| /**************************************************************************** |
| * |
| * psft.c |
| * |
| * FreeType Glue Component to Adobe's Interpreter (body). |
| * |
| * Copyright 2013-2014 Adobe Systems Incorporated. |
| * |
| * This software, and all works of authorship, whether in source or |
| * object code form as indicated by the copyright notice(s) included |
| * herein (collectively, the "Work") is made available, and may only be |
| * used, modified, and distributed under the FreeType Project License, |
| * LICENSE.TXT. Additionally, subject to the terms and conditions of the |
| * FreeType Project License, each contributor to the Work hereby grants |
| * to any individual or legal entity exercising permissions granted by |
| * the FreeType Project License and this section (hereafter, "You" or |
| * "Your") a perpetual, worldwide, non-exclusive, no-charge, |
| * royalty-free, irrevocable (except as stated in this section) patent |
| * license to make, have made, use, offer to sell, sell, import, and |
| * otherwise transfer the Work, where such license applies only to those |
| * patent claims licensable by such contributor that are necessarily |
| * infringed by their contribution(s) alone or by combination of their |
| * contribution(s) with the Work to which such contribution(s) was |
| * submitted. If You institute patent litigation against any entity |
| * (including a cross-claim or counterclaim in a lawsuit) alleging that |
| * the Work or a contribution incorporated within the Work constitutes |
| * direct or contributory patent infringement, then any patent licenses |
| * granted to You under this License for that Work shall terminate as of |
| * the date such litigation is filed. |
| * |
| * By using, modifying, or distributing the Work you indicate that you |
| * have read and understood the terms and conditions of the |
| * FreeType Project License as well as those provided in this section, |
| * and you accept them fully. |
| * |
| */ |
| |
| |
| #include "psft.h" |
| #include <freetype/internal/ftdebug.h> |
| |
| #include "psfont.h" |
| #include "pserror.h" |
| #include "psobjs.h" |
| #include "cffdecode.h" |
| |
| #ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT |
| #include <freetype/ftmm.h> |
| #include <freetype/internal/services/svmm.h> |
| #endif |
| |
| #include <freetype/internal/services/svcfftl.h> |
| |
| |
| #define CF2_MAX_SIZE cf2_intToFixed( 2000 ) /* max ppem */ |
| |
| |
| /* |
| * This check should avoid most internal overflow cases. Clients should |
| * generally respond to `Glyph_Too_Big' by getting a glyph outline |
| * at EM size, scaling it and filling it as a graphics operation. |
| * |
| */ |
| static FT_Error |
| cf2_checkTransform( const CF2_Matrix* transform, |
| CF2_Int unitsPerEm ) |
| { |
| CF2_Fixed maxScale; |
| |
| |
| FT_ASSERT( unitsPerEm > 0 ); |
| |
| if ( transform->a <= 0 || transform->d <= 0 ) |
| return FT_THROW( Invalid_Size_Handle ); |
| |
