diff options
Diffstat (limited to 'src/3rdparty/freetype/src/truetype/ttgload.c')
| -rw-r--r-- | src/3rdparty/freetype/src/truetype/ttgload.c | 1527 |
1 files changed, 682 insertions, 845 deletions
diff --git a/src/3rdparty/freetype/src/truetype/ttgload.c b/src/3rdparty/freetype/src/truetype/ttgload.c index 39d9c3f736..dc427e8a11 100644 --- a/src/3rdparty/freetype/src/truetype/ttgload.c +++ b/src/3rdparty/freetype/src/truetype/ttgload.c @@ -1,31 +1,31 @@ -/***************************************************************************/ -/* */ -/* ttgload.c */ -/* */ -/* TrueType Glyph Loader (body). */ -/* */ -/* Copyright 1996-2018 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. */ -/* */ -/***************************************************************************/ +/**************************************************************************** + * + * ttgload.c + * + * TrueType Glyph Loader (body). + * + * Copyright (C) 1996-2023 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 <freetype/internal/ftdebug.h> #include FT_CONFIG_CONFIG_H -#include FT_INTERNAL_CALC_H -#include FT_INTERNAL_STREAM_H -#include FT_INTERNAL_SFNT_H -#include FT_TRUETYPE_TAGS_H -#include FT_OUTLINE_H -#include FT_DRIVER_H -#include FT_LIST_H +#include <freetype/internal/ftcalc.h> +#include <freetype/internal/ftstream.h> +#include <freetype/internal/sfnt.h> +#include <freetype/tttags.h> +#include <freetype/ftoutln.h> +#include <freetype/ftdriver.h> +#include <freetype/ftlist.h> #include "ttgload.h" #include "ttpload.h" @@ -35,23 +35,37 @@ #endif #include "tterrors.h" -#include "ttsubpix.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_ttgload +#define FT_COMPONENT ttgload - /*************************************************************************/ - /* */ - /* Composite glyph flags. */ - /* */ + /************************************************************************** + * + * Simple glyph flags. + */ +#define ON_CURVE_POINT 0x01 /* same value as FT_CURVE_TAG_ON */ +#define X_SHORT_VECTOR 0x02 +#define Y_SHORT_VECTOR 0x04 +#define REPEAT_FLAG 0x08 +#define X_POSITIVE 0x10 /* two meanings depending on X_SHORT_VECTOR */ +#define SAME_X 0x10 +#define Y_POSITIVE 0x20 /* two meanings depending on Y_SHORT_VECTOR */ +#define SAME_Y 0x20 +#define OVERLAP_SIMPLE 0x40 /* retained as FT_OUTLINE_OVERLAP */ + + + /************************************************************************** + * + * Composite glyph flags. + */ #define ARGS_ARE_WORDS 0x0001 #define ARGS_ARE_XY_VALUES 0x0002 #define ROUND_XY_TO_GRID 0x0004 @@ -62,15 +76,24 @@ #define WE_HAVE_A_2X2 0x0080 #define WE_HAVE_INSTR 0x0100 #define USE_MY_METRICS 0x0200 -#define OVERLAP_COMPOUND 0x0400 +#define OVERLAP_COMPOUND 0x0400 /* retained as FT_OUTLINE_OVERLAP */ #define SCALED_COMPONENT_OFFSET 0x0800 #define UNSCALED_COMPONENT_OFFSET 0x1000 - /*************************************************************************/ - /* */ - /* Return the horizontal metrics in font units for a given glyph. */ - /* */ +#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT +#define IS_DEFAULT_INSTANCE( _face ) \ + ( !( FT_IS_NAMED_INSTANCE( _face ) || \ + FT_IS_VARIATION( _face ) ) ) +#else +#define IS_DEFAULT_INSTANCE( _face ) 1 +#endif + + + /************************************************************************** + * + * Return the horizontal metrics in font units for a given glyph. + */ FT_LOCAL_DEF( void ) TT_Get_HMetrics( TT_Face face, FT_UInt idx, @@ -84,11 +107,11 @@ } - /*************************************************************************/ - /* */ - /* Return the vertical metrics in font units for a given glyph. */ - /* See function `tt_loader_set_pp' below for explanations. */ - /* */ + /************************************************************************** + * + * Return the vertical metrics in font units for a given glyph. + * See function `tt_loader_set_pp' below for explanations. + */ FT_LOCAL_DEF( void ) TT_Get_VMetrics( TT_Face face, FT_UInt idx, @@ -113,6 +136,11 @@ face->horizontal.Descender ); } +#ifdef FT_DEBUG_LEVEL_TRACE + if ( !face->vertical_info ) + FT_TRACE5(( " [vertical metrics missing, computing values]\n" )); +#endif + FT_TRACE5(( " advance height (font units): %d\n", *ah )); FT_TRACE5(( " top side bearing (font units): %d\n", *tsb )); } @@ -123,9 +151,6 @@ FT_UInt glyph_index ) { TT_Face face = loader->face; -#ifdef TT_SUPPORT_SUBPIXEL_HINTING_INFINALITY - TT_Driver driver = (TT_Driver)FT_FACE_DRIVER( face ); -#endif FT_Error error; FT_Stream stream = loader->stream; @@ -154,24 +179,17 @@ loader->top_bearing = top_bearing; loader->vadvance = advance_height; -#ifdef TT_SUPPORT_SUBPIXEL_HINTING_INFINALITY - if ( driver->interpreter_version == TT_INTERPRETER_VERSION_38 && - loader->exec ) - { - loader->exec->sph_tweak_flags = 0; - - /* This may not be the right place for this, but it works... */ - /* Note that we have to unconditionally load the tweaks since */ - /* it is possible that glyphs individually switch ClearType's */ - /* backward compatibility mode on and off. */ - sph_set_tweaks( loader, glyph_index ); - } -#endif /* TT_SUPPORT_SUBPIXEL_HINTING_INFINALITY */ - - if ( !loader->linear_def ) +#ifdef FT_CONFIG_OPTION_INCREMENTAL + /* With the incremental interface, these values are set by */ + /* a call to `tt_get_metrics_incremental'. */ + if ( face->root.internal->incremental_interface == NULL ) +#endif { - loader->linear_def = 1; - loader->linear = advance_width; + if ( !loader->linear_def ) + { + loader->linear_def = 1; + loader->linear = advance_width; + } } return FT_Err_Ok; @@ -181,8 +199,8 @@ #ifdef FT_CONFIG_OPTION_INCREMENTAL static void - tt_get_metrics_incr_overrides( TT_Loader loader, - FT_UInt glyph_index ) + tt_get_metrics_incremental( TT_Loader loader, + FT_UInt glyph_index ) { TT_Face face = loader->face; @@ -250,13 +268,13 @@ #endif /* FT_CONFIG_OPTION_INCREMENTAL */ - /*************************************************************************/ - /* */ - /* The following functions are used by default with TrueType fonts. */ - /* However, they can be replaced by alternatives if we need to support */ - /* TrueType-compressed formats (like MicroType) in the future. */ - /* */ - /*************************************************************************/ + /************************************************************************** + * + * The following functions are used by default with TrueType fonts. + * However, they can be replaced by alternatives if we need to support + * TrueType-compressed formats (like MicroType) in the future. + * + */ FT_CALLBACK_DEF( FT_Error ) TT_Access_Glyph_Frame( TT_Loader loader, @@ -267,12 +285,9 @@ FT_Error error; FT_Stream stream = loader->stream; - /* for non-debug mode */ FT_UNUSED( glyph_index ); - FT_TRACE4(( "Glyph %ld\n", glyph_index )); - /* the following line sets the `error' variable through macros! */ if ( FT_STREAM_SEEK( offset ) || FT_FRAME_ENTER( byte_count ) ) return error; @@ -312,9 +327,9 @@ loader->bbox.yMax = FT_NEXT_SHORT( p ); FT_TRACE5(( " # of contours: %d\n", loader->n_contours )); - FT_TRACE5(( " xMin: %4d xMax: %4d\n", loader->bbox.xMin, + FT_TRACE5(( " xMin: %4ld xMax: %4ld\n", loader->bbox.xMin, loader->bbox.xMax )); - FT_TRACE5(( " yMin: %4d yMax: %4d\n", loader->bbox.yMin, + FT_TRACE5(( " yMin: %4ld yMax: %4ld\n", loader->bbox.yMin, loader->bbox.yMax )); loader->cursor = p; @@ -329,17 +344,16 @@ FT_Byte* p = load->cursor; FT_Byte* limit = load->limit; FT_GlyphLoader gloader = load->gloader; + FT_Outline* outline = &gloader->current.outline; FT_Int n_contours = load->n_contours; - FT_Outline* outline; - FT_UShort n_ins; FT_Int n_points; + FT_UShort n_ins; FT_Byte *flag, *flag_limit; FT_Byte c, count; FT_Vector *vec, *vec_limit; - FT_Pos x; - FT_Short *cont, *cont_limit, prev_cont; - FT_Int xy_size = 