispatch touch end event if we have one.
if (touchEndEventToSend) {
DispatchEvent(touchEndEventToSend, status);
delete touchEndEventToSend;
}
}
delete [] pInputs;
mGesture.CloseTouchInputHandle((HTOUCHINPUT)lParam);
return true;
}
static int32_t RoundDown(double aDouble)
{
return aDouble > 0 ? static_cast<int32_t>(floor(aDouble)) :
static_cast<int32_t>(ceil(aDouble));
}
// Gesture event processing. Handles WM_GESTURE events.
bool nsWindow::OnGesture(WPARAM wParam, LPARAM lParam)
{
// Treatment for pan events which translate into scroll events:
if (mGesture.IsPanEvent(lParam)) {
if ( !mGesture.ProcessPanMessage(mWnd, wParam, lParam) )
return false; // ignore
nsEventStatus status;
WidgetWheelEvent wheelEvent(true, NS_WHEEL_WHEEL, this);
ModifierKeyState modifierKeyState;
modifierKeyState.InitInputEvent(wheelEvent);
wheelEvent.button = 0;
wheelEvent.time = ::GetMessageTime();
wheelEvent.inputSource = nsIDOMMouseEvent::MOZ_SOURCE_TOUCH;
bool endFeedback = true;
if (mGesture.PanDeltaToPixelScroll(wheelEvent)) {
DispatchEvent(&wheelEvent, status);
}
if (mDisplayPanFeedback) {
mGesture.UpdatePanFeedbackX(mWnd,
DeprecatedAbs(RoundDown(wheelEvent.overflowDeltaX)),
endFeedback);
mGesture.UpdatePanFeedbackY(mWnd,
DeprecatedAbs(RoundDown(wheelEvent.overflowDeltaY)),
endFeedback);
mGesture.PanFeedbackFinalize(mWnd, endFeedback);
}
mGesture.CloseGestureInfoHandle((HGESTUREINFO)lParam);
return true;
}
// Other gestures translate into simple gesture events:
WidgetSimpleGestureEvent event(true, 0, this, 0, 0.0);
if ( !mGesture.ProcessGestureMessage(mWnd, wParam, lParam, event) ) {
return false; // fall through to DefWndProc
}
// Polish up and send off the new event
ModifierKeyState modifierKeyState;
modifierKeyState.InitInputEvent(event);
event.button = 0;
event.time = ::GetMessageTime();
event.inputSource = nsIDOMMouseEvent::MOZ_SOURCE_TOUCH;
nsEventStatus status;
DispatchEvent(&event, status);
if (status == nsEventStatus_eIgnore) {
return false; // Ignored, fall through
}
// Only close this if we process and return true.
mGesture.CloseGestureInfoHandle((HGESTUREINFO)lParam);
return true; // Handled
}
static BOOL WINAPI EnumFirstChild(HWND hwnd, LPARAM lParam)
{
*((HWND*)lParam) = hwnd;
return FALSE;
}
static void InvalidatePluginAsWorkaround(nsWindow *aWindow, const nsIntRect &aRect)
{
aWindow->Invalidate(aRect);
// XXX - Even more evil workaround!! See bug 762948, flash's bottom
// level sandboxed window doesn't seem to get our invalidate. We send
// an invalidate to it manually. This is totally specialized for this
// bug, for other child window structures this will just be a more or
// less bogus invalidate but since that should not have any bad
// side-effects this will have to do for now.
HWND current = (HWND)aWindow->GetNativeData(NS_NATIVE_WINDOW);
RECT windowRect;
RECT parentRect;
::GetWindowRect(current, &parentRect);
HWND next = current;
do {
current = next;
::EnumChildWindows(current, &EnumFirstChild, (LPARAM)&next);
::GetWindowRect(next, &windowRect);
// This is relative to the screen, adjust it to be relative to the
// window we're reconfiguring.
windowRect.left -= parentRect.left;
windowRect.top -= parentRect.top;
} while (next != current && windowRect.top == 0 && windowRect.left == 0);
if (windowRect.top == 0 && windowRect.left == 0) {
RECT rect;
rect.left = aRect.x;
rect.top = aRect.y;
rect.right = aRect.XMost();
rect.bottom = aRect.YMost();
::InvalidateRect(next, &rect, FALSE);
}
}
nsresult
nsWindow::ConfigureChildren(const nsTArray<Configuration>& aConfigurations)
{
// XXXroc we could use BeginDeferWindowPos/DeferWindowPos/EndDeferWindowPos
// here, if that helps in some situations. So far I haven't seen a
// need.
for (uint32_t i = 0; i < aConfigurations.Length(); ++i) {
const Configuration& configuration = aConfigurations[i];
nsWindow* w = static_cast<nsWindow*>(configuration.mChild);
NS_ASSERTION(w->GetParent() == this,
"Configured widget is not a child");
nsresult rv = w->SetWindowClipRegion(configuration.mClipRegion, true);
NS_ENSURE_SUCCESS(rv, rv);
nsIntRect bounds;
w->GetBounds(bounds);
if (bounds.Size() != configuration.mBounds.Size()) {
w->Resize(configuration.mBounds.x, configuration.mBounds.y,
configuration.mBounds.width, configuration.mBounds.height,
true);
} else if (bounds.TopLeft() != configuration.mBounds.TopLeft()) {
w->Move(configuration.mBounds.x, configuration.mBounds.y);
if (gfxWindowsPlatform::GetPlatform()->GetRenderMode() ==
gfxWindowsPlatform::RENDER_DIRECT2D ||
GetLayerManager()->GetBackendType() != LAYERS_BASIC) {
// XXX - Workaround for Bug 587508. This will invalidate the part of the
// plugin window that might be touched by moving content somehow. The
// underlying problem should be found and fixed!
