--- a/misc/libfreetype/src/truetype/ttdriver.c Thu Jul 25 23:16:06 2013 +0200
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,484 +0,0 @@
-/***************************************************************************/
-/* */
-/* ttdriver.c */
-/* */
-/* TrueType font driver implementation (body). */
-/* */
-/* Copyright 1996-2011 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_DEBUG_H
-#include FT_INTERNAL_STREAM_H
-#include FT_INTERNAL_SFNT_H
-#include FT_SERVICE_XFREE86_NAME_H
-
-#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
-#include FT_MULTIPLE_MASTERS_H
-#include FT_SERVICE_MULTIPLE_MASTERS_H
-#endif
-
-#include FT_SERVICE_TRUETYPE_ENGINE_H
-#include FT_SERVICE_TRUETYPE_GLYF_H
-
-#include "ttdriver.h"
-#include "ttgload.h"
-#include "ttpload.h"
-
-#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
-#include "ttgxvar.h"
-#endif
-
-#include "tterrors.h"
-
-#include "ttpic.h"
-
- /*************************************************************************/
- /* */
- /* The macro FT_COMPONENT is used in trace mode. It is an implicit */
- /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */
- /* messages during execution. */
- /* */
-#undef FT_COMPONENT
-#define FT_COMPONENT trace_ttdriver
-
-
- /*************************************************************************/
- /*************************************************************************/
- /*************************************************************************/
- /**** ****/
- /**** ****/
- /**** F A C E S ****/
- /**** ****/
- /**** ****/
- /*************************************************************************/
- /*************************************************************************/
- /*************************************************************************/
-
-
-#undef PAIR_TAG
-#define PAIR_TAG( left, right ) ( ( (FT_ULong)left << 16 ) | \
- (FT_ULong)right )
-
-
- /*************************************************************************/
- /* */
- /* <Function> */
- /* tt_get_kerning */
- /* */
- /* <Description> */
- /* A driver method used to return the kerning vector between two */
- /* glyphs of the same face. */
- /* */
- /* <Input> */
- /* face :: A handle to the source face object. */
- /* */
- /* left_glyph :: The index of the left glyph in the kern pair. */
- /* */
- /* right_glyph :: The index of the right glyph in the kern pair. */
- /* */
- /* <Output> */
- /* kerning :: The kerning vector. This is in font units for */
- /* scalable formats, and in pixels for fixed-sizes */
- /* formats. */
- /* */
- /* <Return> */
- /* FreeType error code. 0 means success. */
- /* */
- /* <Note> */
- /* Only horizontal layouts (left-to-right & right-to-left) are */
- /* supported by this function. Other layouts, or more sophisticated */
- /* kernings, are out of scope of this method (the basic driver */
- /* interface is meant to be simple). */
- /* */
- /* They can be implemented by format-specific interfaces. */
- /* */
- static FT_Error
- tt_get_kerning( FT_Face ttface, /* TT_Face */
- FT_UInt left_glyph,
- FT_UInt right_glyph,
- FT_Vector* kerning )
- {
- TT_Face face = (TT_Face)ttface;
- SFNT_Service sfnt = (SFNT_Service)face->sfnt;
-
-
- kerning->x = 0;
- kerning->y = 0;
-
- if ( sfnt )
- kerning->x = sfnt->get_kerning( face, left_glyph, right_glyph );
-
- return 0;
- }
-
-
-#undef PAIR_TAG
-
-
- static FT_Error
- tt_get_advances( FT_Face ttface,
- FT_UInt start,
- FT_UInt count,
- FT_Int32 flags,
- FT_Fixed *advances )
- {
- FT_UInt nn;
- TT_Face face = (TT_Face) ttface;
-
-
- /* XXX: TODO: check for sbits */
-
- if ( flags & FT_LOAD_VERTICAL_LAYOUT )
- {
- for ( nn = 0; nn < count; nn++ )
- {
- FT_Short tsb;
- FT_UShort ah;
-
-
- TT_Get_VMetrics( face, start + nn, &tsb, &ah );
- advances[nn] = ah;
- }
- }
- else
- {
- for ( nn = 0; nn < count; nn++ )
- {
- FT_Short lsb;
- FT_UShort aw;
-
-
- TT_Get_HMetrics( face, start + nn, &lsb, &aw );
- advances[nn] = aw;
- }
- }
-
- return TT_Err_Ok;
- }
-
- /*************************************************************************/
