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gecko/widget/xpwidgets/nsBaseWidget.cpp
Timothy Nikkel 5f02247d3d Bug 891424. Directly remove nsCocoaWindow's from their parent in Destroy(). This allows us to stop implementing GetParent because the mac widget code has some assumptions about that always returning null. r=smichaud 
This reverts implementing GetParent on nsCocoaWindow's (ie back out bug 869151) because the mac widget code has some assumptions about that. Instead we just remove nsCocoaWindow's from their mParent in Destroy() which will still keep bug 869151 fixed.
2013-07-09 22:52:19 -05:00

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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/. */
#include "mozilla/Util.h"
#include "mozilla/layers/CompositorChild.h"
#include "mozilla/layers/CompositorParent.h"
#include "mozilla/layers/ImageBridgeChild.h"
#include "nsBaseWidget.h"
#include "nsDeviceContext.h"
#include "nsCOMPtr.h"
#include "nsGfxCIID.h"
#include "nsWidgetsCID.h"
#include "nsServiceManagerUtils.h"
#include "nsIScreenManager.h"
#include "nsAppDirectoryServiceDefs.h"
#include "nsISimpleEnumerator.h"
#include "nsIContent.h"
#include "nsIServiceManager.h"
#include "mozilla/Preferences.h"
#include "BasicLayers.h"
#include "ClientLayerManager.h"
#include "LayerManagerOGL.h"
#include "mozilla/layers/Compositor.h"
#include "nsIXULRuntime.h"
#include "nsIXULWindow.h"
#include "nsIBaseWindow.h"
#include "nsXULPopupManager.h"
#include "nsEventStateManager.h"
#include "nsIWidgetListener.h"
#include "nsIGfxInfo.h"
#include "npapi.h"
#include "base/thread.h"
#include "prdtoa.h"
#include "prenv.h"
#include "mozilla/Attributes.h"
#include "nsContentUtils.h"
#include "gfxPlatform.h"
#include "mozilla/gfx/2D.h"
#ifdef ACCESSIBILITY
#include "nsAccessibilityService.h"
#endif
#ifdef DEBUG
#include "nsIObserver.h"
static void debug_RegisterPrefCallbacks();
#endif
#ifdef NOISY_WIDGET_LEAKS
static int32_t gNumWidgets;
#endif
nsIRollupListener* nsBaseWidget::gRollupListener = nullptr;
using namespace mozilla::layers;
using namespace mozilla;
using base::Thread;
using mozilla::ipc::AsyncChannel;
nsIContent* nsBaseWidget::mLastRollup = nullptr;
// Global user preference for disabling native theme. Used
// in NativeWindowTheme.
bool gDisableNativeTheme = false;
// nsBaseWidget
NS_IMPL_ISUPPORTS1(nsBaseWidget, nsIWidget)
nsAutoRollup::nsAutoRollup()
{
// remember if mLastRollup was null, and only clear it upon destruction
// if so. This prevents recursive usage of nsAutoRollup from clearing
// mLastRollup when it shouldn't.
wasClear = !nsBaseWidget::mLastRollup;
}
nsAutoRollup::~nsAutoRollup()
{
if (nsBaseWidget::mLastRollup && wasClear) {
NS_RELEASE(nsBaseWidget::mLastRollup);
}
}
//-------------------------------------------------------------------------
//
// nsBaseWidget constructor
//
//-------------------------------------------------------------------------
nsBaseWidget::nsBaseWidget()
: mWidgetListener(nullptr)
, mAttachedWidgetListener(nullptr)
, mContext(nullptr)
, mCursor(eCursor_standard)
, mWindowType(eWindowType_child)
, mBorderStyle(eBorderStyle_none)
, mUseLayersAcceleration(false)
, mForceLayersAcceleration(false)
, mTemporarilyUseBasicLayerManager(false)
, mUseAttachedEvents(false)
, mContextInitialized(false)
, mBounds(0,0,0,0)
, mOriginalBounds(nullptr)
, mClipRectCount(0)
, mZIndex(0)
, mSizeMode(nsSizeMode_Normal)
, mPopupLevel(ePopupLevelTop)
, mPopupType(ePopupTypeAny)
{
#ifdef NOISY_WIDGET_LEAKS
gNumWidgets++;
printf("WIDGETS+ = %d\n", gNumWidgets);
#endif
#ifdef DEBUG
debug_RegisterPrefCallbacks();
#endif
mShutdownObserver = new WidgetShutdownObserver(this);
nsContentUtils::RegisterShutdownObserver(mShutdownObserver);
}
NS_IMPL_ISUPPORTS1(WidgetShutdownObserver, nsIObserver)
NS_IMETHODIMP
WidgetShutdownObserver::Observe(nsISupports *aSubject,
const char *aTopic,
const PRUnichar *aData)
{
if (strcmp(aTopic, NS_XPCOM_SHUTDOWN_OBSERVER_ID) == 0 &&
mWidget) {
mWidget->Shutdown();
nsContentUtils::UnregisterShutdownObserver(this);
}
return NS_OK;
}
void
nsBaseWidget::Shutdown()
{
DestroyCompositor();
mShutdownObserver = nullptr;
}
static void DeferredDestroyCompositor(CompositorParent* aCompositorParent,
CompositorChild* aCompositorChild)
{
// Bug 848949 needs to be fixed before
// we can close the channel properly
//aCompositorChild->Close();
aCompositorParent->Release();
aCompositorChild->Release();
}
void nsBaseWidget::DestroyCompositor()
{
if (mCompositorChild) {
mCompositorChild->SendWillStop();
mCompositorChild->Destroy();
// The call just made to SendWillStop can result in IPC from the
// CompositorParent to the CompositorChild (e.g. caused by the destruction
// of shared memory). We need to ensure this gets processed by the
// CompositorChild before it gets destroyed. It suffices to ensure that
// events already in the MessageLoop get processed before the
// CompositorChild is destroyed, so we add a task to the MessageLoop to
// handle compositor desctruction.
MessageLoop::current()->PostTask(FROM_HERE,
NewRunnableFunction(DeferredDestroyCompositor, mCompositorParent,
mCompositorChild));
// The DestroyCompositor task we just added to the MessageLoop will handle
// releasing mCompositorParent and mCompositorChild.
mCompositorParent.forget();
mCompositorChild.forget();
}
}
//-------------------------------------------------------------------------
//
// nsBaseWidget destructor
//
//-------------------------------------------------------------------------
nsBaseWidget::~nsBaseWidget()
{
if (mLayerManager &&
mLayerManager->GetBackendType() == LAYERS_BASIC) {
static_cast<BasicLayerManager*>(mLayerManager.get())->ClearRetainerWidget();
}
if (mLayerManager) {
mLayerManager->Destroy();
mLayerManager = nullptr;
}
if (mShutdownObserver) {
// If the shutdown observer is currently processing observers,
// then UnregisterShutdownObserver won't stop our Observer
// function from being called. Make sure we don't try
// to reference the dead widget.
mShutdownObserver->mWidget = nullptr;
nsContentUtils::UnregisterShutdownObserver(mShutdownObserver);
}
DestroyCompositor();
#ifdef NOISY_WIDGET_LEAKS
gNumWidgets--;
printf("WIDGETS- = %d\n", gNumWidgets);
#endif
NS_IF_RELEASE(mContext);
delete mOriginalBounds;
}
//-------------------------------------------------------------------------
//
// Basic create.
