зеркало из https://github.com/mozilla/gecko-dev.git
648 строки
22 KiB
C++
648 строки
22 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*/
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#include "nsCOMPtr.h"
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#include "nsSimplePageSequence.h"
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#include "nsIPresContext.h"
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#include "nsIReflowCommand.h"
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#include "nsIRenderingContext.h"
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#include "nsIStyleContext.h"
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#include "nsHTMLAtoms.h"
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#include "nsHTMLIIDs.h"
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#include "nsIDeviceContext.h"
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#include "nsIViewManager.h"
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#include "nsIPresShell.h"
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#include "nsIStyleSet.h"
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#include "nsIFontMetrics.h"
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#include "nsIPrintOptions.h"
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#include "nsPageFrame.h"
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#define OFFSET_NOT_SET -1
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// This is for localization of the "x of n" pages string
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// this class contains a helper method we need to get
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// a string from a string bundle
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#include "nsFormControlHelper.h"
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#define PRINTING_PROPERTIES "chrome://communicator/locale/printing.properties"
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// Print Options
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#include "nsIPrintOptions.h"
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#include "nsGfxCIID.h"
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#include "nsIServiceManager.h"
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static NS_DEFINE_CID(kPrintOptionsCID, NS_PRINTOPTIONS_CID);
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//
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nsresult
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NS_NewSimplePageSequenceFrame(nsIPresShell* aPresShell, nsIFrame** aNewFrame)
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{
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NS_PRECONDITION(aNewFrame, "null OUT ptr");
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if (nsnull == aNewFrame) {
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return NS_ERROR_NULL_POINTER;
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}
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nsSimplePageSequenceFrame* it = new (aPresShell) nsSimplePageSequenceFrame;
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if (nsnull == it) {
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return NS_ERROR_OUT_OF_MEMORY;
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}
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*aNewFrame = it;
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return NS_OK;
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}
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nsSimplePageSequenceFrame::nsSimplePageSequenceFrame() :
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mIsPrintingSelection(PR_FALSE)
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{
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mStartOffset = OFFSET_NOT_SET;
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mEndOffset = OFFSET_NOT_SET;
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nscoord halfInch = NS_INCHES_TO_TWIPS(0.5);
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mMargin.SizeTo(halfInch, halfInch, halfInch, halfInch);
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// XXX this code and the object data member "mIsPrintingSelection" is only needed
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// for the hack for printing selection where we make the page the max size
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nsresult rv;
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NS_WITH_SERVICE(nsIPrintOptions, printService, kPrintOptionsCID, &rv);
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if (NS_SUCCEEDED(rv) && printService) {
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PRInt32 printType;
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printService->GetPrintRange(&printType);
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mIsPrintingSelection = ePrintRange_Selection == nsPrintRange(printType);
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}
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}
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nsSimplePageSequenceFrame::~nsSimplePageSequenceFrame()
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{
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}
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nsresult
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nsSimplePageSequenceFrame::QueryInterface(const nsIID& aIID, void** aInstancePtr)
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{
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NS_PRECONDITION(0 != aInstancePtr, "null ptr");
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if (NULL == aInstancePtr) {
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return NS_ERROR_NULL_POINTER;
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}
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if (aIID.Equals(kIPageSequenceFrameIID)) {
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*aInstancePtr = (void*)(nsIPageSequenceFrame*)this;
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return NS_OK;
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}
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return nsContainerFrame::QueryInterface(aIID, aInstancePtr);
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}
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//----------------------------------------------------------------------
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// Creates a continuing page frame
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nsresult
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nsSimplePageSequenceFrame::CreateContinuingPageFrame(nsIPresContext* aPresContext,
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nsIFrame* aPageFrame,
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nsIFrame** aContinuingPage)
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{
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nsIPresShell* presShell;
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nsIStyleSet* styleSet;