0; + FT_Pos x, y; + FT_Short *cont, *cont_limit, last; /* check that we can add the contours to the glyph */ @@ -347,99 +361,76 @@ if ( error ) goto Fail; - /* reading the contours' endpoints & number of points */ - cont = gloader->current.outline.contours; - cont_limit = cont + n_contours; - /* check space for contours array + instructions count */ - if ( n_contours >= 0xFFF || p + ( n_contours + 1 ) * 2 > limit ) + if ( n_contours >= 0xFFF || p + 2 * n_contours + 2 > limit ) goto Invalid_Outline; - prev_cont = FT_NEXT_SHORT( p ); - - if ( n_contours > 0 ) - cont[0] = prev_cont; - - if ( prev_cont < 0 ) - goto Invalid_Outline; + /* reading the contours' endpoints & number of points */ + cont = outline->contours; + cont_limit = cont + n_contours; - for ( cont++; cont < cont_limit; cont++ ) + last = -1; + for ( ; cont < cont_limit; cont++ ) { - cont[0] = FT_NEXT_SHORT( p ); - if ( cont[0] <= prev_cont ) - { - /* unordered contours: this is invalid */ - goto Invalid_Outline; - } - prev_cont = cont[0]; - } + *cont = FT_NEXT_SHORT( p ); - n_points = 0; - if ( n_contours > 0 ) - { - n_points = cont[-1] + 1; - if ( n_points < 0 ) + if ( *cont <= last ) goto Invalid_Outline; + + last = *cont; } + n_points = last + 1; + + FT_TRACE5(( " # of points: %d\n", n_points )); + /* note that we will add four phantom points later */ error = FT_GLYPHLOADER_CHECK_POINTS( gloader, n_points + 4, 0 ); if ( error ) goto Fail; - /* reading the bytecode instructions */ - load->glyph->control_len = 0; - load->glyph->control_data = NULL; - - if ( p + 2 > limit ) - goto Invalid_Outline; - + /* space checked above */ n_ins = FT_NEXT_USHORT( p ); FT_TRACE5(( " Instructions size: %u\n", n_ins )); + /* check instructions size */ + if ( p + n_ins > limit ) + { + FT_TRACE1(( "TT_Load_Simple_Glyph: excessive instruction count\n" )); + error = FT_THROW( Too_Many_Hints ); + goto Fail; + } + #ifdef TT_USE_BYTECODE_INTERPRETER if ( IS_HINTED( load->load_flags ) ) { - FT_ULong tmp; + TT_ExecContext exec = load->exec; + FT_Memory memory = exec->memory; - /* check instructions size */ - if ( ( limit - p ) < n_ins ) - { - FT_TRACE1(( "TT_Load_Simple_Glyph: instruction count mismatch\n" )); - error = FT_THROW( Too_Many_Hints ); - goto Fail; - } + if ( exec->glyphSize ) + FT_FREE( exec->glyphIns ); + exec->glyphSize = 0; /* we don't trust `maxSizeOfInstructions' in the `maxp' table */ - /* and thus update the bytecode array size by ourselves */ - - tmp = load->exec->glyphSize; - error = Update_Max( load->exec->memory, - &tmp, - sizeof ( FT_Byte ), - (void*)&load->exec->glyphIns, - n_ins ); - - load->exec->glyphSize = (FT_UShort)tmp; - if ( error ) - return error; + /* and thus allocate the bytecode array size by ourselves */ + if ( n_ins ) + { + if ( FT_QNEW_ARRAY( exec->glyphIns, n_ins ) ) + return error; - load->glyph->control_len = n_ins; - load->glyph->control_data = load->exec->glyphIns; + FT_MEM_COPY( exec->glyphIns, p, (FT_Long)n_ins ); - if ( n_ins ) - FT_MEM_COPY( load->exec->glyphIns, p, (FT_Long)n_ins ); + exec->glyphSize = n_ins; + } } #endif /* TT_USE_BYTECODE_INTERPRETER */ p += n_ins; - outline = &gloader->current.outline; - /* reading the point tags */ flag = (FT_Byte*)outline->tags; flag_limit = flag + n_points; @@ -452,7 +443,7 @@ goto Invalid_Outline; *flag++ = c = FT_NEXT_BYTE( p ); - if ( c & 8 ) + if ( c & REPEAT_FLAG ) { if ( p + 1 > limit ) goto Invalid_Outline; @@ -466,6 +457,10 @@ } } + /* retain the overlap flag */ + if ( n_points && outline->tags[0] & OVERLAP_SIMPLE ) + gloader->base.outline.flags |= FT_OUTLINE_OVERLAP; + /* reading the X coordinates */ vec = outline->points; @@ -473,72 +468,68 @@ flag = (FT_Byte*)outline->tags; x = 0; - if ( p + xy_size > limit ) - goto Invalid_Outline; - for ( ; vec < vec_limit; vec++, flag++ ) { - FT_Pos y = 0; - FT_Byte f = *flag; + FT_Pos delta = 0; + FT_Byte f = *flag; - if ( f & 2 ) + if ( f & X_SHORT_VECTOR ) { if ( p + 1 > limit ) goto Invalid_Outline; - y = (FT_Pos)FT_NEXT_BYTE( p ); - if ( ( f & 16 ) == 0 ) - y = -y; + delta = (FT_Pos)FT_NEXT_BYTE( p ); + if ( !( f & X_POSITIVE ) ) + delta = -delta; } - else if ( ( f & 16 ) == 0 ) + else if ( !( f & SAME_X ) ) { if ( p + 2 > limit ) goto Invalid_Outline; - y = (FT_Pos)FT_NEXT_SHORT( p ); + delta = (FT_Pos)FT_NEXT_SHORT( p ); } - x += y; + x += delta; vec->x = x; - /* the cast is for stupid compilers */ - *flag = (FT_Byte)( f & ~( 2 | 16 ) ); } /* reading the Y coordinates */ - vec = gloader->current.outline.points; + vec = outline->points; vec_limit = vec + n_points; flag = (FT_Byte*)outline->tags; - x = 0; + y = 0; for ( ; vec < vec_limit; vec++, flag++ ) { - FT_Pos y = 0; - FT_Byte f = *flag; + FT_Pos delta = 0; + FT_Byte f = *flag; - if ( f & 4 ) + if ( f & Y_SHORT_VECTOR ) { if ( p + 1 > limit ) goto Invalid_Outline; - y = (FT_Pos)FT_NEXT_BYTE( p ); - if ( ( f & 32 ) == 0 ) - y = -y; + delta = (FT_Pos)FT_NEXT_BYTE( p ); + if ( !( f & Y_POSITIVE ) ) + delta = -delta; } - else if ( ( f & 32 ) == 0 ) + else if ( !( f & SAME_Y ) ) { if ( p + 2 > limit ) goto Invalid_Outline; - y = (FT_Pos)FT_NEXT_SHORT( p ); + delta = (FT_Pos)FT_NEXT_SHORT( p ); } - x += y; - vec->y = x; + y += delta; + vec->y = y; + /* the cast is for stupid compilers */ - *flag = (FT_Byte)( f & FT_CURVE_TAG_ON ); + *flag = (FT_Byte)( f & ON_CURVE_POINT ); } outline->n_points = (FT_Short)n_points; @@ -559,9 +550,10 @@ TT_Load_Composite_Glyph( TT_Loader loader ) { FT_Error error; - FT_Byte* p = loader->cursor; - FT_Byte* limit = loader->limit; - FT_GlyphLoader gloader = loader->gloader; + FT_Byte* p = loader->cursor; + FT_Byte* limit = loader->limit; + FT_GlyphLoader gloader = loader->gloader; + FT_Long num_glyphs = loader->face->root.num_glyphs; FT_SubGlyph subglyph; FT_UInt num_subglyphs; @@ -590,6 +582,11 @@ subglyph->flags = FT_NEXT_USHORT( p ); subglyph->index = FT_NEXT_USHORT( p ); + /* we reject composites that have components */ + /* with invalid glyph indices */ + if ( subglyph->index >= num_glyphs ) + goto Invalid_Composite; + /* check space */ count = 2; if ( subglyph->flags & ARGS_ARE_WORDS ) @@ -693,18 +690,20 @@ if ( subglyph->flags & WE_HAVE_A_SCALE ) FT_TRACE7(( " scaling: %f\n", - subglyph->transform.xx / 65536.0 )); + (double)subglyph->transform.xx / 65536 )); else if ( subglyph->flags & WE_HAVE_AN_XY_SCALE ) FT_TRACE7(( " scaling: x=%f, y=%f\n", - subglyph->transform.xx / 65536.0, - subglyph->transform.yy / 65536.0 )); + (double)subglyph->transform.xx / 65536, + (double)subglyph->transform.yy / 65536 )); else if ( subglyph->flags & WE_HAVE_A_2X2 ) - FT_TRACE7(( " scaling: xx=%f, yx=%f\n" - " xy=%f, yy=%f\n", - subglyph->transform.xx / 65536.0, - subglyph->transform.yx / 65536.0, - subglyph->transform.xy / 65536.0, - subglyph->transform.yy / 65536.0 )); + { + FT_TRACE7(( " scaling: xx=%f, yx=%f\n", + (double)subglyph->transform.xx / 65536, + (double)subglyph->transform.yx / 65536 )); + FT_TRACE7(( " xy=%f, yy=%f\n", + (double)subglyph->transform.xy / 65536, + (double)subglyph->transform.yy / 65536 )); + } subglyph++; } @@ -755,7 +754,7 @@ FT_UInt start_point, FT_UInt start_contour ) { - zone->n_points = (FT_UShort)load->outline.n_points - + zone->n_points = (FT_UShort)load->outline.n_points + 4 - (FT_UShort)start_point; zone->n_contours = load->outline.n_contours - (FT_Short)start_contour; @@ -768,21 +767,20 @@ } - /*************************************************************************/ - /* */ - /* <Function> */ - /* TT_Hint_Glyph */ - /* */ - /* <Description> */ - /* Hint the glyph using the zone prepared by the caller. Note that */ - /* the zone is supposed to include four phantom points. */ - /* */ + /************************************************************************** + * + * @Function: + * TT_Hint_Glyph + * + * @Description: + * Hint the glyph using the zone prepared by the