//
//-------------------------------------------------------------------------
void nsBaseWidget::BaseCreate(nsIWidget *aParent,
const nsIntRect &aRect,
nsDeviceContext *aContext,
nsWidgetInitData *aInitData)
{
static bool gDisableNativeThemeCached = false;
if (!gDisableNativeThemeCached) {
Preferences::AddBoolVarCache(&gDisableNativeTheme,
"mozilla.widget.disable-native-theme",
gDisableNativeTheme);
gDisableNativeThemeCached = true;
}
// keep a reference to the device context
if (aContext) {
mContext = aContext;
NS_ADDREF(mContext);
}
else {
mContext = new nsDeviceContext();
NS_ADDREF(mContext);
mContext->Init(nullptr);
}
if (nullptr != aInitData) {
mWindowType = aInitData->mWindowType;
mBorderStyle = aInitData->mBorderStyle;
mPopupLevel = aInitData->mPopupLevel;
mPopupType = aInitData->mPopupHint;
}
if (aParent) {
aParent->AddChild(this);
}
}
NS_IMETHODIMP nsBaseWidget::CaptureMouse(bool aCapture)
{
return NS_OK;
}
//-------------------------------------------------------------------------
//
// Accessor functions to get/set the client data
//
//-------------------------------------------------------------------------
nsIWidgetListener* nsBaseWidget::GetWidgetListener()
{
return mWidgetListener;
}
void nsBaseWidget::SetWidgetListener(nsIWidgetListener* aWidgetListener)
{
mWidgetListener = aWidgetListener;
}
already_AddRefed<nsIWidget>
nsBaseWidget::CreateChild(const nsIntRect &aRect,
nsDeviceContext *aContext,
nsWidgetInitData *aInitData,
bool aForceUseIWidgetParent)
{
nsIWidget* parent = this;
nsNativeWidget nativeParent = nullptr;
if (!aForceUseIWidgetParent) {
// Use only either parent or nativeParent, not both, to match
// existing code. Eventually Create() should be divested of its
// nativeWidget parameter.
nativeParent = parent ? parent->GetNativeData(NS_NATIVE_WIDGET) : nullptr;
parent = nativeParent ? nullptr : parent;
NS_ABORT_IF_FALSE(!parent || !nativeParent, "messed up logic");
}
nsCOMPtr<nsIWidget> widget;
if (aInitData && aInitData->mWindowType == eWindowType_popup) {
widget = AllocateChildPopupWidget();
} else {
static NS_DEFINE_IID(kCChildCID, NS_CHILD_CID);
widget = do_CreateInstance(kCChildCID);
}
if (widget &&
NS_SUCCEEDED(widget->Create(parent, nativeParent, aRect,
aContext, aInitData))) {
return widget.forget();
}
return nullptr;
}
// Attach a view to our widget which we'll send events to.
NS_IMETHODIMP
nsBaseWidget::AttachViewToTopLevel(bool aUseAttachedEvents,
nsDeviceContext *aContext)
{
NS_ASSERTION((mWindowType == eWindowType_toplevel ||
mWindowType == eWindowType_dialog ||
mWindowType == eWindowType_invisible ||
mWindowType == eWindowType_child),
"Can't attach to window of that type");
mUseAttachedEvents = aUseAttachedEvents;
if (aContext) {
if (mContext) {
NS_IF_RELEASE(mContext);
}
mContext = aContext;
NS_ADDREF(mContext);
}
return NS_OK;
}
nsIWidgetListener* nsBaseWidget::GetAttachedWidgetListener()
{
return mAttachedWidgetListener;
}
void nsBaseWidget::SetAttachedWidgetListener(nsIWidgetListener* aListener)
{
mAttachedWidgetListener = aListener;
}
//-------------------------------------------------------------------------
//
// Close this nsBaseWidget
//
//-------------------------------------------------------------------------
NS_METHOD nsBaseWidget::Destroy()
{
// Just in case our parent is the only ref to us
nsCOMPtr<nsIWidget> kungFuDeathGrip(this);
// disconnect from the parent
nsIWidget *parent = GetParent();
if (parent) {
parent->RemoveChild(this);
}
return NS_OK;
}
//-------------------------------------------------------------------------
//
// Set this nsBaseWidget's parent
//
//-------------------------------------------------------------------------
NS_IMETHODIMP nsBaseWidget::SetParent(nsIWidget* aNewParent)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
//-------------------------------------------------------------------------
//
// Get this nsBaseWidget parent
//
//-------------------------------------------------------------------------
nsIWidget* nsBaseWidget::GetParent(void)
{
return nullptr;
}
//-------------------------------------------------------------------------
//
// Get this nsBaseWidget top level widget
//
//-------------------------------------------------------------------------
nsIWidget* nsBaseWidget::GetTopLevelWidget()
{
nsIWidget *topLevelWidget = nullptr, *widget = this;
while (widget) {
topLevelWidget = widget;
widget = widget->GetParent();
}
return topLevelWidget;
}
//-------------------------------------------------------------------------
//
// Get this nsBaseWidget's top (non-sheet) parent (if it's a sheet)
//
//-------------------------------------------------------------------------
nsIWidget* nsBaseWidget::GetSheetWindowParent(void)
{
return nullptr;
}
float nsBaseWidget::GetDPI()
{
return 96.0f;
}
double nsIWidget::GetDefaultScale()
{
double devPixelsPerCSSPixel = DefaultScaleOverride();
if (devPixelsPerCSSPixel <= 0.0) {
devPixelsPerCSSPixel = GetDefaultScaleInternal();
}
return devPixelsPerCSSPixel;
}
/* static */
double nsIWidget::DefaultScaleOverride()
{
// The number of device pixels per CSS pixel. A value <= 0 means choose
// automatically based on the DPI. A positive value is used as-is. This effectively
// controls the size of a CSS "px".
double devPixelsPerCSSPixel = -1.0;
nsAdoptingCString prefString = Preferences::GetCString("layout.css.devPixelsPerPx");
if (!prefString.IsEmpty()) {
devPixelsPerCSSPixel = PR_strtod(prefString, nullptr);
}
return devPixelsPerCSSPixel;
}
//-------------------------------------------------------------------------
//
// Add a child to the list of children
//
//-------------------------------------------------------------------------
void nsBaseWidget::AddChild(nsIWidget* aChild)
{
NS_PRECONDITION(!aChild->GetNextSibling() && !aChild->GetPrevSibling(),
"aChild not properly removed from its old child list");
if (!mFirstChild) {
mFirstChild = mLastChild = aChild;
} else {
// append to the list
NS_ASSERTION(mLastChild, "Bogus state");
NS_ASSERTION(!mLastChild->GetNextSibling(), "Bogus state");
mLastChild->SetNextSibling(aChild);
aChild->SetPrevSibling(mLastChild);
mLastChild = aChild;
}
}
//-------------------------------------------------------------------------
//
// Remove a child from the list of children
//
//-------------------------------------------------------------------------
void nsBaseWidget::RemoveChild(nsIWidget* aChild)
{
#ifdef DEBUG
#ifdef XP_MACOSX
// nsCocoaWindow doesn't implement GetParent, so in that case parent will be
// null and we'll just have to do without this assertion.
