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gecko/layout/printing/nsPrintEngine.cpp

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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 "nsPrintEngine.h"
#include "nsIStringBundle.h"
#include "nsReadableUtils.h"
#include "nsCRT.h"
#include "mozilla/Selection.h"
#include "nsIScriptGlobalObject.h"
#include "nsPIDOMWindow.h"
#include "nsIDocShell.h"
#include "nsIFrame.h"
#include "nsIURI.h"
#include "nsITextToSubURI.h"
#include "nsError.h"
#include "nsView.h"
#include "nsAsyncDOMEvent.h"
#include <algorithm>
// Print Options
#include "nsIPrintSettings.h"
#include "nsIPrintSettingsService.h"
#include "nsIPrintOptions.h"
#include "nsIPrintSession.h"
#include "nsGfxCIID.h"
#include "nsIServiceManager.h"
#include "nsGkAtoms.h"
#include "nsXPCOM.h"
#include "nsISupportsPrimitives.h"
static const char sPrintSettingsServiceContractID[] = "@mozilla.org/gfx/printsettings-service;1";
// Printing Events
#include "nsPrintPreviewListener.h"
#include "nsThreadUtils.h"
// Printing
#include "nsIWebBrowserPrint.h"
#include "nsIDOMHTMLFrameElement.h"
#include "nsIDOMHTMLFrameSetElement.h"
#include "nsIDOMHTMLIFrameElement.h"
#include "nsIDOMHTMLObjectElement.h"
#include "nsIDOMHTMLEmbedElement.h"
// Print Preview
#include "imgIContainer.h" // image animation mode constants
#include "nsIWebBrowserPrint.h" // needed for PrintPreview Navigation constants
// Print Progress
#include "nsIPrintProgress.h"
#include "nsIPrintProgressParams.h"
#include "nsIObserver.h"
// Print error dialog
#include "nsIPrompt.h"
#include "nsIWindowWatcher.h"
// Printing Prompts
#include "nsIPrintingPromptService.h"
static const char kPrintingPromptService[] = "@mozilla.org/embedcomp/printingprompt-service;1";
// Printing Timer
#include "nsPagePrintTimer.h"
// FrameSet
#include "nsIDocument.h"
// Focus
#include "nsIDOMEventTarget.h"
#include "nsISelectionController.h"
// Misc
#include "nsISupportsUtils.h"
#include "nsIScriptContext.h"
#include "nsIDOMDocument.h"
#include "nsISelectionListener.h"
#include "nsISelectionPrivate.h"
#include "nsIDOMRange.h"
#include "nsContentCID.h"
#include "nsLayoutCID.h"
#include "nsContentUtils.h"
#include "nsIPresShell.h"
#include "nsLayoutUtils.h"
#include "mozilla/Preferences.h"
#include "nsWidgetsCID.h"
#include "nsIDeviceContextSpec.h"
#include "nsViewManager.h"
#include "nsView.h"
#include "nsRenderingContext.h"
#include "nsIPageSequenceFrame.h"
#include "nsIURL.h"
#include "nsIContentViewerEdit.h"
#include "nsIContentViewerFile.h"
#include "nsIMarkupDocumentViewer.h"
#include "nsIInterfaceRequestor.h"
#include "nsIInterfaceRequestorUtils.h"
#include "nsIDocShellTreeOwner.h"
#include "nsIWebBrowserChrome.h"
#include "nsIBaseWindow.h"
#include "nsILayoutHistoryState.h"
#include "nsFrameManager.h"
#include "nsGUIEvent.h"
#include "nsHTMLReflowState.h"
#include "nsIDOMHTMLAnchorElement.h"
#include "nsIDOMHTMLAreaElement.h"
#include "nsIDOMHTMLLinkElement.h"
#include "nsIDOMHTMLImageElement.h"
#include "nsIContentViewerContainer.h"
#include "nsIContentViewer.h"
#include "nsIDocumentViewerPrint.h"
#include "nsFocusManager.h"
#include "nsRange.h"
#include "nsCDefaultURIFixup.h"
#include "nsIURIFixup.h"
#include "mozilla/dom/Element.h"
#include "nsContentList.h"
using namespace mozilla;
using namespace mozilla::dom;
//-----------------------------------------------------
// PR LOGGING
#ifdef MOZ_LOGGING
#define FORCE_PR_LOG /* Allow logging in the release build */
#endif
#include "prlog.h"
#ifdef PR_LOGGING
#ifdef DEBUG
// PR_LOGGING is force to always be on (even in release builds)
// but we only want some of it on,
//#define EXTENDED_DEBUG_PRINTING
#endif
#define DUMP_LAYOUT_LEVEL 9 // this turns on the dumping of each doucment's layout info
static PRLogModuleInfo *
GetPrintingLog()
{
static PRLogModuleInfo *sLog;
if (!sLog)
sLog = PR_NewLogModule("printing");
return sLog;
}
#define PR_PL(_p1) PR_LOG(GetPrintingLog(), PR_LOG_DEBUG, _p1);
#ifdef EXTENDED_DEBUG_PRINTING
static uint32_t gDumpFileNameCnt = 0;
static uint32_t gDumpLOFileNameCnt = 0;
#endif
#define PRT_YESNO(_p) ((_p)?"YES":"NO")
static const char * gFrameTypesStr[] = {"eDoc", "eFrame", "eIFrame", "eFrameSet"};
static const char * gPrintFrameTypeStr[] = {"kNoFrames", "kFramesAsIs", "kSelectedFrame", "kEachFrameSep"};
static const char * gFrameHowToEnableStr[] = {"kFrameEnableNone", "kFrameEnableAll", "kFrameEnableAsIsAndEach"};
static const char * gPrintRangeStr[] = {"kRangeAllPages", "kRangeSpecifiedPageRange", "kRangeSelection", "kRangeFocusFrame"};
#else
#define PRT_YESNO(_p)
#define PR_PL(_p1)
#endif
#ifdef EXTENDED_DEBUG_PRINTING
// Forward Declarations
static void DumpPrintObjectsListStart(const char * aStr, nsTArray<nsPrintObject*> * aDocList);
static void DumpPrintObjectsTree(nsPrintObject * aPO, int aLevel= 0, FILE* aFD = nullptr);
static void DumpPrintObjectsTreeLayout(nsPrintObject * aPO,nsDeviceContext * aDC, int aLevel= 0, FILE * aFD = nullptr);
#define DUMP_DOC_LIST(_title) DumpPrintObjectsListStart((_title), mPrt->mPrintDocList);
#define DUMP_DOC_TREE DumpPrintObjectsTree(mPrt->mPrintObject);
#define DUMP_DOC_TREELAYOUT DumpPrintObjectsTreeLayout(mPrt->mPrintObject, mPrt->mPrintDC);
#else
#define DUMP_DOC_LIST(_title)
#define DUMP_DOC_TREE
#define DUMP_DOC_TREELAYOUT
#endif
class nsScriptSuppressor
{
public:
nsScriptSuppressor(nsPrintEngine* aPrintEngine)
: mPrintEngine(aPrintEngine), mSuppressed(false) {}
~nsScriptSuppressor() { Unsuppress(); }
void Suppress()
{
if (mPrintEngine) {
mSuppressed = true;
mPrintEngine->TurnScriptingOn(false);
}
}
void Unsuppress()
{
if (mPrintEngine && mSuppressed) {
mPrintEngine->TurnScriptingOn(true);
}
mSuppressed = false;
}
void Disconnect() { mPrintEngine = nullptr; }
protected:
nsRefPtr<nsPrintEngine> mPrintEngine;
bool mSuppressed;
};
NS_IMPL_ISUPPORTS3(nsPrintEngine, nsIWebProgressListener,
nsISupportsWeakReference, nsIObserver)
//---------------------------------------------------
//-- nsPrintEngine Class Impl
//---------------------------------------------------
nsPrintEngine::nsPrintEngine() :
mIsCreatingPrintPreview(false),
mIsDoingPrinting(false),
mIsDoingPrintPreview(false),
mProgressDialogIsShown(false),
mScreenDPI(115.0f),
mPrt(nullptr),
mPagePrintTimer(nullptr),
mPageSeqFrame(nullptr),
mPrtPreview(nullptr),
mOldPrtPreview(nullptr),
mDebugFile(nullptr),
mLoadCounter(0),
mDidLoadDataForPrinting(false),
mIsDestroying(false),
mDisallowSelectionPrint(false),
mNoMarginBoxes(false)
{
}
//-------------------------------------------------------
nsPrintEngine::~nsPrintEngine()
{
Destroy(); // for insurance
}
//-------------------------------------------------------
void nsPrintEngine::Destroy()
{
if (mIsDestroying) {
return;
}
mIsDestroying = true;
if (mPrt) {
delete mPrt;
mPrt = nullptr;
}
#ifdef NS_PRINT_PREVIEW
if (mPrtPreview) {
delete mPrtPreview;
mPrtPreview = nullptr;
}
// This is insruance
if (mOldPrtPreview) {
delete mOldPrtPreview;
mOldPrtPreview = nullptr;
}
#endif
mDocViewerPrint = nullptr;
}
//-------------------------------------------------------
void nsPrintEngine::DestroyPrintingData()
{
if (mPrt) {
nsPrintData* data = mPrt;
mPrt = nullptr;
delete data;
}
}
//---------------------------------------------------------------------------------
//-- Section: Methods needed by the DocViewer
//---------------------------------------------------------------------------------
//--------------------------------------------------------
nsresult nsPrintEngine::Initialize(nsIDocumentViewerPrint* aDocViewerPrint,
nsIWeakReference* aContainer,
nsIDocument* aDocument,
float aScreenDPI,
FILE* aDebugFile)
{
NS_ENSURE_ARG_POINTER(aDocViewerPrint);
NS_ENSURE_ARG_POINTER(aContainer);
NS_ENSURE_ARG_POINTER(aDocument);
mDocViewerPrint = aDocViewerPrint;
mContainer = aContainer;
mDocument = aDocument;
mScreenDPI = aScreenDPI;
mDebugFile = aDebugFile; // ok to be NULL
return NS_OK;
}
//-------------------------------------------------------
bool
nsPrintEngine::CheckBeforeDestroy()
{
if (mPrt && mPrt->mPreparingForPrint) {
mPrt->mDocWasToBeDestroyed = true;
return true;
}
return false;
}
//-------------------------------------------------------
nsresult
nsPrintEngine::Cancelled()
{
if (mPrt && mPrt->mPrintSettings) {
return mPrt->mPrintSettings->SetIsCancelled(true);
}
return NS_ERROR_FAILURE;
}
//-------------------------------------------------------
// Install our event listeners on the document to prevent
// some events from being processed while in PrintPreview
//
// No return code - if this fails, there isn't much we can do
void
nsPrintEngine::InstallPrintPreviewListener()
{
if (!mPrt->mPPEventListeners) {
nsCOMPtr<nsIDocShell> docShell = do_QueryReferent(mContainer);
nsCOMPtr<nsPIDOMWindow> win(do_GetInterface(docShell));
if (win) {
nsCOMPtr<nsIDOMEventTarget> target(do_QueryInterface(win->GetFrameElementInternal()));
mPrt->mPPEventListeners = new nsPrintPreviewListener(target);
mPrt->mPPEventListeners->AddListeners();
}
}
}
//----------------------------------------------------------------------
nsresult
nsPrintEngine::GetSeqFrameAndCountPagesInternal(nsPrintObject* aPO,
nsIFrame*& aSeqFrame,
int32_t& aCount)
{
NS_ENSURE_ARG_POINTER(aPO);
// Finds the SimplePageSequencer frame
nsIPageSequenceFrame* seqFrame = aPO->mPresShell->GetPageSequenceFrame();
if (seqFrame) {
aSeqFrame = do_QueryFrame(seqFrame);
} else {
aSeqFrame = nullptr;
}
if (aSeqFrame == nullptr) return NS_ERROR_FAILURE;
// first count the total number of pages
aCount = 0;
nsIFrame* pageFrame = aSeqFrame->GetFirstPrincipalChild();
while (pageFrame != nullptr) {
aCount++;
pageFrame = pageFrame->GetNextSibling();
}
return NS_OK;
}
//-----------------------------------------------------------------
nsresult nsPrintEngine::GetSeqFrameAndCountPages(nsIFrame*& aSeqFrame, int32_t& aCount)
{
NS_ASSERTION(mPrtPreview, "mPrtPreview can't be null!");
return GetSeqFrameAndCountPagesInternal(mPrtPreview->mPrintObject, aSeqFrame, aCount);
}
//---------------------------------------------------------------------------------
//-- Done: Methods needed by the DocViewer
//---------------------------------------------------------------------------------
//---------------------------------------------------------------------------------
//-- Section: nsIWebBrowserPrint
//---------------------------------------------------------------------------------
// Foward decl for Debug Helper Functions
#ifdef EXTENDED_DEBUG_PRINTING
static int RemoveFilesInDir(const char * aDir);
static void GetDocTitleAndURL(nsPrintObject* aPO, char *& aDocStr, char *& aURLStr);
static void DumpPrintObjectsTree(nsPrintObject * aPO, int aLevel, FILE* aFD);
static void DumpPrintObjectsList(nsTArray<nsPrintObject*> * aDocList);
static void RootFrameList(nsPresContext* aPresContext, FILE* out, int32_t aIndent);
static void DumpViews(nsIDocShell* aDocShell, FILE* out);
static void DumpLayoutData(char* aTitleStr, char* aURLStr,
nsPresContext* aPresContext,
nsDeviceContext * aDC, nsIFrame * aRootFrame,
nsIDocShell * aDocShell, FILE* aFD);
#endif
//--------------------------------------------------------------------------------
nsresult
nsPrintEngine::CommonPrint(bool aIsPrintPreview,
nsIPrintSettings* aPrintSettings,
nsIWebProgressListener* aWebProgressListener,
nsIDOMDocument* aDoc) {
nsRefPtr<nsPrintEngine> kungfuDeathGrip = this;
nsresult rv = DoCommonPrint(aIsPrintPreview, aPrintSettings,
aWebProgressListener, aDoc);
if (NS_FAILED(rv)) {
if (aIsPrintPreview) {
SetIsCreatingPrintPreview(false);
SetIsPrintPreview(false);
} else {
SetIsPrinting(false);
}
if (mProgressDialogIsShown)
CloseProgressDialog(aWebProgressListener);
if (rv != NS_ERROR_ABORT && rv != NS_ERROR_OUT_OF_MEMORY)
ShowPrintErrorDialog(rv, !aIsPrintPreview);
delete mPrt;
mPrt = nullptr;
}
return rv;
}
nsresult
nsPrintEngine::DoCommonPrint(bool aIsPrintPreview,
nsIPrintSettings* aPrintSettings,
nsIWebProgressListener* aWebProgressListener,
nsIDOMDocument* aDoc)
{
nsresult rv;
if (aIsPrintPreview) {
// The WebProgressListener can be QI'ed to nsIPrintingPromptService
// then that means the progress dialog is already being shown.
nsCOMPtr<nsIPrintingPromptService> pps(do_QueryInterface(aWebProgressListener));
mProgressDialogIsShown = pps != nullptr;
if (mIsDoingPrintPreview) {
mOldPrtPreview = mPrtPreview;
mPrtPreview = nullptr;
}
} else {
mProgressDialogIsShown = false;
}
mPrt = new nsPrintData(aIsPrintPreview ? nsPrintData::eIsPrintPreview :
nsPrintData::eIsPrinting);
NS_ENSURE_TRUE(mPrt, NS_ERROR_OUT_OF_MEMORY);
// if they don't pass in a PrintSettings, then get the Global PS
mPrt->mPrintSettings = aPrintSettings;
if (!mPrt->mPrintSettings) {
rv = GetGlobalPrintSettings(getter_AddRefs(mPrt->mPrintSettings));
NS_ENSURE_SUCCESS(rv, rv);
}
rv = CheckForPrinters(mPrt->mPrintSettings);
NS_ENSURE_SUCCESS(rv, rv);
mPrt->mPrintSettings->SetIsCancelled(false);
mPrt->mPrintSettings->GetShrinkToFit(&mPrt->mShrinkToFit);
// In the case the margin boxes are not printed store the print settings for
// the footer/header to be used as default print setting for follow up prints.
mPrt->mPrintSettings->SetPersistMarginBoxSettings(!mNoMarginBoxes);
if (mNoMarginBoxes) {
// Set the footer/header to blank.
const PRUnichar* emptyString = EmptyString().get();
mPrt->mPrintSettings->SetHeaderStrLeft(emptyString);
mPrt->mPrintSettings->SetHeaderStrCenter(emptyString);
mPrt->mPrintSettings->SetHeaderStrRight(emptyString);
mPrt->mPrintSettings->SetFooterStrLeft(emptyString);
mPrt->mPrintSettings->SetFooterStrCenter(emptyString);
mPrt->mPrintSettings->SetFooterStrRight(emptyString);
}
if (aIsPrintPreview) {
SetIsCreatingPrintPreview(true);
SetIsPrintPreview(true);
nsCOMPtr<nsIMarkupDocumentViewer> viewer =
do_QueryInterface(mDocViewerPrint);
if (viewer) {
viewer->SetTextZoom(1.0f);
viewer->SetFullZoom(1.0f);
viewer->SetMinFontSize(0);
}
}
// Create a print session and let the print settings know about it.
// The print settings hold an nsWeakPtr to the session so it does not
// need to be cleared from the settings at the end of the job.
