+++ /dev/null
-/***************************************************************************/
-/* */
-/* t1gload.c */
-/* */
-/* Type 1 Glyph Loader (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 "t1gload.h"
-#include FT_INTERNAL_CALC_H
-#include FT_INTERNAL_DEBUG_H
-#include FT_INTERNAL_STREAM_H
-#include FT_OUTLINE_H
-#include FT_INTERNAL_POSTSCRIPT_AUX_H
-
-#include "t1errors.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_t1gload
-
-
- /*************************************************************************/
- /*************************************************************************/
- /*************************************************************************/
- /********** *********/
- /********** COMPUTE THE MAXIMUM ADVANCE WIDTH *********/
- /********** *********/
- /********** The following code is in charge of computing *********/
- /********** the maximum advance width of the font. It *********/
- /********** quickly processes each glyph charstring to *********/
- /********** extract the value from either a `sbw' or `seac' *********/
- /********** operator. *********/
- /********** *********/
- /*************************************************************************/
- /*************************************************************************/
- /*************************************************************************/
-
-
- static FT_Error
- T1_Parse_Glyph_And_Get_Char_String( T1_Decoder decoder,
- FT_UInt glyph_index,
- FT_Data* char_string )
- {
- T1_Face face = (T1_Face)decoder->builder.face;
- T1_Font type1 = &face->type1;
- FT_Error error = FT_Err_Ok;
-
-#ifdef FT_CONFIG_OPTION_INCREMENTAL
- FT_Incremental_InterfaceRec *inc =
- face->root.internal->incremental_interface;
-#endif
-
-
- decoder->font_matrix = type1->font_matrix;
- decoder->font_offset = type1->font_offset;
-
-#ifdef FT_CONFIG_OPTION_INCREMENTAL
-
- /* For incremental fonts get the character data using the */
- /* callback function. */
- if ( inc )
- error = inc->funcs->get_glyph_data( inc->object,
- glyph_index, char_string );
- else
-
-#endif /* FT_CONFIG_OPTION_INCREMENTAL */
-
- /* For ordinary fonts get the character data stored in the face record. */
- {
- char_string->pointer = type1->charstrings[glyph_index];
- char_string->length = (FT_Int)type1->charstrings_len[glyph_index];
- }
-
- if ( !error )
- error = decoder->funcs.parse_charstrings(
- decoder, (FT_Byte*)char_string->pointer,
- (FT_UInt)char_string->length );
-
-#ifdef FT_CONFIG_OPTION_INCREMENTAL
-
- /* Incremental fonts can optionally override the metrics. */
- if ( !error && inc && inc->funcs->get_glyph_metrics )
- {
- FT_Incremental_MetricsRec metrics;
-
-
- metrics.bearing_x = FIXED_TO_INT( decoder->builder.left_bearing.x );
- metrics.bearing_y = 0;
- metrics.advance = FIXED_TO_INT( decoder->builder.advance.x );
- metrics.advance_v = FIXED_TO_INT( decoder->builder.advance.y );
-
- error = inc->funcs->get_glyph_metrics( inc->object,
- glyph_index, FALSE, &metrics );
-
- decoder->builder.left_bearing.x = INT_TO_FIXED( metrics.bearing_x );
- decoder->builder.advance.x = INT_TO_FIXED( metrics.advance );
- decoder->builder.advance.y = INT_TO_FIXED( metrics.advance_v );
- }
-
-#endif /* FT_CONFIG_OPTION_INCREMENTAL */
-
- return error;
- }
-
-
- FT_CALLBACK_DEF( FT_Error )
- T1_Parse_Glyph( T1_Decoder decoder,
- FT_UInt glyph_index )
- {
- FT_Data glyph_data;
- FT_Error error = T1_Parse_Glyph_And_Get_Char_String(
- decoder, glyph_index, &glyph_data );
-
-
-#ifdef FT_CONFIG_OPTION_INCREMENTAL
-
- if ( !error )
- {