| FT_ASSERT( transform->b == 0 && transform->c == 0 ); |
| FT_ASSERT( transform->tx == 0 && transform->ty == 0 ); |
| |
| if ( unitsPerEm > 0x7FFF ) |
| return FT_THROW( Glyph_Too_Big ); |
| |
| maxScale = FT_DivFix( CF2_MAX_SIZE, cf2_intToFixed( unitsPerEm ) ); |
| |
| if ( transform->a > maxScale || transform->d > maxScale ) |
| return FT_THROW( Glyph_Too_Big ); |
| |
| return FT_Err_Ok; |
| } |
| |
| |
| static void |
| cf2_setGlyphWidth( CF2_Outline outline, |
| CF2_Fixed width ) |
| { |
| PS_Decoder* decoder = outline->decoder; |
| |
| |
| FT_ASSERT( decoder ); |
| |
| if ( !decoder->builder.is_t1 ) |
| *decoder->glyph_width = cf2_fixedToInt( width ); |
| } |
| |
| |
| /* Clean up font instance. */ |
| static void |
| cf2_free_instance( void* ptr ) |
| { |
| CF2_Font font = (CF2_Font)ptr; |
| |
| |
| if ( font ) |
| { |
| FT_Memory memory = font->memory; |
| |
| |
| FT_FREE( font->blend.lastNDV ); |
| FT_FREE( font->blend.BV ); |
| } |
| } |
| |
| |
| /********************************************* |
| * |
| * functions for handling client outline; |
| * FreeType uses coordinates in 26.6 format |
| * |
| */ |
| |
| static void |
| cf2_builder_moveTo( CF2_OutlineCallbacks callbacks, |
| const CF2_CallbackParams params ) |
| { |
| /* downcast the object pointer */ |
| CF2_Outline outline = (CF2_Outline)callbacks; |
| PS_Builder* builder; |
| |
| (void)params; /* only used in debug mode */ |
| |
| |
| FT_ASSERT( outline && outline->decoder ); |
| FT_ASSERT( params->op == CF2_PathOpMoveTo ); |
| |
| builder = &outline->decoder->builder; |
| |
| /* note: two successive moves simply close the contour twice */ |
| ps_builder_close_contour( builder ); |
| builder->path_begun = 0; |
| } |
| |
| |
| static void |
| cf2_builder_lineTo( CF2_OutlineCallbacks callbacks, |
| const CF2_CallbackParams params ) |
| { |
| FT_Error error; |
| |
| /* downcast the object pointer */ |
| CF2_Outline outline = (CF2_Outline)callbacks; |
| PS_Builder* builder; |
| |
| |
| FT_ASSERT( outline && outline->decoder ); |
| FT_ASSERT( params->op == CF2_PathOpLineTo ); |
| |
| builder = &outline->decoder->builder; |
| |
| if ( !builder->path_begun ) |
| { |
| /* record the move before the line; also check points and set */ |
| /* `path_begun' */ |
| error = ps_builder_start_point( builder, |
| params->pt0.x, |
| params->pt0.y ); |
| if ( error ) |
| { |
| if ( !*callbacks->error ) |
| *callbacks->error = error; |
| return; |
| } |
| } |
| |
| /* `ps_builder_add_point1' includes a check_points call for one point */ |
| error = ps_builder_add_point1( builder, |
| params->pt1.x, |
| params->pt1.y ); |
| if ( error ) |
| { |
| if ( !*callbacks->error ) |
| *callbacks->error = error; |
| return; |
| } |
| } |
| |
| |
| static void |
| cf2_builder_cubeTo( CF2_OutlineCallbacks callbacks, |
| const CF2_CallbackParams params ) |
| { |
| FT_Error error; |
| |
| /* downcast the object pointer */ |
| CF2_Outline outline = (CF2_Outline)callbacks; |
| PS_Builder* builder; |
| |
| |
| FT_ASSERT( outline && outline->decoder ); |
