1 /* 2 * (C) 1999 Lars Knoll (knoll (at) kde.org) 3 * (C) 2000 Dirk Mueller (mueller (at) kde.org) 4 * Copyright (C) 2004, 2005, 2006, 2007 Apple Inc. 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 23 #ifndef RenderTextFragment_h 24 #define RenderTextFragment_h 25 26 #include "RenderText.h" 27 28 namespace WebCore { 29 30 // Used to represent a text substring of an element, e.g., for text runs that are split because of 31 // first letter and that must therefore have different styles (and positions in the render tree). 32 // We cache offsets so that text transformations can be applied in such a way that we can recover 33 // the original unaltered string from our corresponding DOM node. 34 class RenderTextFragment : public RenderText { 35 public: 36 RenderTextFragment(Node*, StringImpl*, int startOffset, int length); 37 RenderTextFragment(Node*, StringImpl*); 38 39 virtual bool isTextFragment() const { return true; } 40 41 virtual void destroy(); 42 43 unsigned start() const { return m_start; } 44 unsigned end() const { return m_end; } 45 46 RenderObject* firstLetter() const { return m_firstLetter; } 47 void setFirstLetter(RenderObject* firstLetter) { m_firstLetter = firstLetter; } 48 49 StringImpl* contentString() const { return m_contentString.get(); } 50 virtual PassRefPtr<StringImpl> originalText() const; 51 52 private: 53 virtual void setTextInternal(PassRefPtr<StringImpl>); 54 virtual UChar previousCharacter(); 55 56 unsigned m_start; 57 unsigned m_end; 58 RefPtr<StringImpl> m_contentString; 59 RenderObject* m_firstLetter; 60 }; 61 62 } // namespace WebCore 63 64 #endif // RenderTextFragment_h 65
