зеркало из https://github.com/mozilla/pjs.git
653 строки
24 KiB
C++
653 строки
24 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* 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
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsPageFrame.h"
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#include "nsPresContext.h"
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#include "nsStyleContext.h"
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#include "nsIRenderingContext.h"
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#include "nsGkAtoms.h"
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#include "nsIPresShell.h"
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#include "nsCSSFrameConstructor.h"
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#include "nsIDeviceContext.h"
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#include "nsReadableUtils.h"
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#include "nsPageContentFrame.h"
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#include "nsDisplayList.h"
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#include "nsLayoutUtils.h" // for function BinarySearchForPosition
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#include "nsCSSRendering.h"
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#include "nsSimplePageSequence.h" // for nsSharedPageData
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#include "nsTextFormatter.h" // for page number localization formatting
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#ifdef IBMBIDI
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#include "nsBidiUtils.h"
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#include "nsBidiPresUtils.h"
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#endif
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#include "nsIFontMetrics.h"
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#include "nsIPrintSettings.h"
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#include "nsRegion.h"
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#include "prlog.h"
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#ifdef PR_LOGGING
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extern PRLogModuleInfo * kLayoutPrintingLogMod;
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#define PR_PL(_p1) PR_LOG(kLayoutPrintingLogMod, PR_LOG_DEBUG, _p1)
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#else
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#define PR_PL(_p1)
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#endif
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nsIFrame*
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NS_NewPageFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
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{
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return new (aPresShell) nsPageFrame(aContext);
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}
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nsPageFrame::nsPageFrame(nsStyleContext* aContext)
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: nsContainerFrame(aContext)
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{
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}
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nsPageFrame::~nsPageFrame()
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{
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}
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NS_IMETHODIMP nsPageFrame::Reflow(nsPresContext* 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("nsPageFrame");
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DISPLAY_REFLOW(aPresContext, this, aReflowState, aDesiredSize, aStatus);
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aStatus = NS_FRAME_COMPLETE; // initialize out parameter
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// Do we have any children?
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// XXX We should use the overflow list instead...
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nsIFrame* firstFrame = mFrames.FirstChild();
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nsPageContentFrame* contentPage = NS_STATIC_CAST(nsPageContentFrame*, firstFrame);
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NS_ASSERTION(contentPage, "There should always be a content page");
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NS_ASSERTION(nsGkAtoms::pageContentFrame == firstFrame->GetType(),
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"This frame isn't a pageContentFrame");
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if (contentPage && GetPrevInFlow() && !contentPage->GetFirstChild(nsnull)) {
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nsPageFrame* prevPage = NS_STATIC_CAST(nsPageFrame*, GetPrevInFlow());
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nsPageContentFrame* prevContentPage = NS_STATIC_CAST(nsPageContentFrame*, prevPage->mFrames.FirstChild());
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nsIFrame* prevLastChild = prevContentPage->mFrames.LastChild();
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// Create a continuing child of the previous page's last child
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nsIFrame* newFrame;
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nsresult rv = aPresContext->PresShell()->FrameConstructor()->
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CreateContinuingFrame(aPresContext, prevLastChild,
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contentPage, &newFrame);
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if (NS_FAILED(rv)) {
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return rv;
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}
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// Make the new area frame the 1st child of the page content frame. There may already be
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// children placeholders which don't get reflowed but must not be destroyed until the
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// page content frame is destroyed.
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contentPage->mFrames.InsertFrame(contentPage, nsnull, newFrame);
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}
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// Resize our frame allowing it only to be as big as we are
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// XXX Pay attention to the page's border and padding...