- /*************************************************************************/
- /*************************************************************************/
- /**** ****/
- /**** ****/
- /**** S I Z E S ****/
- /**** ****/
- /**** ****/
- /*************************************************************************/
- /*************************************************************************/
- /*************************************************************************/
-
-
-#ifdef TT_CONFIG_OPTION_EMBEDDED_BITMAPS
-
- static FT_Error
- tt_size_select( FT_Size size,
- FT_ULong strike_index )
- {
- TT_Face ttface = (TT_Face)size->face;
- TT_Size ttsize = (TT_Size)size;
- FT_Error error = TT_Err_Ok;
-
-
- ttsize->strike_index = strike_index;
-
- if ( FT_IS_SCALABLE( size->face ) )
- {
- /* use the scaled metrics, even when tt_size_reset fails */
- FT_Select_Metrics( size->face, strike_index );
-
- tt_size_reset( ttsize );
- }
- else
- {
- SFNT_Service sfnt = (SFNT_Service) ttface->sfnt;
- FT_Size_Metrics* metrics = &size->metrics;
-
-
- error = sfnt->load_strike_metrics( ttface, strike_index, metrics );
- if ( error )
- ttsize->strike_index = 0xFFFFFFFFUL;
- }
-
- return error;
- }
-
-#endif /* TT_CONFIG_OPTION_EMBEDDED_BITMAPS */
-
-
- static FT_Error
- tt_size_request( FT_Size size,
- FT_Size_Request req )
- {
- TT_Size ttsize = (TT_Size)size;
- FT_Error error = TT_Err_Ok;
-
-
-#ifdef TT_CONFIG_OPTION_EMBEDDED_BITMAPS
-
- if ( FT_HAS_FIXED_SIZES( size->face ) )
- {
- TT_Face ttface = (TT_Face)size->face;
- SFNT_Service sfnt = (SFNT_Service) ttface->sfnt;
- FT_ULong strike_index;
-
-
- error = sfnt->set_sbit_strike( ttface, req, &strike_index );
-
- if ( error )
- ttsize->strike_index = 0xFFFFFFFFUL;
- else
- return tt_size_select( size, strike_index );
- }
-
-#endif /* TT_CONFIG_OPTION_EMBEDDED_BITMAPS */
-
- FT_Request_Metrics( size->face, req );
-
- if ( FT_IS_SCALABLE( size->face ) )
- error = tt_size_reset( ttsize );
-
- return error;
- }
-
-
- /*************************************************************************/
- /* */
- /* <Function> */
- /* Load_Glyph */
- /* */
- /* <Description> */
- /* A driver method used to load a glyph within a given glyph slot. */
- /* */
- /* <Input> */
- /* slot :: A handle to the target slot object where the glyph */
- /* will be loaded. */
- /* */
- /* size :: A handle to the source face size at which the glyph */
- /* must be scaled, loaded, etc. */
- /* */
- /* glyph_index :: The index of the glyph in the font file. */
- /* */
- /* load_flags :: A flag indicating what to load for this glyph. The */
- /* FT_LOAD_XXX constants can be used to control the */
- /* glyph loading process (e.g., whether the outline */
- /* should be scaled, whether to load bitmaps or not, */
- /* whether to hint the outline, etc). */
- /* */
- /* <Return> */
- /* FreeType error code. 0 means success. */
- /* */
- static FT_Error
- Load_Glyph( FT_GlyphSlot ttslot, /* TT_GlyphSlot */
- FT_Size ttsize, /* TT_Size */
- FT_UInt glyph_index,
- FT_Int32 load_flags )
- {
- TT_GlyphSlot slot = (TT_GlyphSlot)ttslot;
- TT_Size size = (TT_Size)ttsize;
- FT_Face face = ttslot->face;
- FT_Error error;
-
-
- if ( !slot )
- return TT_Err_Invalid_Slot_Handle;
-
- if ( !size )
- return TT_Err_Invalid_Size_Handle;
-
- if ( !face )
- return TT_Err_Invalid_Argument;
-
-#ifdef FT_CONFIG_OPTION_INCREMENTAL
- if ( glyph_index >= (FT_UInt)face->num_glyphs &&
- !face->internal->incremental_interface )
-#else
- if ( glyph_index >= (FT_UInt)face->num_glyphs )
-#endif
- return TT_Err_Invalid_Argument;
-
- if ( load_flags & FT_LOAD_NO_HINTING )
- {
- /* both FT_LOAD_NO_HINTING and FT_LOAD_NO_AUTOHINT */
- /* are necessary to disable hinting for tricky fonts */
-
- if ( FT_IS_TRICKY( face ) )
- load_flags &= ~FT_LOAD_NO_HINTING;
-
- if ( load_flags & FT_LOAD_NO_AUTOHINT )
- load_flags |= FT_LOAD_NO_HINTING;
- }
-
- if ( load_flags & ( FT_LOAD_NO_RECURSE | FT_LOAD_NO_SCALE ) )
- {
- load_flags |= FT_LOAD_NO_BITMAP | FT_LOAD_NO_SCALE;
-
- if ( !FT_IS_TRICKY( face ) )
