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https://repo.dactyloidae.xyz/Dactyloidae/UXP.git
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import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo
This commit is contained in:
Roy Tam
commit
dcd9973243
150858 changed files with 23884658 additions and 0 deletions
747
layout/generic/nsPageFrame.cpp
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747
layout/generic/nsPageFrame.cpp
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "nsPageFrame.h"
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#include "mozilla/gfx/2D.h"
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#include "nsDeviceContext.h"
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#include "nsFontMetrics.h"
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#include "nsLayoutUtils.h"
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#include "nsPresContext.h"
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#include "nsRenderingContext.h"
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#include "nsGkAtoms.h"
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#include "nsIPresShell.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 "nsSimplePageSequenceFrame.h" // for nsSharedPageData
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#include "nsTextFormatter.h" // for page number localization formatting
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#include "nsBidiUtils.h"
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#include "nsIPrintSettings.h"
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#include "mozilla/Logging.h"
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extern mozilla::LazyLogModule gLayoutPrintingLog;
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#define PR_PL(_p1) MOZ_LOG(gLayoutPrintingLog, mozilla::LogLevel::Debug, _p1)
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using namespace mozilla;
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using namespace mozilla::gfx;
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nsPageFrame*
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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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NS_IMPL_FRAMEARENA_HELPERS(nsPageFrame)
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NS_QUERYFRAME_HEAD(nsPageFrame)
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NS_QUERYFRAME_ENTRY(nsPageFrame)
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NS_QUERYFRAME_TAIL_INHERITING(nsContainerFrame)
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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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void
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nsPageFrame::Reflow(nsPresContext* aPresContext,
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ReflowOutput& aDesiredSize,
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const ReflowInput& aReflowInput,
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nsReflowStatus& aStatus)
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{
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MarkInReflow();
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DO_GLOBAL_REFLOW_COUNT("nsPageFrame");
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DISPLAY_REFLOW(aPresContext, this, aReflowInput, aDesiredSize, aStatus);
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aStatus = NS_FRAME_COMPLETE; // initialize out parameter
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NS_ASSERTION(mFrames.FirstChild() &&
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nsGkAtoms::pageContentFrame == mFrames.FirstChild()->GetType(),
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"pageFrame must have a pageContentFrame child");
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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;
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}
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nsSize maxSize(mPD->mReflowSize.width, avHeight);
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float scale = aPresContext->GetPageScale();
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maxSize.width = NSToCoordCeil(maxSize.width / scale);
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if (maxSize.height != NS_UNCONSTRAINEDSIZE) {
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maxSize.height = NSToCoordCeil(maxSize.height / scale);
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}
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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.ClearSize();
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NS_WARNING("Reflow aborted; no space for content");
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return;
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}
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ReflowInput kidReflowInput(aPresContext, aReflowInput, frame,
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LogicalSize(frame->GetWritingMode(),
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maxSize));
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kidReflowInput.mFlags.mIsTopOfPage = true;
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kidReflowInput.mFlags.mTableIsSplittable = true;
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// Use the margins given in the @page rule.
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// If a margin is 'auto', use the margin from the print settings for that side.
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const nsStyleSides& marginStyle = kidReflowInput.mStyleMargin->mMargin;
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NS_FOR_CSS_SIDES(side) {
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if (marginStyle.GetUnit(side) == eStyleUnit_Auto) {
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mPageContentMargin.Side(side) = mPD->mReflowMargin.Side(side);
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} else {
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mPageContentMargin.Side(side) = kidReflowInput.ComputedPhysicalMargin().Side(side);
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}
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}
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nscoord maxWidth = maxSize.width - mPageContentMargin.LeftRight() / scale;
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nscoord maxHeight;
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if (maxSize.height == NS_UNCONSTRAINEDSIZE) {
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maxHeight = NS_UNCONSTRAINEDSIZE;
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} else {
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maxHeight = maxSize.height - mPageContentMargin.TopBottom() / scale;
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}
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// Check the width and height, if they're too small we reset the margins
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// back to the default.
