kc3-lang/freetype/src/raster1/ftrend1.c

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• Hash : 3a89c2a4
  Author :
  Date : 2000-08-01T17:05:20
  

  Removing FT_MAKE_OPTION_SINGLE_LIBRARY_OBJECT. It has never worked. Instead, define BASE_DEF() and BASE_FUNC() similarly to FT_EXPORT_DEF() and FT_EXPORT_FUNC(), respectively, allowing the programmer to define proper types and/or export lists for multiple DLLs if necessary (e.g. ftbase.dll -- standalone, fttype1.dll -- needs ftbase.dll, etc.). The library is finally compiling and linking natively with a C++ compiler!

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• src/raster1/ftrend1.c

• /***************************************************************************/
  /*                                                                         */
  /*  ftrend1.c                                                              */
  /*                                                                         */
  /*    The FreeType glyph rasterizer interface (body).                      */
  /*                                                                         */
  /*  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.                                        */
  /*                                                                         */
  /***************************************************************************/
  
  
  #include <freetype/internal/ftobjs.h>
  #include <freetype/ftoutln.h>
  
  
  #ifdef FT_FLAT_COMPILE
  
  #include "ftrend1.h"
  #include "ftraster.h"
  
  #else
  
  #include <raster1/ftrend1.h>
  #include <raster1/ftraster.h>
  
  #endif
  
  
    /* initialize renderer -- init its raster */
    static
    FT_Error  ft_raster1_init( FT_Renderer  render )
    {
      FT_Library  library = FT_MODULE_LIBRARY( render );
  
  
      render->clazz->raster_class->raster_reset( render->raster,
                                                 library->raster_pool,
                                                 library->raster_pool_size );
  
      return FT_Err_Ok;
    }
  
  
    /* set render-specific mode */
    static
    FT_Error  ft_raster1_set_mode( FT_Renderer  render,
                                   FT_ULong     mode_tag,
                                   FT_Pointer   data )
    {
      /* we simply pass it to the raster */
      return render->clazz->raster_class->raster_set_mode( render->raster,
                                                           mode_tag,
                                                           data );
    }
  
  
    /* transform a given glyph image */
    static
    FT_Error  ft_raster1_transform( FT_Renderer   render,
                                    FT_GlyphSlot  slot,
                                    FT_Matrix*    matrix,
                                    FT_Vector*    delta )
    {
      FT_Error error = FT_Err_Ok;
  
  
      if ( slot->format != render->glyph_format )
      {
        error = FT_Err_Invalid_Argument;
        goto Exit;
      }
  
      if ( matrix )
        FT_Outline_Transform( &slot->outline, matrix );
  
      if ( delta )
        FT_Outline_Translate( &slot->outline, delta->x, delta->y );
  
    Exit:
      return error;
    }
  
  
    /* return the glyph's control box */
    static
    void  ft_raster1_get_cbox( FT_Renderer   render,
                               FT_GlyphSlot  slot,
                               FT_BBox*      cbox )
    {
      MEM_Set( cbox, 0, sizeof ( *cbox ) );
  
      if ( slot->format == render->glyph_format )
        FT_Outline_Get_CBox( &slot->outline, cbox );
    }
  
  
    /* convert a slot's glyph image into a bitmap */
    static
    FT_Error  ft_raster1_render( FT_Renderer   render,
                                 FT_GlyphSlot  slot,
                                 FT_UInt       mode,
                                 FT_Vector*    origin )
    {
      FT_Error     error;
      FT_Outline*  outline;
      FT_BBox      cbox;
      FT_UInt      width, height, pitch;
      FT_Bitmap*   bitmap;
      FT_Memory    memory;
  
      FT_Raster_Params  params;
  
  
      /* check glyph image format */
      if ( slot->format != render->glyph_format )
      {
        error = FT_Err_Invalid_Argument;
        goto Exit;
      }
  
      /* check rendering mode */
      if ( mode != ft_render_mode_mono )
      {
        /* raster1 is only capable of producing monochrome bitmaps */
        if ( render->clazz == &ft_raster1_renderer_class )
          return FT_Err_Cannot_Render_Glyph;
      }
      else
      {
        /* raster5 is only capable of producing 5-gray-levels bitmaps */
        if ( render->clazz == &ft_raster5_renderer_class )
          return FT_Err_Cannot_Render_Glyph;
      }
  
      outline = &slot->outline;
  
