diff options
Diffstat (limited to 'Build/source/libs/freetype2/src/cid/cidgload.c')
-rw-r--r-- | Build/source/libs/freetype2/src/cid/cidgload.c | 327 |
1 files changed, 186 insertions, 141 deletions
diff --git a/Build/source/libs/freetype2/src/cid/cidgload.c b/Build/source/libs/freetype2/src/cid/cidgload.c index e7a70e8a48d..ed706ade7df 100644 --- a/Build/source/libs/freetype2/src/cid/cidgload.c +++ b/Build/source/libs/freetype2/src/cid/cidgload.c @@ -4,7 +4,7 @@ /* */ /* CID-keyed Type1 Glyph Loader (body). */ /* */ -/* Copyright 1996-2001 by */ +/* Copyright 1996-2001, 2002, 2003, 2004, 2005, 2006 by */ /* David Turner, Robert Wilhelm, and Werner Lemberg. */ /* */ /* This file is part of the FreeType project, and may only be used, */ @@ -37,81 +37,148 @@ FT_CALLBACK_DEF( FT_Error ) - cid_load_glyph( T1_Decoder* decoder, - FT_UInt glyph_index ) + cid_load_glyph( T1_Decoder decoder, + FT_UInt glyph_index ) { - CID_Face face = (CID_Face)decoder->builder.face; - CID_Info* cid = &face->cid; - FT_Byte* p; - FT_UInt entry_len = cid->fd_bytes + cid->gd_bytes; - FT_UInt fd_select; - FT_ULong off1, glyph_len; - FT_Stream stream = face->root.stream; - FT_Error error = 0; - - - /* read the CID font dict index and charstring offset from the CIDMap */ - if ( FILE_Seek( cid->data_offset + cid->cidmap_offset + - glyph_index * entry_len ) || - ACCESS_Frame( 2 * entry_len ) ) - goto Exit; - - p = (FT_Byte*)stream->cursor; - fd_select = (FT_UInt) cid_get_offset( &p, (FT_Byte)cid->fd_bytes ); - off1 = (FT_ULong)cid_get_offset( &p, (FT_Byte)cid->gd_bytes ); - p += cid->fd_bytes; - glyph_len = cid_get_offset( &p, (FT_Byte)cid->gd_bytes ) - off1; - - FORGET_Frame(); - - /* now, if the glyph is not empty, set up the subrs array, and parse */ - /* the charstrings */ - if ( glyph_len > 0 ) + CID_Face face = (CID_Face)decoder->builder.face; + CID_FaceInfo cid = &face->cid; + FT_Byte* p; + FT_UInt fd_select; + FT_Stream stream = face->cid_stream; + FT_Error error = 0; + FT_Byte* charstring = 0; + FT_Memory memory = face->root.memory; + FT_ULong glyph_length = 0; + PSAux_Service psaux = (PSAux_Service)face->psaux; + + +#ifdef FT_CONFIG_OPTION_INCREMENTAL + + /* For incremental fonts get the character data using */ + /* the callback function. */ + if ( face->root.internal->incremental_interface ) { - CID_FontDict* dict; - CID_Subrs* cid_subrs = face->subrs + fd_select; - FT_Byte* charstring; - FT_Memory memory = face->root.memory; + FT_Data glyph_data; - /* setup subrs */ + error = face->root.internal->incremental_interface->funcs->get_glyph_data( + face->root.internal->incremental_interface->object, + glyph_index, + &glyph_data ); + if ( error ) + goto Exit; + + p = (FT_Byte*)glyph_data.pointer; + fd_select = (FT_UInt)cid_get_offset( &p, (FT_Byte)cid->fd_bytes ); + + if ( glyph_data.length != 0 ) + { + glyph_length = glyph_data.length - cid->fd_bytes; + FT_ALLOC( charstring, glyph_length ); + if ( !error ) + ft_memcpy( charstring, glyph_data.pointer + cid->fd_bytes, + glyph_length ); + } + + face->root.internal->incremental_interface->funcs->free_glyph_data( + face->root.internal->incremental_interface->object, + &glyph_data ); + + if ( error ) + goto Exit; + } + + else + +#endif /* FT_CONFIG_OPTION_INCREMENTAL */ + + /* For ordinary fonts read the CID font dictionary index */ + /* and charstring offset from the CIDMap. */ + { + FT_UInt entry_len = cid->fd_bytes + cid->gd_bytes; + FT_ULong