зеркало из https://github.com/mozilla/gecko-dev.git
314 строки
12 KiB
C++
314 строки
12 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef nsPrintEngine_h___
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#define nsPrintEngine_h___
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#include "mozilla/Attributes.h"
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#include "nsCOMPtr.h"
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#include "nsPrintObject.h"
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#include "nsPrintData.h"
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#include "nsFrameList.h"
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#include "mozilla/Attributes.h"
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#include "nsIWebProgress.h"
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#include "mozilla/dom/HTMLCanvasElement.h"
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#include "nsIWebProgressListener.h"
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#include "nsWeakReference.h"
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// Interfaces
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#include "nsIDOMWindow.h"
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#include "nsIObserver.h"
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// Classes
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class nsPagePrintTimer;
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class nsIDocShell;
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class nsDeviceContext;
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class nsIDocument;
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class nsIDocumentViewerPrint;
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class nsPrintObject;
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class nsIDocShell;
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class nsIPageSequenceFrame;
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class nsIWeakReference;
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//------------------------------------------------------------------------
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// nsPrintEngine Class
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//
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//------------------------------------------------------------------------
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class nsPrintEngine MOZ_FINAL : public nsIObserver,
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public nsIWebProgressListener,
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public nsSupportsWeakReference
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{
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public:
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// nsISupports interface...
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NS_DECL_ISUPPORTS
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// nsIObserver
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NS_DECL_NSIOBSERVER
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NS_DECL_NSIWEBPROGRESSLISTENER
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// Old nsIWebBrowserPrint methods; not cleaned up yet
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NS_IMETHOD Print(nsIPrintSettings* aPrintSettings,
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nsIWebProgressListener* aWebProgressListener);
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NS_IMETHOD PrintPreview(nsIPrintSettings* aPrintSettings,
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nsIDOMWindow *aChildDOMWin,
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nsIWebProgressListener* aWebProgressListener);
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NS_IMETHOD GetIsFramesetDocument(bool *aIsFramesetDocument);
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NS_IMETHOD GetIsIFrameSelected(bool *aIsIFrameSelected);
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NS_IMETHOD GetIsRangeSelection(bool *aIsRangeSelection);
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NS_IMETHOD GetIsFramesetFrameSelected(bool *aIsFramesetFrameSelected);
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NS_IMETHOD GetPrintPreviewNumPages(int32_t *aPrintPreviewNumPages);
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NS_IMETHOD EnumerateDocumentNames(uint32_t* aCount, char16_t*** aResult);
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static nsresult GetGlobalPrintSettings(nsIPrintSettings** aPrintSettings);
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NS_IMETHOD GetDoingPrint(bool *aDoingPrint);
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NS_IMETHOD GetDoingPrintPreview(bool *aDoingPrintPreview);
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NS_IMETHOD GetCurrentPrintSettings(nsIPrintSettings **aCurrentPrintSettings);
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// This enum tells indicates what the default should be for the title
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// if the title from the document is null
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enum eDocTitleDefault {
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eDocTitleDefBlank,
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eDocTitleDefURLDoc
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};
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nsPrintEngine();
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void Destroy();
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void DestroyPrintingData();
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nsresult Initialize(nsIDocumentViewerPrint* aDocViewerPrint,
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nsIDocShell* aContainer,
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nsIDocument* aDocument,
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float aScreenDPI,
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FILE* aDebugFile);
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nsresult GetSeqFrameAndCountPages(nsIFrame*& aSeqFrame, int32_t& aCount);
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//
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// The following three methods are used for printing...
