1 /* 2 * This file is part of the WebKit project. 3 * 4 * Copyright (C) 2006 Oliver Hunt <ojh16@student.canterbury.ac.nz> 5 * (C) 2006 Apple Computer Inc. 6 * (C) 2007 Nikolas Zimmermann <zimmermann@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 32 namespace WebCore { 33 34 class InlineTextBox; 35 class RenderSVGRoot; 36 class SVGInlineTextBox; 37 38 struct LastGlyphInfo { LastGlyphInfoLastGlyphInfo39 LastGlyphInfo() : isValid(false) { } 40 41 String unicode; 42 String glyphName; 43 bool isValid; 44 }; 45 46 class SVGRootInlineBox : public RootInlineBox { 47 public: SVGRootInlineBox(RenderObject * obj)48 SVGRootInlineBox(RenderObject* obj) 49 : RootInlineBox(obj) 50 , m_height(0) 51 { 52 } 53 isSVGRootInlineBox()54 virtual bool isSVGRootInlineBox() { return true; } 55 virtualHeight()56 virtual int virtualHeight() const { return m_height; } setHeight(int h)57 void setHeight(int h) { m_height = h; } 58 59 virtual void paint(RenderObject::PaintInfo&, int tx, int ty); 60 61 virtual int placeBoxesHorizontally(int x, int& leftPosition, int& rightPosition, bool& needsWordSpacing); 62 virtual int verticallyAlignBoxes(int heightOfBlock); 63 64 virtual void computePerCharacterLayoutInformation(); 65 66 // Used by SVGInlineTextBox 67 const Vector<SVGTextChunk>& svgTextChunks() const; 68 69 void walkTextChunks(SVGTextChunkWalkerBase*, const SVGInlineTextBox* textBox = 0); 70 71 private: 72 friend struct SVGRootInlineBoxPaintWalker; 73 74 void layoutInlineBoxes(); 75 void layoutInlineBoxes(InlineFlowBox* start, Vector<SVGChar>::iterator& it, int& minX, int& maxX, int& minY, int& maxY); 76 77 void buildLayoutInformation(InlineFlowBox* start, SVGCharacterLayoutInfo&); 78 void buildLayoutInformationForTextBox(SVGCharacterLayoutInfo&, InlineTextBox*, LastGlyphInfo&); 79 80 void buildTextChunks(Vector<SVGChar>&, Vector<SVGTextChunk>&, InlineFlowBox* start); 81 void buildTextChunks(Vector<SVGChar>&, InlineFlowBox* start, SVGTextChunkLayoutInfo&); 82 void layoutTextChunks(); 83 84 SVGTextDecorationInfo retrievePaintServersForTextDecoration(RenderObject* start); 85 86 private: 87 int m_height; 88 Vector<SVGChar> m_svgChars; 89 Vector<SVGTextChunk> m_svgTextChunks; 90 }; 91 92 // Shared with SVGRenderTreeAsText / SVGInlineTextBox 93 TextRun svgTextRunForInlineTextBox(const UChar*, int len, RenderStyle* style, const InlineTextBox* textBox, float xPos); 94 FloatPoint topLeftPositionOfCharacterRange(Vector<SVGChar>::iterator start, Vector<SVGChar>::iterator end); 95 float cummulatedWidthOfInlineBoxCharacterRange(SVGInlineBoxCharacterRange& range); 96 float cummulatedHeightOfInlineBoxCharacterRange(SVGInlineBoxCharacterRange& range); 97 98 RenderSVGRoot* findSVGRootObject(RenderObject* start); 99 100 } // namespace WebCore 101 102 #endif // ENABLE(SVG) 103 104 #endif // SVGRootInlineBox_h 105