diff options
Diffstat (limited to 'core/src/fxge/fx_freetype/fxft2.5.01/src/cff/cf2ft.c')
-rw-r--r-- | core/src/fxge/fx_freetype/fxft2.5.01/src/cff/cf2ft.c | 648 |
1 files changed, 0 insertions, 648 deletions
diff --git a/core/src/fxge/fx_freetype/fxft2.5.01/src/cff/cf2ft.c b/core/src/fxge/fx_freetype/fxft2.5.01/src/cff/cf2ft.c deleted file mode 100644 index 7f82b247af..0000000000 --- a/core/src/fxge/fx_freetype/fxft2.5.01/src/cff/cf2ft.c +++ /dev/null @@ -1,648 +0,0 @@ -/***************************************************************************/ -/* */ -/* cf2ft.c */ -/* */ -/* FreeType Glue Component to Adobe's Interpreter (body). */ -/* */ -/* Copyright 2013 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 "cf2ft.h" -#include "../../include/freetype/internal/ftdebug.h" - -#include "cf2font.h" -#include "cf2error.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 ); - - FT_ASSERT( transform->a > 0 && transform->d > 0 ); - 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 ) - { - CFF_Decoder* decoder = outline->decoder; - - - FT_ASSERT( decoder ); - - 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; - - - (void)memory; - } - } - - - /********************************************/ - /* */ - /* 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; - CFF_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 */ - cff_builder_close_contour( builder ); - builder->path_begun = 0; - } - - - static void - cf2_builder_lineTo( CF2_OutlineCallbacks callbacks, - const CF2_CallbackParams params ) - { - /* downcast the object pointer */ - CF2_Outline outline = (CF2_Outline)callbacks; - CFF_Builder* builder; - FT_Error error; - - - 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 = cff_builder_start_point(builder, - params->pt0.x, - params->pt0.y ); - if (callbacks && callbacks->error) *callbacks->error = error; - if (error) return; - } - - /* `cff_builder_add_point1' includes a check_points call for one point */ - error = cff_builder_add_point1(builder, - params->pt1.x, - params->pt1.y ); - if (callbacks && callbacks->error) *callbacks->error = error; - } - - - static void - cf2_builder_cubeTo( CF2_OutlineCallbacks callbacks, - const CF2_CallbackParams params ) - { - /* downcast the object pointer */ - CF2_Outline outline = (CF2_Outline)callbacks; - CFF_Builder* builder; - FT_Error error; - - - 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 = cff_builder_start_point( builder, - params->pt0.x, - params->pt0.y ); - if (callbacks && callbacks->error) *callbacks->error = error; - if (error) return; - } - - /* prepare room for 3 points: 2 off-curve, 1 on-curve */ - error = cff_check_points( builder, 3 ); - if (callbacks && callbacks->error) *callbacks->error = error; - if (error) return; - - cff_builder_add_point( builder, - params->pt1.x, - params->pt1.y, 0 ); - cff_builder_add_point( builder, - params->pt2.x, - params->pt2.y, 0 ); - cff_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_MEM_ZERO( outline, sizeof ( CF2_OutlineRec ) ); - - 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( CFF_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 = FT_DivFix( decoder->builder.glyph->x_scale, - cf2_intToFixed( 64 ) ); - *y_scale = FT_DivFix( decoder->builder.glyph->y_scale, - cf2_intToFixed( 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( CFF_Decoder* decoder ) - { - FT_ASSERT( decoder && decoder->builder.face ); - FT_ASSERT( decoder->builder.face->root.units_per_EM ); - - return decoder->builder.face->root.units_per_EM; - } - - - /* Main entry point: Render one glyph. */ - FT_LOCAL_DEF( FT_Error ) - cf2_decoder_parse_charstrings( CFF_Decoder* decoder, - FT_Byte* charstring_base, - FT_ULong charstring_len ) - { - FT_Memory memory; - FT_Error error = FT_Err_Ok; - CF2_Font font; - - - FT_ASSERT( decoder && decoder->cff ); - - memory = decoder->builder.memory; - - /* CF2 data is saved here across glyphs */ - font = (CF2_Font)decoder->cff->cf2_instance.data; - - /* on first glyph, allocate