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if (mFrames.NotEmpty()) {
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nsIFrame* frame = mFrames.FirstChild();
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// When the reflow size is NS_UNCONSTRAINEDSIZE it means we are reflowing
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// a single page to print selection. So this means we want to use
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// NS_UNCONSTRAINEDSIZE without altering it
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nscoord avHeight;
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if (mPD->mReflowSize.height == NS_UNCONSTRAINEDSIZE) {
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avHeight = NS_UNCONSTRAINEDSIZE;
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} else {
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avHeight = mPD->mReflowSize.height - mPD->mReflowMargin.TopBottom();
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}
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nsSize maxSize(mPD->mReflowSize.width - mPD->mReflowMargin.LeftRight(),
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avHeight);
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float scale = aPresContext->GetPageScale();
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maxSize.width = NSToCoordCeil(maxSize.width / scale);
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maxSize.height = NSToCoordCeil(maxSize.height / scale);
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// Get the number of Twips per pixel from the PresContext
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nscoord onePixelInTwips = nsPresContext::CSSPixelsToAppUnits(1);
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// insurance against infinite reflow, when reflowing less than a pixel
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// XXX Shouldn't we do something more friendly when invalid margins
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// are set?
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if (maxSize.width < onePixelInTwips || maxSize.height < onePixelInTwips) {
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aDesiredSize.width = 0;
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aDesiredSize.height = 0;
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NS_WARNING("Reflow aborted; no space for content");
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return NS_OK;
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}
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nsHTMLReflowState kidReflowState(aPresContext, aReflowState, frame, maxSize);
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kidReflowState.mFlags.mIsTopOfPage = PR_TRUE;
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kidReflowState.mFlags.mTableIsSplittable = PR_TRUE;
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// calc location of frame
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nscoord xc = mPD->mReflowMargin.left + mPD->mExtraMargin.left;
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nscoord yc = mPD->mReflowMargin.top + mPD->mExtraMargin.top;
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// Get the child's desired size
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ReflowChild(frame, aPresContext, aDesiredSize, kidReflowState, xc, yc, 0, aStatus);
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// Place and size the child
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FinishReflowChild(frame, aPresContext, &kidReflowState, aDesiredSize, xc, yc, 0);
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NS_ASSERTION(!NS_FRAME_IS_COMPLETE(aStatus) ||
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!frame->GetNextInFlow(), "bad child flow list");
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}
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PR_PL(("PageFrame::Reflow %p ", this));
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PR_PL(("[%d,%d][%d,%d]\n", aDesiredSize.width, aDesiredSize.height, aReflowState.availableWidth, aReflowState.availableHeight));
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// Return our desired size
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aDesiredSize.width = aReflowState.availableWidth;
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if (aReflowState.availableHeight != NS_UNCONSTRAINEDSIZE) {
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aDesiredSize.height = aReflowState.availableHeight;
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}
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PR_PL(("PageFrame::Reflow %p ", this));
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PR_PL(("[%d,%d]\n", aReflowState.availableWidth, aReflowState.availableHeight));
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NS_FRAME_SET_TRUNCATION(aStatus, aReflowState, aDesiredSize);
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return NS_OK;
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}
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nsIAtom*
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nsPageFrame::GetType() const
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{
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return nsGkAtoms::pageFrame;
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}
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#ifdef DEBUG
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NS_IMETHODIMP
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nsPageFrame::GetFrameName(nsAString& aResult) const
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{
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return MakeFrameName(NS_LITERAL_STRING("Page"), aResult);
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}
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#endif
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/* virtual */ PRBool
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nsPageFrame::IsContainingBlock() const
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{
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return PR_TRUE;
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}
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void
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nsPageFrame::ProcessSpecialCodes(const nsString& aStr, nsString& aNewStr)
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{
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aNewStr = aStr;
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// Search to see if the &D code is in the string
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// then subst in the current date/time
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NS_NAMED_LITERAL_STRING(kDate, "&D");