| FT_ASSERT( params->op == CF2_PathOpCubeTo ); |
| |
| builder = &outline->decoder->builder; |
| |
| if ( !builder->path_begun ) |
| { |
| /* record the move before the line; also check points and set */ |
| /* `path_begun' */ |
| error = ps_builder_start_point( builder, |
| params->pt0.x, |
| params->pt0.y ); |
| if ( error ) |
| { |
| if ( !*callbacks->error ) |
| *callbacks->error = error; |
| return; |
| } |
| } |
| |
| /* prepare room for 3 points: 2 off-curve, 1 on-curve */ |
| error = ps_builder_check_points( builder, 3 ); |
| if ( error ) |
| { |
| if ( !*callbacks->error ) |
| *callbacks->error = error; |
| return; |
| } |
| |
| ps_builder_add_point( builder, |
| params->pt1.x, |
| params->pt1.y, 0 ); |
| ps_builder_add_point( builder, |
| params->pt2.x, |
| params->pt2.y, 0 ); |
| ps_builder_add_point( builder, |
| params->pt3.x, |
| params->pt3.y, 1 ); |
| } |
| |
| |
| static void |
| cf2_outline_init( CF2_Outline outline, |
| FT_Memory memory, |
| FT_Error* error ) |
| { |
| FT_ZERO( outline ); |
| |
| outline->root.memory = memory; |
| outline->root.error = error; |
| |
| outline->root.moveTo = cf2_builder_moveTo; |
| outline->root.lineTo = cf2_builder_lineTo; |
| outline->root.cubeTo = cf2_builder_cubeTo; |
| } |
| |
| |
| /* get scaling and hint flag from GlyphSlot */ |
| static void |
| cf2_getScaleAndHintFlag( PS_Decoder* decoder, |
| CF2_Fixed* x_scale, |
| CF2_Fixed* y_scale, |
| FT_Bool* hinted, |
| FT_Bool* scaled ) |
| { |
| FT_ASSERT( decoder && decoder->builder.glyph ); |
| |
| /* note: FreeType scale includes a factor of 64 */ |
| *hinted = decoder->builder.glyph->hint; |
| *scaled = decoder->builder.glyph->scaled; |
| |
| if ( *hinted ) |
| { |
| *x_scale = ADD_INT32( decoder->builder.glyph->x_scale, 32 ) / 64; |
| *y_scale = ADD_INT32( decoder->builder.glyph->y_scale, 32 ) / 64; |
| } |
| else |
| { |
| /* for unhinted outlines, `cff_slot_load' does the scaling, */ |
| /* thus render at `unity' scale */ |
| |
| *x_scale = 0x0400; /* 1/64 as 16.16 */ |
| *y_scale = 0x0400; |
| } |
| } |
| |
| |
| /* get units per em from `FT_Face' */ |
| /* TODO: should handle font matrix concatenation? */ |
| static FT_UShort |
| cf2_getUnitsPerEm( PS_Decoder* decoder ) |
| { |
| FT_ASSERT( decoder && decoder->builder.face ); |
| FT_ASSERT( decoder->builder.face->units_per_EM ); |
| |
| return decoder->builder.face->units_per_EM; |
| } |
| |
| |
| /* Main entry point: Render one glyph. */ |
| FT_LOCAL_DEF( FT_Error ) |
| cf2_decoder_parse_charstrings( PS_Decoder* decoder, |
| FT_Byte* charstring_base, |
| FT_ULong charstring_len ) |
| { |
| FT_Memory memory; |
| FT_Error error = FT_Err_Ok; |
| CF2_Font font; |
| |
| FT_Bool is_t1 = decoder->builder.is_t1; |
| |
| |
| FT_ASSERT( decoder && |
| ( is_t1 || decoder->cff ) ); |
| |
| if ( is_t1 && !decoder->current_subfont ) |
| { |
| FT_ERROR(( "cf2_decoder_parse_charstrings (Type 1): " |
| "SubFont missing. Use `t1_make_subfont' first\n" )); |
| return FT_THROW( Invalid_Table ); |
