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[cairo-analysis-surface] Check for an empty transformed bbox.

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After transforming the bbox, check that it has not been projected into
an empty box.
This commit is contained in:
Chris Wilson 2008-01-05 19:22:57 +00:00
parent d9461733af
commit be126b6842
1 changed files with 8 additions and 2 deletions
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10
src/cairo-analysis-surface.c
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@ -115,8 +115,14 @@ _cairo_analysis_surface_add_operation (cairo_analysis_surface_t *surface,
NULL);
rect->x = floor (x1);
rect->y = floor (x2);
rect->width = ceil (x2) - rect->x;
rect->height = ceil (y2) - rect->y;
x2 = ceil (x2) - rect->x;
y2 = ceil (y2) - rect->y;
if (x2 <= 0 || y2 <= 0)
return CAIRO_STATUS_SUCCESS;
rect->width = x2;
rect->height = y2;
}
bbox.p1.x = _cairo_fixed_from_int (rect->x);