// XXX What lifetime does the printSession need to have?
nsCOMPtr<nsIPrintSession> printSession;
if (!aIsPrintPreview) {
printSession = do_CreateInstance("@mozilla.org/gfx/printsession;1", &rv);
NS_ENSURE_SUCCESS(rv, rv);
mPrt->mPrintSettings->SetPrintSession(printSession);
}
if (aWebProgressListener != nullptr) {
mPrt->mPrintProgressListeners.AppendObject(aWebProgressListener);
}
// Get the currently focused window and cache it
// because the Print Dialog will "steal" focus and later when you try
// to get the currently focused windows it will be NULL
mPrt->mCurrentFocusWin = FindFocusedDOMWindow();
// Check to see if there is a "regular" selection
bool isSelection = IsThereARangeSelection(mPrt->mCurrentFocusWin);
// Get the docshell for this documentviewer
nsCOMPtr<nsIDocShell> webContainer(do_QueryReferent(mContainer, &rv));
NS_ENSURE_SUCCESS(rv, rv);
{
nsAutoScriptBlocker scriptBlocker;
mPrt->mPrintObject = new nsPrintObject();
NS_ENSURE_TRUE(mPrt->mPrintObject, NS_ERROR_OUT_OF_MEMORY);
rv = mPrt->mPrintObject->Init(webContainer, aDoc, aIsPrintPreview);
NS_ENSURE_SUCCESS(rv, rv);
NS_ENSURE_TRUE(mPrt->mPrintDocList.AppendElement(mPrt->mPrintObject),
NS_ERROR_OUT_OF_MEMORY);
mPrt->mIsParentAFrameSet = IsParentAFrameSet(webContainer);
mPrt->mPrintObject->mFrameType = mPrt->mIsParentAFrameSet ? eFrameSet : eDoc;
// Build the "tree" of PrintObjects
BuildDocTree(mPrt->mPrintObject->mDocShell, &mPrt->mPrintDocList,
mPrt->mPrintObject);
}
if (!aIsPrintPreview) {
SetIsPrinting(true);
}
// XXX This isn't really correct...
if (!mPrt->mPrintObject->mDocument ||
!mPrt->mPrintObject->mDocument->GetRootElement())
return NS_ERROR_GFX_PRINTER_STARTDOC;
// Create the linkage from the sub-docs back to the content element
// in the parent document
MapContentToWebShells(mPrt->mPrintObject, mPrt->mPrintObject);
mPrt->mIsIFrameSelected = IsThereAnIFrameSelected(webContainer, mPrt->mCurrentFocusWin, mPrt->mIsParentAFrameSet);
// Setup print options for UI
if (mPrt->mIsParentAFrameSet) {
if (mPrt->mCurrentFocusWin) {
mPrt->mPrintSettings->SetHowToEnableFrameUI(nsIPrintSettings::kFrameEnableAll);
} else {
mPrt->mPrintSettings->SetHowToEnableFrameUI(nsIPrintSettings::kFrameEnableAsIsAndEach);
}
} else {
mPrt->mPrintSettings->SetHowToEnableFrameUI(nsIPrintSettings::kFrameEnableNone);
}
// Now determine how to set up the Frame print UI
mPrt->mPrintSettings->SetPrintOptions(nsIPrintSettings::kEnableSelectionRB,
isSelection || mPrt->mIsIFrameSelected);
nsCOMPtr<nsIDeviceContextSpec> devspec
(do_CreateInstance("@mozilla.org/gfx/devicecontextspec;1", &rv));
NS_ENSURE_SUCCESS(rv, rv);
nsScriptSuppressor scriptSuppressor(this);
if (!aIsPrintPreview) {
#ifdef DEBUG
mPrt->mDebugFilePtr = mDebugFile;
#endif
scriptSuppressor.Suppress();
bool printSilently;
mPrt->mPrintSettings->GetPrintSilent(&printSilently);
// Check prefs for a default setting as to whether we should print silently
printSilently =
Preferences::GetBool("print.always_print_silent", printSilently);
// Ask dialog to be Print Shown via the Plugable Printing Dialog Service
// This service is for the Print Dialog and the Print Progress Dialog
// If printing silently or you can't get the service continue on
if (!printSilently) {
nsCOMPtr<nsIPrintingPromptService> printPromptService(do_GetService(kPrintingPromptService));
if (printPromptService) {
nsIDOMWindow *domWin = mDocument->GetWindow();
NS_ENSURE_TRUE(domWin, NS_ERROR_FAILURE);
// Platforms not implementing a given dialog for the service may
// return NS_ERROR_NOT_IMPLEMENTED or an error code.
//
// NS_ERROR_NOT_IMPLEMENTED indicates they want default behavior
// Any other error code means we must bail out
//
nsCOMPtr<nsIWebBrowserPrint> wbp(do_QueryInterface(mDocViewerPrint));
rv = printPromptService->ShowPrintDialog(domWin, wbp,
mPrt->mPrintSettings);
//
// ShowPrintDialog triggers an event loop which means we can't assume
// that the state of this->{anything} matches the state we've checked
// above. Including that a given {thing} is non null.
if (!mPrt) {
return NS_ERROR_FAILURE;
}
if (NS_SUCCEEDED(rv)) {
// since we got the dialog and it worked then make sure we
// are telling GFX we want to print silent
printSilently = true;
if (mPrt->mPrintSettings) {
// The user might have changed shrink-to-fit in the print dialog, so update our copy of its state
mPrt->mPrintSettings->GetShrinkToFit(&mPrt->mShrinkToFit);
}
} else if (rv == NS_ERROR_NOT_IMPLEMENTED) {
// This means the Dialog service was there,
// but they choose not to implement this dialog and
// are looking for default behavior from the toolkit
rv = NS_OK;
}
} else {
// No dialog service available
rv = NS_ERROR_NOT_IMPLEMENTED;
}
} else {
// Call any code that requires a run of the event loop.
rv = mPrt->mPrintSettings->SetupSilentPrinting();
}
// Check explicitly for abort because it's expected
if (rv == NS_ERROR_ABORT)
return rv;
NS_ENSURE_SUCCESS(rv, rv);
}
rv = devspec->Init(nullptr, mPrt->mPrintSettings, aIsPrintPreview);
NS_ENSURE_SUCCESS(rv, rv);
mPrt->mPrintDC = new nsDeviceContext();
rv = mPrt->mPrintDC->InitForPrinting(devspec);
NS_ENSURE_SUCCESS(rv, rv);
if (aIsPrintPreview) {
mPrt->mPrintSettings->SetPrintFrameType(nsIPrintSettings::kFramesAsIs);
// override any UI that wants to PrintPreview any selection or page range
// we want to view every page in PrintPreview each time
mPrt->mPrintSettings->SetPrintRange(nsIPrintSettings::kRangeAllPages);
} else {
// Always check and set the print settings first and then fall back
// onto the PrintService if there isn't a PrintSettings
//
// Posiible Usage values:
// nsIPrintSettings::kUseInternalDefault
// nsIPrintSettings::kUseSettingWhenPossible
//
// NOTE: The consts are the same for PrintSettings and PrintSettings
int16_t printFrameTypeUsage = nsIPrintSettings::kUseSettingWhenPossible;
mPrt->mPrintSettings->GetPrintFrameTypeUsage(&printFrameTypeUsage);
// Ok, see if we are going to use our value and override the default
if (printFrameTypeUsage == nsIPrintSettings::kUseSettingWhenPossible) {
// Get the Print Options/Settings PrintFrameType to see what is preferred
int16_t printFrameType = nsIPrintSettings::kEachFrameSep;
mPrt->mPrintSettings->GetPrintFrameType(&printFrameType);
// Don't let anybody do something stupid like try to set it to
// kNoFrames when we are printing a FrameSet
if (printFrameType == nsIPrintSettings::kNoFrames) {
mPrt->mPrintFrameType = nsIPrintSettings::kEachFrameSep;
mPrt->mPrintSettings->SetPrintFrameType(mPrt->mPrintFrameType);
} else {
// First find out from the PrinService what options are available
// to us for Printing FrameSets
int16_t howToEnableFrameUI;
mPrt->mPrintSettings->GetHowToEnableFrameUI(&howToEnableFrameUI);
if (howToEnableFrameUI != nsIPrintSettings::kFrameEnableNone) {
switch (howToEnableFrameUI) {
case nsIPrintSettings::kFrameEnableAll:
mPrt->mPrintFrameType = printFrameType;
break;
case nsIPrintSettings::kFrameEnableAsIsAndEach:
if (printFrameType != nsIPrintSettings::kSelectedFrame) {
mPrt->mPrintFrameType = printFrameType;
} else { // revert back to a good value
mPrt->mPrintFrameType = nsIPrintSettings::kEachFrameSep;
}
break;
} // switch
mPrt->mPrintSettings->SetPrintFrameType(mPrt->mPrintFrameType);
}
}
} else {
mPrt->mPrintSettings->GetPrintFrameType(&mPrt->mPrintFrameType);
}
}
if (mPrt->mPrintFrameType == nsIPrintSettings::kEachFrameSep) {
CheckForChildFrameSets(mPrt->mPrintObject);
}
if (NS_FAILED(EnablePOsForPrinting())) {
return NS_ERROR_FAILURE;
}
// Attach progressListener to catch network requests.
nsCOMPtr<nsIWebProgress> webProgress = do_QueryInterface(mPrt->mPrintObject->mDocShell);
webProgress->AddProgressListener(
static_cast<nsIWebProgressListener*>(this),
nsIWebProgress::NOTIFY_STATE_REQUEST);
mLoadCounter = 0;
mDidLoadDataForPrinting = false;
if (aIsPrintPreview) {
bool notifyOnInit = false;
ShowPrintProgress(false, notifyOnInit);
// Very important! Turn Off scripting
TurnScriptingOn(false);
if (!notifyOnInit) {
InstallPrintPreviewListener();
rv = InitPrintDocConstruction(false);
} else {
rv = NS_OK;
}
} else {
bool doNotify;
ShowPrintProgress(true, doNotify);
if (!doNotify) {
// Print listener setup...
mPrt->OnStartPrinting();
rv = InitPrintDocConstruction(false);
}
}
// We will enable scripting later after printing has finished.
scriptSuppressor.Disconnect();
return NS_OK;
}
//---------------------------------------------------------------------------------
NS_IMETHODIMP
nsPrintEngine::Print(nsIPrintSettings* aPrintSettings,
nsIWebProgressListener* aWebProgressListener)
{
// If we have a print preview document, use that instead of the original
// mDocument. That way animated images etc. get printed using the same state
// as in print preview.
nsCOMPtr<nsIDOMDocument> doc =
do_QueryInterface(mPrtPreview && mPrtPreview->mPrintObject ?
mPrtPreview->mPrintObject->mDocument : mDocument);
return CommonPrint(false, aPrintSettings, aWebProgressListener, doc);
}
NS_IMETHODIMP
nsPrintEngine::PrintPreview(nsIPrintSettings* aPrintSettings,
nsIDOMWindow *aChildDOMWin,
nsIWebProgressListener* aWebProgressListener)
{
// Get the DocShell and see if it is busy
// (We can't Print Preview this document if it is still busy)
nsCOMPtr<nsIDocShell> docShell(do_QueryReferent(mContainer));
NS_ENSURE_STATE(docShell);
uint32_t busyFlags = nsIDocShell::BUSY_FLAGS_NONE;
if (NS_FAILED(docShell->GetBusyFlags(&busyFlags)) ||
busyFlags != nsIDocShell::BUSY_FLAGS_NONE) {
CloseProgressDialog(aWebProgressListener);
ShowPrintErrorDialog(NS_ERROR_GFX_PRINTER_DOC_IS_BUSY, false);
return NS_ERROR_FAILURE;
}
NS_ENSURE_STATE(aChildDOMWin);
nsCOMPtr<nsIDOMDocument> doc;
aChildDOMWin->GetDocument(getter_AddRefs(doc));
NS_ENSURE_STATE(doc);
// Document is not busy -- go ahead with the Print Preview
return CommonPrint(true, aPrintSettings, aWebProgressListener, doc);
}
//----------------------------------------------------------------------------------
/* readonly attribute boolean isFramesetDocument; */
NS_IMETHODIMP
nsPrintEngine::GetIsFramesetDocument(bool *aIsFramesetDocument)
{
nsCOMPtr<nsIDocShell> webContainer(do_QueryReferent(mContainer));
*aIsFramesetDocument = IsParentAFrameSet(webContainer);
return NS_OK;
}
//----------------------------------------------------------------------------------
/* readonly attribute boolean isIFrameSelected; */
NS_IMETHODIMP
nsPrintEngine::GetIsIFrameSelected(bool *aIsIFrameSelected)
{
*aIsIFrameSelected = false;
// Get the docshell for this documentviewer
nsCOMPtr<nsIDocShell> webContainer(do_QueryReferent(mContainer));
// Get the currently focused window
nsCOMPtr<nsIDOMWindow> currentFocusWin = FindFocusedDOMWindow();
if (currentFocusWin && webContainer) {
// Get whether the doc contains a frameset
// Also, check to see if the currently focus docshell
// is a child of this docshell
bool isParentFrameSet;
*aIsIFrameSelected = IsThereAnIFrameSelected(webContainer, currentFocusWin, isParentFrameSet);
}
return NS_OK;
}
//----------------------------------------------------------------------------------
/* readonly attribute boolean isRangeSelection; */
NS_IMETHODIMP
nsPrintEngine::GetIsRangeSelection(bool *aIsRangeSelection)
{
// Get the currently focused window
nsCOMPtr<nsIDOMWindow> currentFocusWin = FindFocusedDOMWindow();
*aIsRangeSelection = IsThereARangeSelection(currentFocusWin);
return NS_OK;
}
//----------------------------------------------------------------------------------
/* readonly attribute boolean isFramesetFrameSelected; */
NS_IMETHODIMP
nsPrintEngine::GetIsFramesetFrameSelected(bool *aIsFramesetFrameSelected)
{
// Get the currently focused window
nsCOMPtr<nsIDOMWindow> currentFocusWin = FindFocusedDOMWindow();
*aIsFramesetFrameSelected = currentFocusWin != nullptr;
return NS_OK;
}
//----------------------------------------------------------------------------------
/* readonly attribute long printPreviewNumPages; */
NS_IMETHODIMP
nsPrintEngine::GetPrintPreviewNumPages(int32_t *aPrintPreviewNumPages)
{
NS_ENSURE_ARG_POINTER(aPrintPreviewNumPages);
nsPrintData* prt = nullptr;
nsIFrame* seqFrame = nullptr;
*aPrintPreviewNumPages = 0;
// When calling this function, the FinishPrintPreview() function might not
// been called as there are still some
if (mPrtPreview) {
prt = mPrtPreview;
} else {
prt = mPrt;
}
if ((!prt) ||
NS_FAILED(GetSeqFrameAndCountPagesInternal(prt->mPrintObject, seqFrame, *aPrintPreviewNumPages))) {
return NS_ERROR_FAILURE;
}
return NS_OK;
}
//----------------------------------------------------------------------------------
// Enumerate all the documents for their titles
NS_IMETHODIMP
nsPrintEngine::EnumerateDocumentNames(uint32_t* aCount,
PRUnichar*** aResult)
{
NS_ENSURE_ARG(aCount);
NS_ENSURE_ARG_POINTER(aResult);
*aCount = 0;
*aResult = nullptr;
int32_t numDocs = mPrt->mPrintDocList.Length();
PRUnichar** array = (PRUnichar**) nsMemory::Alloc(numDocs * sizeof(PRUnichar*));
if (!array)
return NS_ERROR_OUT_OF_MEMORY;
for (int32_t i=0;i<numDocs;i++) {
nsPrintObject* po = mPrt->mPrintDocList.ElementAt(i);
NS_ASSERTION(po, "nsPrintObject can't be null!");
PRUnichar * docTitleStr;
PRUnichar * docURLStr;
GetDocumentTitleAndURL(po->mDocument, &docTitleStr, &docURLStr);
// Use the URL if the doc is empty
if (!docTitleStr || !*docTitleStr) {
if (docURLStr && *docURLStr) {
nsMemory::Free(docTitleStr);
docTitleStr = docURLStr;
} else {
nsMemory::Free(docURLStr);
}
docURLStr = nullptr;
if (!docTitleStr || !*docTitleStr) {
CleanupDocTitleArray(array, i);
return NS_ERROR_OUT_OF_MEMORY;
}
}
array[i] = docTitleStr;
if (docURLStr) nsMemory::Free(docURLStr);
}
*aCount = numDocs;
*aResult = array;
return NS_OK;
}
//----------------------------------------------------------------------------------
/* readonly attribute nsIPrintSettings globalPrintSettings; */
nsresult
nsPrintEngine::GetGlobalPrintSettings(nsIPrintSettings **aGlobalPrintSettings)
{
NS_ENSURE_ARG_POINTER(aGlobalPrintSettings);
nsresult rv = NS_ERROR_FAILURE;
nsCOMPtr<nsIPrintSettingsService> printSettingsService =
do_GetService(sPrintSettingsServiceContractID, &rv);
if (NS_SUCCEEDED(rv)) {
rv = printSettingsService->GetGlobalPrintSettings(aGlobalPrintSettings);
}
return rv;
}
//----------------------------------------------------------------------------------
/* readonly attribute boolean doingPrint; */
NS_IMETHODIMP
nsPrintEngine::GetDoingPrint(bool *aDoingPrint)
{
NS_ENSURE_ARG_POINTER(aDoingPrint);
*aDoingPrint = mIsDoingPrinting;
return NS_OK;
}
//----------------------------------------------------------------------------------
/* readonly attribute boolean doingPrintPreview; */
NS_IMETHODIMP
nsPrintEngine::GetDoingPrintPreview(bool *aDoingPrintPreview)
{
NS_ENSURE_ARG_POINTER(aDoingPrintPreview);
*aDoingPrintPreview = mIsDoingPrintPreview;
return NS_OK;
}
//----------------------------------------------------------------------------------
/* readonly attribute nsIPrintSettings currentPrintSettings; */
NS_IMETHODIMP
nsPrintEngine::GetCurrentPrintSettings(nsIPrintSettings * *aCurrentPrintSettings)
{
NS_ENSURE_ARG_POINTER(aCurrentPrintSettings);
if (mPrt) {
*aCurrentPrintSettings = mPrt->mPrintSettings;
} else if (mPrtPreview) {
*aCurrentPrintSettings = mPrtPreview->mPrintSettings;
} else {
*aCurrentPrintSettings = nullptr;
}
NS_IF_ADDREF(*aCurrentPrintSettings);
return NS_OK;
}
//-----------------------------------------------------------------
//-- Section: Pre-Reflow Methods
//-----------------------------------------------------------------
//---------------------------------------------------------------------
// This method checks to see if there is at least one printer defined
// and if so, it sets the first printer in the list as the default name
// in the PrintSettings which is then used for Printer Preview
nsresult
nsPrintEngine::CheckForPrinters(nsIPrintSettings* aPrintSettings)
{
#if defined(XP_MACOSX) || defined(ANDROID)
// Mac doesn't support retrieving a printer list.