| } |
| |
| memory = decoder->builder.memory; |
| |
| /* CF2 data is saved here across glyphs */ |
| font = (CF2_Font)decoder->cf2_instance->data; |
| |
| /* on first glyph, allocate instance structure */ |
| if ( !decoder->cf2_instance->data ) |
| { |
| decoder->cf2_instance->finalizer = |
| (FT_Generic_Finalizer)cf2_free_instance; |
| |
| if ( FT_ALLOC( decoder->cf2_instance->data, |
| sizeof ( CF2_FontRec ) ) ) |
| return FT_THROW( Out_Of_Memory ); |
| |
| font = (CF2_Font)decoder->cf2_instance->data; |
| |
| font->memory = memory; |
| |
| if ( !is_t1 ) |
| font->cffload = (FT_Service_CFFLoad)decoder->cff->cffload; |
| |
| /* initialize a client outline, to be shared by each glyph rendered */ |
| cf2_outline_init( &font->outline, font->memory, &font->error ); |
| } |
| |
| /* save decoder; it is a stack variable and will be different on each */ |
| /* call */ |
| font->decoder = decoder; |
| font->outline.decoder = decoder; |
| |
| { |
| /* build parameters for Adobe engine */ |
| |
| PS_Builder* builder = &decoder->builder; |
| PS_Driver driver = (PS_Driver)FT_FACE_DRIVER( builder->face ); |
| |
| FT_Bool no_stem_darkening_driver = |
| driver->no_stem_darkening; |
| FT_Char no_stem_darkening_font = |
| builder->face->internal->no_stem_darkening; |
| |
| /* local error */ |
| FT_Error error2 = FT_Err_Ok; |
| CF2_BufferRec buf; |
| CF2_Matrix transform; |
| CF2_F16Dot16 glyphWidth; |
| |
| FT_Bool hinted; |
| FT_Bool scaled; |
| |
| |
| /* FreeType has already looked up the GID; convert to */ |
| /* `RegionBuffer', assuming that the input has been validated */ |
| FT_ASSERT( charstring_base + charstring_len >= charstring_base ); |
| |
| FT_ZERO( &buf ); |
| buf.start = |
| buf.ptr = charstring_base; |
| buf.end = FT_OFFSET( charstring_base, charstring_len ); |
| |
| FT_ZERO( &transform ); |
| |
| cf2_getScaleAndHintFlag( decoder, |
| &transform.a, |
| &transform.d, |
| &hinted, |
| &scaled ); |
| |
| if ( is_t1 ) |
| font->isCFF2 = FALSE; |
| else |
| { |
| /* copy isCFF2 boolean from TT_Face to CF2_Font */ |
| font->isCFF2 = ((TT_Face)builder->face)->is_cff2; |
| } |
| font->isT1 = is_t1; |
| |
| font->renderingFlags = 0; |
| if ( hinted ) |
| font->renderingFlags |= CF2_FlagsHinted; |
| if ( scaled && ( !no_stem_darkening_font || |
| ( no_stem_darkening_font < 0 && |
| !no_stem_darkening_driver ) ) ) |
| font->renderingFlags |= CF2_FlagsDarkened; |
| |
| font->darkenParams[0] = driver->darken_params[0]; |
| font->darkenParams[1] = driver->darken_params[1]; |
| font->darkenParams[2] = driver->darken_params[2]; |
| font->darkenParams[3] = driver->darken_params[3]; |
| font->darkenParams[4] = driver->darken_params[4]; |
| font->darkenParams[5] = driver->darken_params[5]; |
| font->darkenParams[6] = driver->darken_params[6]; |
| font->darkenParams[7] = driver->darken_params[7]; |
| |
| /* now get an outline for this glyph; */ |
| /* also get units per em to validate scale */ |
| font->unitsPerEm = (CF2_Int)cf2_getUnitsPerEm( decoder ); |
| |