nsIWidget* parent = aChild->GetParent();
NS_ASSERTION(!parent || parent == this, "Not one of our kids!");
#else
NS_ASSERTION(aChild->GetParent() == this, "Not one of our kids!");
#endif
#endif
if (mLastChild == aChild) {
mLastChild = mLastChild->GetPrevSibling();
}
if (mFirstChild == aChild) {
mFirstChild = mFirstChild->GetNextSibling();
}
// Now remove from the list. Make sure that we pass ownership of the tail
// of the list correctly before we have aChild let go of it.
nsIWidget* prev = aChild->GetPrevSibling();
nsIWidget* next = aChild->GetNextSibling();
if (prev) {
prev->SetNextSibling(next);
}
if (next) {
next->SetPrevSibling(prev);
}
aChild->SetNextSibling(nullptr);
aChild->SetPrevSibling(nullptr);
}
//-------------------------------------------------------------------------
//
// Sets widget's position within its parent's child list.
//
//-------------------------------------------------------------------------
NS_IMETHODIMP nsBaseWidget::SetZIndex(int32_t aZIndex)
{
// Hold a ref to ourselves just in case, since we're going to remove
// from our parent.
nsCOMPtr<nsIWidget> kungFuDeathGrip(this);
mZIndex = aZIndex;
// reorder this child in its parent's list.
nsBaseWidget* parent = static_cast<nsBaseWidget*>(GetParent());
if (parent) {
parent->RemoveChild(this);
// Scope sib outside the for loop so we can check it afterward
nsIWidget* sib = parent->GetFirstChild();
for ( ; sib; sib = sib->GetNextSibling()) {
int32_t childZIndex;
if (NS_SUCCEEDED(sib->GetZIndex(&childZIndex))) {
if (aZIndex < childZIndex) {
// Insert ourselves before sib
nsIWidget* prev = sib->GetPrevSibling();
mNextSibling = sib;
mPrevSibling = prev;
sib->SetPrevSibling(this);
if (prev) {
prev->SetNextSibling(this);
} else {
NS_ASSERTION(sib == parent->mFirstChild, "Broken child list");
// We've taken ownership of sib, so it's safe to have parent let
// go of it
parent->mFirstChild = this;
}
PlaceBehind(eZPlacementBelow, sib, false);
break;
}
}
}
// were we added to the list?
if (!sib) {
parent->AddChild(this);
}
}
return NS_OK;
}
//-------------------------------------------------------------------------
//
// Gets widget's position within its parent's child list.
//
//-------------------------------------------------------------------------
NS_IMETHODIMP nsBaseWidget::GetZIndex(int32_t* aZIndex)
{
*aZIndex = mZIndex;
return NS_OK;
}
//-------------------------------------------------------------------------
//
// Places widget behind the given widget (platforms must override)
//
//-------------------------------------------------------------------------
NS_IMETHODIMP nsBaseWidget::PlaceBehind(nsTopLevelWidgetZPlacement aPlacement,
nsIWidget *aWidget, bool aActivate)
{
return NS_OK;
}
//-------------------------------------------------------------------------
//
// Maximize, minimize or restore the window. The BaseWidget implementation
// merely stores the state.
//
//-------------------------------------------------------------------------
NS_IMETHODIMP nsBaseWidget::SetSizeMode(int32_t aMode)
{
if (aMode == nsSizeMode_Normal ||
aMode == nsSizeMode_Minimized ||
aMode == nsSizeMode_Maximized ||
aMode == nsSizeMode_Fullscreen) {
mSizeMode = (nsSizeMode) aMode;
return NS_OK;
}
return NS_ERROR_ILLEGAL_VALUE;
}
//-------------------------------------------------------------------------
//
// Get the foreground color
//
//-------------------------------------------------------------------------
nscolor nsBaseWidget::GetForegroundColor(void)
{
return mForeground;
}
//-------------------------------------------------------------------------
//
// Set the foreground color
//
//-------------------------------------------------------------------------
NS_METHOD nsBaseWidget::SetForegroundColor(const nscolor &aColor)
{
mForeground = aColor;
return NS_OK;
}
//-------------------------------------------------------------------------
//
// Get the background color
//
//-------------------------------------------------------------------------
nscolor nsBaseWidget::GetBackgroundColor(void)
{
return mBackground;
}
//-------------------------------------------------------------------------
//
// Set the background color
//
//-------------------------------------------------------------------------
NS_METHOD nsBaseWidget::SetBackgroundColor(const nscolor &aColor)
{
mBackground = aColor;
return NS_OK;
}
//-------------------------------------------------------------------------
//
// Get this component cursor
//
//-------------------------------------------------------------------------
nsCursor nsBaseWidget::GetCursor()
{
return mCursor;
}
NS_METHOD nsBaseWidget::SetCursor(nsCursor aCursor)
{
mCursor = aCursor;
return NS_OK;
}
NS_IMETHODIMP nsBaseWidget::SetCursor(imgIContainer* aCursor,
uint32_t aHotspotX, uint32_t aHotspotY)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
//-------------------------------------------------------------------------
//
// Get the window type for this widget
//
//-------------------------------------------------------------------------
NS_IMETHODIMP nsBaseWidget::GetWindowType(nsWindowType& aWindowType)
{
aWindowType = mWindowType;
return NS_OK;
}
//-------------------------------------------------------------------------
//
// Window transparency methods
//
//-------------------------------------------------------------------------
void nsBaseWidget::SetTransparencyMode(nsTransparencyMode aMode) {
}
nsTransparencyMode nsBaseWidget::GetTransparencyMode() {
return eTransparencyOpaque;
}
bool
nsBaseWidget::StoreWindowClipRegion(const nsTArray<nsIntRect>& aRects)
{
if (mClipRects && mClipRectCount == aRects.Length() &&
memcmp(mClipRects, aRects.Elements(), sizeof(nsIntRect)*mClipRectCount) == 0)
return false;
mClipRectCount = aRects.Length();
mClipRects = new nsIntRect[mClipRectCount];
if (mClipRects) {
memcpy(mClipRects, aRects.Elements(), sizeof(nsIntRect)*mClipRectCount);
}
return true;
}
void
nsBaseWidget::GetWindowClipRegion(nsTArray<nsIntRect>* aRects)
{
if (mClipRects) {
aRects->AppendElements(mClipRects.get(), mClipRectCount);
} else {
aRects->AppendElement(nsIntRect(0, 0, mBounds.width, mBounds.height));
}
}
//-------------------------------------------------------------------------
//
// Set window shadow style
//
//-------------------------------------------------------------------------
NS_IMETHODIMP nsBaseWidget::SetWindowShadowStyle(int32_t aMode)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
//-------------------------------------------------------------------------
//
// Hide window borders/decorations for this widget
