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@ -4,7 +4,7 @@ |
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/* */ |
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/* TrueType Glyph Loader (body). */ |
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/* */ |
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/* Copyright 1996-2001 by */ |
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/* Copyright 1996-2001, 2002 by */ |
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/* David Turner, Robert Wilhelm, and Werner Lemberg. */ |
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/* */ |
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/* This file is part of the FreeType project, and may only be used, */ |
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@ -87,8 +87,8 @@ |
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FT_Short* bearing, |
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FT_UShort* advance ) |
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{ |
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TT_LongMetrics longs_m; |
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FT_UShort k = header->number_Of_HMetrics; |
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TT_LongMetrics longs_m; |
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FT_UShort k = header->number_Of_HMetrics; |
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if ( idx < (FT_UInt)k ) |
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@ -127,8 +127,8 @@ |
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/*************************************************************************/ |
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/* */ |
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/* Returns the advance width table for a given pixel size if it is */ |
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/* found in the font's `hdmx' table (if any). */ |
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/* Returns the advance width table for a given pixel size if it is found */ |
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/* in the font's `hdmx' table (if any). */ |
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/* */ |
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static FT_Byte* |
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Get_Advance_Widths( TT_Face face, |
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@ -136,6 +136,7 @@ |
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{ |
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FT_UShort n; |
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for ( n = 0; n < face->hdmx.num_records; n++ ) |
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if ( face->hdmx.records[n].ppem == ppem ) |
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return face->hdmx.records[n].widths; |
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@ -153,7 +154,7 @@ |
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/*************************************************************************/ |
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/* */ |
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/* Translates an array of coordinates. */ |
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/* Translates an array of coordinates. */ |
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/* */ |
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static void |
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translate_array( FT_UInt n, |
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@ -175,10 +176,10 @@ |
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static void |
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tt_prepare_zone( TT_GlyphZone zone, |
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FT_GlyphLoad load, |
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FT_UInt start_point, |
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FT_UInt start_contour ) |
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tt_prepare_zone( TT_GlyphZone zone, |
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FT_GlyphLoad load, |
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FT_UInt start_point, |
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FT_UInt start_contour ) |
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{ |
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zone->n_points = (FT_UShort)( load->outline.n_points - start_point ); |
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zone->n_contours = (FT_Short) ( load->outline.n_contours - start_contour ); |
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@ -195,17 +196,17 @@ |
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/*************************************************************************/ |
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/* */ |
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/* The following functions are used by default with TrueType fonts. */ |
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/* However, they can be replaced by alternatives if we need to support */ |
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/* TrueType-compressed formats (like MicroType) in the future. */ |
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/* The following functions are used by default with TrueType fonts. */ |
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/* However, they can be replaced by alternatives if we need to support */ |
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/* TrueType-compressed formats (like MicroType) in the future. */ |
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/* */ |
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/*************************************************************************/ |
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FT_CALLBACK_DEF( FT_Error ) |
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TT_Access_Glyph_Frame( TT_Loader loader, |
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FT_UInt glyph_index, |
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FT_ULong offset, |
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FT_UInt byte_count ) |
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TT_Access_Glyph_Frame( TT_Loader loader, |
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FT_UInt glyph_index, |
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FT_ULong offset, |
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FT_UInt byte_count ) |
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{ |
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FT_Error error; |
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FT_Stream stream = loader->stream; |
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@ -225,7 +226,7 @@ |
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FT_CALLBACK_DEF( void ) |
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TT_Forget_Glyph_Frame( TT_Loader loader ) |
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TT_Forget_Glyph_Frame( TT_Loader loader ) |
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{ |
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FT_Stream stream = loader->stream; |
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@ -235,10 +236,10 @@ |
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FT_CALLBACK_DEF( FT_Error ) |
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TT_Load_Glyph_Header( TT_Loader loader ) |
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TT_Load_Glyph_Header( TT_Loader loader ) |
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{ |
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FT_Stream stream = loader->stream; |
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FT_Int byte_len = loader->byte_len - 10; |
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FT_Stream stream = loader->stream; |
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FT_Int byte_len = loader->byte_len - 10; |
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if ( byte_len < 0 ) |
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@ -263,18 +264,18 @@ |
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FT_CALLBACK_DEF( FT_Error ) |
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TT_Load_Simple_Glyph( TT_Loader load ) |
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TT_Load_Simple_Glyph( TT_Loader load ) |
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{ |
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FT_Error error; |
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FT_Stream stream = load->stream; |
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FT_GlyphLoader gloader = load->gloader; |
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FT_Int n_contours = load->n_contours; |
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FT_Outline* outline; |
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TT_Face face = (TT_Face)load->face; |
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TT_GlyphSlot slot = (TT_GlyphSlot)load->glyph; |
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FT_UShort n_ins; |
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FT_Int n, n_points; |