return NS_OK;
#else
NS_ENSURE_ARG_POINTER(aPrintSettings);
// See if aPrintSettings already has a printer
nsXPIDLString printerName;
nsresult rv = aPrintSettings->GetPrinterName(getter_Copies(printerName));
if (NS_SUCCEEDED(rv) && !printerName.IsEmpty()) {
return NS_OK;
}
// aPrintSettings doesn't have a printer set. Try to fetch the default.
nsCOMPtr<nsIPrintSettingsService> printSettingsService =
do_GetService(sPrintSettingsServiceContractID, &rv);
NS_ENSURE_SUCCESS(rv, rv);
rv = printSettingsService->GetDefaultPrinterName(getter_Copies(printerName));
if (NS_SUCCEEDED(rv) && !printerName.IsEmpty()) {
rv = aPrintSettings->SetPrinterName(printerName.get());
}
return rv;
#endif
}
//----------------------------------------------------------------------
// Set up to use the "pluggable" Print Progress Dialog
void
nsPrintEngine::ShowPrintProgress(bool aIsForPrinting, bool& aDoNotify)
{
// default to not notifying, that if something here goes wrong
// or we aren't going to show the progress dialog we can straight into
// reflowing the doc for printing.
aDoNotify = false;
// Assume we can't do progress and then see if we can
bool showProgresssDialog = false;
// if it is already being shown then don't bother to find out if it should be
// so skip this and leave mShowProgressDialog set to FALSE
if (!mProgressDialogIsShown) {
showProgresssDialog = Preferences::GetBool("print.show_print_progress");
}
// Turning off the showing of Print Progress in Prefs overrides
// whether the calling PS desire to have it on or off, so only check PS if
// prefs says it's ok to be on.
if (showProgresssDialog) {
mPrt->mPrintSettings->GetShowPrintProgress(&showProgresssDialog);
}
// Now open the service to get the progress dialog
// If we don't get a service, that's ok, then just don't show progress
if (showProgresssDialog) {
nsCOMPtr<nsIPrintingPromptService> printPromptService(do_GetService(kPrintingPromptService));
if (printPromptService) {
nsPIDOMWindow *domWin = mDocument->GetWindow();
if (!domWin) return;
nsCOMPtr<nsIDocShell> docShell = domWin->GetDocShell();
if (!docShell) return;
nsCOMPtr<nsIDocShellTreeOwner> owner;
docShell->GetTreeOwner(getter_AddRefs(owner));
nsCOMPtr<nsIWebBrowserChrome> browserChrome = do_GetInterface(owner);
if (!browserChrome) return;
bool isModal = true;
browserChrome->IsWindowModal(&isModal);
if (isModal) {
// Showing a print progress dialog when printing a modal window
// isn't supported. See bug 301560.
return;
}
nsCOMPtr<nsIWebProgressListener> printProgressListener;
nsCOMPtr<nsIWebBrowserPrint> wbp(do_QueryInterface(mDocViewerPrint));
nsresult rv = printPromptService->ShowProgress(domWin, wbp, mPrt->mPrintSettings, this, aIsForPrinting,
getter_AddRefs(printProgressListener),
getter_AddRefs(mPrt->mPrintProgressParams),
&aDoNotify);
if (NS_SUCCEEDED(rv)) {
if (printProgressListener && mPrt->mPrintProgressParams) {
mPrt->mPrintProgressListeners.AppendObject(printProgressListener);
SetDocAndURLIntoProgress(mPrt->mPrintObject, mPrt->mPrintProgressParams);
}
}
}
}
}
//---------------------------------------------------------------------
bool
nsPrintEngine::IsThereARangeSelection(nsIDOMWindow* aDOMWin)
{
if (mDisallowSelectionPrint)
return false;
nsCOMPtr<nsIPresShell> presShell;
if (aDOMWin) {
nsCOMPtr<nsPIDOMWindow> window(do_QueryInterface(aDOMWin));
presShell = window->GetDocShell()->GetPresShell();
}
if (!presShell)
return false;
// check here to see if there is a range selection
// so we know whether to turn on the "Selection" radio button
Selection* selection =
presShell->GetCurrentSelection(nsISelectionController::SELECTION_NORMAL);
if (!selection) {
return false;
}
int32_t rangeCount = selection->GetRangeCount();
if (!rangeCount) {
return false;
}
if (rangeCount > 1) {
return true;
}
// check to make sure it isn't an insertion selection
return selection->GetRangeAt(0) && !selection->IsCollapsed();
}
//---------------------------------------------------------------------
bool
nsPrintEngine::IsParentAFrameSet(nsIDocShell * aParent)
{
// See if the incoming doc is the root document
if (!aParent) return false;
// When it is the top level document we need to check
// to see if it contains a frameset. If it does, then
// we only want to print the doc's children and not the document itself
// For anything else we always print all the children and the document
// for example, if the doc contains an IFRAME we eant to print the child
// document (the IFRAME) and then the rest of the document.
//
// XXX we really need to search the frame tree, and not the content
// but there is no way to distinguish between IFRAMEs and FRAMEs
// with the GetFrameType call.
// Bug 53459 has been files so we can eventually distinguish
// between IFRAME frames and FRAME frames
bool isFrameSet = false;
// only check to see if there is a frameset if there is
// NO parent doc for this doc. meaning this parent is the root doc
nsCOMPtr<nsIDOMDocument> domDoc = do_GetInterface(aParent);
nsCOMPtr<nsIDocument> doc = do_QueryInterface(domDoc);
if (doc) {
nsIContent *rootElement = doc->GetRootElement();
if (rootElement) {
isFrameSet = HasFramesetChild(rootElement);
}
}
return isFrameSet;
}
//---------------------------------------------------------------------
// Recursively build a list of sub documents to be printed
// that mirrors the document tree
void
nsPrintEngine::BuildDocTree(nsIDocShellTreeNode * aParentNode,
nsTArray<nsPrintObject*> * aDocList,
nsPrintObject * aPO)
{
NS_ASSERTION(aParentNode, "Pointer is null!");
NS_ASSERTION(aDocList, "Pointer is null!");
NS_ASSERTION(aPO, "Pointer is null!");
int32_t childWebshellCount;
aParentNode->GetChildCount(&childWebshellCount);
if (childWebshellCount > 0) {
for (int32_t i=0;i<childWebshellCount;i++) {
nsCOMPtr<nsIDocShellTreeItem> child;
aParentNode->GetChildAt(i, getter_AddRefs(child));
nsCOMPtr<nsIDocShell> childAsShell(do_QueryInterface(child));
nsCOMPtr<nsIContentViewer> viewer;
childAsShell->GetContentViewer(getter_AddRefs(viewer));
if (viewer) {
nsCOMPtr<nsIContentViewerFile> viewerFile(do_QueryInterface(viewer));
if (viewerFile) {
nsCOMPtr<nsIDocShell> childDocShell(do_QueryInterface(child));
nsCOMPtr<nsIDocShellTreeNode> childNode(do_QueryInterface(child));
nsCOMPtr<nsIDOMDocument> doc = do_GetInterface(childDocShell);
nsPrintObject * po = new nsPrintObject();
po->mParent = aPO;
nsresult rv = po->Init(childDocShell, doc, aPO->mPrintPreview);
if (NS_FAILED(rv))
NS_NOTREACHED("Init failed?");
aPO->mKids.AppendElement(po);
aDocList->AppendElement(po);
BuildDocTree(childNode, aDocList, po);
}
}
}
}
}
//---------------------------------------------------------------------
void
nsPrintEngine::GetDocumentTitleAndURL(nsIDocument* aDoc,
PRUnichar** aTitle,
PRUnichar** aURLStr)
{
NS_ASSERTION(aDoc, "Pointer is null!");
NS_ASSERTION(aTitle, "Pointer is null!");
NS_ASSERTION(aURLStr, "Pointer is null!");
*aTitle = nullptr;
*aURLStr = nullptr;
nsAutoString docTitle;
nsCOMPtr<nsIDOMDocument> doc = do_QueryInterface(aDoc);
doc->GetTitle(docTitle);
if (!docTitle.IsEmpty()) {
*aTitle = ToNewUnicode(docTitle);
}
nsIURI* url = aDoc->GetDocumentURI();
if (!url) return;
nsCOMPtr<nsIURIFixup> urifixup(do_GetService(NS_URIFIXUP_CONTRACTID));
if (!urifixup) return;
nsCOMPtr<nsIURI> exposableURI;
urifixup->CreateExposableURI(url, getter_AddRefs(exposableURI));
if (!exposableURI) return;
nsAutoCString urlCStr;
exposableURI->GetSpec(urlCStr);
nsresult rv;
nsCOMPtr<nsITextToSubURI> textToSubURI =
do_GetService(NS_ITEXTTOSUBURI_CONTRACTID, &rv);
if (NS_FAILED(rv)) return;
nsAutoString unescapedURI;
rv = textToSubURI->UnEscapeURIForUI(NS_LITERAL_CSTRING("UTF-8"),
urlCStr, unescapedURI);
if (NS_FAILED(rv)) return;
*aURLStr = ToNewUnicode(unescapedURI);
}
//---------------------------------------------------------------------
// The walks the PO tree and for each document it walks the content
// tree looking for any content that are sub-shells
//
// It then sets the mContent pointer in the "found" PO object back to the
// the document that contained it.
void
nsPrintEngine::MapContentToWebShells(nsPrintObject* aRootPO,
nsPrintObject* aPO)
{
NS_ASSERTION(aRootPO, "Pointer is null!");
NS_ASSERTION(aPO, "Pointer is null!");
// Recursively walk the content from the root item
// XXX Would be faster to enumerate the subdocuments, although right now
// nsIDocument doesn't expose quite what would be needed.
nsCOMPtr<nsIContentViewer> viewer;
aPO->mDocShell->GetContentViewer(getter_AddRefs(viewer));
if (!viewer) return;
nsCOMPtr<nsIDOMDocument> domDoc;
viewer->GetDOMDocument(getter_AddRefs(domDoc));
nsCOMPtr<nsIDocument> doc = do_QueryInterface(domDoc);
if (!doc) return;
Element* rootElement = doc->GetRootElement();
if (rootElement) {
MapContentForPO(aPO, rootElement);
} else {
NS_WARNING("Null root content on (sub)document.");
}
// Continue recursively walking the chilren of this PO
for (uint32_t i=0;i<aPO->mKids.Length();i++) {
MapContentToWebShells(aRootPO, aPO->mKids[i]);
}
}
//-------------------------------------------------------
// A Frame's sub-doc may contain content or a FrameSet
// When it contains a FrameSet the mFrameType for the PrintObject
// is always set to an eFrame. Which is fine when printing "AsIs"
// but is incorrect when when printing "Each Frame Separately".
// When printing "Each Frame Separately" the Frame really acts like
// a frameset.
//
// This method walks the PO tree and checks to see if the PrintObject is
// an eFrame and has children that are eFrames (meaning it's a Frame containing a FrameSet)
// If so, then the mFrameType need to be changed to eFrameSet
//
// Also note: We only want to call this we are printing "Each Frame Separately"
// when printing "As Is" leave it as an eFrame
void
nsPrintEngine::CheckForChildFrameSets(nsPrintObject* aPO)
{
NS_ASSERTION(aPO, "Pointer is null!");
// Continue recursively walking the chilren of this PO
bool hasChildFrames = false;
for (uint32_t i=0;i<aPO->mKids.Length();i++) {
nsPrintObject* po = aPO->mKids[i];
if (po->mFrameType == eFrame) {
hasChildFrames = true;
CheckForChildFrameSets(po);
}
}
if (hasChildFrames && aPO->mFrameType == eFrame) {
aPO->mFrameType = eFrameSet;
}
}
//---------------------------------------------------------------------
// This method is key to the entire print mechanism.
//
// This "maps" or figures out which sub-doc represents a
// given Frame or IFrame in its parent sub-doc.
//
// So the Mcontent pointer in the child sub-doc points to the
// content in the its parent document, that caused it to be printed.
// This is used later to (after reflow) to find the absolute location
// of the sub-doc on its parent's page frame so it can be
// printed in the correct location.
//
// This method recursvely "walks" the content for a document finding
// all the Frames and IFrames, then sets the "mFrameType" data member
// which tells us what type of PO we have
void
nsPrintEngine::MapContentForPO(nsPrintObject* aPO,
nsIContent* aContent)
{
NS_PRECONDITION(aPO && aContent, "Null argument");
nsIDocument* doc = aContent->GetDocument();
NS_ASSERTION(doc, "Content without a document from a document tree?");
nsIDocument* subDoc = doc->GetSubDocumentFor(aContent);
if (subDoc) {
nsCOMPtr<nsISupports> container = subDoc->GetContainer();
nsCOMPtr<nsIDocShell> docShell(do_QueryInterface(container));
if (docShell) {
nsPrintObject * po = nullptr;
int32_t cnt = aPO->mKids.Length();
for (int32_t i=0;i<cnt;i++) {
nsPrintObject* kid = aPO->mKids.ElementAt(i);
if (kid->mDocument == subDoc) {
po = kid;
break;
}
}
// XXX If a subdocument has no onscreen presentation, there will be no PO
// This is even if there should be a print presentation
if (po) {
nsCOMPtr<nsIDOMHTMLFrameElement> frame(do_QueryInterface(aContent));
// "frame" elements not in a frameset context should be treated
// as iframes
if (frame && po->mParent->mFrameType == eFrameSet) {
po->mFrameType = eFrame;
} else {
// Assume something iframe-like, i.e. iframe, object, or embed
po->mFrameType = eIFrame;
SetPrintAsIs(po, true);
NS_ASSERTION(po->mParent, "The root must be a parent");
po->mParent->mPrintAsIs = true;
}
}
}
}
// walk children content
for (nsIContent* child = aContent->GetFirstChild();
child;
child = child->GetNextSibling()) {
MapContentForPO(aPO, child);
}
}
//---------------------------------------------------------------------
bool
nsPrintEngine::IsThereAnIFrameSelected(nsIDocShell* aDocShell,
nsIDOMWindow* aDOMWin,
bool& aIsParentFrameSet)
{
aIsParentFrameSet = IsParentAFrameSet(aDocShell);
bool iFrameIsSelected = false;
if (mPrt && mPrt->mPrintObject) {
nsPrintObject* po = FindPrintObjectByDOMWin(mPrt->mPrintObject, aDOMWin);
iFrameIsSelected = po && po->mFrameType == eIFrame;
} else {
// First, check to see if we are a frameset
if (!aIsParentFrameSet) {
// Check to see if there is a currenlt focused frame
// if so, it means the selected frame is either the main docshell
// or an IFRAME
if (aDOMWin) {
// Get the main docshell's DOMWin to see if it matches
// the frame that is selected
nsCOMPtr<nsIDOMWindow> domWin = do_GetInterface(aDocShell);
if (domWin != aDOMWin) {
iFrameIsSelected = true; // we have a selected IFRAME
}
}
}
}
return iFrameIsSelected;
}
//---------------------------------------------------------------------
// Recursively sets all the PO items to be printed
// from the given item down into the tree
void
nsPrintEngine::SetPrintPO(nsPrintObject* aPO, bool aPrint)
{
NS_ASSERTION(aPO, "Pointer is null!");
// Set whether to print flag
aPO->mDontPrint = !aPrint;
for (uint32_t i=0;i<aPO->mKids.Length();i++) {
SetPrintPO(aPO->mKids[i], aPrint);
}
}
//---------------------------------------------------------------------
// This will first use a Title and/or URL from the PrintSettings
// if one isn't set then it uses the one from the document
// then if not title is there we will make sure we send something back
// depending on the situation.
void
nsPrintEngine::GetDisplayTitleAndURL(nsPrintObject* aPO,
PRUnichar** aTitle,
PRUnichar** aURLStr,
eDocTitleDefault aDefType)
{
NS_ASSERTION(aPO, "Pointer is null!");
NS_ASSERTION(aTitle, "Pointer is null!");
NS_ASSERTION(aURLStr, "Pointer is null!");
*aTitle = nullptr;
*aURLStr = nullptr;
if (!mPrt)
return;
// First check to see if the PrintSettings has defined an alternate title
// and use that if it did
PRUnichar * docTitleStrPS = nullptr;
PRUnichar * docURLStrPS = nullptr;
if (mPrt->mPrintSettings) {
mPrt->mPrintSettings->GetTitle(&docTitleStrPS);
mPrt->mPrintSettings->GetDocURL(&docURLStrPS);
if (docTitleStrPS && *docTitleStrPS) {
*aTitle = docTitleStrPS;
}
if (docURLStrPS && *docURLStrPS) {
*aURLStr = docURLStrPS;
}
// short circut
if (docTitleStrPS && docURLStrPS) {
return;
}
}
PRUnichar* docTitle;
PRUnichar* docUrl;
GetDocumentTitleAndURL(aPO->mDocument, &docTitle, &docUrl);
if (docUrl) {
if (!docURLStrPS)
*aURLStr = docUrl;
else
nsMemory::Free(docUrl);
}
if (docTitle) {
if (!docTitleStrPS)
*aTitle = docTitle;
else
nsMemory::Free(docTitle);
} else if (!docTitleStrPS) {
switch (aDefType) {
case eDocTitleDefBlank: *aTitle = ToNewUnicode(EmptyString());
break;
case eDocTitleDefURLDoc:
if (*aURLStr) {
*aTitle = NS_strdup(*aURLStr);
} else if (mPrt->mBrandName) {
*aTitle = NS_strdup(mPrt->mBrandName);
}
break;
case eDocTitleDefNone:
// *aTitle defaults to nullptr
break;
}
}
}
//---------------------------------------------------------------------
nsresult nsPrintEngine::DocumentReadyForPrinting()
{
if (mPrt->mPrintFrameType == nsIPrintSettings::kEachFrameSep) {
CheckForChildFrameSets(mPrt->mPrintObject);
}
//
// Send the document to the printer...
