1 /* 2 * Copyright (C) 2007 Rob Buis <buis (at) kde.org> 3 * Copyright (C) 2007 Nikolas Zimmermann <zimmermann (at) 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 "core/rendering/InlineTextBox.h" 26 #include "core/rendering/svg/SVGTextLayoutEngine.h" 27 28 namespace WebCore { 29 30 class RenderSVGResource; 31 class SVGRootInlineBox; 32 33 class SVGInlineTextBox FINAL : public InlineTextBox { 34 public: 35 SVGInlineTextBox(RenderObject*); 36 37 virtual bool isSVGInlineTextBox() const { return true; } 38 39 virtual float virtualLogicalHeight() const { return m_logicalHeight; } 40 void setLogicalHeight(float height) { m_logicalHeight = height; } 41 42 virtual int selectionTop() { return top(); } 43 virtual int selectionHeight() { return static_cast<int>(ceilf(m_logicalHeight)); } 44 virtual int offsetForPosition(float x, bool includePartialGlyphs = true) const; 45 virtual float positionForOffset(int offset) const; 46 47 void paintSelectionBackground(PaintInfo&); 48 virtual void paint(PaintInfo&, const LayoutPoint&, LayoutUnit lineTop, LayoutUnit lineBottom); 49 virtual LayoutRect localSelectionRect(int startPosition, int endPosition); 50 51 bool mapStartEndPositionsIntoFragmentCoordinates(const SVGTextFragment&, int& startPosition, int& endPosition) const; 52 53 virtual FloatRect calculateBoundaries() const; 54 55 void clearTextFragments() { m_textFragments.clear(); } 56 Vector<SVGTextFragment>& textFragments() { return m_textFragments; } 57 const Vector<SVGTextFragment>& textFragments() const { return m_textFragments; } 58 59 virtual void dirtyLineBoxes() OVERRIDE FINAL; 60 61 bool startsNewTextChunk() const { return m_startsNewTextChunk; } 62 void setStartsNewTextChunk(bool newTextChunk) { m_startsNewTextChunk = newTextChunk; } 63 64 int offsetForPositionInFragment(const SVGTextFragment&, float position, bool includePartialGlyphs) const; 65 FloatRect selectionRectForTextFragment(const SVGTextFragment&, int fragmentStartPosition, int fragmentEndPosition, RenderStyle*); 66 67 private: 68 TextRun constructTextRun(RenderStyle*, const SVGTextFragment&) const; 69 70 bool acquirePaintingResource(GraphicsContext*&, float scalingFactor, RenderObject*, RenderStyle*); 71 void releasePaintingResource(GraphicsContext*&, const Path*); 72 73 bool prepareGraphicsContextForTextPainting(GraphicsContext*&, float scalingFactor, TextRun&, RenderStyle*); 74 void restoreGraphicsContextAfterTextPainting(GraphicsContext*&, TextRun&); 75 76 void paintDecoration(GraphicsContext*, TextDecoration, const SVGTextFragment&); 77 void paintDecorationWithStyle(GraphicsContext*, TextDecoration, const SVGTextFragment&, RenderObject* decorationRenderer); 78 void paintTextWithShadows(GraphicsContext*, RenderStyle*, TextRun&, const SVGTextFragment&, int startPosition, int endPosition); 79 void paintText(GraphicsContext*, RenderStyle*, RenderStyle* selectionStyle, const SVGTextFragment&, bool hasSelection, bool paintSelectedTextOnly); 80 81 virtual bool nodeAtPoint(const HitTestRequest&, HitTestResult&, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, LayoutUnit lineTop, LayoutUnit lineBottom) OVERRIDE; 82 83 private: 84 float m_logicalHeight; 85 unsigned m_paintingResourceMode : 4; 86 unsigned m_startsNewTextChunk : 1; 87 RenderSVGResource* m_paintingResource; 88 Vector<SVGTextFragment> m_textFragments; 89 }; 90 91 inline SVGInlineTextBox* toSVGInlineTextBox(InlineBox* box) 92 { 93 ASSERT_WITH_SECURITY_IMPLICATION(!box || box->isSVGInlineTextBox()); 94 return static_cast<SVGInlineTextBox*>(box); 95 } 96 97 } // namespace WebCore 98 99 #endif // SVGInlineTextBox_h 100