nsIntRegion r;
r.Sub(bounds, configuration.mBounds);
r.MoveBy(-bounds.x,
-bounds.y);
nsIntRect toInvalidate = r.GetBounds();
InvalidatePluginAsWorkaround(w, toInvalidate);
}
}
rv = w->SetWindowClipRegion(configuration.mClipRegion, false);
NS_ENSURE_SUCCESS(rv, rv);
}
return NS_OK;
}
static HRGN
CreateHRGNFromArray(const nsTArray<nsIntRect>& aRects)
{
int32_t size = sizeof(RGNDATAHEADER) + sizeof(RECT)*aRects.Length();
nsAutoTArray<uint8_t,100> buf;
if (!buf.SetLength(size))
return nullptr;
RGNDATA* data = reinterpret_cast<RGNDATA*>(buf.Elements());
RECT* rects = reinterpret_cast<RECT*>(data->Buffer);
data->rdh.dwSize = sizeof(data->rdh);
data->rdh.iType = RDH_RECTANGLES;
data->rdh.nCount = aRects.Length();
nsIntRect bounds;
for (uint32_t i = 0; i < aRects.Length(); ++i) {
const nsIntRect& r = aRects[i];
bounds.UnionRect(bounds, r);
::SetRect(&rects[i], r.x, r.y, r.XMost(), r.YMost());
}
::SetRect(&data->rdh.rcBound, bounds.x, bounds.y, bounds.XMost(), bounds.YMost());
return ::ExtCreateRegion(nullptr, buf.Length(), data);
}
static void
ArrayFromRegion(const nsIntRegion& aRegion, nsTArray<nsIntRect>& aRects)
{
const nsIntRect* r;
for (nsIntRegionRectIterator iter(aRegion); (r = iter.Next());) {
aRects.AppendElement(*r);
}
}
nsresult
nsWindow::SetWindowClipRegion(const nsTArray<nsIntRect>& aRects,
bool aIntersectWithExisting)
{
if (!aIntersectWithExisting) {
if (!StoreWindowClipRegion(aRects))
return NS_OK;
} else {
// In this case still early return if nothing changed.
if (mClipRects && mClipRectCount == aRects.Length() &&
memcmp(mClipRects,
aRects.Elements(),
sizeof(nsIntRect)*mClipRectCount) == 0) {
return NS_OK;
}
// get current rects
nsTArray<nsIntRect> currentRects;
GetWindowClipRegion(&currentRects);
// create region from them
nsIntRegion currentRegion = RegionFromArray(currentRects);
// create region from new rects
nsIntRegion newRegion = RegionFromArray(aRects);
// intersect regions
nsIntRegion intersection;
intersection.And(currentRegion, newRegion);
// create int rect array from intersection
nsTArray<nsIntRect> rects;
ArrayFromRegion(intersection, rects);
// store
if (!StoreWindowClipRegion(rects))
return NS_OK;
}
HRGN dest = CreateHRGNFromArray(aRects);
if (!dest)
return NS_ERROR_OUT_OF_MEMORY;
if (aIntersectWithExisting) {
HRGN current = ::CreateRectRgn(0, 0, 0, 0);
if (current) {
if (::GetWindowRgn(mWnd, current) != 0 /*ERROR*/) {
::CombineRgn(dest, dest, current, RGN_AND);
}
::DeleteObject(current);
}
}
// If a plugin is not visible, especially if it is in a background tab,
// it should not be able to steal keyboard focus. This code checks whether
// the region that the plugin is being clipped to is NULLREGION. If it is,
// the plugin window gets disabled.
if(mWindowType == eWindowType_plugin) {
if(NULLREGION == ::CombineRgn(dest, dest, dest, RGN_OR)) {
::ShowWindow(mWnd, SW_HIDE);
::EnableWindow(mWnd, FALSE);
} else {
::EnableWindow(mWnd, TRUE);
::ShowWindow(mWnd, SW_SHOW);
}
}
if (!::SetWindowRgn(mWnd, dest, TRUE)) {
::DeleteObject(dest);
return NS_ERROR_FAILURE;
}
return NS_OK;
}
// WM_DESTROY event handler
void nsWindow::OnDestroy()
{
mOnDestroyCalled = true;
// Make sure we don't get destroyed in the process of tearing down.
nsCOMPtr<nsIWidget> kungFuDeathGrip(this);
// Dispatch the destroy notification.
if (!mInDtor)
NotifyWindowDestroyed();
// Prevent the widget from sending additional events.
mWidgetListener = nullptr;
mAttachedWidgetListener = nullptr;
// Free our subclass and clear |this| stored in the window props. We will no longer
// receive events from Windows after this point.
SubclassWindow(FALSE);
// Once mWidgetListener is cleared and the subclass is reset, sCurrentWindow can be
// cleared. (It's used in tracking windows for mouse events.)
if (sCurrentWindow == this)
sCurrentWindow = nullptr;
// Disconnects us from our parent, will call our GetParent().
nsBaseWidget::Destroy();
// Release references to children, device context, toolkit, and app shell.
nsBaseWidget::OnDestroy();
// Clear our native parent handle.
// XXX Windows will take care of this in the proper order, and SetParent(nullptr)'s
// remove child on the parent already took place in nsBaseWidget's Destroy call above.
//SetParent(nullptr);
mParent = nullptr;
// We have to destroy the native drag target before we null out our window pointer.
EnableDragDrop(false);
// If we're going away and for some reason we're still the rollup widget, rollup and
// turn off capture.
nsIRollupListener* rollupListener = nsBaseWidget::GetActiveRollupListener();
nsCOMPtr<nsIWidget> rollupWidget;
if (rollupListener) {
rollupWidget = rollupListener->GetRollupWidget();
}
if (this == rollupWidget) {
if ( rollupListener )
rollupListener->Rollup(0, nullptr);
CaptureRollupEvents(nullptr, false);
}
IMEHandler::OnDestroyWindow(this);
// Turn off mouse trails if enabled.