//
nsresult rv = SetupToPrintContent();
if (NS_FAILED(rv)) {
// The print job was canceled or there was a problem
// So remove all other documents from the print list
DonePrintingPages(nullptr, rv);
}
return rv;
}
/** ---------------------------------------------------
* Cleans up when an error occurred
*/
nsresult nsPrintEngine::CleanupOnFailure(nsresult aResult, bool aIsPrinting)
{
PR_PL(("**** Failed %s - rv 0x%X", aIsPrinting?"Printing":"Print Preview", aResult));
/* cleanup... */
if (mPagePrintTimer) {
mPagePrintTimer->Stop();
NS_RELEASE(mPagePrintTimer);
}
if (aIsPrinting) {
SetIsPrinting(false);
} else {
SetIsPrintPreview(false);
SetIsCreatingPrintPreview(false);
}
/* cleanup done, let's fire-up an error dialog to notify the user
* what went wrong...
*
* When rv == NS_ERROR_ABORT, it means we want out of the
* print job without displaying any error messages
*/
if (aResult != NS_ERROR_ABORT) {
ShowPrintErrorDialog(aResult, aIsPrinting);
}
FirePrintCompletionEvent();
return aResult;
}
//---------------------------------------------------------------------
void
nsPrintEngine::ShowPrintErrorDialog(nsresult aPrintError, bool aIsPrinting)
{
nsAutoCString stringName;
nsXPIDLString msg, title;
nsresult rv = NS_OK;
switch(aPrintError)
{
#define NS_ERROR_TO_LOCALIZED_PRINT_ERROR_MSG(nserr) case nserr: stringName.AssignLiteral(#nserr); break;
NS_ERROR_TO_LOCALIZED_PRINT_ERROR_MSG(NS_ERROR_GFX_PRINTER_NO_PRINTER_AVAILABLE)
NS_ERROR_TO_LOCALIZED_PRINT_ERROR_MSG(NS_ERROR_GFX_PRINTER_NAME_NOT_FOUND)
NS_ERROR_TO_LOCALIZED_PRINT_ERROR_MSG(NS_ERROR_GFX_PRINTER_COULD_NOT_OPEN_FILE)
NS_ERROR_TO_LOCALIZED_PRINT_ERROR_MSG(NS_ERROR_GFX_PRINTER_STARTDOC)
NS_ERROR_TO_LOCALIZED_PRINT_ERROR_MSG(NS_ERROR_GFX_PRINTER_ENDDOC)
NS_ERROR_TO_LOCALIZED_PRINT_ERROR_MSG(NS_ERROR_GFX_PRINTER_STARTPAGE)
NS_ERROR_TO_LOCALIZED_PRINT_ERROR_MSG(NS_ERROR_GFX_PRINTER_DOC_IS_BUSY)
NS_ERROR_TO_LOCALIZED_PRINT_ERROR_MSG(NS_ERROR_GFX_PRINTER_NO_XUL) // bug 136185 / bug 240490
NS_ERROR_TO_LOCALIZED_PRINT_ERROR_MSG(NS_ERROR_ABORT)
NS_ERROR_TO_LOCALIZED_PRINT_ERROR_MSG(NS_ERROR_NOT_AVAILABLE)
NS_ERROR_TO_LOCALIZED_PRINT_ERROR_MSG(NS_ERROR_NOT_IMPLEMENTED)
NS_ERROR_TO_LOCALIZED_PRINT_ERROR_MSG(NS_ERROR_OUT_OF_MEMORY)
NS_ERROR_TO_LOCALIZED_PRINT_ERROR_MSG(NS_ERROR_UNEXPECTED)
default:
NS_ERROR_TO_LOCALIZED_PRINT_ERROR_MSG(NS_ERROR_FAILURE)
#undef NS_ERROR_TO_LOCALIZED_PRINT_ERROR_MSG
}
if (!aIsPrinting) {
// Try first with _PP suffix.
stringName.AppendLiteral("_PP");
rv = nsContentUtils::GetLocalizedString(
nsContentUtils::ePRINTING_PROPERTIES, stringName.get(), msg);
if (NS_FAILED(rv)) {
stringName.Truncate(stringName.Length() - 3);
}
}
if (aIsPrinting || NS_FAILED(rv)) {
rv = nsContentUtils::GetLocalizedString(
nsContentUtils::ePRINTING_PROPERTIES, stringName.get(), msg);
}
if (NS_FAILED(rv)) {
return;
}
rv = nsContentUtils::GetLocalizedString(
nsContentUtils::ePRINTING_PROPERTIES,
aIsPrinting ? "print_error_dialog_title"
: "printpreview_error_dialog_title",
title);
if (NS_FAILED(rv)) {
return;
}
nsCOMPtr<nsIWindowWatcher> wwatch =
do_GetService(NS_WINDOWWATCHER_CONTRACTID, &rv);
if (NS_FAILED(rv)) {
return;
}
nsCOMPtr<nsIDOMWindow> active;
wwatch->GetActiveWindow(getter_AddRefs(active));
nsCOMPtr<nsIPrompt> dialog;
/* |GetNewPrompter| allows that |active| is |nullptr|
* (see bug 234982 ("nsPrintEngine::ShowPrintErrorDialog() fails in many cases")) */
wwatch->GetNewPrompter(active, getter_AddRefs(dialog));
if (!dialog) {
return;
}
dialog->Alert(title.get(), msg.get());
}
//-----------------------------------------------------------------
//-- Section: Reflow Methods
//-----------------------------------------------------------------
nsresult
nsPrintEngine::ReconstructAndReflow(bool doSetPixelScale)
{
#if (defined(XP_WIN) || defined(XP_OS2)) && defined(EXTENDED_DEBUG_PRINTING)
// We need to clear all the output files here
// because they will be re-created with second reflow of the docs
if (kPrintingLogMod && kPrintingLogMod->level == DUMP_LAYOUT_LEVEL) {
RemoveFilesInDir(".\\");
gDumpFileNameCnt = 0;
gDumpLOFileNameCnt = 0;
}
#endif
for (uint32_t i = 0; i < mPrt->mPrintDocList.Length(); ++i) {
nsPrintObject* po = mPrt->mPrintDocList.ElementAt(i);
NS_ASSERTION(po, "nsPrintObject can't be null!");
if (po->mDontPrint || po->mInvisible) {
continue;
}
UpdateZoomRatio(po, doSetPixelScale);
po->mPresContext->SetPageScale(po->mZoomRatio);
// Calculate scale factor from printer to screen
float printDPI = float(mPrt->mPrintDC->AppUnitsPerCSSInch()) /
float(mPrt->mPrintDC->AppUnitsPerDevPixel());
po->mPresContext->SetPrintPreviewScale(mScreenDPI / printDPI);
po->mPresShell->ReconstructFrames();
// For all views except the first one, setup the root view.
// ??? Can there be multiple po for the top-level-document?
bool documentIsTopLevel = true;
if (i != 0) {
nsSize adjSize;
bool doReturn;
nsresult rv = SetRootView(po, doReturn, documentIsTopLevel, adjSize);
MOZ_ASSERT(!documentIsTopLevel, "How could this happen?");
if (NS_FAILED(rv) || doReturn) {
return rv;
}
}
po->mPresShell->FlushPendingNotifications(Flush_Layout);
nsresult rv = UpdateSelectionAndShrinkPrintObject(po, documentIsTopLevel);
NS_ENSURE_SUCCESS(rv, rv);
}
return NS_OK;
}
//-------------------------------------------------------
nsresult
nsPrintEngine::SetupToPrintContent()
{
nsresult rv;
bool didReconstruction = false;
// If some new content got loaded since the initial reflow rebuild
// everything.
if (mDidLoadDataForPrinting) {
rv = ReconstructAndReflow(DoSetPixelScale());
didReconstruction = true;
NS_ENSURE_SUCCESS(rv, rv);
}
// Here is where we figure out if extra reflow for shrinking the content
// is required.
// But skip this step if we are in PrintPreview
bool ppIsShrinkToFit = mPrtPreview && mPrtPreview->mShrinkToFit;
if (mPrt->mShrinkToFit && !ppIsShrinkToFit) {
// Now look for the PO that has the smallest percent for shrink to fit
if (mPrt->mPrintDocList.Length() > 1 && mPrt->mPrintObject->mFrameType == eFrameSet) {
nsPrintObject* smallestPO = FindSmallestSTF();
NS_ASSERTION(smallestPO, "There must always be an XMost PO!");
if (smallestPO) {
// Calc the shrinkage based on the entire content area
mPrt->mShrinkRatio = smallestPO->mShrinkRatio;
}
} else {
// Single document so use the Shrink as calculated for the PO
mPrt->mShrinkRatio = mPrt->mPrintObject->mShrinkRatio;
}
if (mPrt->mShrinkRatio < 0.998f) {
rv = ReconstructAndReflow(true);
didReconstruction = true;
NS_ENSURE_SUCCESS(rv, rv);
}
#ifdef PR_LOGGING
float calcRatio = 0.0f;
if (mPrt->mPrintDocList.Length() > 1 && mPrt->mPrintObject->mFrameType == eFrameSet) {
nsPrintObject* smallestPO = FindSmallestSTF();
NS_ASSERTION(smallestPO, "There must always be an XMost PO!");
if (smallestPO) {
// Calc the shrinkage based on the entire content area
calcRatio = smallestPO->mShrinkRatio;
}
} else {
// Single document so use the Shrink as calculated for the PO
calcRatio = mPrt->mPrintObject->mShrinkRatio;
}
PR_PL(("**************************************************************************\n"));
PR_PL(("STF Ratio is: %8.5f Effective Ratio: %8.5f Diff: %8.5f\n", mPrt->mShrinkRatio, calcRatio, mPrt->mShrinkRatio-calcRatio));
PR_PL(("**************************************************************************\n"));
#endif
}
// If the frames got reconstructed and reflowed the number of pages might
// has changed.
if (didReconstruction) {
FirePrintPreviewUpdateEvent();
}
DUMP_DOC_LIST(("\nAfter Reflow------------------------------------------"));
PR_PL(("\n"));
PR_PL(("-------------------------------------------------------\n"));
PR_PL(("\n"));
CalcNumPrintablePages(mPrt->mNumPrintablePages);
PR_PL(("--- Printing %d pages\n", mPrt->mNumPrintablePages));
DUMP_DOC_TREELAYOUT;
// Print listener setup...
if (mPrt != nullptr) {
mPrt->OnStartPrinting();
}
PRUnichar* fileName = nullptr;
// check to see if we are printing to a file
bool isPrintToFile = false;
mPrt->mPrintSettings->GetPrintToFile(&isPrintToFile);
if (isPrintToFile) {
// On some platforms The BeginDocument needs to know the name of the file
// and it uses the PrintService to get it, so we need to set it into the PrintService here
mPrt->mPrintSettings->GetToFileName(&fileName);
}
PRUnichar * docTitleStr;
PRUnichar * docURLStr;
GetDisplayTitleAndURL(mPrt->mPrintObject, &docTitleStr, &docURLStr, eDocTitleDefURLDoc);
int32_t startPage = 1;
int32_t endPage = mPrt->mNumPrintablePages;
int16_t printRangeType = nsIPrintSettings::kRangeAllPages;
mPrt->mPrintSettings->GetPrintRange(&printRangeType);
if (printRangeType == nsIPrintSettings::kRangeSpecifiedPageRange) {
mPrt->mPrintSettings->GetStartPageRange(&startPage);
mPrt->mPrintSettings->GetEndPageRange(&endPage);
if (endPage > mPrt->mNumPrintablePages) {
endPage = mPrt->mNumPrintablePages;
}
}
rv = NS_OK;
// BeginDocument may pass back a FAILURE code
// i.e. On Windows, if you are printing to a file and hit "Cancel"
// to the "File Name" dialog, this comes back as an error
// Don't start printing when regression test are executed
if (!mPrt->mDebugFilePtr && mIsDoingPrinting) {
rv = mPrt->mPrintDC->BeginDocument(docTitleStr, fileName, startPage, endPage);
}
if (mIsCreatingPrintPreview) {
// Print Preview -- Pass ownership of docTitleStr and docURLStr
// to the pageSequenceFrame, to be displayed in the header
nsIPageSequenceFrame *seqFrame = mPrt->mPrintObject->mPresShell->GetPageSequenceFrame();
if (seqFrame) {
seqFrame->StartPrint(mPrt->mPrintObject->mPresContext,
mPrt->mPrintSettings, docTitleStr, docURLStr);
docTitleStr = nullptr;
docURLStr = nullptr;
}
}
if (docTitleStr) nsMemory::Free(docTitleStr);
if (docURLStr) nsMemory::Free(docURLStr);
PR_PL(("****************** Begin Document ************************\n"));
NS_ENSURE_SUCCESS(rv, rv);
// This will print the docshell document
// when it completes asynchronously in the DonePrintingPages method
// it will check to see if there are more docshells to be printed and
// then PrintDocContent will be called again.
if (mIsDoingPrinting) {
PrintDocContent(mPrt->mPrintObject, rv); // ignore return value
}
return rv;
}
//-------------------------------------------------------
// Recursively reflow each sub-doc and then calc
// all the frame locations of the sub-docs
nsresult
nsPrintEngine::ReflowDocList(nsPrintObject* aPO, bool aSetPixelScale)
{
NS_ENSURE_ARG_POINTER(aPO);
// Check to see if the subdocument's element has been hidden by the parent document
if (aPO->mParent && aPO->mParent->mPresShell) {
nsIFrame* frame = aPO->mContent ? aPO->mContent->GetPrimaryFrame() : nullptr;
if (!frame || !frame->StyleVisibility()->IsVisible()) {
SetPrintPO(aPO, false);
aPO->mInvisible = true;
return NS_OK;
}
}
UpdateZoomRatio(aPO, aSetPixelScale);
nsresult rv;
// Reflow the PO
rv = ReflowPrintObject(aPO);
NS_ENSURE_SUCCESS(rv, rv);
int32_t cnt = aPO->mKids.Length();
for (int32_t i=0;i<cnt;i++) {
rv = ReflowDocList(aPO->mKids[i], aSetPixelScale);
NS_ENSURE_SUCCESS(rv, rv);
}
return NS_OK;
}
void
nsPrintEngine::FirePrintPreviewUpdateEvent()
{
// Dispatch the event only while in PrintPreview. When printing, there is no
// listener bound to this event and therefore no need to dispatch it.
if (mIsDoingPrintPreview && !mIsDoingPrinting) {
nsCOMPtr<nsIContentViewer> cv = do_QueryInterface(mDocViewerPrint);
(new nsAsyncDOMEvent(
cv->GetDocument(), NS_LITERAL_STRING("printPreviewUpdate"), true, true)
)->RunDOMEventWhenSafe();
}
}
nsresult
nsPrintEngine::InitPrintDocConstruction(bool aHandleError)
{
nsresult rv;
rv = ReflowDocList(mPrt->mPrintObject, DoSetPixelScale());
NS_ENSURE_SUCCESS(rv, rv);
FirePrintPreviewUpdateEvent();
if (mLoadCounter == 0) {
AfterNetworkPrint(aHandleError);
}
return rv;
}
nsresult
nsPrintEngine::AfterNetworkPrint(bool aHandleError)
{
nsCOMPtr<nsIWebProgress> webProgress = do_QueryInterface(mPrt->mPrintObject->mDocShell);
webProgress->RemoveProgressListener(
static_cast<nsIWebProgressListener*>(this));
nsresult rv;
if (mIsDoingPrinting) {
rv = DocumentReadyForPrinting();
} else {
rv = FinishPrintPreview();
}
/* cleaup on failure + notify user */
if (aHandleError && NS_FAILED(rv)) {
CleanupOnFailure(rv, !mIsDoingPrinting);
}
return rv;
}
////////////////////////////////////////////////////////////////////////////////
// nsIWebProgressListener
NS_IMETHODIMP
nsPrintEngine::OnStateChange(nsIWebProgress* aWebProgress,
nsIRequest* aRequest,
uint32_t aStateFlags,
nsresult aStatus)
{
nsAutoCString name;
aRequest->GetName(name);
if (name.Equals("about:document-onload-blocker")) {
return NS_OK;
}
if (aStateFlags & STATE_START) {
nsCOMPtr<nsIChannel> channel = do_QueryInterface(aRequest);
++mLoadCounter;
} else if (aStateFlags & STATE_STOP) {
mDidLoadDataForPrinting = true;
--mLoadCounter;
// If all resources are loaded, then do a small timeout and if there
// are still no new requests, then another reflow.
if (mLoadCounter == 0) {
AfterNetworkPrint(true);
}
}
return NS_OK;
}
NS_IMETHODIMP
nsPrintEngine::OnProgressChange(nsIWebProgress* aWebProgress,
nsIRequest* aRequest,
int32_t aCurSelfProgress,
int32_t aMaxSelfProgress,
int32_t aCurTotalProgress,
int32_t aMaxTotalProgress)
{
NS_NOTREACHED("notification excluded in AddProgressListener(...)");
return NS_OK;
}
NS_IMETHODIMP
nsPrintEngine::OnLocationChange(nsIWebProgress* aWebProgress,
nsIRequest* aRequest,
nsIURI* aLocation,
uint32_t aFlags)
{
NS_NOTREACHED("notification excluded in AddProgressListener(...)");
return NS_OK;
}
NS_IMETHODIMP
nsPrintEngine::OnStatusChange(nsIWebProgress *aWebProgress,
nsIRequest *aRequest,
nsresult aStatus,
const PRUnichar *aMessage)
{
NS_NOTREACHED("notification excluded in AddProgressListener(...)");
return NS_OK;
}
NS_IMETHODIMP
nsPrintEngine::OnSecurityChange(nsIWebProgress *aWebProgress,
nsIRequest *aRequest,
uint32_t aState)
{
NS_NOTREACHED("notification excluded in AddProgressListener(...)");
return NS_OK;
}
//-------------------------------------------------------
void
nsPrintEngine::UpdateZoomRatio(nsPrintObject* aPO, bool aSetPixelScale)
{
// Here is where we set the shrinkage value into the DC
// and this is what actually makes it shrink
if (aSetPixelScale && aPO->mFrameType != eIFrame) {
float ratio;
if (mPrt->mPrintFrameType == nsIPrintSettings::kFramesAsIs || mPrt->mPrintFrameType == nsIPrintSettings::kNoFrames) {
ratio = mPrt->mShrinkRatio - 0.005f; // round down
} else {
ratio = aPO->mShrinkRatio - 0.005f; // round down
}
aPO->mZoomRatio = ratio;
} else if (!mPrt->mShrinkToFit) {
double scaling;
mPrt->mPrintSettings->GetScaling(&scaling);
aPO->mZoomRatio = float(scaling);
}
}
nsresult
nsPrintEngine::UpdateSelectionAndShrinkPrintObject(nsPrintObject* aPO,
bool aDocumentIsTopLevel)
{
nsCOMPtr<nsIPresShell> displayShell = aPO->mDocShell->GetPresShell();
// Transfer Selection Ranges to the new Print PresShell
nsRefPtr<Selection> selection, selectionPS;
// It's okay if there is no display shell, just skip copying the selection
if (displayShell) {
selection = displayShell->GetCurrentSelection(nsISelectionController::SELECTION_NORMAL);
}
selectionPS = aPO->mPresShell->GetCurrentSelection(nsISelectionController::SELECTION_NORMAL);
// Reset all existing selection ranges that might have been added by calling
// this function before.