//
//-------------------------------------------------------------------------
NS_IMETHODIMP nsBaseWidget::HideWindowChrome(bool aShouldHide)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
//-------------------------------------------------------------------------
//
// Put the window into full-screen mode
//
//-------------------------------------------------------------------------
NS_IMETHODIMP nsBaseWidget::MakeFullScreen(bool aFullScreen)
{
HideWindowChrome(aFullScreen);
if (aFullScreen) {
if (!mOriginalBounds)
mOriginalBounds = new nsIntRect();
GetScreenBounds(*mOriginalBounds);
// convert dev pix to display pix for window manipulation
double scale = GetDefaultScale();
mOriginalBounds->x = NSToIntRound(mOriginalBounds->x / scale);
mOriginalBounds->y = NSToIntRound(mOriginalBounds->y / scale);
mOriginalBounds->width = NSToIntRound(mOriginalBounds->width / scale);
mOriginalBounds->height = NSToIntRound(mOriginalBounds->height / scale);
// Move to top-left corner of screen and size to the screen dimensions
nsCOMPtr<nsIScreenManager> screenManager;
screenManager = do_GetService("@mozilla.org/gfx/screenmanager;1");
NS_ASSERTION(screenManager, "Unable to grab screenManager.");
if (screenManager) {
nsCOMPtr<nsIScreen> screen;
screenManager->ScreenForRect(mOriginalBounds->x,
mOriginalBounds->y,
mOriginalBounds->width,
mOriginalBounds->height,
getter_AddRefs(screen));
if (screen) {
int32_t left, top, width, height;
if (NS_SUCCEEDED(screen->GetRectDisplayPix(&left, &top, &width, &height))) {
Resize(left, top, width, height, true);
}
}
}
} else if (mOriginalBounds) {
Resize(mOriginalBounds->x, mOriginalBounds->y, mOriginalBounds->width,
mOriginalBounds->height, true);
}
return NS_OK;
}
nsBaseWidget::AutoLayerManagerSetup::AutoLayerManagerSetup(
nsBaseWidget* aWidget, gfxContext* aTarget,
BufferMode aDoubleBuffering, ScreenRotation aRotation)
: mWidget(aWidget)
{
mLayerManager = static_cast<BasicLayerManager*>(mWidget->GetLayerManager());
if (mLayerManager) {
NS_ASSERTION(mLayerManager->GetBackendType() == LAYERS_BASIC,
"AutoLayerManagerSetup instantiated for non-basic layer backend!");
mLayerManager->SetDefaultTarget(aTarget);
mLayerManager->SetDefaultTargetConfiguration(aDoubleBuffering, aRotation);
}
}
nsBaseWidget::AutoLayerManagerSetup::~AutoLayerManagerSetup()
{
if (mLayerManager) {
NS_ASSERTION(mLayerManager->GetBackendType() == LAYERS_BASIC,
"AutoLayerManagerSetup instantiated for non-basic layer backend!");
mLayerManager->SetDefaultTarget(nullptr);
mLayerManager->SetDefaultTargetConfiguration(mozilla::layers::BUFFER_NONE, ROTATION_0);
}
}
nsBaseWidget::AutoUseBasicLayerManager::AutoUseBasicLayerManager(nsBaseWidget* aWidget)
: mWidget(aWidget)
{
mPreviousTemporarilyUseBasicLayerManager =
mWidget->mTemporarilyUseBasicLayerManager;
mWidget->mTemporarilyUseBasicLayerManager = true;
}
nsBaseWidget::AutoUseBasicLayerManager::~AutoUseBasicLayerManager()
{
mWidget->mTemporarilyUseBasicLayerManager =
mPreviousTemporarilyUseBasicLayerManager;
}
bool
nsBaseWidget::ComputeShouldAccelerate(bool aDefault)
{
#if defined(XP_WIN) || defined(ANDROID) || (MOZ_PLATFORM_MAEMO > 5) || \
defined(MOZ_GL_PROVIDER) || defined(XP_MACOSX)
bool accelerateByDefault = true;
#else
bool accelerateByDefault = false;
#endif
#ifdef XP_MACOSX
// 10.6.2 and lower have a bug involving textures and pixel buffer objects
// that caused bug 629016, so we don't allow OpenGL-accelerated layers on
// those versions of the OS.
// This will still let full-screen video be accelerated on OpenGL, because
// that XUL widget opts in to acceleration, but that's probably OK.
SInt32 major, minor, bugfix;
OSErr err1 = ::Gestalt(gestaltSystemVersionMajor, &major);
OSErr err2 = ::Gestalt(gestaltSystemVersionMinor, &minor);
OSErr err3 = ::Gestalt(gestaltSystemVersionBugFix, &bugfix);
if (err1 == noErr && err2 == noErr && err3 == noErr) {
if (major == 10 && minor == 6) {
if (bugfix <= 2) {
accelerateByDefault = false;
}
}
}
#endif
// We don't want to accelerate small popup windows like menu, but we still
// want to accelerate xul panels that may contain arbitrarily complex content.
bool isSmallPopup = ((mWindowType == eWindowType_popup) &&
(mPopupType != ePopupTypePanel));
// we should use AddBoolPrefVarCache
bool disableAcceleration = isSmallPopup || gfxPlatform::GetPrefLayersAccelerationDisabled() || (mWindowType == eWindowType_invisible);
mForceLayersAcceleration = gfxPlatform::GetPrefLayersAccelerationForceEnabled();
const char *acceleratedEnv = PR_GetEnv("MOZ_ACCELERATED");
accelerateByDefault = accelerateByDefault ||
(acceleratedEnv && (*acceleratedEnv != '0'));
nsCOMPtr<nsIXULRuntime> xr = do_GetService("@mozilla.org/xre/runtime;1");
bool safeMode = false;
if (xr)
xr->GetInSafeMode(&safeMode);
bool whitelisted = false;
nsCOMPtr<nsIGfxInfo> gfxInfo = do_GetService("@mozilla.org/gfx/info;1");
if (gfxInfo) {
// bug 655578: on X11 at least, we must always call GetData (even if we don't need that information)
// as that's what causes GfxInfo initialization which kills the zombie 'glxtest' process.
// initially we relied on the fact that GetFeatureStatus calls GetData for us, but bug 681026 showed
// that assumption to be unsafe.
gfxInfo->GetData();
int32_t status;
if (NS_SUCCEEDED(gfxInfo->GetFeatureStatus(nsIGfxInfo::FEATURE_OPENGL_LAYERS, &status))) {
if (status == nsIGfxInfo::FEATURE_NO_INFO) {
whitelisted = true;
}
}
}
if (disableAcceleration || safeMode)
return false;
if (mForceLayersAcceleration)
return true;
if (!whitelisted) {
NS_WARNING("OpenGL-accelerated layers are not supported on this system");
#ifdef MOZ_ANDROID_OMTC
NS_RUNTIMEABORT("OpenGL-accelerated layers are a hard requirement on this platform. "
"Cannot continue without support for them");
#endif
return false;
}
if (accelerateByDefault)
return true;
/* use the window acceleration flag */
return aDefault;
}
CompositorParent* nsBaseWidget::NewCompositorParent(int aSurfaceWidth,
int aSurfaceHeight)
{
return new CompositorParent(this, false, aSurfaceWidth, aSurfaceHeight);
}
void nsBaseWidget::CreateCompositor()
{
nsIntRect rect;
GetBounds(rect);
CreateCompositor(rect.width, rect.height);
}
mozilla::layers::LayersBackend
nsBaseWidget::GetPreferredCompositorBackend()
{
if (mUseLayersAcceleration) {
return mozilla::layers::LAYERS_OPENGL;
}
return mozilla::layers::LAYERS_BASIC;
}
void nsBaseWidget::CreateCompositor(int aWidth, int aHeight)
{
// Recreating this is tricky, as we may still have an old and we need
// to make sure it's properly destroyed by calling DestroyCompositor!