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FT_Int byte_len = load->byte_len; |
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FT_Error error; |
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FT_Stream stream = load->stream; |
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FT_GlyphLoader gloader = load->gloader; |
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FT_Int n_contours = load->n_contours; |
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FT_Outline* outline; |
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TT_Face face = (TT_Face)load->face; |
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TT_GlyphSlot slot = (TT_GlyphSlot)load->glyph; |
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FT_UShort n_ins; |
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FT_Int n, n_points; |
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FT_Int byte_len = load->byte_len; |
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/* reading the contours endpoints & number of points */ |
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@ -317,7 +318,7 @@ |
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if ( n_ins > face->max_profile.maxSizeOfInstructions ) |
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{ |
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FT_TRACE0(( "ERROR: Too many instructions!\n" )); |
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FT_TRACE0(( "TT_Load_Simple_Glyph: Too many instructions!\n" )); |
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error = TT_Err_Too_Many_Hints; |
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goto Fail; |
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} |
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@ -325,7 +326,7 @@ |
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byte_len -= n_ins; |
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if ( byte_len < 0 ) |
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{ |
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FT_TRACE0(( "ERROR: Instruction count mismatch!\n" )); |
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FT_TRACE0(( "TT_Load_Simple_Glyph: Instruction count mismatch!\n" )); |
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error = TT_Err_Too_Many_Hints; |
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goto Fail; |
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} |
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@ -466,14 +467,14 @@ |
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FT_CALLBACK_DEF( FT_Error ) |
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TT_Load_Composite_Glyph( TT_Loader loader ) |
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TT_Load_Composite_Glyph( TT_Loader loader ) |
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{ |
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FT_Error error; |
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FT_Stream stream = loader->stream; |
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FT_GlyphLoader gloader = loader->gloader; |
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FT_Error error; |
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FT_Stream stream = loader->stream; |
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FT_GlyphLoader gloader = loader->gloader; |
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FT_SubGlyph subglyph; |
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FT_UInt num_subglyphs; |
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FT_Int byte_len = loader->byte_len; |
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FT_UInt num_subglyphs; |
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FT_Int byte_len = loader->byte_len; |
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num_subglyphs = 0; |
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@ -603,17 +604,17 @@ |
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/* interpretation. */ |
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/* */ |
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static FT_Error |
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TT_Process_Simple_Glyph( TT_Loader load, |
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FT_Bool debug ) |
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TT_Process_Simple_Glyph( TT_Loader load, |
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FT_Bool debug ) |
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{ |
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FT_GlyphLoader gloader = load->gloader; |
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FT_Outline* outline = &gloader->current.outline; |
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FT_UInt n_points = outline->n_points; |
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FT_GlyphLoader gloader = load->gloader; |
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FT_Outline* outline = &gloader->current.outline; |
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FT_UInt n_points = outline->n_points; |
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#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER |
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FT_UInt n_ins; |
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FT_UInt n_ins; |
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#endif |
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TT_GlyphZone zone = &load->zone; |
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FT_Error error = TT_Err_Ok; |
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TT_GlyphZone zone = &load->zone; |
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FT_Error error = TT_Err_Ok; |
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FT_UNUSED( debug ); /* used by truetype interpreter only */ |
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@ -737,22 +738,22 @@ |
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/* TT_Loader object. */ |
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/* */ |
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static FT_Error |
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load_truetype_glyph( TT_Loader loader, |
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FT_UInt glyph_index ) |
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load_truetype_glyph( TT_Loader loader, |
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FT_UInt glyph_index ) |
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{ |
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#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER |
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FT_Stream stream = loader->stream; |
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FT_Stream stream = loader->stream; |
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#endif |
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FT_Error error; |
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TT_Face face = (TT_Face)loader->face; |
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FT_ULong offset; |
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FT_Int contours_count; |
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FT_UInt idx, num_points, count; |
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FT_Fixed x_scale, y_scale; |
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FT_GlyphLoader gloader = loader->gloader; |
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FT_Bool opened_frame = 0; |
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FT_Error error; |
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TT_Face face = (TT_Face)loader->face; |
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FT_ULong offset; |
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FT_Int contours_count; |
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FT_UInt idx, num_points, count; |
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FT_Fixed x_scale, y_scale; |
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FT_GlyphLoader gloader = loader->gloader; |
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FT_Bool opened_frame = 0; |
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/* check glyph index */ |
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@ -781,8 +782,8 @@ |
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Get_HMetrics( face, idx, |
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(FT_Bool)!(loader->load_flags & |
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FT_LOAD_IGNORE_GLOBAL_ADVANCE_WIDTH), |
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(FT_Bool)!( loader->load_flags & |
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FT_LOAD_IGNORE_GLOBAL_ADVANCE_WIDTH ), |
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&left_bearing, |
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&advance_width ); |
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@ -830,16 +831,6 @@ |
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loader->byte_len = (FT_Int)count; |
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#if 0 |
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/* temporary hack */ |
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if ( count < 10 ) |
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{ |