if (selectionPS) {
selectionPS->RemoveAllRanges();
}
if (selection && selectionPS) {
int32_t cnt = selection->GetRangeCount();
int32_t inx;
for (inx = 0; inx < cnt; ++inx) {
selectionPS->AddRange(selection->GetRangeAt(inx));
}
}
// If we are trying to shrink the contents to fit on the page
// we must first locate the "pageContent" frame
// Then we walk the frame tree and look for the "xmost" frame
// this is the frame where the right-hand side of the frame extends
// the furthest
if (mPrt->mShrinkToFit && aDocumentIsTopLevel) {
nsIPageSequenceFrame* pageSequence = aPO->mPresShell->GetPageSequenceFrame();
NS_ENSURE_STATE(pageSequence);
pageSequence->GetSTFPercent(aPO->mShrinkRatio);
}
return NS_OK;
}
bool
nsPrintEngine::DoSetPixelScale()
{
// This is an Optimization
// If we are in PP then we already know all the shrinkage information
// so just transfer it to the PrintData and we will skip the extra shrinkage reflow
//
// doSetPixelScale tells Reflow whether to set the shrinkage value into the DC
// The first time we do not want to do this, the second time through we do
bool doSetPixelScale = false;
bool ppIsShrinkToFit = mPrtPreview && mPrtPreview->mShrinkToFit;
if (ppIsShrinkToFit) {
mPrt->mShrinkRatio = mPrtPreview->mShrinkRatio;
doSetPixelScale = true;
}
return doSetPixelScale;
}
nsView*
nsPrintEngine::GetParentViewForRoot()
{
if (mIsCreatingPrintPreview) {
nsCOMPtr<nsIContentViewer> cv = do_QueryInterface(mDocViewerPrint);
if (cv) {
return cv->FindContainerView();
}
}
return nullptr;
}
nsresult
nsPrintEngine::SetRootView(
nsPrintObject* aPO,
bool& doReturn,
bool& documentIsTopLevel,
nsSize& adjSize
)
{
bool canCreateScrollbars = true;
nsView* rootView;
nsView* parentView = nullptr;
doReturn = false;
if (aPO->mParent && aPO->mParent->IsPrintable()) {
nsIFrame* frame = aPO->mContent ? aPO->mContent->GetPrimaryFrame() : nullptr;
// Without a frame, this document can't be displayed; therefore, there is no
// point to reflowing it
if (!frame) {
SetPrintPO(aPO, false);
doReturn = true;
return NS_OK;
}
//XXX If printing supported printing document hierarchies with non-constant
// zoom this would be wrong as we use the same mPrt->mPrintDC for all
// subdocuments.
adjSize = frame->GetContentRect().Size();
documentIsTopLevel = false;
// presshell exists because parent is printable
// the top nsPrintObject's widget will always have scrollbars
if (frame && frame->GetType() == nsGkAtoms::subDocumentFrame) {
nsView* view = frame->GetView();
NS_ENSURE_TRUE(view, NS_ERROR_FAILURE);
view = view->GetFirstChild();
NS_ENSURE_TRUE(view, NS_ERROR_FAILURE);
parentView = view;
canCreateScrollbars = false;
}
} else {
nscoord pageWidth, pageHeight;
mPrt->mPrintDC->GetDeviceSurfaceDimensions(pageWidth, pageHeight);
adjSize = nsSize(pageWidth, pageHeight);
documentIsTopLevel = true;
parentView = GetParentViewForRoot();
}
if (aPO->mViewManager->GetRootView()) {
// Reuse the root view that is already on the root frame.
rootView = aPO->mViewManager->GetRootView();
// Remove it from its existing parent if necessary
aPO->mViewManager->RemoveChild(rootView);
rootView->SetParent(parentView);
} else {
// Create a child window of the parent that is our "root view/window"
nsRect tbounds = nsRect(nsPoint(0, 0), adjSize);
rootView = aPO->mViewManager->CreateView(tbounds, parentView);
NS_ENSURE_TRUE(rootView, NS_ERROR_OUT_OF_MEMORY);
}
if (mIsCreatingPrintPreview && documentIsTopLevel) {
aPO->mPresContext->SetPaginatedScrolling(canCreateScrollbars);
}
// Setup hierarchical relationship in view manager
aPO->mViewManager->SetRootView(rootView);
return NS_OK;
}
// Reflow a nsPrintObject
nsresult
nsPrintEngine::ReflowPrintObject(nsPrintObject * aPO)
{
NS_ENSURE_STATE(aPO);
if (!aPO->IsPrintable()) {
return NS_OK;
}
NS_ASSERTION(!aPO->mPresContext, "Recreating prescontext");
// create the PresContext
nsPresContext::nsPresContextType type =
mIsCreatingPrintPreview ? nsPresContext::eContext_PrintPreview:
nsPresContext::eContext_Print;
nsView* parentView =
aPO->mParent && aPO->mParent->IsPrintable() ? nullptr : GetParentViewForRoot();
aPO->mPresContext = parentView ?
new nsPresContext(aPO->mDocument, type) :
new nsRootPresContext(aPO->mDocument, type);
NS_ENSURE_TRUE(aPO->mPresContext, NS_ERROR_OUT_OF_MEMORY);
aPO->mPresContext->SetPrintSettings(mPrt->mPrintSettings);
// set the presentation context to the value in the print settings
bool printBGColors;
mPrt->mPrintSettings->GetPrintBGColors(&printBGColors);
aPO->mPresContext->SetBackgroundColorDraw(printBGColors);
mPrt->mPrintSettings->GetPrintBGImages(&printBGColors);
aPO->mPresContext->SetBackgroundImageDraw(printBGColors);
// init it with the DC
nsresult rv = aPO->mPresContext->Init(mPrt->mPrintDC);
NS_ENSURE_SUCCESS(rv, rv);
aPO->mViewManager = new nsViewManager();
rv = aPO->mViewManager->Init(mPrt->mPrintDC);
NS_ENSURE_SUCCESS(rv,rv);
nsStyleSet* styleSet;
rv = mDocViewerPrint->CreateStyleSet(aPO->mDocument, &styleSet);
NS_ENSURE_SUCCESS(rv, rv);
rv = aPO->mDocument->CreateShell(aPO->mPresContext, aPO->mViewManager,
styleSet, getter_AddRefs(aPO->mPresShell));
if (NS_FAILED(rv)) {
delete styleSet;
return rv;
}
styleSet->EndUpdate();
// The pres shell now owns the style set object.
bool doReturn = false;;
bool documentIsTopLevel = false;
nsSize adjSize;
rv = SetRootView(aPO, doReturn, documentIsTopLevel, adjSize);
if (NS_FAILED(rv) || doReturn) {
return rv;
}
PR_PL(("In DV::ReflowPrintObject PO: %p pS: %p (%9s) Setting w,h to %d,%d\n", aPO, aPO->mPresShell.get(),
gFrameTypesStr[aPO->mFrameType], adjSize.width, adjSize.height));
// This docshell stuff is weird; will go away when we stop having multiple
// presentations per document
nsCOMPtr<nsISupports> supps(do_QueryInterface(aPO->mDocShell));
aPO->mPresContext->SetContainer(supps);
aPO->mPresShell->BeginObservingDocument();
aPO->mPresContext->SetPageSize(adjSize);
aPO->mPresContext->SetIsRootPaginatedDocument(documentIsTopLevel);
aPO->mPresContext->SetPageScale(aPO->mZoomRatio);
// Calculate scale factor from printer to screen
float printDPI = float(mPrt->mPrintDC->AppUnitsPerCSSInch()) /
float(mPrt->mPrintDC->AppUnitsPerDevPixel());
aPO->mPresContext->SetPrintPreviewScale(mScreenDPI / printDPI);
if (mIsCreatingPrintPreview && documentIsTopLevel) {
mDocViewerPrint->SetPrintPreviewPresentation(aPO->mViewManager,
aPO->mPresContext,
aPO->mPresShell);
}
rv = aPO->mPresShell->Initialize(adjSize.width, adjSize.height);
NS_ENSURE_SUCCESS(rv, rv);
NS_ASSERTION(aPO->mPresShell, "Presshell should still be here");
// Process the reflow event Initialize posted
aPO->mPresShell->FlushPendingNotifications(Flush_Layout);
rv = UpdateSelectionAndShrinkPrintObject(aPO, documentIsTopLevel);
NS_ENSURE_SUCCESS(rv, rv);
#ifdef EXTENDED_DEBUG_PRINTING
if (kPrintingLogMod && kPrintingLogMod->level == DUMP_LAYOUT_LEVEL) {
char * docStr;
char * urlStr;
GetDocTitleAndURL(aPO, docStr, urlStr);
char filename[256];
sprintf(filename, "print_dump_%d.txt", gDumpFileNameCnt++);
// Dump all the frames and view to a a file
FILE * fd = fopen(filename, "w");
if (fd) {
nsIFrame *theRootFrame =
aPO->mPresShell->FrameManager()->GetRootFrame();
fprintf(fd, "Title: %s\n", docStr?docStr:"");
fprintf(fd, "URL: %s\n", urlStr?urlStr:"");
fprintf(fd, "--------------- Frames ----------------\n");
nsRefPtr<nsRenderingContext> renderingContext;
mPrt->mPrintDocDC->CreateRenderingContext(*getter_AddRefs(renderingContext));
RootFrameList(aPO->mPresContext, fd, 0);
//DumpFrames(fd, aPO->mPresContext, renderingContext, theRootFrame, 0);
fprintf(fd, "---------------------------------------\n\n");
fprintf(fd, "--------------- Views From Root Frame----------------\n");
nsView* v = theRootFrame->GetView();
if (v) {
v->List(fd);
} else {
printf("View is null!\n");
}
if (docShell) {
fprintf(fd, "--------------- All Views ----------------\n");
DumpViews(docShell, fd);
fprintf(fd, "---------------------------------------\n\n");
}
fclose(fd);
}
if (docStr) nsMemory::Free(docStr);
if (urlStr) nsMemory::Free(urlStr);
}
#endif
return NS_OK;
}
//-------------------------------------------------------
// Figure out how many documents and how many total pages we are printing
void
nsPrintEngine::CalcNumPrintablePages(int32_t& aNumPages)
{
aNumPages = 0;
// Count the number of printable documents
// and printable pages
for (uint32_t i=0; i<mPrt->mPrintDocList.Length(); i++) {
nsPrintObject* po = mPrt->mPrintDocList.ElementAt(i);
NS_ASSERTION(po, "nsPrintObject can't be null!");
if (po->mPresContext && po->mPresContext->IsRootPaginatedDocument()) {
nsIPageSequenceFrame* pageSequence = po->mPresShell->GetPageSequenceFrame();
nsIFrame * seqFrame = do_QueryFrame(pageSequence);
if (seqFrame) {
nsIFrame* frame = seqFrame->GetFirstPrincipalChild();
while (frame) {
aNumPages++;
frame = frame->GetNextSibling();
}
}
}
}
}
//-----------------------------------------------------------------
//-- Done: Reflow Methods
//-----------------------------------------------------------------
//-----------------------------------------------------------------
//-- Section: Printing Methods
//-----------------------------------------------------------------
//-------------------------------------------------------
// Called for each DocShell that needs to be printed
bool
nsPrintEngine::PrintDocContent(nsPrintObject* aPO, nsresult& aStatus)
{
NS_ASSERTION(aPO, "Pointer is null!");
aStatus = NS_OK;
if (!aPO->mHasBeenPrinted && aPO->IsPrintable()) {
aStatus = DoPrint(aPO);
return true;
}
// If |aPO->mPrintAsIs| and |aPO->mHasBeenPrinted| are true,
// the kids frames are already processed in |PrintPage|.
if (!aPO->mInvisible && !(aPO->mPrintAsIs && aPO->mHasBeenPrinted)) {
for (uint32_t i=0;i<aPO->mKids.Length();i++) {
nsPrintObject* po = aPO->mKids[i];
bool printed = PrintDocContent(po, aStatus);
if (printed || NS_FAILED(aStatus)) {
return true;
}
}
}
return false;
}
static already_AddRefed<nsIDOMNode>
GetEqualNodeInCloneTree(nsIDOMNode* aNode, nsIDocument* aDoc)
{
nsCOMPtr<nsIContent> content = do_QueryInterface(aNode);
// Selections in anonymous subtrees aren't supported.
if (content && content->IsInAnonymousSubtree()) {
return nullptr;
}
nsCOMPtr<nsINode> node = do_QueryInterface(aNode);
NS_ENSURE_TRUE(node, nullptr);
nsTArray<int32_t> indexArray;
nsINode* current = node;
NS_ENSURE_TRUE(current, nullptr);
while (current) {
nsINode* parent = current->GetParentNode();
if (!parent) {
break;
}
int32_t index = parent->IndexOf(current);
NS_ENSURE_TRUE(index >= 0, nullptr);
indexArray.AppendElement(index);
current = parent;
}
NS_ENSURE_TRUE(current->IsNodeOfType(nsINode::eDOCUMENT), nullptr);
current = aDoc;
for (int32_t i = indexArray.Length() - 1; i >= 0; --i) {
current = current->GetChildAt(indexArray[i]);
NS_ENSURE_TRUE(current, nullptr);
}
nsCOMPtr<nsIDOMNode> result = do_QueryInterface(current);
return result.forget();
}
static void
CloneRangeToSelection(nsRange* aRange, nsIDocument* aDoc,
Selection* aSelection)
{
if (aRange->Collapsed()) {
return;
}
nsCOMPtr<nsIDOMNode> startContainer, endContainer;
aRange->GetStartContainer(getter_AddRefs(startContainer));
int32_t startOffset = aRange->StartOffset();
aRange->GetEndContainer(getter_AddRefs(endContainer));
int32_t endOffset = aRange->EndOffset();
NS_ENSURE_TRUE_VOID(startContainer && endContainer);
nsCOMPtr<nsIDOMNode> newStart = GetEqualNodeInCloneTree(startContainer, aDoc);
nsCOMPtr<nsIDOMNode> newEnd = GetEqualNodeInCloneTree(endContainer, aDoc);
NS_ENSURE_TRUE_VOID(newStart && newEnd);
nsRefPtr<nsRange> range = new nsRange();
nsresult rv = range->SetStart(newStart, startOffset);
NS_ENSURE_SUCCESS_VOID(rv);
rv = range->SetEnd(newEnd, endOffset);
NS_ENSURE_SUCCESS_VOID(rv);
aSelection->AddRange(range);
}
static nsresult CloneSelection(nsIDocument* aOrigDoc, nsIDocument* aDoc)
{
nsIPresShell* origShell = aOrigDoc->GetShell();
nsIPresShell* shell = aDoc->GetShell();
NS_ENSURE_STATE(origShell && shell);
nsRefPtr<Selection> origSelection =
origShell->GetCurrentSelection(nsISelectionController::SELECTION_NORMAL);
nsRefPtr<Selection> selection =
shell->GetCurrentSelection(nsISelectionController::SELECTION_NORMAL);
NS_ENSURE_STATE(origSelection && selection);
int32_t rangeCount = origSelection->GetRangeCount();
for (int32_t i = 0; i < rangeCount; ++i) {
CloneRangeToSelection(origSelection->GetRangeAt(i), aDoc, selection);
}
return NS_OK;
}
//-------------------------------------------------------
nsresult
nsPrintEngine::DoPrint(nsPrintObject * aPO)
{
PR_PL(("\n"));
PR_PL(("**************************** %s ****************************\n", gFrameTypesStr[aPO->mFrameType]));
PR_PL(("****** In DV::DoPrint PO: %p \n", aPO));
nsIPresShell* poPresShell = aPO->mPresShell;
nsPresContext* poPresContext = aPO->mPresContext;
NS_ASSERTION(poPresContext, "PrintObject has not been reflowed");
NS_ASSERTION(poPresContext->Type() != nsPresContext::eContext_PrintPreview,
"How did this context end up here?");
if (mPrt->mPrintProgressParams) {
SetDocAndURLIntoProgress(aPO, mPrt->mPrintProgressParams);
}
{
int16_t printRangeType = nsIPrintSettings::kRangeAllPages;
nsresult rv;
if (mPrt->mPrintSettings != nullptr) {
mPrt->mPrintSettings->GetPrintRange(&printRangeType);
}
// Ask the page sequence frame to print all the pages
nsIPageSequenceFrame* pageSequence = poPresShell->GetPageSequenceFrame();
NS_ASSERTION(nullptr != pageSequence, "no page sequence frame");
// We are done preparing for printing, so we can turn this off
mPrt->mPreparingForPrint = false;
// mPrt->mDebugFilePtr this is onlu non-null when compiled for debugging
if (nullptr != mPrt->mDebugFilePtr) {
#ifdef DEBUG
// output the regression test
nsIFrame* root = poPresShell->FrameManager()->GetRootFrame();
root->DumpRegressionData(poPresContext, mPrt->mDebugFilePtr, 0);
fclose(mPrt->mDebugFilePtr);
SetIsPrinting(false);
#endif
} else {
#ifdef EXTENDED_DEBUG_PRINTING
nsIFrame* rootFrame = poPresShell->FrameManager()->GetRootFrame();
if (aPO->IsPrintable()) {
char * docStr;
char * urlStr;
GetDocTitleAndURL(aPO, docStr, urlStr);
DumpLayoutData(docStr, urlStr, poPresContext, mPrt->mPrintDocDC, rootFrame, docShell, nullptr);
if (docStr) nsMemory::Free(docStr);
if (urlStr) nsMemory::Free(urlStr);
}
#endif
if (!mPrt->mPrintSettings) {
// not sure what to do here!