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if (aStr.Find(kDate) != kNotFound) {
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if (mPD->mDateTimeStr != nsnull) {
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aNewStr.ReplaceSubstring(kDate.get(), mPD->mDateTimeStr);
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} else {
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aNewStr.ReplaceSubstring(kDate.get(), EmptyString().get());
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}
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}
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// NOTE: Must search for &PT before searching for &P
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//
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// Search to see if the "page number and page" total code are in the string
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// and replace the page number and page total code with the actual
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// values
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NS_NAMED_LITERAL_STRING(kPageAndTotal, "&PT");
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if (aStr.Find(kPageAndTotal) != kNotFound) {
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PRUnichar * uStr = nsTextFormatter::smprintf(mPD->mPageNumAndTotalsFormat, mPageNum, mTotNumPages);
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aNewStr.ReplaceSubstring(kPageAndTotal.get(), uStr);
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nsMemory::Free(uStr);
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}
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// Search to see if the page number code is in the string
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// and replace the page number code with the actual value
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NS_NAMED_LITERAL_STRING(kPage, "&P");
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if (aStr.Find(kPage) != kNotFound) {
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PRUnichar * uStr = nsTextFormatter::smprintf(mPD->mPageNumFormat, mPageNum);
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aNewStr.ReplaceSubstring(kPage.get(), uStr);
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nsMemory::Free(uStr);
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}
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NS_NAMED_LITERAL_STRING(kTitle, "&T");
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if (aStr.Find(kTitle) != kNotFound) {
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if (mPD->mDocTitle != nsnull) {
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aNewStr.ReplaceSubstring(kTitle.get(), mPD->mDocTitle);
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} else {
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aNewStr.ReplaceSubstring(kTitle.get(), EmptyString().get());
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}
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}
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NS_NAMED_LITERAL_STRING(kDocURL, "&U");
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if (aStr.Find(kDocURL) != kNotFound) {
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if (mPD->mDocURL != nsnull) {
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aNewStr.ReplaceSubstring(kDocURL.get(), mPD->mDocURL);
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} else {
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aNewStr.ReplaceSubstring(kDocURL.get(), EmptyString().get());
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}
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}
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NS_NAMED_LITERAL_STRING(kPageTotal, "&L");
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if (aStr.Find(kPageTotal) != kNotFound) {
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PRUnichar * uStr = nsTextFormatter::smprintf(mPD->mPageNumFormat, mTotNumPages);
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aNewStr.ReplaceSubstring(kPageTotal.get(), uStr);
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nsMemory::Free(uStr);
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}
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}
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//------------------------------------------------------------------------------
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nscoord nsPageFrame::GetXPosition(nsIRenderingContext& aRenderingContext,
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const nsRect& aRect,
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PRInt32 aJust,
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const nsString& aStr)
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{
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nscoord width = nsLayoutUtils::GetStringWidth(this, &aRenderingContext,
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aStr.get(), aStr.Length());
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nscoord x = aRect.x;
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switch (aJust) {
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case nsIPrintSettings::kJustLeft:
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x += mPD->mExtraMargin.left + mPD->mEdgePaperMargin.left;
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break;
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case nsIPrintSettings::kJustCenter:
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x += (aRect.width - width) / 2;
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break;
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case nsIPrintSettings::kJustRight:
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x += aRect.width - width - mPD->mExtraMargin.right - mPD->mEdgePaperMargin.right;
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break;
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} // switch
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return x;
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}
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// Draw a header or footer
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// @param aRenderingContext - rendering content ot draw into
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// @param aHeaderFooter - indicates whether it is a header or footer
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// @param aStrLeft - string for the left header or footer; can be empty
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// @param aStrCenter - string for the center header or footer; can be empty
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// @param aStrRight - string for the right header or footer; can be empty
