gecko-dev/layout/printing/nsPrintEngine.h
Julian Viereck 5c87bd7c7a Bug 468568. Main patch: support downloading fonts in printing and print preview. r=smaug
--HG--
extra : rebase_source : 2fbaef2896d218e6900449c9510fc867419eac30
2012-09-04 16:29:27 +03:00

303 lines
12 KiB
C++

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