1 /* 2 * This file is part of the WebKit project. 3 * 4 * Copyright (C) 2006 Oliver Hunt <ojh16 (at) student.canterbury.ac.nz> 5 * (C) 2006 Apple Computer Inc. 6 * (C) 2007 Nikolas Zimmermann <zimmermann (at) kde.org> 7 * 8 * This library is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU Library General Public 10 * License as published by the Free Software Foundation; either 11 * version 2 of the License, or (at your option) any later version. 12 * 13 * This library is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 16 * Library General Public License for more details. 17 * 18 * You should have received a copy of the GNU Library General Public License 19 * along with this library; see the file COPYING.LIB. If not, write to 20 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 21 * Boston, MA 02110-1301, USA. 22 * 23 */ 24 25 #ifndef SVGRootInlineBox_h 26 #define SVGRootInlineBox_h 27 28 #if ENABLE(SVG) 29 #include "RootInlineBox.h" 30 #include "SVGCharacterLayoutInfo.h" 31 #include "SVGRenderSupport.h" 32 33 namespace WebCore { 34 35 class InlineTextBox; 36 class RenderSVGRoot; 37 class SVGInlineTextBox; 38 39 struct LastGlyphInfo { 40 LastGlyphInfo() : isValid(false) { } 41 42 String unicode; 43 String glyphName; 44 bool isValid; 45 }; 46 47 class SVGRootInlineBox : public RootInlineBox, protected SVGRenderBase { 48 public: 49 SVGRootInlineBox(RenderObject* obj) 50 : RootInlineBox(obj) 51 , m_height(0) 52 { 53 } 54 virtual const SVGRenderBase* toSVGRenderBase() const { return this; } 55 56 virtual bool isSVGRootInlineBox() { return true; } 57 58 virtual int virtualHeight() const { return m_height; } 59 void setHeight(int h) { m_height = h; } 60 61 virtual void paint(RenderObject::PaintInfo&, int tx, int ty); 62 63 virtual int placeBoxesHorizontally(int x, int& leftPosition, int& rightPosition, bool& needsWordSpacing); 64 virtual int verticallyAlignBoxes(int heightOfBlock); 65 66 virtual void computePerCharacterLayoutInformation(); 67 68 virtual FloatRect objectBoundingBox() const { return FloatRect(); } 69 virtual FloatRect repaintRectInLocalCoordinates() const { return FloatRect(); } 70 71 // Used by SVGInlineTextBox 72 const Vector<SVGTextChunk>& svgTextChunks() const; 73 74 void walkTextChunks(SVGTextChunkWalkerBase*, const SVGInlineTextBox* textBox = 0); 75 76 private: 77 friend struct SVGRootInlineBoxPaintWalker; 78 79 void layoutInlineBoxes(); 80 void layoutInlineBoxes(InlineFlowBox* start, Vector<SVGChar>::iterator& it, int& minX, int& maxX, int& minY, int& maxY); 81 82 void buildLayoutInformation(InlineFlowBox* start, SVGCharacterLayoutInfo&); 83 void buildLayoutInformationForTextBox(SVGCharacterLayoutInfo&, InlineTextBox*, LastGlyphInfo&); 84 85 void buildTextChunks(Vector<SVGChar>&, Vector<SVGTextChunk>&, InlineFlowBox* start); 86 void buildTextChunks(Vector<SVGChar>&, InlineFlowBox* start, SVGTextChunkLayoutInfo&); 87 void layoutTextChunks(); 88 89 SVGTextDecorationInfo retrievePaintServersForTextDecoration(RenderObject* start); 90 91 private: 92 int m_height; 93 Vector<SVGChar> m_svgChars; 94 Vector<SVGTextChunk> m_svgTextChunks; 95 }; 96 97 // Shared with SVGRenderTreeAsText / SVGInlineTextBox 98 TextRun svgTextRunForInlineTextBox(const UChar*, int len, RenderStyle* style, const InlineTextBox* textBox, float xPos); 99 FloatPoint topLeftPositionOfCharacterRange(Vector<SVGChar>::iterator start, Vector<SVGChar>::iterator end); 100 float cummulatedWidthOfInlineBoxCharacterRange(SVGInlineBoxCharacterRange& range); 101 float cummulatedHeightOfInlineBoxCharacterRange(SVGInlineBoxCharacterRange& range); 102 103 RenderSVGRoot* findSVGRootObject(RenderObject* start); 104 105 } // namespace WebCore 106 107 #endif // ENABLE(SVG) 108 109 #endif // SVGRootInlineBox_h 110