-/***************************************************************************/
-/* */
-/* ttdriver.c */
-/* */
-/* TrueType font driver implementation (body). */
-/* */
-/* Copyright 1996-2014 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
+/****************************************************************************
+ *
+ * ttdriver.c
+ *
+ * TrueType font driver implementation (body).
+ *
+ * Copyright (C) 1996-2020 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 <freetype/internal/ftdebug.h>
+#include <freetype/internal/ftstream.h>
+#include <freetype/internal/sfnt.h>
+#include <freetype/internal/services/svfntfmt.h>
#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
-#include FT_MULTIPLE_MASTERS_H
-#include FT_SERVICE_MULTIPLE_MASTERS_H
+#include <freetype/ftmm.h>
+#include <freetype/internal/services/svmm.h>
+#include <freetype/internal/services/svmetric.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 <freetype/internal/services/svtteng.h>
+#include <freetype/internal/services/svttglyf.h>
+#include <freetype/internal/services/svprop.h>
+#include <freetype/ftdriver.h>
#include "ttdriver.h"
#include "ttgload.h"
#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. */
- /* */
+ /**************************************************************************
+ *
+ * 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
+#define FT_COMPONENT ttdriver
/*
- * PROPERTY SERVICE
+ * PROPERTY SERVICE
*
*/
static FT_Error
tt_property_set( FT_Module module, /* TT_Driver */
const char* property_name,
- const void* value )
+ 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 = (FT_UInt*)value;
+ FT_UInt interpreter_version;
-#ifndef TT_CONFIG_OPTION_SUBPIXEL_HINTING
- if ( *interpreter_version != TT_INTERPRETER_VERSION_35 )
- error = FT_ERR( Unimplemented_Feature );
+#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
- driver->interpreter_version = *interpreter_version;
+ {
+ 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_DEFINE_SERVICE_PROPERTIESREC(
tt_service_properties,
- (FT_Properties_SetFunc)tt_property_set,
- (FT_Properties_GetFunc)tt_property_get )
+
+ (FT_Properties_SetFunc)tt_property_set, /* set_property */
+ (FT_Properties_GetFunc)tt_property_get /* get_property */
+ )
/*************************************************************************/
/*************************************************************************/
-#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. */
- /* */
+ /**************************************************************************
+ *
+ * @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,
}
-#undef PAIR_TAG
-
-
static FT_Error
tt_get_advances( FT_Face ttface,
FT_UInt start,
FT_Fixed *advances )
{
FT_UInt nn;
- TT_Face face = (TT_Face) ttface;
+ 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 ( ( FT_IS_NAMED_INSTANCE( ttface ) || FT_IS_VARIATION( ttface ) ) &&
+ !( face->variation_support & TT_FACE_FLAG_VAR_VADVANCE ) )
+ return FT_THROW( Unimplemented_Feature );
+#endif
+
for ( nn = 0; nn < count; nn++ )
{
FT_Short tsb;
}
else
{
+#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
+ /* no fast retrieval for blended MM fonts without HVAR table */
+ if ( ( FT_IS_NAMED_INSTANCE( ttface ) || FT_IS_VARIATION( ttface ) ) &&
+ !( face->variation_support & TT_FACE_FLAG_VAR_HADVANCE ) )
+ return FT_THROW( Unimplemented_Feature );
+#endif
+
for ( nn = 0; nn < count; nn++ )
{
FT_Short lsb;
return FT_Err_Ok;
}
+
/*************************************************************************/
/*************************************************************************/
/*************************************************************************/
/* use the scaled metrics, even when tt_size_reset fails */
FT_Select_Metrics( size->face, strike_index );
- tt_size_reset( ttsize ); /* ignore return value */
+ tt_size_reset( ttsize, 0 ); /* ignore return value */
}
else
{
- SFNT_Service sfnt = (SFNT_Service) ttface->sfnt;
- FT_Size_Metrics* metrics = &size->metrics;
+ SFNT_Service sfnt = (SFNT_Service)ttface->sfnt;
+ FT_Size_Metrics* size_metrics = &size->metrics;
