kc3-lang/ftgl/src/FTLayout/FTLayoutImpl.h

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• Author : sammy
  Date : 2008-05-05 14:55:11
  Hash : f7b79437
  Message : * Refactor FTGlyph, FTFont and FTLayout so that client applications can hopefully subclass them.

• src/FTLayout/FTLayoutImpl.h

• /*
   * FTGL - OpenGL font library
   *
   * Copyright (c) 2001-2004 Henry Maddocks <ftgl@opengl.geek.nz>
   *
   * Permission is hereby granted, free of charge, to any person obtaining
   * a copy of this software and associated documentation files (the
   * "Software"), to deal in the Software without restriction, including
   * without limitation the rights to use, copy, modify, merge, publish,
   * distribute, sublicense, and/or sell copies of the Software, and to
   * permit persons to whom the Software is furnished to do so, subject to
   * the following conditions:
   *
   * The above copyright notice and this permission notice shall be
   * included in all copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
   * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
   * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
   * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
   * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
   * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
   * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
   */
  
  #ifndef __FTLayoutImpl__
  #define __FTLayoutImpl__
  
  #include "FTSize.h"
  #include "FTGlyphContainer.h"
  
  
  class FTLayoutImpl
  {
          friend class FTLayout;
  
      protected:
          FTLayoutImpl();
  
          virtual ~FTLayoutImpl();
  
      protected:
          /**
           * Current pen or cursor position;
           */
          FTPoint pen;
  
          /**
           * Expose <code>FTFont::DoRender</code> method to derived classes.
           *
           * @param font      The font that contains the glyph.
           * @param chr       current character
           * @param nextChr   next character
           * @param renderMode  Render mode to diplay
           * @see FTFont::DoRender
           */
          void DoRender(FTFont *font, const unsigned int chr,
                        const unsigned int nextChr, int renderMode);
  
          /**
           * Expose <code>FTFont::CheckGlyph</code> method to derived classes.
           *
           * @param font The font that contains the glyph.
           * @param chr  character index
           */
          void CheckGlyph(FTFont *font, const unsigned int Chr);
  
          /**
           * Expose the FTFont <code>glyphList</code> to our derived classes.
           *
           * @param font The font to perform the query on.
           * @param Char The character corresponding to the glyph to query.
           *
           * @return A pointer to the glyphList of font.
           */
          FTGlyphContainer *GetGlyphs(FTFont *font);
  
          /**
           * Expose the FTFont <code>charSize</code> to our derived classes.
           *
           * @param The font to perform the query on.
           *
           * @return A reference to the charSize object of font.
           */
          FTSize &GetCharSize(FTFont *font);
  
          /**
           * Current error code. Zero means no error.
           */
          FT_Error err;
  };
  
  #endif  //  __FTLayoutImpl__