// If we've already received a shutdown notification, don't try
// create a new compositor.
if (!mShutdownObserver) {
return;
}
mCompositorParent = NewCompositorParent(aWidth, aHeight);
AsyncChannel *parentChannel = mCompositorParent->GetIPCChannel();
LayerManager* lm = new ClientLayerManager(this);
MessageLoop *childMessageLoop = CompositorParent::CompositorLoop();
mCompositorChild = new CompositorChild(lm);
AsyncChannel::Side childSide = mozilla::ipc::AsyncChannel::Child;
mCompositorChild->Open(parentChannel, childMessageLoop, childSide);
TextureFactoryIdentifier textureFactoryIdentifier;
PLayerTransactionChild* shadowManager;
mozilla::layers::LayersBackend backendHint = GetPreferredCompositorBackend();
shadowManager = mCompositorChild->SendPLayerTransactionConstructor(
backendHint, 0, &textureFactoryIdentifier);
if (shadowManager) {
ShadowLayerForwarder* lf = lm->AsShadowForwarder();
if (!lf) {
delete lm;
mCompositorChild = nullptr;
return;
}
lf->SetShadowManager(shadowManager);
lf->IdentifyTextureHost(textureFactoryIdentifier);
ImageBridgeChild::IdentifyCompositorTextureHost(textureFactoryIdentifier);
mLayerManager = lm;
return;
}
// Failed to create a compositor!
NS_WARNING("Failed to create an OMT compositor.");
DestroyCompositor();
// Compositor child had the only reference to LayerManager and will have
// deallocated it when being freed.
}
bool nsBaseWidget::ShouldUseOffMainThreadCompositing()
{
bool isSmallPopup = ((mWindowType == eWindowType_popup) &&
(mPopupType != ePopupTypePanel)) || (mWindowType == eWindowType_invisible);
return CompositorParent::CompositorLoop() && !isSmallPopup;
}
LayerManager* nsBaseWidget::GetLayerManager(PLayerTransactionChild* aShadowManager,
LayersBackend aBackendHint,
LayerManagerPersistence aPersistence,
bool* aAllowRetaining)
{
if (!mLayerManager) {
mUseLayersAcceleration = ComputeShouldAccelerate(mUseLayersAcceleration);
// 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 (mUseLayersAcceleration) {
if (!mLayerManager) {
nsRefPtr<LayerManagerOGL> layerManager = new LayerManagerOGL(this);
/**
* XXX - On several OSes initialization is expected to fail for now.
* If we'd get a non-basic layer manager they'd crash. This is ok though
* since on those platforms it will fail. Anyone implementing new
* platforms on LayerManagerOGL should ensure their widget is able to
* deal with it though!
*/
if (layerManager->Initialize(mForceLayersAcceleration)) {
mLayerManager = layerManager;
}
}
}
if (!mLayerManager) {
mLayerManager = CreateBasicLayerManager();
}
}
if (mTemporarilyUseBasicLayerManager && !mBasicLayerManager) {
mBasicLayerManager = CreateBasicLayerManager();
}
LayerManager* usedLayerManager = mTemporarilyUseBasicLayerManager ?
mBasicLayerManager : mLayerManager;
if (aAllowRetaining) {
*aAllowRetaining = (usedLayerManager == mLayerManager);
}
return usedLayerManager;
}
BasicLayerManager* nsBaseWidget::CreateBasicLayerManager()
{
return new BasicLayerManager(this);
}
CompositorChild* nsBaseWidget::GetRemoteRenderer()
{
return mCompositorChild;
}
TemporaryRef<mozilla::gfx::DrawTarget> nsBaseWidget::StartRemoteDrawing()
{
return nullptr;
}
//-------------------------------------------------------------------------
//
// Return the used device context
//
//-------------------------------------------------------------------------
nsDeviceContext* nsBaseWidget::GetDeviceContext()
{
if (!mContextInitialized) {
mContext->Init(this);
mContextInitialized = true;
}
return mContext;
}
//-------------------------------------------------------------------------
//
// Get the thebes surface
//
//-------------------------------------------------------------------------
gfxASurface *nsBaseWidget::GetThebesSurface()
{
// in theory we should get our parent's surface,
// clone it, and set a device offset before returning
return nullptr;
}
//-------------------------------------------------------------------------
//
// Destroy the window
//
//-------------------------------------------------------------------------
void nsBaseWidget::OnDestroy()
{
// release references to device context and app shell
NS_IF_RELEASE(mContext);
}
NS_METHOD nsBaseWidget::SetWindowClass(const nsAString& xulWinType)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_METHOD nsBaseWidget::MoveClient(double aX, double aY)
{
nsIntPoint clientOffset(GetClientOffset());
// GetClientOffset returns device pixels; scale back to display pixels
// if that's what this widget uses for the Move/Resize APIs
double scale = BoundsUseDisplayPixels() ? 1.0 / GetDefaultScale() : 1.0;
aX -= clientOffset.x * scale;
aY -= clientOffset.y * scale;
return Move(aX, aY);
}
NS_METHOD nsBaseWidget::ResizeClient(double aWidth,
double aHeight,
bool aRepaint)
{
NS_ASSERTION((aWidth >=0) , "Negative width passed to ResizeClient");
NS_ASSERTION((aHeight >=0), "Negative height passed to ResizeClient");
nsIntRect clientBounds;
GetClientBounds(clientBounds);
// GetClientBounds and mBounds are device pixels; scale back to display pixels
// if that's what this widget uses for the Move/Resize APIs
double scale = BoundsUseDisplayPixels() ? 1.0 / GetDefaultScale() : 1.0;
aWidth = mBounds.width * scale + (aWidth - clientBounds.width * scale);
aHeight = mBounds.height * scale + (aHeight - clientBounds.height * scale);
return Resize(aWidth, aHeight, aRepaint);
}
NS_METHOD nsBaseWidget::ResizeClient(double aX,
double aY,
double aWidth,
double aHeight,
bool aRepaint)
{
NS_ASSERTION((aWidth >=0) , "Negative width passed to ResizeClient");
NS_ASSERTION((aHeight >=0), "Negative height passed to ResizeClient");
nsIntRect clientBounds;
GetClientBounds(clientBounds);
double scale = BoundsUseDisplayPixels() ? 1.0 / GetDefaultScale() : 1.0;
aWidth = mBounds.width * scale + (aWidth - clientBounds.width * scale);
aHeight = mBounds.height * scale + (aHeight - clientBounds.height * scale);
nsIntPoint clientOffset(GetClientOffset());
aX -= clientOffset.x * scale;
aY -= clientOffset.y * scale;
return Resize(aX, aY, aWidth, aHeight, aRepaint);
}
//-------------------------------------------------------------------------