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// @param aRect - the rect of the page
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// @param aAscent - the ascent of the font
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// @param aHeight - the height of the font
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void
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nsPageFrame::DrawHeaderFooter(nsIRenderingContext& aRenderingContext,
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nsHeaderFooterEnum aHeaderFooter,
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const nsString& aStrLeft,
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const nsString& aStrCenter,
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const nsString& aStrRight,
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const nsRect& aRect,
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nscoord aAscent,
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nscoord aHeight)
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{
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PRInt32 numStrs = 0;
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if (!aStrLeft.IsEmpty()) numStrs++;
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if (!aStrCenter.IsEmpty()) numStrs++;
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if (!aStrRight.IsEmpty()) numStrs++;
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if (numStrs == 0) return;
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nscoord strSpace = aRect.width / numStrs;
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if (!aStrLeft.IsEmpty()) {
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DrawHeaderFooter(aRenderingContext, aHeaderFooter,
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nsIPrintSettings::kJustLeft, aStrLeft, aRect, aAscent,
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aHeight, strSpace);
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}
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if (!aStrCenter.IsEmpty()) {
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DrawHeaderFooter(aRenderingContext, aHeaderFooter,
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nsIPrintSettings::kJustCenter, aStrCenter, aRect, aAscent,
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aHeight, strSpace);
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}
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if (!aStrRight.IsEmpty()) {
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DrawHeaderFooter(aRenderingContext, aHeaderFooter,
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nsIPrintSettings::kJustRight, aStrRight, aRect, aAscent,
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aHeight, strSpace);
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}
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}
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// Draw a header or footer string
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// @param aRenderingContext - rendering content ot draw into
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// @param aHeaderFooter - indicates whether it is a header or footer
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// @param aJust - indicates where the string is located within the header/footer
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// @param aStr - the string to be drawn
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// @param aRect - the rect of the page
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// @param aHeight - the height of the font
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// @param aAscent - the ascent of the font
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// @param aWidth - available width for the string
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void
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nsPageFrame::DrawHeaderFooter(nsIRenderingContext& aRenderingContext,
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nsHeaderFooterEnum aHeaderFooter,
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PRInt32 aJust,
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const nsString& aStr,
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const nsRect& aRect,
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nscoord aAscent,
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nscoord aHeight,
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nscoord aWidth)
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{
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nscoord contentWidth = aWidth - (mPD->mEdgePaperMargin.left + mPD->mEdgePaperMargin.right);
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if ((aHeaderFooter == eHeader && aHeight < mPD->mReflowMargin.top) ||
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(aHeaderFooter == eFooter && aHeight < mPD->mReflowMargin.bottom)) {
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nsAutoString str;
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ProcessSpecialCodes(aStr, str);
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PRInt32 indx;
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PRInt32 textWidth = 0;
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const PRUnichar* text = str.get();
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PRInt32 len = (PRInt32)str.Length();
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if (len == 0) {
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return; // bail is empty string
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}
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// find how much text fits, the "position" is the size of the available area
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if (nsLayoutUtils::BinarySearchForPosition(&aRenderingContext, text, 0, 0, 0, len,
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PRInt32(contentWidth), indx, textWidth)) {
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if (indx < len-1 ) {
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// we can't fit in all the text
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if (indx > 3) {
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// But we can fit in at least 4 chars. Show all but 3 of them, then
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// an ellipsis.
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// XXXbz for non-plane0 text, this may be cutting things in the
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// middle of a codepoint! Also, we have no guarantees that the three
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// dots will fit in the space the three chars we removed took up with
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// these font metrics!
