diff options
| author | Andrea Canciani <ranma42@gmail.com> | 2011-01-03 16:41:34 +0100 |
|---|---|---|
| committer | Andrea Canciani <ranma42@gmail.com> | 2011-01-18 15:15:28 +0100 |
| commit | 8c031c029d45d65dac22be9a809cc43f4449d41e (patch) | |
| tree | 1e357265de9d0429c1fba739fc23e10e9ed5e85f /src/cairo-quartz-surface.c | |
| parent | 78eade13b196d43a46d84b53e2e0f6cdf27de877 (diff) | |
pdf,ps,quartz: Use correct tolerance for gradient domain computation
The tolerance argument of _cairo_gradient_pattern_box_to_parameter ()
is in pattern space, so to have it constant in device space, it should
depend on the pattern matrix.
In ps and pdf the fallback resolution alone is not meaningful. The
resolution/fallback_resolution ratio should be used instead.
Diffstat (limited to 'src/cairo-quartz-surface.c')
| -rw-r--r-- | src/cairo-quartz-surface.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/src/cairo-quartz-surface.c b/src/cairo-quartz-surface.c index 06dd1287..d29eef06 100644 --- a/src/cairo-quartz-surface.c +++ b/src/cairo-quartz-surface.c @@ -842,7 +842,10 @@ _cairo_quartz_create_gradient_function (const cairo_gradient_pattern_t *gradient if (gradient->base.extend != CAIRO_EXTEND_NONE) { double bounds_x1, bounds_x2, bounds_y1, bounds_y2; - double t[2]; + double t[2], tolerance; + + tolerance = fabs (_cairo_matrix_compute_determinant (&gradient->base.matrix)); + tolerance /= _cairo_matrix_transformed_circle_major_axis (&gradient->base.matrix, 1); bounds_x1 = extents->x; bounds_y1 = extents->y; @@ -853,8 +856,11 @@ _cairo_quartz_create_gradient_function (const cairo_gradient_pattern_t *gradient &bounds_x2, &bounds_y2, NULL); - _cairo_gradient_pattern_box_to_parameter (gradient, bounds_x1, bounds_y1, - bounds_x2, bounds_y2, 1, t); + _cairo_gradient_pattern_box_to_parameter (gradient, + bounds_x1, bounds_y1, + bounds_x2, bounds_y2, + tolerance, + t); /* set the input range for the function -- the function knows how to map values outside of 0.0 .. 1.0 to the correct color */ |