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if (maxWidth < onePixelInTwips ||
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(maxHeight != NS_UNCONSTRAINEDSIZE && maxHeight < onePixelInTwips)) {
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NS_FOR_CSS_SIDES(side) {
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mPageContentMargin.Side(side) = mPD->mReflowMargin.Side(side);
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}
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maxWidth = maxSize.width - mPageContentMargin.LeftRight() / scale;
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if (maxHeight != NS_UNCONSTRAINEDSIZE) {
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maxHeight = maxSize.height - mPageContentMargin.TopBottom() / scale;
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}
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}
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kidReflowInput.SetComputedWidth(maxWidth);
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kidReflowInput.SetComputedHeight(maxHeight);
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// calc location of frame
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nscoord xc = mPageContentMargin.left;
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nscoord yc = mPageContentMargin.top;
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// Get the child's desired size
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ReflowChild(frame, aPresContext, aDesiredSize, kidReflowInput, xc, yc, 0, aStatus);
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// Place and size the child
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FinishReflowChild(frame, aPresContext, aDesiredSize, &kidReflowInput, xc, yc, 0);
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NS_ASSERTION(!NS_FRAME_IS_FULLY_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(),
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aReflowInput.AvailableWidth(), aReflowInput.AvailableHeight()));
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// Return our desired size
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WritingMode wm = aReflowInput.GetWritingMode();
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aDesiredSize.ISize(wm) = aReflowInput.AvailableISize();
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if (aReflowInput.AvailableBSize() != NS_UNCONSTRAINEDSIZE) {
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aDesiredSize.BSize(wm) = aReflowInput.AvailableBSize();
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}
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aDesiredSize.SetOverflowAreasToDesiredBounds();
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FinishAndStoreOverflow(&aDesiredSize);
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PR_PL(("PageFrame::Reflow %p ", this));
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PR_PL(("[%d,%d]\n", aReflowInput.AvailableWidth(), aReflowInput.AvailableHeight()));
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NS_FRAME_SET_TRUNCATION(aStatus, aReflowInput, aDesiredSize);
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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_FRAME_DUMP
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nsresult
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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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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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aNewStr.ReplaceSubstring(kDate.get(), mPD->mDateTimeStr.get());
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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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char16_t * uStr = nsTextFormatter::smprintf(mPD->mPageNumAndTotalsFormat.get(), mPageNum, mTotNumPages);
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aNewStr.ReplaceSubstring(kPageAndTotal.get(), uStr);
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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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char16_t * uStr = nsTextFormatter::smprintf(mPD->mPageNumFormat.get(), mPageNum);
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aNewStr.ReplaceSubstring(kPage.get(), uStr);
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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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aNewStr.ReplaceSubstring(kTitle.get(), mPD->mDocTitle.get());
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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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aNewStr.ReplaceSubstring(kDocURL.get(), mPD->mDocURL.get());
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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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char16_t * uStr = nsTextFormatter::smprintf(mPD->mPageNumFormat.get(), mTotNumPages);
