mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
48fadfdbea
Important changes:
* Change base class of nsRuby{Base,Text}Frame to nsInlineFrame
* Make ComputeSize of nsRubyFrame and nsRubyBaseContainerFrame behavior like inline frames
380 lines
13 KiB
C++
380 lines
13 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=2 et sw=2 tw=80: */
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/* This Source Code is subject to the terms of the Mozilla Public License
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* version 2.0 (the "License"). You can obtain a copy of the License at
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* http://mozilla.org/MPL/2.0/. */
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/* rendering object for CSS "display: ruby-base-container" */
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#include "nsRubyBaseContainerFrame.h"
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#include "nsLineLayout.h"
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#include "nsPresContext.h"
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#include "nsStyleContext.h"
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#include "WritingModes.h"
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using namespace mozilla;
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#define RTC_ARRAY_SIZE 1
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//----------------------------------------------------------------------
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// Frame class boilerplate
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// =======================
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NS_QUERYFRAME_HEAD(nsRubyBaseContainerFrame)
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NS_QUERYFRAME_ENTRY(nsRubyBaseContainerFrame)
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NS_QUERYFRAME_TAIL_INHERITING(nsContainerFrame)
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NS_IMPL_FRAMEARENA_HELPERS(nsRubyBaseContainerFrame)
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nsContainerFrame*
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NS_NewRubyBaseContainerFrame(nsIPresShell* aPresShell,
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nsStyleContext* aContext)
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{
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return new (aPresShell) nsRubyBaseContainerFrame(aContext);
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}
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//----------------------------------------------------------------------
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// nsRubyBaseContainerFrame Method Implementations
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// ===============================================
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nsIAtom*
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nsRubyBaseContainerFrame::GetType() const
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{
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return nsGkAtoms::rubyBaseContainerFrame;
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}
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#ifdef DEBUG_FRAME_DUMP
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nsresult
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nsRubyBaseContainerFrame::GetFrameName(nsAString& aResult) const
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{
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return MakeFrameName(NS_LITERAL_STRING("RubyBaseContainer"), aResult);
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}
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#endif
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class MOZ_STACK_CLASS PairEnumerator
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{
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public:
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PairEnumerator(nsRubyBaseContainerFrame* aRBCFrame,
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const nsTArray<nsRubyTextContainerFrame*>& aRTCFrames);
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void Next();
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bool AtEnd() const;
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uint32_t GetLevelCount() const { return mFrames.Length(); }
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nsIFrame* GetFrame(uint32_t aIndex) const { return mFrames[aIndex]; }
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nsIFrame* GetBaseFrame() const { return GetFrame(0); }
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nsIFrame* GetTextFrame(uint32_t aIndex) const { return GetFrame(aIndex + 1); }
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private:
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nsAutoTArray<nsIFrame*, RTC_ARRAY_SIZE + 1> mFrames;
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};
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PairEnumerator::PairEnumerator(
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nsRubyBaseContainerFrame* aBaseContainer,
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const nsTArray<nsRubyTextContainerFrame*>& aTextContainers)
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{
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const uint32_t rtcCount = aTextContainers.Length();
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mFrames.SetCapacity(rtcCount + 1);
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mFrames.AppendElement(aBaseContainer->GetFirstPrincipalChild());
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for (uint32_t i = 0; i < rtcCount; i++) {
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nsIFrame* rtFrame = aTextContainers[i]->GetFirstPrincipalChild();
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mFrames.AppendElement(rtFrame);
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}
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}
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void
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PairEnumerator::Next()
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{
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for (uint32_t i = 0, iend = mFrames.Length(); i < iend; i++) {
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if (mFrames[i]) {
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mFrames[i] = mFrames[i]->GetNextSibling();
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}
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}
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}
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bool
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PairEnumerator::AtEnd() const
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{
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for (uint32_t i = 0, iend = mFrames.Length(); i < iend; i++) {
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if (mFrames[i]) {
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return false;
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}
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}
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return true;
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}
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nscoord
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nsRubyBaseContainerFrame::CalculateMaxSpanISize(
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nsRenderingContext* aRenderingContext)
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{
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nscoord max = 0;
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uint32_t spanCount = mSpanContainers.Length();