instance structure */ - if ( decoder->cff->cf2_instance.data == NULL ) - { - decoder->cff->cf2_instance.finalizer = - (FT_Generic_Finalizer)cf2_free_instance; - - if ( FT_ALLOC( decoder->cff->cf2_instance.data, - sizeof ( CF2_FontRec ) ) ) - return FT_THROW( Out_Of_Memory ); - - font = (CF2_Font)decoder->cff->cf2_instance.data; - - font->memory = memory; - - /* 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 */ - - CFF_Builder* builder = &decoder->builder; - CFF_Driver driver = (CFF_Driver)FT_FACE_DRIVER( builder->face ); - - /* 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 = charstring_base + charstring_len; - - FT_ZERO( &transform ); - - cf2_getScaleAndHintFlag( decoder, - &transform.a, - &transform.d, - &hinted, - &scaled ); - - font->renderingFlags = 0; - if ( hinted ) - font->renderingFlags |= CF2_FlagsHinted; - if ( scaled && !driver->no_stem_darkening ) - font->renderingFlags |= CF2_FlagsDarkened; - - /* now get an outline for this glyph; */ - /* also get units per em to validate scale */ - font->unitsPerEm = (CF2_Int)cf2_getUnitsPerEm( decoder ); - - 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( CFF_Decoder* decoder ) - { - FT_ASSERT( decoder && decoder->current_subfont ); - - return decoder->current_subfont; - } - - - /* get `y_ppem' from `CFF_Size' */ - FT_LOCAL_DEF( CF2_Fixed ) - cf2_getPpemY( CFF_Decoder* decoder ) - { - FT_ASSERT( decoder && - decoder->builder.face && - decoder->builder.face->root.size ); - FT_ASSERT( decoder->builder.face->root.size->metrics.y_ppem ); - - return cf2_intToFixed( - decoder->builder.face->root.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( CFF_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( CFF_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( CFF_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( CFF_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( CFF_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( CFF_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( CFF_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( CFF_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( CFF_Decoder* decoder, - CF2_UInt idx, - CF2_Buffer buf ) - { - FT_ASSERT( decoder && decoder->globals ); - - FT_ZERO( buf ); - - idx += decoder->globals_bias; - if ( idx >= decoder->num_globals ) - return TRUE; /* error */ - - 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( CFF_Decoder* decoder, - CF2_UInt code, - CF2_Buffer buf ) - { - CF2_Int gid; - FT_Byte* charstring; - FT_ULong len; - FT_Error error; - - - FT_ASSERT( decoder ); - - FT_ZERO( buf ); - - gid = cff_lookup_glyph_by_stdcharcode( decoder->cff, code ); - if ( gid < 0 ) - return FT_THROW( Invalid_Glyph_Format ); - - error = cff_get_glyph_data( decoder->builder.face, - 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 = charstring + len; - buf->ptr = buf->start; - - return FT_Err_Ok; - } - - - FT_LOCAL_DEF( void ) - cf2_freeSeacComponent( CFF_Decoder* decoder, - CF2_Buffer buf ) - { - FT_ASSERT( decoder ); - - cff_free_glyph_data( decoder->builder.face, - (FT_Byte**)&buf->start, - (FT_ULong)( buf->end - buf->start ) ); - } - - - FT_LOCAL_DEF( CF2_Int ) - cf2_initLocalRegionBuffer( CFF_Decoder* decoder, - CF2_UInt idx, - CF2_Buffer buf ) - { - FT_ASSERT( decoder && decoder->locals ); - - FT_ZERO( buf ); - - idx += decoder->locals_bias; - if ( idx >= decoder->num_locals ) - return TRUE; /* error */ - - buf->start = - buf->ptr = decoder->locals[idx]; - buf->end = decoder->locals[idx + 1]; - - return FALSE; /* success */ - } - - - FT_LOCAL_DEF( CF2_Fixed ) - cf2_getDefaultWidthX( CFF_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( CFF_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 ) - { - CFF_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 ) - { - CFF_Decoder* decoder = outline->decoder; - - - FT_ASSERT( decoder ); - - cff_builder_close_contour( &decoder->builder ); - - FT_GlyphLoader_Add( decoder->builder.loader ); - } - - -/* END */ |