forked from mirrors/gecko-dev
b71747b2ac
The new name makes the sense of the condition much clearer. E.g. compare: NS_WARN_IF_FALSE(!rv.Failed()); with: NS_WARNING_ASSERTION(!rv.Failed()); The new name also makes it clearer that it only has effect in debug builds, because that's standard for assertions. --HG-- extra : rebase_source : 886e57a9e433e0cb6ed635cc075b34b7ebf81853
834 lines
31 KiB
C++
834 lines
31 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 "nsRubyTextContainerFrame.h"
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#include "nsRubyBaseFrame.h"
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#include "nsRubyTextFrame.h"
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#include "mozilla/DebugOnly.h"
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#include "mozilla/Maybe.h"
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#include "mozilla/WritingModes.h"
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#include "nsLayoutUtils.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 "nsStyleStructInlines.h"
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#include "nsTextFrame.h"
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#include "RubyUtils.h"
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using namespace mozilla;
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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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static gfxBreakPriority
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LineBreakBefore(nsIFrame* aFrame,
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DrawTarget* aDrawTarget,
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nsIFrame* aLineContainerFrame,
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const nsLineList::iterator* aLine)
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{
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for (nsIFrame* child = aFrame; child;
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child = child->PrincipalChildList().FirstChild()) {
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if (!child->CanContinueTextRun()) {
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// It is not an inline element. We can break before it.
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return gfxBreakPriority::eNormalBreak;
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}
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if (child->GetType() != nsGkAtoms::textFrame) {
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continue;
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}
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auto textFrame = static_cast<nsTextFrame*>(child);
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gfxSkipCharsIterator iter =
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textFrame->EnsureTextRun(nsTextFrame::eInflated, aDrawTarget,
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aLineContainerFrame, aLine);
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iter.SetOriginalOffset(textFrame->GetContentOffset());
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uint32_t pos = iter.GetSkippedOffset();
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gfxTextRun* textRun = textFrame->GetTextRun(nsTextFrame::eInflated);
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if (pos >= textRun->GetLength()) {
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// The text frame contains no character at all.
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return gfxBreakPriority::eNoBreak;
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}
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// Return whether we can break before the first character.
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if (textRun->CanBreakLineBefore(pos)) {
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return gfxBreakPriority::eNormalBreak;
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}
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// Check whether we can wrap word here.
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const nsStyleText* textStyle = textFrame->StyleText();
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if (textStyle->WordCanWrap(textFrame) && textRun->IsClusterStart(pos)) {
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return gfxBreakPriority::eWordWrapBreak;
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}
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// We cannot break before.
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return gfxBreakPriority::eNoBreak;
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}
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// Neither block, nor text frame is found as a leaf. We won't break
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// before this base frame. It is the behavior of empty spans.
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return gfxBreakPriority::eNoBreak;
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}
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static void
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GetIsLineBreakAllowed(nsIFrame* aFrame, bool aIsLineBreakable,
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bool* aAllowInitialLineBreak, bool* aAllowLineBreak)
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{
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nsIFrame* parent = aFrame->GetParent();
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bool lineBreakSuppressed = parent->StyleContext()->ShouldSuppressLineBreak();
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// Allow line break between ruby bases when white-space allows,
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// we are not inside a nested ruby, and there is no span.
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bool allowLineBreak = !lineBreakSuppressed &&
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aFrame->StyleText()->WhiteSpaceCanWrap(aFrame);
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bool allowInitialLineBreak = allowLineBreak;
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if (!aFrame->GetPrevInFlow()) {
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allowInitialLineBreak = !lineBreakSuppressed &&
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parent->StyleText()->WhiteSpaceCanWrap(parent);
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}
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if (!aIsLineBreakable) {
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allowInitialLineBreak = false;
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}
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*aAllowInitialLineBreak = allowInitialLineBreak;
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*aAllowLineBreak = allowLineBreak;
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}
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/**
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* @param aBaseISizeData is an in/out param. This method updates the
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* `skipWhitespace` and `trailingWhitespace` fields of the struct with
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* the base level frame. Note that we don't need to do the same thing
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* for ruby text frames, because they are text run container themselves
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* (see nsTextFrame.cpp:BuildTextRuns), and thus no whitespace collapse
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* happens across the boundary of those frames.
