2000-10-12 07:05:40 +02:00
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/***************************************************************************/
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/* */
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/* ftcimage.c */
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/* */
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/* FreeType Image cache (body). */
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/* */
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/* Copyright 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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2000-12-08 17:17:16 +01:00
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#include <ft2build.h>
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#include FT_CACHE_H
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#include FT_CACHE_IMAGE_H
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#include FT_INTERNAL_MEMORY_H
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2000-09-19 03:11:11 +02:00
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2000-10-31 23:13:54 +01:00
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#include <string.h> /* memcmp() */
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2000-11-02 09:20:15 +01:00
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#include <stdlib.h> /* labs() */
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2000-10-12 07:05:40 +02:00
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2000-10-29 01:34:45 +02:00
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2000-10-31 23:13:54 +01:00
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/* the FT_Glyph image `glyph node' type */
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2000-10-29 01:34:45 +02:00
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typedef struct FTC_GlyphImageRec_
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{
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2000-10-31 23:13:54 +01:00
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FTC_GlyphNodeRec root;
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FT_Glyph ft_glyph;
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2000-10-29 01:34:45 +02:00
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} FTC_GlyphImageRec, *FTC_GlyphImage;
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/* the glyph image queue type */
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typedef struct FTC_ImageSetRec_
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{
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FTC_GlyphSetRec root;
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FTC_Image_Desc description;
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2000-10-31 21:42:18 +01:00
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2000-10-29 01:34:45 +02:00
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} FTC_ImageSetRec, *FTC_ImageSet;
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typedef struct FTC_Image_CacheRec_
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{
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FTC_Glyph_CacheRec root;
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2000-10-31 21:42:18 +01:00
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2000-10-29 01:34:45 +02:00
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} FTC_Image_CacheRec;
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2000-10-26 12:04:16 +02:00
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2000-10-12 07:05:40 +02:00
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/*************************************************************************/
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/*************************************************************************/
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/***** *****/
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/***** GLYPH IMAGE NODES *****/
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/***** *****/
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/*************************************************************************/
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/*************************************************************************/
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2000-11-04 02:55:49 +01:00
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FT_CALLBACK_DEF
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2000-10-28 15:17:11 +02:00
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void ftc_glyph_image_node_destroy( FTC_GlyphImage node,
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FTC_GlyphSet gset )
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2000-08-23 13:22:30 +02:00
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{
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2000-10-28 15:17:11 +02:00
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FT_Memory memory = gset->memory;
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2000-10-12 07:05:40 +02:00
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2000-10-28 09:26:59 +02:00
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FT_Done_Glyph( node->ft_glyph );
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2000-09-19 03:11:11 +02:00
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FREE( node );
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2000-08-23 13:22:30 +02:00
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}
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2000-08-23 19:32:42 +02:00
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2000-11-04 02:55:49 +01:00
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FT_CALLBACK_DEF
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2000-10-31 23:13:54 +01:00
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FT_Error ftc_glyph_image_node_new( FTC_GlyphSet gset,
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FT_UInt glyph_index,
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2000-11-10 23:43:37 +01:00
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FTC_GlyphImage *anode )
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2000-10-12 07:05:40 +02:00
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{
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2000-10-31 23:13:54 +01:00
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FT_Memory memory = gset->memory;
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FTC_ImageSet imageset = (FTC_ImageSet)gset;
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FT_Error error;
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FTC_GlyphImage node = 0;
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FT_Face face;
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FT_Size size;
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2000-08-23 13:22:30 +02:00
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2000-10-12 07:05:40 +02:00
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2000-09-19 03:11:11 +02:00
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/* allocate node */
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2000-10-12 07:05:40 +02:00
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if ( ALLOC( node, sizeof ( *node ) ) )
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2000-09-19 03:11:11 +02:00
