1/* 2 * Copyright (C) 2007 Rob Buis <buis@kde.org> 3 * Copyright (C) 2007 Nikolas Zimmermann <zimmermann@kde.org> 4 * Copyright (C) Research In Motion Limited 2010. All rights reserved. 5 * 6 * This library is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU Library General Public 8 * License as published by the Free Software Foundation; either 9 * version 2 of the License, or (at your option) any later version. 10 * 11 * This library is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 * Library General Public License for more details. 15 * 16 * You should have received a copy of the GNU Library General Public License 17 * along with this library; see the file COPYING.LIB. If not, write to 18 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 19 * Boston, MA 02110-1301, USA. 20 */ 21 22#ifndef SVGInlineTextBox_h 23#define SVGInlineTextBox_h 24 25#include "InlineTextBox.h" 26#include "SVGTextLayoutEngine.h" 27#include "RenderSVGInlineText.h" 28 29namespace WebCore { 30 31class RenderSVGResource; 32class SVGRootInlineBox; 33 34class SVGInlineTextBox final : public InlineTextBox { 35public: 36 explicit SVGInlineTextBox(RenderSVGInlineText&); 37 38 RenderSVGInlineText& renderer() const { return toRenderSVGInlineText(InlineTextBox::renderer()); } 39 40 virtual float virtualLogicalHeight() const { return m_logicalHeight; } 41 void setLogicalHeight(float height) { m_logicalHeight = height; } 42 43 virtual int selectionTop() { return top(); } 44 virtual int selectionHeight() { return static_cast<int>(ceilf(m_logicalHeight)); } 45 virtual int offsetForPosition(float x, bool includePartialGlyphs = true) const; 46 virtual float positionForOffset(int offset) const; 47 48 void paintSelectionBackground(PaintInfo&); 49 virtual void paint(PaintInfo&, const LayoutPoint&, LayoutUnit lineTop, LayoutUnit lineBottom); 50 virtual LayoutRect localSelectionRect(int startPosition, int endPosition) const override; 51 52 bool mapStartEndPositionsIntoFragmentCoordinates(const SVGTextFragment&, int& startPosition, int& endPosition) const; 53 54 virtual FloatRect calculateBoundaries() const; 55 56 void clearTextFragments() { m_textFragments.clear(); } 57 Vector<SVGTextFragment>& textFragments() { return m_textFragments; } 58 const Vector<SVGTextFragment>& textFragments() const { return m_textFragments; } 59 60 virtual void dirtyOwnLineBoxes() override final; 61 virtual void dirtyLineBoxes() override final; 62 63 bool startsNewTextChunk() const { return m_startsNewTextChunk; } 64 void setStartsNewTextChunk(bool newTextChunk) { m_startsNewTextChunk = newTextChunk; } 65 66 int offsetForPositionInFragment(const SVGTextFragment&, float position, bool includePartialGlyphs) const; 67 FloatRect selectionRectForTextFragment(const SVGTextFragment&, int fragmentStartPosition, int fragmentEndPosition, RenderStyle*) const; 68 69private: 70 virtual bool isSVGInlineTextBox() const override { return true; } 71 72 TextRun constructTextRun(RenderStyle*, const SVGTextFragment&) const; 73 74 bool acquirePaintingResource(GraphicsContext*&, float scalingFactor, RenderBoxModelObject&, RenderStyle*); 75 void releasePaintingResource(GraphicsContext*&, const Path*); 76 77 bool prepareGraphicsContextForTextPainting(GraphicsContext*&, float scalingFactor, TextRun&, RenderStyle*); 78 void restoreGraphicsContextAfterTextPainting(GraphicsContext*&, TextRun&); 79 80 void paintDecoration(GraphicsContext*, TextDecoration, const SVGTextFragment&); 81 void paintDecorationWithStyle(GraphicsContext*, TextDecoration, const SVGTextFragment&, RenderBoxModelObject& decorationRenderer); 82 void paintTextWithShadows(GraphicsContext*, RenderStyle*, TextRun&, const SVGTextFragment&, int startPosition, int endPosition); 83 void paintText(GraphicsContext*, RenderStyle*, RenderStyle* selectionStyle, const SVGTextFragment&, bool hasSelection, bool paintSelectedTextOnly); 84 85 virtual bool nodeAtPoint(const HitTestRequest&, HitTestResult&, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, LayoutUnit lineTop, LayoutUnit lineBottom) override; 86 87private: 88 float m_logicalHeight; 89 unsigned m_paintingResourceMode : 4; 90 unsigned m_startsNewTextChunk : 1; 91 RenderSVGResource* m_paintingResource; 92 Vector<SVGTextFragment> m_textFragments; 93}; 94 95INLINE_BOX_OBJECT_TYPE_CASTS(SVGInlineTextBox, isSVGInlineTextBox()) 96 97} // namespace WebCore 98 99#endif // SVGInlineTextBox_h 100