text: /*
   * Copyright (C) 2006, 2009, 2011 Apple Inc. All rights reserved.
   * Copyright (C) 2007-2008 Torch Mobile Inc.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   *
   * 1.  Redistributions of source code must retain the above copyright
   *     notice, this list of conditions and the following disclaimer.
   * 2.  Redistributions in binary form must reproduce the above copyright
   *     notice, this list of conditions and the following disclaimer in the
   *     documentation and/or other materials provided with the distribution.
   * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
   *     its contributors may be used to endorse or promote products derived
   *     from this software without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
   * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
   * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
   * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
   * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
   * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
   * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  
  #ifndef GlyphBuffer_h
  #define GlyphBuffer_h
  
  #include "platform/fonts/Glyph.h"
  #include "platform/geometry/FloatSize.h"
  #include "wtf/Vector.h"
  
  namespace WebCore {
  
  class SimpleFontData;
  
  class GlyphBuffer {
  public:
      bool isEmpty() const { return m_fontData.isEmpty(); }
      unsigned size() const { return m_fontData.size(); }
  
      void clear()
      {
          m_fontData.clear();
          m_glyphs.clear();
          m_advances.clear();
      }
  
      Glyph* glyphs(unsigned from) { return m_glyphs.data() + from; }
      FloatSize* advances(unsigned from) { return m_advances.data() + from; }
      const Glyph* glyphs(unsigned from) const { return m_glyphs.data() + from; }
      const FloatSize* advances(unsigned from) const { return m_advances.data() + from; }
  
      const SimpleFontData* fontDataAt(unsigned index) const { return m_fontData[index]; }
  
      Glyph glyphAt(unsigned index) const
      {
          return m_glyphs[index];
      }
  
      FloatSize advanceAt(unsigned index) const
      {
          return m_advances[index];
      }
  
      void add(Glyph glyph, const SimpleFontData* font, float width)
      {
          add(glyph, font, FloatSize(width, 0));
      }
  
      void add(Glyph glyph, const SimpleFontData* font, const FloatSize& advance)
      {
          m_fontData.append(font);
          m_glyphs.append(glyph);
          m_advances.append(advance);
      }
  
      void reverse()
      {
          m_fontData.reverse();
          m_glyphs.reverse();
          m_advances.reverse();
      }
  
      void expandLastAdvance(float width)
      {
          ASSERT(!isEmpty());
          FloatSize& lastAdvance = m_advances.last();
          lastAdvance.setWidth(lastAdvance.width() + width);
      }
  
  private:
      Vector<const SimpleFontData*, 2048> m_fontData;
      Vector<Glyph, 2048> m_glyphs;
      Vector<FloatSize, 2048> m_advances;
  };
  
  }
  #endif
  