MouseTrailer* mtrailer = nsToolkit::gMouseTrailer;
if (mtrailer) {
if (mtrailer->GetMouseTrailerWindow() == mWnd)
mtrailer->DestroyTimer();
if (mtrailer->GetCaptureWindow() == mWnd)
mtrailer->SetCaptureWindow(nullptr);
}
// Free GDI window class objects
if (mBrush) {
VERIFY(::DeleteObject(mBrush));
mBrush = nullptr;
}
// Destroy any custom cursor resources.
if (mCursor == -1)
SetCursor(eCursor_standard);
#ifdef MOZ_XUL
// Reset transparency
if (eTransparencyTransparent == mTransparencyMode)
SetupTranslucentWindowMemoryBitmap(eTransparencyOpaque);
#endif
// Finalize panning feedback to possibly restore window displacement
mGesture.PanFeedbackFinalize(mWnd, true);
// Clear the main HWND.
mWnd = nullptr;
}
// Send a resize message to the listener
bool nsWindow::OnResize(nsIntRect &aWindowRect)
{
#ifdef CAIRO_HAS_D2D_SURFACE
if (mD2DWindowSurface) {
mD2DWindowSurface = nullptr;
Invalidate();
}
#endif
bool result = mWidgetListener ?
mWidgetListener->WindowResized(this, aWindowRect.width, aWindowRect.height) : false;
// If there is an attached view, inform it as well as the normal widget listener.
if (mAttachedWidgetListener) {
return mAttachedWidgetListener->WindowResized(this, aWindowRect.width, aWindowRect.height);
}
return result;
}
bool nsWindow::OnHotKey(WPARAM wParam, LPARAM lParam)
{
return true;
}
// Can be overriden. Controls auto-erase of background.
bool nsWindow::AutoErase(HDC dc)
{
return false;
}
void
nsWindow::AllowD3D9Callback(nsWindow *aWindow)
{
if (aWindow->mLayerManager && !aWindow->ShouldUseOffMainThreadCompositing()) {
aWindow->mLayerManager->Destroy();
aWindow->mLayerManager = nullptr;
}
}
void
nsWindow::AllowD3D9WithReinitializeCallback(nsWindow *aWindow)
{
if (aWindow->mLayerManager && !aWindow->ShouldUseOffMainThreadCompositing()) {
aWindow->mLayerManager->Destroy();
aWindow->mLayerManager = nullptr;
(void) aWindow->GetLayerManager();
}
}
void
nsWindow::StartAllowingD3D9(bool aReinitialize)
{
sAllowD3D9 = true;
LayerManagerPrefs prefs;
GetLayerManagerPrefs(&prefs);
if (prefs.mDisableAcceleration) {
// The guarantee here is, if there's *any* chance that after we
// throw out our layer managers we'd create at least one new,
// accelerated one, we *will* throw out all the current layer
// managers. We early-return here because currently, if
// |disableAcceleration|, we will always use basic managers and
// it's a waste to recreate them. If we're using OMTC we don't want to
// recreate out layer manager and its compositor either. This is even
// more wasteful.
//
// NB: the above implies that it's eminently possible for us to
// skip this early return but still recreate basic managers.
// That's OK. It's *not* OK to take this early return when we
// *might* have created an accelerated manager.
return;
}
if (aReinitialize) {
EnumAllWindows(AllowD3D9WithReinitializeCallback);
} else {
EnumAllWindows(AllowD3D9Callback);
}
}
void
nsWindow::GetPreferredCompositorBackends(nsTArray<LayersBackend>& aHints)
{
LayerManagerPrefs prefs;
GetLayerManagerPrefs(&prefs);
if (!prefs.mDisableAcceleration) {
if (prefs.mPreferOpenGL) {
aHints.AppendElement(LAYERS_OPENGL);
}
if (!prefs.mPreferD3D9) {
aHints.AppendElement(LAYERS_D3D11);
}
aHints.AppendElement(LAYERS_D3D9);
}
aHints.AppendElement(LAYERS_BASIC);
}
void
nsWindow::WindowUsesOMTC()
{
ULONG_PTR style = ::GetClassLongPtr(mWnd, GCL_STYLE);
if (!style) {
NS_WARNING("Could not get window class style");
return;
}
style |= CS_HREDRAW | CS_VREDRAW;
DebugOnly<ULONG_PTR> result = ::SetClassLongPtr(mWnd, GCL_STYLE, style);
NS_WARN_IF_FALSE(result, "Could not reset window class style");
}
bool
nsWindow::HasBogusPopupsDropShadowOnMultiMonitor() {
if (sHasBogusPopupsDropShadowOnMultiMonitor == TRI_UNKNOWN) {
// Since any change in the preferences requires a restart, this can be
// done just once.
// Check for Direct2D first.
sHasBogusPopupsDropShadowOnMultiMonitor =
gfxWindowsPlatform::GetPlatform()->GetRenderMode() ==
gfxWindowsPlatform::RENDER_DIRECT2D ? TRI_TRUE : TRI_FALSE;
if (!sHasBogusPopupsDropShadowOnMultiMonitor) {
// Otherwise check if Direct3D 9 may be used.
LayerManagerPrefs prefs;
GetLayerManagerPrefs(&prefs);
if (!prefs.mDisableAcceleration && !prefs.mPreferOpenGL) {
nsCOMPtr<nsIGfxInfo> gfxInfo = do_GetService("@mozilla.org/gfx/info;1");
if (gfxInfo) {
int32_t status;
if (NS_SUCCEEDED(gfxInfo->GetFeatureStatus(nsIGfxInfo::FEATURE_DIRECT3D_9_LAYERS, &status))) {
if (status == nsIGfxInfo::FEATURE_NO_INFO || prefs.mForceAcceleration)
{
sHasBogusPopupsDropShadowOnMultiMonitor = TRI_TRUE;
}
}
}
}
}
}
return !!sHasBogusPopupsDropShadowOnMultiMonitor;
}
void
nsWindow::OnSysColorChanged()
{
if (mWindowType == eWindowType_invisible) {
::EnumThreadWindows(GetCurrentThreadId(), nsWindow::BroadcastMsg, WM_SYSCOLORCHANGE);
}
else {
// Note: This is sent for child windows as well as top-level windows.
