tt_size_ready_bytecode( TT_Size size, FT_Bool pedantic ) { FT_Error error = FT_Err_Ok; if ( size->bytecode_ready < 0 ) error = tt_size_init_bytecode( (FT_Size)size, pedantic ); else error = size->bytecode_ready; if ( error ) goto Exit; /* rescale CVT when needed */ if ( size->cvt_ready < 0 ) { FT_UInt i; TT_Face face = (TT_Face)size->root.face; /* Scale the cvt values to the new ppem. */ /* We use by default the y ppem to scale the CVT. */ for ( i = 0; i < size->cvt_size; i++ ) size->cvt[i] = FT_MulFix( face->cvt[i], size->ttmetrics.scale ); /* all twilight points are originally zero */ for ( i = 0; i < (FT_UInt)size->twilight.n_points; i++ ) { size->twilight.org[i].x = 0; size->twilight.org[i].y = 0; size->twilight.cur[i].x = 0; size->twilight.cur[i].y = 0; } /* clear storage area */ for ( i = 0; i < (FT_UInt)size->storage_size; i++ ) size->storage[i] = 0; size->GS = tt_default_graphics_state; error = tt_size_run_prep( size, pedantic ); } else error = size->cvt_ready; Exit: return error; }
tt_size_reset( TT_Size size ) { TT_Face face; FT_Error error = TT_Err_Ok; FT_Size_Metrics* metrics; size->ttmetrics.valid = FALSE; face = (TT_Face)size->root.face; metrics = &size->metrics; /* copy the result from base layer */ *metrics = size->root.metrics; if ( metrics->x_ppem < 1 || metrics->y_ppem < 1 ) return TT_Err_Invalid_PPem; /* This bit flag, if set, indicates that the ppems must be */ /* rounded to integers. Nearly all TrueType fonts have this bit */ /* set, as hinting won't work really well otherwise. */ /* */ if ( face->header.Flags & 8 ) { metrics->x_scale = FT_DivFix( metrics->x_ppem << 6, face->root.units_per_EM ); metrics->y_scale = FT_DivFix( metrics->y_ppem << 6, face->root.units_per_EM ); metrics->ascender = FT_PIX_ROUND( FT_MulFix( face->root.ascender, metrics->y_scale ) ); metrics->descender = FT_PIX_ROUND( FT_MulFix( face->root.descender, metrics->y_scale ) ); metrics->height = FT_PIX_ROUND( FT_MulFix( face->root.height, metrics->y_scale ) ); metrics->max_advance = FT_PIX_ROUND( FT_MulFix( face->root.max_advance_width, metrics->x_scale ) ); } /* compute new transformation */ if ( metrics->x_ppem >= metrics->y_ppem ) { size->ttmetrics.scale = metrics->x_scale; size->ttmetrics.ppem = metrics->x_ppem; size->ttmetrics.x_ratio = 0x10000L; size->ttmetrics.y_ratio = FT_MulDiv( metrics->y_ppem, 0x10000L, metrics->x_ppem ); } else { size->ttmetrics.scale = metrics->y_scale; size->ttmetrics.ppem = metrics->y_ppem; size->ttmetrics.x_ratio = FT_MulDiv( metrics->x_ppem, 0x10000L, metrics->y_ppem ); size->ttmetrics.y_ratio = 0x10000L; } #ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER { FT_UInt i; /* Scale the cvt values to the new ppem. */ /* We use by default the y ppem to scale the CVT. */ for ( i = 0; i < size->cvt_size; i++ ) size->cvt[i] = FT_MulFix( face->cvt[i], size->ttmetrics.scale ); /* All twilight points are originally zero */ for ( i = 0; i < (FT_UInt)size->twilight.n_points; i++ ) { size->twilight.org[i].x = 0; size->twilight.org[i].y = 0; size->twilight.cur[i].x = 0; size->twilight.cur[i].y = 0; } /* clear storage area */ for ( i = 0; i < (FT_UInt)size->storage_size; i++ ) size->storage[i] = 0; size->GS = tt_default_graphics_state; error = tt_size_run_prep( size ); } #endif /* TT_CONFIG_OPTION_BYTECODE_INTERPRETER */ if ( !error ) size->ttmetrics.valid = TRUE; return error; }