- T1_Face face = (T1_Face)decoder->builder.face;
-
-
- if ( face->root.internal->incremental_interface )
- face->root.internal->incremental_interface->funcs->free_glyph_data(
- face->root.internal->incremental_interface->object,
- &glyph_data );
- }
-
-#endif /* FT_CONFIG_OPTION_INCREMENTAL */
-
- return error;
- }
-
-
- FT_LOCAL_DEF( FT_Error )
- T1_Compute_Max_Advance( T1_Face face,
- FT_Pos* max_advance )
- {
- FT_Error error;
-#ifdef __REACTOS__
- T1_DecoderRec *decoder = malloc(sizeof(T1_DecoderRec));
-/* Ugly but it allows us to reduce the diff */
-#define decoder (*decoder)
-#else
- T1_DecoderRec decoder;
-#endif
- FT_Int glyph_index;
- T1_Font type1 = &face->type1;
- PSAux_Service psaux = (PSAux_Service)face->psaux;
-
-
- FT_ASSERT( ( face->len_buildchar == 0 ) == ( face->buildchar == NULL ) );
-
- *max_advance = 0;
-
- /* initialize load decoder */
- error = psaux->t1_decoder_funcs->init( &decoder,
- (FT_Face)face,
- 0, /* size */
- 0, /* glyph slot */
- (FT_Byte**)type1->glyph_names,
- face->blend,
- 0,
- FT_RENDER_MODE_NORMAL,
- T1_Parse_Glyph );
- if ( error )
-#ifdef __REACTOS__
- {
- free(&decoder);
- return error;
- }
-#else
- return error;
-#endif
-
- decoder.builder.metrics_only = 1;
- decoder.builder.load_points = 0;
-
- decoder.num_subrs = type1->num_subrs;
- decoder.subrs = type1->subrs;
- decoder.subrs_len = type1->subrs_len;
- decoder.subrs_hash = type1->subrs_hash;
-
- decoder.buildchar = face->buildchar;
- decoder.len_buildchar = face->len_buildchar;
-
- *max_advance = 0;
-
- /* for each glyph, parse the glyph charstring and extract */
- /* the advance width */
- for ( glyph_index = 0; glyph_index < type1->num_glyphs; glyph_index++ )
- {
- /* now get load the unscaled outline */
- (void)T1_Parse_Glyph( &decoder, (FT_UInt)glyph_index );
- if ( glyph_index == 0 || decoder.builder.advance.x > *max_advance )
- *max_advance = decoder.builder.advance.x;
-
- /* ignore the error if one occurred - skip to next glyph */
- }
-
- psaux->t1_decoder_funcs->done( &decoder );
-#ifdef __REACTOS__
- free(&decoder);
-#undef decoder
-#endif
- return FT_Err_Ok;
- }
-
-
- FT_LOCAL_DEF( FT_Error )
- T1_Get_Advances( FT_Face t1face, /* T1_Face */
- FT_UInt first,
- FT_UInt count,
- FT_Int32 load_flags,
- FT_Fixed* advances )
- {
- T1_Face face = (T1_Face)t1face;
-#ifdef __REACTOS__
- T1_DecoderRec *decoder = malloc(sizeof(T1_DecoderRec));
-/* Ugly but it allows us to reduce the diff */
-#define decoder (*decoder)
-#else
- T1_DecoderRec decoder;
-#endif
- T1_Font type1 = &face->type1;
- PSAux_Service psaux = (PSAux_Service)face->psaux;
- FT_UInt nn;
- FT_Error error;
-
-
- if ( load_flags & FT_LOAD_VERTICAL_LAYOUT )
- {
- for ( nn = 0; nn < count; nn++ )
- advances[nn] = 0;
-
-#ifdef __REACTOS__
- free(&decoder);
-#endif
- return FT_Err_Ok;
- }
-
- error = psaux->t1_decoder_funcs->init( &decoder,
- (FT_Face)face,
- 0, /* size */
- 0, /* glyph slot */
- (FT_Byte**)type1->glyph_names,
- face->blend,
- 0,
- FT_RENDER_MODE_NORMAL,
- T1_Parse_Glyph );
- if ( error )
-#ifdef __REACTOS__
- {
- free(&decoder);
- return error;
- }
-#else
- return error;
-#endif
-
- decoder.builder.metrics_only = 1;
- decoder.builder.load_points = 0;
-
- decoder.num_subrs = type1->num_subrs;
- decoder.subrs = type1->subrs;
- decoder.subrs_len = type1->subrs_len;
- decoder.subrs_hash = type1->subrs_hash;
-
- decoder.buildchar = face->buildchar;
- decoder.len_buildchar = face->len_buildchar;
-
- for ( nn = 0; nn < count; nn++ )
- {
- error = T1_Parse_Glyph( &decoder, first + nn );
- if ( !error )
