pjs/layout/printing/nsPrintEngine.h

308 строки
12 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#ifndef nsPrintEngine_h___
#define nsPrintEngine_h___
#include "nsCOMPtr.h"
#include "nsPrintObject.h"
#include "nsPrintData.h"
// Interfaces
#include "nsIDocument.h"
#include "nsIDOMWindow.h"
#include "nsIObserver.h"
// Classes
class nsPagePrintTimer;
class nsIDocShellTreeNode;
class nsIDeviceContext;
class nsIDocumentViewerPrint;
class nsPrintObject;
class nsIDocShell;
class nsIPageSequenceFrame;
//------------------------------------------------------------------------
// nsPrintEngine Class
//
//------------------------------------------------------------------------
class nsPrintEngine : public nsIObserver
{
public:
// nsISupports interface...
NS_DECL_ISUPPORTS
// nsIObserver
NS_DECL_NSIOBSERVER
// 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(PRBool *aIsFramesetDocument);
NS_IMETHOD GetIsIFrameSelected(PRBool *aIsIFrameSelected);
NS_IMETHOD GetIsRangeSelection(PRBool *aIsRangeSelection);
NS_IMETHOD GetIsFramesetFrameSelected(PRBool *aIsFramesetFrameSelected);
NS_IMETHOD GetPrintPreviewNumPages(PRInt32 *aPrintPreviewNumPages);
NS_IMETHOD EnumerateDocumentNames(PRUint32* aCount, PRUnichar*** aResult);
static nsresult GetGlobalPrintSettings(nsIPrintSettings** aPrintSettings);
NS_IMETHOD GetDoingPrint(PRBool *aDoingPrint);
NS_IMETHOD GetDoingPrintPreview(PRBool *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,
nsISupports* aContainer,
nsIDocument* aDocument,
float aScreenDPI,
nsIWidget* aParentWidget,
FILE* aDebugFile);
nsresult GetSeqFrameAndCountPages(nsIFrame*& aSeqFrame, PRInt32& aCount);
//
// The following three methods are used for printing...
//
nsresult DocumentReadyForPrinting();
nsresult GetSelectionDocument(nsIDeviceContextSpec * aDevSpec,
nsIDocument ** aNewDoc);
nsresult SetupToPrintContent();
nsresult EnablePOsForPrinting();
nsPrintObject* FindSmallestSTF();
PRBool PrintDocContent(nsPrintObject* aPO, nsresult& aStatus);
nsresult DoPrint(nsPrintObject * aPO);
void SetPrintPO(nsPrintObject* aPO, PRBool aPrint);
void TurnScriptingOn(PRBool aDoTurnOn);
PRBool CheckDocumentForPPCaching();
void InstallPrintPreviewListener();
// nsIDocumentViewerPrint Printing Methods
PRBool PrintPage(nsPrintObject* aPOect, PRBool& aInRange);
PRBool DonePrintingPages(nsPrintObject* aPO, nsresult aResult);
//---------------------------------------------------------------------
void BuildDocTree(nsIDocShellTreeNode * aParentNode,
nsTArray<nsPrintObject*> * aDocList,
nsPrintObject * aPO);
nsresult ReflowDocList(nsPrintObject * aPO, PRBool aSetPixelScale);
nsresult ReflowPrintObject(nsPrintObject * aPO);
void CheckForChildFrameSets(nsPrintObject* aPO);
void CalcNumPrintablePages(PRInt32& aNumPages);
void ShowPrintProgress(PRBool aIsForPrinting, PRBool& aDoNotify);
nsresult CleanupOnFailure(nsresult aResult, PRBool 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 PRUint32 aLen, PRBool aDoFront);
nsresult CheckForPrinters(nsIPrintSettings* aPrintSettings);
void CleanupDocTitleArray(PRUnichar**& aArray, PRInt32& aCount);
PRBool IsThereARangeSelection(nsIDOMWindow * aDOMWin);
