+++ /dev/null
-/***************************************************************************/
-/* */
-/* ftcimage.c */
-/* */
-/* FreeType Image cache (body). */
-/* */
-/* Copyright 2000-2001 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_CACHE_H
-#include FT_CACHE_IMAGE_H
-#include FT_INTERNAL_MEMORY_H
-
-#include "ftcerror.h"
-
-#include <string.h> /* memcmp() */
-#include <stdlib.h> /* labs() */
-
-
- /* the FT_Glyph image `glyph node' type */
- typedef struct FTC_GlyphImageRec_
- {
- FTC_GlyphNodeRec root;
- FT_Glyph ft_glyph;
-
- } FTC_GlyphImageRec, *FTC_GlyphImage;
-
-
- /* the glyph image queue type */
- typedef struct FTC_ImageSetRec_
- {
- FTC_GlyphSetRec root;
- FTC_Image_Desc description;
-
- } FTC_ImageSetRec, *FTC_ImageSet;
-
-
- typedef struct FTC_Image_CacheRec_
- {
- FTC_Glyph_CacheRec root;
-
- } FTC_Image_CacheRec;
-
-
-
- /*************************************************************************/
- /*************************************************************************/
- /***** *****/
- /***** GLYPH IMAGE NODES *****/
- /***** *****/
- /*************************************************************************/
- /*************************************************************************/
-
-
- FT_CALLBACK_DEF( void )
- ftc_glyph_image_node_destroy( FTC_GlyphImage node,
- FTC_GlyphSet gset )
- {
- FT_Memory memory = gset->memory;
-
-
- FT_Done_Glyph( node->ft_glyph );
- FREE( node );
- }
-
-
- FT_CALLBACK_DEF( FT_Error )
- ftc_glyph_image_node_new( FTC_GlyphSet gset,
- FT_UInt glyph_index,
- FTC_GlyphImage *anode )
- {
- FT_Memory memory = gset->memory;
- FTC_ImageSet imageset = (FTC_ImageSet)gset;
- FT_Error error;
- FTC_GlyphImage node = 0;
- FT_Face face;
- FT_Size size;
-
-
- /* allocate node */
- if ( ALLOC( node, sizeof ( *node ) ) )
- goto Exit;
-
- /* initialize its inner fields */
- FTC_GlyphNode_Init( FTC_GLYPHNODE( node ), gset, glyph_index );
-
- /* we will now load the glyph image */
- error = FTC_Manager_Lookup_Size( gset->manager,
- &imageset->description.font,
- &face, &size );
- if ( !error )
- {
- FT_UInt gindex = node->root.glyph_index;
- FT_UInt load_flags = FT_LOAD_DEFAULT;
- FT_UInt image_type = imageset->description.image_type;
-
-
- if ( FTC_IMAGE_FORMAT( image_type ) == ftc_image_format_bitmap )
- {
- load_flags |= FT_LOAD_RENDER;
- if ( image_type & ftc_image_flag_monochrome )
- load_flags |= FT_LOAD_MONOCHROME;
-
- /* disable embedded bitmaps loading if necessary */
- if ( image_type & ftc_image_flag_no_sbits )
- load_flags |= FT_LOAD_NO_BITMAP;
- }
- else if ( FTC_IMAGE_FORMAT( image_type ) == ftc_image_format_outline )
- {
- /* disable embedded bitmaps loading */
- load_flags |= FT_LOAD_NO_BITMAP;
-
- if ( image_type & ftc_image_flag_unscaled )
- load_flags |= FT_LOAD_NO_SCALE;
- }
-
- if ( image_type & ftc_image_flag_unhinted )
- load_flags |= FT_LOAD_NO_HINTING;
-
- if ( image_type & ftc_image_flag_autohinted )
- load_flags |= FT_LOAD_FORCE_AUTOHINT;
-
- error = FT_Load_Glyph( face, gindex, load_flags );
- if ( !error )
- {
- if ( face->glyph->format == ft_glyph_format_bitmap ||
- face->glyph->format == ft_glyph_format_outline )
- {
- /* ok, copy it */
- FT_Glyph glyph;
-
-
- error = FT_Get_Glyph( face->glyph, &glyph );
- if ( !error )
- node->ft_glyph = glyph;
- }
- else
- error = FTC_Err_Invalid_Argument;
- }
- }
-
- Exit:
- if ( error && node )
- FREE( node );
-
- *anode = node;
- return error;
- }
-
-