caller. Note that + * the zone is supposed to include four phantom points. + */ static FT_Error TT_Hint_Glyph( TT_Loader loader, FT_Bool is_composite ) { -#if defined TT_SUPPORT_SUBPIXEL_HINTING_INFINALITY || \ - defined TT_SUPPORT_SUBPIXEL_HINTING_MINIMAL +#ifdef TT_SUPPORT_SUBPIXEL_HINTING_MINIMAL TT_Face face = loader->face; TT_Driver driver = (TT_Driver)FT_FACE_DRIVER( face ); #endif @@ -790,41 +788,34 @@ TT_GlyphZone zone = &loader->zone; #ifdef TT_USE_BYTECODE_INTERPRETER - FT_Long n_ins; + TT_ExecContext exec = loader->exec; + FT_Long n_ins = exec->glyphSize; #else FT_UNUSED( is_composite ); #endif #ifdef TT_USE_BYTECODE_INTERPRETER - if ( loader->glyph->control_len > 0xFFFFL ) - { - FT_TRACE1(( "TT_Hint_Glyph: too long instructions" )); - FT_TRACE1(( " (0x%lx byte) is truncated\n", - loader->glyph->control_len )); - } - n_ins = loader->glyph->control_len; - - /* save original point position in org */ + /* save original point positions in `org' array */ if ( n_ins > 0 ) FT_ARRAY_COPY( zone->org, zone->cur, zone->n_points ); /* Reset graphics state. */ - loader->exec->GS = loader->size->GS; + exec->GS = loader->size->GS; /* XXX: UNDOCUMENTED! Hinting instructions of a composite glyph */ /* completely refer to the (already) hinted subglyphs. */ if ( is_composite ) { - loader->exec->metrics.x_scale = 1 << 16; - loader->exec->metrics.y_scale = 1 << 16; + exec->metrics.x_scale = 1 << 16; + exec->metrics.y_scale = 1 << 16; FT_ARRAY_COPY( zone->orus, zone->cur, zone->n_points ); } else { - loader->exec->metrics.x_scale = loader->size->metrics->x_scale; - loader->exec->metrics.y_scale = loader->size->metrics->y_scale; + exec->metrics.x_scale = loader->size->metrics->x_scale; + exec->metrics.y_scale = loader->size->metrics->y_scale; } #endif @@ -844,116 +835,87 @@ { FT_Error error; - FT_GlyphLoader gloader = loader->gloader; - FT_Outline current_outline = gloader->current.outline; + TT_Set_CodeRange( exec, tt_coderange_glyph, exec->glyphIns, n_ins ); - TT_Set_CodeRange( loader->exec, tt_coderange_glyph, - loader->exec->glyphIns, n_ins ); + exec->is_composite = is_composite; + exec->pts = *zone; - loader->exec->is_composite = is_composite; - loader->exec->pts = *zone; - - error = TT_Run_Context( loader->exec ); - if ( error && loader->exec->pedantic_hinting ) + error = TT_Run_Context( exec ); + if ( error && exec->pedantic_hinting ) return error; /* store drop-out mode in bits 5-7; set bit 2 also as a marker */ - current_outline.tags[0] |= - ( loader->exec->GS.scan_type << 5 ) | FT_CURVE_TAG_HAS_SCANMODE; + loader->gloader->current.outline.tags[0] |= + ( exec->GS.scan_type << 5 ) | FT_CURVE_TAG_HAS_SCANMODE; } #endif -#ifdef TT_SUPPORT_SUBPIXEL_HINTING_MINIMAL /* Save possibly modified glyph phantom points unless in v40 backward */ /* compatibility mode, where no movement on the x axis means no reason */ /* to change bearings or advance widths. */ - if ( !( driver->interpreter_version == TT_INTERPRETER_VERSION_40 && - loader->exec->backward_compatibility ) ) - { -#endif - loader->pp1 = zone->cur[zone->n_points - 4]; - loader->pp2 = zone->cur[zone->n_points - 3]; - loader->pp3 = zone->cur[zone->n_points - 2]; - loader->pp4 = zone->cur[zone->n_points - 1]; + #ifdef TT_SUPPORT_SUBPIXEL_HINTING_MINIMAL - } + if ( driver->interpreter_version == TT_INTERPRETER_VERSION_40 && + exec->backward_compatibility ) + return FT_Err_Ok; #endif -#ifdef TT_SUPPORT_SUBPIXEL_HINTING_INFINALITY - if ( driver->interpreter_version == TT_INTERPRETER_VERSION_38 ) - { - if ( loader->exec->sph_tweak_flags & SPH_TWEAK_DEEMBOLDEN ) - FT_Outline_EmboldenXY( &loader->gloader->current.outline, -24, 0 ); - - else if ( loader->exec->sph_tweak_flags & SPH_TWEAK_EMBOLDEN ) - FT_Outline_EmboldenXY( &loader->gloader->current.outline, 24, 0 ); - } -#endif /* TT_SUPPORT_SUBPIXEL_HINTING_INFINALITY */ + loader->pp1 = zone->cur[zone->n_points - 4]; + loader->pp2 = zone->cur[zone->n_points - 3]; + loader->pp3 = zone->cur[zone->n_points - 2]; + loader->pp4 = zone->cur[zone->n_points - 1]; return FT_Err_Ok; } - /*************************************************************************/ - /* */ - /* <Function> */ - /* TT_Process_Simple_Glyph */ - /* */ - /* <Description> */ - /* Once a simple glyph has been loaded, it needs to be processed. */ - /* Usually, this means scaling and hinting through bytecode */ - /* interpretation. */ - /* */ + /************************************************************************** + * + * @Function: + * TT_Process_Simple_Glyph + * + * @Description: + * Once a simple glyph has been loaded, it needs to be processed. + * Usually, this means scaling and hinting through bytecode + * interpretation. + */ static FT_Error TT_Process_Simple_Glyph( TT_Loader loader ) { - FT_GlyphLoader gloader = loader->gloader; - FT_Error error = FT_Err_Ok; - FT_Outline* outline; - FT_Int n_points; + FT_Error error = FT_Err_Ok; + FT_GlyphLoader gloader = loader->gloader; + FT_Outline* outline = &gloader->current.outline; + FT_Int n_points = outline->n_points; +#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT + FT_Memory memory = loader->face->root.memory; + FT_Vector* unrounded = NULL; +#endif - outline = &gloader->current.outline; - n_points = outline->n_points; /* set phantom points */ - outline->points[n_points ] = loader->pp1; outline->points[n_points + 1] = loader->pp2; outline->points[n_points + 2] = loader->pp3; outline->points[n_points + 3] = loader->pp4; - outline->tags[n_points ] = 0; - outline->tags[n_points + 1] = 0; - outline->tags[n_points + 2] = 0; - outline->tags[n_points + 3] = 0; - n_points += 4; #ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT - if ( FT_IS_NAMED_INSTANCE( FT_FACE( loader->face ) ) || - FT_IS_VARIATION( FT_FACE( loader->face ) ) ) + if ( !IS_DEFAULT_INSTANCE( FT_FACE( loader->face ) ) ) { + if ( FT_QNEW_ARRAY( unrounded, n_points ) ) + goto Exit; + /* Deltas apply to the unscaled data. */ - error = TT_Vary_Apply_Glyph_Deltas( loader->face, - loader->glyph_index, + error = TT_Vary_Apply_Glyph_Deltas( loader, outline, - (FT_UInt)n_points ); - - /* recalculate linear horizontal and vertical advances */ - /* if we don't have HVAR and VVAR, respectively */ - if ( !( loader->face->variation_support & TT_FACE_FLAG_VAR_HADVANCE ) ) - loader->linear = outline->points[n_points - 3].x - - outline->points[n_points - 4].x; - if ( !( loader->face->variation_support & TT_FACE_FLAG_VAR_VADVANCE ) ) - loader->vadvance = outline->points[n_points - 1].x - - outline->points[n_points - 2].x; - + unrounded ); if ( error ) - return error; + goto Exit; } #endif /* TT_CONFIG_OPTION_GX_VAR_SUPPORT */ @@ -963,20 +925,10 @@ tt_prepare_zone( &loader->zone, &gloader->current, 0, 0 ); FT_ARRAY_COPY( loader->zone.orus, loader->zone.cur, - loader->zone.n_points + 4 ); + loader->zone.n_points ); } { -#ifdef TT_SUPPORT_SUBPIXEL_HINTING_INFINALITY - TT_Face face = loader->face; - TT_Driver driver = (TT_Driver)FT_FACE_DRIVER( face ); - - FT_String* family = face->root.family_name; - FT_UInt ppem = loader->size->metrics->x_ppem; - FT_String* style = face->root.style_name; - FT_UInt x_scale_factor = 1000; -#endif - FT_Vector* vec = outline->points; FT_Vector* limit = outline->points + n_points; @@ -986,39 +938,6 @@ FT_Bool do_scale = FALSE; -#ifdef TT_SUPPORT_SUBPIXEL_HINTING_INFINALITY - - if ( driver->interpreter_version == TT_INTERPRETER_VERSION_38 ) - { - /* scale, but only if enabled and only if TT hinting is being used */ - if ( IS_HINTED( loader->load_flags ) ) - x_scale_factor = sph_test_tweak_x_scaling( face, - family, - ppem, - style, - loader->glyph_index ); - /* scale the glyph */ - if ( ( loader->load_flags & FT_LOAD_NO_SCALE ) == 0 || - x_scale_factor != 1000 ) - { - x_scale = FT_MulDiv( loader->size->metrics->x_scale, - (FT_Long)x_scale_factor, 1000 ); - y_scale = loader->size->metrics->y_scale; - - /* compensate for any scaling by de/emboldening; */ - /* the amount was determined via experimentation */ - if ( x_scale_factor != 1000 && ppem > 11 ) - FT_Outline_EmboldenXY( outline, - FT_MulFix( 1280 * ppem, - 1000 - x_scale_factor ), - 0 ); - do_scale = TRUE; - } - } - else - -#endif /* TT_SUPPORT_SUBPIXEL_HINTING_INFINALITY */ - { /* scale the glyph */ if ( ( loader->load_flags & FT_LOAD_NO_SCALE ) == 0 ) @@ -1032,17 +951,40 @@ if ( do_scale ) { - for ( ; vec < limit; vec++ ) +#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT + if ( !IS_DEFAULT_INSTANCE( FT_FACE( loader->face ) ) ) { - vec->x = FT_MulFix( vec->x, x_scale ); - vec->y = FT_MulFix( vec->y, y_scale ); + FT_Vector* u = unrounded; + + + for ( ; vec < limit; vec++, u++ ) + { + vec->x = ADD_LONG( FT_MulFix( u->x, x_scale ), 32 ) >> 6; + vec->y = ADD_LONG( FT_MulFix( u->y, y_scale ), 32 ) >> 6; + } + } + else +#endif /* TT_CONFIG_OPTION_GX_VAR_SUPPORT */ + { + for ( ; vec < limit; vec++ ) + { + vec->x = FT_MulFix( vec->x, x_scale ); + vec->y = FT_MulFix( vec->y, y_scale ); + } } } #ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT - /* if we have a HVAR table, `pp1' and/or `pp2' are already adjusted */ - if ( !( loader->face->variation_support & TT_FACE_FLAG_VAR_HADVANCE ) || - !IS_HINTED( loader->load_flags ) ) + /* if we have a HVAR table, `pp1' and/or `pp2' */ + /* are already adjusted but unscaled */ + if ( ( loader->face->variation_support & TT_FACE_FLAG_VAR_HADVANCE ) && + IS_HINTED( loader->load_flags ) ) + { + loader->pp1.x = FT_MulFix( loader->pp1.x, x_scale ); + loader->pp2.x = FT_MulFix( loader->pp2.x, x_scale ); + /* pp1.y and pp2.y are always zero */ + } + else #endif { loader->pp1 = outline->points[n_points - 4]; @@ -1050,9 +992,17 @@ } #ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT - /* if we have a VVAR table, `pp3' and/or `pp4' are already adjusted */ - if ( !( loader->face->variation_support & TT_FACE_FLAG_VAR_VADVANCE ) || - !IS_HINTED( loader->load_flags ) ) + /* if we have a VVAR table, `pp3' and/or `pp4' */ + /* are already adjusted but unscaled */ + if ( ( loader->face->variation_support & TT_FACE_FLAG_VAR_VADVANCE ) && + IS_HINTED( loader->load_flags ) ) + { + loader->pp3.x = FT_MulFix( loader->pp3.x, x_scale ); + loader->pp3.y = FT_MulFix( loader->pp3.y, y_scale ); + loader->pp4.x = FT_MulFix( loader->pp4.x, x_scale ); + loader->pp4.y = FT_MulFix( loader->pp4.y, y_scale ); + } + else #endif { loader->pp3 = outline->points[n_points - 2]; @@ -1061,25 +1011,26 @@ } if ( IS_HINTED( loader->load_flags ) ) - { - loader->zone.n_points += 4; - error = TT_Hint_Glyph( loader, 0 ); - } + +#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT + Exit: + FT_FREE( unrounded ); +#endif return error; } - /*************************************************************************/ - /* */ - /* <Function> */ - /* TT_Process_Composite_Component */ - /* */ - /* <Description> */ - /* Once a composite component has been loaded, it needs to be */ - /* processed. Usually, this means transforming and translating. */ - /* */ + /************************************************************************** + * + * @Function: + * TT_Process_Composite_Component + * + * @Description: + * Once a composite component has been loaded, it needs to be + * processed. Usually, this means transforming and translating. + */ static FT_Error TT_Process_Composite_Component( TT_Loader loader, FT_SubGlyph subglyph, @@ -1128,8 +1079,8 @@ p1 = gloader->base.outline.points + k; p2 = gloader->base.outline.points + l; - x = p1->x - p2->x; - y = p1->y - p2->y; + x = SUB_LONG( p1->x, p2->x ); + y = SUB_LONG( p1->y, p2->y ); } else { @@ -1153,10 +1104,10 @@ #if 0 - /*******************************************************************/ - /* */ - /* This algorithm is what Apple documents. But it doesn't work. */ - /* */ + /******************************************************************** + * + * This algorithm is what Apple documents. But it doesn't work. + */ int a = subglyph->transform.xx > 0 ? subglyph->transform.xx : -subglyph->transform.xx; int b = subglyph->transform.yx > 0 ? subglyph->transform.yx @@ -1178,10 +1129,10 @@ #else /* 1 */ - /*******************************************************************/ - /* */ - /* This algorithm is a guess and works much better than the above. */ - /* */ + /******************************************************************** + * + * This algorithm is a guess and works much better than the above. + */ FT_Fixed mac_xscale = FT_Hypot( subglyph->transform.xx, subglyph->transform.xy ); FT_Fixed mac_yscale = FT_Hypot( subglyph->transform.yy, @@ -1239,28 +1190,28 @@ } - /*************************************************************************/ - /* */ - /* <Function> */ - /* TT_Process_Composite_Glyph */ - /* */ - /* <Description> */ - /* This is slightly different from TT_Process_Simple_Glyph, in that */ - /* its sole purpose is to hint the glyph. Thus this function is */ - /* only available when bytecode interpreter is enabled. */ - /* */ + /************************************************************************** + * + * @Function: + * TT_Process_Composite_Glyph + * + * @Description: + * This is slightly different from TT_Process_Simple_Glyph, in that + * its sole purpose is to hint the glyph. Thus this function is + * only available when bytecode interpreter is enabled. + */ static FT_Error TT_Process_Composite_Glyph( TT_Loader loader, FT_UInt start_point, FT_UInt start_contour ) { FT_Error error; - FT_Outline* outline; + FT_Outline* outline = &loader->gloader->base.outline; + FT_Stream stream = loader->stream; + FT_UShort n_ins; FT_UInt i; - outline = &loader->gloader->base.outline; - /* make room for phantom points */ error = FT_GLYPHLOADER_CHECK_POINTS( loader->gloader, outline->n_points + 4, @@ -1273,18 +1224,16 @@ outline->points[outline->n_points + 2] = loader->pp3; outline->points[outline->n_points + 3] = loader->pp4; - outline->tags[outline->n_points ] = 0; - outline->tags[outline->n_points + 1] = 0; - outline->tags[outline->n_points + 2] = 0; - outline->tags[outline->n_points + 3] = 0; - #ifdef TT_USE_BYTECODE_INTERPRETER { - FT_Stream stream = loader->stream; - FT_UShort n_ins, max_ins; - FT_ULong tmp; + TT_ExecContext exec = loader->exec; + FT_Memory memory = exec->memory; + + if ( exec->glyphSize ) + FT_FREE( exec->glyphIns ); + exec->glyphSize = 0; /* TT_Load_Composite_Glyph only gives us the offset of instructions */ /* so we read them here */ @@ -1292,41 +1241,26 @@ FT_READ_USHORT( n_ins ) ) return error; - FT_TRACE5(( " Instructions size = %d\n", n_ins )); + FT_TRACE5(( " Instructions size = %hu\n", n_ins )); - /* check it */ - max_ins = loader->face->max_profile.maxSizeOfInstructions; - if ( n_ins > max_ins ) - { - /* don't trust `maxSizeOfInstructions'; */ - /* only do a rough safety check */ - if ( (FT_Int)n_ins > loader->byte_len ) - { - FT_TRACE1(( "TT_Process_Composite_Glyph:" - " too many instructions (%d) for glyph with length %d\n", - n_ins, loader->byte_len )); - return FT_THROW( Too_Many_Hints ); - } - - tmp = loader->exec->glyphSize; - error = Update_Max( loader->exec->memory, - &tmp, - sizeof ( FT_Byte ), - (void*)&loader->exec->glyphIns, - n_ins ); + if ( !n_ins ) + return FT_Err_Ok; - loader->exec->glyphSize = (FT_UShort)tmp; - if ( error ) - return error; + /* don't trust `maxSizeOfInstructions'; */ + /* only do a rough safety check */ + if ( n_ins > loader->byte_len ) + { + FT_TRACE1(( "TT_Process_Composite_Glyph:" + " too many instructions (%hu) for glyph with length %u\n", + n_ins, loader->byte_len )); + return FT_THROW( Too_Many_Hints ); } - else if ( n_ins == 0 ) - return FT_Err_Ok; - if ( FT_STREAM_READ( loader->exec->glyphIns, n_ins ) ) + if ( FT_QNEW_ARRAY( exec->glyphIns, n_ins ) || + FT_STREAM_READ( exec->glyphIns, n_ins ) ) return error; - loader->glyph->control_data = loader->exec->glyphIns; - loader->glyph->control_len = n_ins; + exec->glyphSize = n_ins; } #endif @@ -1336,11 +1270,9 @@ /* Some points are likely touched during execution of */ /* instructions on components. So let's untouch them. */ - for ( i = 0; i < loader->zone.n_points; i++ ) + for ( i = 0; i < loader->zone.n_points - 4U; i++ ) loader->zone.tags[i] &= ~FT_CURVE_TAG_TOUCH_BOTH; - loader->zone.n_points += 4; - return TT_Hint_Glyph( loader, 1 ); } @@ -1432,45 +1364,31 @@ static void tt_loader_set_pp( TT_Loader loader ) { - FT_Bool subpixel_hinting = 0; - FT_Bool grayscale = 0; - FT_Bool use_aw_2 = 0; - -#ifdef TT_CONFIG_OPTION_SUBPIXEL_HINTING - TT_Driver driver = (TT_Driver)FT_FACE_DRIVER( loader->face ); -#endif - - -#ifdef TT_SUPPORT_SUBPIXEL_HINTING_INFINALITY - if ( driver->interpreter_version == TT_INTERPRETER_VERSION_38 ) - { - subpixel_hinting = loader->exec ? loader->exec->subpixel_hinting - : 0; - grayscale = loader->exec ? loader->exec->grayscale - : 0; - } -#endif -#ifdef TT_SUPPORT_SUBPIXEL_HINTING_MINIMAL - if ( driver->interpreter_version == TT_INTERPRETER_VERSION_40 ) - { - subpixel_hinting = loader->exec ? loader->exec->subpixel_hinting_lean - : 0; - grayscale = loader->exec ? loader->exec->grayscale_cleartype - : 0; - } -#endif - - use_aw_2 = (FT_Bool)( subpixel_hinting && grayscale ); - loader->pp1.x = loader->bbox.xMin - loader->left_bearing; loader->pp1.y = 0; loader->pp2.x = loader->pp1.x + loader->advance; loader->pp2.y = 0; - loader->pp3.x = use_aw_2 ? loader->advance / 2 : 0; + loader->pp3.x = 0; loader->pp3.y = loader->bbox.yMax + loader->top_bearing; - loader->pp4.x = use_aw_2 ? loader->advance / 2 : 0; + loader->pp4.x = 0; loader->pp4.y = loader->pp3.y - loader->vadvance; + +#ifdef TT_SUPPORT_SUBPIXEL_HINTING_MINIMAL + { + TT_Driver driver = (TT_Driver)FT_FACE_DRIVER( loader->face ); + + + if ( driver->interpreter_version == TT_INTERPRETER_VERSION_40 && + loader->exec && + loader->exec->subpixel_hinting_lean && + loader->exec->grayscale_cleartype ) + { + loader->pp3.x = loader->advance / 2; + loader->pp4.x = loader->advance / 2; + } + } +#endif } @@ -1497,27 +1415,28 @@ } - /*************************************************************************/ - /* */ - /* <Function> */ - /* load_truetype_glyph */ - /* */ - /* <Description> */ - /* Loads a given truetype glyph. Handles composites and uses a */ - /* TT_Loader object. */ - /* */ + /************************************************************************** + * + * @Function: + * load_truetype_glyph + * + * @Description: + * Loads a given truetype glyph. Handles composites and uses a + * TT_Loader object. + */ static FT_Error load_truetype_glyph( TT_Loader loader, FT_UInt glyph_index, FT_UInt recurse_count, FT_Bool header_only ) { - FT_Error error = FT_Err_Ok; + FT_Error error = FT_Err_Ok; FT_Fixed x_scale, y_scale; FT_ULong offset; - TT_Face face = loader->face; - FT_GlyphLoader gloader = loader->gloader; - FT_Bool opened_frame = 0; + TT_Face face = loader->face; + FT_GlyphLoader gloader = loader->gloader; + + FT_Bool opened_frame = 0; #ifdef FT_CONFIG_OPTION_INCREMENTAL FT_StreamRec inc_stream; @@ -1550,15 +1469,15 @@ loader->glyph_index = glyph_index; - if ( ( loader->load_flags & FT_LOAD_NO_SCALE ) == 0 ) + if ( loader->load_flags & FT_LOAD_NO_SCALE ) { - x_scale = loader->size->metrics->x_scale; - y_scale = loader->size->metrics->y_scale; + x_scale = 0x10000L; + y_scale = 0x10000L; } else { - x_scale = 0x10000L; - y_scale = 0x10000L; + x_scale = loader->size->metrics->x_scale; + y_scale = loader->size->metrics->y_scale; } /* Set `offset' to the start of the glyph relative to the start of */ @@ -1585,16 +1504,21 @@ FT_ZERO( &inc_stream ); FT_Stream_OpenMemory( &inc_stream, glyph_data.pointer, - (FT_ULong)glyph_data.length ); + glyph_data.length ); loader->stream = &inc_stream; } else #endif /* FT_CONFIG_OPTION_INCREMENTAL */ + { + FT_ULong len; + - offset = tt_face_get_location( face, glyph_index, - (FT_UInt*)&loader->byte_len ); + offset = tt_face_get_location( FT_FACE( face ), glyph_index, &len ); + + loader->byte_len = (FT_UInt)len; + } if ( loader->byte_len > 0 ) { @@ -1613,49 +1537,45 @@ error = face->access_glyph_frame( loader, glyph_index, face->glyf_offset + offset, - (FT_UInt)loader->byte_len ); + loader->byte_len ); if ( error ) goto Exit; - opened_frame = 1; - /* read glyph header first */ error = face->read_glyph_header( loader ); - if ( error ) - goto Exit; - /* the metrics must be computed after loading the glyph header */ - /* since we need the glyph's `yMax' value in case the vertical */ - /* metrics must be emulated */ - error = tt_get_metrics( loader, glyph_index ); - if ( error ) - goto Exit; + face->forget_glyph_frame( loader ); - if ( header_only ) + if ( error ) goto Exit; } + /* a space glyph */ if ( loader->byte_len == 0 || loader->n_contours == 0 ) { loader->bbox.xMin = 0; loader->bbox.xMax = 0; loader->bbox.yMin = 0; loader->bbox.yMax = 0; + } - error = tt_get_metrics( loader, glyph_index ); - if ( error ) - goto Exit; - - if ( header_only ) - goto Exit; + /* the metrics must be computed after loading the glyph header */ + /* since we need the glyph's `yMax' value in case the vertical */ + /* metrics must be emulated */ + error = tt_get_metrics( loader, glyph_index ); + if ( error ) + goto Exit; - /* must initialize points before (possibly) overriding */ - /* glyph metrics from the incremental interface */ - tt_loader_set_pp( loader ); + if ( header_only ) + goto Exit; + if ( loader->byte_len == 0 || loader->n_contours == 0 ) + { #ifdef FT_CONFIG_OPTION_INCREMENTAL - tt_get_metrics_incr_overrides( loader, glyph_index ); + tt_get_metrics_incremental( loader, glyph_index ); #endif + tt_loader_set_pp( loader ); + #ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT @@ -1665,52 +1585,29 @@ /* a small outline structure with four elements for */ /* communication with `TT_Vary_Apply_Glyph_Deltas' */ FT_Vector points[4]; - char tags[4] = { 1, 1, 1, 1 }; - short contours[4] = { 0, 1, 2, 3 }; FT_Outline outline; + /* unrounded values */ + FT_Vector unrounded[4] = { {0, 0}, {0, 0}, {0, 0}, {0, 0} }; - points[0].x = loader->pp1.x; - points[0].y = loader->pp1.y; - points[1].x = loader->pp2.x; - points[1].y = loader->pp2.y; - points[2].x = loader->pp3.x; - points[2].y = loader->pp3.y; - points[3].x = loader->pp4.x; - points[3].y = loader->pp4.y; + points[0] = loader->pp1; + points[1] = loader->pp2; + points[2] = loader->pp3; + points[3] = loader->pp4; - outline.n_points = 4; - outline.n_contours = 4; + outline.n_points = 0; + outline.n_contours = 0; outline.points = points; - outline.tags = tags; - outline.contours = contours; + outline.tags = NULL; + outline.contours = NULL; /* this must be done before scaling */ - error = TT_Vary_Apply_Glyph_Deltas( loader->face, - glyph_index, + error = TT_Vary_Apply_Glyph_Deltas( loader, &outline, - (FT_UInt)outline.n_points ); + unrounded ); if ( error ) goto Exit; - - loader->pp1.x = points[0].x; - loader->pp1.y = points[0].y; - loader->pp2.x = points[1].x; - loader->pp2.y = points[1].y; - - loader->pp3.x = points[2].x; - loader->pp3.y = points[2].y; - loader->pp4.x = points[3].x; - loader->pp4.y = points[3].y; - - - /* recalculate linear horizontal and vertical advances */ - /* if we don't have HVAR and VVAR, respectively */ - if ( !( loader->face->variation_support & TT_FACE_FLAG_VAR_HADVANCE ) ) - loader->linear = loader->pp2.x - loader->pp1.x; - if ( !