a4e2894e03
"type1z" -> "type1" "raster1" -> "raster" note that I didn't rename all files. We'll have to endure the "z1..." crazyness unless we perform a _big_ sed on the sources :-)
277 lines
7.7 KiB
C
277 lines
7.7 KiB
C
/***************************************************************************/
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/* */
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/* ftrend1.c */
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/* */
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/* The FreeType glyph rasterizer interface (body). */
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/* */
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/* Copyright 1996-2000 by */
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/* David Turner, Robert Wilhelm, and Werner Lemberg. */
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/* */
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/* This file is part of the FreeType project, and may only be used, */
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/* modified, and distributed under the terms of the FreeType project */
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/* license, LICENSE.TXT. By continuing to use, modify, or distribute */
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/* this file you indicate that you have read the license and */
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/* understand and accept it fully. */
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/* */
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/***************************************************************************/
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#include <freetype/internal/ftobjs.h>
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#include <freetype/ftoutln.h>
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#ifdef FT_FLAT_COMPILE
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#include "ftrend1.h"
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#include "ftraster.h"
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#else
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#include <raster/ftrend1.h>
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#include <raster/ftraster.h>
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#endif
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/* initialize renderer -- init its raster */
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static
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FT_Error ft_raster1_init( FT_Renderer render )
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{
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FT_Library library = FT_MODULE_LIBRARY( render );
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render->clazz->raster_class->raster_reset( render->raster,
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library->raster_pool,
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library->raster_pool_size );
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return FT_Err_Ok;
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}
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/* set render-specific mode */
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static
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FT_Error ft_raster1_set_mode( FT_Renderer render,
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FT_ULong mode_tag,
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FT_Pointer data )
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{
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/* we simply pass it to the raster */
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return render->clazz->raster_class->raster_set_mode( render->raster,
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mode_tag,
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data );
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}
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/* transform a given glyph image */
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static
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FT_Error ft_raster1_transform( FT_Renderer render,
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FT_GlyphSlot slot,
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FT_Matrix* matrix,
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FT_Vector* delta )
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{
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FT_Error error = FT_Err_Ok;
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if ( slot->format != render->glyph_format )
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{
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error = FT_Err_Invalid_Argument;
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goto Exit;
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}
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if ( matrix )
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FT_Outline_Transform( &slot->outline, matrix );
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if ( delta )
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FT_Outline_Translate( &slot->outline, delta->x, delta->y );
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Exit:
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return error;
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}
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/* return the glyph's control box */
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static
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void ft_raster1_get_cbox( FT_Renderer render,
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FT_GlyphSlot slot,
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FT_BBox* cbox )
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{
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MEM_Set( cbox, 0, sizeof ( *cbox ) );
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if ( slot->format == render->glyph_format )
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FT_Outline_Get_CBox( &slot->outline, cbox );
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}
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/* convert a slot's glyph image into a bitmap */
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static
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FT_Error ft_raster1_render( FT_Renderer render,
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FT_GlyphSlot slot,
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FT_UInt mode,
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FT_Vector* origin )
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{
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FT_Error error;
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FT_Outline* outline;
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FT_BBox cbox;
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FT_UInt width, height, pitch;
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FT_Bitmap* bitmap;
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FT_Memory memory;
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FT_Raster_Params params;
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/* check glyph image format */
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if ( slot->format != render->glyph_format )
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{
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error = FT_Err_Invalid_Argument;
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goto Exit;
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}
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/* check rendering mode */
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if ( mode != ft_render_mode_mono )
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{
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/* raster1 is only capable of producing monochrome bitmaps */
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if ( render->clazz == &ft_raster1_renderer_class )
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return FT_Err_Cannot_Render_Glyph;
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}
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else
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{
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/* raster5 is only capable of producing 5-gray-levels bitmaps */