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//
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nsresult DocumentReadyForPrinting();
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nsresult GetSelectionDocument(nsIDeviceContextSpec * aDevSpec,
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nsIDocument ** aNewDoc);
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nsresult SetupToPrintContent();
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nsresult EnablePOsForPrinting();
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nsPrintObject* FindSmallestSTF();
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bool PrintDocContent(nsPrintObject* aPO, nsresult& aStatus);
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nsresult DoPrint(nsPrintObject * aPO);
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void SetPrintPO(nsPrintObject* aPO, bool aPrint);
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void TurnScriptingOn(bool aDoTurnOn);
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bool CheckDocumentForPPCaching();
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void InstallPrintPreviewListener();
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// nsIDocumentViewerPrint Printing Methods
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bool HasPrintCallbackCanvas();
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bool PrePrintPage();
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bool PrintPage(nsPrintObject* aPOect, bool& aInRange);
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bool DonePrintingPages(nsPrintObject* aPO, nsresult aResult);
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//---------------------------------------------------------------------
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void BuildDocTree(nsIDocShell * aParentNode,
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nsTArray<nsPrintObject*> * aDocList,
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nsPrintObject * aPO);
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nsresult ReflowDocList(nsPrintObject * aPO, bool aSetPixelScale);
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nsresult ReflowPrintObject(nsPrintObject * aPO);
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void CheckForChildFrameSets(nsPrintObject* aPO);
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void CalcNumPrintablePages(int32_t& aNumPages);
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void ShowPrintProgress(bool aIsForPrinting, bool& aDoNotify);
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nsresult CleanupOnFailure(nsresult aResult, bool aIsPrinting);
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// If FinishPrintPreview() fails, caller may need to reset the state of the
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// object, for example by calling CleanupOnFailure().
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nsresult FinishPrintPreview();
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static void CloseProgressDialog(nsIWebProgressListener* aWebProgressListener);
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void SetDocAndURLIntoProgress(nsPrintObject* aPO,
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nsIPrintProgressParams* aParams);
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void EllipseLongString(nsAString& aStr, const uint32_t aLen, bool aDoFront);
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nsresult CheckForPrinters(nsIPrintSettings* aPrintSettings);
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void CleanupDocTitleArray(char16_t**& aArray, int32_t& aCount);
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bool IsThereARangeSelection(nsIDOMWindow * aDOMWin);
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//---------------------------------------------------------------------
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// Timer Methods
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nsresult StartPagePrintTimer(nsPrintObject* aPO);
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bool IsWindowsInOurSubTree(nsPIDOMWindow * aDOMWindow);
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static bool IsParentAFrameSet(nsIDocShell * aParent);
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bool IsThereAnIFrameSelected(nsIDocShell* aDocShell,
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nsIDOMWindow* aDOMWin,
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bool& aIsParentFrameSet);
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static nsPrintObject* FindPrintObjectByDOMWin(nsPrintObject* aParentObject,
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nsIDOMWindow* aDOMWin);
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// get the currently infocus frame for the document viewer
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already_AddRefed<nsIDOMWindow> FindFocusedDOMWindow();
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//---------------------------------------------------------------------
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// Static Methods
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//---------------------------------------------------------------------
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static void GetDocumentTitleAndURL(nsIDocument* aDoc,
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nsAString& aTitle,
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nsAString& aURLStr);
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void GetDisplayTitleAndURL(nsPrintObject* aPO,
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nsAString& aTitle,
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nsAString& aURLStr,
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eDocTitleDefault aDefType);
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static void ShowPrintErrorDialog(nsresult printerror,
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bool aIsPrinting = true);
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static bool HasFramesetChild(nsIContent* aContent);
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bool CheckBeforeDestroy();
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nsresult Cancelled();
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nsIPresShell* GetPrintPreviewPresShell() {return mPrtPreview->mPrintObject->mPresShell;}
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float GetPrintPreviewScale() { return mPrtPreview->mPrintObject->
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mPresContext->GetPrintPreviewScale(); }
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static nsIPresShell* GetPresShellFor(nsIDocShell* aDocShell);
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// These calls also update the DocViewer
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void SetIsPrinting(bool aIsPrinting);
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bool GetIsPrinting()
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{
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return mIsDoingPrinting;
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}
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void SetIsPrintPreview(bool aIsPrintPreview);
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bool GetIsPrintPreview()
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{
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return mIsDoingPrintPreview;
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}
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void SetIsCreatingPrintPreview(bool aIsCreatingPrintPreview)
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{
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mIsCreatingPrintPreview = aIsCreatingPrintPreview;
