freetype/src/cache/ftcimage.c

#include <cache/ftcimage.h>

  static
  void       ftc_done_glyph_image( FTC_Image_Queue  queue,
                                   FTC_ImageNode    node )
  {
    FT_UNUSED(queue);
    FT_Done_Glyph( FTC_IMAGENODE_GET_GLYPH(node) );
  }

  static
  FT_ULong   ftc_size_bitmap_image( FTC_Image_Queue  queue,
                                    FTC_ImageNode    node )
  {
    FT_Long         pitch;
    FT_BitmapGlyph  glyph;
    
    FT_UNUSED(queue);
    glyph = (FT_BitmapGlyph)FTC_IMAGENODE_GET_GLYPH(node);
    pitch = glyph->bitmap.pitch;
    if (pitch < 0)
      pitch = -pitch;
      
    return (FT_ULong)(pitch * glyph->bitmap->rows + sizeof(*glyph));
  }

  static
  FT_ULong   ftc_size_outline_image( FTC_Image_Queue  queue,
                                     FTC_ImageNode    node )
  {
    FT_Long          pitch;
    FT_OutlineGlyph  glyph;
    FT_Outline*      outline;
    
    FT_UNUSED(queue);
    glyph   = (FT_OutlineGlyph)FTC_IMAGENODE_GET_GLYPH(node);
    outline = &glyph->outline;
    
    return (FT_ULong)( 
           outline->n_points *  (sizeof(FT_Vector)+sizeof(FT_Byte))  +
           outline->n_contours * sizeof(FT_Short)                    +
           sizeof(*glyph) );
  }

 /*******************************************************************/
 /*******************************************************************/
 /*****                                                         *****/
 /*****              MONOCHROME BITMAP CALLBACKS                *****/
 /*****                                                         *****/
 /*******************************************************************/
 /*******************************************************************/

  static
  FT_Error   ftc_init_mono_image( FTC_Image_Queue  queue,
                                  FTC_ImageNode    node )
  {  
    FT_Face      face;
    FT_Size      size;
    FT_Error     error;

    
    error = FTC_Manager_Lookup_Size( queue->manager,
                                     &queue->size_rec,
                                     &face, &size );
    if (!error)
    {
      FT_UInt  glyph_index = FTC_IMAGENODE_GINDEX(node);

      
      error = FT_Load_Glyph( face, glyph_index,
                             FT_LOAD_RENDER | FT_LOAD_MONOCHROME );
      if (!error)
      {
        if ( face->glyph->format            != ft_image_format_bitmap ||
             face->glyph->bitmap.pixel_mode != ft_pixel_mode_mono )
        {
          /* there is no monochrome glyph for this font !! */
          error = FT_Err_Invalid_Glyph_Index;
        }
        else
        {
          /* ok, copy it */
          FT_Glyph  glyph;
          
          
          error = FT_Get_Glyph( face->glyph, &glyph );
          if (!error)
            FTC_IMAGENODE_SET_GLYPH(node,glyph);
        }
      }
    }
    return error;
  }


  static
  FT_Error   ftc_init_gray_image( FTC_Image_Queue  queue,
                                  FTC_ImageNode    node )
  {  
    FT_Face      face;
    FT_Size      size;
    FT_Error     error;
    

    error = FTC_Manager_Lookup_Size( queue->manager,
                                     &queue->size_rec,
                                     &face, &size );
    if (!error)
    {
      FT_UInt  glyph_index = FTC_IMAGENODE_GINDEX(node);
      

      error = FT_Load_Glyph( face, glyph_index,
                             FT_LOAD_RENDER );
      if (!error)
      {
        if ( face->glyph->format            != ft_image_format_bitmap ||
             face->glyph->bitmap.pixel_mode != ft_pixel_mode_grays )
        {
          /* there is no monochrome glyph for this font !! */
          error = FT_Err_Invalid_Glyph_Index;
        }
        else
        {
          /* ok, copy it */
          FT_Glyph  glyph;
          
          
          error = FT_Get_Glyph( face->glyph, &glyph );
          if (!error)
            FTC_IMAGENODE_SET_GLYPH(node,glyph);
        }
      }
    }
    return error;
  }


 /*******************************************************************/
 /*******************************************************************/
 /*****                                                         *****/
 /*****              MONOCHROME BITMAP CALLBACKS                *****/
 /*****                                                         *****/
 /*******************************************************************/
 /*******************************************************************/