/***************************************************************************//*                                                                         *//*  ftrend1.c                                                              *//*                                                                         *//*    The FreeType glyph rasterizer interface (body).                      *//*                                                                         *//*  Copyright 1996-2001, 2002 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 <ft2build.h>#include FT_INTERNAL_OBJECTS_H#include FT_OUTLINE_H#include "ftrend1.h"#include "ftraster.h"#include "rasterrs.h"  /* 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 Raster_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 = Raster_Err_Ok;    if ( slot->format != render->glyph_format )    {      error = Raster_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 )  {    FT_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 = Raster_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 Raster_Err_Cannot_Render_Glyph;    }    else    {      /* raster5 is only capable of producing 5-gray-levels bitmaps */      if ( render->clazz == &ft_raster5_renderer_class )        return Raster_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 )    {      FT_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;      /*  pitch = ( ( width + 15 ) >> 4 ) << 1; */      bitmap->pixel_mode = ft_pixel_mode_mono;    }    bitmap->width = width;    bitmap->rows  = height;    bitmap->pitch = pitch;    if ( FT_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 );        FT_Outline_Translate( outline, cbox.xMin, cbox.yMin );        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_CALLBACK_TABLE_DEF  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_CALLBACK_TABLE_DEF  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 */