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[cairo-scaled-font] Add missing matrix guard to cairo_scaled_font_create().

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cairo_scaled_font_create() did not check the user supplied ctm was valid,
triggering an assertion later when computing the scale factors.
This commit is contained in:
Chris Wilson 2008-01-13 11:40:53 +00:00
parent 3f59ef9548
commit 8d6249b2c1
1 changed files with 3 additions and 0 deletions
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src/cairo-scaled-font.c
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@ -608,6 +608,9 @@ cairo_scaled_font_create (cairo_font_face_t *font_face,
if (! _cairo_matrix_is_invertible (font_matrix))
return (cairo_scaled_font_t *)&_cairo_scaled_font_nil;
if (! _cairo_matrix_is_invertible (ctm))
return (cairo_scaled_font_t *)&_cairo_scaled_font_nil;
font_map = _cairo_scaled_font_map_lock ();
if (font_map == NULL)
return (cairo_scaled_font_t *)&_cairo_scaled_font_nil;