( loader->face->variation_support & TT_FACE_FLAG_VAR_VADVANCE ) ) - loader->vadvance = loader->pp4.x - loader->pp3.x; } #endif /* TT_CONFIG_OPTION_GX_VAR_SUPPORT */ @@ -1733,18 +1630,26 @@ goto Exit; } - /* must initialize phantom points before (possibly) overriding */ - /* glyph metrics from the incremental interface */ - tt_loader_set_pp( loader ); - #ifdef FT_CONFIG_OPTION_INCREMENTAL - tt_get_metrics_incr_overrides( loader, glyph_index ); + tt_get_metrics_incremental( loader, glyph_index ); #endif + tt_loader_set_pp( loader ); + /***********************************************************************/ /***********************************************************************/ /***********************************************************************/ + /* we now open a frame again, right after the glyph header */ + /* (which consists of 10 bytes) */ + error = face->access_glyph_frame( loader, glyph_index, + face->glyf_offset + offset + 10, + loader->byte_len - 10 ); + if ( error ) + goto Exit; + + opened_frame = 1; + /* if it is a simple glyph, load it */ if ( loader->n_contours > 0 ) @@ -1790,11 +1695,10 @@ * pointers with a width of at least 32 bits. */ - /* clear the nodes filled by sibling chains */ node = ft_list_get_node_at( &loader->composites, recurse_count ); for ( node2 = node; node2; node2 = node2->next ) - node2->data = (void*)FT_ULONG_MAX; + node2->data = (void*)-1; /* check whether we already have a composite glyph with this index */ if ( FT_List_Find( &loader->composites, @@ -1811,7 +1715,7 @@ else { - if ( FT_NEW( node ) ) + if ( FT_QNEW( node ) ) goto Exit; node->data = FT_UINT_TO_POINTER( glyph_index ); FT_List_Add( &loader->composites, node ); @@ -1840,28 +1744,22 @@ short i, limit; FT_SubGlyph subglyph; - FT_Outline outline; - FT_Vector* points = NULL; - char* tags = NULL; - short* contours = NULL; + FT_Outline outline = { 0, 0, NULL, NULL, NULL, 0 }; + FT_Vector* unrounded = NULL; limit = (short)gloader->current.num_subglyphs; /* construct an outline structure for */ /* communication with `TT_Vary_Apply_Glyph_Deltas' */ - outline.n_points = (short)( gloader->current.num_subglyphs + 4 ); - outline.n_contours = outline.n_points; - - outline.points = NULL; - outline.tags = NULL; - outline.contours = NULL; - - if ( FT_NEW_ARRAY( points, outline.n_points ) || - FT_NEW_ARRAY( tags, outline.n_points ) || - FT_NEW_ARRAY( contours, outline.n_points ) ) + if ( FT_QNEW_ARRAY( outline.points, limit + 4 ) || + FT_QNEW_ARRAY( outline.tags, limit ) || + FT_QNEW_ARRAY( outline.contours, limit ) || + FT_QNEW_ARRAY( unrounded, limit + 4 ) ) goto Exit1; + outline.n_contours = outline.n_points = limit; + subglyph = gloader->current.subglyphs; for ( i = 0; i < limit; i++, subglyph++ ) @@ -1869,46 +1767,22 @@ /* applying deltas for anchor points doesn't make sense, */ /* but we don't have to specially check this since */ /* unused delta values are zero anyways */ - points[i].x = subglyph->arg1; - points[i].y = subglyph->arg2; - tags[i] = 1; - contours[i] = i; + outline.points[i].x = subglyph->arg1; + outline.points[i].y = subglyph->arg2; + outline.tags[i] = ON_CURVE_POINT; + outline.contours[i] = i; } - points[i].x = loader->pp1.x; - points[i].y = loader->pp1.y; - tags[i] = 1; - contours[i] = i; - - i++; - points[i].x = loader->pp2.x; - points[i].y = loader->pp2.y; - tags[i] = 1; - contours[i] = i; - - i++; - points[i].x = loader->pp3.x; - points[i].y = loader->pp3.y; - tags[i] = 1; - contours[i] = i; - - i++; - points[i].x = loader->pp4.x; - points[i].y = loader->pp4.y; - tags[i] = 1; - contours[i] = i; - - outline.points = points; - outline.tags = tags; - outline.contours = contours; + outline.points[i++] = loader->pp1; + outline.points[i++] = loader->pp2; + outline.points[i++] = loader->pp3; + outline.points[i ] = loader->pp4; /* this call provides additional offsets */ /* for each component's translation */ - if ( FT_SET_ERROR( TT_Vary_Apply_Glyph_Deltas( - face, - glyph_index, - &outline, - (FT_UInt)outline.n_points ) ) ) + if ( FT_SET_ERROR( TT_Vary_Apply_Glyph_Deltas( loader, + &outline, + unrounded ) ) ) goto Exit1; subglyph = gloader->current.subglyphs; @@ -1917,32 +1791,16 @@ { if ( subglyph->flags & ARGS_ARE_XY_VALUES ) { - subglyph->arg1 = (FT_Int16)points[i].x; - subglyph->arg2 = (FT_Int16)points[i].y; + subglyph->arg1 = (FT_Int16)outline.points[i].x; + subglyph->arg2 = (FT_Int16)outline.points[i].y; } } - loader->pp1.x = points[i + 0].x; - loader->pp1.y = points[i + 0].y; - loader->pp2.x = points[i + 1].x; - loader->pp2.y = points[i + 1].y; - - loader->pp3.x = points[i + 2].x; - loader->pp3.y = points[i + 2].y; - loader->pp4.x = points[i + 3].x; - loader->pp4.y = points[i + 3].y; - - /* recalculate linear horizontal and vertical advances */ - /* if we don't have HVAR and VVAR, respectively */ - if ( !( face->variation_support & TT_FACE_FLAG_VAR_HADVANCE ) ) - loader->linear = loader->pp2.x - loader->pp1.x; - if ( !( face->variation_support & TT_FACE_FLAG_VAR_VADVANCE ) ) - loader->vadvance = loader->pp4.x - loader->pp3.x; - Exit1: FT_FREE( outline.points ); FT_FREE( outline.tags ); FT_FREE( outline.contours ); + FT_FREE( unrounded ); if ( error ) goto Exit; @@ -1988,7 +1846,7 @@ FT_UInt num_base_subgs = gloader->base.num_subglyphs; FT_Stream old_stream = loader->stream; - FT_Int old_byte_len = loader->byte_len; + FT_UInt old_byte_len = loader->byte_len; FT_GlyphLoader_Add( gloader ); @@ -2002,7 +1860,7 @@ FT_Int linear_vadvance; - /* Each time we call load_truetype_glyph in this loop, the */ + /* Each time we call `load_truetype_glyph' in this loop, the */ /* value of `gloader.base.subglyphs' can change due to table */ /* reallocations. We thus need to recompute the subglyph */ /* pointer on each iteration. */ @@ -2045,12 +1903,14 @@ if ( num_points == num_base_points ) continue; - /* gloader->base.outline consists of three parts: */ - /* 0 -(1)-> start_point -(2)-> num_base_points -(3)-> n_points. */ - /* */ - /* (1): exists from the beginning */ - /* (2): components that have been loaded so far */ - /* (3): the newly loaded component */ + /* gloader->base.outline consists of three parts: */ + /* */ + /* 0 ----> start_point ----> num_base_points ----> n_points */ + /* (1) (2) (3) */ + /* */ + /* (1) points that exist from the beginning */ + /* (2) component points that have been loaded so far */ + /* (3) points of the newly loaded component */ error = TT_Process_Composite_Component( loader, subglyph, start_point, @@ -2066,6 +1926,7 @@ loader->ins_pos = ins_pos; if ( IS_HINTED( loader->load_flags ) && #ifdef TT_USE_BYTECODE_INTERPRETER + subglyph && subglyph->flags & WE_HAVE_INSTR && #endif num_points > start_point ) @@ -2077,6 +1938,11 @@ goto Exit; } } + + /* retain the overlap flag */ + if ( gloader->base.num_subglyphs && + gloader->base.subglyphs[0].flags & OVERLAP_COMPOUND ) + gloader->base.outline.flags |= FT_OUTLINE_OVERLAP; } /***********************************************************************/ @@ -2105,16 +1971,11 @@ compute_glyph_metrics( TT_Loader loader, FT_UInt glyph_index ) { - TT_Face face = loader->face; -#if defined TT_SUPPORT_SUBPIXEL_HINTING_INFINALITY || \ - defined TT_SUPPORT_SUBPIXEL_HINTING_MINIMAL - TT_Driver driver = (TT_Driver)FT_FACE_DRIVER( face ); -#endif - + TT_Face face = loader->face; + TT_Size size = loader->size; + TT_GlyphSlot glyph = loader->glyph; FT_BBox bbox; FT_Fixed y_scale; - TT_GlyphSlot glyph = loader->glyph; - TT_Size size = loader->size; y_scale = 0x10000L; @@ -2132,53 +1993,10 @@ glyph->metrics.horiBearingX = bbox.xMin; glyph->metrics.horiBearingY = bbox.yMax; - glyph->metrics.horiAdvance = loader->pp2.x - loader->pp1.x; - - /* Adjust advance width to the value contained in the hdmx table */ - /* unless FT_LOAD_COMPUTE_METRICS is set or backward compatibility */ - /* mode of the v40 interpreter is active. See `ttinterp.h' for */ - /* details on backward compatibility mode. */ - if ( -#ifdef TT_SUPPORT_SUBPIXEL_HINTING_MINIMAL - !( driver->interpreter_version == TT_INTERPRETER_VERSION_40 && - ( loader->exec && loader->exec->backward_compatibility ) ) && -#endif - !face->postscript.isFixedPitch && - IS_HINTED( loader->load_flags ) && - !