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aNewStr.ReplaceSubstring(kPageTotal.get(), uStr);
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free(uStr);
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}
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}
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//------------------------------------------------------------------------------
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nscoord nsPageFrame::GetXPosition(nsRenderingContext& aRenderingContext,
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nsFontMetrics& aFontMetrics,
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const nsRect& aRect,
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int32_t aJust,
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const nsString& aStr)
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{
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nscoord width = nsLayoutUtils::AppUnitWidthOfStringBidi(aStr, this,
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aFontMetrics,
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aRenderingContext);
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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->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->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(nsRenderingContext& aRenderingContext,
|
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nsFontMetrics& aFontMetrics,
|
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nsHeaderFooterEnum aHeaderFooter,
|
||||
const nsString& aStrLeft,
|
||||
const nsString& aStrCenter,
|
||||
const nsString& aStrRight,
|
||||
const nsRect& aRect,
|
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nscoord aAscent,
|
||||
nscoord aHeight)
|
||||
{
|
||||
int32_t numStrs = 0;
|
||||
if (!aStrLeft.IsEmpty()) numStrs++;
|
||||
if (!aStrCenter.IsEmpty()) numStrs++;
|
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if (!aStrRight.IsEmpty()) numStrs++;
|
||||
|
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if (numStrs == 0) return;
|
||||
nscoord strSpace = aRect.width / numStrs;
|
||||
|
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if (!aStrLeft.IsEmpty()) {
|
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DrawHeaderFooter(aRenderingContext, aFontMetrics, aHeaderFooter,
|
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nsIPrintSettings::kJustLeft, aStrLeft, aRect, aAscent,
|
||||
aHeight, strSpace);
|
||||
}
|
||||
if (!aStrCenter.IsEmpty()) {
|
||||
DrawHeaderFooter(aRenderingContext, aFontMetrics, aHeaderFooter,
|
||||
nsIPrintSettings::kJustCenter, aStrCenter, aRect, aAscent,
|
||||
aHeight, strSpace);
|
||||
}
|
||||
if (!aStrRight.IsEmpty()) {
|
||||
DrawHeaderFooter(aRenderingContext, aFontMetrics, aHeaderFooter,
|
||||
nsIPrintSettings::kJustRight, aStrRight, aRect, aAscent,
|
||||
aHeight, strSpace);
|
||||
}
|
||||
}
|
||||
|
||||
// Draw a header or footer string
|
||||
// @param aRenderingContext - rendering context to draw into
|
||||
// @param aHeaderFooter - indicates whether it is a header or footer
|
||||
// @param aJust - indicates where the string is located within the header/footer
|
||||
// @param aStr - the string to be drawn
|
||||
// @param aRect - the rect of the page
|
||||
// @param aHeight - the height of the font
|
||||
// @param aAscent - the ascent of the font
|
||||
// @param aWidth - available width for the string
|
||||
void
|
||||
nsPageFrame::DrawHeaderFooter(nsRenderingContext& aRenderingContext,
|
||||
nsFontMetrics& aFontMetrics,
|
||||
nsHeaderFooterEnum aHeaderFooter,
|
||||
int32_t aJust,
|
||||
const nsString& aStr,
|
||||
const nsRect& aRect,
|
||||
nscoord aAscent,
|
||||
nscoord aHeight,
|
||||
nscoord aWidth)
|
||||
{
|
||||
|
||||
nscoord contentWidth = aWidth - (mPD->mEdgePaperMargin.left + mPD->mEdgePaperMargin.right);
|
||||
|
||||
gfxContext* gfx = aRenderingContext.ThebesContext();
|
||||
DrawTarget* drawTarget = aRenderingContext.GetDrawTarget();
|
||||
|
||||
if ((aHeaderFooter == eHeader && aHeight < mPageContentMargin.top) ||
|
||||
(aHeaderFooter == eFooter && aHeight < mPageContentMargin.bottom)) {
|
||||
nsAutoString str;
|
||||
ProcessSpecialCodes(aStr, str);
|
||||
|
||||
int32_t indx;
|
||||
int32_t textWidth = 0;
|
||||
const char16_t* text = str.get();
|
||||
|
||||
int32_t len = (int32_t)str.Length();
|
||||
if (len == 0) {
|
||||
return; // bail is empty string
|
||||
}
|
||||
// find how much text fits, the "position" is the size of the available area
|
||||
if (nsLayoutUtils::BinarySearchForPosition(drawTarget, aFontMetrics, text,
|
||||
0, 0, 0, len,
|
||||
int32_t(contentWidth), indx,
|
||||
textWidth)) {
|
||||
if (indx < len-1 ) {
|
||||
// we can't fit in all the text
|
||||
if (indx > 3) {
|
||||
// But we can fit in at least 4 chars. Show all but 3 of them, then
|
||||
// an ellipsis.
|
||||
// XXXbz for non-plane0 text, this may be cutting things in the
|
||||
// middle of a codepoint! Also, we have no guarantees that the three
|
||||
// dots will fit in the space the three chars we removed took up with
|
||||
// these font metrics!