// The Win32 toolkit normally only sends these events to top-level windows.
// But we cycle through all of the childwindows and send it to them as well
// so all presentations get notified properly.
// See nsWindow::GlobalMsgWindowProc.
NotifySysColorChanged();
}
}
/**************************************************************
**************************************************************
**
** BLOCK: IME management and accessibility
**
** Handles managing IME input and accessibility.
**
**************************************************************
**************************************************************/
NS_IMETHODIMP
nsWindow::NotifyIME(NotificationToIME aNotification)
{
return IMEHandler::NotifyIME(this, aNotification);
}
NS_IMETHODIMP_(void)
nsWindow::SetInputContext(const InputContext& aContext,
const InputContextAction& aAction)
{
InputContext newInputContext = aContext;
IMEHandler::SetInputContext(this, newInputContext, aAction);
mInputContext = newInputContext;
}
NS_IMETHODIMP_(InputContext)
nsWindow::GetInputContext()
{
mInputContext.mIMEState.mOpen = IMEState::CLOSED;
if (WinUtils::IsIMEEnabled(mInputContext) && IMEHandler::GetOpenState(this)) {
mInputContext.mIMEState.mOpen = IMEState::OPEN;
} else {
mInputContext.mIMEState.mOpen = IMEState::CLOSED;
}
return mInputContext;
}
NS_IMETHODIMP
nsWindow::GetToggledKeyState(uint32_t aKeyCode, bool* aLEDState)
{
#ifdef DEBUG_KBSTATE
PR_LOG(gWindowsLog, PR_LOG_ALWAYS, ("GetToggledKeyState\n"));
#endif
NS_ENSURE_ARG_POINTER(aLEDState);
*aLEDState = (::GetKeyState(aKeyCode) & 1) != 0;
return NS_OK;
}
NS_IMETHODIMP
nsWindow::NotifyIMEOfTextChange(uint32_t aStart,
uint32_t aOldEnd,
uint32_t aNewEnd)
{
return IMEHandler::NotifyIMEOfTextChange(aStart, aOldEnd, aNewEnd);
}
nsIMEUpdatePreference
nsWindow::GetIMEUpdatePreference()
{
return IMEHandler::GetUpdatePreference();
}
#ifdef ACCESSIBILITY
#ifdef DEBUG
#define NS_LOG_WMGETOBJECT(aWnd, aHwnd, aAcc) \
if (a11y::logging::IsEnabled(a11y::logging::ePlatforms)) { \
printf("Get the window:\n {\n HWND: %d, parent HWND: %d, wndobj: %p,\n",\
aHwnd, ::GetParent(aHwnd), aWnd); \
printf(" acc: %p", aAcc); \
if (aAcc) { \
nsAutoString name; \
aAcc->Name(name); \
printf(", accname: %s", NS_ConvertUTF16toUTF8(name).get()); \
} \
printf("\n }\n"); \
}
#else
#define NS_LOG_WMGETOBJECT(aWnd, aHwnd, aAcc)
#endif
a11y::Accessible*
nsWindow::GetAccessible()
{
// If the pref was ePlatformIsDisabled, return null here, disabling a11y.
if (a11y::PlatformDisabledState() == a11y::ePlatformIsDisabled)
return nullptr;
if (mInDtor || mOnDestroyCalled || mWindowType == eWindowType_invisible) {
return nullptr;
}
// In case of popup window return a popup accessible.
nsView* view = nsView::GetViewFor(this);
if (view) {
nsIFrame* frame = view->GetFrame();
if (frame && nsLayoutUtils::IsPopup(frame)) {
nsCOMPtr<nsIAccessibilityService> accService =
services::GetAccessibilityService();
if (accService) {
a11y::DocAccessible* docAcc =
GetAccService()->GetDocAccessible(frame->PresContext()->PresShell());
if (docAcc) {
NS_LOG_WMGETOBJECT(this, mWnd,
docAcc->GetAccessibleOrDescendant(frame->GetContent()));
return docAcc->GetAccessibleOrDescendant(frame->GetContent());
}
}
}
}
// otherwise root document accessible.
NS_LOG_WMGETOBJECT(this, mWnd, GetRootAccessible());
return GetRootAccessible();
}
#endif
/**************************************************************
**************************************************************
**
** BLOCK: Transparency
**
** Window transparency helpers.
**
**************************************************************
**************************************************************/
#ifdef MOZ_XUL
void nsWindow::ResizeTranslucentWindow(int32_t aNewWidth, int32_t aNewHeight, bool force)
{
if (!force && aNewWidth == mBounds.width && aNewHeight == mBounds.height)
return;
#ifdef CAIRO_HAS_D2D_SURFACE
if (gfxWindowsPlatform::GetPlatform()->GetRenderMode() ==
gfxWindowsPlatform::RENDER_DIRECT2D) {
nsRefPtr<gfxD2DSurface> newSurface =
new gfxD2DSurface(gfxIntSize(aNewWidth, aNewHeight), gfxImageFormatARGB32);
mTransparentSurface = newSurface;
mMemoryDC = nullptr;
} else
#endif
{
nsRefPtr<gfxWindowsSurface> newSurface =
new gfxWindowsSurface(gfxIntSize(aNewWidth, aNewHeight), gfxImageFormatARGB32);
mTransparentSurface = newSurface;
mMemoryDC = newSurface->GetDC();
}
}
void nsWindow::SetWindowTranslucencyInner(nsTransparencyMode aMode)
{
if (aMode == mTransparencyMode)
return;
// stop on dialogs and popups!
