1 /* 2 * Copyright (C) 2011 Apple Inc. All rights reserved. 3 * 4 * This library is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU Library General Public 6 * License as published by the Free Software Foundation; either 7 * version 2 of the License, or (at your option) any later version. 8 * 9 * This library is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 * Library General Public License for more details. 13 * 14 * You should have received a copy of the GNU Library General Public License 15 * along with this library; see the file COPYING.LIB. If not, write to 16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 17 * Boston, MA 02110-1301, USA. 18 * 19 */ 20 21 #ifndef RenderCombineText_h 22 #define RenderCombineText_h 23 24 #include "RenderText.h" 25 26 namespace WebCore { 27 28 class RenderCombineText : public RenderText { 29 public: 30 RenderCombineText(Node*, PassRefPtr<StringImpl>); 31 32 void combineText(); 33 void adjustTextOrigin(FloatPoint& textOrigin, const FloatRect& boxRect) const; 34 void charactersToRender(int start, const UChar*& characters, int& length) const; 35 bool isCombined() const { return m_isCombined; } 36 float combinedTextWidth(const Font& font) const { return font.size(); } 37 const Font& originalFont() const { return parent()->style()->font(); } 38 39 private: 40 virtual bool isCombineText() const { return true; } 41 virtual float width(unsigned from, unsigned length, const Font&, float xPosition, HashSet<const SimpleFontData*>* fallbackFonts = 0, GlyphOverflow* = 0) const; 42 virtual const char* renderName() const { return "RenderCombineText"; } 43 virtual void styleDidChange(StyleDifference, const RenderStyle* oldStyle); 44 virtual void setTextInternal(PassRefPtr<StringImpl>); 45 46 float m_combinedTextWidth; 47 bool m_isCombined : 1; 48 bool m_needsFontUpdate : 1; 49 }; 50 51 inline RenderCombineText* toRenderCombineText(RenderObject* object) 52 { 53 ASSERT(!object || object->isCombineText()); 54 return static_cast<RenderCombineText*>(object); 55 } 56 57 inline const RenderCombineText* toRenderCombineText(const RenderObject* object) 58 { 59 ASSERT(!object || object->isCombineText()); 60 return static_cast<const RenderCombineText*>(object); 61 } 62 63 // This will catch anyone doing an unnecessary cast. 64 void toRenderCombineText(const RenderCombineText*); 65 66 } // namespace WebCore 67 68 #endif // RenderCombineText_h 69