| if ( scaled ) |
| { |
| error2 = cf2_checkTransform( &transform, font->unitsPerEm ); |
| if ( error2 ) |
| return error2; |
| } |
| |
| error2 = cf2_getGlyphOutline( font, &buf, &transform, &glyphWidth ); |
| if ( error2 ) |
| return FT_ERR( Invalid_File_Format ); |
| |
| cf2_setGlyphWidth( &font->outline, glyphWidth ); |
| |
| return FT_Err_Ok; |
| } |
| } |
| |
| |
| /* get pointer to current FreeType subfont (based on current glyphID) */ |
| FT_LOCAL_DEF( CFF_SubFont ) |
| cf2_getSubfont( PS_Decoder* decoder ) |
| { |
| FT_ASSERT( decoder && decoder->current_subfont ); |
| |
| return decoder->current_subfont; |
| } |
| |
| |
| /* get pointer to VStore structure */ |
| FT_LOCAL_DEF( CFF_VStore ) |
| cf2_getVStore( PS_Decoder* decoder ) |
| { |
| FT_ASSERT( decoder && decoder->cff ); |
| |
| return &decoder->cff->vstore; |
| } |
| |
| |
| /* get maxstack value from CFF2 Top DICT */ |
| FT_LOCAL_DEF( FT_UInt ) |
| cf2_getMaxstack( PS_Decoder* decoder ) |
| { |
| FT_ASSERT( decoder && decoder->cff ); |
| |
| return decoder->cff->top_font.font_dict.maxstack; |
| } |
| |
| |
| #ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT |
| /* Get normalized design vector for current render request; */ |
| /* return pointer and length. */ |
| /* */ |
| /* Note: Uses FT_Fixed not CF2_Fixed for the vector. */ |
| FT_LOCAL_DEF( FT_Error ) |
| cf2_getNormalizedVector( PS_Decoder* decoder, |
| CF2_UInt *len, |
| FT_Fixed* *vec ) |
| { |
| TT_Face face; |
| FT_Service_MultiMasters mm; |
| |
| |
| FT_ASSERT( decoder && decoder->builder.face ); |
| FT_ASSERT( vec && len ); |
| FT_ASSERT( !decoder->builder.is_t1 ); |
| |
| face = (TT_Face)decoder->builder.face; |
| mm = (FT_Service_MultiMasters)face->mm; |
| |
| return mm->get_var_blend( FT_FACE( face ), len, NULL, vec, NULL ); |
| } |
| #endif |
| |
| |
| /* get `y_ppem' from `CFF_Size' */ |
| FT_LOCAL_DEF( CF2_Fixed ) |
| cf2_getPpemY( PS_Decoder* decoder ) |
| { |
| FT_ASSERT( decoder && |
| decoder->builder.face && |
| decoder->builder.face->size ); |
| |
| /* |
| * Note that `y_ppem' can be zero if there wasn't a call to |
| * `FT_Set_Char_Size' or something similar. However, this isn't a |
| * problem since we come to this place in the code only if |
| * FT_LOAD_NO_SCALE is set (the other case gets caught by |
| * `cf2_checkTransform'). The ppem value is needed to compute the stem |
| * darkening, which is disabled for getting the unscaled outline. |
| * |
| */ |
| return cf2_intToFixed( |
| decoder->builder.face->size->metrics.y_ppem ); |
| } |
| |
| |
| /* get standard stem widths for the current subfont; */ |
| /* FreeType stores these as integer font units */ |
| /* (note: variable names seem swapped) */ |
| FT_LOCAL_DEF( CF2_Fixed ) |
| cf2_getStdVW( PS_Decoder* decoder ) |
| { |
| FT_ASSERT( decoder && decoder->current_subfont ); |
| |
| return cf2_intToFixed( |
| decoder->current_subfont->private_dict.standard_height ); |
| } |
| |
| |
| FT_LOCAL_DEF( CF2_Fixed ) |
| cf2_getStdHW( PS_Decoder* decoder ) |