HWND hWnd = WinUtils::GetTopLevelHWND(mWnd, true);
nsWindow* parent = WinUtils::GetNSWindowPtr(hWnd);
if (!parent)
{
NS_WARNING("Trying to use transparent chrome in an embedded context");
return;
}
if (parent != this) {
NS_WARNING("Setting SetWindowTranslucencyInner on a parent this is not us!");
}
if (aMode == eTransparencyTransparent) {
// If we're switching to the use of a transparent window, hide the chrome
// on our parent.
HideWindowChrome(true);
} else if (mHideChrome && mTransparencyMode == eTransparencyTransparent) {
// if we're switching out of transparent, re-enable our parent's chrome.
HideWindowChrome(false);
}
LONG_PTR style = ::GetWindowLongPtrW(hWnd, GWL_STYLE),
exStyle = ::GetWindowLongPtr(hWnd, GWL_EXSTYLE);
if (parent->mIsVisible)
style |= WS_VISIBLE;
if (parent->mSizeMode == nsSizeMode_Maximized)
style |= WS_MAXIMIZE;
else if (parent->mSizeMode == nsSizeMode_Minimized)
style |= WS_MINIMIZE;
if (aMode == eTransparencyTransparent)
exStyle |= WS_EX_LAYERED;
else
exStyle &= ~WS_EX_LAYERED;
VERIFY_WINDOW_STYLE(style);
::SetWindowLongPtrW(hWnd, GWL_STYLE, style);
::SetWindowLongPtrW(hWnd, GWL_EXSTYLE, exStyle);
if (HasGlass())
memset(&mGlassMargins, 0, sizeof mGlassMargins);
mTransparencyMode = aMode;
SetupTranslucentWindowMemoryBitmap(aMode);
UpdateGlass();
}
void nsWindow::SetupTranslucentWindowMemoryBitmap(nsTransparencyMode aMode)
{
if (eTransparencyTransparent == aMode) {
ResizeTranslucentWindow(mBounds.width, mBounds.height, true);
} else {
mTransparentSurface = nullptr;
mMemoryDC = nullptr;
}
}
void nsWindow::ClearTranslucentWindow()
{
if (mTransparentSurface) {
nsRefPtr<gfxContext> thebesContext = new gfxContext(mTransparentSurface);
thebesContext->SetOperator(gfxContext::OPERATOR_CLEAR);
thebesContext->Paint();
UpdateTranslucentWindow();
}
}
nsresult nsWindow::UpdateTranslucentWindow()
{
if (mBounds.IsEmpty())
return NS_OK;
::GdiFlush();
BLENDFUNCTION bf = { AC_SRC_OVER, 0, 255, AC_SRC_ALPHA };
SIZE winSize = { mBounds.width, mBounds.height };
POINT srcPos = { 0, 0 };
HWND hWnd = WinUtils::GetTopLevelHWND(mWnd, true);
RECT winRect;
::GetWindowRect(hWnd, &winRect);
#ifdef CAIRO_HAS_D2D_SURFACE
if (gfxWindowsPlatform::GetPlatform()->GetRenderMode() ==
gfxWindowsPlatform::RENDER_DIRECT2D) {
mMemoryDC = static_cast<gfxD2DSurface*>(mTransparentSurface.get())->
GetDC(true);
}
#endif
// perform the alpha blend
bool updateSuccesful =
::UpdateLayeredWindow(hWnd, nullptr, (POINT*)&winRect, &winSize, mMemoryDC,
&srcPos, 0, &bf, ULW_ALPHA);
#ifdef CAIRO_HAS_D2D_SURFACE
if (gfxWindowsPlatform::GetPlatform()->GetRenderMode() ==
gfxWindowsPlatform::RENDER_DIRECT2D) {
nsIntRect r(0, 0, 0, 0);
static_cast<gfxD2DSurface*>(mTransparentSurface.get())->ReleaseDC(&r);
}
#endif
if (!updateSuccesful) {
return NS_ERROR_FAILURE;
}
return NS_OK;
}
#endif //MOZ_XUL
/**************************************************************
**************************************************************
**
** BLOCK: Popup rollup hooks
**
** Deals with CaptureRollup on popup windows.
**
**************************************************************
**************************************************************/
// Schedules a timer for a window, so we can rollup after processing the hook event
void nsWindow::ScheduleHookTimer(HWND aWnd, UINT aMsgId)
{
// In some cases multiple hooks may be scheduled
// so ignore any other requests once one timer is scheduled
if (sHookTimerId == 0) {
// Remember the window handle and the message ID to be used later
sRollupMsgId = aMsgId;
sRollupMsgWnd = aWnd;
// Schedule native timer for doing the rollup after
// this event is done being processed
sHookTimerId = ::SetTimer(nullptr, 0, 0, (TIMERPROC)HookTimerForPopups);
NS_ASSERTION(sHookTimerId, "Timer couldn't be created.");
}
}
#ifdef POPUP_ROLLUP_DEBUG_OUTPUT
int gLastMsgCode = 0;
extern MSGFEventMsgInfo gMSGFEvents[];
#endif
// Process Menu messages, rollup when popup is clicked.
LRESULT CALLBACK nsWindow::MozSpecialMsgFilter(int code, WPARAM wParam, LPARAM lParam)
{
#ifdef POPUP_ROLLUP_DEBUG_OUTPUT
if (sProcessHook) {
MSG* pMsg = (MSG*)lParam;
int inx = 0;
while (gMSGFEvents[inx].mId != code && gMSGFEvents[inx].mStr != nullptr) {
inx++;
}
if (code != gLastMsgCode) {
if (gMSGFEvents[inx].mId == code) {
#ifdef DEBUG
PR_LOG(gWindowsLog, PR_LOG_ALWAYS,
("MozSpecialMessageProc - code: 0x%X - %s hw: %p\n",
code, gMSGFEvents[inx].mStr, pMsg->hwnd));
#endif
} else {
#ifdef DEBUG
PR_LOG(gWindowsLog, PR_LOG_ALWAYS,
("MozSpecialMessageProc - code: 0x%X - %d hw: %p\n",
code, gMSGFEvents[inx].mId, pMsg->hwnd));
#endif
}
gLastMsgCode = code;
}
PrintEvent(pMsg->message, FALSE, FALSE);
}
#endif // #ifdef POPUP_ROLLUP_DEBUG_OUTPUT
if (sProcessHook && code == MSGF_MENU) {
MSG* pMsg = (MSG*)lParam;
ScheduleHookTimer( pMsg->hwnd, pMsg->message);
}
return ::CallNextHookEx(sMsgFilterHook, code, wParam, lParam);
}
// Process all mouse messages. Roll up when a click is in a native window
// that doesn't have an nsIWidget.