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goto Exit;
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2000-10-31 23:13:54 +01:00
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/* initialize its inner fields */
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FTC_GlyphNode_Init( FTC_GLYPHNODE( node ), gset, glyph_index );
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2000-08-29 18:50:01 +02:00
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2000-09-19 03:11:11 +02:00
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/* we will now load the glyph image */
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2000-10-28 15:17:11 +02:00
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error = FTC_Manager_Lookup_Size( gset->manager,
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&imageset->description.font,
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2000-08-23 13:22:30 +02:00
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&face, &size );
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2000-08-23 19:32:42 +02:00
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if ( !error )
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2000-08-23 13:22:30 +02:00
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{
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2000-11-02 16:14:38 +01:00
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FT_UInt gindex = node->root.glyph_index;
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2000-08-29 18:04:28 +02:00
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FT_UInt load_flags = FT_LOAD_DEFAULT;
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2000-10-28 15:17:11 +02:00
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FT_UInt image_type = imageset->description.image_type;
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2000-10-12 07:05:40 +02:00
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2000-08-29 18:50:01 +02:00
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if ( FTC_IMAGE_FORMAT( image_type ) == ftc_image_format_bitmap )
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2000-10-12 07:05:40 +02:00
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{
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load_flags |= FT_LOAD_RENDER;
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2000-08-29 18:04:28 +02:00
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if ( image_type & ftc_image_flag_monochrome )
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load_flags |= FT_LOAD_MONOCHROME;
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2000-10-12 07:05:40 +02:00
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2000-08-29 18:04:28 +02:00
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/* disable embedded bitmaps loading if necessary */
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2000-09-22 08:52:20 +02:00
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if ( image_type & ftc_image_flag_no_sbits )
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2000-08-29 18:04:28 +02:00
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load_flags |= FT_LOAD_NO_BITMAP;
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2000-08-23 13:22:30 +02:00
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}
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2000-08-29 18:50:01 +02:00
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else if ( FTC_IMAGE_FORMAT( image_type ) == ftc_image_format_outline )
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2000-08-23 13:22:30 +02:00
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{
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2000-08-29 18:04:28 +02:00
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/* disable embedded bitmaps loading */
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load_flags |= FT_LOAD_NO_BITMAP;
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2000-10-12 07:05:40 +02:00
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2000-08-29 18:50:01 +02:00
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if ( image_type & ftc_image_flag_unscaled )
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2000-08-29 18:04:28 +02:00
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load_flags |= FT_LOAD_NO_SCALE;
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}
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2000-10-12 07:05:40 +02:00
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2000-08-29 18:50:01 +02:00
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if ( image_type & ftc_image_flag_unhinted )
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2000-08-29 18:04:28 +02:00
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load_flags |= FT_LOAD_NO_HINTING;
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2000-10-12 07:05:40 +02:00
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2000-08-29 18:50:01 +02:00
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if ( image_type & ftc_image_flag_autohinted )
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2000-08-29 18:04:28 +02:00
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load_flags |= FT_LOAD_FORCE_AUTOHINT;
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2000-08-23 23:11:13 +02:00
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2000-11-02 16:14:38 +01:00
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error = FT_Load_Glyph( face, gindex, load_flags );
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2000-08-23 23:11:13 +02:00
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if ( !error )
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{
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2000-08-29 18:04:28 +02:00
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if ( face->glyph->format == ft_glyph_format_bitmap ||
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face->glyph->format == ft_glyph_format_outline )
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2000-10-12 07:05:40 +02:00
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{
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2000-08-23 23:11:13 +02:00
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/* ok, copy it */
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FT_Glyph glyph;
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2000-10-12 07:05:40 +02:00
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2000-08-23 23:11:13 +02:00
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error = FT_Get_Glyph( face->glyph, &glyph );
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if ( !error )
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2000-10-28 09:26:59 +02:00
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node->ft_glyph = glyph;
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2000-08-23 23:11:13 +02:00
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}
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2000-08-29 18:04:28 +02:00
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else
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error = FT_Err_Invalid_Argument;
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2000-08-23 23:11:13 +02:00
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}
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}