|
||||
str.Truncate(indx-3);
|
||||
str.AppendLiteral("...");
|
||||
} else {
|
||||
// We can only fit 3 or fewer chars. Just show nothing
|
||||
str.Truncate();
|
||||
}
|
||||
}
|
||||
} else {
|
||||
return; // bail if couldn't find the correct length
|
||||
}
|
||||
|
||||
if (HasRTLChars(str)) {
|
||||
PresContext()->SetBidiEnabled();
|
||||
}
|
||||
|
||||
// cacl the x and y positions of the text
|
||||
nscoord x = GetXPosition(aRenderingContext, aFontMetrics, aRect, aJust, str);
|
||||
nscoord y;
|
||||
if (aHeaderFooter == eHeader) {
|
||||
y = aRect.y + mPD->mEdgePaperMargin.top;
|
||||
} else {
|
||||
y = aRect.YMost() - aHeight - mPD->mEdgePaperMargin.bottom;
|
||||
}
|
||||
|
||||
// set up new clip and draw the text
|
||||
gfx->Save();
|
||||
gfx->Clip(NSRectToSnappedRect(aRect, PresContext()->AppUnitsPerDevPixel(),
|
||||
*drawTarget));
|
||||
gfx->SetColor(Color(0.f, 0.f, 0.f));
|
||||
nsLayoutUtils::DrawString(this, aFontMetrics, &aRenderingContext,
|
||||
str.get(), str.Length(),
|
||||
nsPoint(x, y + aAscent));
|
||||
gfx->Restore();
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Remove all leaf display items that are not for descendants of
|
||||
* aBuilder->GetReferenceFrame() from aList.
|
||||
* @param aPage the page we're constructing the display list for
|
||||
* @param aExtraPage the page we constructed aList for
|
||||
* @param aList the list that is modified in-place
|
||||
*/
|
||||
static void
|
||||
PruneDisplayListForExtraPage(nsDisplayListBuilder* aBuilder,
|
||||
nsPageFrame* aPage, nsIFrame* aExtraPage,
|
||||
nsDisplayList* aList)
|
||||
{
|
||||
nsDisplayList newList;
|
||||
|
||||
while (true) {
|
||||
nsDisplayItem* i = aList->RemoveBottom();
|
||||
if (!i)
|
||||
break;
|
||||
nsDisplayList* subList = i->GetSameCoordinateSystemChildren();
|
||||
if (subList) {
|
||||
PruneDisplayListForExtraPage(aBuilder, aPage, aExtraPage, subList);
|
||||
i->UpdateBounds(aBuilder);
|
||||
} else {
|
||||
nsIFrame* f = i->Frame();
|
||||
if (!nsLayoutUtils::IsProperAncestorFrameCrossDoc(aPage, f)) {
|
||||
// We're throwing this away so call its destructor now. The memory
|
||||
// is owned by aBuilder which destroys all items at once.
|
||||
i->~nsDisplayItem();
|
||||
continue;
|
||||
}
|
||||
}
|
||||
newList.AppendToTop(i);
|
||||
}
|
||||
aList->AppendToTop(&newList);
|
||||
}
|
||||
|
||||
static void
|
||||
BuildDisplayListForExtraPage(nsDisplayListBuilder* aBuilder,
|
||||
nsPageFrame* aPage, nsIFrame* aExtraPage,
|
||||
const nsRect& aDirtyRect, nsDisplayList* aList)
|
||||
{
|
||||
// The only content in aExtraPage we care about is out-of-flow content whose
|
||||
// placeholders have occurred in aPage. If
|
||||
// NS_FRAME_FORCE_DISPLAY_LIST_DESCEND_INTO is not set, then aExtraPage has
|
||||
// no such content.