LRESULT CALLBACK nsWindow::MozSpecialMouseProc(int code, WPARAM wParam, LPARAM lParam)
{
if (sProcessHook) {
switch (WinUtils::GetNativeMessage(wParam)) {
case WM_LBUTTONDOWN:
case WM_RBUTTONDOWN:
case WM_MBUTTONDOWN:
case WM_MOUSEWHEEL:
case WM_MOUSEHWHEEL:
{
MOUSEHOOKSTRUCT* ms = (MOUSEHOOKSTRUCT*)lParam;
nsIWidget* mozWin = WinUtils::GetNSWindowPtr(ms->hwnd);
if (mozWin) {
// If this window is windowed plugin window, the mouse events are not
// sent to us.
if (static_cast<nsWindow*>(mozWin)->mWindowType == eWindowType_plugin)
ScheduleHookTimer(ms->hwnd, (UINT)wParam);
} else {
ScheduleHookTimer(ms->hwnd, (UINT)wParam);
}
break;
}
}
}
return ::CallNextHookEx(sCallMouseHook, code, wParam, lParam);
}
// Process all messages. Roll up when the window is moving, or
// is resizing or when maximized or mininized.
LRESULT CALLBACK nsWindow::MozSpecialWndProc(int code, WPARAM wParam, LPARAM lParam)
{
#ifdef POPUP_ROLLUP_DEBUG_OUTPUT
if (sProcessHook) {
CWPSTRUCT* cwpt = (CWPSTRUCT*)lParam;
PrintEvent(cwpt->message, FALSE, FALSE);
}
#endif
if (sProcessHook) {
CWPSTRUCT* cwpt = (CWPSTRUCT*)lParam;
if (cwpt->message == WM_MOVING ||
cwpt->message == WM_SIZING ||
cwpt->message == WM_GETMINMAXINFO) {
ScheduleHookTimer(cwpt->hwnd, (UINT)cwpt->message);
}
}
return ::CallNextHookEx(sCallProcHook, code, wParam, lParam);
}
// Register the special "hooks" for dropdown processing.
void nsWindow::RegisterSpecialDropdownHooks()
{
NS_ASSERTION(!sMsgFilterHook, "sMsgFilterHook must be NULL!");
NS_ASSERTION(!sCallProcHook, "sCallProcHook must be NULL!");
DISPLAY_NMM_PRT("***************** Installing Msg Hooks ***************\n");
// Install msg hook for moving the window and resizing
if (!sMsgFilterHook) {
DISPLAY_NMM_PRT("***** Hooking sMsgFilterHook!\n");
sMsgFilterHook = SetWindowsHookEx(WH_MSGFILTER, MozSpecialMsgFilter,
nullptr, GetCurrentThreadId());
#ifdef POPUP_ROLLUP_DEBUG_OUTPUT
if (!sMsgFilterHook) {
PR_LOG(gWindowsLog, PR_LOG_ALWAYS,
("***** SetWindowsHookEx is NOT installed for WH_MSGFILTER!\n"));
}
#endif
}
// Install msg hook for menus
if (!sCallProcHook) {
DISPLAY_NMM_PRT("***** Hooking sCallProcHook!\n");
sCallProcHook = SetWindowsHookEx(WH_CALLWNDPROC, MozSpecialWndProc,
nullptr, GetCurrentThreadId());
#ifdef POPUP_ROLLUP_DEBUG_OUTPUT
if (!sCallProcHook) {
PR_LOG(gWindowsLog, PR_LOG_ALWAYS,
("***** SetWindowsHookEx is NOT installed for WH_CALLWNDPROC!\n"));
}
#endif
}
// Install msg hook for the mouse
if (!sCallMouseHook) {
DISPLAY_NMM_PRT("***** Hooking sCallMouseHook!\n");
sCallMouseHook = SetWindowsHookEx(WH_MOUSE, MozSpecialMouseProc,
nullptr, GetCurrentThreadId());
#ifdef POPUP_ROLLUP_DEBUG_OUTPUT
if (!sCallMouseHook) {
PR_LOG(gWindowsLog, PR_LOG_ALWAYS,
("***** SetWindowsHookEx is NOT installed for WH_MOUSE!\n"));
}
#endif
}
}
// Unhook special message hooks for dropdowns.
void nsWindow::UnregisterSpecialDropdownHooks()
{
DISPLAY_NMM_PRT("***************** De-installing Msg Hooks ***************\n");
if (sCallProcHook) {
DISPLAY_NMM_PRT("***** Unhooking sCallProcHook!\n");
if (!::UnhookWindowsHookEx(sCallProcHook)) {
DISPLAY_NMM_PRT("***** UnhookWindowsHookEx failed for sCallProcHook!\n");
}
sCallProcHook = nullptr;
}
if (sMsgFilterHook) {
DISPLAY_NMM_PRT("***** Unhooking sMsgFilterHook!\n");
if (!::UnhookWindowsHookEx(sMsgFilterHook)) {
DISPLAY_NMM_PRT("***** UnhookWindowsHookEx failed for sMsgFilterHook!\n");
}
sMsgFilterHook = nullptr;
}
if (sCallMouseHook) {
DISPLAY_NMM_PRT("***** Unhooking sCallMouseHook!\n");
if (!::UnhookWindowsHookEx(sCallMouseHook)) {
DISPLAY_NMM_PRT("***** UnhookWindowsHookEx failed for sCallMouseHook!\n");
}
sCallMouseHook = nullptr;
}
}
// This timer is designed to only fire one time at most each time a "hook" function
// is used to rollup the dropdown. In some cases, the timer may be scheduled from the
// hook, but that hook event or a subsequent event may roll up the dropdown before
// this timer function is executed.