SetIsPrinting(false);
return NS_ERROR_FAILURE;
}
PRUnichar * docTitleStr = nullptr;
PRUnichar * docURLStr = nullptr;
GetDisplayTitleAndURL(aPO, &docTitleStr, &docURLStr, eDocTitleDefBlank);
if (nsIPrintSettings::kRangeSelection == printRangeType) {
CloneSelection(aPO->mDocument->GetOriginalDocument(), aPO->mDocument);
poPresContext->SetIsRenderingOnlySelection(true);
// temporarily creating rendering context
// which is needed to find the selection frames
nsRefPtr<nsRenderingContext> rc;
mPrt->mPrintDC->CreateRenderingContext(*getter_AddRefs(rc));
// find the starting and ending page numbers
// via the selection
nsIFrame* startFrame;
nsIFrame* endFrame;
int32_t startPageNum;
int32_t endPageNum;
nsRect startRect;
nsRect endRect;
nsRefPtr<Selection> selectionPS =
poPresShell->GetCurrentSelection(nsISelectionController::SELECTION_NORMAL);
rv = GetPageRangeForSelection(poPresShell, poPresContext, *rc, selectionPS, pageSequence,
&startFrame, startPageNum, startRect,
&endFrame, endPageNum, endRect);
if (NS_SUCCEEDED(rv)) {
mPrt->mPrintSettings->SetStartPageRange(startPageNum);
mPrt->mPrintSettings->SetEndPageRange(endPageNum);
nsIntMargin marginTwips(0,0,0,0);
nsIntMargin unwrtMarginTwips(0,0,0,0);
mPrt->mPrintSettings->GetMarginInTwips(marginTwips);
mPrt->mPrintSettings->GetUnwriteableMarginInTwips(unwrtMarginTwips);
nsMargin totalMargin = poPresContext->CSSTwipsToAppUnits(marginTwips +
unwrtMarginTwips);
if (startPageNum == endPageNum) {
startRect.y -= totalMargin.top;
endRect.y -= totalMargin.top;
// Clip out selection regions above the top of the first page
if (startRect.y < 0) {
// Reduce height to be the height of the positive-territory
// region of original rect
startRect.height = std::max(0, startRect.YMost());
startRect.y = 0;
}
if (endRect.y < 0) {
// Reduce height to be the height of the positive-territory
// region of original rect
endRect.height = std::max(0, endRect.YMost());
endRect.y = 0;
}
NS_ASSERTION(endRect.y >= startRect.y,
"Selection end point should be after start point");
NS_ASSERTION(startRect.height >= 0,
"rect should have non-negative height.");
NS_ASSERTION(endRect.height >= 0,
"rect should have non-negative height.");
nscoord selectionHgt = endRect.y + endRect.height - startRect.y;
// XXX This is temporary fix for printing more than one page of a selection
pageSequence->SetSelectionHeight(startRect.y * aPO->mZoomRatio,
selectionHgt * aPO->mZoomRatio);
// calc total pages by getting calculating the selection's height
// and then dividing it by how page content frames will fit.
nscoord pageWidth, pageHeight;
mPrt->mPrintDC->GetDeviceSurfaceDimensions(pageWidth, pageHeight);
pageHeight -= totalMargin.top + totalMargin.bottom;
int32_t totalPages = NSToIntCeil(float(selectionHgt) * aPO->mZoomRatio / float(pageHeight));
pageSequence->SetTotalNumPages(totalPages);
}
}
}
nsIFrame * seqFrame = do_QueryFrame(pageSequence);
if (!seqFrame) {
SetIsPrinting(false);
if (docTitleStr) nsMemory::Free(docTitleStr);
if (docURLStr) nsMemory::Free(docURLStr);
return NS_ERROR_FAILURE;
}
mPageSeqFrame = pageSequence;
mPageSeqFrame->StartPrint(poPresContext, mPrt->mPrintSettings, docTitleStr, docURLStr);
// Schedule Page to Print
PR_PL(("Scheduling Print of PO: %p (%s) \n", aPO, gFrameTypesStr[aPO->mFrameType]));
StartPagePrintTimer(aPO);
}
}
return NS_OK;
}
//---------------------------------------------------------------------
void
nsPrintEngine::SetDocAndURLIntoProgress(nsPrintObject* aPO,
nsIPrintProgressParams* aParams)
{
NS_ASSERTION(aPO, "Must have vaild nsPrintObject");
NS_ASSERTION(aParams, "Must have vaild nsIPrintProgressParams");
if (!aPO || !aPO->mDocShell || !aParams) {
return;
}
const uint32_t kTitleLength = 64;
PRUnichar * docTitleStr;
PRUnichar * docURLStr;
GetDisplayTitleAndURL(aPO, &docTitleStr, &docURLStr, eDocTitleDefURLDoc);
// Make sure the Titles & URLS don't get too long for the progress dialog
ElipseLongString(docTitleStr, kTitleLength, false);
ElipseLongString(docURLStr, kTitleLength, true);
aParams->SetDocTitle(docTitleStr);
aParams->SetDocURL(docURLStr);
if (docTitleStr != nullptr) nsMemory::Free(docTitleStr);
if (docURLStr != nullptr) nsMemory::Free(docURLStr);
}
//---------------------------------------------------------------------
void
nsPrintEngine::ElipseLongString(PRUnichar *& aStr, const uint32_t aLen, bool aDoFront)
{
// Make sure the URLS don't get too long for the progress dialog
if (aStr && NS_strlen(aStr) > aLen) {
if (aDoFront) {
PRUnichar * ptr = &aStr[NS_strlen(aStr) - aLen + 3];
nsAutoString newStr;
newStr.AppendLiteral("...");
newStr += ptr;
nsMemory::Free(aStr);
aStr = ToNewUnicode(newStr);
} else {
nsAutoString newStr(aStr);
newStr.SetLength(aLen-3);
newStr.AppendLiteral("...");
nsMemory::Free(aStr);
aStr = ToNewUnicode(newStr);
}
}
}
static bool
DocHasPrintCallbackCanvas(nsIDocument* aDoc, void* aData)
{
if (!aDoc) {
return true;
}
Element* root = aDoc->GetRootElement();
if (!root) {
return true;
}
nsRefPtr<nsContentList> canvases = NS_GetContentList(root,
kNameSpaceID_XHTML,
NS_LITERAL_STRING("canvas"));
uint32_t canvasCount = canvases->Length(true);
for (uint32_t i = 0; i < canvasCount; ++i) {
nsCOMPtr<nsIDOMHTMLCanvasElement> canvas = do_QueryInterface(canvases->Item(i, false));
nsCOMPtr<nsIPrintCallback> printCallback;
if (canvas && NS_SUCCEEDED(canvas->GetMozPrintCallback(getter_AddRefs(printCallback))) &&
printCallback) {
// This subdocument has a print callback. Set result and return false to
// stop iteration.
*static_cast<bool*>(aData) = true;
return false;
}
}
return true;
}
static bool
DocHasPrintCallbackCanvas(nsIDocument* aDoc)
{
bool result = false;
aDoc->EnumerateSubDocuments(&DocHasPrintCallbackCanvas, static_cast<void*>(&result));
return result;
}
/**
* Checks to see if the document this print engine is associated with has any
* canvases that have a mozPrintCallback.
*/
bool
nsPrintEngine::HasPrintCallbackCanvas()
{
if (!mDocument) {
return false;
}
// First check this mDocument.
bool result = false;
DocHasPrintCallbackCanvas(mDocument, static_cast<void*>(&result));
// Also check the sub documents.
return result || DocHasPrintCallbackCanvas(mDocument);
}
//-------------------------------------------------------
bool
nsPrintEngine::PrePrintPage()
{
NS_ASSERTION(mPageSeqFrame, "mPageSeqFrame is null!");
NS_ASSERTION(mPrt, "mPrt is null!");
// Although these should NEVER be NULL
// This is added insurance, to make sure we don't crash in optimized builds
if (!mPrt || !mPageSeqFrame) {
return true; // means we are done preparing the page.
}
// Check setting to see if someone request it be cancelled
bool isCancelled = false;
mPrt->mPrintSettings->GetIsCancelled(&isCancelled);
if (isCancelled)
return true;
// Ask mPageSeqFrame if the page is ready to be printed.
// If the page doesn't get printed at all, the |done| will be |true|.
bool done = false;
nsresult rv = mPageSeqFrame->PrePrintNextPage(mPagePrintTimer, &done);
if (NS_FAILED(rv)) {
// ??? ::PrintPage doesn't set |mPrt->mIsAborted = true| if rv != NS_ERROR_ABORT,
// but I don't really understand why this should be the right thing to do?
// Shouldn't |mPrt->mIsAborted| set to true all the time if something
// wents wrong?
if (rv != NS_ERROR_ABORT) {
ShowPrintErrorDialog(rv);
mPrt->mIsAborted = true;
}
done = true;
}
return done;
}
bool
nsPrintEngine::PrintPage(nsPrintObject* aPO,
bool& aInRange)
{
NS_ASSERTION(aPO, "aPO is null!");
NS_ASSERTION(mPageSeqFrame, "mPageSeqFrame is null!");
NS_ASSERTION(mPrt, "mPrt is null!");
// Although these should NEVER be NULL
// This is added insurance, to make sure we don't crash in optimized builds
if (!mPrt || !aPO || !mPageSeqFrame) {
ShowPrintErrorDialog(NS_ERROR_FAILURE);
return true; // means we are done printing
}
PR_PL(("-----------------------------------\n"));
PR_PL(("------ In DV::PrintPage PO: %p (%s)\n", aPO, gFrameTypesStr[aPO->mFrameType]));
// Check setting to see if someone request it be cancelled
bool isCancelled = false;
mPrt->mPrintSettings->GetIsCancelled(&isCancelled);
if (isCancelled || mPrt->mIsAborted)
return true;
int32_t pageNum, numPages, endPage;
mPageSeqFrame->GetCurrentPageNum(&pageNum);
mPageSeqFrame->GetNumPages(&numPages);
bool donePrinting;
bool isDoingPrintRange;
mPageSeqFrame->IsDoingPrintRange(&isDoingPrintRange);
if (isDoingPrintRange) {
int32_t fromPage;
int32_t toPage;
mPageSeqFrame->GetPrintRange(&fromPage, &toPage);
if (fromPage > numPages) {
return true;
}
if (toPage > numPages) {
toPage = numPages;
}
PR_PL(("****** Printing Page %d printing from %d to page %d\n", pageNum, fromPage, toPage));
donePrinting = pageNum >= toPage;
aInRange = pageNum >= fromPage && pageNum <= toPage;
endPage = (toPage - fromPage)+1;
} else {
PR_PL(("****** Printing Page %d of %d page(s)\n", pageNum, numPages));
donePrinting = pageNum >= numPages;
endPage = numPages;
aInRange = true;
}
// XXX This is wrong, but the actual behavior in the presence of a print
// range sucks.
if (mPrt->mPrintFrameType == nsIPrintSettings::kEachFrameSep)
endPage = mPrt->mNumPrintablePages;
mPrt->DoOnProgressChange(++mPrt->mNumPagesPrinted, endPage, false, 0);
// Print the Page
// if a print job was cancelled externally, an EndPage or BeginPage may
// fail and the failure is passed back here.
// Returning true means we are done printing.
//
// When rv == NS_ERROR_ABORT, it means we want out of the
// print job without displaying any error messages
nsresult rv = mPageSeqFrame->PrintNextPage();
if (NS_FAILED(rv)) {
if (rv != NS_ERROR_ABORT) {
ShowPrintErrorDialog(rv);
mPrt->mIsAborted = true;
}
return true;
}
mPageSeqFrame->DoPageEnd();
return donePrinting;
}
/** ---------------------------------------------------
* Find by checking frames type
*/
nsresult
nsPrintEngine::FindSelectionBoundsWithList(nsPresContext* aPresContext,
nsRenderingContext& aRC,
nsFrameList::Enumerator& aChildFrames,
nsIFrame * aParentFrame,
nsRect& aRect,
nsIFrame *& aStartFrame,
nsRect& aStartRect,
nsIFrame *& aEndFrame,
nsRect& aEndRect)
{
NS_ASSERTION(aPresContext, "Pointer is null!");
NS_ASSERTION(aParentFrame, "Pointer is null!");
aRect += aParentFrame->GetPosition();
for (; !aChildFrames.AtEnd(); aChildFrames.Next()) {
nsIFrame* child = aChildFrames.get();
if (child->IsSelected() && child->IsVisibleForPainting()) {
nsRect r = child->GetRect();
if (aStartFrame == nullptr) {
aStartFrame = child;
aStartRect.SetRect(aRect.x + r.x, aRect.y + r.y, r.width, r.height);
} else {
aEndFrame = child;
aEndRect.SetRect(aRect.x + r.x, aRect.y + r.y, r.width, r.height);
}
}
FindSelectionBounds(aPresContext, aRC, child, aRect, aStartFrame, aStartRect, aEndFrame, aEndRect);
child = child->GetNextSibling();
}
aRect -= aParentFrame->GetPosition();
return NS_OK;
}
//-------------------------------------------------------
// Find the Frame that is XMost
nsresult
nsPrintEngine::FindSelectionBounds(nsPresContext* aPresContext,
nsRenderingContext& aRC,
nsIFrame * aParentFrame,
nsRect& aRect,
nsIFrame *& aStartFrame,
nsRect& aStartRect,
nsIFrame *& aEndFrame,
nsRect& aEndRect)
{
NS_ASSERTION(aPresContext, "Pointer is null!");
NS_ASSERTION(aParentFrame, "Pointer is null!");
// loop through named child lists
nsIFrame::ChildListIterator lists(aParentFrame);
for (; !lists.IsDone(); lists.Next()) {
nsFrameList::Enumerator childFrames(lists.CurrentList());
nsresult rv = FindSelectionBoundsWithList(aPresContext, aRC, childFrames, aParentFrame, aRect, aStartFrame, aStartRect, aEndFrame, aEndRect);
NS_ENSURE_SUCCESS(rv, rv);
}
return NS_OK;
}
/** ---------------------------------------------------
* This method finds the starting and ending page numbers
* of the selection and also returns rect for each where
* the x,y of the rect is relative to the very top of the
* frame tree (absolutely positioned)
*/
nsresult
nsPrintEngine::GetPageRangeForSelection(nsIPresShell * aPresShell,
nsPresContext* aPresContext,
nsRenderingContext& aRC,
nsISelection* aSelection,
nsIPageSequenceFrame* aPageSeqFrame,
nsIFrame** aStartFrame,
int32_t& aStartPageNum,
nsRect& aStartRect,
nsIFrame** aEndFrame,
int32_t& aEndPageNum,
nsRect& aEndRect)
{
NS_ASSERTION(aPresShell, "Pointer is null!");
NS_ASSERTION(aPresContext, "Pointer is null!");
NS_ASSERTION(aSelection, "Pointer is null!");
NS_ASSERTION(aPageSeqFrame, "Pointer is null!");
NS_ASSERTION(aStartFrame, "Pointer is null!");
NS_ASSERTION(aEndFrame, "Pointer is null!");
nsIFrame * seqFrame = do_QueryFrame(aPageSeqFrame);
if (!seqFrame) {
return NS_ERROR_FAILURE;
}
nsIFrame * startFrame = nullptr;
nsIFrame * endFrame = nullptr;
// start out with the sequence frame and search the entire frame tree
// capturing the starting and ending child frames of the selection
// and their rects
nsRect r = seqFrame->GetRect();
FindSelectionBounds(aPresContext, aRC, seqFrame, r,
startFrame, aStartRect, endFrame, aEndRect);
#ifdef DEBUG_rodsX
printf("Start Frame: %p\n", startFrame);
printf("End Frame: %p\n", endFrame);
#endif
// initial the page numbers here
// in case we don't find and frames
aStartPageNum = -1;
aEndPageNum = -1;
nsIFrame * startPageFrame;
nsIFrame * endPageFrame;
// check to make sure we found a starting frame
if (startFrame != nullptr) {
// Now search up the tree to find what page the
// start/ending selections frames are on
//
// Check to see if start should be same as end if
// the end frame comes back null
if (endFrame == nullptr) {
// XXX the "GetPageFrame" step could be integrated into
// the FindSelectionBounds step, but walking up to find
// the parent of a child frame isn't expensive and it makes
// FindSelectionBounds a little easier to understand
startPageFrame = nsLayoutUtils::GetPageFrame(startFrame);
endPageFrame = startPageFrame;
aEndRect = aStartRect;
} else {
startPageFrame = nsLayoutUtils::GetPageFrame(startFrame);
endPageFrame = nsLayoutUtils::GetPageFrame(endFrame);
}
} else {
return NS_ERROR_FAILURE;
}
#ifdef DEBUG_rodsX
printf("Start Page: %p\n", startPageFrame);
printf("End Page: %p\n", endPageFrame);
// dump all the pages and their pointers
{
int32_t pageNum = 1;
nsIFrame* child = seqFrame->GetFirstPrincipalChild();
while (child != nullptr) {
printf("Page: %d - %p\n", pageNum, child);
pageNum++;
child = child->GetNextSibling();
}
}
#endif
// Now that we have the page frames
// find out what the page numbers are for each frame
int32_t pageNum = 1;
nsIFrame* page = seqFrame->GetFirstPrincipalChild();
while (page != nullptr) {
if (page == startPageFrame) {
aStartPageNum = pageNum;
}
if (page == endPageFrame) {
aEndPageNum = pageNum;
}
pageNum++;
page = page->GetNextSibling();
}
#ifdef DEBUG_rodsX
printf("Start Page No: %d\n", aStartPageNum);
printf("End Page No: %d\n", aEndPageNum);
#endif
*aStartFrame = startPageFrame;
*aEndFrame = endPageFrame;
return NS_OK;
}
//-----------------------------------------------------------------
//-- Done: Printing Methods
//-----------------------------------------------------------------
//-----------------------------------------------------------------
//-- Section: Misc Support Methods
//-----------------------------------------------------------------
//---------------------------------------------------------------------
void nsPrintEngine::SetIsPrinting(bool aIsPrinting)
{
mIsDoingPrinting = aIsPrinting;
// Calling SetIsPrinting while in print preview confuses the document viewer
// This is safe because we prevent exiting print preview while printing
if (!mIsDoingPrintPreview && mDocViewerPrint) {
mDocViewerPrint->SetIsPrinting(aIsPrinting);
}
if (mPrt && aIsPrinting) {
mPrt->mPreparingForPrint = true;
}
}
//---------------------------------------------------------------------
void nsPrintEngine::SetIsPrintPreview(bool aIsPrintPreview)
{
mIsDoingPrintPreview = aIsPrintPreview;
if (mDocViewerPrint) {
mDocViewerPrint->SetIsPrintPreview(aIsPrintPreview);
}
}
//---------------------------------------------------------------------
void
nsPrintEngine::CleanupDocTitleArray(PRUnichar**& aArray, int32_t& aCount)
{
for (int32_t i = aCount - 1; i >= 0; i--) {
nsMemory::Free(aArray[i]);
}
nsMemory::Free(aArray);
aArray = NULL;
aCount = 0;
}
//---------------------------------------------------------------------
// static
bool nsPrintEngine::HasFramesetChild(nsIContent* aContent)
{
if (!aContent) {
return false;
}
// do a breadth search across all siblings
for (nsIContent* child = aContent->GetFirstChild();
child;
child = child->GetNextSibling()) {
if (child->IsHTML(nsGkAtoms::frameset)) {
return true;
}
}
return false;
}
/** ---------------------------------------------------
* Get the Focused Frame for a documentviewer
*/
already_AddRefed<nsIDOMWindow>
nsPrintEngine::FindFocusedDOMWindow()
{
nsIFocusManager* fm = nsFocusManager::GetFocusManager();
NS_ENSURE_TRUE(fm, nullptr);
nsCOMPtr<nsPIDOMWindow> window(mDocument->GetWindow());
NS_ENSURE_TRUE(window, nullptr);
nsCOMPtr<nsPIDOMWindow> rootWindow = window->GetPrivateRoot();
NS_ENSURE_TRUE(rootWindow, nullptr);
nsPIDOMWindow* focusedWindow;
nsFocusManager::GetFocusedDescendant(rootWindow, true, &focusedWindow);
NS_ENSURE_TRUE(focusedWindow, nullptr);
if (IsWindowsInOurSubTree(focusedWindow)) {
return focusedWindow;
}
NS_IF_RELEASE(focusedWindow);
return nullptr;
}
//---------------------------------------------------------------------
bool
nsPrintEngine::IsWindowsInOurSubTree(nsPIDOMWindow * window)
{
bool found = false;
// now check to make sure it is in "our" tree of docshells
if (window) {
nsCOMPtr<nsIDocShell> docShell = window->GetDocShell();
if (docShell) {
// get this DocViewer docshell
nsCOMPtr<nsIDocShell> thisDVDocShell(do_QueryReferent(mContainer));
while (!found) {
if (docShell) {
if (docShell == thisDVDocShell) {
found = true;
break;
}
} else {
break; // at top of tree
}
nsCOMPtr<nsIDocShellTreeItem> docShellItemParent;
docShell->GetSameTypeParent(getter_AddRefs(docShellItemParent));
docShell = do_QueryInterface(docShellItemParent);
} // while
}
} // scriptobj
return found;
}
//-------------------------------------------------------
bool
nsPrintEngine::DonePrintingPages(nsPrintObject* aPO, nsresult aResult)
{
//NS_ASSERTION(aPO, "Pointer is null!");
PR_PL(("****** In DV::DonePrintingPages PO: %p (%s)\n", aPO, aPO?gFrameTypesStr[aPO->mFrameType]:""));
// If there is a pageSeqFrame, make sure there are no more printCanvas active
// that might call |Notify| on the pagePrintTimer after things are cleaned up
// and printing was marked as being done.