|
||||
if (!aExtraPage->HasAnyStateBits(NS_FRAME_FORCE_DISPLAY_LIST_DESCEND_INTO)) {
|
||||
return;
|
||||
}
|
||||
nsDisplayList list;
|
||||
aExtraPage->BuildDisplayListForStackingContext(aBuilder, aDirtyRect, &list);
|
||||
PruneDisplayListForExtraPage(aBuilder, aPage, aExtraPage, &list);
|
||||
aList->AppendToTop(&list);
|
||||
}
|
||||
|
||||
static nsIFrame*
|
||||
GetNextPage(nsIFrame* aPageContentFrame)
|
||||
{
|
||||
// XXX ugh
|
||||
nsIFrame* pageFrame = aPageContentFrame->GetParent();
|
||||
NS_ASSERTION(pageFrame->GetType() == nsGkAtoms::pageFrame,
|
||||
"pageContentFrame has unexpected parent");
|
||||
nsIFrame* nextPageFrame = pageFrame->GetNextSibling();
|
||||
if (!nextPageFrame)
|
||||
return nullptr;
|
||||
NS_ASSERTION(nextPageFrame->GetType() == nsGkAtoms::pageFrame,
|
||||
"pageFrame's sibling is not a page frame...");
|
||||
nsIFrame* f = nextPageFrame->PrincipalChildList().FirstChild();
|
||||
NS_ASSERTION(f, "pageFrame has no page content frame!");
|
||||
NS_ASSERTION(f->GetType() == nsGkAtoms::pageContentFrame,
|
||||
"pageFrame's child is not page content!");
|
||||
return f;
|
||||
}
|
||||
|
||||
static gfx::Matrix4x4 ComputePageTransform(nsIFrame* aFrame, float aAppUnitsPerPixel)
|
||||
{
|
||||
float scale = aFrame->PresContext()->GetPageScale();
|
||||
return gfx::Matrix4x4::Scaling(scale, scale, 1);
|
||||
}
|
||||
|
||||
class nsDisplayHeaderFooter : public nsDisplayItem {
|
||||
public:
|
||||
nsDisplayHeaderFooter(nsDisplayListBuilder* aBuilder, nsPageFrame *aFrame)
|
||||
: nsDisplayItem(aBuilder, aFrame)
|
||||
, mDisableSubpixelAA(false)
|
||||
{
|
||||
MOZ_COUNT_CTOR(nsDisplayHeaderFooter);
|
||||
}
|
||||
#ifdef NS_BUILD_REFCNT_LOGGING
|
||||
virtual ~nsDisplayHeaderFooter() {
|
||||
MOZ_COUNT_DTOR(nsDisplayHeaderFooter);
|
||||
}
|
||||
#endif
|
||||
|
||||
virtual void Paint(nsDisplayListBuilder* aBuilder,
|
||||
nsRenderingContext* aCtx) override {
|
||||
#ifdef DEBUG
|
||||
nsPageFrame* pageFrame = do_QueryFrame(mFrame);
|
||||
MOZ_ASSERT(pageFrame, "We should have an nsPageFrame");
|
||||
#endif
|
||||
static_cast<nsPageFrame*>(mFrame)->
|
||||
PaintHeaderFooter(*aCtx, ToReferenceFrame(), mDisableSubpixelAA);
|
||||
}
|
||||
NS_DISPLAY_DECL_NAME("HeaderFooter", nsDisplayItem::TYPE_HEADER_FOOTER)
|
||||
|
||||
virtual nsRect GetComponentAlphaBounds(nsDisplayListBuilder* aBuilder) override {
|
||||
bool snap;
|
||||
return GetBounds(aBuilder, &snap);
|
||||
}
|
||||
|
||||
virtual void DisableComponentAlpha() override {
|
||||
mDisableSubpixelAA = true;
|
||||
}
|
||||
protected:
|
||||
bool mDisableSubpixelAA;
|
||||
};
|
||||
|
||||
//------------------------------------------------------------------------------
|
||||
void
|
||||
nsPageFrame::BuildDisplayList(nsDisplayListBuilder* aBuilder,
|
||||
const nsRect& aDirtyRect,
|
||||
const nsDisplayListSet& aLists)
|
||||
{
|
||||
nsDisplayListCollection set;
|
||||
|
||||
if (PresContext()->IsScreen()) {
|
||||
DisplayBorderBackgroundOutline(aBuilder, aLists);
|
||||
}
|
||||
|
||||
nsIFrame *child = mFrames.FirstChild();
|
||||
float scale = PresContext()->GetPageScale();
|
||||
nsRect clipRect(nsPoint(0, 0), child->GetSize());
|
||||
// Note: this computation matches how we compute maxSize.height
|
||||
// in nsPageFrame::Reflow
|
||||
nscoord expectedPageContentHeight = NSToCoordCeil(GetSize().height / scale);
|
||||
if (clipRect.height > expectedPageContentHeight) {
|
||||
// We're doing print-selection, with one long page-content frame.
|
||||
// Clip to the appropriate page-content slice for the current page.
|
||||
NS_ASSERTION(mPageNum > 0, "page num should be positive");
|
||||
// Note: The pageContentFrame's y-position has been set such that a zero
|
||||
// y-value matches the top edge of the current page. So, to clip to the
|
||||
// current page's content (in coordinates *relative* to the page content
|
||||
// frame), we just negate its y-position and add the top margin.