      /* translate the outline to the new origin if needed */
      if ( origin )
        FT_Outline_Translate( outline, origin->x, origin->y );
  
      /* compute the control box, and grid fit it */
      FT_Outline_Get_CBox( outline, &cbox );
  
      cbox.xMin &= -64;
      cbox.yMin &= -64;
      cbox.xMax  = ( cbox.xMax + 63 ) & -64;
      cbox.yMax  = ( cbox.yMax + 63 ) & -64;
  
      width  = ( cbox.xMax - cbox.xMin ) >> 6;
      height = ( cbox.yMax - cbox.yMin ) >> 6;
      bitmap = &slot->bitmap;
      memory = render->root.memory;
  
      /* release old bitmap buffer */
      if ( slot->flags & ft_glyph_own_bitmap )
      {
        FREE( bitmap->buffer );
        slot->flags &= ~ft_glyph_own_bitmap;
      }
  
      /* allocate new one, depends on pixel format */
      if ( !( mode & ft_render_mode_mono ) )
      {
        /* we pad to 32 bits, only for backwards compatibility with FT 1.x */
        pitch = ( width + 3 ) & -4;
        bitmap->pixel_mode = ft_pixel_mode_grays;
        bitmap->num_grays  = 256;
      }
      else
      {
        pitch = ( width + 7 ) >> 3;
        bitmap->pixel_mode = ft_pixel_mode_mono;
      }
  
      bitmap->width = width;
      bitmap->rows  = height;
      bitmap->pitch = pitch;
  
      if ( ALLOC( bitmap->buffer, (FT_ULong)pitch * height ) )
        goto Exit;
  
      slot->flags |= ft_glyph_own_bitmap;
  
      /* translate outline to render it into the bitmap */
      FT_Outline_Translate( outline, -cbox.xMin, -cbox.yMin );
  
      /* set up parameters */
      params.target = bitmap;
      params.source = outline;
      params.flags  = 0;
  
      if ( bitmap->pixel_mode == ft_pixel_mode_grays )
        params.flags |= ft_raster_flag_aa;
  
      /* render outline into the bitmap */
      error = render->raster_render( render->raster, &params );
      if ( error )
        goto Exit;
  
      slot->format      = ft_glyph_format_bitmap;
      slot->bitmap_left = cbox.xMin >> 6;
      slot->bitmap_top  = cbox.yMax >> 6;
  
    Exit:
      return error;
    }
  
  
    FT_EXPORT_VAR( const FT_Renderer_Class )  ft_raster1_renderer_class =
    {
      {
        ft_module_renderer,
        sizeof( FT_RendererRec ),
  
        "raster1",
        0x10000L,
        0x20000L,
  
        0,    /* module specific interface */
  
        (FT_Module_Constructor)ft_raster1_init,
        (FT_Module_Destructor) 0,
        (FT_Module_Requester)  0
      },
  
      ft_glyph_format_outline,
  
      (FTRenderer_render)   ft_raster1_render,
      (FTRenderer_transform)ft_raster1_transform,
      (FTRenderer_getCBox)  ft_raster1_get_cbox,
      (FTRenderer_setMode)  ft_raster1_set_mode,
  
      (FT_Raster_Funcs*)    &ft_standard_raster
    };
  
  
    /* This renderer is _NOT_ part of the default modules; you will need */
    /* to register it by hand in your application.  It should only be    */
    /* used for backwards-compatibility with FT 1.x anyway.              */
    /*                                                                   */
    FT_EXPORT_VAR( const FT_Renderer_Class )  ft_raster5_renderer_class =
    {
      {
        ft_module_renderer,
        sizeof( FT_RendererRec ),
  
        "raster5",
        0x10000L,
        0x20000L,
  
        0,    /* module specific interface */
  
        (FT_Module_Constructor)ft_raster1_init,
        (FT_Module_Destructor) 0,
        (FT_Module_Requester)  0
      },
  
      ft_glyph_format_outline,
  
      (FTRenderer_render)   ft_raster1_render,
      (FTRenderer_transform)ft_raster1_transform,
      (FTRenderer_getCBox)  ft_raster1_get_cbox,
      (FTRenderer_setMode)  ft_raster1_set_mode,
  
      (FT_Raster_Funcs*)    &ft_standard_raster
    };
  
  
  /* END */
  

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