( loader->load_flags & FT_LOAD_COMPUTE_METRICS ) ) - { - FT_Byte* widthp; - - - widthp = tt_face_get_device_metrics( face, - size->metrics->x_ppem, - glyph_index ); - -#ifdef TT_SUPPORT_SUBPIXEL_HINTING_INFINALITY - - if ( driver->interpreter_version == TT_INTERPRETER_VERSION_38 ) - { - FT_Bool ignore_x_mode; - - - ignore_x_mode = FT_BOOL( FT_LOAD_TARGET_MODE( loader->load_flags ) != - FT_RENDER_MODE_MONO ); - - if ( widthp && - ( ( ignore_x_mode && loader->exec->compatible_widths ) || - !ignore_x_mode || - SPH_OPTION_BITMAP_WIDTHS ) ) - glyph->metrics.horiAdvance = *widthp * 64; - } - else - -#endif /* TT_SUPPORT_SUBPIXEL_HINTING_INFINALITY */ - - { - if ( widthp ) - glyph->metrics.horiAdvance = *widthp * 64; - } - } + if ( loader->widthp ) + glyph->metrics.horiAdvance = loader->widthp[glyph_index] * 64; + else + glyph->metrics.horiAdvance = SUB_LONG( loader->pp2.x, loader->pp1.x ); /* set glyph dimensions */ glyph->metrics.width = SUB_LONG( bbox.xMax, bbox.xMin ); @@ -2196,13 +2014,14 @@ if ( face->vertical_info && face->vertical.number_Of_VMetrics > 0 ) { - top = (FT_Short)FT_DivFix( loader->pp3.y - bbox.yMax, + top = (FT_Short)FT_DivFix( SUB_LONG( loader->pp3.y, bbox.yMax ), y_scale ); if ( loader->pp3.y <= loader->pp4.y ) advance = 0; else - advance = (FT_UShort)FT_DivFix( loader->pp3.y - loader->pp4.y, + advance = (FT_UShort)FT_DivFix( SUB_LONG( loader->pp3.y, + loader->pp4.y ), y_scale ); } else @@ -2276,13 +2095,13 @@ /* XXX: for now, we have no better algorithm for the lsb, but it */ /* should work fine. */ /* */ - glyph->metrics.vertBearingX = glyph->metrics.horiBearingX - - glyph->metrics.horiAdvance / 2; + glyph->metrics.vertBearingX = SUB_LONG( glyph->metrics.horiBearingX, + glyph->metrics.horiAdvance / 2 ); glyph->metrics.vertBearingY = top; glyph->metrics.vertAdvance = advance; } - return 0; + return FT_Err_Ok; } @@ -2294,17 +2113,13 @@ FT_UInt glyph_index, FT_Int32 load_flags ) { - TT_Face face; - SFNT_Service sfnt; - FT_Stream stream; + TT_Face face = (TT_Face)glyph->face; + SFNT_Service sfnt = (SFNT_Service)face->sfnt; + FT_Stream stream = face->root.stream; FT_Error error; TT_SBit_MetricsRec sbit_metrics; - face = (TT_Face)glyph->face; - sfnt = (SFNT_Service)face->sfnt; - stream = face->root.stream; - error = sfnt->load_sbit_image( face, size->strike_index, glyph_index, @@ -2355,22 +2170,18 @@ FT_Int32 load_flags, FT_Bool glyf_table_only ) { - TT_Face face; - FT_Stream stream; + TT_Face face = (TT_Face)glyph->face; + FT_Stream stream = face->root.stream; #ifdef TT_USE_BYTECODE_INTERPRETER FT_Error error; FT_Bool pedantic = FT_BOOL( load_flags & FT_LOAD_PEDANTIC ); -#if defined TT_SUPPORT_SUBPIXEL_HINTING_INFINALITY || \ - defined TT_SUPPORT_SUBPIXEL_HINTING_MINIMAL - TT_Driver driver = (TT_Driver)FT_FACE_DRIVER( (TT_Face)glyph->face ); +#ifdef TT_SUPPORT_SUBPIXEL_HINTING_MINIMAL + TT_Driver driver = (TT_Driver)FT_FACE_DRIVER( glyph->face ); #endif #endif - face = (TT_Face)glyph->face; - stream = face->root.stream; - FT_ZERO( loader ); #ifdef TT_USE_BYTECODE_INTERPRETER @@ -2385,20 +2196,6 @@ FT_Bool grayscale_cleartype; #endif -#ifdef TT_SUPPORT_SUBPIXEL_HINTING_INFINALITY - FT_Bool subpixel_hinting = FALSE; - -#if 0 - /* not used yet */ - FT_Bool compatible_widths; - FT_Bool symmetrical_smoothing; - FT_Bool bgr; - FT_Bool vertical_lcd; - FT_Bool subpixel_positioned; - FT_Bool gray_cleartype; -#endif -#endif /* TT_SUPPORT_SUBPIXEL_HINTING_INFINALITY */ - FT_Bool reexecute = FALSE; @@ -2418,6 +2215,9 @@ if ( !exec ) return FT_THROW( Could_Not_Find_Context ); + grayscale = FT_BOOL( FT_LOAD_TARGET_MODE( load_flags ) != + FT_RENDER_MODE_MONO ); + #ifdef TT_SUPPORT_SUBPIXEL_HINTING_MINIMAL if ( driver->interpreter_version == TT_INTERPRETER_VERSION_40 ) { @@ -2434,6 +2234,7 @@ FT_BOOL( subpixel_hinting_lean && ( load_flags & FT_LOAD_TARGET_LCD_V ) ); + grayscale = FT_BOOL( grayscale && !subpixel_hinting_lean ); } else { @@ -2443,111 +2244,11 @@ } #endif -#ifdef TT_SUPPORT_SUBPIXEL_HINTING_INFINALITY - - if ( driver->interpreter_version == TT_INTERPRETER_VERSION_38 ) - { - subpixel_hinting = FT_BOOL( ( FT_LOAD_TARGET_MODE( load_flags ) != - FT_RENDER_MODE_MONO ) && - SPH_OPTION_SET_SUBPIXEL ); - - if ( subpixel_hinting ) - grayscale = FALSE; - else if ( SPH_OPTION_SET_GRAYSCALE ) - { - grayscale = TRUE; - subpixel_hinting = FALSE; - } - else - grayscale = FALSE; - - if ( FT_IS_TRICKY( glyph->face ) ) - subpixel_hinting = FALSE; - - exec->ignore_x_mode = subpixel_hinting || grayscale; - exec->rasterizer_version = SPH_OPTION_SET_RASTERIZER_VERSION; - if ( exec->sph_tweak_flags & SPH_TWEAK_RASTERIZER_35 ) - exec->rasterizer_version = TT_INTERPRETER_VERSION_35; - -#if 1 - exec->compatible_widths = SPH_OPTION_SET_COMPATIBLE_WIDTHS; - exec->symmetrical_smoothing = TRUE; - exec->bgr = FALSE; - exec->vertical_lcd = FALSE; - exec->subpixel_positioned = TRUE; - exec->gray_cleartype = FALSE; -#else /* 0 */ - exec->compatible_widths = - FT_BOOL( FT_LOAD_TARGET_MODE( load_flags ) != - TT_LOAD_COMPATIBLE_WIDTHS ); - exec->symmetrical_smoothing = - FT_BOOL( FT_LOAD_TARGET_MODE( load_flags ) != - TT_LOAD_SYMMETRICAL_SMOOTHING ); - exec->bgr = - FT_BOOL( FT_LOAD_TARGET_MODE( load_flags ) != - TT_LOAD_BGR ); - exec->vertical_lcd = - FT_BOOL( FT_LOAD_TARGET_MODE( load_flags ) != - TT_LOAD_VERTICAL_LCD ); - exec->subpixel_positioned = - FT_BOOL( FT_LOAD_TARGET_MODE( load_flags ) != - TT_LOAD_SUBPIXEL_POSITIONED ); - exec->gray_cleartype = - FT_BOOL( FT_LOAD_TARGET_MODE( load_flags ) != - TT_LOAD_GRAY_CLEARTYPE ); -#endif /* 0 */ - - } - else - -#endif /* TT_SUPPORT_SUBPIXEL_HINTING_INFINALITY */ - -#ifdef TT_SUPPORT_SUBPIXEL_HINTING_MINIMAL - if ( driver->interpreter_version == TT_INTERPRETER_VERSION_40 ) - grayscale = FT_BOOL( !subpixel_hinting_lean && - FT_LOAD_TARGET_MODE( load_flags ) != - FT_RENDER_MODE_MONO ); - else -#endif - grayscale = FT_BOOL( FT_LOAD_TARGET_MODE( load_flags ) != - FT_RENDER_MODE_MONO ); - error = TT_Load_Context( exec, face, size ); if ( error ) return error; -#ifdef TT_SUPPORT_SUBPIXEL_HINTING_INFINALITY - - if ( driver->interpreter_version == TT_INTERPRETER_VERSION_38 ) - { - /* a change from mono to subpixel rendering (and vice versa) */ - /* requires a re-execution of the CVT program */ - if ( subpixel_hinting != exec->subpixel_hinting ) - { - FT_TRACE4(( "tt_loader_init: subpixel hinting change," - " re-executing `prep' table\n" )); - - exec->subpixel_hinting = subpixel_hinting; - reexecute = TRUE; - } - - /* a change from mono to grayscale rendering (and vice versa) */ - /* requires a re-execution of the CVT program */ - if ( grayscale != exec->grayscale ) - { - FT_TRACE4(( "tt_loader_init: grayscale hinting change," - " re-executing `prep' table\n" )); - - exec->grayscale = grayscale; - reexecute = TRUE; - } - } - else - -#endif /* TT_SUPPORT_SUBPIXEL_HINTING_INFINALITY */ - { - #ifdef TT_SUPPORT_SUBPIXEL_HINTING_MINIMAL if ( driver->interpreter_version == TT_INTERPRETER_VERSION_40 ) { @@ -2589,14 +2290,12 @@ if ( reexecute ) { - FT_UInt i; - - - for ( i = 0; i < size->cvt_size; i++ ) - size->cvt[i] = FT_MulFix( face->cvt[i], size->ttmetrics.scale ); error = tt_size_run_prep( size, pedantic ); if ( error ) return error; + error = TT_Load_Context( exec, face, size ); + if ( error ) + return error; } /* check whether the cvt program has disabled hinting */ @@ -2607,17 +2306,48 @@ if ( exec->GS.instruct_control & 2 ) exec->GS = tt_default_graphics_state; -#ifdef TT_SUPPORT_SUBPIXEL_HINTING_INFINALITY - /* check whether we have a font hinted for ClearType -- */ - /* note that this flag can also be modified in a glyph's bytecode */ - if ( driver->interpreter_version == TT_INTERPRETER_VERSION_38 && - exec->GS.instruct_control & 4 ) - exec->ignore_x_mode = 0; -#endif +#ifdef TT_SUPPORT_SUBPIXEL_HINTING_MINIMAL + /* + * Toggle backward compatibility according to what font wants, except + * when + * + * 1) we have a `tricky' font that heavily relies on the interpreter to + * render glyphs correctly, for example DFKai-SB, or + * 2) FT_RENDER_MODE_MONO (i.e, monochome rendering) is requested. + * + * In those cases, backward compatibility needs to be turned off to get + * correct rendering. The rendering is then completely up to the + * font's programming. + * + */ + if ( driver->interpreter_version == TT_INTERPRETER_VERSION_40 && + subpixel_hinting_lean && + !FT_IS_TRICKY( glyph->face ) ) + exec->backward_compatibility = !