off1; + + + if ( FT_STREAM_SEEK( cid->data_offset + cid->cidmap_offset + + glyph_index * entry_len ) || + FT_FRAME_ENTER( 2 * entry_len ) ) + goto Exit; + + p = (FT_Byte*)stream->cursor; + fd_select = (FT_UInt) cid_get_offset( &p, (FT_Byte)cid->fd_bytes ); + off1 = (FT_ULong)cid_get_offset( &p, (FT_Byte)cid->gd_bytes ); + p += cid->fd_bytes; + glyph_length = cid_get_offset( &p, (FT_Byte)cid->gd_bytes ) - off1; + FT_FRAME_EXIT(); + + if ( glyph_length == 0 ) + goto Exit; + if ( FT_ALLOC( charstring, glyph_length ) ) + goto Exit; + if ( FT_STREAM_READ_AT( cid->data_offset + off1, + charstring, glyph_length ) ) + goto Exit; + } + + /* Now set up the subrs array and parse the charstrings. */ + { + CID_FaceDict dict; + CID_Subrs cid_subrs = face->subrs + fd_select; + FT_Int cs_offset; + + + /* Set up subrs */ decoder->num_subrs = cid_subrs->num_subrs; decoder->subrs = cid_subrs->code; decoder->subrs_len = 0; - /* setup font matrix */ + /* Set up font matrix */ dict = cid->font_dicts + fd_select; decoder->font_matrix = dict->font_matrix; decoder->font_offset = dict->font_offset; decoder->lenIV = dict->private_dict.lenIV; - /* the charstrings are encoded (stupid!) */ - /* load the charstrings, then execute it */ + /* Decode the charstring. */ - if ( ALLOC( charstring, glyph_len ) ) - goto Exit; + /* Adjustment for seed bytes. */ + cs_offset = ( decoder->lenIV >= 0 ? decoder->lenIV : 0 ); - if ( !FILE_Read_At( cid->data_offset + off1, charstring, glyph_len ) ) - { - FT_Int cs_offset; + /* Decrypt only if lenIV >= 0. */ + if ( decoder->lenIV >= 0 ) + psaux->t1_decrypt( charstring, glyph_length, 4330 ); + error = decoder->funcs.parse_charstrings( + decoder, charstring + cs_offset, + (FT_Int)glyph_length - cs_offset ); + } - /* Adjustment for seed bytes. */ - cs_offset = ( decoder->lenIV >= 0 ? decoder->lenIV : 0 ); - - /* Decrypt only if lenIV >= 0. */ - if ( decoder->lenIV >= 0 ) - cid_decrypt( charstring, glyph_len, 4330 ); + FT_FREE( charstring ); - error = decoder->funcs.parse_charstrings( decoder, - charstring + cs_offset, - glyph_len - cs_offset ); - } +#ifdef FT_CONFIG_OPTION_INCREMENTAL - FREE( charstring ); + /* Incremental fonts can optionally override the metrics. */ + if ( !error && + face->root.internal->incremental_interface && + face->root.internal->incremental_interface->funcs->get_glyph_metrics ) + { + FT_Incremental_MetricsRec metrics; + + + metrics.bearing_x = decoder->builder.left_bearing.x; + metrics.bearing_y = decoder->builder.left_bearing.y; + metrics.advance = decoder->builder.advance.x; + error = face->root.internal->incremental_interface->funcs->get_glyph_metrics( + face->root.internal->incremental_interface->object, + glyph_index, FALSE, &metrics ); + decoder->builder.left_bearing.x = metrics.bearing_x; + decoder->builder.left_bearing.y = metrics.bearing_y; + decoder->builder.advance.x = metrics.advance; + decoder->builder.advance.y = 0; } +#endif /* FT_CONFIG_OPTION_INCREMENTAL */ + Exit: return error; } @@ -138,15 +205,15 @@ /*************************************************************************/ - FT_LOCAL_DEF FT_Error - CID_Compute_Max_Advance( CID_Face face, - FT_Int* max_advance ) + FT_LOCAL_DEF( FT_Error ) + cid_face_compute_max_advance( CID_Face face, + FT_Int* max_advance ) { - FT_Error error; - T1_Decoder decoder; - FT_Int glyph_index; + FT_Error error; + T1_DecoderRec decoder; + FT_Int glyph_index; - PSAux_Interface* psaux = (PSAux_Interface*)face->psaux; + PSAux_Service psaux = (PSAux_Service)face->psaux; *max_advance = 0; @@ -185,60 +252,47 @@ #endif /* 0 */ - /*************************************************************************/ - /*************************************************************************/ - /*************************************************************************/ - /********** *********/ - /********** *********/ - /********** UNHINTED GLYPH LOADER *********/ - /********** *********/ - /********** The following code is in charge of loading a *********/ - /********** single outline. It completely ignores hinting *********/ - /********** and is used when FT_LOAD_NO_HINTING is set. *********/ - /********** *********/ - /*************************************************************************/ - /*************************************************************************/ - /*************************************************************************/ - - - FT_LOCAL_DEF FT_Error - CID_Load_Glyph( CID_GlyphSlot glyph, - CID_Size size, - FT_Int glyph_index, - FT_Int load_flags ) + FT_LOCAL_DEF( FT_Error ) + cid_slot_load_glyph( FT_GlyphSlot cidglyph, /* CID_GlyphSlot */ + FT_Size cidsize, /* CID_Size */ + FT_UInt glyph_index, + FT_Int32 load_flags ) { - FT_Error error; - T1_Decoder decoder; - CID_Face face = (CID_Face)glyph->root.face; - FT_Bool hinting; + CID_GlyphSlot glyph = (CID_GlyphSlot)cidglyph; + CID_Size size = (CID_Size)cidsize; + FT_Error error; + T1_DecoderRec decoder; + CID_Face face = (CID_Face)cidglyph->face; + FT_Bool hinting; - PSAux_Interface* psaux = (PSAux_Interface*)face->psaux; - FT_Matrix font_matrix; - FT_Vector font_offset; + PSAux_Service psaux = (PSAux_Service)face->psaux; + FT_Matrix font_matrix; + FT_Vector font_offset; if ( load_flags & FT_LOAD_NO_RECURSE ) load_flags |= FT_LOAD_NO_SCALE | FT_LOAD_NO_HINTING; - glyph->x_scale = size->root.metrics.x_scale; - glyph->y_scale = size->root.metrics.y_scale; + glyph->x_scale = cidsize->metrics.x_scale; + glyph->y_scale = cidsize->metrics.y_scale; - glyph->root.outline.n_points = 0; - glyph->root.outline.n_contours = 0; + cidglyph->outline.n_points = 0; + cidglyph->outline.n_contours = 0; hinting = FT_BOOL( ( load_flags & FT_LOAD_NO_SCALE ) == 0 && ( load_flags & FT_LOAD_NO_HINTING ) == 0 ); - glyph->root.format = ft_glyph_format_outline; + cidglyph->format = FT_GLYPH_FORMAT_OUTLINE; { error = psaux->t1_decoder_funcs->init( &decoder, - (FT_Face)face, - (FT_Size)size, - (FT_GlyphSlot)glyph, + cidglyph->face, + cidsize, + cidglyph, 0, /* glyph names -- XXX */ 0, /* blend == 0 */ hinting, + FT_LOAD_TARGET_MODE( load_flags ), cid_load_glyph ); /* set up the decoder */ @@ -259,18 +313,18 @@ /* bearing the yMax */ if ( !error ) { - glyph->root.outline.flags &= ft_outline_owner; - glyph->root.outline.flags |= ft_outline_reverse_fill; + cidglyph->outline.flags &= FT_OUTLINE_OWNER; + cidglyph->outline.flags |= FT_OUTLINE_REVERSE_FILL; /* for composite glyphs, return only left side bearing and */ /* advance width */ if ( load_flags & FT_LOAD_NO_RECURSE ) { - FT_Slot_Internal internal = glyph->root.internal; + FT_Slot_Internal internal = cidglyph->internal; - glyph->root.metrics.horiBearingX = decoder.builder.left_bearing.x; - glyph->root.metrics.horiAdvance = decoder.builder.advance.x; + cidglyph->metrics.horiBearingX = decoder.builder.left_bearing.x; + cidglyph->metrics.horiAdvance = decoder.builder.advance.x; internal->glyph_matrix = font_matrix; internal->glyph_delta = font_offset; @@ -279,32 +333,41 @@ else { FT_BBox cbox; - FT_Glyph_Metrics* metrics = &glyph->root.metrics; + FT_Glyph_Metrics* metrics = &cidglyph->metrics; + FT_Vector advance; /* copy the _unscaled_ advance width */ - metrics->horiAdvance = decoder.builder.advance.x; - glyph->root.linearHoriAdvance = decoder.builder.advance.x; - glyph->root.internal->glyph_transformed = 0; + metrics->horiAdvance = decoder.builder.advance.x; + cidglyph->linearHoriAdvance = decoder.builder.advance.x; + cidglyph->internal->glyph_transformed = 0; - /* make up vertical metrics */ - metrics->vertBearingX = 0; - metrics->vertBearingY = 0; - metrics->vertAdvance = 0; + /* make up vertical ones */ + metrics->vertAdvance = ( face->cid.font_bbox.yMax - + face->cid.font_bbox.yMin ) >> 16; + cidglyph->linearVertAdvance = metrics->vertAdvance; - glyph->root.linearVertAdvance = 0; - glyph->root.format = ft_glyph_format_outline; + cidglyph->format = FT_GLYPH_FORMAT_OUTLINE; - if ( size && size->root.metrics.y_ppem < 24 ) - glyph->root.outline.flags |= ft_outline_high_precision; + if ( size && cidsize->metrics.y_ppem < 24 ) + cidglyph->outline.flags |= FT_OUTLINE_HIGH_PRECISION; /* apply the font matrix */ - FT_Outline_Transform( &glyph->root.outline, &font_matrix ); + FT_Outline_Transform( &cidglyph->outline, &font_matrix ); - FT_Outline_Translate( &glyph->root.outline, + FT_Outline_Translate( &cidglyph->outline, font_offset.x, font_offset.y ); + advance.x = metrics->horiAdvance; + advance.y = 0; + FT_Vector_Transform( &advance, &font_matrix ); + metrics->horiAdvance = advance.x + font_offset.x; + advance.x = 0; + advance.y = metrics->vertAdvance; + FT_Vector_Transform( &advance, &font_matrix ); + metrics->vertAdvance = advance.y + font_offset.y; + if ( ( load_flags & FT_LOAD_NO_SCALE ) == 0 ) { /* scale the outline and the metrics */ @@ -316,51 +379,33 @@ /* First of all, scale the points */ - if ( !hinting ) + if ( !hinting || !decoder.builder.hints_funcs ) for ( n = cur->n_points; n > 0; n--, vec++ ) { vec->x = FT_MulFix( vec->x, x_scale ); vec->y = FT_MulFix( vec->y, y_scale ); } - FT_Outline_Get_CBox( &glyph->root.outline, &cbox ); - /* Then scale the metrics */ metrics->horiAdvance = FT_MulFix( metrics->horiAdvance, x_scale ); metrics->vertAdvance = FT_MulFix( metrics->vertAdvance, y_scale ); - - metrics->vertBearingX = FT_MulFix( metrics->vertBearingX, x_scale ); - metrics->vertBearingY = FT_MulFix( metrics->vertBearingY, y_scale ); - - if ( hinting ) - { - metrics->horiAdvance = ( metrics->horiAdvance + 32 ) & -64; - metrics->vertAdvance = ( metrics->vertAdvance + 32 ) & -64; - - metrics->vertBearingX = ( metrics->vertBearingX + 32 ) & -64; - metrics->vertBearingY = ( metrics->vertBearingY + 32 ) & -64; - } } /* compute the other metrics */ - FT_Outline_Get_CBox( &glyph->root.outline, &cbox ); - - /* grid fit the bounding box if necessary */ - if ( hinting ) - { - cbox.xMin &= -64; - cbox.yMin &= -64; - cbox.xMax = ( cbox.xMax + 63 ) & -64; - cbox.yMax = ( cbox.yMax + 63 ) & -64; - } + FT_Outline_Get_CBox( &cidglyph->outline, &cbox ); metrics->width = cbox.xMax - cbox.xMin; metrics->height = cbox.yMax - cbox.yMin; metrics->horiBearingX = cbox.xMin; metrics->horiBearingY = cbox.yMax; + + /* make up vertical ones */ + ft_synthesize_vertical_metrics( metrics, + metrics->vertAdvance ); } } + return error; } |