/***************************************************************************//* *//* 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_ZERO( cbox, 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_Render_Mode 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 = (FT_UInt)( ( cbox.xMax - cbox.xMin ) >> 6 ); height = (FT_UInt)( ( 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_GRAY; bitmap->num_grays = 256; } else { 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_GRAY ) params.flags |= FT_RASTER_FLAG_AA; /* render outline into the bitmap */ error = render->raster_render( render->raster, ¶ms ); FT_Outline_Translate( outline, cbox.xMin, cbox.yMin ); if ( error ) goto Exit; slot->format = FT_GLYPH_FORMAT_BITMAP; slot->bitmap_left = (FT_Int)( cbox.xMin >> 6 ); slot->bitmap_top = (FT_Int)( 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, (FT_Renderer_RenderFunc) ft_raster1_render, (FT_Renderer_TransformFunc)ft_raster1_transform, (FT_Renderer_GetCBoxFunc) ft_raster1_get_cbox, (FT_Renderer_SetModeFunc) 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, (FT_Renderer_RenderFunc) ft_raster1_render, (FT_Renderer_TransformFunc)ft_raster1_transform, (FT_Renderer_GetCBoxFunc) ft_raster1_get_cbox, (FT_Renderer_SetModeFunc) ft_raster1_set_mode, (FT_Raster_Funcs*) &ft_standard_raster }; /* END */
/***************************************************************************/
/* */
/* 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_ZERO( cbox, 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_Render_Mode 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 = (FT_UInt)( ( cbox.xMax - cbox.xMin ) >> 6 );
height = (FT_UInt)( ( 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_GRAY;
bitmap->num_grays = 256;
}
else
{
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_GRAY )
params.flags |= FT_RASTER_FLAG_AA;
/* render outline into the bitmap */
error = render->raster_render( render->raster, ¶ms );
FT_Outline_Translate( outline, cbox.xMin, cbox.yMin );
if ( error )
goto Exit;
slot->format = FT_GLYPH_FORMAT_BITMAP;
slot->bitmap_left = (FT_Int)( cbox.xMin >> 6 );
slot->bitmap_top = (FT_Int)( 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,
(FT_Renderer_RenderFunc) ft_raster1_render,
(FT_Renderer_TransformFunc)ft_raster1_transform,
(FT_Renderer_GetCBoxFunc) ft_raster1_get_cbox,
(FT_Renderer_SetModeFunc) 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,
(FT_Renderer_RenderFunc) ft_raster1_render,
(FT_Renderer_TransformFunc)ft_raster1_transform,
(FT_Renderer_GetCBoxFunc) ft_raster1_get_cbox,
(FT_Renderer_SetModeFunc) ft_raster1_set_mode,
(FT_Raster_Funcs*) &ft_standard_raster
};
/* END */