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}
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bool GetIsCreatingPrintPreview()
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{
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return mIsCreatingPrintPreview;
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}
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void SetDisallowSelectionPrint(bool aDisallowSelectionPrint)
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{
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mDisallowSelectionPrint = aDisallowSelectionPrint;
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}
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void SetNoMarginBoxes(bool aNoMarginBoxes) {
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mNoMarginBoxes = aNoMarginBoxes;
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}
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protected:
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~nsPrintEngine();
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nsresult CommonPrint(bool aIsPrintPreview, nsIPrintSettings* aPrintSettings,
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nsIWebProgressListener* aWebProgressListener,
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nsIDOMDocument* aDoc);
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nsresult DoCommonPrint(bool aIsPrintPreview, nsIPrintSettings* aPrintSettings,
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nsIWebProgressListener* aWebProgressListener,
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nsIDOMDocument* aDoc);
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void FirePrintCompletionEvent();
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static nsresult GetSeqFrameAndCountPagesInternal(nsPrintObject* aPO,
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nsIFrame*& aSeqFrame,
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int32_t& aCount);
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static nsresult FindSelectionBoundsWithList(nsPresContext* aPresContext,
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nsRenderingContext& aRC,
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nsFrameList::Enumerator& aChildFrames,
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nsIFrame * aParentFrame,
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nsRect& aRect,
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nsIFrame *& aStartFrame,
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nsRect& aStartRect,
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nsIFrame *& aEndFrame,
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nsRect& aEndRect);
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static nsresult FindSelectionBounds(nsPresContext* aPresContext,
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nsRenderingContext& aRC,
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nsIFrame * aParentFrame,
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nsRect& aRect,
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nsIFrame *& aStartFrame,
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nsRect& aStartRect,
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nsIFrame *& aEndFrame,
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nsRect& aEndRect);
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static nsresult GetPageRangeForSelection(nsIPresShell * aPresShell,
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nsPresContext* aPresContext,
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nsRenderingContext& aRC,
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nsISelection* aSelection,
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nsIPageSequenceFrame* aPageSeqFrame,
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nsIFrame** aStartFrame,
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int32_t& aStartPageNum,
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nsRect& aStartRect,
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nsIFrame** aEndFrame,
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int32_t& aEndPageNum,
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nsRect& aEndRect);
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static void MapContentForPO(nsPrintObject* aPO, nsIContent* aContent);
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static void MapContentToWebShells(nsPrintObject* aRootPO, nsPrintObject* aPO);
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static void SetPrintAsIs(nsPrintObject* aPO, bool aAsIs = true);
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// Static member variables
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bool mIsCreatingPrintPreview;
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bool mIsDoingPrinting;
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bool mIsDoingPrintPreview; // per DocumentViewer
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bool mProgressDialogIsShown;
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nsCOMPtr<nsIDocumentViewerPrint> mDocViewerPrint;
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nsWeakPtr mContainer;
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float mScreenDPI;
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nsPrintData* mPrt;
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nsPagePrintTimer* mPagePrintTimer;
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nsIPageSequenceFrame* mPageSeqFrame;
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// Print Preview
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nsPrintData* mPrtPreview;
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nsPrintData* mOldPrtPreview;
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nsCOMPtr<nsIDocument> mDocument;
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FILE* mDebugFile;
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int32_t mLoadCounter;
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bool mDidLoadDataForPrinting;
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bool mIsDestroying;
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bool mDisallowSelectionPrint;
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bool mNoMarginBoxes;
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nsresult AfterNetworkPrint(bool aHandleError);
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nsresult SetRootView(nsPrintObject* aPO,
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bool& aDoReturn,
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bool& aDocumentIsTopLevel,
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nsSize& aAdjSize);
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nsView* GetParentViewForRoot();
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bool DoSetPixelScale();
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void UpdateZoomRatio(nsPrintObject* aPO, bool aSetPixelScale);
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nsresult ReconstructAndReflow(bool aDoSetPixelScale);
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nsresult UpdateSelectionAndShrinkPrintObject(nsPrintObject* aPO,
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bool aDocumentIsTopLevel);
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nsresult InitPrintDocConstruction(bool aHandleError);
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void FirePrintPreviewUpdateEvent();
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private:
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nsPrintEngine& operator=(const nsPrintEngine& aOther) = delete;
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};
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#endif /* nsPrintEngine_h___ */
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