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Diffstat (limited to 'src/truetype/ttdriver.c')
-rw-r--r-- | src/truetype/ttdriver.c | 456 |
1 files changed, 0 insertions, 456 deletions
diff --git a/src/truetype/ttdriver.c b/src/truetype/ttdriver.c deleted file mode 100644 index 2647cf5..0000000 --- a/src/truetype/ttdriver.c +++ /dev/null @@ -1,456 +0,0 @@ -/***************************************************************************/ -/* */ -/* ttdriver.c */ -/* */ -/* TrueType font driver implementation (body). */ -/* */ -/* Copyright 1996-2001, 2002, 2003, 2004, 2005, 2006, 2007 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_TRUETYPE_IDS_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" - - - /*************************************************************************/ - /* */ - /* 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_UInt flags, - FT_Fixed *advances ) - { - FT_UInt nn; - TT_Face face = (TT_Face) ttface; - FT_Bool check = FT_BOOL(!(flags & FT_LOAD_IGNORE_GLOBAL_ADVANCE_WIDTH)); - - /* 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, check, &tsb, &ah ); - advances[nn] = ah; - } - } - else - { - for (nn = 0; nn < count; nn++) - { - FT_Short lsb; - FT_UShort aw; - - TT_Get_HMetrics( face, start + nn, check, &lsb, &aw ); - advances[nn] = aw; - } - } - return 0; - } - - /*************************************************************************/ - /*************************************************************************/ - /*************************************************************************/ - /**** ****/ - /**** ****/ - /**** 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 */ - /* FTLOAD_??? 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 || glyph_index >= (FT_UInt)face->num_glyphs ) - return TT_Err_Invalid_Argument; - - if ( load_flags & ( FT_LOAD_NO_RECURSE | FT_LOAD_NO_SCALE ) ) - { - load_flags |= FT_LOAD_NO_HINTING | - FT_LOAD_NO_BITMAP | - FT_LOAD_NO_SCALE; - } - - /* 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 - static const FT_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 */ - }; - - static const FT_Service_TTGlyfRec tt_service_truetype_glyf = - { - (TT_Glyf_GetLocationFunc)tt_face_get_location - }; - - static const FT_ServiceDescRec tt_services[] = - { - { FT_SERVICE_ID_XF86_NAME, FT_XF86_FORMAT_TRUETYPE }, -#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT - { FT_SERVICE_ID_MULTI_MASTERS, &tt_service_gx_multi_masters }, -#endif - { FT_SERVICE_ID_TRUETYPE_ENGINE, &tt_service_truetype_engine }, - { FT_SERVICE_ID_TT_GLYF, &tt_service_truetype_glyf }, - { NULL, NULL } - }; - - - 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( tt_services, tt_interface ); - if ( result != NULL ) - return result; - - /* 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. */ - - FT_CALLBACK_TABLE_DEF - const FT_Driver_ClassRec tt_driver_class = - { - { - FT_MODULE_FONT_DRIVER | - FT_MODULE_DRIVER_SCALABLE | -#ifdef TT_USE_BYTECODE_INTERPRETER - FT_MODULE_DRIVER_HAS_HINTER, -#else - 0, -#endif - - 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 */ - -#ifdef FT_CONFIG_OPTION_OLD_INTERNALS - ft_stub_set_char_sizes, - ft_stub_set_pixel_sizes, -#endif - Load_Glyph, - - tt_get_kerning, - 0, /* FT_Face_AttachFunc */ - tt_get_advances, - - tt_size_request, -#ifdef TT_CONFIG_OPTION_EMBEDDED_BITMAPS - tt_size_select -#else - 0 /* FT_Size_SelectFunc */ -#endif - }; - - -/* END */ |