- /* this function is important because it is both part of */
- /* an FTC_GlyphSet_Class and an FTC_CacheNode_Class */
- /* */
- FT_CALLBACK_DEF( FT_ULong )
- ftc_glyph_image_node_size( FTC_GlyphImage node )
- {
- FT_ULong size = 0;
- FT_Glyph glyph = node->ft_glyph;
-
-
- switch ( glyph->format )
- {
- case ft_glyph_format_bitmap:
- {
- FT_BitmapGlyph bitg;
-
-
- bitg = (FT_BitmapGlyph)glyph;
- size = bitg->bitmap.rows * labs( bitg->bitmap.pitch ) +
- sizeof ( *bitg );
- }
- break;
-
- case ft_glyph_format_outline:
- {
- FT_OutlineGlyph outg;
-
-
- outg = (FT_OutlineGlyph)glyph;
- size = outg->outline.n_points *
- ( sizeof( FT_Vector ) + sizeof ( FT_Byte ) ) +
- outg->outline.n_contours * sizeof ( FT_Short ) +
- sizeof ( *outg );
- }
- break;
-
- default:
- ;
- }
-
- size += sizeof ( *node );
- return size;
- }
-
-
- /*************************************************************************/
- /*************************************************************************/
- /***** *****/
- /***** GLYPH IMAGE SETS *****/
- /***** *****/
- /*************************************************************************/
- /*************************************************************************/
-
-
- FT_CALLBACK_DEF( FT_Error )
- ftc_image_set_init( FTC_ImageSet iset,
- FTC_Image_Desc* type )
- {
- iset->description = *type;
- return 0;
- }
-
-
- FT_CALLBACK_DEF( FT_Bool )
- ftc_image_set_compare( FTC_ImageSet iset,
- FTC_Image_Desc* type )
- {
- return FT_BOOL( !memcmp( &iset->description, type, sizeof ( *type ) ) );
- }
-
-
- FT_CALLBACK_TABLE_DEF
- const FTC_GlyphSet_Class ftc_glyph_image_set_class =
- {
- sizeof( FTC_ImageSetRec ),
-
- (FTC_GlyphSet_InitFunc) ftc_image_set_init,
- (FTC_GlyphSet_DoneFunc) 0,
- (FTC_GlyphSet_CompareFunc) ftc_image_set_compare,
-
- (FTC_GlyphSet_NewNodeFunc) ftc_glyph_image_node_new,
- (FTC_GlyphSet_SizeNodeFunc) ftc_glyph_image_node_size,
- (FTC_GlyphSet_DestroyNodeFunc)ftc_glyph_image_node_destroy
- };
-
-
- /*************************************************************************/
- /*************************************************************************/
- /***** *****/
- /***** GLYPH IMAGE CACHE *****/
- /***** *****/
- /*************************************************************************/
- /*************************************************************************/
-
-
- FT_CALLBACK_TABLE_DEF
- const FTC_Glyph_Cache_Class ftc_glyph_image_cache_class =
- {
- {
- sizeof( FTC_Image_CacheRec ),
- (FTC_Cache_InitFunc) FTC_Glyph_Cache_Init,
- (FTC_Cache_DoneFunc) FTC_Glyph_Cache_Done
- },
- (FTC_GlyphSet_Class*) &ftc_glyph_image_set_class
- };
-
-
- /* documentation is in ftcimage.h */
-
- FT_EXPORT_DEF( FT_Error )
- FTC_Image_Cache_New( FTC_Manager manager,
- FTC_Image_Cache *acache )
- {
- return FTC_Manager_Register_Cache(
- manager,
- (FTC_Cache_Class*)&ftc_glyph_image_cache_class,
- (FTC_Cache*)acache );
- }
-
-
- /* documentation is in ftcimage.h */
-
- FT_EXPORT_DEF( FT_Error )
- FTC_Image_Cache_Lookup( FTC_Image_Cache cache,
- FTC_Image_Desc* desc,
- FT_UInt gindex,
- FT_Glyph *aglyph )
- {
- FT_Error error;
- FTC_GlyphNode node;
-
-
- /* some argument checks are delayed to FTC_Glyph_Cache_Lookup */
-
- if ( !aglyph )
- return FTC_Err_Invalid_Argument;
-
- error = FTC_Glyph_Cache_Lookup( (FTC_Glyph_Cache)cache,
- desc, gindex, &node );
-
- if ( !error )
- *aglyph = ((FTC_GlyphImage)node)->ft_glyph;
-
- return error;
- }
-
-
-/* END */
projects / rrdtool.git / blobdiff