- error = sfnt->load_strike_metrics( ttface, strike_index, metrics );
+ error = sfnt->load_strike_metrics( ttface,
+ strike_index,
+ size_metrics );
if ( error )
ttsize->strike_index = 0xFFFFFFFFUL;
}
if ( FT_HAS_FIXED_SIZES( size->face ) )
{
TT_Face ttface = (TT_Face)size->face;
- SFNT_Service sfnt = (SFNT_Service) ttface->sfnt;
+ SFNT_Service sfnt = (SFNT_Service)ttface->sfnt;
FT_ULong strike_index;
if ( FT_IS_SCALABLE( size->face ) )
{
- error = tt_size_reset( ttsize );
- ttsize->root.metrics = ttsize->metrics;
+ error = tt_size_reset( ttsize, 0 );
+
+#ifdef TT_USE_BYTECODE_INTERPRETER
+ /* for the `MPS' bytecode instruction we need the point size */
+ if ( !error )
+ {
+ 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. */
- /* */
+ /**************************************************************************
+ *
+ * @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 */
load_flags |= FT_LOAD_NO_HINTING;
}
- /* now load the glyph outline if necessary */
+ /* use hinted metrics only if we load a glyph with hinting */
+ size->metrics = ( load_flags & FT_LOAD_NO_HINTING )
+ ? &ttsize->metrics
+ : &size->hinted_metrics;
+
+ /* now fill in the glyph slot with outline/bitmap/layered */
error = TT_Load_Glyph( size, slot, glyph_index, load_flags );
/* force drop-out mode to 2 - irrelevant now */
/*************************************************************************/
#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
+
+ (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_Set_Instance_Func) TT_Set_Named_Instance, /* set_instance */
+ (FT_Set_MM_WeightVector_Func)NULL, /* set_mm_weightvector */
+ (FT_Get_MM_WeightVector_Func)NULL, /* get_mm_weightvector */
+
+ (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)tt_vadvance_adjust, /* 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
-#ifdef TT_CONFIG_OPTION_UNPATENTED_HINTING
- FT_TRUETYPE_ENGINE_TYPE_UNPATENTED
-#else
FT_TRUETYPE_ENGINE_TYPE_PATENTED
-#endif
#else /* !TT_USE_BYTECODE_INTERPRETER */
#endif /* TT_USE_BYTECODE_INTERPRETER */
};
+
FT_DEFINE_SERVICE_TTGLYFREC(
tt_service_truetype_glyf,
- (TT_Glyf_GetLocationFunc)tt_face_get_location )
+
+ (TT_Glyf_GetLocationFunc)tt_face_get_location /* get_location */
+ )
+
#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
- FT_DEFINE_SERVICEDESCREC5(
+ FT_DEFINE_SERVICEDESCREC6(
tt_services,
- FT_SERVICE_ID_XF86_NAME, FT_XF86_FORMAT_TRUETYPE,
- FT_SERVICE_ID_MULTI_MASTERS, &TT_SERVICE_GX_MULTI_MASTERS_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 )
+
+ FT_SERVICE_ID_FONT_FORMAT, FT_FONT_FORMAT_TRUETYPE,
+ FT_SERVICE_ID_MULTI_MASTERS, &tt_service_gx_multi_masters,
+ FT_SERVICE_ID_METRICS_VARIATIONS, &tt_service_metrics_variations,
+ FT_SERVICE_ID_TRUETYPE_ENGINE, &tt_service_truetype_engine,
+ FT_SERVICE_ID_TT_GLYF, &tt_service_truetype_glyf,
+ FT_SERVICE_ID_PROPERTIES, &tt_service_properties )
#else
FT_DEFINE_SERVICEDESCREC4(
tt_services,
- FT_SERVICE_ID_XF86_NAME, FT_XF86_FORMAT_TRUETYPE,
+
+ 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 )
+ FT_SERVICE_ID_TT_GLYF, &tt_service_truetype_glyf,
+ FT_SERVICE_ID_PROPERTIES, &tt_service_properties )
#endif
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 != NULL )
+ result = ft_service_list_lookup( tt_services, 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" );
0x10000L, /* driver version == 1.0 */
0x20000L, /* driver requires FreeType 2.0 or above */
- (void*)0, /* driver specific interface */
+ NULL, /* module-specific interface */
- tt_driver_init,
- tt_driver_done,
- tt_get_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,
- tt_face_done,
- tt_size_init,
- tt_size_done,
- tt_slot_init,
- 0, /* FT_Slot_DoneFunc */
+ 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,
+ tt_glyph_load, /* FT_Slot_LoadFunc load_glyph */
- tt_get_kerning,
- 0, /* FT_Face_AttachFunc */
- tt_get_advances,
+ 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,
- TT_SIZE_SELECT
+ tt_size_request, /* FT_Size_RequestFunc request_size */
+ TT_SIZE_SELECT /* FT_Size_SelectFunc select_size */
)
projects / platform / upstream / freetype2.git / blobdiff