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nsresult rv;
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// Create the continuing frame
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aPresContext->GetShell(&presShell);
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presShell->GetStyleSet(&styleSet);
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NS_RELEASE(presShell);
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rv = styleSet->CreateContinuingFrame(aPresContext, aPageFrame, this, aContinuingPage);
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NS_RELEASE(styleSet);
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return rv;
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}
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// Handles incremental reflow
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nsresult
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nsSimplePageSequenceFrame::IncrementalReflow(nsIPresContext* aPresContext,
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const nsHTMLReflowState& aReflowState,
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nsSize& aPageSize,
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nscoord aX,
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nscoord& aY)
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{
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// We don't expect the target of the reflow command to be the simple
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// page sequence frame
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#ifdef NS_DEBUG
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nsIFrame* targetFrame;
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aReflowState.reflowCommand->GetTarget(targetFrame);
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NS_ASSERTION(targetFrame != this, "simple page sequence frame is reflow command target");
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#endif
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// Get the next child frame in the target chain
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nsIFrame* nextFrame;
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aReflowState.reflowCommand->GetNext(nextFrame);
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// Compute the y-offset of this page
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for (nsIFrame* f = mFrames.FirstChild(); f != nextFrame; f->GetNextSibling(&f)) {
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nsSize size;
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f->GetSize(size);
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aY += size.height + mMargin.top + mMargin.bottom;
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}
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// Reflow the page
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nsHTMLReflowState kidReflowState(aPresContext, aReflowState,
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nextFrame, aPageSize);
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nsHTMLReflowMetrics kidSize(nsnull);
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nsReflowStatus status;
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// Dispatch the reflow command to our child frame. Allow it to be as high
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// as it wants
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ReflowChild(nextFrame, aPresContext, kidSize, kidReflowState, aX, aY, 0, status);
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// Place and size the page. If the page is narrower than our max width, then
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// center it horizontally
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FinishReflowChild(nextFrame, aPresContext, kidSize, aX, aY, 0);
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aY += kidSize.height + mMargin.top + mMargin.bottom;
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// Check if the page is complete...
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nsIFrame* kidNextInFlow;
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nextFrame->GetNextInFlow(&kidNextInFlow);
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if (NS_FRAME_IS_COMPLETE(status)) {
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NS_ASSERTION(nsnull == kidNextInFlow, "bad child flow list");
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} else {
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nsReflowReason reflowReason = eReflowReason_Resize;
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if (!kidNextInFlow) {
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// The page isn't complete and it doesn't have a next-in-flow so
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// create a continuing page
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nsIFrame* continuingPage;
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CreateContinuingPageFrame(aPresContext, nextFrame, &continuingPage);
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// Add it to our child list
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nextFrame->SetNextSibling(continuingPage);
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reflowReason = eReflowReason_Initial;
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}
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// Reflow the remaining pages
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// XXX Ideally we would only reflow the next page if the current page indicated
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// its next-in-flow was dirty...
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nsIFrame* kidFrame;
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nextFrame->GetNextSibling(&kidFrame);
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while (kidFrame) {
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// Reflow the page
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nsHTMLReflowMetrics childSize(nsnull);
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nsHTMLReflowState childReflowState(aPresContext, aReflowState, kidFrame,
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aPageSize, reflowReason);
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// Place and size the page. If the page is narrower than our
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// max width then center it horizontally
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ReflowChild(kidFrame, aPresContext, childSize, childReflowState,
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aX, aY, 0, status);
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FinishReflowChild(kidFrame, aPresContext, childSize, aX, aY, 0);
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aY += childSize.height;
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// Leave a slight gap between the pages
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aY += mMargin.top + mMargin.bottom;
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// Is the page complete?