| { |
| FT_ASSERT( decoder && decoder->current_subfont ); |
| |
| return cf2_intToFixed( |
| decoder->current_subfont->private_dict.standard_width ); |
| } |
| |
| |
| /* note: FreeType stores 1000 times the actual value for `BlueScale' */ |
| FT_LOCAL_DEF( void ) |
| cf2_getBlueMetrics( PS_Decoder* decoder, |
| CF2_Fixed* blueScale, |
| CF2_Fixed* blueShift, |
| CF2_Fixed* blueFuzz ) |
| { |
| FT_ASSERT( decoder && decoder->current_subfont ); |
| |
| *blueScale = FT_DivFix( |
| decoder->current_subfont->private_dict.blue_scale, |
| cf2_intToFixed( 1000 ) ); |
| *blueShift = cf2_intToFixed( |
| decoder->current_subfont->private_dict.blue_shift ); |
| *blueFuzz = cf2_intToFixed( |
| decoder->current_subfont->private_dict.blue_fuzz ); |
| } |
| |
| |
| /* get blue values counts and arrays; the FreeType parser has validated */ |
| /* the counts and verified that each is an even number */ |
| FT_LOCAL_DEF( void ) |
| cf2_getBlueValues( PS_Decoder* decoder, |
| size_t* count, |
| FT_Pos* *data ) |
| { |
| FT_ASSERT( decoder && decoder->current_subfont ); |
| |
| *count = decoder->current_subfont->private_dict.num_blue_values; |
| *data = (FT_Pos*) |
| &decoder->current_subfont->private_dict.blue_values; |
| } |
| |
| |
| FT_LOCAL_DEF( void ) |
| cf2_getOtherBlues( PS_Decoder* decoder, |
| size_t* count, |
| FT_Pos* *data ) |
| { |
| FT_ASSERT( decoder && decoder->current_subfont ); |
| |
| *count = decoder->current_subfont->private_dict.num_other_blues; |
| *data = (FT_Pos*) |
| &decoder->current_subfont->private_dict.other_blues; |
| } |
| |
| |
| FT_LOCAL_DEF( void ) |
| cf2_getFamilyBlues( PS_Decoder* decoder, |
| size_t* count, |
| FT_Pos* *data ) |
| { |
| FT_ASSERT( decoder && decoder->current_subfont ); |
| |
| *count = decoder->current_subfont->private_dict.num_family_blues; |
| *data = (FT_Pos*) |
| &decoder->current_subfont->private_dict.family_blues; |
| } |
| |
| |
| FT_LOCAL_DEF( void ) |
| cf2_getFamilyOtherBlues( PS_Decoder* decoder, |
| size_t* count, |
| FT_Pos* *data ) |
| { |
| FT_ASSERT( decoder && decoder->current_subfont ); |
| |
| *count = decoder->current_subfont->private_dict.num_family_other_blues; |
| *data = (FT_Pos*) |
| &decoder->current_subfont->private_dict.family_other_blues; |
| } |
| |
| |
| FT_LOCAL_DEF( CF2_Int ) |
| cf2_getLanguageGroup( PS_Decoder* decoder ) |
| { |
| FT_ASSERT( decoder && decoder->current_subfont ); |
| |
| return decoder->current_subfont->private_dict.language_group; |
| } |
| |
| |
| /* convert unbiased subroutine index to `CF2_Buffer' and */ |
| /* return 0 on success */ |
| FT_LOCAL_DEF( CF2_Int ) |
| cf2_initGlobalRegionBuffer( PS_Decoder* decoder, |
| CF2_Int subrNum, |
| CF2_Buffer buf ) |
| { |
| CF2_UInt idx; |
| |
| |
| FT_ASSERT( decoder ); |
| |
| FT_ZERO( buf ); |
| |
| idx = (CF2_UInt)( subrNum + decoder->globals_bias ); |
| if ( idx >= decoder->num_globals ) |
| return TRUE; /* error */ |
| |
| FT_ASSERT( decoder->globals ); |
| |
| buf->start = |
| buf->ptr = decoder->globals[idx]; |