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for (uint32_t i = 0; i < spanCount; i++) {
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nsIFrame* frame = mSpanContainers[i]->GetFirstPrincipalChild();
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nscoord isize = frame->GetPrefISize(aRenderingContext);
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max = std::max(max, isize);
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}
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return max;
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}
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static nscoord
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CalculatePairPrefISize(nsRenderingContext* aRenderingContext,
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const PairEnumerator& aEnumerator)
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{
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nscoord max = 0;
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uint32_t levelCount = aEnumerator.GetLevelCount();
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for (uint32_t i = 0; i < levelCount; i++) {
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nsIFrame* frame = aEnumerator.GetFrame(i);
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if (frame) {
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max = std::max(max, frame->GetPrefISize(aRenderingContext));
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}
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}
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return max;
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}
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/* virtual */ void
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nsRubyBaseContainerFrame::AddInlineMinISize(
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nsRenderingContext *aRenderingContext, nsIFrame::InlineMinISizeData *aData)
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{
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if (!mSpanContainers.IsEmpty()) {
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// Since spans are not breakable internally, use our pref isize
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// directly if there is any span.
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aData->currentLine += GetPrefISize(aRenderingContext);
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return;
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}
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nscoord max = 0;
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PairEnumerator enumerator(this, mTextContainers);
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for (; !enumerator.AtEnd(); enumerator.Next()) {
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// We use *pref* isize for computing the min isize of pairs
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// because ruby bases and texts are unbreakable internally.
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max = std::max(max, CalculatePairPrefISize(aRenderingContext, enumerator));
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}
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aData->currentLine += max;
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}
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/* virtual */ void
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nsRubyBaseContainerFrame::AddInlinePrefISize(
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nsRenderingContext *aRenderingContext, nsIFrame::InlinePrefISizeData *aData)
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{
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nscoord sum = 0;
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PairEnumerator enumerator(this, mTextContainers);
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for (; !enumerator.AtEnd(); enumerator.Next()) {
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sum += CalculatePairPrefISize(aRenderingContext, enumerator);
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}
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sum = std::max(sum, CalculateMaxSpanISize(aRenderingContext));
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aData->currentLine += sum;
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}
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/* virtual */ bool
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nsRubyBaseContainerFrame::IsFrameOfType(uint32_t aFlags) const
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{
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return nsContainerFrame::IsFrameOfType(aFlags &
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~(nsIFrame::eLineParticipant));
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}
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void nsRubyBaseContainerFrame::AppendTextContainer(nsIFrame* aFrame)
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{
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nsRubyTextContainerFrame* rtcFrame = do_QueryFrame(aFrame);
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MOZ_ASSERT(rtcFrame, "Must provide a ruby text container.");
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nsIFrame* onlyChild = rtcFrame->PrincipalChildList().OnlyChild();
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if (onlyChild && onlyChild->IsPseudoFrame(rtcFrame->GetContent())) {
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// Per CSS Ruby spec, if the only child of an rtc frame is
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// a pseudo rt frame, it spans all bases in the segment.
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mSpanContainers.AppendElement(rtcFrame);
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} else {
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mTextContainers.AppendElement(rtcFrame);
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}
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}
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void nsRubyBaseContainerFrame::ClearTextContainers() {
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mSpanContainers.Clear();
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mTextContainers.Clear();
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}
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/* virtual */ bool
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nsRubyBaseContainerFrame::CanContinueTextRun() const
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{
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return true;
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}
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/* virtual */ LogicalSize
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nsRubyBaseContainerFrame::ComputeSize(nsRenderingContext *aRenderingContext,
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WritingMode aWM,
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const LogicalSize& aCBSize,
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nscoord aAvailableISize,
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const LogicalSize& aMargin,
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const LogicalSize& aBorder,
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const LogicalSize& aPadding,
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ComputeSizeFlags aFlags)
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{
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// Ruby base container frame is inline,
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// hence don't compute size before reflow.