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kidFrame->GetNextInFlow(&kidNextInFlow);
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if (NS_FRAME_IS_COMPLETE(status)) {
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NS_ASSERTION(nsnull == kidNextInFlow, "bad child flow list");
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} else if (nsnull == kidNextInFlow) {
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// The page isn't complete and it doesn't have a next-in-flow, so
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// create a continuing page
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nsIFrame* continuingPage;
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CreateContinuingPageFrame(aPresContext, kidFrame, &continuingPage);
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// Add it to our child list
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kidFrame->SetNextSibling(continuingPage);
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reflowReason = eReflowReason_Initial;
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}
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// Get the next page
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kidFrame->GetNextSibling(&kidFrame);
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}
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}
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return NS_OK;
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}
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NS_IMETHODIMP
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nsSimplePageSequenceFrame::Reflow(nsIPresContext* aPresContext,
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nsHTMLReflowMetrics& aDesiredSize,
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const nsHTMLReflowState& aReflowState,
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nsReflowStatus& aStatus)
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{
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DO_GLOBAL_REFLOW_COUNT("nsSimplePageSequenceFrame", aReflowState.reason);
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NS_FRAME_TRACE_REFLOW_IN("nsSimplePageSequenceFrame::Reflow");
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aStatus = NS_FRAME_COMPLETE; // we're always complete
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// Compute the size of each page and the x coordinate that each page will
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// be placed at
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nsSize pageSize;
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aPresContext->GetPageWidth(&pageSize.width);
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aPresContext->GetPageHeight(&pageSize.height);
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// XXX - Hack Alert
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// OK, so ther eis a selection, we will print the entire selection
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// on one page and then crop the page.
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// This means you can never print any selection that is longer than one page
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// put it keeps it from page breaking in the middle of your print of the selection
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// (see also nsDocumentViewer.cpp)
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if (mIsPrintingSelection) {
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pageSize.height = 0x0FFFFFFF;
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}
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nscoord x = mMargin.left;
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// Running y-offset for each page
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nscoord y = mMargin.top;
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// See if it's an incremental reflow command
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if (eReflowReason_Incremental == aReflowState.reason) {
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IncrementalReflow(aPresContext, aReflowState, pageSize, x, y);
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} else {
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nsReflowReason reflowReason = aReflowState.reason;
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// Tile the pages vertically
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nsHTMLReflowMetrics kidSize(nsnull);
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for (nsIFrame* kidFrame = mFrames.FirstChild(); nsnull != kidFrame; ) {
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// Reflow the page
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nsHTMLReflowState kidReflowState(aPresContext, aReflowState, kidFrame,
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pageSize, reflowReason);
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nsReflowStatus status;
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kidReflowState.availableWidth = pageSize.width - mMargin.left - mMargin.right;
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kidReflowState.availableHeight = pageSize.height - mMargin.top - mMargin.bottom;
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kidReflowState.mComputedWidth = kidReflowState.availableWidth;
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//kidReflowState.mComputedHeight = kidReflowState.availableHeight;
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// Place and size the page. If the page is narrower than our
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// max width then center it horizontally
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ReflowChild(kidFrame, aPresContext, kidSize, kidReflowState, x, y, 0, status);
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FinishReflowChild(kidFrame, aPresContext, kidSize, x, y, 0);
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y += kidSize.height;
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nsIView* view;
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kidFrame->GetView(aPresContext, &view);
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NS_ASSERTION(nsnull != view, "no page view");
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nsRect rect;
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kidFrame->GetRect(rect);
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nsRect viewRect;
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view->GetBounds(viewRect);
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// Leave a slight gap between the pages
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y += mMargin.top + mMargin.bottom;
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// Is the page complete?
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nsIFrame* kidNextInFlow;
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kidFrame->GetNextInFlow(&kidNextInFlow);
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if (NS_FRAME_IS_COMPLETE(status)) {
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NS_ASSERTION(nsnull == kidNextInFlow, "bad child flow list");
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} else if (nsnull == kidNextInFlow) {
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// The page isn't complete and it doesn't have a next-in-flow, so
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// create a continuing page
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nsIFrame* continuingPage;
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CreateContinuingPageFrame(aPresContext, kidFrame, &continuingPage);
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// Add it to our child list
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kidFrame->SetNextSibling(continuingPage);
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reflowReason = eReflowReason_Initial;
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}
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// Get the next page
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kidFrame->GetNextSibling(&kidFrame);
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}
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}
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// Return our desired size
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aDesiredSize.height = y;
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aDesiredSize.width = pageSize.width;
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aDesiredSize.ascent = aDesiredSize.height;
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aDesiredSize.descent = 0;
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NS_FRAME_TRACE_REFLOW_OUT("nsSimplePageSequeceFrame::Reflow", aStatus);