//
// For example, if an MFC control takes focus, the combobox will lose focus and rollup
// before this function fires.
VOID CALLBACK nsWindow::HookTimerForPopups(HWND hwnd, UINT uMsg, UINT idEvent, DWORD dwTime)
{
if (sHookTimerId != 0) {
// if the window is nullptr then we need to use the ID to kill the timer
BOOL status = ::KillTimer(nullptr, sHookTimerId);
NS_ASSERTION(status, "Hook Timer was not killed.");
sHookTimerId = 0;
}
if (sRollupMsgId != 0) {
// Note: DealWithPopups does the check to make sure that the rollup widget is set.
LRESULT popupHandlingResult;
nsAutoRollup autoRollup;
DealWithPopups(sRollupMsgWnd, sRollupMsgId, 0, 0, &popupHandlingResult);
sRollupMsgId = 0;
sRollupMsgWnd = nullptr;
}
}
BOOL CALLBACK nsWindow::ClearResourcesCallback(HWND aWnd, LPARAM aMsg)
{
nsWindow *window = WinUtils::GetNSWindowPtr(aWnd);
if (window) {
window->ClearCachedResources();
}
return TRUE;
}
void
nsWindow::ClearCachedResources()
{
#ifdef CAIRO_HAS_D2D_SURFACE
mD2DWindowSurface = nullptr;
#endif
if (mLayerManager &&
mLayerManager->GetBackendType() == LAYERS_BASIC) {
mLayerManager->ClearCachedResources();
}
::EnumChildWindows(mWnd, nsWindow::ClearResourcesCallback, 0);
}
static bool IsDifferentThreadWindow(HWND aWnd)
{
return ::GetCurrentThreadId() != ::GetWindowThreadProcessId(aWnd, nullptr);
}
bool
nsWindow::EventIsInsideWindow(UINT Msg, nsWindow* aWindow)
{
RECT r;
if (Msg == WM_ACTIVATEAPP)
// don't care about activation/deactivation
return false;
::GetWindowRect(aWindow->mWnd, &r);
DWORD pos = ::GetMessagePos();
POINT mp;
mp.x = GET_X_LPARAM(pos);
mp.y = GET_Y_LPARAM(pos);
// was the event inside this window?
return (bool) PtInRect(&r, mp);
}
// Handle events that may cause a popup (combobox, XPMenu, etc) to need to rollup.
bool
nsWindow::DealWithPopups(HWND inWnd, UINT inMsg, WPARAM inWParam, LPARAM inLParam, LRESULT* outResult)
{
NS_ASSERTION(outResult, "Bad outResult");
*outResult = MA_NOACTIVATE;
if (!::IsWindowVisible(inWnd))
return false;
nsIRollupListener* rollupListener = nsBaseWidget::GetActiveRollupListener();
NS_ENSURE_TRUE(rollupListener, false);
nsCOMPtr<nsIWidget> rollupWidget = rollupListener->GetRollupWidget();
if (!rollupWidget)
return false;
inMsg = WinUtils::GetNativeMessage(inMsg);
if (inMsg == WM_LBUTTONDOWN || inMsg == WM_RBUTTONDOWN || inMsg == WM_MBUTTONDOWN ||
inMsg == WM_MOUSEWHEEL || inMsg == WM_MOUSEHWHEEL || inMsg == WM_ACTIVATE ||
(inMsg == WM_KILLFOCUS && IsDifferentThreadWindow((HWND)inWParam)) ||
inMsg == WM_NCRBUTTONDOWN ||
inMsg == WM_MOVING ||
inMsg == WM_SIZING ||
inMsg == WM_NCLBUTTONDOWN ||
inMsg == WM_NCMBUTTONDOWN ||
inMsg == WM_MOUSEACTIVATE ||
inMsg == WM_ACTIVATEAPP ||
inMsg == WM_MENUSELECT) {
// Rollup if the event is outside the popup.
bool rollup = !nsWindow::EventIsInsideWindow(inMsg, (nsWindow*)(rollupWidget.get()));
if (rollup && (inMsg == WM_MOUSEWHEEL || inMsg == WM_MOUSEHWHEEL)) {
rollup = rollupListener->ShouldRollupOnMouseWheelEvent();
*outResult = MA_ACTIVATE;
}
// If we're dealing with menus, we probably have submenus and we don't
// want to rollup if the click is in a parent menu of the current submenu.
uint32_t popupsToRollup = UINT32_MAX;
if (rollup) {
nsAutoTArray<nsIWidget*, 5> widgetChain;
uint32_t sameTypeCount = rollupListener->GetSubmenuWidgetChain(&widgetChain);
for ( uint32_t i = 0; i < widgetChain.Length(); ++i ) {
nsIWidget* widget = widgetChain[i];
if ( nsWindow::EventIsInsideWindow(inMsg, (nsWindow*)widget) ) {
// don't roll up if the mouse event occurred within a menu of the
// same type. If the mouse event occurred in a menu higher than
// that, roll up, but pass the number of popups to Rollup so
// that only those of the same type close up.
if (i < sameTypeCount) {
rollup = false;
} else {
popupsToRollup = sameTypeCount;
}
break;
}
} // foreach parent menu widget
}
if (inMsg == WM_MOUSEACTIVATE) {
// Prevent the click inside the popup from causing a change in window
// activation. Since the popup is shown non-activated, we need to eat
// any requests to activate the window while it is displayed. Windows
// will automatically activate the popup on the mousedown otherwise.
if (!rollup) {
return true;
} else {
UINT uMsg = HIWORD(inLParam);
if (uMsg == WM_MOUSEMOVE) {
// WM_MOUSEACTIVATE cause by moving the mouse - X-mouse (eg. TweakUI)
// must be enabled in Windows.
rollup = rollupListener->ShouldRollupOnMouseActivate();
if (!rollup) {
return true;
}
}
}
}
// if we've still determined that we should still rollup everything, do it.
else if (rollup) {
// only need to deal with the last rollup for left mouse down events.