- advances[nn] = FIXED_TO_INT( decoder.builder.advance.x );
- else
- advances[nn] = 0;
- }
-#ifdef __REACTOS__
- free(&decoder);
-#undef decoder
-#endif
- return FT_Err_Ok;
- }
-
-
- FT_LOCAL_DEF( FT_Error )
- T1_Load_Glyph( FT_GlyphSlot t1glyph, /* T1_GlyphSlot */
- FT_Size t1size, /* T1_Size */
- FT_UInt glyph_index,
- FT_Int32 load_flags )
- {
- T1_GlyphSlot glyph = (T1_GlyphSlot)t1glyph;
- FT_Error error;
-#ifdef __REACTOS__
- T1_DecoderRec *decoder = malloc(sizeof(T1_DecoderRec));
-/* Ugly but it allows us to reduce the diff */
-#define decoder (*decoder)
-#else
- T1_DecoderRec decoder;
-#endif
- T1_Face face = (T1_Face)t1glyph->face;
- FT_Bool hinting;
- T1_Font type1 = &face->type1;
- PSAux_Service psaux = (PSAux_Service)face->psaux;
- const T1_Decoder_Funcs decoder_funcs = psaux->t1_decoder_funcs;
-
- FT_Matrix font_matrix;
- FT_Vector font_offset;
- FT_Data glyph_data;
- FT_Bool must_finish_decoder = FALSE;
-#ifdef FT_CONFIG_OPTION_INCREMENTAL
- FT_Bool glyph_data_loaded = 0;
-#endif
-
-
-#ifdef FT_CONFIG_OPTION_INCREMENTAL
- if ( glyph_index >= (FT_UInt)face->root.num_glyphs &&
- !face->root.internal->incremental_interface )
-#else
- if ( glyph_index >= (FT_UInt)face->root.num_glyphs )
-#endif /* FT_CONFIG_OPTION_INCREMENTAL */
- {
- error = FT_THROW( Invalid_Argument );
- goto Exit;
- }
-
- FT_TRACE1(( "T1_Load_Glyph: glyph index %d\n", glyph_index ));
-
- FT_ASSERT( ( face->len_buildchar == 0 ) == ( face->buildchar == NULL ) );
-
- if ( load_flags & FT_LOAD_NO_RECURSE )
- load_flags |= FT_LOAD_NO_SCALE | FT_LOAD_NO_HINTING;
-
- if ( t1size )
- {
- glyph->x_scale = t1size->metrics.x_scale;
- glyph->y_scale = t1size->metrics.y_scale;
- }
- else
- {
- glyph->x_scale = 0x10000L;
- glyph->y_scale = 0x10000L;
- }
-
- t1glyph->outline.n_points = 0;
- t1glyph->outline.n_contours = 0;
-
- hinting = FT_BOOL( ( load_flags & FT_LOAD_NO_SCALE ) == 0 &&
- ( load_flags & FT_LOAD_NO_HINTING ) == 0 );
-
- t1glyph->format = FT_GLYPH_FORMAT_OUTLINE;
-
- error = decoder_funcs->init( &decoder,
- t1glyph->face,
- t1size,
- t1glyph,
- (FT_Byte**)type1->glyph_names,
- face->blend,
- FT_BOOL( hinting ),
- FT_LOAD_TARGET_MODE( load_flags ),
- T1_Parse_Glyph );
- if ( error )
- goto Exit;
-
- must_finish_decoder = TRUE;
-
- decoder.builder.no_recurse = FT_BOOL(
- ( load_flags & FT_LOAD_NO_RECURSE ) != 0 );
-
- decoder.num_subrs = type1->num_subrs;
- decoder.subrs = type1->subrs;
- decoder.subrs_len = type1->subrs_len;
- decoder.subrs_hash = type1->subrs_hash;
-
- decoder.buildchar = face->buildchar;
- decoder.len_buildchar = face->len_buildchar;
-
- /* now load the unscaled outline */
- error = T1_Parse_Glyph_And_Get_Char_String( &decoder, glyph_index,
- &glyph_data );
- if ( error )
- goto Exit;
-#ifdef FT_CONFIG_OPTION_INCREMENTAL
- glyph_data_loaded = 1;
-#endif
-
- font_matrix = decoder.font_matrix;
- font_offset = decoder.font_offset;
-
- /* save new glyph tables */
- decoder_funcs->done( &decoder );
-
- must_finish_decoder = FALSE;
-
- /* now, set the metrics -- this is rather simple, as */
- /* the left side bearing is the xMin, and the top side */
- /* bearing the yMax */
- if ( !error )
- {
- t1glyph->outline.flags &= FT_OUTLINE_OWNER;
- t1glyph->outline.flags |= FT_OUTLINE_REVERSE_FILL;
-
- /* for composite glyphs, return only left side bearing and */
- /* advance width */
- if ( load_flags & FT_LOAD_NO_RECURSE )
- {
- FT_Slot_Internal internal = t1glyph->internal;
-
-
- t1glyph->metrics.horiBearingX =
- FIXED_TO_INT( decoder.builder.left_bearing.x );
- t1glyph->metrics.horiAdvance =