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return NS_OK;
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}
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//----------------------------------------------------------------------
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#ifdef DEBUG
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NS_IMETHODIMP
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nsSimplePageSequenceFrame::GetFrameName(nsString& aResult) const
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{
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return MakeFrameName("SimplePageSequence", aResult);
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}
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#endif
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//----------------------------------------------------------------------
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// Helper function that sends the progress notification. Returns PR_TRUE
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// if printing should continue and PR_FALSE otherwise
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static PRBool
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SendStatusNotification(nsIPrintStatusCallback* aStatusCallback,
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PRInt32 aPageNumber,
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PRInt32 aTotalPages,
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nsPrintStatus aStatus)
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{
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PRBool ret = PR_TRUE;
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if (nsnull != aStatusCallback) {
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aStatusCallback->OnProgress(aPageNumber, aTotalPages, aStatus,ret);
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}
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return ret;
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}
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NS_IMETHODIMP
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nsSimplePageSequenceFrame::Print(nsIPresContext* aPresContext,
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nsIPrintOptions* aPrintOptions,
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nsIPrintStatusCallback* aStatusCallback)
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{
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NS_ENSURE_ARG_POINTER(aPresContext);
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NS_ENSURE_ARG_POINTER(aPrintOptions);
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nsPrintRange printRangeType;
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PRInt32 fromPageNum;
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PRInt32 toPageNum;
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PRInt32 marginL, marginR, marginT, marginB;
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PRBool printEvenPages, printOddPages;
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PRInt32 printType;
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aPrintOptions->GetPrintRange(&printType);
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printRangeType = (nsPrintRange)printType;
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aPrintOptions->GetPageRange(&fromPageNum, &toPageNum);
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aPrintOptions->GetMargins(&marginT, &marginL, &marginR, &marginB);
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mMargin.SizeTo(nscoord(marginL), nscoord(marginT), nscoord(marginR), nscoord(marginB));
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aPrintOptions->GetPrintOptions(NS_PRINT_OPTIONS_PRINT_EVEN_PAGES, &printEvenPages);
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aPrintOptions->GetPrintOptions(NS_PRINT_OPTIONS_PRINT_ODD_PAGES, &printOddPages);
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PRBool doingPageRange = ePrintRange_SpecifiedPageRange == printRangeType ||
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ePrintRange_Selection == printRangeType;
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// If printing a range of pages make sure at least the starting page
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// number is valid
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PRInt32 totalPages = mFrames.GetLength();
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if (doingPageRange) {
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if (fromPageNum > totalPages) {
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return NS_ERROR_INVALID_ARG;
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}
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}
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// Begin printing of the document
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nsCOMPtr<nsIDeviceContext> dc;
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aPresContext->GetDeviceContext(getter_AddRefs(dc));
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nsCOMPtr<nsIPresShell> presShell;
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aPresContext->GetShell(getter_AddRefs(presShell));
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nsCOMPtr<nsIViewManager> vm;
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presShell->GetViewManager(getter_AddRefs(vm));
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nsresult rv = NS_OK;
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#if defined(DEBUG_rods) || defined(DEBUG_dcone)
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{
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nsIView * seqView;
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GetView(aPresContext, &seqView);
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nsRect rect;
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GetRect(rect);
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printf("Seq Frame: - %d,%d,%d,%d ", rect.x, rect.y, rect.width, rect.height);
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printf("view: %p ", seqView);
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nsRect viewRect;
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if (seqView) {
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seqView->GetBounds(viewRect);
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printf(" %d,%d,%d,%d", viewRect.x, viewRect.y, viewRect.width, viewRect.height);
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}
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printf("\n");
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}
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{
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PRInt32 pageNum = 1;
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for (nsIFrame* page = mFrames.FirstChild(); nsnull != page; page->GetNextSibling(&page)) {
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nsIView* view;
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page->GetView(aPresContext, &view);
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NS_ASSERTION(nsnull != view, "no page view");
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nsRect rect;
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page->GetRect(rect);
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nsRect viewRect;
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view->GetBounds(viewRect);
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printf("Page: %d - %d,%d,%d,%d ", pageNum, rect.x, rect.y, rect.width, rect.height);
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printf(" %d,%d,%d,%d\n", viewRect.x, viewRect.y, viewRect.width, viewRect.height);
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pageNum++;
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}
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}
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printf("***** Setting aPresContext %p is painting selection %d\n", aPresContext, ePrintRange_Selection == printRangeType);
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#endif
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// Determine if we are rendering only the selection
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aPresContext->SetIsRenderingOnlySelection(ePrintRange_Selection == printRangeType);
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if (doingPageRange) {
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// XXX because of the hack for making the selection all print on one page
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// we must make sure that the page is sized correctly before printing.