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*/
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static nscoord
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CalculateColumnPrefISize(nsRenderingContext* aRenderingContext,
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const RubyColumnEnumerator& aEnumerator,
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nsIFrame::InlineIntrinsicISizeData* aBaseISizeData)
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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.GetFrameAtLevel(i);
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if (frame) {
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nsIFrame::InlinePrefISizeData data;
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if (i == 0) {
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data.SetLineContainer(aBaseISizeData->LineContainer());
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data.mSkipWhitespace = aBaseISizeData->mSkipWhitespace;
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data.mTrailingWhitespace = aBaseISizeData->mTrailingWhitespace;
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} else {
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// The line container of ruby text frames is their parent,
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// ruby text container frame.
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data.SetLineContainer(frame->GetParent());
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}
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frame->AddInlinePrefISize(aRenderingContext, &data);
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MOZ_ASSERT(data.mPrevLines == 0, "Shouldn't have prev lines");
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max = std::max(max, data.mCurrentLine);
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if (i == 0) {
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aBaseISizeData->mSkipWhitespace = data.mSkipWhitespace;
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aBaseISizeData->mTrailingWhitespace = data.mTrailingWhitespace;
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}
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}
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}
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return max;
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}
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// FIXME Currently we use pref isize of ruby content frames for
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// computing min isize of ruby frame, which may cause problem.
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// See bug 1134945.
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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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AutoRubyTextContainerArray textContainers(this);
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for (uint32_t i = 0, iend = textContainers.Length(); i < iend; i++) {
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if (textContainers[i]->IsSpanContainer()) {
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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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nsIFrame::InlinePrefISizeData data;
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data.SetLineContainer(aData->LineContainer());
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data.mSkipWhitespace = aData->mSkipWhitespace;
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data.mTrailingWhitespace = aData->mTrailingWhitespace;
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AddInlinePrefISize(aRenderingContext, &data);
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aData->mCurrentLine += data.mCurrentLine;
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if (data.mCurrentLine > 0) {
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aData->mAtStartOfLine = false;
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}
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aData->mSkipWhitespace = data.mSkipWhitespace;
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aData->mTrailingWhitespace = data.mTrailingWhitespace;
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return;
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}
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}
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bool firstFrame = true;
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bool allowInitialLineBreak, allowLineBreak;
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GetIsLineBreakAllowed(this, !aData->mAtStartOfLine,
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&allowInitialLineBreak, &allowLineBreak);
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for (nsIFrame* frame = this; frame; frame = frame->GetNextInFlow()) {
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RubyColumnEnumerator enumerator(
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static_cast<nsRubyBaseContainerFrame*>(frame), textContainers);
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for (; !enumerator.AtEnd(); enumerator.Next()) {
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if (firstFrame ? allowInitialLineBreak : allowLineBreak) {
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nsIFrame* baseFrame = enumerator.GetFrameAtLevel(0);
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if (baseFrame) {
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gfxBreakPriority breakPriority =
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LineBreakBefore(baseFrame, aRenderingContext->GetDrawTarget(),
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nullptr, nullptr);
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if (breakPriority != gfxBreakPriority::eNoBreak) {
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aData->OptionallyBreak();
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}
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}
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}
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firstFrame = false;
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nscoord isize = CalculateColumnPrefISize(aRenderingContext,
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enumerator, aData);
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aData->mCurrentLine += isize;
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if (isize > 0) {
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aData->mAtStartOfLine = false;
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}
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}
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}
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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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AutoRubyTextContainerArray textContainers(this);
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nscoord sum = 0;
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for (nsIFrame* frame = this; frame; frame = frame->GetNextInFlow()) {
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RubyColumnEnumerator enumerator(
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static_cast<nsRubyBaseContainerFrame*>(frame), textContainers);
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for (; !enumerator.AtEnd(); enumerator.Next()) {
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sum += CalculateColumnPrefISize(aRenderingContext, enumerator, aData);
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}
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}
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for (uint32_t i = 0, iend = textContainers.Length(); i < iend; i++) {
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if (textContainers[i]->IsSpanContainer()) {
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nsIFrame* frame = textContainers[i]->PrincipalChildList().FirstChild();
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nsIFrame::InlinePrefISizeData data;
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frame->AddInlinePrefISize(aRenderingContext, &data);
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MOZ_ASSERT(data.mPrevLines == 0, "Shouldn't have prev lines");
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sum = std::max(sum, data.mCurrentLine);
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}
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}
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aData->mCurrentLine += 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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if (aFlags & eSupportsCSSTransforms) {
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return false;
