kc3-lang/freetype/include/freetype/ftrender.h

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• Hash : 53078ee7
  Author :
  Date : 2000-06-22T00:26:54
  

  removed obsolete headers, added new ones

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• include/freetype/ftrender.h

• /***************************************************************************/
  /*                                                                         */
  /*  ftrender.h                                                             */
  /*                                                                         */
  /*  FreeType renderer modules public interface                             */
  /*                                                                         */
  /*  Copyright 1996-2000 by                                                 */
  /*  David Turner, Robert Wilhelm, and Werner Lemberg.                      */
  /*                                                                         */
  /*  This file is part of the FreeType project, and may only be used        */
  /*  modified and distributed under the terms of the FreeType project       */
  /*  license, LICENSE.TXT.  By continuing to use, modify, or distribute     */
  /*  this file you indicate that you have read the license and              */
  /*  understand and accept it fully.                                        */
  /*                                                                         */
  /***************************************************************************/
  
  #ifndef FTRENDER_H
  #define FTRENDER_H
  
  #include <freetype/ftmodule.h>
  
   /*************************************************************************
    *
    *  <Struct>
    *     FT_Renderer_Class
    *
    *  <Description>
    *     The renderer module class descriptor.
    *
    *  <Fields>
    *     root          :: the root FT_Module_Class fields
    *
    *     glyph_format  :: the glyph image format this renderer handles
    *
    *     render_glyph  :: a method used to render the image that is in a
    *                      given glyph slot into a bitmap.
    *
    *     set_mode      :: a method used to pass additional parameters
    *
    *     raster_class  :: for ft_glyph_format_outline renderers only, this
    *                      is a pointer to its raster's class.
    *
    *     raster        :: for ft_glyph_format_outline renderers only. this
    *                      is a pointer to the corresponding raster object,
    *                      if any..
    *
    *************************************************************************/
  
    typedef FT_Error  (*FTRenderer_render)( FT_Renderer   renderer,
                                            FT_GlyphSlot  slot,
                                            FT_UInt       mode );
  
    typedef FT_Error  (*FTRenderer_transform)( FT_Renderer   renderer,
                                               FT_GlyphSlot  slot,
                                               FT_Matrix*    matrix,
                                               FT_Vector*    delta );
  
    typedef void      (*FTRenderer_getCBox)( FT_Renderer   renderer,
                                             FT_GlyphSlot  slot,
                                             FT_BBox      *cbox );
  
    typedef FT_Error  (*FTRenderer_setMode)( FT_Renderer  renderer,
                                             FT_ULong     mode_tag,
                                             FT_Pointer   mode_ptr );
  
    typedef struct  FT_Renderer_Class_
    {
      FT_Module_Class       root;
      
      FT_Glyph_Format       glyph_format;
      
      FTRenderer_render     render_glyph;
      FTRenderer_transform  transform_glyph;
      FTRenderer_getCBox    get_glyph_cbox;
      FTRenderer_setMode    set_mode;
  
      FT_Raster_Funcs*      raster_class;
  
    } FT_Renderer_Class;
  
  
    enum
    {
      ft_render_mode_antialias = 1
    };
  
   /*************************************************************************
    *
    *  <Function>
    *     FT_Get_Renderer
    *
    *  <Description>
    *     retrieves the current renderer for a given glyph format.
    *
    *  <Input>
    *     library  :: handle to library object
    *     format   :: glyph format
    *
    *  <Return>
    *     renderer handle. 0 if none found.
    *
    *  <Note>
    *     An error will be returned if a module already exists by that
    *     name, or if the module requires a version of freetype that is
    *     too great
    *
    *     To add a new renderer, simply use FT_Add_Module. To retrieve
    *     a renderer by its name, use FT_Get_Module
    *
    *************************************************************************/
    
    FT_EXPORT_DEF(FT_Renderer)  FT_Get_Renderer( FT_Library       library,
                                                 FT_Glyph_Format  format );
  
  
   /*************************************************************************
    *
    *  <Function>
    *     FT_Set_Renderer
    *
    *  <Description>
    *     Sets the current renderer to use, and set additional mode
    *
    *  <Input>
    *     library     :: handle to library object
    *     renderer    :: handle to renderer object
    *     num_params  :: number of additional parameters
    *     params      :: additional parameters
    *
    *  <Return>
    *     Error code. 0 means success.
    *
    *  <Note>
    *     in case of success, the renderer will be used to convert glyph
    *     images in the renderer's known format into bitmaps.
    *
    *     This doesn't change the current renderer for other formats..
    *
    *************************************************************************/
    
    FT_EXPORT_DEF(FT_Error) FT_Set_Renderer( FT_Library     library,
                                             FT_Renderer    renderer,
                                             FT_UInt        num_params,
                                             FT_Parameter*  parameters );
  
  
  
  #endif /* FTMODULE_H */
  
  
  /* END */
  

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