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str.Truncate(indx-3);
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str.AppendLiteral("...");
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} else {
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// We can only fit 3 or fewer chars. Just show nothing
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str.Truncate();
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}
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}
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} else {
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return; // bail if couldn't find the correct length
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}
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// cacl the x and y positions of the text
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nscoord x = GetXPosition(aRenderingContext, aRect, aJust, str);
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nscoord y;
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if (aHeaderFooter == eHeader) {
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y = aRect.y + mPD->mExtraMargin.top + mPD->mEdgePaperMargin.top;
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} else {
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y = aRect.YMost() - aHeight - mPD->mExtraMargin.bottom - mPD->mEdgePaperMargin.bottom;
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}
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// set up new clip and draw the text
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aRenderingContext.PushState();
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aRenderingContext.SetColor(NS_RGB(0,0,0));
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aRenderingContext.SetClipRect(aRect, nsClipCombine_kReplace);
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nsLayoutUtils::DrawString(this, &aRenderingContext, str.get(), str.Length(), nsPoint(x, y + aAscent));
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aRenderingContext.PopState();
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}
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}
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static void PaintPrintPreviewBackground(nsIFrame* aFrame, nsIRenderingContext* aCtx,
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const nsRect& aDirtyRect, nsPoint aPt)
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{
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NS_STATIC_CAST(nsPageFrame*, aFrame)->PaintPrintPreviewBackground(*aCtx, aPt);
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}
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static void PaintPageContent(nsIFrame* aFrame, nsIRenderingContext* aCtx,
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const nsRect& aDirtyRect, nsPoint aPt)
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{
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NS_STATIC_CAST(nsPageFrame*, aFrame)->PaintPageContent(*aCtx, aDirtyRect, aPt);
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}
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static void PaintHeaderFooter(nsIFrame* aFrame, nsIRenderingContext* aCtx,
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const nsRect& aDirtyRect, nsPoint aPt)
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{
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NS_STATIC_CAST(nsPageFrame*, aFrame)->PaintHeaderFooter(*aCtx, aPt);
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}
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//------------------------------------------------------------------------------
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NS_IMETHODIMP
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nsPageFrame::BuildDisplayList(nsDisplayListBuilder* aBuilder,
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const nsRect& aDirtyRect,
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const nsDisplayListSet& aLists)