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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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/* 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 */ nscoord
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nsRubyBaseContainerFrame::GetLogicalBaseline(WritingMode aWritingMode) const
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{
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return mBaseline;
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}
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struct nsRubyBaseContainerFrame::RubyReflowInput
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{
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bool mAllowInitialLineBreak;
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bool mAllowLineBreak;
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const AutoRubyTextContainerArray& mTextContainers;
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const ReflowInput& mBaseReflowInput;
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const nsTArray<UniquePtr<ReflowInput>>& mTextReflowInputs;
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};
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/* virtual */ void
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nsRubyBaseContainerFrame::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("nsRubyBaseContainerFrame");
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DISPLAY_REFLOW(aPresContext, this, aReflowInput, aDesiredSize, aStatus);
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aStatus = NS_FRAME_COMPLETE;
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if (!aReflowInput.mLineLayout) {
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NS_ASSERTION(
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aReflowInput.mLineLayout,
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"No line layout provided to RubyBaseContainerFrame reflow method.");
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return;
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}
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MoveOverflowToChildList();
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// Ask text containers to drain overflows
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AutoRubyTextContainerArray textContainers(this);
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const uint32_t rtcCount = textContainers.Length();
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for (uint32_t i = 0; i < rtcCount; i++) {
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textContainers[i]->MoveOverflowToChildList();
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}
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WritingMode lineWM = aReflowInput.mLineLayout->GetWritingMode();
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LogicalSize availSize(lineWM, aReflowInput.AvailableISize(),
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aReflowInput.AvailableBSize());
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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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// Since there are pointers refer to reflow states and line layouts,
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// it is necessary to guarantee that they won't be moved. For this
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// reason, they are wrapped in UniquePtr here.
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AutoTArray<UniquePtr<ReflowInput>, RTC_ARRAY_SIZE> reflowInputs;
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AutoTArray<UniquePtr<nsLineLayout>, RTC_ARRAY_SIZE> lineLayouts;
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reflowInputs.SetCapacity(rtcCount);
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lineLayouts.SetCapacity(rtcCount);
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// Begin the line layout for each ruby text container in advance.
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bool hasSpan = false;
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for (uint32_t i = 0; i < rtcCount; i++) {
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nsRubyTextContainerFrame* textContainer = textContainers[i];
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if (textContainer->IsSpanContainer()) {
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hasSpan = true;
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}
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ReflowInput* reflowInput = new ReflowInput(
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aPresContext, *aReflowInput.mParentReflowInput, textContainer,
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availSize.ConvertTo(textContainer->GetWritingMode(), lineWM));
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reflowInputs.AppendElement(reflowInput);
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nsLineLayout* lineLayout = new nsLineLayout(aPresContext,
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reflowInput->mFloatManager,
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reflowInput, nullptr,
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aReflowInput.mLineLayout);
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lineLayout->SetSuppressLineWrap(true);
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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::mBlockRI and nsLineLayout::AddFloat
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lineLayout->Init(nullptr, reflowInput->CalcLineHeight(), -1);
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reflowInput->mLineLayout = lineLayout;
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// Border and padding are suppressed on ruby text containers.
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// If the writing mode is vertical-rl, the horizontal position of
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// rt frames will be updated when reflowing this text container,
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// hence leave container size 0 here for now.
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lineLayout->BeginLineReflow(0, 0, reflowInput->ComputedISize(),
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NS_UNCONSTRAINEDSIZE,
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false, false, lineWM, nsSize(0, 0));
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lineLayout->AttachRootFrameToBaseLineLayout();
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}
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aReflowInput.mLineLayout->BeginSpan(this, &aReflowInput,
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0, aReflowInput.AvailableISize(),
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&mBaseline);
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bool allowInitialLineBreak, allowLineBreak;
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GetIsLineBreakAllowed(this, aReflowInput.mLineLayout->LineIsBreakable(),
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&allowInitialLineBreak, &allowLineBreak);
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nscoord isize = 0;
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// Reflow columns excluding any span
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RubyReflowInput reflowInput = {
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allowInitialLineBreak, allowLineBreak && !hasSpan,
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textContainers, aReflowInput, reflowInputs
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};
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isize = ReflowColumns(reflowInput, aStatus);
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DebugOnly<nscoord> lineSpanSize = aReflowInput.mLineLayout->EndSpan(this);
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aDesiredSize.ISize(lineWM) = isize;
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// When there are no frames inside the ruby base container, EndSpan
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// will return 0. However, in this case, the actual width of the
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// container could be non-zero because of non-empty ruby annotations.
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// XXX When bug 765861 gets fixed, this warning should be upgraded.
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NS_WARNING_ASSERTION(
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NS_INLINE_IS_BREAK(aStatus) || isize == lineSpanSize || mFrames.IsEmpty(),
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"bad isize");
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// If there exists any span, the columns must either be completely
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// reflowed, or be not reflowed at all.