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return LogicalSize(aWM, NS_UNCONSTRAINEDSIZE, NS_UNCONSTRAINEDSIZE);
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}
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/* virtual */ void
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nsRubyBaseContainerFrame::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("nsRubyBaseContainerFrame");
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DISPLAY_REFLOW(aPresContext, this, aReflowState, aDesiredSize, aStatus);
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if (!aReflowState.mLineLayout) {
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NS_ASSERTION(
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aReflowState.mLineLayout,
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"No line layout provided to RubyBaseContainerFrame reflow method.");
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aStatus = NS_FRAME_COMPLETE;
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return;
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}
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aStatus = NS_FRAME_COMPLETE;
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WritingMode lineWM = aReflowState.mLineLayout->GetWritingMode();
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WritingMode frameWM = aReflowState.GetWritingMode();
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LogicalSize availSize(lineWM, aReflowState.AvailableWidth(),
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aReflowState.AvailableHeight());
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const uint32_t rtcCount = mTextContainers.Length();
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const uint32_t spanCount = mSpanContainers.Length();
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const uint32_t totalCount = rtcCount + spanCount;
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// We have a reflow state and a line layout for each RTC.
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// They are conceptually the state of the RTCs, but we don't actually
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// reflow those RTCs in this code. These two arrays are holders of
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// the reflow states and line layouts.
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nsAutoTArray<UniquePtr<nsHTMLReflowState>, RTC_ARRAY_SIZE> reflowStates;
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nsAutoTArray<UniquePtr<nsLineLayout>, RTC_ARRAY_SIZE> lineLayouts;
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reflowStates.SetCapacity(totalCount);
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lineLayouts.SetCapacity(totalCount);
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nsAutoTArray<nsHTMLReflowState*, RTC_ARRAY_SIZE> rtcReflowStates;
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nsAutoTArray<nsHTMLReflowState*, RTC_ARRAY_SIZE> spanReflowStates;
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rtcReflowStates.SetCapacity(rtcCount);
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spanReflowStates.SetCapacity(spanCount);
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// Begin the line layout for each ruby text container in advance.
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for (uint32_t i = 0; i < totalCount; i++) {
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nsIFrame* textContainer;
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nsTArray<nsHTMLReflowState*>* reflowStateArray;
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if (i < rtcCount) {
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textContainer = mTextContainers[i];
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reflowStateArray = &rtcReflowStates;
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} else {
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textContainer = mSpanContainers[i - rtcCount];
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reflowStateArray = &spanReflowStates;
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}
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nsHTMLReflowState* reflowState = new nsHTMLReflowState(
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aPresContext, *aReflowState.parentReflowState, textContainer, availSize);
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reflowStates.AppendElement(reflowState);
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reflowStateArray->AppendElement(reflowState);
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nsLineLayout* lineLayout = new nsLineLayout(
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aPresContext, reflowState->mFloatManager, reflowState, nullptr);
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lineLayouts.AppendElement(lineLayout);
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// Line number is useless for ruby text
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// XXX nullptr here may cause problem, see comments for
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// nsLineLayout::mBlockRS and nsLineLayout::AddFloat
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lineLayout->Init(nullptr, reflowState->CalcLineHeight(), -1);
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reflowState->mLineLayout = lineLayout;
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LogicalMargin borderPadding = reflowState->ComputedLogicalBorderPadding();
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nscoord containerWidth =
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reflowState->ComputedWidth() + borderPadding.LeftRight(lineWM);
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lineLayout->BeginLineReflow(borderPadding.IStart(lineWM),
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borderPadding.BStart(lineWM),
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reflowState->ComputedISize(),
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NS_UNCONSTRAINEDSIZE,
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false, false, lineWM, containerWidth);
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}
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nscoord istart = aReflowState.mLineLayout->GetCurrentICoord();
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nscoord icoord = istart;
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// Reflow non-span annotations and bases
