diff options
Diffstat (limited to 'third_party/freetype/src/truetype/ttdriver.c')
| -rw-r--r-- | third_party/freetype/src/truetype/ttdriver.c | 657 |
1 files changed, 0 insertions, 657 deletions
diff --git a/third_party/freetype/src/truetype/ttdriver.c b/third_party/freetype/src/truetype/ttdriver.c deleted file mode 100644 index 19f7858b3e..0000000000 --- a/third_party/freetype/src/truetype/ttdriver.c +++ /dev/null @@ -1,657 +0,0 @@ -/***************************************************************************/ -/* */ -/* ttdriver.c */ -/* */ -/* TrueType font driver implementation (body). */ -/* */ -/* Copyright 1996-2017 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_FONT_FORMAT_H - -#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT -#include FT_MULTIPLE_MASTERS_H -#include FT_SERVICE_MULTIPLE_MASTERS_H -#include FT_SERVICE_METRICS_VARIATIONS_H -#endif - -#include FT_SERVICE_TRUETYPE_ENGINE_H -#include FT_SERVICE_TRUETYPE_GLYF_H -#include FT_SERVICE_PROPERTIES_H -#include FT_TRUETYPE_DRIVER_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 - - - /* - * PROPERTY SERVICE - * - */ - static FT_Error - tt_property_set( FT_Module module, /* TT_Driver */ - const char* property_name, - const void* value, - FT_Bool value_is_string ) - { - FT_Error error = FT_Err_Ok; - TT_Driver driver = (TT_Driver)module; - -#ifndef FT_CONFIG_OPTION_ENVIRONMENT_PROPERTIES - FT_UNUSED( value_is_string ); -#endif - - - if ( !ft_strcmp( property_name, "interpreter-version" ) ) - { - FT_UInt interpreter_version; - - -#ifdef FT_CONFIG_OPTION_ENVIRONMENT_PROPERTIES - if ( value_is_string ) - { - const char* s = (const char*)value; - - - interpreter_version = (FT_UInt)ft_strtol( s, NULL, 10 ); - } - else -#endif - { - FT_UInt* iv = (FT_UInt*)value; - - - interpreter_version = *iv; - } - - if ( interpreter_version == TT_INTERPRETER_VERSION_35 -#ifdef TT_SUPPORT_SUBPIXEL_HINTING_INFINALITY - || interpreter_version == TT_INTERPRETER_VERSION_38 -#endif -#ifdef TT_SUPPORT_SUBPIXEL_HINTING_MINIMAL - || interpreter_version == TT_INTERPRETER_VERSION_40 -#endif - ) - driver->interpreter_version = interpreter_version; - else - error = FT_ERR( Unimplemented_Feature ); - - return error; - } - - FT_TRACE0(( "tt_property_set: missing property `%s'\n", - property_name )); - return FT_THROW( Missing_Property ); - } - - - static FT_Error - tt_property_get( FT_Module module, /* TT_Driver */ - const char* property_name, - const void* value ) - { - FT_Error error = FT_Err_Ok; - TT_Driver driver = (TT_Driver)module; - - FT_UInt interpreter_version = driver->interpreter_version; - - - if ( !ft_strcmp( property_name, "interpreter-version" ) ) - { - FT_UInt* val = (FT_UInt*)value; - - - *val = interpreter_version; - - return error; - } - - FT_TRACE0(( "tt_property_get: missing property `%s'\n", - property_name )); - return FT_THROW( Missing_Property ); - } - - - FT_DEFINE_SERVICE_PROPERTIESREC( - tt_service_properties, - - (FT_Properties_SetFunc)tt_property_set, /* set_property */ - (FT_Properties_GetFunc)tt_property_get /* get_property */ - ) - - - /*************************************************************************/ - /*************************************************************************/ - /*************************************************************************/ - /**** ****/ - /**** ****/ - /**** F A C E S ****/ - /**** ****/ - /**** ****/ - /*************************************************************************/ - /*************************************************************************/ - /*************************************************************************/ - - - /*************************************************************************/ - /* */ - /* <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; - } - - - 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 ) - { -#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT - /* no fast retrieval for blended MM fonts without VVAR table */ - if ( !face->is_default_instance && - !( face->variation_support & TT_FACE_FLAG_VAR_VADVANCE ) ) - return FT_THROW( Unimplemented_Feature ); -#endif - - for ( nn = 0; nn < count; nn++ ) - { - FT_Short tsb; - FT_UShort ah; - - - /* since we don't need `tsb', we use zero for `yMax' parameter */ - TT_Get_VMetrics( face, start + nn, 0, &tsb, &ah ); - advances[nn] = ah; - } - } - else - { -#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT - /* no fast retrieval for blended MM fonts without HVAR table */ - if ( !face->is_default_instance && - !( face->variation_support & TT_FACE_FLAG_VAR_HADVANCE ) ) - return FT_THROW( Unimplemented_Feature ); -#endif - - for ( nn = 0; nn < count; nn++ ) - { - FT_Short lsb; - FT_UShort aw; - - - TT_Get_HMetrics( face, start + nn, &lsb, &aw ); - advances[nn] = aw; - } - } - - return FT_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 = FT_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, 0 ); /* ignore return value */ - } - 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 = FT_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, 0 ); - ttsize->root.metrics = ttsize->metrics; - -#ifdef TT_USE_BYTECODE_INTERPRETER - /* for the `MPS' bytecode instruction we need the point size */ - { - FT_UInt resolution = ttsize->metrics.x_ppem > ttsize->metrics.y_ppem - ? req->horiResolution - : req->vertResolution; - - - /* if we don't have a resolution value, assume 72dpi */ - if ( req->type == FT_SIZE_REQUEST_TYPE_SCALES || - !resolution ) - resolution = 72; - - ttsize->point_size = FT_MulDiv( ttsize->ttmetrics.ppem, - 64 * 72, - resolution ); - } -#endif - } - - return error; - } - - - /*************************************************************************/ - /* */ - /* <Function> */ - /* tt_glyph_load */ - /* */ - /* <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 - tt_glyph_load( 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 FT_THROW( Invalid_Slot_Handle ); - - if ( !size ) - return FT_THROW( Invalid_Size_Handle ); - - if ( !face ) - return FT_THROW( Invalid_Face_Handle ); - -#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 FT_THROW( 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, /* get_mm */ - (FT_Set_MM_Design_Func) NULL, /* set_mm_design */ - (FT_Set_MM_Blend_Func) TT_Set_MM_Blend, /* set_mm_blend */ - (FT_Get_MM_Blend_Func) TT_Get_MM_Blend, /* get_mm_blend */ - (FT_Get_MM_Var_Func) TT_Get_MM_Var, /* get_mm_var */ - (FT_Set_Var_Design_Func)TT_Set_Var_Design, /* set_var_design */ - (FT_Get_Var_Design_Func)TT_Get_Var_Design, /* get_var_design */ - - (FT_Get_Var_Blend_Func) tt_get_var_blend, /* get_var_blend */ - (FT_Done_Blend_Func) tt_done_blend /* done_blend */ - ) - - FT_DEFINE_SERVICE_METRICSVARIATIONSREC( - tt_service_metrics_variations, - - (FT_HAdvance_Adjust_Func)tt_hadvance_adjust, /* hadvance_adjust */ - (FT_LSB_Adjust_Func) NULL, /* lsb_adjust */ - (FT_RSB_Adjust_Func) NULL, /* rsb_adjust */ - - (FT_VAdvance_Adjust_Func)NULL, /* vadvance_adjust */ - (FT_TSB_Adjust_Func) NULL, /* tsb_adjust */ - (FT_BSB_Adjust_Func) NULL, /* bsb_adjust */ - (FT_VOrg_Adjust_Func) NULL, /* vorg_adjust */ - - (FT_Metrics_Adjust_Func) tt_apply_mvar /* metrics_adjust */ - ) - -#endif /* TT_CONFIG_OPTION_GX_VAR_SUPPORT */ - - - static const FT_Service_TrueTypeEngineRec tt_service_truetype_engine = - { -#ifdef TT_USE_BYTECODE_INTERPRETER - - FT_TRUETYPE_ENGINE_TYPE_PATENTED - -#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 /* get_location */ - ) - - -#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT - FT_DEFINE_SERVICEDESCREC6( - tt_services, - - FT_SERVICE_ID_FONT_FORMAT, FT_FONT_FORMAT_TRUETYPE, - FT_SERVICE_ID_MULTI_MASTERS, &TT_SERVICE_GX_MULTI_MASTERS_GET, - FT_SERVICE_ID_METRICS_VARIATIONS, &TT_SERVICE_METRICS_VARIATIONS_GET, - FT_SERVICE_ID_TRUETYPE_ENGINE, &tt_service_truetype_engine, - FT_SERVICE_ID_TT_GLYF, &TT_SERVICE_TRUETYPE_GLYF_GET, - FT_SERVICE_ID_PROPERTIES, &TT_SERVICE_PROPERTIES_GET ) -#else - FT_DEFINE_SERVICEDESCREC4( - tt_services, - - FT_SERVICE_ID_FONT_FORMAT, FT_FONT_FORMAT_TRUETYPE, - FT_SERVICE_ID_TRUETYPE_ENGINE, &tt_service_truetype_engine, - FT_SERVICE_ID_TT_GLYF, &TT_SERVICE_TRUETYPE_GLYF_GET, - FT_SERVICE_ID_PROPERTIES, &TT_SERVICE_PROPERTIES_GET ) -#endif - - - FT_CALLBACK_DEF( FT_Module_Interface ) - tt_get_interface( FT_Module driver, /* TT_Driver */ - const char* tt_interface ) - { - FT_Library library; - FT_Module_Interface result; - FT_Module sfntd; - SFNT_Service sfnt; - - - /* TT_SERVICES_GET dereferences `library' in PIC mode */ -#ifdef FT_CONFIG_OPTION_PIC - if ( !driver ) - return NULL; - library = driver->library; - if ( !library ) - return NULL; -#endif - - result = ft_service_list_lookup( TT_SERVICES_GET, tt_interface ); - if ( result ) - return result; - -#ifndef FT_CONFIG_OPTION_PIC - if ( !driver ) - return NULL; - library = driver->library; - if ( !library ) - return NULL; -#endif - - /* only return the default interface from the SFNT module */ - sfntd = FT_Get_Module( 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 */ - - NULL, /* module-specific interface */ - - tt_driver_init, /* FT_Module_Constructor module_init */ - tt_driver_done, /* FT_Module_Destructor module_done */ - tt_get_interface, /* FT_Module_Requester get_interface */ - - sizeof ( TT_FaceRec ), - sizeof ( TT_SizeRec ), - sizeof ( FT_GlyphSlotRec ), - - tt_face_init, /* FT_Face_InitFunc init_face */ - tt_face_done, /* FT_Face_DoneFunc done_face */ - tt_size_init, /* FT_Size_InitFunc init_size */ - tt_size_done, /* FT_Size_DoneFunc done_size */ - tt_slot_init, /* FT_Slot_InitFunc init_slot */ - NULL, /* FT_Slot_DoneFunc done_slot */ - - tt_glyph_load, /* FT_Slot_LoadFunc load_glyph */ - - tt_get_kerning, /* FT_Face_GetKerningFunc get_kerning */ - NULL, /* FT_Face_AttachFunc attach_file */ - tt_get_advances, /* FT_Face_GetAdvancesFunc get_advances */ - - tt_size_request, /* FT_Size_RequestFunc request_size */ - TT_SIZE_SELECT /* FT_Size_SelectFunc select_size */ - ) - - -/* END */ |