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MOZ_ASSERT(NS_INLINE_IS_BREAK_BEFORE(aStatus) ||
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NS_FRAME_IS_COMPLETE(aStatus) || !hasSpan);
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if (!NS_INLINE_IS_BREAK_BEFORE(aStatus) &&
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NS_FRAME_IS_COMPLETE(aStatus) && hasSpan) {
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// Reflow spans
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RubyReflowInput reflowInput = {
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false, false, textContainers, aReflowInput, reflowInputs
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};
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nscoord spanISize = ReflowSpans(reflowInput);
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isize = std::max(isize, spanISize);
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}
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for (uint32_t i = 0; i < rtcCount; 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 = textContainers[i];
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nsLineLayout* lineLayout = lineLayouts[i].get();
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RubyUtils::ClearReservedISize(textContainer);
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nscoord rtcISize = lineLayout->GetCurrentICoord();
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// Only span containers and containers with collapsed annotations
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// need reserving isize. For normal ruby text containers, their
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// children will be expanded properly. We only need to expand their
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// own size.
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if (!textContainer->IsSpanContainer()) {
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rtcISize = isize;
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} else if (isize > rtcISize) {
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RubyUtils::SetReservedISize(textContainer, isize - rtcISize);
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}
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lineLayout->VerticalAlignLine();
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textContainer->SetISize(rtcISize);
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lineLayout->EndLineReflow();
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}
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// Border and padding are suppressed on ruby base container,
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// create a fake borderPadding for setting BSize.
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WritingMode frameWM = aReflowInput.GetWritingMode();
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LogicalMargin borderPadding(frameWM);
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nsLayoutUtils::SetBSizeFromFontMetrics(this, aDesiredSize,
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borderPadding, lineWM, frameWM);
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}
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/**
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* This struct stores the continuations after this frame and
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* corresponding text containers. It is used to speed up looking
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* ahead for nonempty continuations.
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*/
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struct MOZ_STACK_CLASS nsRubyBaseContainerFrame::PullFrameState
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{
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ContinuationTraversingState mBase;
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AutoTArray<ContinuationTraversingState, RTC_ARRAY_SIZE> mTexts;
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const AutoRubyTextContainerArray& mTextContainers;
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PullFrameState(nsRubyBaseContainerFrame* aBaseContainer,
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const AutoRubyTextContainerArray& aTextContainers);
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};
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nscoord
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nsRubyBaseContainerFrame::ReflowColumns(const RubyReflowInput& aReflowInput,
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nsReflowStatus& aStatus)
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{
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nsLineLayout* lineLayout = aReflowInput.mBaseReflowInput.mLineLayout;
|
|
const uint32_t rtcCount = aReflowInput.mTextContainers.Length();
|
|
nscoord icoord = lineLayout->GetCurrentICoord();
|
|
MOZ_ASSERT(icoord == 0, "border/padding of rbc should have been suppressed");
|
|
nsReflowStatus reflowStatus = NS_FRAME_COMPLETE;
|
|
aStatus = NS_FRAME_COMPLETE;
|
|
|
|
uint32_t columnIndex = 0;
|
|
RubyColumn column;
|
|
column.mTextFrames.SetCapacity(rtcCount);
|
|
RubyColumnEnumerator e(this, aReflowInput.mTextContainers);
|
|
for (; !e.AtEnd(); e.Next()) {
|
|
e.GetColumn(column);
|
|
icoord += ReflowOneColumn(aReflowInput, columnIndex, column, reflowStatus);
|
|
if (!NS_INLINE_IS_BREAK_BEFORE(reflowStatus)) {
|
|
columnIndex++;
|
|
}
|
|
if (NS_INLINE_IS_BREAK(reflowStatus)) {
|
|
break;
|
|
}
|
|
// We are not handling overflow here.
|
|
MOZ_ASSERT(reflowStatus == NS_FRAME_COMPLETE);
|
|
}
|
|
|
|
bool isComplete = false;
|
|
PullFrameState pullFrameState(this, aReflowInput.mTextContainers);
|
|
while (!NS_INLINE_IS_BREAK(reflowStatus)) {
|
|
// We are not handling overflow here.
|
|
MOZ_ASSERT(reflowStatus == NS_FRAME_COMPLETE);
|
|
|
|
// Try pull some frames from next continuations. This call replaces
|
|
// frames in |column| with the frame pulled in each level.
