[paint] Add slant to image() callback
And slant images in hb-view.
diff --git a/src/hb-paint.hh b/src/hb-paint.hh
index 401c301..eaba99b 100644
--- a/src/hb-paint.hh
+++ b/src/hb-paint.hh
@@ -100,9 +100,10 @@
void image (void *paint_data,
hb_blob_t *image,
hb_tag_t format,
+ float slant,
hb_glyph_extents_t *extents)
{ func.image (this, paint_data,
- image, format, extents,
+ image, format, slant, extents,
!user_data ? nullptr : user_data->image); }
void linear_gradient (void *paint_data,
hb_color_line_t *color_line,