mirror of
https://github.com/classilla/tenfourfox.git
synced 2024-09-11 02:56:06 +00:00
24 lines
1.3 KiB
Diff
24 lines
1.3 KiB
Diff
diff --git a/gfx/cairo/cairo/src/cairo-win32-font.c b/gfx/cairo/cairo/src/cairo-win32-font.c
|
|
--- a/gfx/cairo/cairo/src/cairo-win32-font.c
|
|
+++ b/gfx/cairo/cairo/src/cairo-win32-font.c
|
|
@@ -986,6 +986,19 @@ _cairo_win32_scaled_font_init_glyph_metr
|
|
&metrics, 0, NULL, &matrix) == GDI_ERROR) {
|
|
status = _cairo_win32_print_gdi_error ("_cairo_win32_scaled_font_init_glyph_metrics:GetGlyphOutlineW");
|
|
memset (&metrics, 0, sizeof (GLYPHMETRICS));
|
|
+ } else {
|
|
+ if (metrics.gmBlackBoxX > 0 && scaled_font->base.options.antialias != CAIRO_ANTIALIAS_NONE) {
|
|
+ /* The bounding box reported by Windows supposedly contains the glyph's "black" area;
|
|
+ * however, antialiasing (especially with ClearType) means that the actual image that
|
|
+ * needs to be rendered may "bleed" into the adjacent pixels, mainly on the right side.
|
|
+ * To avoid clipping the glyphs when drawn by _cairo_surface_fallback_show_glyphs,
|
|
+ * for example, or other code that uses glyph extents to determine the area to update,
|
|
+ * we add a pixel of "slop" to left side of the nominal "black" area returned by GDI,
|
|
+ * and two pixels to the right (as tests show some glyphs bleed into this column).
|
|
+ */
|
|
+ metrics.gmptGlyphOrigin.x -= 1;
|
|
+ metrics.gmBlackBoxX += 3;
|
|
+ }
|
|
}
|
|
cairo_win32_scaled_font_done_font (&scaled_font->base);
|
|
if (status)
|