- FIXED_TO_INT( decoder.builder.advance.x );
-
- internal->glyph_matrix = font_matrix;
- internal->glyph_delta = font_offset;
- internal->glyph_transformed = 1;
- }
- else
- {
- FT_BBox cbox;
- FT_Glyph_Metrics* metrics = &t1glyph->metrics;
-
-
- /* copy the _unscaled_ advance width */
- metrics->horiAdvance =
- FIXED_TO_INT( decoder.builder.advance.x );
- t1glyph->linearHoriAdvance =
- FIXED_TO_INT( decoder.builder.advance.x );
- t1glyph->internal->glyph_transformed = 0;
-
- if ( load_flags & FT_LOAD_VERTICAL_LAYOUT )
- {
- /* make up vertical ones */
- metrics->vertAdvance = ( face->type1.font_bbox.yMax -
- face->type1.font_bbox.yMin ) >> 16;
- t1glyph->linearVertAdvance = metrics->vertAdvance;
- }
- else
- {
- metrics->vertAdvance =
- FIXED_TO_INT( decoder.builder.advance.y );
- t1glyph->linearVertAdvance =
- FIXED_TO_INT( decoder.builder.advance.y );
- }
-
- t1glyph->format = FT_GLYPH_FORMAT_OUTLINE;
-
- if ( t1size && t1size->metrics.y_ppem < 24 )
- t1glyph->outline.flags |= FT_OUTLINE_HIGH_PRECISION;
-
-#if 1
- /* apply the font matrix, if any */
- if ( font_matrix.xx != 0x10000L || font_matrix.yy != 0x10000L ||
- font_matrix.xy != 0 || font_matrix.yx != 0 )
- {
- FT_Outline_Transform( &t1glyph->outline, &font_matrix );
-
- metrics->horiAdvance = FT_MulFix( metrics->horiAdvance,
- font_matrix.xx );
- metrics->vertAdvance = FT_MulFix( metrics->vertAdvance,
- font_matrix.yy );
- }
-
- if ( font_offset.x || font_offset.y )
- {
- FT_Outline_Translate( &t1glyph->outline,
- font_offset.x,
- font_offset.y );
-
- metrics->horiAdvance += font_offset.x;
- metrics->vertAdvance += font_offset.y;
- }
-#endif
-
- if ( ( load_flags & FT_LOAD_NO_SCALE ) == 0 )
- {
- /* scale the outline and the metrics */
- FT_Int n;
- FT_Outline* cur = decoder.builder.base;
- FT_Vector* vec = cur->points;
- FT_Fixed x_scale = glyph->x_scale;
- FT_Fixed y_scale = glyph->y_scale;
-
-
- /* First of all, scale the points, if we are not hinting */
- if ( !hinting || ! decoder.builder.hints_funcs )
- for ( n = cur->n_points; n > 0; n--, vec++ )
- {
- vec->x = FT_MulFix( vec->x, x_scale );
- vec->y = FT_MulFix( vec->y, y_scale );
- }
-
- /* Then scale the metrics */
- metrics->horiAdvance = FT_MulFix( metrics->horiAdvance, x_scale );
- metrics->vertAdvance = FT_MulFix( metrics->vertAdvance, y_scale );
- }
-
- /* compute the other metrics */
- FT_Outline_Get_CBox( &t1glyph->outline, &cbox );
-
- metrics->width = cbox.xMax - cbox.xMin;
- metrics->height = cbox.yMax - cbox.yMin;
-
- metrics->horiBearingX = cbox.xMin;
- metrics->horiBearingY = cbox.yMax;
-
- if ( load_flags & FT_LOAD_VERTICAL_LAYOUT )
- {
- /* make up vertical ones */
- ft_synthesize_vertical_metrics( metrics,
- metrics->vertAdvance );
- }
- }
-
- /* Set control data to the glyph charstrings. Note that this is */
- /* _not_ zero-terminated. */
- t1glyph->control_data = (FT_Byte*)glyph_data.pointer;
- t1glyph->control_len = glyph_data.length;
- }
-
-
- Exit:
-
-#ifdef FT_CONFIG_OPTION_INCREMENTAL
- if ( glyph_data_loaded && face->root.internal->incremental_interface )
- {
- face->root.internal->incremental_interface->funcs->free_glyph_data(
- face->root.internal->incremental_interface->object,
- &glyph_data );
-
- /* Set the control data to null - it is no longer available if */
- /* loaded incrementally. */
- t1glyph->control_data = NULL;
- t1glyph->control_len = 0;
- }
-#endif
-
- if ( must_finish_decoder )
- decoder_funcs->done( &decoder );
-
-#ifdef __REACTOS__
- free(&decoder);
-#undef decoder
-#endif
- return error;
- }
-
-
-/* END */
projects / reactos.git / blobdiff