//---------------------------------------------------------------------
// Timer Methods
nsresult StartPagePrintTimer(nsPrintObject* aPO);
PRBool IsWindowsInOurSubTree(nsIDOMWindow * aDOMWindow);
static PRBool IsParentAFrameSet(nsIDocShell * aParent);
PRBool IsThereAnIFrameSelected(nsIDocShell* aDocShell,
nsIDOMWindow* aDOMWin,
PRPackedBool& 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,
PRBool aIsPrinting = PR_TRUE);
static PRBool HasFramesetChild(nsIContent* aContent);
PRBool CheckBeforeDestroy();
nsresult Cancelled();
nsIWidget* GetPrintPreviewWindow() {return mPrtPreview->mPrintObject->mWindow;}
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(PRBool aIsPrinting);
PRBool GetIsPrinting()
{
return mIsDoingPrinting;
}
void SetIsPrintPreview(PRBool aIsPrintPreview);
PRBool GetIsPrintPreview()
{
return mIsDoingPrintPreview;
}
void SetIsCreatingPrintPreview(PRBool aIsCreatingPrintPreview)
{
mIsCreatingPrintPreview = aIsCreatingPrintPreview;
}
PRBool GetIsCreatingPrintPreview()
{
return mIsCreatingPrintPreview;
}
protected:
nsresult CommonPrint(PRBool aIsPrintPreview, nsIPrintSettings* aPrintSettings,
nsIWebProgressListener* aWebProgressListener,
nsIDOMDocument* aDoc);
nsresult DoCommonPrint(PRBool aIsPrintPreview, nsIPrintSettings* aPrintSettings,
nsIWebProgressListener* aWebProgressListener,
nsIDOMDocument* aDoc);
void FirePrintCompletionEvent();
static nsresult GetSeqFrameAndCountPagesInternal(nsPrintObject* aPO,
nsIFrame*& aSeqFrame,
PRInt32& aCount);
static nsresult FindSelectionBoundsWithList(nsPresContext* aPresContext,
nsIRenderingContext& aRC,
nsIAtom* aList,
nsIFrame * aParentFrame,
nsRect& aRect,
nsIFrame *& aStartFrame,
nsRect& aStartRect,
nsIFrame *& aEndFrame,
nsRect& aEndRect);
static nsresult FindSelectionBounds(nsPresContext* aPresContext,
nsIRenderingContext& aRC,
nsIFrame * aParentFrame,
nsRect& aRect,
nsIFrame *& aStartFrame,
nsRect& aStartRect,
nsIFrame *& aEndFrame,
nsRect& aEndRect);
static nsresult GetPageRangeForSelection(nsIPresShell * aPresShell,
nsPresContext* aPresContext,
nsIRenderingContext& aRC,
nsISelection* aSelection,
nsIPageSequenceFrame* aPageSeqFrame,
nsIFrame** aStartFrame,
PRInt32& aStartPageNum,
nsRect& aStartRect,
nsIFrame** aEndFrame,
PRInt32& aEndPageNum,
nsRect& aEndRect);
static void MapContentForPO(nsPrintObject* aPO, nsIContent* aContent);
static void MapContentToWebShells(nsPrintObject* aRootPO, nsPrintObject* aPO);
static void SetPrintAsIs(nsPrintObject* aPO, PRBool aAsIs = PR_TRUE);
// Static member variables
PRPackedBool mIsCreatingPrintPreview;
PRPackedBool mIsDoingPrinting;
PRPackedBool mIsDoingPrintPreview; // per DocumentViewer
PRPackedBool mProgressDialogIsShown;
nsCOMPtr<nsIDocumentViewerPrint> mDocViewerPrint;
nsISupports* mContainer; // [WEAK] it owns me!
float mScreenDPI;
nsPrintData* mPrt;
nsPagePrintTimer* mPagePrintTimer;
nsIPageSequenceFrame* mPageSeqFrame;
// Print Preview
nsCOMPtr<nsIWidget> mParentWidget;
nsPrintData* mPrtPreview;
nsPrintData* mOldPrtPreview;
nsCOMPtr<nsIDocument> mDocument;
FILE* mDebugFile;
private:
nsPrintEngine& operator=(const nsPrintEngine& aOther); // not implemented
};
#endif /* nsPrintEngine_h___ */