|
||||
clipRect.y = NSToCoordCeil((-child->GetRect().y +
|
||||
mPD->mReflowMargin.top) / scale);
|
||||
clipRect.height = expectedPageContentHeight;
|
||||
NS_ASSERTION(clipRect.y < child->GetSize().height,
|
||||
"Should be clipping to region inside the page content bounds");
|
||||
}
|
||||
clipRect += aBuilder->ToReferenceFrame(child);
|
||||
|
||||
nsDisplayList content;
|
||||
{
|
||||
DisplayListClipState::AutoSaveRestore clipState(aBuilder);
|
||||
|
||||
// Overwrite current clip, since we're going to wrap in a transform
|
||||
// and the current clip is no longer meaningful.
|
||||
clipState.Clear();
|
||||
clipState.ClipContainingBlockDescendants(clipRect, nullptr);
|
||||
|
||||
nsRect dirtyRect = child->GetVisualOverflowRectRelativeToSelf();
|
||||
child->BuildDisplayListForStackingContext(aBuilder, dirtyRect, &content);
|
||||
|
||||
// We may need to paint out-of-flow frames whose placeholders are
|
||||
// on other pages. Add those pages to our display list. Note that
|
||||
// out-of-flow frames can't be placed after their placeholders so
|
||||
// we don't have to process earlier pages. The display lists for
|
||||
// these extra pages are pruned so that only display items for the
|
||||
// page we currently care about (which we would have reached by
|
||||
// following placeholders to their out-of-flows) end up on the list.
|
||||
nsIFrame* page = child;
|
||||
while ((page = GetNextPage(page)) != nullptr) {
|
||||
BuildDisplayListForExtraPage(aBuilder, this, page,
|
||||
dirtyRect + child->GetOffsetTo(page), &content);
|
||||
}
|
||||
|
||||
// Invoke AutoBuildingDisplayList to ensure that the correct dirtyRect
|
||||
// is used to compute the visible rect if AddCanvasBackgroundColorItem
|
||||
// creates a display item.
|
||||
nsDisplayListBuilder::AutoBuildingDisplayList
|
||||
building(aBuilder, child, dirtyRect, true);
|
||||
|
||||
// Add the canvas background color to the bottom of the list. This
|
||||
// happens after we've built the list so that AddCanvasBackgroundColorItem
|
||||
// can monkey with the contents if necessary.
|
||||
nsRect backgroundRect =
|
||||
nsRect(aBuilder->ToReferenceFrame(child), child->GetSize());
|
||||
PresContext()->GetPresShell()->AddCanvasBackgroundColorItem(
|
||||
*aBuilder, content, child, backgroundRect, NS_RGBA(0,0,0,0));
|
||||
}
|
||||
|
||||
content.AppendNewToTop(new (aBuilder) nsDisplayTransform(aBuilder, child,
|
||||
&content, content.GetVisibleRect(), ::ComputePageTransform));
|
||||
|
||||
set.Content()->AppendToTop(&content);
|
||||
|
||||
if (PresContext()->IsRootPaginatedDocument()) {
|
||||
set.Content()->AppendNewToTop(new (aBuilder)
|
||||
nsDisplayHeaderFooter(aBuilder, this));
|
||||
}
|
||||
|
||||
set.MoveTo(aLists);
|
||||
}
|
||||
|
||||
//------------------------------------------------------------------------------
|
||||
void
|
||||
nsPageFrame::SetPageNumInfo(int32_t aPageNumber, int32_t aTotalPages)
|
||||
{
|
||||
mPageNum = aPageNumber;
|
||||
mTotNumPages = aTotalPages;
|
||||
}
|
||||
|
||||
|
||||
void
|
||||
nsPageFrame::PaintHeaderFooter(nsRenderingContext& aRenderingContext,
|
||||
nsPoint aPt, bool aDisableSubpixelAA)
|
||||
{
|
||||
nsPresContext* pc = PresContext();
|
||||
|
||||
if (!mPD->mPrintSettings) {
|
||||