| buf->end = decoder->globals[idx + 1]; |
| |
| return FALSE; /* success */ |
| } |
| |
| |
| /* convert AdobeStandardEncoding code to CF2_Buffer; */ |
| /* used for seac component */ |
| FT_LOCAL_DEF( FT_Error ) |
| cf2_getSeacComponent( PS_Decoder* decoder, |
| CF2_Int code, |
| CF2_Buffer buf ) |
| { |
| CF2_Int gid; |
| FT_Byte* charstring; |
| FT_ULong len; |
| FT_Error error; |
| |
| |
| FT_ASSERT( decoder ); |
| FT_ASSERT( !decoder->builder.is_t1 ); |
| |
| FT_ZERO( buf ); |
| |
| #ifdef FT_CONFIG_OPTION_INCREMENTAL |
| /* Incremental fonts don't necessarily have valid charsets. */ |
| /* They use the character code, not the glyph index, in this case. */ |
| if ( decoder->builder.face->internal->incremental_interface ) |
| gid = code; |
| else |
| #endif /* FT_CONFIG_OPTION_INCREMENTAL */ |
| { |
| gid = cff_lookup_glyph_by_stdcharcode( decoder->cff, code ); |
| if ( gid < 0 ) |
| return FT_THROW( Invalid_Glyph_Format ); |
| } |
| |
| error = decoder->get_glyph_callback( (TT_Face)decoder->builder.face, |
| (CF2_UInt)gid, |
| &charstring, |
| &len ); |
| /* TODO: for now, just pass the FreeType error through */ |
| if ( error ) |
| return error; |
| |
| /* assume input has been validated */ |
| FT_ASSERT( charstring + len >= charstring ); |
| |
| buf->start = charstring; |
| buf->end = FT_OFFSET( charstring, len ); |
| buf->ptr = buf->start; |
| |
| return FT_Err_Ok; |
| } |
| |
| |
| FT_LOCAL_DEF( void ) |
| cf2_freeSeacComponent( PS_Decoder* decoder, |
| CF2_Buffer buf ) |
| { |
| FT_ASSERT( decoder ); |
| FT_ASSERT( !decoder->builder.is_t1 ); |
| |
| decoder->free_glyph_callback( (TT_Face)decoder->builder.face, |
| (FT_Byte**)&buf->start, |
| (FT_ULong)( buf->end - buf->start ) ); |
| } |
| |
| |
| FT_LOCAL_DEF( FT_Error ) |
| cf2_getT1SeacComponent( PS_Decoder* decoder, |
| FT_UInt glyph_index, |
| CF2_Buffer buf ) |
| { |
| FT_Data glyph_data; |
| FT_Error error = FT_Err_Ok; |
| T1_Face face = (T1_Face)decoder->builder.face; |
| T1_Font type1 = &face->type1; |
| |
| #ifdef FT_CONFIG_OPTION_INCREMENTAL |
| FT_Incremental_InterfaceRec *inc = |
| face->root.internal->incremental_interface; |
| |
| |
| /* For incremental fonts get the character data using the */ |
| /* callback function. */ |
| if ( inc ) |
| error = inc->funcs->get_glyph_data( inc->object, |
| glyph_index, &glyph_data ); |
| else |
| #endif |
| /* For ordinary fonts get the character data stored in the face record. */ |
| { |
| glyph_data.pointer = type1->charstrings[glyph_index]; |
| glyph_data.length = (FT_Int)type1->charstrings_len[glyph_index]; |
| } |
| |
| if ( !error ) |
| { |
| FT_Byte* charstring_base = (FT_Byte*)glyph_data.pointer; |
| FT_ULong charstring_len = (FT_ULong)glyph_data.length; |
| |
| |
| FT_ASSERT( charstring_base + charstring_len >= charstring_base ); |
| |
| FT_ZERO( buf ); |
| buf->start = |
| buf->ptr = charstring_base; |
| buf->end = charstring_base + charstring_len; |
| } |
| |
| return error; |
| } |
| |
| |
| FT_LOCAL_DEF( void ) |