|
|
PullOneColumn(lineLayout, pullFrameState, column, isComplete);
|
|
if (isComplete) {
|
|
// No more frames can be pulled.
|
|
break;
|
|
}
|
|
icoord += ReflowOneColumn(aReflowInput, columnIndex, column, reflowStatus);
|
|
if (!NS_INLINE_IS_BREAK_BEFORE(reflowStatus)) {
|
|
columnIndex++;
|
|
}
|
|
}
|
|
|
|
if (!e.AtEnd() && NS_INLINE_IS_BREAK_AFTER(reflowStatus)) {
|
|
// The current column has been successfully placed.
|
|
// Skip to the next column and mark break before.
|
|
e.Next();
|
|
e.GetColumn(column);
|
|
reflowStatus = NS_INLINE_LINE_BREAK_BEFORE();
|
|
}
|
|
if (!e.AtEnd() || (GetNextInFlow() && !isComplete)) {
|
|
NS_FRAME_SET_INCOMPLETE(aStatus);
|
|
}
|
|
|
|
if (NS_INLINE_IS_BREAK_BEFORE(reflowStatus)) {
|
|
if (!columnIndex || !aReflowInput.mAllowLineBreak) {
|
|
// If no column has been placed yet, or we have any span,
|
|
// the whole container should be in the next line.
|
|
aStatus = NS_INLINE_LINE_BREAK_BEFORE();
|
|
return 0;
|
|
}
|
|
aStatus = NS_INLINE_LINE_BREAK_AFTER(aStatus);
|
|
MOZ_ASSERT(NS_FRAME_IS_COMPLETE(aStatus) || aReflowInput.mAllowLineBreak);
|
|
|
|
// If we are on an intra-level whitespace column, null values in
|
|
// column.mBaseFrame and column.mTextFrames don't represent the
|
|
// end of the frame-sibling-chain at that level -- instead, they
|
|
// represent an anonymous empty intra-level whitespace box. It is
|
|
// likely that there are frames in the next column (which can't be
|
|
// intra-level whitespace). Those frames should be pushed as well.
|
|
Maybe<RubyColumn> nextColumn;
|
|
if (column.mIsIntraLevelWhitespace && !e.AtEnd()) {
|
|
e.Next();
|
|
nextColumn.emplace();
|
|
e.GetColumn(nextColumn.ref());
|
|
}
|
|
nsIFrame* baseFrame = column.mBaseFrame;
|
|
if (!baseFrame & nextColumn.isSome()) {
|
|
baseFrame = nextColumn->mBaseFrame;
|
|
}
|
|
if (baseFrame) {
|
|
PushChildren(baseFrame, baseFrame->GetPrevSibling());
|
|
}
|
|
for (uint32_t i = 0; i < rtcCount; i++) {
|
|
nsRubyTextFrame* textFrame = column.mTextFrames[i];
|
|
if (!textFrame && nextColumn.isSome()) {
|
|
textFrame = nextColumn->mTextFrames[i];
|
|
}
|
|
if (textFrame) {
|
|
aReflowInput.mTextContainers[i]->PushChildren(
|
|
textFrame, textFrame->GetPrevSibling());
|
|
}
|
|
}
|
|
} else if (NS_INLINE_IS_BREAK_AFTER(reflowStatus)) {
|
|
// |reflowStatus| being break after here may only happen when
|
|
// there is a break after the column just pulled, or the whole
|
|
// segment has been completely reflowed. In those cases, we do
|
|
// not need to push anything.
|
|
MOZ_ASSERT(e.AtEnd());
|
|
aStatus = NS_INLINE_LINE_BREAK_AFTER(aStatus);
|
|
}
|
|
|
|
return icoord;
|
|
}
|
|
|
|
nscoord
|
|
nsRubyBaseContainerFrame::ReflowOneColumn(const RubyReflowInput& aReflowInput,
|
|
uint32_t aColumnIndex,
|
|
const RubyColumn& aColumn,
|
|
nsReflowStatus& aStatus)
|
|
{
|
|
const ReflowInput& baseReflowInput = aReflowInput.mBaseReflowInput;
|
|
const auto& textReflowInputs = aReflowInput.mTextReflowInputs;
|
|
nscoord istart = baseReflowInput.mLineLayout->GetCurrentICoord();
|
|
|
|
if (aColumn.mBaseFrame) {
|
|
bool allowBreakBefore = aColumnIndex ?
