diff options
Diffstat (limited to 'src/truetype/ttgxvar.c')
| -rw-r--r-- | src/truetype/ttgxvar.c | 507 |
1 files changed, 296 insertions, 211 deletions
diff --git a/src/truetype/ttgxvar.c b/src/truetype/ttgxvar.c index d983e9e5e..ad4f266b2 100644 --- a/src/truetype/ttgxvar.c +++ b/src/truetype/ttgxvar.c @@ -45,6 +45,7 @@ #include <freetype/internal/ftcalc.h> #include <freetype/internal/ftstream.h> #include <freetype/internal/sfnt.h> +#include <freetype/internal/services/svmetric.h> #include <freetype/tttags.h> #include <freetype/ttnameid.h> #include <freetype/ftmm.h> @@ -465,7 +466,7 @@ if ( store_offset ) { error = tt_var_load_item_variation_store( - face, + FT_FACE( face ), table_offset + store_offset, &table->itemStore ); if ( error ) @@ -475,7 +476,7 @@ if ( axisMap_offset ) { error = tt_var_load_delta_set_index_mapping( - face, + FT_FACE( face ), table_offset + axisMap_offset, &table->axisMap, &table->itemStore, @@ -492,10 +493,11 @@ FT_LOCAL_DEF( FT_Error ) - tt_var_load_item_variation_store( TT_Face face, + tt_var_load_item_variation_store( FT_Face face, /* TT_Face */ FT_ULong offset, GX_ItemVarStore itemStore ) { + TT_Face ttface = (TT_Face)face; FT_Stream stream = FT_FACE_STREAM( face ); FT_Memory memory = stream->memory; @@ -507,10 +509,10 @@ FT_UShort axis_count; FT_UInt region_count; - FT_UInt i, j, k; + FT_UInt i, j; FT_Bool long_words; - GX_Blend blend = face->blend; + GX_Blend blend = ttface->blend; FT_ULong* dataOffsetArray = NULL; @@ -619,9 +621,10 @@ { GX_ItemVarData varData = &itemStore->varData[i]; - FT_UInt item_count; - FT_UInt word_delta_count; - FT_UInt region_idx_count; + FT_UInt item_count; + FT_UShort word_delta_count; + FT_UInt region_idx_count; + FT_UInt per_region_size; if ( FT_STREAM_SEEK( offset + dataOffsetArray[i] ) ) @@ -658,6 +661,8 @@ if ( FT_NEW_ARRAY( varData->regionIndices, region_idx_count ) ) goto Exit; varData->regionIdxCount = region_idx_count; + varData->wordDeltaCount = word_delta_count; + varData->longWords = long_words; for ( j = 0; j < varData->regionIdxCount; j++ ) { @@ -673,37 +678,22 @@ } } - /* Parse delta set. */ - /* */ - /* On input, deltas are (word_delta_count + region_idx_count) bytes */ - /* each if `long_words` isn't set, and twice as much otherwise. */ - /* */ - /* On output, deltas are expanded to `region_idx_count` shorts each. */ - if ( FT_NEW_ARRAY( varData->deltaSet, item_count * region_idx_count ) ) - goto Exit; - varData->itemCount = item_count; + per_region_size = word_delta_count + region_idx_count; + if ( long_words ) + per_region_size *= 2; - for ( j = 0; j < item_count * region_idx_count; ) + if ( FT_NEW_ARRAY( varData->deltaSet, per_region_size * item_count ) ) + goto Exit; + if ( FT_Stream_Read( stream, + varData->deltaSet, + per_region_size * item_count ) ) { - if ( long_words ) - { - for ( k = 0; k < word_delta_count; k++, j++ ) - if ( FT_READ_LONG( varData->deltaSet[j] ) ) - goto Exit; - for ( ; k < region_idx_count; k++, j++ ) - if ( FT_READ_SHORT( varData->deltaSet[j] ) ) - goto Exit; - } - else - { - for ( k = 0; k < word_delta_count; k++, j++ ) - if ( FT_READ_SHORT( varData->deltaSet[j] ) ) - goto Exit; - for ( ; k < region_idx_count; k++, j++ ) - if ( FT_READ_CHAR( varData->deltaSet[j] ) ) - goto Exit; - } + FT_TRACE2(( "deltaSet read failed." )); + error = FT_THROW( Invalid_Table ); + goto Exit; } + + varData->itemCount = item_count; } Exit: @@ -714,7 +704,7 @@ FT_LOCAL_DEF( FT_Error ) - tt_var_load_delta_set_index_mapping( TT_Face face, + tt_var_load_delta_set_index_mapping( FT_Face