[ft] Fix extents with negative scales

Fixes https://github.com/behdad/harfbuzz/issues/162
9 years ago · c743ec5886
parent 73fec3992a
commit c743ec5886
1 changed files with 10 additions and 0 deletions
--- a/src/hb-ft.cc
+++ b/src/hb-ft.cc
@ -277,6 +277,16 @@ hb_ft_get_glyph_extents (hb_font_t *font HB_UNUSED,
  extents->y_bearing = ft_face->glyph->metrics.horiBearingY;
  extents->width = ft_face->glyph->metrics.width;
  extents->height = -ft_face->glyph->metrics.height;
+  if (font->x_scale < 0)
+  {
+    extents->x_bearing = -extents->x_bearing;
+    extents->width = -extents->width;
+  }
+  if (font->y_scale < 0)
+  {
+    extents->y_bearing = -extents->y_bearing;
+    extents->height = -extents->height;
+  }
  return true;
 }