|
|
aReflowInput.mAllowLineBreak : aReflowInput.mAllowInitialLineBreak;
|
|
if (allowBreakBefore) {
|
|
gfxBreakPriority breakPriority = LineBreakBefore(
|
|
aColumn.mBaseFrame, baseReflowInput.mRenderingContext->GetDrawTarget(),
|
|
baseReflowInput.mLineLayout->LineContainerFrame(),
|
|
baseReflowInput.mLineLayout->GetLine());
|
|
if (breakPriority != gfxBreakPriority::eNoBreak) {
|
|
gfxBreakPriority lastBreakPriority =
|
|
baseReflowInput.mLineLayout->LastOptionalBreakPriority();
|
|
if (breakPriority >= lastBreakPriority) {
|
|
// Either we have been overflow, or we are forced
|
|
// to break here, do break before.
|
|
if (istart > baseReflowInput.AvailableISize() ||
|
|
baseReflowInput.mLineLayout->NotifyOptionalBreakPosition(
|
|
aColumn.mBaseFrame, 0, true, breakPriority)) {
|
|
aStatus = NS_INLINE_LINE_BREAK_BEFORE();
|
|
return 0;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
const uint32_t rtcCount = aReflowInput.mTextContainers.Length();
|
|
MOZ_ASSERT(aColumn.mTextFrames.Length() == rtcCount);
|
|
MOZ_ASSERT(textReflowInputs.Length() == rtcCount);
|
|
nscoord columnISize = 0;
|
|
|
|
nsAutoString baseText;
|
|
if (aColumn.mBaseFrame) {
|
|
nsLayoutUtils::GetFrameTextContent(aColumn.mBaseFrame, baseText);
|
|
}
|
|
|
|
// Reflow text frames
|
|
for (uint32_t i = 0; i < rtcCount; i++) {
|
|
nsRubyTextFrame* textFrame = aColumn.mTextFrames[i];
|
|
if (textFrame) {
|
|
nsAutoString annotationText;
|
|
nsLayoutUtils::GetFrameTextContent(textFrame, annotationText);
|
|
|
|
// Per CSS Ruby spec, the content comparison for auto-hiding
|
|
// takes place prior to white spaces collapsing (white-space)
|
|
// and text transformation (text-transform), and ignores elements
|
|
// (considers only the textContent of the boxes). Which means
|
|
// using the content tree text comparison is correct.
|
|
if (annotationText.Equals(baseText)) {
|
|
textFrame->AddStateBits(NS_RUBY_TEXT_FRAME_AUTOHIDE);
|
|
} else {
|
|
textFrame->RemoveStateBits(NS_RUBY_TEXT_FRAME_AUTOHIDE);
|
|
}
|
|
RubyUtils::ClearReservedISize(textFrame);
|
|
|
|
bool pushedFrame;
|
|
nsReflowStatus reflowStatus;
|
|
nsLineLayout* lineLayout = textReflowInputs[i]->mLineLayout;
|
|
nscoord textIStart = lineLayout->GetCurrentICoord();
|
|
lineLayout->ReflowFrame(textFrame, reflowStatus, nullptr, pushedFrame);
|
|
if (MOZ_UNLIKELY(NS_INLINE_IS_BREAK(reflowStatus) || pushedFrame)) {
|
|
MOZ_ASSERT_UNREACHABLE(
|
|
"Any line break inside ruby box should have been suppressed");
|
|
// For safety, always drain the overflow list, so that
|
|
// no frames are left there after reflow.
|
|
textFrame->DrainSelfOverflowList();
|
|
}
|
|
nscoord textISize = lineLayout->GetCurrentICoord() - textIStart;
|
|
columnISize = std::max(columnISize, textISize);
|
|
}
|
|
}
|
|
|
|
// Reflow the base frame
|
|
if (aColumn.mBaseFrame) {
|
|
RubyUtils::ClearReservedISize(aColumn.mBaseFrame);
|
|
|
|
bool pushedFrame;
|
|
nsReflowStatus reflowStatus;
|
|
nsLineLayout* lineLayout = baseReflowInput.mLineLayout;
|
|
nscoord baseIStart = lineLayout->GetCurrentICoord();
|
|
lineLayout->ReflowFrame(aColumn.mBaseFrame, reflowStatus,
|
|
nullptr, pushedFrame);
|
|
if (MOZ_UNLIKELY(NS_INLINE_IS_BREAK(reflowStatus) || pushedFrame)) {
|
|
MOZ_ASSERT_UNREACHABLE(
|
|
"Any line break inside ruby box should have been suppressed");
|
|
// For safety, always drain the overflow list, so that
|
|
// no frames are left there after reflow.