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{
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nsDisplayListCollection set;
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nsresult rv;
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if (GetPresContext()->IsScreen()) {
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rv = set.BorderBackground()->AppendNewToTop(new (aBuilder)
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nsDisplayGeneric(this, ::PaintPrintPreviewBackground, "PrintPreviewBackground"));
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NS_ENSURE_SUCCESS(rv, rv);
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}
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rv = set.BorderBackground()->AppendNewToTop(new (aBuilder)
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nsDisplayGeneric(this, ::PaintPageContent, "PageContent"));
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NS_ENSURE_SUCCESS(rv, rv);
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if (GetPresContext()->IsRootPaginatedDocument()) {
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rv = set.Content()->AppendNewToTop(new (aBuilder)
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nsDisplayGeneric(this, ::PaintHeaderFooter, "HeaderFooter"));
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|
NS_ENSURE_SUCCESS(rv, rv);
|
|
}
|
|
|
|
set.MoveTo(aLists);
|
|
return NS_OK;
|
|
}
|
|
|
|
//------------------------------------------------------------------------------
|
|
void
|
|
nsPageFrame::SetPageNumInfo(PRInt32 aPageNumber, PRInt32 aTotalPages)
|
|
{
|
|
mPageNum = aPageNumber;
|
|
mTotNumPages = aTotalPages;
|
|
}
|
|
|
|
|
|
void
|
|
nsPageFrame::PaintPrintPreviewBackground(nsIRenderingContext& aRenderingContext,
|
|
nsPoint aPt)
|
|
{
|
|
// fill page with White
|
|
aRenderingContext.SetColor(NS_RGB(255,255,255));
|
|
// REVIEW: this used to have rect's width and height be the
|
|
// mClipRect if specialClipIsSet ... but that seems completely bogus
|
|
// and inconsistent with the painting of the shadow below
|
|
nsRect rect(aPt, GetSize());
|
|
rect.width -= mPD->mShadowSize.width;
|
|
rect.height -= mPD->mShadowSize.height;
|
|
aRenderingContext.FillRect(rect);
|
|
// draw line around outside of page
|
|
aRenderingContext.SetColor(NS_RGB(0,0,0));
|
|
aRenderingContext.DrawRect(rect);
|
|
|
|
if (mPD->mShadowSize.width > 0 && mPD->mShadowSize.height > 0) {
|
|
aRenderingContext.SetColor(NS_RGB(51,51,51));
|
|
nsRect r(aPt.x,aPt.y, mRect.width, mRect.height);
|
|
nsRect shadowRect;
|
|
shadowRect.x = r.x + r.width - mPD->mShadowSize.width;
|
|
shadowRect.y = r.y + mPD->mShadowSize.height;
|
|
shadowRect.width = mPD->mShadowSize.width;
|
|
shadowRect.height = r.height - mPD->mShadowSize.height;
|
|
aRenderingContext.FillRect(shadowRect);
|
|
|
|
shadowRect.x = r.x + mPD->mShadowSize.width;
|
|
shadowRect.y = r.y + r.height - mPD->mShadowSize.height;
|
|
shadowRect.width = r.width - mPD->mShadowSize.width;
|
|
shadowRect.height = mPD->mShadowSize.height;
|
|
aRenderingContext.FillRect(shadowRect);
|
|
}
|
|
}
|
|
|
|
void
|
|
nsPageFrame::PaintHeaderFooter(nsIRenderingContext& aRenderingContext,
|
|
nsPoint aPt)
|
|
{
|
|
nsPresContext* pc = GetPresContext();
|
|
|
|
if (!mPD->mPrintSettings) {
|
|
if (pc->Type() == nsPresContext::eContext_PrintPreview || pc->IsDynamic())
|
|
mPD->mPrintSettings = pc->GetPrintSettings();
|
|
if (!mPD->mPrintSettings)
|
|
return;
|
|
}
|
|
|
|
nsRect rect(aPt.x, aPt.y, mRect.width - mPD->mShadowSize.width,
|
|
mRect.height - mPD->mShadowSize.height);
|
|
|
|
aRenderingContext.SetFont(*mPD->mHeadFootFont, nsnull);
|
|
aRenderingContext.SetColor(NS_RGB(0,0,0));
|
|
|
|
// Get the FontMetrics to determine width.height of strings
|
|
nsCOMPtr<nsIFontMetrics> fontMet;
|
|
pc->DeviceContext()->GetMetricsFor(*mPD->mHeadFootFont, nsnull,
|
|
*getter_AddRefs(fontMet));
|
|
nscoord ascent = 0;
|
|
nscoord visibleHeight = 0;
|
|
if (fontMet) {
|
|
fontMet->GetHeight(visibleHeight);
|
|
fontMet->GetMaxAscent(ascent);
|
|
}
|
|
|
|
// print document headers and footers