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2000-10-12 07:05:40 +02:00
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2000-08-23 23:11:13 +02:00
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Exit:
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2000-10-12 07:05:40 +02:00
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if ( error && node )
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FREE( node );
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2000-08-23 23:11:13 +02:00
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2000-09-19 03:11:11 +02:00
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*anode = node;
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2000-08-23 23:11:13 +02:00
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return error;
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2000-09-19 03:11:11 +02:00
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}
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2000-08-23 23:11:13 +02:00
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2000-10-12 07:05:40 +02:00
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/* this function is important because it is both part of */
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2000-10-31 23:13:54 +01:00
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/* an FTC_GlyphSet_Class and an FTC_CacheNode_Class */
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2000-10-12 07:05:40 +02:00
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/* */
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2000-11-04 02:55:49 +01:00
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FT_CALLBACK_DEF
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2000-10-28 09:26:59 +02:00
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FT_ULong ftc_glyph_image_node_size( FTC_GlyphImage node )
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2000-08-23 23:11:13 +02:00
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{
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2000-10-12 07:05:40 +02:00
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FT_ULong size = 0;
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2000-10-28 09:26:59 +02:00
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FT_Glyph glyph = node->ft_glyph;
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2000-10-12 07:05:40 +02:00
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switch ( glyph->format )
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2000-08-23 23:11:13 +02:00
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{
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2000-10-12 07:05:40 +02:00
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case ft_glyph_format_bitmap:
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{
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FT_BitmapGlyph bitg;
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bitg = (FT_BitmapGlyph)glyph;
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size = bitg->bitmap.rows * labs( bitg->bitmap.pitch ) +
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sizeof ( *bitg );
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}
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break;
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case ft_glyph_format_outline:
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{
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FT_OutlineGlyph outg;
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outg = (FT_OutlineGlyph)glyph;
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size = outg->outline.n_points *
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( sizeof( FT_Vector ) + sizeof ( FT_Byte ) ) +
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outg->outline.n_contours * sizeof ( FT_Short ) +
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sizeof ( *outg );
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}
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break;
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default:
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;
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2000-08-23 23:11:13 +02:00
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}
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2000-10-12 07:05:40 +02:00
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size += sizeof ( *node );
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2000-09-19 03:11:11 +02:00
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return size;
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2000-08-23 23:11:13 +02:00
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}
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2000-08-24 18:29:15 +02:00
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2000-10-12 07:05:40 +02:00
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/*************************************************************************/
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/*************************************************************************/
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/***** *****/
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2000-10-29 01:34:45 +02:00
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/***** GLYPH IMAGE SETS *****/
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2000-10-12 07:05:40 +02:00
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/***** *****/
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/*************************************************************************/
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/*************************************************************************/
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2000-08-24 18:29:15 +02:00
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2000-08-23 23:11:13 +02:00
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2000-11-04 02:55:49 +01:00
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FT_CALLBACK_DEF
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2000-10-28 15:17:11 +02:00
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FT_Error ftc_image_set_init( FTC_ImageSet iset,
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FTC_Image_Desc* type )
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2000-08-23 23:11:13 +02:00
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{
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2000-10-28 15:17:11 +02:00
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iset->description = *type;
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2000-09-19 03:11:11 +02:00
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return 0;
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2000-08-23 23:11:13 +02:00
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}
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2000-11-04 02:55:49 +01:00
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FT_CALLBACK_DEF
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2000-10-28 15:17:11 +02:00
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FT_Bool ftc_image_set_compare( FTC_ImageSet iset,
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FTC_Image_Desc* type )
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2000-08-23 23:11:13 +02:00
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{