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for (PairEnumerator e(this, mTextContainers); !e.AtEnd(); e.Next()) {
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nscoord pairISize = 0;
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for (uint32_t i = 0; i < rtcCount; i++) {
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nsRubyTextFrame* rtFrame = do_QueryFrame(e.GetTextFrame(i));
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if (rtFrame) {
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nsReflowStatus reflowStatus;
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nsHTMLReflowMetrics metrics(*rtcReflowStates[i]);
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bool pushedFrame;
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rtcReflowStates[i]->mLineLayout->ReflowFrame(rtFrame, reflowStatus,
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&metrics, pushedFrame);
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NS_ASSERTION(!NS_INLINE_IS_BREAK(reflowStatus),
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"Ruby line breaking is not yet implemented");
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NS_ASSERTION(!pushedFrame, "Ruby line breaking is not yet implemented");
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pairISize = std::max(pairISize, metrics.ISize(lineWM));
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}
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}
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nsIFrame* rbFrame = e.GetBaseFrame();
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if (rbFrame) {
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MOZ_ASSERT(rbFrame->GetType() == nsGkAtoms::rubyBaseFrame);
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nsReflowStatus reflowStatus;
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nsHTMLReflowMetrics metrics(aReflowState);
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bool pushedFrame;
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aReflowState.mLineLayout->ReflowFrame(rbFrame, reflowStatus,
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&metrics, pushedFrame);
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NS_ASSERTION(!NS_INLINE_IS_BREAK(reflowStatus),
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"Ruby line breaking is not yet implemented");
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NS_ASSERTION(!pushedFrame, "Ruby line breaking is not yet implemented");
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pairISize = std::max(pairISize, metrics.ISize(lineWM));
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}
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// Align all the line layout to the new coordinate.
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icoord += pairISize;
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aReflowState.mLineLayout->AdvanceICoord(
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icoord - aReflowState.mLineLayout->GetCurrentICoord());
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for (uint32_t i = 0; i < rtcCount; i++) {
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nsLineLayout* lineLayout = rtcReflowStates[i]->mLineLayout;
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lineLayout->AdvanceICoord(icoord - lineLayout->GetCurrentICoord());
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}
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}
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// Reflow spans
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nscoord spanISize = 0;
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for (uint32_t i = 0; i < spanCount; i++) {
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nsRubyTextContainerFrame* container = mSpanContainers[i];
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nsIFrame* rtFrame = container->GetFirstPrincipalChild();
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nsReflowStatus reflowStatus;
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nsHTMLReflowMetrics metrics(*spanReflowStates[i]);
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bool pushedFrame;
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spanReflowStates[i]->mLineLayout->ReflowFrame(rtFrame, reflowStatus,
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&metrics, pushedFrame);
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NS_ASSERTION(!NS_INLINE_IS_BREAK(reflowStatus),
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"Ruby line breaking is not yet implemented");
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NS_ASSERTION(!pushedFrame, "Ruby line breaking is not yet implemented");
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spanISize = std::max(spanISize, metrics.ISize(lineWM));
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}
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nscoord isize = icoord - istart;
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if (isize < spanISize) {
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aReflowState.mLineLayout->AdvanceICoord(spanISize - isize);
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isize = spanISize;
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}
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for (uint32_t i = 0; i < totalCount; i++) {
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// It happens before the ruby text container is reflowed, and that
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// when it is reflowed, it will just use this size.
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nsRubyTextContainerFrame* textContainer = i < rtcCount ?
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mTextContainers[i] : mSpanContainers[i - rtcCount];
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textContainer->SetISize(isize);
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lineLayouts[i]->EndLineReflow();
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}
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LogicalMargin borderPadding = aReflowState.ComputedLogicalBorderPadding();
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aDesiredSize.ISize(lineWM) = isize;
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nsLayoutUtils::SetBSizeFromFontMetrics(this, aDesiredSize, aReflowState,
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borderPadding, lineWM, frameWM);
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}
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