if (pc->Type() == nsPresContext::eContext_PrintPreview || pc->IsDynamic())
|
||||
mPD->mPrintSettings = pc->GetPrintSettings();
|
||||
if (!mPD->mPrintSettings)
|
||||
return;
|
||||
}
|
||||
|
||||
nsRect rect(aPt, mRect.Size());
|
||||
aRenderingContext.ThebesContext()->SetColor(Color(0.f, 0.f, 0.f));
|
||||
|
||||
DrawTargetAutoDisableSubpixelAntialiasing
|
||||
disable(aRenderingContext.GetDrawTarget(), aDisableSubpixelAA);
|
||||
|
||||
// Get the FontMetrics to determine width.height of strings
|
||||
nsFontMetrics::Params params;
|
||||
params.userFontSet = pc->GetUserFontSet();
|
||||
params.textPerf = pc->GetTextPerfMetrics();
|
||||
RefPtr<nsFontMetrics> fontMet =
|
||||
pc->DeviceContext()->GetMetricsFor(mPD->mHeadFootFont, params);
|
||||
|
||||
nscoord ascent = 0;
|
||||
nscoord visibleHeight = 0;
|
||||
if (fontMet) {
|
||||
visibleHeight = fontMet->MaxHeight();
|
||||
ascent = fontMet->MaxAscent();
|
||||
}
|
||||
|
||||
// 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, *fontMet, 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, *fontMet, eFooter,
|
||||
footerLeft, footerCenter, footerRight,
|
||||
rect, ascent, visibleHeight);
|
||||
}
|
||||
|
||||
void
|
||||
nsPageFrame::SetSharedPageData(nsSharedPageData* aPD)
|
||||
{
|
||||
mPD = aPD;
|
||||
// Set the shared data into the page frame before reflow
|
||||
nsPageContentFrame * pcf = 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);
|
||||
}
|
||||
|
||||
NS_IMPL_FRAMEARENA_HELPERS(nsPageBreakFrame)
|
||||
|
||||
nsPageBreakFrame::nsPageBreakFrame(nsStyleContext* aContext) :
|
||||
nsLeafFrame(aContext), mHaveReflowed(false)
|
||||
{
|
||||
}
|
||||
|
||||
nsPageBreakFrame::~nsPageBreakFrame()
|
||||
{
|
||||
}
|
||||
|
||||
nscoord
|
||||
nsPageBreakFrame::GetIntrinsicISize()
|
||||
{
|
||||
return nsPresContext::CSSPixelsToAppUnits(1);
|
||||
}
|
||||
|
||||
nscoord
|
||||
nsPageBreakFrame::GetIntrinsicBSize()
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
void
|
||||
nsPageBreakFrame::Reflow(nsPresContext* aPresContext,
|
||||
ReflowOutput& aDesiredSize,
|
||||
const ReflowInput& aReflowInput,
|
||||
nsReflowStatus& aStatus)
|
||||
{
|
||||
DO_GLOBAL_REFLOW_COUNT("nsPageBreakFrame");
|
||||
DISPLAY_REFLOW(aPresContext, this, aReflowInput, aDesiredSize, aStatus);
|
||||
|
||||
// Override reflow, since we don't want to deal with what our
|
||||
// computed values are.
|
||||
WritingMode wm = aReflowInput.GetWritingMode();
|
||||
LogicalSize finalSize(wm, GetIntrinsicISize(),
|
||||
aReflowInput.AvailableBSize() == NS_UNCONSTRAINEDSIZE ?
|
||||
0 : aReflowInput.AvailableBSize());
|
||||
// round the height down to the nearest pixel
|
||||
finalSize.BSize(wm) -=
|
||||
finalSize.BSize(wm) % nsPresContext::CSSPixelsToAppUnits(1);
|
||||
aDesiredSize.SetSize(wm, finalSize);
|
||||
|
||||
// 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 = true;
|
||||
aStatus = NS_FRAME_COMPLETE;
|
||||
}
|
||||
|
||||
nsIAtom*
|
||||
nsPageBreakFrame::GetType() const
|
||||
{
|
||||
return nsGkAtoms::pageBreakFrame;
|
||||
}
|
||||
|
||||
#ifdef DEBUG_FRAME_DUMP
|
||||
nsresult
|
||||
nsPageBreakFrame::GetFrameName(nsAString& aResult) const
|
||||
{
|
||||
return MakeFrameName(NS_LITERAL_STRING("PageBreak"), aResult);
|
||||
}
|
||||
#endif
|
||||
Loading…
Add table
Add a link
Reference in a new issue