//
// Bounds
//
//-------------------------------------------------------------------------
/**
* If the implementation of nsWindow supports borders this method MUST be overridden
*
**/
NS_METHOD nsBaseWidget::GetClientBounds(nsIntRect &aRect)
{
return GetBounds(aRect);
}
/**
* If the implementation of nsWindow supports borders this method MUST be overridden
*
**/
NS_METHOD nsBaseWidget::GetBounds(nsIntRect &aRect)
{
aRect = mBounds;
return NS_OK;
}
/**
* If the implementation of nsWindow uses a local coordinate system within the window,
* this method must be overridden
*
**/
NS_METHOD nsBaseWidget::GetScreenBounds(nsIntRect &aRect)
{
return GetBounds(aRect);
}
nsIntPoint nsBaseWidget::GetClientOffset()
{
return nsIntPoint(0, 0);
}
NS_IMETHODIMP
nsBaseWidget::GetNonClientMargins(nsIntMargin &margins)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsBaseWidget::SetNonClientMargins(nsIntMargin &margins)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_METHOD nsBaseWidget::EnableDragDrop(bool aEnable)
{
return NS_OK;
}
NS_METHOD nsBaseWidget::SetModal(bool aModal)
{
return NS_ERROR_FAILURE;
}
NS_IMETHODIMP
nsBaseWidget::GetAttention(int32_t aCycleCount) {
return NS_OK;
}
bool
nsBaseWidget::HasPendingInputEvent()
{
return false;
}
NS_IMETHODIMP
nsBaseWidget::SetIcon(const nsAString&)
{
return NS_OK;
}
NS_IMETHODIMP
nsBaseWidget::SetWindowTitlebarColor(nscolor aColor, bool aActive)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
bool
nsBaseWidget::ShowsResizeIndicator(nsIntRect* aResizerRect)
{
return false;
}
NS_IMETHODIMP
nsBaseWidget::SetLayersAcceleration(bool aEnabled)
{
if (mUseLayersAcceleration == aEnabled) {
return NS_OK;
}
bool usedAcceleration = mUseLayersAcceleration;
mUseLayersAcceleration = ComputeShouldAccelerate(aEnabled);
// ComputeShouldAccelerate may have set mUseLayersAcceleration to a value
// different from aEnabled.
if (usedAcceleration == mUseLayersAcceleration) {
return NS_OK;
}
if (mLayerManager) {
mLayerManager->Destroy();
}
mLayerManager = nullptr;
return NS_OK;
}
NS_METHOD nsBaseWidget::RegisterTouchWindow()
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_METHOD nsBaseWidget::UnregisterTouchWindow()
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsBaseWidget::OverrideSystemMouseScrollSpeed(double aOriginalDeltaX,
double aOriginalDeltaY,
double& aOverriddenDeltaX,
double& aOverriddenDeltaY)
{
aOverriddenDeltaX = aOriginalDeltaX;
aOverriddenDeltaY = aOriginalDeltaY;
static bool sInitialized = false;
static bool sIsOverrideEnabled = false;
static int32_t sIntFactorX = 0;
static int32_t sIntFactorY = 0;
if (!sInitialized) {
Preferences::AddBoolVarCache(&sIsOverrideEnabled,
"mousewheel.system_scroll_override_on_root_content.enabled", false);
Preferences::AddIntVarCache(&sIntFactorX,
"mousewheel.system_scroll_override_on_root_content.horizontal.factor", 0);
Preferences::AddIntVarCache(&sIntFactorY,
"mousewheel.system_scroll_override_on_root_content.vertical.factor", 0);
sIntFactorX = std::max(sIntFactorX, 0);
sIntFactorY = std::max(sIntFactorY, 0);
sInitialized = true;
}
if (!sIsOverrideEnabled) {
return NS_OK;
}
// The pref value must be larger than 100, otherwise, we don't override the
// delta value.
if (sIntFactorX > 100) {
double factor = static_cast<double>(sIntFactorX) / 100;
aOverriddenDeltaX *= factor;
}
if (sIntFactorY > 100) {
double factor = static_cast<double>(sIntFactorY) / 100;
aOverriddenDeltaY *= factor;
}
return NS_OK;
}
/**
* Modifies aFile to point at an icon file with the given name and suffix. The
* suffix may correspond to a file extension with leading '.' if appropriate.
* Returns true if the icon file exists and can be read.
*/
static bool
ResolveIconNameHelper(nsIFile *aFile,
const nsAString &aIconName,
const nsAString &aIconSuffix)
{
aFile->Append(NS_LITERAL_STRING("icons"));
aFile->Append(NS_LITERAL_STRING("default"));
aFile->Append(aIconName + aIconSuffix);
bool readable;
return NS_SUCCEEDED(aFile->IsReadable(&readable)) && readable;
}
/**
* Resolve the given icon name into a local file object. This method is
* intended to be called by subclasses of nsBaseWidget. aIconSuffix is a
* platform specific icon file suffix (e.g., ".ico" under Win32).
*
* If no file is found matching the given parameters, then null is returned.
*/
void
nsBaseWidget::ResolveIconName(const nsAString &aIconName,
const nsAString &aIconSuffix,
nsIFile **aResult)
{
*aResult = nullptr;
nsCOMPtr<nsIProperties> dirSvc = do_GetService(NS_DIRECTORY_SERVICE_CONTRACTID);
if (!dirSvc)
return;
// first check auxilary chrome directories
nsCOMPtr<nsISimpleEnumerator> dirs;
dirSvc->Get(NS_APP_CHROME_DIR_LIST, NS_GET_IID(nsISimpleEnumerator),
getter_AddRefs(dirs));
if (dirs) {
bool hasMore;
while (NS_SUCCEEDED(dirs->HasMoreElements(&hasMore)) && hasMore) {
nsCOMPtr<nsISupports> element;
dirs->GetNext(getter_AddRefs(element));
if (!element)
continue;
nsCOMPtr<nsIFile> file = do_QueryInterface(element);
if (!file)
continue;
if (ResolveIconNameHelper(file, aIconName, aIconSuffix)) {
NS_ADDREF(*aResult = file);
return;
}
}
}
// then check the main app chrome directory
nsCOMPtr<nsIFile> file;
dirSvc->Get(NS_APP_CHROME_DIR, NS_GET_IID(nsIFile),
getter_AddRefs(file));
if (file && ResolveIconNameHelper(file, aIconName, aIconSuffix))
NS_ADDREF(*aResult = file);
}
NS_IMETHODIMP
nsBaseWidget::BeginResizeDrag(nsGUIEvent* aEvent, int32_t aHorizontal, int32_t aVertical)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsBaseWidget::BeginMoveDrag(nsMouseEvent* aEvent)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
uint32_t
nsBaseWidget::GetGLFrameBufferFormat()
{
if (mLayerManager &&
mLayerManager->GetBackendType() == LAYERS_OPENGL) {
// Assume that the default framebuffer has RGBA format. Specific
// backends that know differently will override this method.
return LOCAL_GL_RGBA;
}
return LOCAL_GL_NONE;
}
void nsBaseWidget::SetSizeConstraints(const SizeConstraints& aConstraints)
{
mSizeConstraints = aConstraints;
// We can't ensure that the size is honored at this point because we're
// probably in the middle of a reflow.