|
|
nsXPIDLString headerLeft, headerCenter, headerRight;
|
|
mPD->mPrintSettings->GetHeaderStrLeft(getter_Copies(headerLeft));
|
|
mPD->mPrintSettings->GetHeaderStrCenter(getter_Copies(headerCenter));
|
|
mPD->mPrintSettings->GetHeaderStrRight(getter_Copies(headerRight));
|
|
DrawHeaderFooter(aRenderingContext, eHeader,
|
|
headerLeft, headerCenter, headerRight,
|
|
rect, ascent, visibleHeight);
|
|
|
|
nsXPIDLString footerLeft, footerCenter, footerRight;
|
|
mPD->mPrintSettings->GetFooterStrLeft(getter_Copies(footerLeft));
|
|
mPD->mPrintSettings->GetFooterStrCenter(getter_Copies(footerCenter));
|
|
mPD->mPrintSettings->GetFooterStrRight(getter_Copies(footerRight));
|
|
DrawHeaderFooter(aRenderingContext, eFooter,
|
|
footerLeft, footerCenter, footerRight,
|
|
rect, ascent, visibleHeight);
|
|
}
|
|
|
|
//------------------------------------------------------------------------------
|
|
void
|
|
nsPageFrame::PaintPageContent(nsIRenderingContext& aRenderingContext,
|
|
const nsRect& aDirtyRect,
|
|
nsPoint aPt) {
|
|
nsIFrame* pageContentFrame = mFrames.FirstChild();
|
|
nsRect rect = aDirtyRect;
|
|
float scale = GetPresContext()->GetPageScale();
|
|
aRenderingContext.PushState();
|
|
// aPt translates to coords relative to this, then margins translate to
|
|
// pageContentFrame's coords
|
|
nsPoint framePos = aPt + pageContentFrame->GetOffsetTo(this);
|
|
aRenderingContext.Translate(framePos.x, framePos.y);
|
|
rect -= framePos;
|
|
aRenderingContext.Scale(scale, scale);
|
|
rect.ScaleRoundOut(1.0f / scale);
|
|
|
|
const nsStyleBorder* border = GetStyleBorder();
|
|
const nsStylePadding* padding = GetStylePadding();
|
|
nsRect backgroundRect = nsRect(nsPoint(0, 0), pageContentFrame->GetSize());
|
|
nsCSSRendering::PaintBackground(GetPresContext(), aRenderingContext, this,
|
|
rect, backgroundRect, *border, *padding,
|
|
PR_TRUE);
|
|
|
|
nsresult rv = nsLayoutUtils::PaintFrame(&aRenderingContext, pageContentFrame,
|
|
nsRegion(rect), NS_RGBA(0,0,0,0));
|
|
|
|
aRenderingContext.PopState();
|
|
}
|
|
|
|
void
|
|
nsPageFrame::SetSharedPageData(nsSharedPageData* aPD)
|
|
{
|
|
mPD = aPD;
|
|
// Set the shared data into the page frame before reflow
|
|
nsPageContentFrame * pcf = NS_STATIC_CAST(nsPageContentFrame*, mFrames.FirstChild());
|
|
if (pcf) {
|
|
pcf->SetSharedPageData(mPD);
|
|
}
|
|
|
|
}
|
|
|
|
nsIFrame*
|
|
NS_NewPageBreakFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
|
|
{
|
|
NS_PRECONDITION(aPresShell, "null PresShell");
|
|
//check that we are only creating page break frames when printing
|
|
NS_ASSERTION(aPresShell->GetPresContext()->IsPaginated(), "created a page break frame while not printing");
|
|
|
|
return new (aPresShell) nsPageBreakFrame(aContext);
|
|
}
|
|
|
|
nsPageBreakFrame::nsPageBreakFrame(nsStyleContext* aContext) :
|
|
nsLeafFrame(aContext), mHaveReflowed(PR_FALSE)
|
|
{
|
|
}
|
|
|
|
nsPageBreakFrame::~nsPageBreakFrame()
|
|
{
|
|
}
|
|
|
|
nscoord
|
|
nsPageBreakFrame::GetIntrinsicWidth()
|
|
{
|
|
return nsPresContext::CSSPixelsToAppUnits(1);
|
|
}
|
|
|
|
nsresult
|
|
nsPageBreakFrame::Reflow(nsPresContext* aPresContext,
|
|
nsHTMLReflowMetrics& aDesiredSize,
|
|
const nsHTMLReflowState& aReflowState,
|
|
nsReflowStatus& aStatus)
|
|
{
|
|
DO_GLOBAL_REFLOW_COUNT("nsPageBreakFrame");
|
|
DISPLAY_REFLOW(aPresContext, this, aReflowState, aDesiredSize, aStatus);
|
|
|
|
// Override reflow, since we don't want to deal with what our
|
|
// computed values are.
|
|
aDesiredSize.width = GetIntrinsicWidth();
|
|
aDesiredSize.height = aReflowState.availableHeight;
|
|
// round the height down to the nearest pixel
|
|
aDesiredSize.height -=
|
|
aDesiredSize.height % nsPresContext::CSSPixelsToAppUnits(1);
|
|
|
|
// Note: not using NS_FRAME_FIRST_REFLOW here, since it's not clear whether
|
|
// DidReflow will always get called before the next Reflow() call.
|
|
mHaveReflowed = PR_TRUE;
|
|
aStatus = NS_FRAME_COMPLETE;
|
|
return NS_OK;
|
|
}
|
|
|
|
nsIAtom*
|
|
nsPageBreakFrame::GetType() const
|
|
{
|
|
return nsGkAtoms::pageBreakFrame;
|
|
}
|
|
|
|
|