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PRInt32 width,height;
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dc->GetDeviceSurfaceDimensions(width,height);
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height -= mMargin.top + mMargin.bottom;
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PRInt32 pageNum = 1;
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nscoord y = mMargin.top;
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for (nsIFrame* page = mFrames.FirstChild(); nsnull != page; page->GetNextSibling(&page)) {
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nsIView* view;
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page->GetView(aPresContext, &view);
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NS_ASSERTION(nsnull != view, "no page view");
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if (pageNum < fromPageNum || pageNum > toPageNum) {
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// XXX Doesn't seem like we need to do this
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// because we ask only the pages we want to print
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//view->SetVisibility(nsViewVisibility_kHide);
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} else {
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nsRect rect;
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page->GetRect(rect);
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rect.y = y;
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rect.height = height;
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page->SetRect(aPresContext, rect);
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nsRect viewRect;
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view->GetBounds(viewRect);
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viewRect.y = y;
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viewRect.height = height;
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view->SetBounds(viewRect);
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y += rect.height + mMargin.top + mMargin.bottom;
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}
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pageNum++;
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}
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// adjust total number of pages
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if (ePrintRange_Selection == printRangeType) {
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totalPages = toPageNum - fromPageNum + 1;
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} else {
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totalPages = pageNum - 1;
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}
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}
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// XXX - This wouldn't have to be done each time
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// but it isn't that expensive and this the best place
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// to have access to a localized file properties file
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//
|
|
// Note: because this is done here it makes a little bit harder
|
|
// to have UI for setting the header/footer font name and size
|
|
//
|
|
// Get default font name and size to be used for the headers and footers
|
|
nsAutoString fontName;
|
|
rv = nsFormControlHelper::GetLocalizedString(PRINTING_PROPERTIES, "fontname", fontName);
|
|
if (NS_FAILED(rv)) {
|
|
fontName.AssignWithConversion("serif");
|
|
}
|
|
|
|
nsAutoString fontSizeStr;
|
|
nscoord pointSize = 10;;
|
|
rv = nsFormControlHelper::GetLocalizedString(PRINTING_PROPERTIES, "fontsize", fontSizeStr);
|
|
if (NS_SUCCEEDED(rv)) {
|
|
PRInt32 errCode;
|
|
pointSize = fontSizeStr.ToInteger(&errCode);
|
|
if (NS_FAILED(errCode)) {
|
|
pointSize = 10;
|
|
}
|
|
}
|
|
aPrintOptions->SetFontNamePointSize(fontName, pointSize);
|
|
|
|
// Now go get the Localized Page Formating String
|
|
PRBool doingPageTotals = PR_TRUE;
|
|
aPrintOptions->GetPrintOptions(NS_PRINT_OPTIONS_PRINT_PAGE_TOTAL, &doingPageTotals);