|
|
aColumn.mBaseFrame->DrainSelfOverflowList();
|
|
}
|
|
nscoord baseISize = lineLayout->GetCurrentICoord() - baseIStart;
|
|
columnISize = std::max(columnISize, baseISize);
|
|
}
|
|
|
|
// Align all the line layout to the new coordinate.
|
|
nscoord icoord = istart + columnISize;
|
|
nscoord deltaISize = icoord - baseReflowInput.mLineLayout->GetCurrentICoord();
|
|
if (deltaISize > 0) {
|
|
baseReflowInput.mLineLayout->AdvanceICoord(deltaISize);
|
|
if (aColumn.mBaseFrame) {
|
|
RubyUtils::SetReservedISize(aColumn.mBaseFrame, deltaISize);
|
|
}
|
|
}
|
|
for (uint32_t i = 0; i < rtcCount; i++) {
|
|
if (aReflowInput.mTextContainers[i]->IsSpanContainer()) {
|
|
continue;
|
|
}
|
|
nsLineLayout* lineLayout = textReflowInputs[i]->mLineLayout;
|
|
nsRubyTextFrame* textFrame = aColumn.mTextFrames[i];
|
|
nscoord deltaISize = icoord - lineLayout->GetCurrentICoord();
|
|
if (deltaISize > 0) {
|
|
lineLayout->AdvanceICoord(deltaISize);
|
|
if (textFrame && !textFrame->IsAutoHidden()) {
|
|
RubyUtils::SetReservedISize(textFrame, deltaISize);
|
|
}
|
|
}
|
|
if (aColumn.mBaseFrame && textFrame) {
|
|
lineLayout->AttachLastFrameToBaseLineLayout();
|
|
}
|
|
}
|
|
|
|
return columnISize;
|
|
}
|
|
|
|
nsRubyBaseContainerFrame::PullFrameState::PullFrameState(
|
|
nsRubyBaseContainerFrame* aBaseContainer,
|
|
const AutoRubyTextContainerArray& aTextContainers)
|
|
: mBase(aBaseContainer)
|
|
, mTextContainers(aTextContainers)
|
|
{
|
|
const uint32_t rtcCount = aTextContainers.Length();
|
|
for (uint32_t i = 0; i < rtcCount; i++) {
|
|
mTexts.AppendElement(aTextContainers[i]);
|
|
}
|
|
}
|
|
|
|
void
|
|
nsRubyBaseContainerFrame::PullOneColumn(nsLineLayout* aLineLayout,
|
|
PullFrameState& aPullFrameState,
|
|
RubyColumn& aColumn,
|
|
bool& aIsComplete)
|
|
{
|
|
const AutoRubyTextContainerArray& textContainers =
|
|
aPullFrameState.mTextContainers;
|
|
const uint32_t rtcCount = textContainers.Length();
|
|
|
|
nsIFrame* nextBase = GetNextInFlowChild(aPullFrameState.mBase);
|
|
MOZ_ASSERT(!nextBase || nextBase->GetType() == nsGkAtoms::rubyBaseFrame);
|
|
aColumn.mBaseFrame = static_cast<nsRubyBaseFrame*>(nextBase);
|
|
bool foundFrame = !!aColumn.mBaseFrame;
|
|
bool pullingIntraLevelWhitespace =
|
|
aColumn.mBaseFrame && aColumn.mBaseFrame->IsIntraLevelWhitespace();
|
|
|
|
aColumn.mTextFrames.ClearAndRetainStorage();
|
|
for (uint32_t i = 0; i < rtcCount; i++) {
|
|
nsIFrame* nextText =
|
|
textContainers[i]->GetNextInFlowChild(aPullFrameState.mTexts[i]);
|
|
MOZ_ASSERT(!nextText || nextText->GetType() == nsGkAtoms::rubyTextFrame);
|
|
nsRubyTextFrame* textFrame = static_cast<nsRubyTextFrame*>(nextText);
|
|
aColumn.mTextFrames.AppendElement(textFrame);
|
|
foundFrame = foundFrame || nextText;
|
|
if (nextText && !pullingIntraLevelWhitespace) {
|
|
pullingIntraLevelWhitespace = textFrame->IsIntraLevelWhitespace();
|
|
}
|
|
}
|
|
// If there exists any frame in continations, we haven't
|
|
// completed the reflow process.