- load_flags |= FT_LOAD_NO_HINTING;
- }
-
- /* now load the glyph outline if necessary */
- error = TT_Load_Glyph( size, slot, glyph_index, load_flags );
-
- /* force drop-out mode to 2 - irrelevant now */
- /* slot->outline.dropout_mode = 2; */
-
- return error;
- }
-
-
- /*************************************************************************/
- /*************************************************************************/
- /*************************************************************************/
- /**** ****/
- /**** ****/
- /**** D R I V E R I N T E R F A C E ****/
- /**** ****/
- /**** ****/
- /*************************************************************************/
- /*************************************************************************/
- /*************************************************************************/
-
-#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
- FT_DEFINE_SERVICE_MULTIMASTERSREC(tt_service_gx_multi_masters,
- (FT_Get_MM_Func) NULL,
- (FT_Set_MM_Design_Func) NULL,
- (FT_Set_MM_Blend_Func) TT_Set_MM_Blend,
- (FT_Get_MM_Var_Func) TT_Get_MM_Var,
- (FT_Set_Var_Design_Func)TT_Set_Var_Design
- )
-#endif
-
- static const FT_Service_TrueTypeEngineRec tt_service_truetype_engine =
- {
-#ifdef TT_USE_BYTECODE_INTERPRETER
-
-#ifdef TT_CONFIG_OPTION_UNPATENTED_HINTING
- FT_TRUETYPE_ENGINE_TYPE_UNPATENTED
-#else
- FT_TRUETYPE_ENGINE_TYPE_PATENTED
-#endif
-
-#else /* !TT_USE_BYTECODE_INTERPRETER */
-
- FT_TRUETYPE_ENGINE_TYPE_NONE
-
-#endif /* TT_USE_BYTECODE_INTERPRETER */
- };
-
- FT_DEFINE_SERVICE_TTGLYFREC(tt_service_truetype_glyf,
- (TT_Glyf_GetLocationFunc)tt_face_get_location
- )
-
-#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
- FT_DEFINE_SERVICEDESCREC4(tt_services,
- FT_SERVICE_ID_XF86_NAME, FT_XF86_FORMAT_TRUETYPE,
- FT_SERVICE_ID_MULTI_MASTERS, &FT_TT_SERVICE_GX_MULTI_MASTERS_GET,
- FT_SERVICE_ID_TRUETYPE_ENGINE, &tt_service_truetype_engine,
- FT_SERVICE_ID_TT_GLYF, &FT_TT_SERVICE_TRUETYPE_GLYF_GET
- )
-#else
- FT_DEFINE_SERVICEDESCREC3(tt_services,
- FT_SERVICE_ID_XF86_NAME, FT_XF86_FORMAT_TRUETYPE,
- FT_SERVICE_ID_TRUETYPE_ENGINE, &tt_service_truetype_engine,
- FT_SERVICE_ID_TT_GLYF, &FT_TT_SERVICE_TRUETYPE_GLYF_GET
- )
-#endif
-
- FT_CALLBACK_DEF( FT_Module_Interface )
- tt_get_interface( FT_Module driver, /* TT_Driver */
- const char* tt_interface )
- {
- FT_Module_Interface result;
- FT_Module sfntd;
- SFNT_Service sfnt;
-
- result = ft_service_list_lookup( FT_TT_SERVICES_GET, tt_interface );
- if ( result != NULL )
- return result;
-
- if ( !driver )
- return NULL;
-
- /* only return the default interface from the SFNT module */
- sfntd = FT_Get_Module( driver->library, "sfnt" );
- if ( sfntd )
- {
- sfnt = (SFNT_Service)( sfntd->clazz->module_interface );
- if ( sfnt )
- return sfnt->get_interface( driver, tt_interface );
- }
-
- return 0;
- }
-
-
- /* The FT_DriverInterface structure is defined in ftdriver.h. */
-
-#ifdef TT_USE_BYTECODE_INTERPRETER
-#define TT_HINTER_FLAG FT_MODULE_DRIVER_HAS_HINTER
-#else
-#define TT_HINTER_FLAG 0
-#endif
-
-#ifdef TT_CONFIG_OPTION_EMBEDDED_BITMAPS
-#define TT_SIZE_SELECT tt_size_select
-#else
-#define TT_SIZE_SELECT 0
-#endif
-
- FT_DEFINE_DRIVER(tt_driver_class,
-
-
- FT_MODULE_FONT_DRIVER |
- FT_MODULE_DRIVER_SCALABLE |
- TT_HINTER_FLAG,
-
- sizeof ( TT_DriverRec ),
-
- "truetype", /* driver name */
- 0x10000L, /* driver version == 1.0 */
- 0x20000L, /* driver requires FreeType 2.0 or above */
-
- (void*)0, /* driver specific interface */
-
- tt_driver_init,
- tt_driver_done,
- tt_get_interface,
-
- sizeof ( TT_FaceRec ),
- sizeof ( TT_SizeRec ),
- sizeof ( FT_GlyphSlotRec ),
-
- tt_face_init,
- tt_face_done,
- tt_size_init,
- tt_size_done,
- tt_slot_init,
- 0, /* FT_Slot_DoneFunc */
-
- ft_stub_set_char_sizes, /* FT_CONFIG_OPTION_OLD_INTERNALS */
- ft_stub_set_pixel_sizes, /* FT_CONFIG_OPTION_OLD_INTERNALS */
-
- Load_Glyph,
-
- tt_get_kerning,
- 0, /* FT_Face_AttachFunc */
- tt_get_advances,
-
- tt_size_request,
- TT_SIZE_SELECT
- )
-
-
-/* END */