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2000-10-28 15:17:11 +02:00
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return !memcmp( &iset->description, type, sizeof ( *type ) );
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2000-08-23 23:11:13 +02:00
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}
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2000-10-12 07:05:40 +02:00
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2000-11-04 02:55:49 +01:00
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FT_CALLBACK_TABLE_DEF
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const FTC_GlyphSet_Class ftc_glyph_image_set_class =
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2000-08-23 23:11:13 +02:00
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{
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2000-10-28 15:17:11 +02:00
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sizeof( FTC_ImageSetRec ),
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2000-08-23 23:11:13 +02:00
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2000-10-28 15:17:11 +02:00
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(FTC_GlyphSet_InitFunc) ftc_image_set_init,
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(FTC_GlyphSet_DoneFunc) 0,
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(FTC_GlyphSet_CompareFunc) ftc_image_set_compare,
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2000-10-12 07:05:40 +02:00
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2000-10-28 15:17:11 +02:00
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(FTC_GlyphSet_NewNodeFunc) ftc_glyph_image_node_new,
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(FTC_GlyphSet_SizeNodeFunc) ftc_glyph_image_node_size,
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(FTC_GlyphSet_DestroyNodeFunc)ftc_glyph_image_node_destroy
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2000-10-12 07:05:40 +02:00
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};
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2000-08-23 23:11:13 +02:00
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2000-08-24 18:29:15 +02:00
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2000-10-12 07:05:40 +02:00
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/*************************************************************************/
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/*************************************************************************/
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/***** *****/
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/***** GLYPH IMAGE CACHE *****/
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/***** *****/
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/*************************************************************************/
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/*************************************************************************/
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2000-08-29 18:04:28 +02:00
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2000-08-23 23:11:13 +02:00
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2000-11-04 02:55:49 +01:00
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FT_CALLBACK_TABLE_DEF
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const FTC_Glyph_Cache_Class ftc_glyph_image_cache_class =
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2000-08-23 23:11:13 +02:00
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{
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2000-09-19 03:11:11 +02:00
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{
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2000-10-28 15:17:11 +02:00
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sizeof( FTC_Image_CacheRec ),
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(FTC_Cache_InitFunc) FTC_Glyph_Cache_Init,
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(FTC_Cache_DoneFunc) FTC_Glyph_Cache_Done
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2000-09-19 03:11:11 +02:00
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},
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2000-10-28 15:17:11 +02:00
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(FTC_GlyphSet_Class*) &ftc_glyph_image_set_class
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2000-09-19 03:11:11 +02:00
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};
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2000-08-23 23:11:13 +02:00
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2000-11-04 02:55:49 +01:00
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FT_EXPORT_DEF( FT_Error ) FTC_Image_Cache_New( FTC_Manager manager,
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2000-11-07 07:30:29 +01:00
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FTC_Image_Cache *acache )
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2000-08-23 23:11:13 +02:00
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{
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2000-09-19 03:11:11 +02:00
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return FTC_Manager_Register_Cache(
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2000-10-31 23:13:54 +01:00
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manager,
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(FTC_Cache_Class*)&ftc_glyph_image_cache_class,
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(FTC_Cache*)acache );
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2000-08-23 23:11:13 +02:00
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}
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2000-10-12 07:05:40 +02:00
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2000-08-23 23:11:13 +02:00
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2000-11-29 18:48:57 +01:00
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FT_EXPORT_DEF( FT_Error ) FTC_Image_Cache_Lookup( FTC_Image_Cache cache,
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FTC_Image_Desc* desc,
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FT_UInt gindex,
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FT_Glyph *aglyph )
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2000-08-23 23:11:13 +02:00
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{
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2000-10-28 15:17:11 +02:00
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FT_Error error;
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FTC_GlyphNode node;
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2000-08-23 23:11:13 +02:00
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2000-11-06 20:29:06 +01:00
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/* some argument checks are delayed to FTC_Glyph_Cache_Lookup */
|
2000-08-24 18:29:15 +02:00
|
|
|
|
2000-11-06 20:29:06 +01:00
|
|
|
if (!aglyph)
|
2000-08-24 18:29:15 +02:00
|
|
|
return FT_Err_Invalid_Argument;
|
|
|
|
|
2000-11-06 20:29:06 +01:00
|
|
|
error = FTC_Glyph_Cache_Lookup( (FTC_Glyph_Cache)cache,
|
|
|
|
desc, gindex, &node );
|
|
|
|
|
|
|
|
if (!error)
|
|
|
|
*aglyph = ((FTC_GlyphImage)node)->ft_glyph;
|
2000-08-23 23:11:13 +02:00
|
|
|
|
|
|
|
return error;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2000-10-12 07:05:40 +02:00
|
|
|
/* END */
|