|
|
aIsComplete = !foundFrame;
|
|
if (!foundFrame) {
|
|
return;
|
|
}
|
|
|
|
aColumn.mIsIntraLevelWhitespace = pullingIntraLevelWhitespace;
|
|
if (pullingIntraLevelWhitespace) {
|
|
// We are pulling an intra-level whitespace. Drop all frames which
|
|
// are not part of this intra-level whitespace column. (Those frames
|
|
// are really part of the *next* column, after the pulled one.)
|
|
if (aColumn.mBaseFrame && !aColumn.mBaseFrame->IsIntraLevelWhitespace()) {
|
|
aColumn.mBaseFrame = nullptr;
|
|
}
|
|
for (uint32_t i = 0; i < rtcCount; i++) {
|
|
nsRubyTextFrame*& textFrame = aColumn.mTextFrames[i];
|
|
if (textFrame && !textFrame->IsIntraLevelWhitespace()) {
|
|
textFrame = nullptr;
|
|
}
|
|
}
|
|
} else {
|
|
// We are not pulling an intra-level whitespace, which means all
|
|
// elements we are going to pull can have non-whitespace content,
|
|
// which may contain float which we need to reparent.
|
|
nsBlockFrame* oldFloatCB = nullptr;
|
|
for (nsIFrame* frame : aColumn) {
|
|
oldFloatCB = nsLayoutUtils::GetFloatContainingBlock(frame);
|
|
break;
|
|
}
|
|
#ifdef DEBUG
|
|
MOZ_ASSERT(oldFloatCB, "Must have found a float containing block");
|
|
for (nsIFrame* frame : aColumn) {
|
|
MOZ_ASSERT(nsLayoutUtils::GetFloatContainingBlock(frame) == oldFloatCB,
|
|
"All frames in the same ruby column should share "
|
|
"the same old float containing block");
|
|
}
|
|
#endif
|
|
nsBlockFrame* newFloatCB =
|
|
nsLayoutUtils::GetAsBlock(aLineLayout->LineContainerFrame());
|
|
MOZ_ASSERT(newFloatCB, "Must have a float containing block");
|
|
if (oldFloatCB != newFloatCB) {
|
|
for (nsIFrame* frame : aColumn) {
|
|
newFloatCB->ReparentFloats(frame, oldFloatCB, false);
|
|
}
|
|
}
|
|
}
|
|
|
|
// Pull the frames of this column.
|
|
if (aColumn.mBaseFrame) {
|
|
DebugOnly<nsIFrame*> pulled = PullNextInFlowChild(aPullFrameState.mBase);
|
|
MOZ_ASSERT(pulled == aColumn.mBaseFrame, "pulled a wrong frame?");
|
|
}
|
|
for (uint32_t i = 0; i < rtcCount; i++) {
|
|
if (aColumn.mTextFrames[i]) {
|
|
DebugOnly<nsIFrame*> pulled =
|
|
textContainers[i]->PullNextInFlowChild(aPullFrameState.mTexts[i]);
|
|
MOZ_ASSERT(pulled == aColumn.mTextFrames[i], "pulled a wrong frame?");
|
|
}
|
|
}
|
|
|
|
if (!aIsComplete) {
|
|
// We pulled frames from the next line, hence mark it dirty.
|
|
aLineLayout->SetDirtyNextLine();
|
|
}
|
|
}
|
|
|
|
nscoord
|
|
nsRubyBaseContainerFrame::ReflowSpans(const RubyReflowInput& aReflowInput)
|
|
{
|
|
nscoord spanISize = 0;
|
|
for (uint32_t i = 0, iend = aReflowInput.mTextContainers.Length();
|
|
i < iend; i++) {
|
|
nsRubyTextContainerFrame* container = aReflowInput.mTextContainers[i];
|
|
if (!container->IsSpanContainer()) {
|
|
continue;
|
|
}
|
|
|
|
nsIFrame* rtFrame = container->PrincipalChildList().FirstChild();
|
|
nsReflowStatus reflowStatus;
|
|
bool pushedFrame;
|
|
nsLineLayout* lineLayout = aReflowInput.mTextReflowInputs[i]->mLineLayout;
|
|
MOZ_ASSERT(lineLayout->GetCurrentICoord() == 0,
|
|
"border/padding of rtc should have been suppressed");
|
|
lineLayout->ReflowFrame(rtFrame, reflowStatus, nullptr, pushedFrame);
|
|
MOZ_ASSERT(!NS_INLINE_IS_BREAK(reflowStatus) && !pushedFrame,
|
|
"Any line break inside ruby box should has been suppressed");
|
|
spanISize = std::max(spanISize, lineLayout->GetCurrentICoord());
|
|
}
|
|
return spanISize;
|
|
}
|