Commit 44fd524ee41465ed331c73baaae6dec4b57657ec
2022-07-05T15:09:28
[sfnt] Support variable 'COLR' v1 `PaintVarRotate*`. * src/sfnt/ttcolr.c (FT_PaintFormat_Internal): New enumeration values `FT_COLR_PAINTFORMAT_INTERNAL_VAR_ROTATE` and `FT_COLR_PAINTFORMAT_INTERNAL_VAR_ROTATE_CENTER`. (read_paint): Handle new enumeration values.
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diff --git a/src/sfnt/ttcolr.c b/src/sfnt/ttcolr.c
index bb2ffd5..a4abd5b 100644
--- a/src/sfnt/ttcolr.c
+++ b/src/sfnt/ttcolr.c
@@ -78,7 +78,9 @@
FT_COLR_PAINTFORMAT_INTERNAL_VAR_SCALE_UNIFORM = 21,
FT_COLR_PAINTFORMAT_INTERNAL_SCALE_UNIFORM_CENTER = 22,
FT_COLR_PAINTFORMAT_INTERNAL_VAR_SCALE_UNIFORM_CENTER = 23,
+ FT_COLR_PAINTFORMAT_INTERNAL_VAR_ROTATE = 25,
FT_COLR_PAINTFORMAT_INTERNAL_ROTATE_CENTER = 26,
+ FT_COLR_PAINTFORMAT_INTERNAL_VAR_ROTATE_CENTER = 27,
FT_COLR_PAINTFORMAT_INTERNAL_SKEW_CENTER = 30
} FT_PaintFormat_Internal;
@@ -1050,17 +1052,26 @@
return 1;
}
- else if ( apaint->format == FT_COLR_PAINTFORMAT_ROTATE ||
+ else if ( apaint->format == FT_COLR_PAINTFORMAT_ROTATE ||
(FT_PaintFormat_Internal)apaint->format ==
- FT_COLR_PAINTFORMAT_INTERNAL_ROTATE_CENTER )
+ FT_COLR_PAINTFORMAT_INTERNAL_ROTATE_CENTER ||
+ (FT_PaintFormat_Internal)apaint->format ==
+ FT_COLR_PAINTFORMAT_INTERNAL_VAR_ROTATE ||
+ (FT_PaintFormat_Internal)apaint->format ==
+ FT_COLR_PAINTFORMAT_INTERNAL_VAR_ROTATE_CENTER )
{
+ FT_UInt num_deltas = 0;
+
+
apaint->u.rotate.paint.p = child_table_p;
apaint->u.rotate.paint.insert_root_transform = 0;
apaint->u.rotate.angle = F2DOT14_TO_FIXED( FT_NEXT_SHORT( p ) );
if ( (FT_PaintFormat_Internal)apaint->format ==
- FT_COLR_PAINTFORMAT_INTERNAL_ROTATE_CENTER )
+ FT_COLR_PAINTFORMAT_INTERNAL_ROTATE_CENTER ||
+ (FT_PaintFormat_Internal)apaint->format ==
+ FT_COLR_PAINTFORMAT_INTERNAL_VAR_ROTATE_CENTER )
{
apaint->u.rotate.center_x = INT_TO_FIXED( FT_NEXT_SHORT( p ) );
apaint->u.rotate.center_y = INT_TO_FIXED( FT_NEXT_SHORT( p ) );
@@ -1071,6 +1082,39 @@
apaint->u.rotate.center_y = 0;
}
+#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
+ if ( ( (FT_PaintFormat_Internal)apaint->format ==
+ FT_COLR_PAINTFORMAT_INTERNAL_VAR_ROTATE ||
+ (FT_PaintFormat_Internal)apaint->format ==
+ FT_COLR_PAINTFORMAT_INTERNAL_VAR_ROTATE_CENTER ) &&
+ VARIABLE_COLRV1_ENABLED )
+ {
+ var_index_base = FT_NEXT_ULONG( p );
+
+ if ( (FT_PaintFormat_Internal)apaint->format ==
+ FT_COLR_PAINTFORMAT_INTERNAL_VAR_ROTATE_CENTER )
+ num_deltas = 3;
+ if ( (FT_PaintFormat_Internal)apaint->format ==
+ FT_COLR_PAINTFORMAT_INTERNAL_VAR_ROTATE )
+ num_deltas = 1;
+
+ if ( num_deltas > 0 )
+ {
+ if ( !get_deltas_for_var_index_base( face, colr, var_index_base,
+ num_deltas, item_deltas ) )
+ return 0;
+
+ apaint->u.rotate.angle += F2DOT14_TO_FIXED( item_deltas[0] );
+
+ if ( num_deltas == 3 )
+ {
+ apaint->u.rotate.center_x += INT_TO_FIXED( item_deltas[1] );
+ apaint->u.rotate.center_y += INT_TO_FIXED( item_deltas[2] );
+ }
+ }
+ }
+#endif
+
apaint->format = FT_COLR_PAINTFORMAT_ROTATE;
return 1;