( exec->GS.instruct_control & 4 ); + else + exec->backward_compatibility = FALSE; +#endif /* TT_SUPPORT_SUBPIXEL_HINTING_MINIMAL */ exec->pedantic_hinting = FT_BOOL( load_flags & FT_LOAD_PEDANTIC ); loader->exec = exec; loader->instructions = exec->glyphIns; + + /* Use the hdmx table if any unless FT_LOAD_COMPUTE_METRICS */ + /* is set or backward compatibility mode of the v38 or v40 */ + /* interpreters is active. See `ttinterp.h' for details on */ + /* backward compatibility mode. */ + if ( IS_HINTED( loader->load_flags ) && + !( loader->load_flags & FT_LOAD_COMPUTE_METRICS ) && +#ifdef TT_SUPPORT_SUBPIXEL_HINTING_MINIMAL + !( driver->interpreter_version == TT_INTERPRETER_VERSION_40 && + exec->backward_compatibility ) && +#endif + !face->postscript.isFixedPitch ) + { + loader->widthp = size->widthp; + } + else + loader->widthp = NULL; } #endif /* TT_USE_BYTECODE_INTERPRETER */ @@ -2656,49 +2386,48 @@ } - /*************************************************************************/ - /* */ - /* <Function> */ - /* TT_Load_Glyph */ - /* */ - /* <Description> */ - /* A function used to load a single glyph within a given glyph slot, */ - /* for a given size. */ - /* */ - /* <Input> */ - /* glyph :: A handle to a 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. */ - /* */ - /* 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_Load_Glyph + * + * @Description: + * A function used to load a single glyph within a given glyph slot, + * for a given size. + * + * @InOut: + * glyph :: + * A handle to a target slot object where the glyph + * will be loaded. + * + * @Input: + * size :: + * A handle to the source face size at which the glyph + * must be scaled/loaded. + * + * 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. + */ FT_LOCAL_DEF( FT_Error ) TT_Load_Glyph( TT_Size size, TT_GlyphSlot glyph, FT_UInt glyph_index, FT_Int32 load_flags ) { + TT_Face face = (TT_Face)glyph->face; FT_Error error; TT_LoaderRec loader; -#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT -#define IS_DEFAULT_INSTANCE ( !( FT_IS_NAMED_INSTANCE( glyph->face ) || \ - FT_IS_VARIATION( glyph->face ) ) ) -#else -#define IS_DEFAULT_INSTANCE 1 -#endif - FT_TRACE1(( "TT_Load_Glyph: glyph index %d\n", glyph_index )); @@ -2707,7 +2436,7 @@ /* try to load embedded bitmap (if any) */ if ( size->strike_index != 0xFFFFFFFFUL && ( load_flags & FT_LOAD_NO_BITMAP ) == 0 && - IS_DEFAULT_INSTANCE ) + IS_DEFAULT_INSTANCE( glyph->face ) ) { FT_Fixed x_scale = size->root.metrics.x_scale; FT_Fixed y_scale = size->root.metrics.y_scale; @@ -2720,8 +2449,6 @@ /* if we have a bitmap-only font, return an empty glyph */ if ( !FT_IS_SCALABLE( glyph->face ) ) { - TT_Face face = (TT_Face)glyph->face; - FT_Short left_bearing = 0; FT_Short top_bearing = 0; @@ -2777,7 +2504,8 @@ } else { - if ( FT_IS_SCALABLE( glyph->face ) ) + if ( FT_IS_SCALABLE( glyph->face ) || + FT_HAS_SBIX( glyph->face ) ) { /* for the bbox we need the header only */ (void)tt_loader_init( &loader, size, glyph, load_flags, TRUE ); @@ -2786,6 +2514,35 @@ glyph->linearHoriAdvance = loader.linear; glyph->linearVertAdvance = loader.vadvance; + /* Bitmaps from the 'sbix' table need special treatment: */ + /* if there is a glyph contour, the bitmap origin must be */ + /* shifted to be relative to the lower left corner of the */ + /* glyph bounding box, also taking the left-side bearing */ + /* (or top bearing) into account. */ + if ( face->sbit_table_type == TT_SBIT_TABLE_TYPE_SBIX && + loader.n_contours > 0 ) + { + FT_Int bitmap_left; + FT_Int bitmap_top; + + + if ( load_flags & FT_LOAD_VERTICAL_LAYOUT ) + { + /* This is a guess, since Apple's CoreText engine doesn't */ + /* really do vertical typesetting. */ + bitmap_left = loader.bbox.xMin; + bitmap_top = loader.top_bearing; + } + else + { + bitmap_left = loader.left_bearing; + bitmap_top = loader.bbox.yMin; + } + + glyph->bitmap_left += FT_MulFix( bitmap_left, x_scale ) >> 6; + glyph->bitmap_top += FT_MulFix( bitmap_top, y_scale ) >> 6; + } + /* sanity checks: if `xxxAdvance' in the sbit metric */ /* structure isn't set, use `linearXXXAdvance' */ if ( !glyph->metrics.horiAdvance && glyph->linearHoriAdvance ) @@ -2800,6 +2557,12 @@ } } + if ( load_flags & FT_LOAD_SBITS_ONLY ) + { + error = FT_THROW( Invalid_Argument ); + goto Exit; + } + #endif /* TT_CONFIG_OPTION_EMBEDDED_BITMAPS */ /* if FT_LOAD_NO_SCALE is not set, `ttmetrics' must be valid */ @@ -2809,16 +2572,79 @@ goto Exit; } - if ( load_flags & FT_LOAD_SBITS_ONLY ) +#ifdef FT_CONFIG_OPTION_SVG + + /* check for OT-SVG */ + if ( ( load_flags & FT_LOAD_NO_SVG ) == 0 && + ( load_flags & FT_LOAD_COLOR ) && + face->svg ) + { + SFNT_Service sfnt = (SFNT_Service)face->sfnt; + + + FT_TRACE3(( "Trying to load SVG glyph\n" )); + + error = sfnt->load_svg_doc( glyph, glyph_index ); + if ( !error ) + { + FT_Fixed x_scale = size->root.metrics.x_scale; + FT_Fixed y_scale = size->root.metrics.y_scale; + + FT_Short leftBearing; + FT_Short topBearing; + FT_UShort advanceX; + FT_UShort advanceY; + + + FT_TRACE3(( "Successfully loaded SVG glyph\n" )); + + glyph->format = FT_GLYPH_FORMAT_SVG; + + sfnt->get_metrics( face, + FALSE, + glyph_index, + &leftBearing, + &advanceX ); + sfnt->get_metrics( face, + TRUE, + glyph_index, + &topBearing, + &advanceY ); + + glyph->linearHoriAdvance = advanceX; + glyph->linearVertAdvance = advanceY; + + glyph->metrics.horiAdvance = FT_MulFix( advanceX, x_scale ); + glyph->metrics.vertAdvance = FT_MulFix( advanceY, y_scale ); + + return error; + } + + FT_TRACE3(( "Failed to load SVG glyph\n" )); + } + + /* return immediately if we only want SVG glyphs */ + if ( load_flags & FT_LOAD_SVG_ONLY ) { error = FT_THROW( Invalid_Argument ); goto Exit; } +#endif /* FT_CONFIG_OPTION_SVG */ + error = tt_loader_init( &loader, size, glyph, load_flags, FALSE ); if ( error ) goto Exit; + /* done if we are only interested in the `hdmx` advance */ + if ( load_flags & FT_LOAD_ADVANCE_ONLY && + !( load_flags & FT_LOAD_VERTICAL_LAYOUT ) && + loader.widthp ) + { + glyph->metrics.horiAdvance = loader.widthp[glyph_index] * 64; + goto Done; + } + glyph->format = FT_GLYPH_FORMAT_OUTLINE; glyph->num_subglyphs = 0; glyph->outline.flags = 0; @@ -2849,6 +2675,9 @@ if ( IS_HINTED( load_flags ) ) { + glyph->control_data = loader.exec->glyphIns; + glyph->control_len = loader.exec->glyphSize; + if ( loader.exec->GS.scan_control ) { /* convert scan conversion mode to FT_OUTLINE_XXX flags */ @@ -2882,8 +2711,6 @@ error = compute_glyph_metrics( &loader, glyph_index ); } - tt_loader_done( &loader ); - /* Set the `high precision' bit flag. */ /* This is _critical_ to get correct output for monochrome */ /* TrueType glyphs at all sizes using the bytecode interpreter. */ @@ -2892,6 +2719,16 @@ size->metrics->y_ppem < 24 ) glyph->outline.flags |= FT_OUTLINE_HIGH_PRECISION; + FT_TRACE1(( " subglyphs = %u, contours = %hd, points = %hd," + " flags = 0x%.3x\n", + loader.gloader->base.num_subglyphs, + glyph->outline.n_contours, + glyph->outline.n_points, + glyph->outline.flags )); + + Done: + tt_loader_done( &loader ); + Exit: #ifdef FT_DEBUG_LEVEL_TRACE if ( error ) |