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/* This glyph is corrupted -- it does not have a complete header */ |
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error = TT_Err_Invalid_Outline; |
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goto Fail; |
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} |
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#endif |
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offset = loader->glyf_offset + offset; |
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/* access glyph frame */ |
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@ -889,7 +880,7 @@ |
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#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER |
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{ |
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TT_Size size = (TT_Size)loader->size; |
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TT_Size size = (TT_Size)loader->size; |
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error = TT_Process_Simple_Glyph( loader, |
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@ -951,9 +942,9 @@ |
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/* set up remaining glyph fields */ |
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FT_GlyphLoader_Add( gloader ); |
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glyph->num_subglyphs = gloader->base.num_subglyphs; |
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glyph->format = ft_glyph_format_composite; |
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glyph->subglyphs = gloader->base.subglyphs; |
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glyph->num_subglyphs = gloader->base.num_subglyphs; |
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glyph->format = ft_glyph_format_composite; |
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glyph->subglyphs = gloader->base.subglyphs; |
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goto Exit; |
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} |
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@ -964,11 +955,11 @@ |
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/* Now, read each subglyph independently. */ |
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{ |
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FT_Int n, num_base_points, num_new_points; |
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FT_SubGlyph subglyph = 0; |
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FT_Int n, num_base_points, num_new_points; |
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FT_SubGlyph subglyph = 0; |
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FT_UInt num_subglyphs = gloader->current.num_subglyphs; |
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|
FT_UInt num_base_subgs = gloader->base.num_subglyphs; |
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|
FT_UInt num_subglyphs = gloader->current.num_subglyphs; |
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FT_UInt num_base_subgs = gloader->base.num_subglyphs; |
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|
|
FT_GlyphLoader_Add( gloader ); |
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|
@ -1114,7 +1105,7 @@ |
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|
FT_TRACE5(( " Instructions size = %d\n", n_ins )); |
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|
/* in some fonts? */ |
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|
if ( n_ins == 0xFFFF ) |
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|
|
if ( n_ins == 0xFFFFU ) |
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n_ins = 0; |
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/* check it */ |
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|
@ -1260,7 +1251,7 @@ |
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|
/* `advance_Width_Max' field! It is used, to my knowledge, */ |
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|
/* exclusively in the X-TrueType font server. */ |
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|
/* */ |
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|
|
if ( face->postscript.isFixedPitch && |
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|
|
if ( face->postscript.isFixedPitch && |
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|
|
( loader->load_flags & FT_LOAD_IGNORE_GLOBAL_ADVANCE_WIDTH ) == 0 ) |
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|
|
advance = face->horizontal.advance_Width_Max; |
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|
@ -1285,9 +1276,9 @@ |
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|
FT_Short top_bearing; /* vertical top side bearing (EM units) */ |
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|
FT_UShort advance_height; /* vertical advance height (EM units) */ |
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|
|
FT_Pos left; /* scaled vertical left side bearing */ |
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|
FT_Pos top; /* scaled vertical top side bearing */ |
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|
|
FT_Pos advance; /* scaled vertical advance height */ |
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|
|
FT_Pos left; /* scaled vertical left side bearing */ |
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|
|
FT_Pos top; /* scaled vertical top side bearing */ |
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|
|
FT_Pos advance; /* scaled vertical advance height */ |
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|
|
|
|
/* Get the unscaled `tsb' and `ah' */ |
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|
|
@ -1316,7 +1307,7 @@ |
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|
|
/* here with: */ |
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|
|
/* ascender - descender + linegap */ |
|
|
|
|
/* */ |
|
|
|
|
if ( face->os2.version != 0xFFFF ) |
|
|
|
|
if ( face->os2.version != 0xFFFFU ) |
|
|
|
|
{ |
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|
|
top_bearing = (FT_Short)( face->os2.sTypoLineGap / 2 ); |
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|
|
advance_height = (FT_UShort)( face->os2.sTypoAscender - |
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|
@ -1375,8 +1366,8 @@ |
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if ( !face->postscript.isFixedPitch && size && |
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IS_HINTED( loader->load_flags ) ) |
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{ |
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FT_Byte* widths = Get_Advance_Widths( face, |
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size->root.metrics.x_ppem ); |
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FT_Byte* widths = Get_Advance_Widths( face, |
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size->root.metrics.x_ppem ); |
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if ( widths ) |
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@ -1423,10 +1414,10 @@ |
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FT_UInt load_flags ) |
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{ |
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SFNT_Service sfnt; |
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TT_Face face; |
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FT_Stream stream; |
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FT_Error error; |
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TT_LoaderRec loader; |
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TT_Face face; |
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FT_Stream stream; |
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FT_Error error; |
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TT_LoaderRec loader; |
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face = (TT_Face)glyph->face; |
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@ -1452,7 +1443,7 @@ |
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/* XXX: The convention should be emphasized in */ |
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/* the documents because it can be confusing. */ |
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if ( size && |
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size->strike_index != 0xFFFF && |
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size->strike_index != 0xFFFFU && |
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sfnt->load_sbits && |
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( load_flags & FT_LOAD_NO_BITMAP ) == 0 ) |
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@ -1578,6 +1569,7 @@ |
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/* Main loading loop */ |
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glyph->format = ft_glyph_format_outline; |
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glyph->num_subglyphs = 0; |
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error = load_truetype_glyph( &loader, glyph_index ); |
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if ( !error ) |
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compute_glyph_metrics( &loader, glyph_index ); |
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Werner Lemberg
23 years ago