face, /* TT_Face */ FT_ULong offset, GX_DeltaSetIdxMap map, GX_ItemVarStore itemStore, @@ -941,7 +931,7 @@ } error = tt_var_load_item_variation_store( - face, + FT_FACE( face ), table_offset + store_offset, &table->itemStore ); if ( error ) @@ -950,7 +940,7 @@ if ( widthMap_offset ) { error = tt_var_load_delta_set_index_mapping( - face, + FT_FACE( face ), table_offset + widthMap_offset, &table->widthMap, &table->itemStore, @@ -992,24 +982,30 @@ FT_LOCAL_DEF( FT_ItemVarDelta ) - tt_var_get_item_delta( TT_Face face, + tt_var_get_item_delta( FT_Face face, /* TT_Face */ GX_ItemVarStore itemStore, FT_UInt outerIndex, FT_UInt innerIndex ) { + TT_Face ttface = (TT_Face)face; FT_Stream stream = FT_FACE_STREAM( face ); FT_Memory memory = stream->memory; FT_Error error = FT_Err_Ok; GX_ItemVarData varData; - FT_ItemVarDelta* deltaSet; + FT_ItemVarDelta* deltaSet = NULL; + FT_ItemVarDelta deltaSetStack[16]; + + FT_Fixed* scalars = NULL; + FT_Fixed scalarsStack[16]; FT_UInt master, j; - FT_Fixed* scalars = NULL; - FT_ItemVarDelta returnValue; + FT_ItemVarDelta returnValue = 0; + FT_UInt per_region_size; + FT_Byte* bytes; - if ( !face->blend || !face->blend->normalizedcoords ) + if ( !ttface->blend || !ttface->blend->normalizedcoords ) return 0; /* OpenType 1.8.4+: No variation data for this item */ @@ -1023,15 +1019,48 @@ if ( outerIndex >= itemStore->dataCount ) return 0; /* Out of range. */ - varData = &itemStore->varData[outerIndex]; - deltaSet = FT_OFFSET( varData->deltaSet, - varData->regionIdxCount * innerIndex ); + varData = &itemStore->varData[outerIndex]; if ( innerIndex >= varData->itemCount ) return 0; /* Out of range. */ - if ( FT_QNEW_ARRAY( scalars, varData->regionIdxCount ) ) - return 0; + if ( varData->regionIdxCount < 16 ) + { + deltaSet = deltaSetStack; + scalars = scalarsStack; + } + else + { + if ( FT_QNEW_ARRAY( deltaSet, varData->regionIdxCount ) ) + goto Exit; + if ( FT_QNEW_ARRAY( scalars, varData->regionIdxCount ) ) + goto Exit; + } + + /* Parse delta set. */ + /* */ + /* Deltas are (word_delta_count + region_idx_count) bytes each */ + /* if `longWords` isn't set, and twice as much otherwise. */ + per_region_size = varData->wordDeltaCount + varData->regionIdxCount; + if ( varData->longWords ) + per_region_size *= 2; + + bytes = varData->deltaSet + per_region_size * innerIndex; + + if ( varData->longWords ) + { + for ( master = 0; master < varData->wordDeltaCount; master++ ) + deltaSet[master] = FT_NEXT_LONG( bytes ); + for ( ; master < varData->regionIdxCount; master++ ) + deltaSet[master] = FT_NEXT_SHORT( bytes ); + } + else + { + for ( master = 0; master < varData->wordDeltaCount; master++ ) + deltaSet[master] = FT_NEXT_SHORT( bytes ); + for ( ; master < varData->regionIdxCount; master++ ) + deltaSet[master] = FT_NEXT_CHAR( bytes ); + } /* outer loop steps through master designs to be blended */ for ( master = 0; master < varData->regionIdxCount; master++ ) @@ -1060,27 +1089,27 @@ else if ( axis->peakCoord == 0 ) continue; - else if ( face->blend->normalizedcoords[j] == axis->peakCoord ) + else if ( ttface->blend->normalizedcoords[j] == axis->peakCoord ) continue; /* ignore this region if coords are out of range */ - else if ( face->blend->normalizedcoords[j] <= axis->startCoord || - face->blend->normalizedcoords[j] >= axis->endCoord ) + else if ( ttface->blend->normalizedcoords[j] <= axis->startCoord || + ttface->blend->normalizedcoords[j] >= axis->endCoord ) { scalar = 0; break; } /* cumulative product of all the axis scalars */ - else