if (mPageSeqFrame) {
mPageSeqFrame->ResetPrintCanvasList();
}
if (aPO && !mPrt->mIsAborted) {
aPO->mHasBeenPrinted = true;
nsresult rv;
bool didPrint = PrintDocContent(mPrt->mPrintObject, rv);
if (NS_SUCCEEDED(rv) && didPrint) {
PR_PL(("****** In DV::DonePrintingPages PO: %p (%s) didPrint:%s (Not Done Printing)\n", aPO, gFrameTypesStr[aPO->mFrameType], PRT_YESNO(didPrint)));
return false;
}
}
if (NS_SUCCEEDED(aResult)) {
FirePrintCompletionEvent();
}
TurnScriptingOn(true);
SetIsPrinting(false);
// Release reference to mPagePrintTimer; the timer object destroys itself
// after this returns true
NS_IF_RELEASE(mPagePrintTimer);
return true;
}
//-------------------------------------------------------
// Recursively sets the PO items to be printed "As Is"
// from the given item down into the tree
void
nsPrintEngine::SetPrintAsIs(nsPrintObject* aPO, bool aAsIs)
{
NS_ASSERTION(aPO, "Pointer is null!");
aPO->mPrintAsIs = aAsIs;
for (uint32_t i=0;i<aPO->mKids.Length();i++) {
SetPrintAsIs(aPO->mKids[i], aAsIs);
}
}
//-------------------------------------------------------
// Given a DOMWindow it recursively finds the PO object that matches
nsPrintObject*
nsPrintEngine::FindPrintObjectByDOMWin(nsPrintObject* aPO,
nsIDOMWindow* aDOMWin)
{
NS_ASSERTION(aPO, "Pointer is null!");
// Often the CurFocused DOMWindow is passed in
// andit is valid for it to be null, so short circut
if (!aDOMWin) {
return nullptr;
}
nsCOMPtr<nsIDOMDocument> domDoc;
aDOMWin->GetDocument(getter_AddRefs(domDoc));
nsCOMPtr<nsIDocument> doc = do_QueryInterface(domDoc);
if (aPO->mDocument && aPO->mDocument->GetOriginalDocument() == doc) {
return aPO;
}
int32_t cnt = aPO->mKids.Length();
for (int32_t i = 0; i < cnt; ++i) {
nsPrintObject* po = FindPrintObjectByDOMWin(aPO->mKids[i], aDOMWin);
if (po) {
return po;
}
}
return nullptr;
}
//-------------------------------------------------------
nsresult
nsPrintEngine::EnablePOsForPrinting()
{
// NOTE: All POs have been "turned off" for printing
// this is where we decided which POs get printed.
mPrt->mSelectedPO = nullptr;
if (mPrt->mPrintSettings == nullptr) {
return NS_ERROR_FAILURE;
}
mPrt->mPrintFrameType = nsIPrintSettings::kNoFrames;
mPrt->mPrintSettings->GetPrintFrameType(&mPrt->mPrintFrameType);
int16_t printHowEnable = nsIPrintSettings::kFrameEnableNone;
mPrt->mPrintSettings->GetHowToEnableFrameUI(&printHowEnable);
int16_t printRangeType = nsIPrintSettings::kRangeAllPages;
mPrt->mPrintSettings->GetPrintRange(&printRangeType);
PR_PL(("\n"));
PR_PL(("********* nsPrintEngine::EnablePOsForPrinting *********\n"));
PR_PL(("PrintFrameType: %s \n", gPrintFrameTypeStr[mPrt->mPrintFrameType]));
PR_PL(("HowToEnableFrameUI: %s \n", gFrameHowToEnableStr[printHowEnable]));
PR_PL(("PrintRange: %s \n", gPrintRangeStr[printRangeType]));
PR_PL(("----\n"));
// ***** This is the ultimate override *****
// if we are printing the selection (either an IFrame or selection range)
// then set the mPrintFrameType as if it were the selected frame
if (printRangeType == nsIPrintSettings::kRangeSelection) {
mPrt->mPrintFrameType = nsIPrintSettings::kSelectedFrame;
printHowEnable = nsIPrintSettings::kFrameEnableNone;
}
// This tells us that the "Frame" UI has turned off,
// so therefore there are no FrameSets/Frames/IFrames to be printed
//
// This means there are not FrameSets,
// but the document could contain an IFrame
if (printHowEnable == nsIPrintSettings::kFrameEnableNone) {
// Print all the pages or a sub range of pages
if (printRangeType == nsIPrintSettings::kRangeAllPages ||
printRangeType == nsIPrintSettings::kRangeSpecifiedPageRange) {
SetPrintPO(mPrt->mPrintObject, true);
// Set the children so they are PrinAsIs
// In this case, the children are probably IFrames
if (mPrt->mPrintObject->mKids.Length() > 0) {
for (uint32_t i=0;i<mPrt->mPrintObject->mKids.Length();i++) {
nsPrintObject* po = mPrt->mPrintObject->mKids[i];
NS_ASSERTION(po, "nsPrintObject can't be null!");
SetPrintAsIs(po);
}
// ***** Another override *****
mPrt->mPrintFrameType = nsIPrintSettings::kFramesAsIs;
}
PR_PL(("PrintFrameType: %s \n", gPrintFrameTypeStr[mPrt->mPrintFrameType]));
PR_PL(("HowToEnableFrameUI: %s \n", gFrameHowToEnableStr[printHowEnable]));
PR_PL(("PrintRange: %s \n", gPrintRangeStr[printRangeType]));
return NS_OK;
}
// This means we are either printed a selected IFrame or
// we are printing the current selection
if (printRangeType == nsIPrintSettings::kRangeSelection) {
// If the currentFocusDOMWin can'r be null if something is selected
if (mPrt->mCurrentFocusWin) {
// Find the selected IFrame
nsPrintObject * po = FindPrintObjectByDOMWin(mPrt->mPrintObject, mPrt->mCurrentFocusWin);
if (po != nullptr) {
mPrt->mSelectedPO = po;
// Makes sure all of its children are be printed "AsIs"
SetPrintAsIs(po);
// Now, only enable this POs (the selected PO) and all of its children
SetPrintPO(po, true);
// check to see if we have a range selection,
// as oppose to a insert selection
// this means if the user just clicked on the IFrame then
// there will not be a selection so we want the entire page to print
//
// XXX this is sort of a hack right here to make the page
// not try to reposition itself when printing selection
nsCOMPtr<nsIDOMWindow> domWin =
do_QueryInterface(po->mDocument->GetOriginalDocument()->GetWindow());
if (!IsThereARangeSelection(domWin)) {
printRangeType = nsIPrintSettings::kRangeAllPages;
mPrt->mPrintSettings->SetPrintRange(printRangeType);
}
PR_PL(("PrintFrameType: %s \n", gPrintFrameTypeStr[mPrt->mPrintFrameType]));
PR_PL(("HowToEnableFrameUI: %s \n", gFrameHowToEnableStr[printHowEnable]));
PR_PL(("PrintRange: %s \n", gPrintRangeStr[printRangeType]));
return NS_OK;
}
} else {
for (uint32_t i=0;i<mPrt->mPrintDocList.Length();i++) {
nsPrintObject* po = mPrt->mPrintDocList.ElementAt(i);
NS_ASSERTION(po, "nsPrintObject can't be null!");
nsCOMPtr<nsIDOMWindow> domWin = do_GetInterface(po->mDocShell);
if (IsThereARangeSelection(domWin)) {
mPrt->mCurrentFocusWin = domWin;
SetPrintPO(po, true);
break;
}
}
return NS_OK;
}
}
}
// check to see if there is a selection when a FrameSet is present
if (printRangeType == nsIPrintSettings::kRangeSelection) {
// If the currentFocusDOMWin can'r be null if something is selected
if (mPrt->mCurrentFocusWin) {
// Find the selected IFrame
nsPrintObject * po = FindPrintObjectByDOMWin(mPrt->mPrintObject, mPrt->mCurrentFocusWin);
if (po != nullptr) {
mPrt->mSelectedPO = po;
// Makes sure all of its children are be printed "AsIs"
SetPrintAsIs(po);
// Now, only enable this POs (the selected PO) and all of its children
SetPrintPO(po, true);
// check to see if we have a range selection,
// as oppose to a insert selection
// this means if the user just clicked on the IFrame then
// there will not be a selection so we want the entire page to print
//
// XXX this is sort of a hack right here to make the page
// not try to reposition itself when printing selection
nsCOMPtr<nsIDOMWindow> domWin =
do_QueryInterface(po->mDocument->GetOriginalDocument()->GetWindow());
if (!IsThereARangeSelection(domWin)) {
printRangeType = nsIPrintSettings::kRangeAllPages;
mPrt->mPrintSettings->SetPrintRange(printRangeType);
}
PR_PL(("PrintFrameType: %s \n", gPrintFrameTypeStr[mPrt->mPrintFrameType]));
PR_PL(("HowToEnableFrameUI: %s \n", gFrameHowToEnableStr[printHowEnable]));
PR_PL(("PrintRange: %s \n", gPrintRangeStr[printRangeType]));
return NS_OK;
}
}
}
// If we are printing "AsIs" then sets all the POs to be printed as is
if (mPrt->mPrintFrameType == nsIPrintSettings::kFramesAsIs) {
SetPrintAsIs(mPrt->mPrintObject);
SetPrintPO(mPrt->mPrintObject, true);
return NS_OK;
}
// If we are printing the selected Frame then
// find that PO for that selected DOMWin and set it all of its
// children to be printed
if (mPrt->mPrintFrameType == nsIPrintSettings::kSelectedFrame) {
if ((mPrt->mIsParentAFrameSet && mPrt->mCurrentFocusWin) || mPrt->mIsIFrameSelected) {
nsPrintObject * po = FindPrintObjectByDOMWin(mPrt->mPrintObject, mPrt->mCurrentFocusWin);
if (po != nullptr) {
mPrt->mSelectedPO = po;
// NOTE: Calling this sets the "po" and
// we don't want to do this for documents that have no children,
// because then the "DoEndPage" gets called and it shouldn't
if (po->mKids.Length() > 0) {
// Makes sure that itself, and all of its children are printed "AsIs"
SetPrintAsIs(po);
}
// Now, only enable this POs (the selected PO) and all of its children
SetPrintPO(po, true);
}
}
return NS_OK;
}
// If we are print each subdoc separately,
// then don't print any of the FraneSet Docs
if (mPrt->mPrintFrameType == nsIPrintSettings::kEachFrameSep) {
SetPrintPO(mPrt->mPrintObject, true);
int32_t cnt = mPrt->mPrintDocList.Length();
for (int32_t i=0;i<cnt;i++) {
nsPrintObject* po = mPrt->mPrintDocList.ElementAt(i);
NS_ASSERTION(po, "nsPrintObject can't be null!");
if (po->mFrameType == eFrameSet) {
po->mDontPrint = true;
}
}
}
return NS_OK;
}
//-------------------------------------------------------
// Return the nsPrintObject with that is XMost (The widest frameset frame) AND
// contains the XMost (widest) layout frame
nsPrintObject*
nsPrintEngine::FindSmallestSTF()
{
float smallestRatio = 1.0f;
nsPrintObject* smallestPO = nullptr;
for (uint32_t i=0;i<mPrt->mPrintDocList.Length();i++) {
nsPrintObject* po = mPrt->mPrintDocList.ElementAt(i);
NS_ASSERTION(po, "nsPrintObject can't be null!");
if (po->mFrameType != eFrameSet && po->mFrameType != eIFrame) {
if (po->mShrinkRatio < smallestRatio) {
smallestRatio = po->mShrinkRatio;
smallestPO = po;
}
}
}
#ifdef EXTENDED_DEBUG_PRINTING
if (smallestPO) printf("*PO: %p Type: %d %10.3f\n", smallestPO, smallestPO->mFrameType, smallestPO->mShrinkRatio);
#endif
return smallestPO;
}
//-------------------------------------------------------
void
nsPrintEngine::TurnScriptingOn(bool aDoTurnOn)
{
if (mIsDoingPrinting && aDoTurnOn && mDocViewerPrint &&
mDocViewerPrint->GetIsPrintPreview()) {
// We don't want to turn scripting on if print preview is shown still after
// printing.
return;
}
nsPrintData* prt = mPrt;
#ifdef NS_PRINT_PREVIEW
if (!prt) {
prt = mPrtPreview;
}
#endif
if (!prt) {
return;
}
NS_ASSERTION(mDocument, "We MUST have a document.");
// First, get the script global object from the document...
for (uint32_t i=0;i<prt->mPrintDocList.Length();i++) {
nsPrintObject* po = prt->mPrintDocList.ElementAt(i);
NS_ASSERTION(po, "nsPrintObject can't be null!");
nsIDocument* doc = po->mDocument;
if (!doc) {
continue;
}
// get the script global object
nsIScriptGlobalObject *scriptGlobalObj = doc->GetScriptGlobalObject();
if (scriptGlobalObj) {
nsCOMPtr<nsPIDOMWindow> window = do_QueryInterface(scriptGlobalObj);
NS_ASSERTION(window, "Can't get nsPIDOMWindow");
nsIScriptContext *scx = scriptGlobalObj->GetContext();
NS_WARN_IF_FALSE(scx, "Can't get nsIScriptContext");
nsresult propThere = NS_PROPTABLE_PROP_NOT_THERE;
doc->GetProperty(nsGkAtoms::scriptEnabledBeforePrintOrPreview,
&propThere);
if (aDoTurnOn) {
if (propThere != NS_PROPTABLE_PROP_NOT_THERE) {
doc->DeleteProperty(nsGkAtoms::scriptEnabledBeforePrintOrPreview);
if (scx) {
scx->SetScriptsEnabled(true, false);
}
window->ResumeTimeouts(false);
}
} else {
// Have to be careful, because people call us over and over again with
// aDoTurnOn == false. So don't set the property if it's already
// set, since in that case we'd set it to the wrong value.
if (propThere == NS_PROPTABLE_PROP_NOT_THERE) {
// Stash the current value of IsScriptEnabled on the document, so
// that layout code running in print preview doesn't get confused.
doc->SetProperty(nsGkAtoms::scriptEnabledBeforePrintOrPreview,
NS_INT32_TO_PTR(doc->IsScriptEnabled()));
if (scx) {
scx->SetScriptsEnabled(false, false);
}
window->SuspendTimeouts(1, false);
}
}
}
}
}
//-----------------------------------------------------------------
//-- Done: Misc Support Methods
//-----------------------------------------------------------------
//-----------------------------------------------------------------
//-- Section: Finishing up or Cleaning up
//-----------------------------------------------------------------
//-----------------------------------------------------------------
void
nsPrintEngine::CloseProgressDialog(nsIWebProgressListener* aWebProgressListener)
{
if (aWebProgressListener) {
aWebProgressListener->OnStateChange(nullptr, nullptr, nsIWebProgressListener::STATE_STOP|nsIWebProgressListener::STATE_IS_DOCUMENT, NS_OK);
}
}
//-----------------------------------------------------------------
nsresult
nsPrintEngine::FinishPrintPreview()
{
nsresult rv = NS_OK;
#ifdef NS_PRINT_PREVIEW
if (!mPrt) {
/* we're already finished with print preview */
return rv;
}
rv = DocumentReadyForPrinting();
SetIsCreatingPrintPreview(false);
/* cleaup on failure + notify user */
if (NS_FAILED(rv)) {
/* cleanup done, let's fire-up an error dialog to notify the user
* what went wrong...