NS_ASSERTION(!mLastRollup, "mLastRollup is null");
bool consumeRollupEvent =
rollupListener->Rollup(popupsToRollup, inMsg == WM_LBUTTONDOWN ? &mLastRollup : nullptr);
NS_IF_ADDREF(mLastRollup);
// Tell hook to stop processing messages
sProcessHook = false;
sRollupMsgId = 0;
sRollupMsgWnd = nullptr;
// return TRUE tells Windows that the event is consumed,
// false allows the event to be dispatched
//
// So if we are NOT supposed to be consuming events, let it go through
if (consumeRollupEvent && inMsg != WM_RBUTTONDOWN) {
*outResult = MA_ACTIVATE;
// However, don't activate panels
if (inMsg == WM_MOUSEACTIVATE) {
nsWindow* activateWindow = WinUtils::GetNSWindowPtr(inWnd);
if (activateWindow) {
nsWindowType wintype;
activateWindow->GetWindowType(wintype);
if (wintype == eWindowType_popup && activateWindow->PopupType() == ePopupTypePanel) {
*outResult = popupsToRollup != UINT32_MAX ? MA_NOACTIVATEANDEAT : MA_NOACTIVATE;
}
}
}
return true;
}
// if we are only rolling up some popups, don't activate and don't let
// the event go through. This prevents clicks menus higher in the
// chain from opening when a context menu is open
if (popupsToRollup != UINT32_MAX && inMsg == WM_MOUSEACTIVATE) {
*outResult = MA_NOACTIVATEANDEAT;
return true;
}
}
} // if event that might trigger a popup to rollup
return false;
}
/**************************************************************
**************************************************************
**
** BLOCK: Misc. utility methods and functions.
**
** General use.
**
**************************************************************
**************************************************************/
// Note that the result of GetTopLevelWindow method can be different from the
// result of WinUtils::GetTopLevelHWND(). The result can be non-floating
// window. Because our top level window may be contained in another window
// which is not managed by us.
nsWindow* nsWindow::GetTopLevelWindow(bool aStopOnDialogOrPopup)
{
nsWindow* curWindow = this;
while (true) {
if (aStopOnDialogOrPopup) {
switch (curWindow->mWindowType) {
case eWindowType_dialog:
case eWindowType_popup:
return curWindow;
default:
break;
}
}
// Retrieve the top level parent or owner window
nsWindow* parentWindow = curWindow->GetParentWindow(true);
if (!parentWindow)
return curWindow;
curWindow = parentWindow;
}
}
static BOOL CALLBACK gEnumWindowsProc(HWND hwnd, LPARAM lParam)
{
DWORD pid;
::GetWindowThreadProcessId(hwnd, &pid);
if (pid == GetCurrentProcessId() && ::IsWindowVisible(hwnd))
{
gWindowsVisible = true;
return FALSE;
}
return TRUE;
}
bool nsWindow::CanTakeFocus()
{
gWindowsVisible = false;
EnumWindows(gEnumWindowsProc, 0);
if (!gWindowsVisible) {
return true;
} else {
HWND fgWnd = ::GetForegroundWindow();
if (!fgWnd) {
return true;
}
DWORD pid;
GetWindowThreadProcessId(fgWnd, &pid);
if (pid == GetCurrentProcessId()) {
return true;
}
}
return false;
}
void nsWindow::GetMainWindowClass(nsAString& aClass)
{
NS_PRECONDITION(aClass.IsEmpty(), "aClass should be empty string");
nsresult rv = Preferences::GetString("ui.window_class_override", &aClass);
if (NS_FAILED(rv) || aClass.IsEmpty()) {
aClass.AssignASCII(sDefaultMainWindowClass);
}
}
LPARAM nsWindow::lParamToScreen(LPARAM lParam)
{
POINT pt;
pt.x = GET_X_LPARAM(lParam);
pt.y = GET_Y_LPARAM(lParam);
::ClientToScreen(mWnd, &pt);
return MAKELPARAM(pt.x, pt.y);
}
LPARAM nsWindow::lParamToClient(LPARAM lParam)
{
POINT pt;
pt.x = GET_X_LPARAM(lParam);
pt.y = GET_Y_LPARAM(lParam);
::ScreenToClient(mWnd, &pt);
return MAKELPARAM(pt.x, pt.y);
}
void nsWindow::PickerOpen()
{
mPickerDisplayCount++;
}
void nsWindow::PickerClosed()
{
NS_ASSERTION(mPickerDisplayCount > 0, "mPickerDisplayCount out of sync!");
if (!mPickerDisplayCount)
return;
mPickerDisplayCount--;
if (!mPickerDisplayCount && mDestroyCalled) {
Destroy();
}
}
/**************************************************************
**************************************************************
**
** BLOCK: ChildWindow impl.
**
** Child window overrides.
**
**************************************************************
**************************************************************/
// return the style for a child nsWindow
DWORD ChildWindow::WindowStyle()
{
DWORD style = WS_CLIPCHILDREN | nsWindow::WindowStyle();
if (!(style & WS_POPUP))
style |= WS_CHILD; // WS_POPUP and WS_CHILD are mutually exclusive.
VERIFY_WINDOW_STYLE(style);
return style;
}
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