if ( face->blend->normalizedcoords[j] < axis->peakCoord ) + else if ( ttface->blend->normalizedcoords[j] < axis->peakCoord ) scalar = FT_MulDiv( scalar, - face->blend->normalizedcoords[j] - axis->startCoord, + ttface->blend->normalizedcoords[j] - axis->startCoord, axis->peakCoord - axis->startCoord ); else scalar = FT_MulDiv( scalar, - axis->endCoord - face->blend->normalizedcoords[j], + axis->endCoord - ttface->blend->normalizedcoords[j], axis->endCoord - axis->peakCoord ); } /* per-axis loop */ @@ -1106,7 +1135,11 @@ */ returnValue = FT_MulAddFix( scalars, deltaSet, varData->regionIdxCount ); - FT_FREE( scalars ); + Exit: + if ( scalars != scalarsStack ) + FT_FREE( scalars ); + if ( deltaSet != deltaSetStack ) + FT_FREE( deltaSet ); return returnValue; } @@ -1206,7 +1239,7 @@ innerIndex = gindex; } - delta = tt_var_get_item_delta( face, + delta = tt_var_get_item_delta( FT_FACE( face ), &table->itemStore, outerIndex, innerIndex ); @@ -1229,20 +1262,20 @@ FT_LOCAL_DEF( FT_Error ) - tt_hadvance_adjust( TT_Face face, + tt_hadvance_adjust( FT_Face face, /* TT_Face */ FT_UInt gindex, FT_Int *avalue ) { - return tt_hvadvance_adjust( face, gindex, avalue, 0 ); + return tt_hvadvance_adjust( (TT_Face)face, gindex, avalue, 0 ); } FT_LOCAL_DEF( FT_Error ) - tt_vadvance_adjust( TT_Face face, + tt_vadvance_adjust( FT_Face face, /* TT_Face */ FT_UInt gindex, FT_Int *avalue ) { - return tt_hvadvance_adjust( face, gindex, avalue, 1 ); + return tt_hvadvance_adjust( (TT_Face)face, gindex, avalue, 1 ); } @@ -1389,7 +1422,7 @@ records_offset = FT_STREAM_POS(); error = tt_var_load_item_variation_store( - face, + FT_FACE( face ), table_offset + store_offset, &blend->mvar_table->itemStore ); if ( error ) @@ -1488,16 +1521,19 @@ * The font face. */ FT_LOCAL_DEF( void ) - tt_apply_mvar( TT_Face face ) + tt_apply_mvar( FT_Face face ) /* TT_Face */ { - GX_Blend blend = face->blend; + TT_Face ttface = (TT_Face)face; + + GX_Blend blend = ttface->blend; GX_Value value, limit; + FT_Short mvar_hasc_delta = 0; FT_Short mvar_hdsc_delta = 0; FT_Short mvar_hlgp_delta = 0; - if ( !( face->variation_support & TT_FACE_FLAG_VAR_MVAR ) ) + if ( !( ttface->variation_support & TT_FACE_FLAG_VAR_MVAR ) ) return; value = blend->mvar_table->values; @@ -1505,7 +1541,7 @@ for ( ; value < limit; value++ ) { - FT_Short* p = ft_var_get_value_pointer( face, value->tag ); + FT_Short* p = ft_var_get_value_pointer( ttface, value->tag ); FT_Int delta; @@ -1543,9 +1579,7 @@ /* adjust all derived values */ { FT_Service_MetricsVariations var = - (FT_Service_MetricsVariations)face->face_var; - - FT_Face root = &face->root; + (FT_Service_MetricsVariations)ttface->face_var; /* * Apply the deltas of hasc, hdsc and hlgp to the FT_Face's ascender, @@ -1573,23 +1607,23 @@ * whether they were actually changed or the font had the OS/2 table's * fsSelection's bit 7 (USE_TYPO_METRICS) set. */ - FT_Short current_line_gap = root->height - root->ascender + - root->descender; + FT_Short current_line_gap = face->height - face->ascender + + face->descender; - root->ascender = root->ascender + mvar_hasc_delta; - root->descender = root->descender + mvar_hdsc_delta; - root->height = root->ascender - root->descender + + face->ascender = face->ascender + mvar_hasc_delta; + face->descender = face->descender + mvar_hdsc_delta; + face->height = face->ascender - face->descender + current_line_gap + mvar_hlgp_delta; - root->underline_position = face->postscript.underlinePosition - - face->postscript.underlineThickness / 2; - root->underline_thickness = face->postscript.underlineThickness; + face->underline_position = ttface->postscript.underlinePosition - + ttface->postscript.underlineThickness / 2; + face->underline_thickness = ttface->postscript.underlineThickness; /* iterate over all FT_Size objects and call `var->size_reset' */ /* to propagate the metrics changes */ if ( var && var->size_reset ) - FT_List_Iterate( &root->sizes_list, + FT_List_Iterate( &face->sizes_list, ft_size_reset_iterator, (void*)var ); } @@ -2102,7 +2136,7 @@ innerIndex = table->axisMap.innerIndex[idx]; } - delta = tt_var_get_item_delta( face, + delta = tt_var_get_item_delta( FT_FACE( face ), &table->itemStore, outerIndex, innerIndex ); @@ -2264,11 +2298,12 @@ * FreeType error code. 0 means success. */ FT_LOCAL_DEF( FT_Error ) - TT_Get_MM_Var( TT_Face face, + TT_Get_MM_Var( FT_Face face, /* TT_Face */ FT_MM_Var* *master ) { - FT_Stream stream = face->root.stream; - FT_Memory memory = face->root.memory; + TT_Face ttface = (TT_Face)face; + FT_Stream stream = FT_FACE_STREAM( face ); + FT_Memory memory = FT_FACE_MEMORY( face ); FT_ULong table_len; FT_Error error = FT_Err_Ok; FT_ULong fvar_start = 0; @@ -2332,19 +2367,19 @@ /* the default instance, which might be missing in the table of named */ /* instances (in 'fvar'). This value is validated in `sfobjs.c` and */ /* may be reset to 0 if consistency checks fail. */ - num_instances = (FT_UInt)face->root.style_flags >> 16; + num_instances = (FT_UInt)face->style_flags >> 16; /* read the font data and set up the internal representation */ /* if not already done */ - need_init = !face->blend; + need_init = !ttface->blend; if ( need_init ) { FT_TRACE2(( "FVAR " )); - if ( FT_SET_ERROR( face->goto_table( face, TTAG_fvar, - stream, &table_len ) ) ) + if ( FT_SET_ERROR( ttface->goto_table( ttface, TTAG_fvar, + stream, &table_len ) ) ) { FT_TRACE1(( "is missing\n" )); goto Exit; @@ -2377,14 +2412,14 @@ fvar_head.axisCount, fvar_head.axisCount == 1 ? "is" : "es" )); - if ( FT_NEW( face->blend ) ) + if ( FT_NEW( ttface->blend ) ) goto Exit; - num_axes = fvar_head.axisCount; - face->blend->num_axis = num_axes; + num_axes = fvar_head.axisCount; + ttface->blend->num_axis = num_axes; } else - num_axes = face->blend->num_axis; + num_axes = ttface->blend->num_axis; /* prepare storage area for MM data; this cannot overflow */ /* 32-bit arithmetic because of the size limits used in the */ @@ -2413,16 +2448,16 @@ if ( need_init ) { - face->blend->mmvar_len = mmvar_size + - axis_flags_size + - axis_size + - namedstyle_size + - next_coords_size + - next_name_size; - - if ( FT_ALLOC( mmvar, face->blend->mmvar_len ) ) + ttface->blend->mmvar_len = mmvar_size + + axis_flags_size + + axis_size + + namedstyle_size + + next_coords_size + + next_name_size; + + if ( FT_ALLOC( mmvar, ttface->blend->mmvar_len ) ) goto Exit; - face->blend->mmvar = mmvar; + ttface->blend->mmvar = mmvar; /* set up pointers and offsets into the `mmvar' array; */ /* the data gets filled in later on */ @@ -2528,27 +2563,27 @@ /* named instance coordinates are stored as design coordinates; */ /* we have to convert them to normalized coordinates also */ - if ( FT_NEW_ARRAY( face->blend->normalized_stylecoords, + if ( FT_NEW_ARRAY( ttface->blend->normalized_stylecoords, num_axes * num_instances ) ) goto Exit; - if ( fvar_head.instanceCount && !face->blend->avar_loaded ) + if ( fvar_head.instanceCount && !ttface->blend->avar_loaded ) { FT_ULong offset = FT_STREAM_POS(); - ft_var_load_avar( face ); + ft_var_load_avar( ttface ); if ( FT_STREAM_SEEK( offset ) ) goto Exit; } - FT_TRACE5(( "%d instance%s\n", + FT_TRACE5(( "%d named instance%s\n", fvar_head.instanceCount, fvar_head.instanceCount == 1 ? "" : "s" )); ns = mmvar->namedstyle; - nsc = face->blend->normalized_stylecoords; + nsc = ttface->blend->normalized_stylecoords; for ( i = 0; i < fvar_head.instanceCount; i++, ns++ ) { /* PostScript names add 2 bytes to the instance record size */ @@ -2571,7 +2606,7 @@ #ifdef FT_DEBUG_LEVEL_TRACE { - SFNT_Service sfnt = (SFNT_Service)face->sfnt; + SFNT_Service sfnt = (SFNT_Service)ttface->sfnt; FT_String* strname = NULL; FT_String* psname = NULL; @@ -2583,7 +2618,7 @@ if ( ns->strid != 0xFFFF ) { - (void)sfnt->get_name( face, + (void)sfnt->get_name( ttface, (FT_UShort)ns->strid, &strname ); if ( strname && !ft_strcmp( strname, ".notdef" ) ) @@ -2592,7 +2627,7 @@ if ( ns->psid != 0xFFFF ) { - (void)sfnt->get_name( face, + (void)sfnt->get_name( ttface, (FT_UShort)ns->psid, &psname ); if ( psname && !ft_strcmp( psname, ".notdef" ) ) @@ -2601,7 +2636,7 @@ (void)FT_STREAM_SEEK( pos ); - FT_TRACE5(( " instance %d (%s%s%s, %s%s%s)\n", + FT_TRACE5(( " named instance %d (%s%s%s, %s%s%s)\n", i, strname ? "name: `" : "", strname ? strname : "unnamed", @@ -2615,7 +2650,7 @@ } #endif /* FT_DEBUG_LEVEL_TRACE */ - ft_var_to_normalized( face, num_axes, ns->coords, nsc ); + ft_var_to_normalized( ttface, num_axes, ns->coords, nsc ); nsc += num_axes; FT_FRAME_EXIT(); @@ -2623,15 +2658,17 @@ if ( num_instances != fvar_head.instanceCount ) { - SFNT_Service sfnt = (SFNT_Service)face->sfnt; + SFNT_Service sfnt = (SFNT_Service)ttface->sfnt; FT_Int found, dummy1, dummy2; FT_UInt strid = ~0U; - /* the default instance is missing in array the */ - /* of named instances; try to synthesize an entry */ - found = sfnt->get_name_id( face, + /* The default instance is missing in array the */ + /* of named instances; try to synthesize an entry. */ + /* If this fails, `default_named_instance` remains */ + /* at value zero, which doesn't do any harm. */ + found = sfnt->get_name_id( ttface, TT_NAME_ID_TYPOGRAPHIC_SUBFAMILY, &dummy1, &dummy2 ); @@ -2639,7 +2676,7 @@ strid = TT_NAME_ID_TYPOGRAPHIC_SUBFAMILY; else { - found = sfnt->get_name_id( face, + found = sfnt->get_name_id( ttface, TT_NAME_ID_FONT_SUBFAMILY, &dummy1, &dummy2 ); @@ -2649,7 +2686,7 @@ if ( found ) { - found = sfnt->get_name_id( face, + found = sfnt->get_name_id( ttface, TT_NAME_ID_PS_NAME, &dummy1, &dummy2 ); @@ -2658,6 +2695,9 @@ FT_TRACE5(( "TT_Get_MM_Var:" " Adding default instance to named instances\n" )); + /* named instance indices start with value 1 */ + ttface->var_default_named_instance = num_instances; + ns = &mmvar->namedstyle[fvar_head.instanceCount]; ns->strid = strid; @@ -2671,7 +2711,7 @@ } } - ft_var_load_mvar( face ); + ft_var_load_mvar( ttface ); } /* fill the output array if requested */ @@ -2681,9 +2721,9 @@ FT_UInt n; - if ( FT_ALLOC( mmvar, face->blend->mmvar_len ) ) + if ( FT_ALLOC( mmvar, ttface->blend->mmvar_len ) ) goto Exit; - FT_MEM_COPY( mmvar, face->blend->mmvar, face->blend->mmvar_len ); + FT_MEM_COPY( mmvar, ttface->blend->mmvar, ttface->blend->mmvar_len ); axis_flags = (FT_UShort*)( (char*)mmvar + mmvar_size ); @@ -2759,7 +2799,7 @@ if ( !face->blend ) { - if ( FT_SET_ERROR( TT_Get_MM_Var( face, NULL ) ) ) + if ( FT_SET_ERROR( TT_Get_MM_Var( FT_FACE( face ), NULL ) ) ) goto Exit; } @@ -2844,26 +2884,29 @@ } } - if ( FT_IS_NAMED_INSTANCE( FT_FACE( face ) ) ) + if ( !have_diff ) { - FT_UInt instance_index = (FT_UInt)face->root.face_index >> 