| cf2_freeT1SeacComponent( PS_Decoder* decoder, |
| CF2_Buffer buf ) |
| { |
| #ifdef FT_CONFIG_OPTION_INCREMENTAL |
| |
| T1_Face face; |
| FT_Data data; |
| |
| |
| FT_ASSERT( decoder ); |
| |
| face = (T1_Face)decoder->builder.face; |
| |
| data.pointer = buf->start; |
| data.length = (FT_Int)( buf->end - buf->start ); |
| |
| if ( face->root.internal->incremental_interface ) |
| face->root.internal->incremental_interface->funcs->free_glyph_data( |
| face->root.internal->incremental_interface->object, |
| &data ); |
| |
| #else /* !FT_CONFIG_OPTION_INCREMENTAL */ |
| |
| FT_UNUSED( decoder ); |
| FT_UNUSED( buf ); |
| |
| #endif /* !FT_CONFIG_OPTION_INCREMENTAL */ |
| } |
| |
| |
| FT_LOCAL_DEF( CF2_Int ) |
| cf2_initLocalRegionBuffer( PS_Decoder* decoder, |
| CF2_Int subrNum, |
| CF2_Buffer buf ) |
| { |
| CF2_UInt idx; |
| |
| |
| FT_ASSERT( decoder ); |
| |
| FT_ZERO( buf ); |
| |
| idx = (CF2_UInt)( subrNum + decoder->locals_bias ); |
| if ( idx >= decoder->num_locals ) |
| return TRUE; /* error */ |
| |
| FT_ASSERT( decoder->locals ); |
| |
| buf->start = decoder->locals[idx]; |
| |
| if ( decoder->builder.is_t1 ) |
| { |
| /* The Type 1 driver stores subroutines without the seed bytes. */ |
| /* The CID driver stores subroutines with seed bytes. This */ |
| /* case is taken care of when decoder->subrs_len == 0. */ |
| if ( decoder->locals_len ) |
| buf->end = FT_OFFSET( buf->start, decoder->locals_len[idx] ); |
| else |
| { |
| /* We are using subroutines from a CID font. We must adjust */ |
| /* for the seed bytes. */ |
| buf->start += ( decoder->lenIV >= 0 ? decoder->lenIV : 0 ); |
| buf->end = decoder->locals[idx + 1]; |
| } |
| |
| if ( !buf->start ) |
| { |
| FT_ERROR(( "cf2_initLocalRegionBuffer (Type 1 mode):" |
| " invoking empty subrs\n" )); |
| } |
| } |
| else |
| { |
| buf->end = decoder->locals[idx + 1]; |
| } |
| |
| buf->ptr = buf->start; |
| |
| return FALSE; /* success */ |
| } |
| |
| |
| FT_LOCAL_DEF( CF2_Fixed ) |
| cf2_getDefaultWidthX( PS_Decoder* decoder ) |
| { |
| FT_ASSERT( decoder && decoder->current_subfont ); |
| |
| return cf2_intToFixed( |
| decoder->current_subfont->private_dict.default_width ); |
| } |
| |
| |
| FT_LOCAL_DEF( CF2_Fixed ) |
| cf2_getNominalWidthX( PS_Decoder* decoder ) |
| { |
| FT_ASSERT( decoder && decoder->current_subfont ); |
| |
| return cf2_intToFixed( |
| decoder->current_subfont->private_dict.nominal_width ); |
| } |
| |
| |
| FT_LOCAL_DEF( void ) |
| cf2_outline_reset( CF2_Outline outline ) |
| { |
| PS_Decoder* decoder = outline->decoder; |
| |
| |
| FT_ASSERT( decoder ); |
| |
| outline->root.windingMomentum = 0; |
| |
| FT_GlyphLoader_Rewind( decoder->builder.loader ); |
| } |
| |
| |
| FT_LOCAL_DEF( void ) |
| cf2_outline_close( CF2_Outline outline ) |
| { |
| PS_Decoder* decoder = outline->decoder; |
| |
| |
| FT_ASSERT( decoder ); |
| |
| ps_builder_close_contour( &decoder->builder ); |
| |
| FT_GlyphLoader_Add( decoder->builder.loader ); |
| } |
| |
| |
| /* END */ |