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if ( render->clazz == &ft_raster5_renderer_class )
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return FT_Err_Cannot_Render_Glyph;
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}
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outline = &slot->outline;
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/* translate the outline to the new origin if needed */
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if ( origin )
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FT_Outline_Translate( outline, origin->x, origin->y );
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/* compute the control box, and grid fit it */
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FT_Outline_Get_CBox( outline, &cbox );
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cbox.xMin &= -64;
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cbox.yMin &= -64;
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cbox.xMax = ( cbox.xMax + 63 ) & -64;
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cbox.yMax = ( cbox.yMax + 63 ) & -64;
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width = ( cbox.xMax - cbox.xMin ) >> 6;
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height = ( cbox.yMax - cbox.yMin ) >> 6;
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bitmap = &slot->bitmap;
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memory = render->root.memory;
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/* release old bitmap buffer */
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if ( slot->flags & ft_glyph_own_bitmap )
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{
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FREE( bitmap->buffer );
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slot->flags &= ~ft_glyph_own_bitmap;
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}
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/* allocate new one, depends on pixel format */
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if ( !( mode & ft_render_mode_mono ) )
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{
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/* we pad to 32 bits, only for backwards compatibility with FT 1.x */
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pitch = ( width + 3 ) & -4;
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bitmap->pixel_mode = ft_pixel_mode_grays;
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bitmap->num_grays = 256;
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}
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else
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{
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pitch = ( width + 7 ) >> 3;
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bitmap->pixel_mode = ft_pixel_mode_mono;
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}
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bitmap->width = width;
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bitmap->rows = height;
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bitmap->pitch = pitch;
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if ( ALLOC( bitmap->buffer, (FT_ULong)pitch * height ) )
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goto Exit;
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slot->flags |= ft_glyph_own_bitmap;
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/* translate outline to render it into the bitmap */
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FT_Outline_Translate( outline, -cbox.xMin, -cbox.yMin );
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/* set up parameters */
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params.target = bitmap;
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params.source = outline;
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params.flags = 0;
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if ( bitmap->pixel_mode == ft_pixel_mode_grays )
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params.flags |= ft_raster_flag_aa;
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/* render outline into the bitmap */
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error = render->raster_render( render->raster, ¶ms );
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if ( error )
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goto Exit;
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slot->format = ft_glyph_format_bitmap;
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slot->bitmap_left = cbox.xMin >> 6;
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slot->bitmap_top = cbox.yMax >> 6;
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Exit:
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return error;
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}
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FT_CPLUSPLUS( const FT_Renderer_Class ) ft_raster1_renderer_class =
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{
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{
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ft_module_renderer,
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sizeof( FT_RendererRec ),
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"raster1",
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0x10000L,
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0x20000L,
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0, /* module specific interface */
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(FT_Module_Constructor)ft_raster1_init,
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(FT_Module_Destructor) 0,
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(FT_Module_Requester) 0
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},
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ft_glyph_format_outline,
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(FTRenderer_render) ft_raster1_render,
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(FTRenderer_transform)ft_raster1_transform,
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(FTRenderer_getCBox) ft_raster1_get_cbox,
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(FTRenderer_setMode) ft_raster1_set_mode,
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(FT_Raster_Funcs*) &ft_standard_raster
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};
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/* This renderer is _NOT_ part of the default modules; you will need */
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/* to register it by hand in your application. It should only be */
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/* used for backwards-compatibility with FT 1.x anyway. */
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/* */
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FT_CPLUSPLUS( const FT_Renderer_Class ) ft_raster5_renderer_class =
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{
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{
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ft_module_renderer,
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sizeof( FT_RendererRec ),
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"raster5",
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0x10000L,
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0x20000L,
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0, /* module specific interface */
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(FT_Module_Constructor)ft_raster1_init,
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(FT_Module_Destructor) 0,
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(FT_Module_Requester) 0
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},
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ft_glyph_format_outline,
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(FTRenderer_render) ft_raster1_render,
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(FTRenderer_transform)ft_raster1_transform,
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(FTRenderer_getCBox) ft_raster1_get_cbox,
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(FTRenderer_setMode) ft_raster1_set_mode,
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(FT_Raster_Funcs*) &ft_standard_raster
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};
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/* END */
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