|
|
|
|
nsAutoString pageFormatStr;
|
|
rv = nsFormControlHelper::GetLocalizedString(PRINTING_PROPERTIES,
|
|
doingPageTotals?"pageofpages":"pagenumber",
|
|
pageFormatStr);
|
|
if (NS_FAILED(rv)) { // back stop formatting
|
|
pageFormatStr.AssignWithConversion(doingPageTotals?"%ld of %ld":"%ld");
|
|
}
|
|
// Sets the format into a static data memeber which will own the memory and free it
|
|
nsPageFrame::SetPageNumberFormat(pageFormatStr.ToNewUnicode());
|
|
|
|
// Print each specified page
|
|
// pageNum keeps track of the current page and what pages are printing
|
|
//
|
|
// printedPageNum keeps track of the current page number to be printed
|
|
// Note: When print al the pages or a page range the printed page shows the
|
|
// actual page number, when printing selection it prints the page number starting
|
|
// with the first page of the selection. For example if the user has a
|
|
// selection that starts on page 2 and ends on page 3, the page numbers when
|
|
// print are 1 and then two (which is different than printing a page range, where
|
|
// the page numbers would have been 2 and then 3)
|
|
PRInt32 pageNum = 1;
|
|
PRInt32 printedPageNum = 1;
|
|
for (nsIFrame* page = mFrames.FirstChild(); nsnull != page; page->GetNextSibling(&page)) {
|
|
// See whether we should print this page
|
|
PRBool printThisPage = PR_TRUE;
|
|
|
|
// If printing a range of pages check whether the page number is in the
|
|
// range of pages to print
|
|
if (doingPageRange) {
|
|
if (pageNum < fromPageNum) {
|
|
printThisPage = PR_FALSE;
|
|
} else if (pageNum > toPageNum) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
// Check for printing of odd and even pages
|
|
if (pageNum & 0x1) {
|
|
if (!printOddPages) {
|
|
printThisPage = PR_FALSE; // don't print odd numbered page
|
|
}
|
|
} else {
|
|
if (!printEvenPages) {
|
|
printThisPage = PR_FALSE; // don't print even numbered page
|
|
}
|
|
}
|
|
|
|
if (printThisPage) {
|
|
// Start printing of the page
|
|
if (!SendStatusNotification(aStatusCallback, pageNum, totalPages,
|
|
ePrintStatus_StartPage)) {
|
|
rv = NS_ERROR_ABORT;
|
|
break;
|
|
}
|
|
rv = dc->BeginPage();
|
|
if (NS_FAILED(rv)) {
|
|
if (nsnull != aStatusCallback) {
|
|
aStatusCallback->OnError(ePrintError_Error);
|
|
}
|
|
break;
|
|
}
|
|
|
|
// cast the frame to be a page frame
|
|
nsPageFrame * pf = NS_STATIC_CAST(nsPageFrame*, page);
|
|
if (pf != nsnull) {
|
|
pf->SetPrintOptions(aPrintOptions);
|
|
pf->SetPageNumInfo(printedPageNum, totalPages);
|
|
}
|
|
|
|
// Print the page
|
|
nsIView* view;
|
|
page->GetView(aPresContext, &view);
|
|
|
|
NS_ASSERTION(nsnull != view, "no page view");
|
|
#if defined(DEBUG_rods) || defined(DEBUG_dcone)
|
|
{
|
|
char * fontname = fontName.ToNewCString();
|
|
printf("SPSF::Paint -> FontName[%s] Point Size: %d\n", fontname, pointSize);
|
|
nsMemory::Free(fontname);
|
|
printf("SPSF::Paint -> PageNo: %d View: %p\n", pageNum, view);
|
|
}
|
|
#endif
|
|
vm->Display(view, mMargin.left, mMargin.top);
|
|
|
|
|
|
// this view was printed and since display set the origin
|
|
// 0,0 there is a danger that this view can be printed again
|
|
// If it is a sibling to another page/view. Setting the visibility
|
|
// to hide will keep this page from printing again - dwc
|
|
//
|
|
// XXX Doesn't seem like we need to do this anymore
|
|
//view->SetVisibility(nsViewVisibility_kHide);
|
|
|
|
// Finish printing of the page
|
|
if (!SendStatusNotification(aStatusCallback, pageNum, totalPages,
|
|
ePrintStatus_EndPage)) {
|
|
rv = NS_ERROR_ABORT;
|
|
break;
|
|
}
|
|
rv = dc->EndPage();
|
|
if (NS_FAILED(rv)) {
|
|
if (nsnull != aStatusCallback) {
|
|
aStatusCallback->OnError(ePrintError_Error);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (ePrintRange_Selection != printRangeType ||
|
|
(ePrintRange_Selection == printRangeType && printThisPage)) {
|
|
printedPageNum++;
|
|
}
|
|
|
|
pageNum++;
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsSimplePageSequenceFrame::SetOffsets(nscoord aStartOffset, nscoord aEndOffset)
|
|
{
|
|
mStartOffset = aStartOffset;
|
|
mEndOffset = aEndOffset;
|
|
return NS_OK;
|
|
}
|