}
const widget::SizeConstraints& nsBaseWidget::GetSizeConstraints() const
{
return mSizeConstraints;
}
// static
nsIRollupListener*
nsBaseWidget::GetActiveRollupListener()
{
// If set, then this is likely an <html:select> dropdown.
if (gRollupListener)
return gRollupListener;
return nsXULPopupManager::GetInstance();
}
void
nsBaseWidget::NotifyWindowDestroyed()
{
if (!mWidgetListener)
return;
nsCOMPtr<nsIXULWindow> window = mWidgetListener->GetXULWindow();
nsCOMPtr<nsIBaseWindow> xulWindow(do_QueryInterface(window));
if (xulWindow) {
xulWindow->Destroy();
}
}
void
nsBaseWidget::NotifySizeMoveDone()
{
if (!mWidgetListener || mWidgetListener->GetXULWindow())
return;
nsIPresShell* presShell = mWidgetListener->GetPresShell();
if (presShell) {
presShell->WindowSizeMoveDone();
}
}
void
nsBaseWidget::NotifySysColorChanged()
{
if (!mWidgetListener || mWidgetListener->GetXULWindow())
return;
nsIPresShell* presShell = mWidgetListener->GetPresShell();
if (presShell) {
presShell->SysColorChanged();
}
}
void
nsBaseWidget::NotifyThemeChanged()
{
if (!mWidgetListener || mWidgetListener->GetXULWindow())
return;
nsIPresShell* presShell = mWidgetListener->GetPresShell();
if (presShell) {
presShell->ThemeChanged();
}
}
void
nsBaseWidget::NotifyUIStateChanged(UIStateChangeType aShowAccelerators,
UIStateChangeType aShowFocusRings)
{
if (!mWidgetListener)
return;
nsIPresShell* presShell = mWidgetListener->GetPresShell();
if (!presShell)
return;
nsIDocument* doc = presShell->GetDocument();
if (doc) {
nsPIDOMWindow* win = doc->GetWindow();
if (win) {
win->SetKeyboardIndicators(aShowAccelerators, aShowFocusRings);
}
}
}
#ifdef ACCESSIBILITY
a11y::Accessible*
nsBaseWidget::GetRootAccessible()
{
NS_ENSURE_TRUE(mWidgetListener, nullptr);
nsIPresShell* presShell = mWidgetListener->GetPresShell();
NS_ENSURE_TRUE(presShell, nullptr);
// If container is null then the presshell is not active. This often happens
// when a preshell is being held onto for fastback.
nsPresContext* presContext = presShell->GetPresContext();
nsCOMPtr<nsISupports> container = presContext->GetContainer();
NS_ENSURE_TRUE(container, nullptr);
// Accessible creation might be not safe so use IsSafeToRunScript to
// make sure it's not created at unsafe times.
nsCOMPtr<nsIAccessibilityService> accService =
services::GetAccessibilityService();
if (accService) {
return accService->GetRootDocumentAccessible(presShell, nsContentUtils::IsSafeToRunScript());
}
return nullptr;
}
#endif
#ifdef DEBUG
//////////////////////////////////////////////////////////////
//
// Convert a GUI event message code to a string.
// Makes it a lot easier to debug events.
//
// See gtk/nsWidget.cpp and windows/nsWindow.cpp
// for a DebugPrintEvent() function that uses
// this.
//
//////////////////////////////////////////////////////////////
/* static */ nsAutoString
nsBaseWidget::debug_GuiEventToString(nsGUIEvent * aGuiEvent)
{
NS_ASSERTION(nullptr != aGuiEvent,"cmon, null gui event.");
nsAutoString eventName(NS_LITERAL_STRING("UNKNOWN"));
#define _ASSIGN_eventName(_value,_name)\
case _value: eventName.AssignLiteral(_name) ; break
switch(aGuiEvent->message)
{
_ASSIGN_eventName(NS_BLUR_CONTENT,"NS_BLUR_CONTENT");
_ASSIGN_eventName(NS_DRAGDROP_GESTURE,"NS_DND_GESTURE");
_ASSIGN_eventName(NS_DRAGDROP_DROP,"NS_DND_DROP");
_ASSIGN_eventName(NS_DRAGDROP_ENTER,"NS_DND_ENTER");
_ASSIGN_eventName(NS_DRAGDROP_EXIT,"NS_DND_EXIT");
_ASSIGN_eventName(NS_DRAGDROP_OVER,"NS_DND_OVER");
_ASSIGN_eventName(NS_FOCUS_CONTENT,"NS_FOCUS_CONTENT");
_ASSIGN_eventName(NS_FORM_SELECTED,"NS_FORM_SELECTED");
_ASSIGN_eventName(NS_FORM_CHANGE,"NS_FORM_CHANGE");
_ASSIGN_eventName(NS_FORM_INPUT,"NS_FORM_INPUT");
_ASSIGN_eventName(NS_FORM_RESET,"NS_FORM_RESET");
_ASSIGN_eventName(NS_FORM_SUBMIT,"NS_FORM_SUBMIT");
_ASSIGN_eventName(NS_IMAGE_ABORT,"NS_IMAGE_ABORT");
_ASSIGN_eventName(NS_LOAD_ERROR,"NS_LOAD_ERROR");
_ASSIGN_eventName(NS_KEY_DOWN,"NS_KEY_DOWN");
_ASSIGN_eventName(NS_KEY_PRESS,"NS_KEY_PRESS");
_ASSIGN_eventName(NS_KEY_UP,"NS_KEY_UP");
_ASSIGN_eventName(NS_MOUSE_ENTER,"NS_MOUSE_ENTER");
_ASSIGN_eventName(NS_MOUSE_EXIT,"NS_MOUSE_EXIT");
_ASSIGN_eventName(NS_MOUSE_BUTTON_DOWN,"NS_MOUSE_BUTTON_DOWN");
_ASSIGN_eventName(NS_MOUSE_BUTTON_UP,"NS_MOUSE_BUTTON_UP");
_ASSIGN_eventName(NS_MOUSE_CLICK,"NS_MOUSE_CLICK");
_ASSIGN_eventName(NS_MOUSE_DOUBLECLICK,"NS_MOUSE_DBLCLICK");
_ASSIGN_eventName(NS_MOUSE_MOVE,"NS_MOUSE_MOVE");
_ASSIGN_eventName(NS_LOAD,"NS_LOAD");
_ASSIGN_eventName(NS_POPSTATE,"NS_POPSTATE");
_ASSIGN_eventName(NS_BEFORE_SCRIPT_EXECUTE,"NS_BEFORE_SCRIPT_EXECUTE");
_ASSIGN_eventName(NS_AFTER_SCRIPT_EXECUTE,"NS_AFTER_SCRIPT_EXECUTE");
_ASSIGN_eventName(NS_PAGE_UNLOAD,"NS_PAGE_UNLOAD");
_ASSIGN_eventName(NS_HASHCHANGE,"NS_HASHCHANGE");
_ASSIGN_eventName(NS_READYSTATECHANGE,"NS_READYSTATECHANGE");
_ASSIGN_eventName(NS_XUL_BROADCAST, "NS_XUL_BROADCAST");
_ASSIGN_eventName(NS_XUL_COMMAND_UPDATE, "NS_XUL_COMMAND_UPDATE");
#undef _ASSIGN_eventName
default:
{
char buf[32];
sprintf(buf,"UNKNOWN: %d",aGuiEvent->message);
CopyASCIItoUTF16(buf, eventName);
}
break;
}
return nsAutoString(eventName);
}
//////////////////////////////////////////////////////////////
//
// Code to deal with paint and event debug prefs.