*/
mPrt->OnEndPrinting();
TurnScriptingOn(true);
return rv;
}
// At this point we are done preparing everything
// before it is to be created
if (mIsDoingPrintPreview && mOldPrtPreview) {
delete mOldPrtPreview;
mOldPrtPreview = nullptr;
}
mPrt->OnEndPrinting();
// PrintPreview was built using the mPrt (code reuse)
// then we assign it over
mPrtPreview = mPrt;
mPrt = nullptr;
#endif // NS_PRINT_PREVIEW
return NS_OK;
}
//-----------------------------------------------------------------
//-- Done: Finishing up or Cleaning up
//-----------------------------------------------------------------
/*=============== Timer Related Code ======================*/
nsresult
nsPrintEngine::StartPagePrintTimer(nsPrintObject* aPO)
{
if (!mPagePrintTimer) {
// Get the delay time in between the printing of each page
// this gives the user more time to press cancel
int32_t printPageDelay = 50;
mPrt->mPrintSettings->GetPrintPageDelay(&printPageDelay);
nsRefPtr<nsPagePrintTimer> timer =
new nsPagePrintTimer(this, mDocViewerPrint, printPageDelay);
timer.forget(&mPagePrintTimer);
}
return mPagePrintTimer->Start(aPO);
}
/*=============== nsIObserver Interface ======================*/
NS_IMETHODIMP
nsPrintEngine::Observe(nsISupports *aSubject, const char *aTopic, const PRUnichar *aData)
{
nsresult rv = NS_ERROR_FAILURE;
rv = InitPrintDocConstruction(true);
if (!mIsDoingPrinting && mPrtPreview) {
mPrtPreview->OnEndPrinting();
}
return rv;
}
//---------------------------------------------------------------
//-- PLEvent Notification
//---------------------------------------------------------------
class nsPrintCompletionEvent : public nsRunnable {
public:
nsPrintCompletionEvent(nsIDocumentViewerPrint *docViewerPrint)
: mDocViewerPrint(docViewerPrint) {
NS_ASSERTION(mDocViewerPrint, "mDocViewerPrint is null.");
}
NS_IMETHOD Run() {
if (mDocViewerPrint)
mDocViewerPrint->OnDonePrinting();
return NS_OK;
}
private:
nsCOMPtr<nsIDocumentViewerPrint> mDocViewerPrint;
};
//-----------------------------------------------------------
void
nsPrintEngine::FirePrintCompletionEvent()
{
nsCOMPtr<nsIRunnable> event = new nsPrintCompletionEvent(mDocViewerPrint);
if (NS_FAILED(NS_DispatchToCurrentThread(event)))
NS_WARNING("failed to dispatch print completion event");
}
//---------------------------------------------------------------
//---------------------------------------------------------------
//-- Debug helper routines
//---------------------------------------------------------------
//---------------------------------------------------------------
#if (defined(XP_WIN) || defined(XP_OS2)) && defined(EXTENDED_DEBUG_PRINTING)
#include "windows.h"
#include "process.h"
#include "direct.h"
#define MY_FINDFIRST(a,b) FindFirstFile(a,b)
#define MY_FINDNEXT(a,b) FindNextFile(a,b)
#define ISDIR(a) (a.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
#define MY_FINDCLOSE(a) FindClose(a)
#define MY_FILENAME(a) a.cFileName
#define MY_FILESIZE(a) (a.nFileSizeHigh * MAXDWORD) + a.nFileSizeLow
int RemoveFilesInDir(const char * aDir)
{
WIN32_FIND_DATA data_ptr;
HANDLE find_handle;
char path[MAX_PATH];
strcpy(path, aDir);
// Append slash to the end of the directory names if not there
if (path[strlen(path)-1] != '\\')
strcat(path, "\\");
char findPath[MAX_PATH];
strcpy(findPath, path);
strcat(findPath, "*.*");
find_handle = MY_FINDFIRST(findPath, &data_ptr);
if (find_handle != INVALID_HANDLE_VALUE) {
do {
if (ISDIR(data_ptr)
&& (stricmp(MY_FILENAME(data_ptr),"."))
&& (stricmp(MY_FILENAME(data_ptr),".."))) {
// skip
}
else if (!ISDIR(data_ptr)) {
if (!strncmp(MY_FILENAME(data_ptr), "print_dump", 10)) {
char fileName[MAX_PATH];
strcpy(fileName, aDir);
strcat(fileName, "\\");
strcat(fileName, MY_FILENAME(data_ptr));
printf("Removing %s\n", fileName);
remove(fileName);
}
}
} while(MY_FINDNEXT(find_handle,&data_ptr));
MY_FINDCLOSE(find_handle);
}
return TRUE;
}
#endif
#ifdef EXTENDED_DEBUG_PRINTING
/** ---------------------------------------------------
* Dumps Frames for Printing
*/
static void RootFrameList(nsPresContext* aPresContext, FILE* out, int32_t aIndent)
{
if (!aPresContext || !out)
return;
nsIPresShell *shell = aPresContext->GetPresShell();
if (shell) {
nsIFrame* frame = shell->FrameManager()->GetRootFrame();
if (frame) {
frame->List(aPresContext, out, aIndent);
}
}
}
/** ---------------------------------------------------
* Dumps Frames for Printing
*/
static void DumpFrames(FILE* out,
nsPresContext* aPresContext,
nsRenderingContext * aRendContext,
nsIFrame * aFrame,
int32_t aLevel)
{
NS_ASSERTION(out, "Pointer is null!");
NS_ASSERTION(aPresContext, "Pointer is null!");
NS_ASSERTION(aRendContext, "Pointer is null!");
NS_ASSERTION(aFrame, "Pointer is null!");
nsIFrame* child = aFrame->GetFirstPrincipalChild();
while (child != nullptr) {
for (int32_t i=0;i<aLevel;i++) {
fprintf(out, " ");
}
nsAutoString tmp;
child->GetFrameName(tmp);
fputs(NS_LossyConvertUTF16toASCII(tmp).get(), out);
bool isSelected;
if (NS_SUCCEEDED(child->IsVisibleForPainting(aPresContext, *aRendContext, true, &isSelected))) {
fprintf(out, " %p %s", child, isSelected?"VIS":"UVS");
nsRect rect = child->GetRect();
fprintf(out, "[%d,%d,%d,%d] ", rect.x, rect.y, rect.width, rect.height);
fprintf(out, "v: %p ", (void*)child->GetView());
fprintf(out, "\n");
DumpFrames(out, aPresContext, aRendContext, child, aLevel+1);
child = child->GetNextSibling();
}
}
}
/** ---------------------------------------------------
* Dumps the Views from the DocShell
*/
static void
DumpViews(nsIDocShell* aDocShell, FILE* out)
{
NS_ASSERTION(aDocShell, "Pointer is null!");
NS_ASSERTION(out, "Pointer is null!");
if (nullptr != aDocShell) {
fprintf(out, "docshell=%p \n", aDocShell);
nsIPresShell* shell = nsPrintEngine::GetPresShellFor(aDocShell);
if (shell) {
nsViewManager* vm = shell->GetViewManager();
if (vm) {
nsView* root = vm->GetRootView();
if (root) {
root->List(out);
}
}
}
else {
fputs("null pres shell\n", out);
}
// dump the views of the sub documents
int32_t i, n;
nsCOMPtr<nsIDocShellTreeNode> docShellAsNode(do_QueryInterface(aDocShell));
docShellAsNode->GetChildCount(&n);
for (i = 0; i < n; i++) {
nsCOMPtr<nsIDocShellTreeItem> child;
docShellAsNode->GetChildAt(i, getter_AddRefs(child));
nsCOMPtr<nsIDocShell> childAsShell(do_QueryInterface(child));
if (childAsShell) {
DumpViews(childAsShell, out);
}
}
}
}
/** ---------------------------------------------------
* Dumps the Views and Frames
*/
void DumpLayoutData(char* aTitleStr,
char* aURLStr,
nsPresContext* aPresContext,
nsDeviceContext * aDC,
nsIFrame * aRootFrame,
nsIDocShekk * aDocShell,
FILE* aFD = nullptr)
{
if (!kPrintingLogMod || kPrintingLogMod->level != DUMP_LAYOUT_LEVEL) return;
if (aPresContext == nullptr || aDC == nullptr) {
return;
}
#ifdef NS_PRINT_PREVIEW
if (aPresContext->Type() == nsPresContext::eContext_PrintPreview) {
return;
}
#endif
NS_ASSERTION(aRootFrame, "Pointer is null!");
NS_ASSERTION(aDocShell, "Pointer is null!");
// Dump all the frames and view to a a file
char filename[256];
sprintf(filename, "print_dump_layout_%d.txt", gDumpLOFileNameCnt++);
FILE * fd = aFD?aFD:fopen(filename, "w");
if (fd) {
fprintf(fd, "Title: %s\n", aTitleStr?aTitleStr:"");
fprintf(fd, "URL: %s\n", aURLStr?aURLStr:"");
fprintf(fd, "--------------- Frames ----------------\n");
fprintf(fd, "--------------- Frames ----------------\n");
nsRefPtr<nsRenderingContext> renderingContext;
aDC->CreateRenderingContext(*getter_AddRefs(renderingContext));
RootFrameList(aPresContext, fd, 0);
//DumpFrames(fd, aPresContext, renderingContext, aRootFrame, 0);
fprintf(fd, "---------------------------------------\n\n");
fprintf(fd, "--------------- Views From Root Frame----------------\n");
nsView* v = aRootFrame->GetView();
if (v) {
v->List(fd);
} else {
printf("View is null!\n");
}
if (aDocShell) {
fprintf(fd, "--------------- All Views ----------------\n");
DumpViews(aDocShell, fd);
fprintf(fd, "---------------------------------------\n\n");
}
if (aFD == nullptr) {
fclose(fd);
}
}
}
//-------------------------------------------------------------
static void DumpPrintObjectsList(nsTArray<nsPrintObject*> * aDocList)
{
if (!kPrintingLogMod || kPrintingLogMod->level != DUMP_LAYOUT_LEVEL) return;
NS_ASSERTION(aDocList, "Pointer is null!");
const char types[][3] = {"DC", "FR", "IF", "FS"};
PR_PL(("Doc List\n***************************************************\n"));
PR_PL(("T P A H PO DocShell Seq Page Root Page# Rect\n"));
int32_t cnt = aDocList->Length();
for (int32_t i=0;i<cnt;i++) {
nsPrintObject* po = aDocList->ElementAt(i);
NS_ASSERTION(po, "nsPrintObject can't be null!");
nsIFrame* rootFrame = nullptr;
if (po->mPresShell) {
rootFrame = po->mPresShell->FrameManager()->GetRootFrame();
while (rootFrame != nullptr) {
nsIPageSequenceFrame * sqf = do_QueryFrame(rootFrame);
if (sqf) {
break;
}
rootFrame = rootFrame->GetFirstPrincipalChild();
}
}
PR_PL(("%s %d %d %d %p %p %p %p %p %d %d,%d,%d,%d\n", types[po->mFrameType],
po->IsPrintable(), po->mPrintAsIs, po->mHasBeenPrinted, po, po->mDocShell.get(), po->mSeqFrame,
po->mPageFrame, rootFrame, po->mPageNum, po->mRect.x, po->mRect.y, po->mRect.width, po->mRect.height));
}
}
//-------------------------------------------------------------
static void DumpPrintObjectsTree(nsPrintObject * aPO, int aLevel, FILE* aFD)
{
if (!kPrintingLogMod || kPrintingLogMod->level != DUMP_LAYOUT_LEVEL) return;
NS_ASSERTION(aPO, "Pointer is null!");
FILE * fd = aFD?aFD:stdout;
const char types[][3] = {"DC", "FR", "IF", "FS"};
if (aLevel == 0) {
fprintf(fd, "DocTree\n***************************************************\n");
fprintf(fd, "T PO DocShell Seq Page Page# Rect\n");
}
int32_t cnt = aPO->mKids.Length();
for (int32_t i=0;i<cnt;i++) {
nsPrintObject* po = aPO->mKids.ElementAt(i);
NS_ASSERTION(po, "nsPrintObject can't be null!");
for (int32_t k=0;k<aLevel;k++) fprintf(fd, " ");
fprintf(fd, "%s %p %p %p %p %d %d,%d,%d,%d\n", types[po->mFrameType], po, po->mDocShell.get(), po->mSeqFrame,
po->mPageFrame, po->mPageNum, po->mRect.x, po->mRect.y, po->mRect.width, po->mRect.height);
}
}
//-------------------------------------------------------------
static void GetDocTitleAndURL(nsPrintObject* aPO, char *& aDocStr, char *& aURLStr)
{
aDocStr = nullptr;
aURLStr = nullptr;
PRUnichar * docTitleStr;
PRUnichar * docURLStr;
nsPrintEngine::GetDisplayTitleAndURL(aPO,
&docTitleStr, &docURLStr,
nsPrintEngine::eDocTitleDefURLDoc);
if (docTitleStr) {
nsAutoString strDocTitle(docTitleStr);
aDocStr = ToNewCString(strDocTitle);
nsMemory::Free(docTitleStr);
}
if (docURLStr) {
nsAutoString strURL(docURLStr);
aURLStr = ToNewCString(strURL);
nsMemory::Free(docURLStr);
}
}
//-------------------------------------------------------------
static void DumpPrintObjectsTreeLayout(nsPrintObject * aPO,
nsDeviceContext * aDC,
int aLevel, FILE * aFD)
{
if (!kPrintingLogMod || kPrintingLogMod->level != DUMP_LAYOUT_LEVEL) return;
NS_ASSERTION(aPO, "Pointer is null!");
NS_ASSERTION(aDC, "Pointer is null!");
const char types[][3] = {"DC", "FR", "IF", "FS"};
FILE * fd = nullptr;
if (aLevel == 0) {
fd = fopen("tree_layout.txt", "w");
fprintf(fd, "DocTree\n***************************************************\n");
fprintf(fd, "***************************************************\n");
fprintf(fd, "T PO DocShell Seq Page Page# Rect\n");
} else {
fd = aFD;
}
if (fd) {
nsIFrame* rootFrame = nullptr;
if (aPO->mPresShell) {
rootFrame = aPO->mPresShell->FrameManager()->GetRootFrame();
}
for (int32_t k=0;k<aLevel;k++) fprintf(fd, " ");
fprintf(fd, "%s %p %p %p %p %d %d,%d,%d,%d\n", types[aPO->mFrameType], aPO, aPO->mDocShell.get(), aPO->mSeqFrame,
aPO->mPageFrame, aPO->mPageNum, aPO->mRect.x, aPO->mRect.y, aPO->mRect.width, aPO->mRect.height);
if (aPO->IsPrintable()) {
char * docStr;
char * urlStr;
GetDocTitleAndURL(aPO, docStr, urlStr);
DumpLayoutData(docStr, urlStr, aPO->mPresContext, aDC, rootFrame, aPO->mDocShell, fd);
if (docStr) nsMemory::Free(docStr);
if (urlStr) nsMemory::Free(urlStr);
}
fprintf(fd, "<***************************************************>\n");
int32_t cnt = aPO->mKids.Length();
for (int32_t i=0;i<cnt;i++) {
nsPrintObject* po = aPO->mKids.ElementAt(i);
NS_ASSERTION(po, "nsPrintObject can't be null!");
DumpPrintObjectsTreeLayout(po, aDC, aLevel+1, fd);
}
}
if (aLevel == 0 && fd) {
fclose(fd);
}
}
//-------------------------------------------------------------
static void DumpPrintObjectsListStart(const char * aStr, nsTArray<nsPrintObject*> * aDocList)
{
if (!kPrintingLogMod || kPrintingLogMod->level != DUMP_LAYOUT_LEVEL) return;
NS_ASSERTION(aStr, "Pointer is null!");
NS_ASSERTION(aDocList, "Pointer is null!");
PR_PL(("%s\n", aStr));
DumpPrintObjectsList(aDocList);
}
#define DUMP_DOC_LIST(_title) DumpPrintObjectsListStart((_title), mPrt->mPrintDocList);
#define DUMP_DOC_TREE DumpPrintObjectsTree(mPrt->mPrintObject);
#define DUMP_DOC_TREELAYOUT DumpPrintObjectsTreeLayout(mPrt->mPrintObject, mPrt->mPrintDC);
#else
#define DUMP_DOC_LIST(_title)
#define DUMP_DOC_TREE
#define DUMP_DOC_TREELAYOUT
#endif
//---------------------------------------------------------------
//---------------------------------------------------------------
//-- End of debug helper routines
//---------------------------------------------------------------
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