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21d7575716
We'll use this function to position the caret when the user taps a text input control. Very little of the code in this patch is actually new. Most of it is restoring code that we previously removed from the engine. I've made some small changes to the restored code to handle the lack of a DOM. The only major change is to RenderObject::createPositionWithAffinity, which now just returns the values it captures instead of trying to compute a DOM position. TextAffinity and TextPosition are lifted from package:flutter. Once this patch rolls into package:flutter, I'll remove the declarations there.
145 lines
6.9 KiB
C++
145 lines
6.9 KiB
C++
/*
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* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
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* (C) 1999 Antti Koivisto (koivisto@kde.org)
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* Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public License
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* along with this library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*
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*/
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#ifndef SKY_ENGINE_CORE_RENDERING_RENDERINLINE_H_
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#define SKY_ENGINE_CORE_RENDERING_RENDERINLINE_H_
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#include "sky/engine/core/rendering/InlineFlowBox.h"
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#include "sky/engine/core/rendering/RenderBoxModelObject.h"
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#include "sky/engine/core/rendering/RenderLineBoxList.h"
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namespace blink {
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class RenderInline : public RenderBoxModelObject {
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public:
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explicit RenderInline();
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RenderObject* firstChild() const { ASSERT(children() == virtualChildren()); return children()->firstChild(); }
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RenderObject* lastChild() const { ASSERT(children() == virtualChildren()); return children()->lastChild(); }
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// If you have a RenderInline, use firstChild or lastChild instead.
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void slowFirstChild() const = delete;
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void slowLastChild() const = delete;
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virtual void addChild(RenderObject* newChild, RenderObject* beforeChild = 0) override;
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virtual LayoutUnit marginLeft() const override final;
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virtual LayoutUnit marginRight() const override final;
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virtual LayoutUnit marginTop() const override final;
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virtual LayoutUnit marginBottom() const override final;
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virtual LayoutUnit marginBefore(const RenderStyle* otherStyle = 0) const override final;
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virtual LayoutUnit marginAfter(const RenderStyle* otherStyle = 0) const override final;
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virtual LayoutUnit marginStart(const RenderStyle* otherStyle = 0) const override final;
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virtual LayoutUnit marginEnd(const RenderStyle* otherStyle = 0) const override final;
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virtual void absoluteQuads(Vector<FloatQuad>&) const override;
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IntRect linesBoundingBox() const;
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LayoutRect linesVisualOverflowBoundingBox() const;
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InlineFlowBox* createAndAppendInlineFlowBox();
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void dirtyLineBoxes(bool fullLayout);
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void deleteLineBoxTree();
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RenderLineBoxList* lineBoxes() { return &m_lineBoxes; }
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const RenderLineBoxList* lineBoxes() const { return &m_lineBoxes; }
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InlineFlowBox* firstLineBox() const { return m_lineBoxes.firstLineBox(); }
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InlineFlowBox* lastLineBox() const { return m_lineBoxes.lastLineBox(); }
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InlineBox* firstLineBoxIncludingCulling() const { return alwaysCreateLineBoxes() ? firstLineBox() : culledInlineFirstLineBox(); }
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InlineBox* lastLineBoxIncludingCulling() const { return alwaysCreateLineBoxes() ? lastLineBox() : culledInlineLastLineBox(); }
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virtual void addFocusRingRects(Vector<IntRect>&, const LayoutPoint& additionalOffset, const RenderBox* paintContainer = 0) const override final;
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bool alwaysCreateLineBoxes() const { return alwaysCreateLineBoxesForRenderInline(); }
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void setAlwaysCreateLineBoxes(bool alwaysCreateLineBoxes = true) { setAlwaysCreateLineBoxesForRenderInline(alwaysCreateLineBoxes); }
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void updateAlwaysCreateLineBoxes(bool fullLayout);
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virtual LayoutRect localCaretRect(InlineBox*, int, LayoutUnit* extraWidthToEndOfLine) override final;
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bool hitTestCulledInline(const HitTestRequest&, HitTestResult&, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset);
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protected:
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virtual void willBeDestroyed() override;
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virtual void styleDidChange(StyleDifference, const RenderStyle* oldStyle) override;
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private:
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virtual RenderObjectChildList* virtualChildren() override final { return children(); }
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virtual const RenderObjectChildList* virtualChildren() const override final { return children(); }
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const RenderObjectChildList* children() const { return &m_children; }
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RenderObjectChildList* children() { return &m_children; }
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virtual const char* renderName() const override;
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virtual bool isRenderInline() const override final { return true; }
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LayoutRect culledInlineVisualOverflowBoundingBox() const;
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InlineBox* culledInlineFirstLineBox() const;
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InlineBox* culledInlineLastLineBox() const;
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template<typename GeneratorContext>
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void generateLineBoxRects(GeneratorContext& yield) const;
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template<typename GeneratorContext>
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void generateCulledLineBoxRects(GeneratorContext& yield, const RenderInline* container) const;
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virtual void layout() override final { ASSERT_NOT_REACHED(); } // Do nothing for layout()
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virtual void paint(PaintInfo&, const LayoutPoint&, Vector<RenderBox*>& layers) override final;
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virtual bool nodeAtPoint(const HitTestRequest&, HitTestResult&, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset) override final;
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virtual LayoutUnit offsetLeft() const override final;
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virtual LayoutUnit offsetTop() const override final;
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virtual LayoutUnit offsetWidth() const override final { return linesBoundingBox().width(); }
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virtual LayoutUnit offsetHeight() const override final { return linesBoundingBox().height(); }
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virtual void mapLocalToContainer(const RenderBox* paintInvalidationContainer, TransformState&, MapCoordinatesFlags = ApplyContainerFlip) const override;
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virtual PositionWithAffinity positionForPoint(const LayoutPoint&) override final;
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virtual IntRect borderBoundingBox() const override final
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{
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IntRect boundingBox = linesBoundingBox();
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return IntRect(0, 0, boundingBox.width(), boundingBox.height());
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}
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virtual InlineFlowBox* createInlineFlowBox(); // Subclassed by SVG and Ruby
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virtual void dirtyLinesFromChangedChild(RenderObject* child) override final { m_lineBoxes.dirtyLinesFromChangedChild(this, child); }
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virtual LayoutUnit lineHeight(bool firstLine, LineDirectionMode, LinePositionMode = PositionOnContainingLine) const override final;
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virtual int baselinePosition(FontBaseline, bool firstLine, LineDirectionMode, LinePositionMode = PositionOnContainingLine) const override final;
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virtual void updateHitTestResult(HitTestResult&, const LayoutPoint&) override final;
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RenderObjectChildList m_children;
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RenderLineBoxList m_lineBoxes; // All of the line boxes created for this inline flow. For example, <i>Hello<br>world.</i> will have two <i> line boxes.
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};
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DEFINE_RENDER_OBJECT_TYPE_CASTS(RenderInline, isRenderInline());
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} // namespace blink
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#endif // SKY_ENGINE_CORE_RENDERING_RENDERINLINE_H_
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