//
//////////////////////////////////////////////////////////////
struct PrefPair
{
const char * name;
bool value;
};
static PrefPair debug_PrefValues[] =
{
{ "nglayout.debug.crossing_event_dumping", false },
{ "nglayout.debug.event_dumping", false },
{ "nglayout.debug.invalidate_dumping", false },
{ "nglayout.debug.motion_event_dumping", false },
{ "nglayout.debug.paint_dumping", false },
{ "nglayout.debug.paint_flashing", false }
};
//////////////////////////////////////////////////////////////
bool
nsBaseWidget::debug_GetCachedBoolPref(const char * aPrefName)
{
NS_ASSERTION(nullptr != aPrefName,"cmon, pref name is null.");
for (uint32_t i = 0; i < ArrayLength(debug_PrefValues); i++)
{
if (strcmp(debug_PrefValues[i].name, aPrefName) == 0)
{
return debug_PrefValues[i].value;
}
}
return false;
}
//////////////////////////////////////////////////////////////
static void debug_SetCachedBoolPref(const char * aPrefName,bool aValue)
{
NS_ASSERTION(nullptr != aPrefName,"cmon, pref name is null.");
for (uint32_t i = 0; i < ArrayLength(debug_PrefValues); i++)
{
if (strcmp(debug_PrefValues[i].name, aPrefName) == 0)
{
debug_PrefValues[i].value = aValue;
return;
}
}
NS_ASSERTION(false, "cmon, this code is not reached dude.");
}
//////////////////////////////////////////////////////////////
class Debug_PrefObserver MOZ_FINAL : public nsIObserver {
public:
NS_DECL_ISUPPORTS
NS_DECL_NSIOBSERVER
};
NS_IMPL_ISUPPORTS1(Debug_PrefObserver, nsIObserver)
NS_IMETHODIMP
Debug_PrefObserver::Observe(nsISupports* subject, const char* topic,
const PRUnichar* data)
{
NS_ConvertUTF16toUTF8 prefName(data);
bool value = Preferences::GetBool(prefName.get(), false);
debug_SetCachedBoolPref(prefName.get(), value);
return NS_OK;
}
//////////////////////////////////////////////////////////////
/* static */ void
debug_RegisterPrefCallbacks()
{
static bool once = true;
if (!once) {
return;
}
once = false;
nsCOMPtr<nsIObserver> obs(new Debug_PrefObserver());
for (uint32_t i = 0; i < ArrayLength(debug_PrefValues); i++) {
// Initialize the pref values
debug_PrefValues[i].value =
Preferences::GetBool(debug_PrefValues[i].name, false);
if (obs) {
// Register callbacks for when these change
Preferences::AddStrongObserver(obs, debug_PrefValues[i].name);
}
}
}
//////////////////////////////////////////////////////////////
static int32_t
_GetPrintCount()
{
static int32_t sCount = 0;
return ++sCount;
}
//////////////////////////////////////////////////////////////
/* static */ bool
nsBaseWidget::debug_WantPaintFlashing()
{
return debug_GetCachedBoolPref("nglayout.debug.paint_flashing");
}
//////////////////////////////////////////////////////////////
/* static */ void
nsBaseWidget::debug_DumpEvent(FILE * aFileOut,
nsIWidget * aWidget,
nsGUIEvent * aGuiEvent,
const nsAutoCString & aWidgetName,
int32_t aWindowID)
{
if (aGuiEvent->message == NS_MOUSE_MOVE)
{
if (!debug_GetCachedBoolPref("nglayout.debug.motion_event_dumping"))
return;
}
if (aGuiEvent->message == NS_MOUSE_ENTER ||
aGuiEvent->message == NS_MOUSE_EXIT)
{
if (!debug_GetCachedBoolPref("nglayout.debug.crossing_event_dumping"))
return;
}
if (!debug_GetCachedBoolPref("nglayout.debug.event_dumping"))
return;
NS_LossyConvertUTF16toASCII tempString(debug_GuiEventToString(aGuiEvent).get());
fprintf(aFileOut,
"%4d %-26s widget=%-8p name=%-12s id=0x%-6x refpt=%d,%d\n",
_GetPrintCount(),
tempString.get(),
(void *) aWidget,
aWidgetName.get(),
aWindowID,
aGuiEvent->refPoint.x,
aGuiEvent->refPoint.y);
}
//////////////////////////////////////////////////////////////
/* static */ void
nsBaseWidget::debug_DumpPaintEvent(FILE * aFileOut,
nsIWidget * aWidget,
const nsIntRegion & aRegion,
const nsAutoCString & aWidgetName,
int32_t aWindowID)
{
NS_ASSERTION(nullptr != aFileOut,"cmon, null output FILE");
NS_ASSERTION(nullptr != aWidget,"cmon, the widget is null");
if (!debug_GetCachedBoolPref("nglayout.debug.paint_dumping"))
return;
nsIntRect rect = aRegion.GetBounds();
fprintf(aFileOut,
"%4d PAINT widget=%p name=%-12s id=0x%-6x bounds-rect=%3d,%-3d %3d,%-3d",
_GetPrintCount(),
(void *) aWidget,
aWidgetName.get(),
aWindowID,
rect.x, rect.y, rect.width, rect.height
);
fprintf(aFileOut,"\n");
}
//////////////////////////////////////////////////////////////
/* static */ void
nsBaseWidget::debug_DumpInvalidate(FILE * aFileOut,
nsIWidget * aWidget,
const nsIntRect * aRect,
const nsAutoCString & aWidgetName,
int32_t aWindowID)
{
if (!debug_GetCachedBoolPref("nglayout.debug.invalidate_dumping"))
return;
NS_ASSERTION(nullptr != aFileOut,"cmon, null output FILE");
NS_ASSERTION(nullptr != aWidget,"cmon, the widget is null");
fprintf(aFileOut,
"%4d Invalidate widget=%p name=%-12s id=0x%-6x",
_GetPrintCount(),
(void *) aWidget,
aWidgetName.get(),
aWindowID);
if (aRect)
{
fprintf(aFileOut,
" rect=%3d,%-3d %3d,%-3d",
aRect->x,
aRect->y,
aRect->width,
aRect->height);
}
else
{
fprintf(aFileOut,
" rect=%-15s",
"none");
}
fprintf(aFileOut,"\n");
}
//////////////////////////////////////////////////////////////
#endif // DEBUG
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