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b9f182a6bd
Text can only only inside paragraphs and inlines. This patch makes it so we stop putting such text nodes in the render tree at all if their parent is not a paragraph or an inline. This is the final step in making it so that we don't create anonymous renderers, which fixes a crash in the new custom layout code. R=eseidel@chromium.org Review URL: https://codereview.chromium.org/1077473002
117 lines
5.5 KiB
C++
117 lines
5.5 KiB
C++
// Copyright 2014 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef SKY_ENGINE_CORE_RENDERING_RENDERPARAGRAPH_H_
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#define SKY_ENGINE_CORE_RENDERING_RENDERPARAGRAPH_H_
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#include "sky/engine/core/dom/ContainerNode.h"
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#include "sky/engine/core/rendering/RenderBlock.h"
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#include "sky/engine/core/rendering/line/TrailingObjects.h"
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namespace blink {
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struct BidiRun;
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class ContainerNode;
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// class InlineBidiResolver;
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class InlineIterator;
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class RenderParagraph final : public RenderBlock {
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public:
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explicit RenderParagraph(ContainerNode*);
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virtual ~RenderParagraph();
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bool isRenderParagraph() const final { return true; }
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void layout() final;
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LayoutUnit logicalRightOffsetForLine(bool shouldIndentText) const
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{
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LayoutUnit right = logicalRightOffsetForContent();
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if (shouldIndentText && !style()->isLeftToRightDirection())
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right -= textIndentOffset();
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return right;
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}
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LayoutUnit logicalLeftOffsetForLine(bool shouldIndentText) const
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{
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LayoutUnit left = logicalLeftOffsetForContent();
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if (shouldIndentText && style()->isLeftToRightDirection())
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left += textIndentOffset();
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return left;
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}
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LayoutUnit logicalLeftSelectionOffset(RenderBlock* rootBlock, LayoutUnit position) final;
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LayoutUnit logicalRightSelectionOffset(RenderBlock* rootBlock, LayoutUnit position) final;
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virtual RootInlineBox* lineAtIndex(int) const;
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virtual int lineCount(const RootInlineBox* = 0, bool* = 0) const;
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void deleteLineBoxTree() final;
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GapRects inlineSelectionGaps(RenderBlock* rootBlock, const LayoutPoint& rootBlockPhysicalPosition, const LayoutSize& offsetFromRootBlock,
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LayoutUnit& lastLogicalTop, LayoutUnit& lastLogicalLeft, LayoutUnit& lastLogicalRight, const PaintInfo*);
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static bool shouldSkipCreatingRunsForObject(RenderObject* obj)
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{
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return obj->isOutOfFlowPositioned() && !obj->style()->isOriginalDisplayInlineType() && !obj->container()->isRenderInline();
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}
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// TODO(ojan): Remove the need for these.
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using RenderBlock::lineBoxes;
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using RenderBlock::firstLineBox;
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using RenderBlock::lastRootBox;
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protected:
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void addOverflowFromChildren() final;
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void simplifiedNormalFlowLayout() final;
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void paintChildren(PaintInfo&, const LayoutPoint&, Vector<RenderBox*>& layers) final;
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bool hitTestContents(const HitTestRequest&, HitTestResult&, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset) final;
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virtual ETextAlign textAlignmentForLine(bool endsWithSoftBreak) const;
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void computeIntrinsicLogicalWidths(LayoutUnit& minLogicalWidth, LayoutUnit& maxLogicalWidth) const final;
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int firstLineBoxBaseline() const final;
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int lastLineBoxBaseline(LineDirectionMode) const final;
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private:
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virtual const char* renderName() const override;
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void layoutChildren(bool relayoutChildren, SubtreeLayoutScope&, LayoutUnit beforeEdge, LayoutUnit afterEdge);
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void markLinesDirtyInBlockRange(LayoutUnit logicalTop, LayoutUnit logicalBottom, RootInlineBox* highest = 0);
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void updateLogicalWidthForAlignment(const ETextAlign&, const RootInlineBox*, BidiRun* trailingSpaceRun, float& logicalLeft, float& totalLogicalWidth, float& availableLogicalWidth, unsigned expansionOpportunityCount);
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RootInlineBox* createAndAppendRootInlineBox();
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RootInlineBox* createRootInlineBox();
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InlineFlowBox* createLineBoxes(RenderObject*, const LineInfo&, InlineBox* childBox);
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InlineBox* createInlineBoxForRenderer(RenderObject*, bool isRootLineBox, bool isOnlyRun = false);
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RootInlineBox* constructLine(BidiRunList<BidiRun>&, const LineInfo&);
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void computeInlineDirectionPositionsForLine(RootInlineBox*, const LineInfo&, BidiRun* firstRun, BidiRun* trailingSpaceRun, bool reachedEnd, GlyphOverflowAndFallbackFontsMap&, VerticalPositionCache&, WordMeasurements&);
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BidiRun* computeInlineDirectionPositionsForSegment(RootInlineBox*, const LineInfo&, ETextAlign, float& logicalLeft,
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float& availableLogicalWidth, BidiRun* firstRun, BidiRun* trailingSpaceRun, GlyphOverflowAndFallbackFontsMap& textBoxDataMap, VerticalPositionCache&, WordMeasurements&);
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void computeBlockDirectionPositionsForLine(RootInlineBox*, BidiRun*, GlyphOverflowAndFallbackFontsMap&, VerticalPositionCache&);
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// Helper function for layoutChildren()
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RootInlineBox* createLineBoxesFromBidiRuns(unsigned bidiLevel, BidiRunList<BidiRun>&, const InlineIterator& end, LineInfo&, VerticalPositionCache&, BidiRun* trailingSpaceRun, WordMeasurements&);
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void layoutRunsAndFloats(LineLayoutState&);
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void layoutRunsAndFloatsInRange(LineLayoutState&, InlineBidiResolver&,
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const InlineIterator& cleanLineStart, const BidiStatus& cleanLineBidiStatus);
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void linkToEndLineIfNeeded(LineLayoutState&);
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RootInlineBox* determineStartPosition(LineLayoutState&, InlineBidiResolver&);
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void determineEndPosition(LineLayoutState&, RootInlineBox* startBox, InlineIterator& cleanLineStart, BidiStatus& cleanLineBidiStatus);
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bool checkPaginationAndFloatsAtEndLine(LineLayoutState&);
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bool matchedEndLine(LineLayoutState&, const InlineBidiResolver&, const InlineIterator& endLineStart, const BidiStatus& endLineStatus);
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void deleteEllipsisLineBoxes();
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void checkLinesForTextOverflow();
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};
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DEFINE_RENDER_OBJECT_TYPE_CASTS(RenderParagraph, isRenderParagraph());
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} // namespace blink
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#endif // SKY_ENGINE_CORE_RENDERING_RENDERPARAGRAPH_H_
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