16; + if ( FT_IS_NAMED_INSTANCE( FT_FACE( face ) ) ) + { + FT_UInt instance_index = (FT_UInt)face->root.face_index >> 16; - c = blend->normalizedcoords + i; - n = blend->normalized_stylecoords + - ( instance_index - 1 ) * mmvar->num_axis + - i; + c = blend->normalizedcoords + i; + n = blend->normalized_stylecoords + + ( instance_index - 1 ) * mmvar->num_axis + + i; - for ( j = i; j < mmvar->num_axis; j++, n++, c++ ) - if ( *c != *n ) - have_diff = 1; - } - else - { - c = blend->normalizedcoords + i; - for ( j = i; j < mmvar->num_axis; j++, c++ ) - if ( *c != 0 ) - have_diff = 1; + for ( j = i; j < mmvar->num_axis; j++, n++, c++ ) + if ( *c != *n ) + have_diff = 1; + } + else + { + c = blend->normalizedcoords + i; + for ( j = i; j < mmvar->num_axis; j++, c++ ) + if ( *c != 0 ) + have_diff = 1; + } } /* return value -1 indicates `no change' */ @@ -2927,9 +2970,6 @@ } } - /* enforce recomputation of the PostScript name; */ - FT_FREE( face->postscript_name ); - Exit: return error; } @@ -2961,26 +3001,15 @@ * An array of `num_coords', each between [-1,1]. * * @Return: - * FreeType error code. 0 means success. + * FreeType error code. 0 means success, -1 means success and unchanged + * axis values. */ FT_LOCAL_DEF( FT_Error ) - TT_Set_MM_Blend( TT_Face face, + TT_Set_MM_Blend( FT_Face face, /* TT_Face */ FT_UInt num_coords, FT_Fixed* coords ) { - FT_Error error; - - - error = tt_set_mm_blend( face, num_coords, coords, 1 ); - if ( error ) - return error; - - if ( num_coords ) - face->root.face_flags |= FT_FACE_FLAG_VARIATION; - else - face->root.face_flags &= ~FT_FACE_FLAG_VARIATION; - - return FT_Err_Ok; + return tt_set_mm_blend( (TT_Face)face, num_coords, coords, 1 ); } @@ -3008,31 +3037,34 @@ * An array of `num_coords', each between [-1,1]. * * @Return: - * FreeType error code. 0 means success. + * FreeType error code. 0 means success, -1 means success and unchanged + * axis values. */ FT_LOCAL_DEF( FT_Error ) - TT_Get_MM_Blend( TT_Face face, + TT_Get_MM_Blend( FT_Face face, /* TT_Face */ FT_UInt num_coords, FT_Fixed* coords ) { + TT_Face ttface = (TT_Face)face; + FT_Error error = FT_Err_Ok; GX_Blend blend; FT_UInt i, nc; - if ( !face->blend ) + if ( !ttface->blend ) { if ( FT_SET_ERROR( TT_Get_MM_Var( face, NULL ) ) ) return error; } - blend = face->blend; + blend = ttface->blend; if ( !blend->coords ) { /* select default instance coordinates */ /* if no instance is selected yet */ - if ( FT_SET_ERROR( tt_set_mm_blend( face, 0, NULL, 1 ) ) ) + if ( FT_SET_ERROR( tt_set_mm_blend( ttface, 0, NULL, 1 ) ) ) return error; } @@ -3045,7 +3077,7 @@ nc = blend->num_axis; } - if ( face->doblend ) + if ( ttface->doblend ) { for ( i = 0; i < nc; i++ ) coords[i] = blend->normalizedcoords[i]; @@ -3092,15 +3124,16 @@ * FreeType error code. 0 means success. */ FT_LOCAL_DEF( FT_Error ) - TT_Set_Var_Design( TT_Face face, + TT_Set_Var_Design( FT_Face face, /* TT_Face */ FT_UInt num_coords, FT_Fixed* coords ) { + TT_Face ttface = (TT_Face)face; FT_Error error = FT_Err_Ok; GX_Blend blend; FT_MM_Var* mmvar; FT_UInt i; - FT_Memory memory = face->root.memory; + FT_Memory memory = FT_FACE_MEMORY( face ); FT_Fixed* c; FT_Fixed* n; @@ -3109,13 +3142,13 @@ FT_Bool have_diff = 0; - if ( !face->blend ) + if ( !ttface->blend ) { if ( FT_SET_ERROR( TT_Get_MM_Var( face, NULL ) ) ) goto Exit; } - blend = face->blend; + blend = ttface->blend; mmvar = blend->mmvar; if ( num_coords > mmvar->num_axis ) @@ -3143,13 +3176,13 @@ } } - if ( FT_IS_NAMED_INSTANCE( FT_FACE( face ) ) ) + if ( FT_IS_NAMED_INSTANCE( face ) ) { FT_UInt instance_index; FT_Var_Named_Style* named_style; - instance_index = (FT_UInt)face->root.face_index >> 16; + instance_index = (FT_UInt)face->face_index >> 16; named_style = mmvar->namedstyle + instance_index - 1; n = named_style->coords + num_coords; @@ -3186,22 +3219,17 @@ if ( FT_NEW_ARRAY( normalized, mmvar->num_axis ) ) goto Exit; - if ( !face->blend->avar_loaded ) - ft_var_load_avar( face ); + if ( !ttface->blend->avar_loaded ) + ft_var_load_avar( ttface ); FT_TRACE5(( "TT_Set_Var_Design:\n" )); FT_TRACE5(( " normalized design coordinates:\n" )); - ft_var_to_normalized( face, num_coords, blend->coords, normalized ); + ft_var_to_normalized( ttface, num_coords, blend->coords, normalized ); - error = tt_set_mm_blend( face, mmvar->num_axis, normalized, 0 ); + error = tt_set_mm_blend( ttface, mmvar->num_axis, normalized, 0 ); if ( error ) goto Exit; - if ( num_coords ) - face->root.face_flags |= FT_FACE_FLAG_VARIATION; - else - face->root.face_flags &= ~FT_FACE_FLAG_VARIATION; - Exit: FT_FREE( normalized ); return error; @@ -3234,28 +3262,29 @@ * FreeType error code. 0~means success. */ FT_LOCAL_DEF( FT_Error ) - TT_Get_Var_Design( TT_Face face, + TT_Get_Var_Design( FT_Face face, /* TT_Face */ FT_UInt num_coords, FT_Fixed* coords ) { - FT_Error error = FT_Err_Ok; + TT_Face ttface = (TT_Face)face; + FT_Error error = FT_Err_Ok; GX_Blend blend; FT_UInt i, nc; - if ( !face->blend ) + if ( !ttface->blend ) { if ( FT_SET_ERROR( TT_Get_MM_Var( face, NULL ) ) ) return error; } - blend = face->blend; + blend = ttface->blend; if ( !blend->coords ) { /* select default instance coordinates */ /* if no instance is selected yet */ - if ( FT_SET_ERROR( tt_set_mm_blend( face, 0, NULL, 1 ) ) ) + if ( FT_SET_ERROR( tt_set_mm_blend( ttface, 0, NULL, 1 ) ) ) return error; } @@ -3268,7 +3297,7 @@ nc = blend->num_axis; } - if ( face->doblend ) + if ( ttface->doblend ) { for ( i = 0; i < nc; i++ ) coords[i] = blend->coords[i]; @@ -3304,29 +3333,33 @@ * Value 0 indicates to not use an instance. * * @Return: - * FreeType error code. 0~means success. + * FreeType error code. 0~means success, -1 means success and unchanged + * axis values. */ FT_LOCAL_DEF( FT_Error ) - TT_Set_Named_Instance( TT_Face face, + TT_Set_Named_Instance( FT_Face face, /* TT_Face */ FT_UInt instance_index ) { + TT_Face ttface = (TT_Face)face; FT_Error error; GX_Blend blend; FT_MM_Var* mmvar; + FT_Memory memory = FT_FACE_MEMORY( face ); + FT_UInt num_instances; - if ( !face->blend ) + if ( !ttface->blend ) { if ( FT_SET_ERROR( TT_Get_MM_Var( face, NULL ) ) ) goto Exit; } - blend = face->blend; + blend = ttface->blend; mmvar = blend->mmvar; - num_instances = (FT_UInt)face->root.style_flags >> 16; + num_instances = (FT_UInt)face->style_flags >> 16; /* `instance_index' starts with value 1, thus `>' */ if ( instance_index > num_instances ) @@ -3337,8 +3370,7 @@ if ( instance_index > 0 ) { - FT_Memory memory = face->root.memory; - SFNT_Service sfnt = (SFNT_Service)face->sfnt; + SFNT_Service sfnt = (SFNT_Service)ttface->sfnt; FT_Var_Named_Style* named_style; FT_String* style_name; @@ -3346,40 +3378,89 @@ named_style = mmvar->namedstyle + instance_index - 1; - error = sfnt->get_name( face, + error = sfnt->get_name( ttface, (FT_UShort)named_style->strid, &style_name ); if ( error ) goto Exit; /* set (or replace) style name */ - FT_FREE( face->root.style_name ); - face->root.style_name = style_name; + FT_FREE( face->style_name ); + face->style_name = style_name; /* finally, select the named instance */ error = TT_Set_Var_Design( face, mmvar->num_axis, named_style->coords ); - if ( error ) - { - /* internal error code -1 means `no change' */ - if ( error == -1 ) - error = FT_Err_Ok; - goto Exit; - } } else + { + /* restore non-VF style name */ + FT_FREE( face->style_name ); + if ( FT_STRDUP( face->style_name, ttface->non_var_style_name ) ) + goto Exit; error = TT_Set_Var_Design( face, 0, NULL ); + } + + Exit: + return error; + } - face->root.face_index = ( instance_index << 16 ) | - ( face->root.face_index & 0xFFFFL ); - face->root.face_flags &= ~FT_FACE_FLAG_VARIATION; + + /************************************************************************** + * + * @Function: + * TT_Get_Default_Named_Instance + * + * @Description: + * Get the default named instance. + * + * @Input: + * face :: + * A handle to the source face. + * + * @Output: + * instance_index :: + * The default named instance index. + * + * @Return: + * FreeType error code. 0~means success. + */ + FT_LOCAL_DEF( FT_Error ) + TT_Get_Default_Named_Instance( FT_Face face, + FT_UInt *instance_index ) + { + TT_Face ttface = (TT_Face)face; + FT_Error error = FT_Err_Ok; + + + if ( !ttface->blend ) + { + if ( FT_SET_ERROR( TT_Get_MM_Var( face, NULL ) ) ) + goto Exit; + } + + *instance_index = ttface->var_default_named_instance; Exit: return error; } + /* This function triggers (lazy) recomputation of the `postscript_name` */ + /* field in `TT_Face`. */ + + FT_LOCAL_DEF( void ) + tt_construct_ps_name( FT_Face face ) + { + TT_Face ttface = (TT_Face)face; + FT_Memory memory = FT_FACE_MEMORY( face ); + + + FT_FREE( ttface->postscript_name ); + } + + /*************************************************************************/ /*************************************************************************/ /***** *****/ @@ -4412,22 +4493,25 @@ * the MM machinery in case it isn't loaded yet. */ FT_LOCAL_DEF( FT_Error ) - tt_get_var_blend( TT_Face face, + tt_get_var_blend( FT_Face face, /* TT_Face */ FT_UInt *num_coords, FT_Fixed* *coords, FT_Fixed* *normalizedcoords, FT_MM_Var* *mm_var ) { - if ( face->blend ) + TT_Face ttface = (TT_Face)face; + + + if ( ttface->blend ) { if ( num_coords ) - *num_coords = face->blend->num_axis; + *num_coords = ttface->blend->num_axis; if ( coords ) - *coords = face->blend->coords; + *coords = ttface->blend->coords; if ( normalizedcoords ) - *normalizedcoords = face->blend->normalizedcoords; + *normalizedcoords = ttface->blend->normalizedcoords; if ( mm_var ) - *mm_var = face->blend->mmvar; + *mm_var = ttface->blend->mmvar; } else { @@ -4444,7 +4528,7 @@ FT_LOCAL_DEF( void ) - tt_var_done_item_variation_store( TT_Face face, + tt_var_done_item_variation_store( FT_Face face, GX_ItemVarStore itemStore ) { FT_Memory memory = FT_FACE_MEMORY( face ); @@ -4473,7 +4557,7 @@ FT_LOCAL_DEF( void ) - tt_var_done_delta_set_index_map( TT_Face face, + tt_var_done_delta_set_index_map( FT_Face face, GX_DeltaSetIdxMap deltaSetIdxMap ) { FT_Memory memory = FT_FACE_MEMORY( face ); @@ -4493,10 +4577,11 @@ * Free the blend internal data structure. */ FT_LOCAL_DEF( void ) - tt_done_blend( TT_Face face ) + tt_done_blend( FT_Face face ) { + TT_Face ttface = (TT_Face)face; FT_Memory memory = FT_FACE_MEMORY( face ); - GX_Blend blend = face->blend; + GX_Blend blend = ttface->blend; if ( blend ) @@ -4568,7 +4653,7 @@ #else /* !TT_CONFIG_OPTION_GX_VAR_SUPPORT */ /* ANSI C doesn't like empty source files */ - typedef int _tt_gxvar_dummy; + typedef int tt_gxvar_dummy_; #endif /* !TT_CONFIG_OPTION_GX_VAR_SUPPORT */ |