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Bug 534260: work around bad glyph extents returned by Core Graphics for empty glyphs in Al Bayan font. r=jmuizelaar

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This commit is contained in:
Jonathan Kew 2009-12-23 20:45:00 +00:00
parent cbb3b13a8f
commit 906e7cf4f3
1 changed files with 10 additions and 0 deletions
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10
gfx/cairo/cairo/src/cairo-quartz-font.c
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@ -420,6 +420,16 @@ _cairo_quartz_init_glyph_metrics (cairo_quartz_scaled_font_t *font,
!CGFontGetGlyphBBoxesPtr (font_face->cgFont, &glyph, 1, &bbox))
goto FAIL;
/* broken fonts like Al Bayan return incorrect bounds for some null characters,
see https://bugzilla.mozilla.org/show_bug.cgi?id=534260 */
if (unlikely (bbox.origin.x == -32767 &&
bbox.origin.y == -32767 &&
bbox.size.width == 65534 &&
bbox.size.height == 65534)) {
bbox.origin.x = bbox.origin.y = 0;
bbox.size.width = bbox.size.height = 0;
}
status = _cairo_matrix_compute_basis_scale_factors (&font->base.scale,
&xscale, &yscale, 1);
if (status)