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author | Chris Wilson <chris@chris-wilson.co.uk> | 2009-07-23 19:34:10 +0100 |
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committer | Chris Wilson <chris@chris-wilson.co.uk> | 2009-07-24 10:44:03 +0100 |
commit | 4dc62bbedc5d8669c0508963497c568d0202f579 (patch) | |
tree | b679c09e5b26404d124f1f0fbc961ec17d86f6a0 /test/radial-gradient.c | |
parent | e98e2690cb4ac475819394334cb5e61a8e3d5557 (diff) | |
download | cairo-4dc62bbedc5d8669c0508963497c568d0202f579.tar.gz |
[test] Extend radial gradients to check r2 < r1
Include additional gradients to cover the cases where r1 > r2, as a pixman
bug was exposed by:
[Bug 22908] Invalid output of radial gradient
http://bugs.freedesktop.org/show_bug.cgi?id=22908
Diffstat (limited to 'test/radial-gradient.c')
-rw-r--r-- | test/radial-gradient.c | 36 |
1 files changed, 23 insertions, 13 deletions
diff --git a/test/radial-gradient.c b/test/radial-gradient.c index 9793feae8..a6d145c63 100644 --- a/test/radial-gradient.c +++ b/test/radial-gradient.c @@ -29,7 +29,7 @@ #define NUM_GRADIENTS 4 #define NUM_EXTEND 4 #define SIZE 60 -#define WIDTH (SIZE * NUM_GRADIENTS) +#define WIDTH (SIZE * NUM_GRADIENTS * NUM_GRADIENTS) #define HEIGHT (SIZE * NUM_EXTEND) static void @@ -37,18 +37,22 @@ draw_gradient (cairo_t *cr, int x, int y, int size, - double offset, - double inner_radius, + double r1_offset, + double r1_radius, + double r2_offset, + double r2_radius, cairo_extend_t extend) { cairo_pattern_t *pattern; cairo_save (cr); - pattern = cairo_pattern_create_radial (x + size/2.0 + offset, - y + size/2.0 + offset, inner_radius, - x + size/2.0, - y + size/2.0, size/3.0); + pattern = cairo_pattern_create_radial (x + size/2.0 + r1_offset, + y + size/2.0 + r1_offset, + r1_radius, + x + size/2.0 + r2_offset, + y + size/2.0 + r2_offset, + r2_radius); cairo_pattern_add_color_stop_rgba (pattern, 0.0, 1.0, 0.0, 0.0, 1.0); cairo_pattern_add_color_stop_rgba (pattern, sqrt (1.0 / 2.0), @@ -71,8 +75,7 @@ draw_gradient (cairo_t *cr, static cairo_test_status_t draw (cairo_t *cr, int width, int height) { - int i, j; - double inner_radius, offset; + int i, j, k; cairo_extend_t extend[NUM_EXTEND] = { CAIRO_EXTEND_NONE, CAIRO_EXTEND_REPEAT, @@ -84,10 +87,17 @@ draw (cairo_t *cr, int width, int height) for (j = 0; j < NUM_EXTEND; j++) { for (i = 0; i < NUM_GRADIENTS; i++) { - offset = i % 2 ? SIZE / 12.0 : 0.0; - inner_radius = i >= NUM_EXTEND / 2 ? SIZE / 6.0 : 0.0; - draw_gradient (cr, i * SIZE, j * SIZE, SIZE, - offset, inner_radius, extend[j]); + double r1_offset = i % 2 ? SIZE / 12.0 : 0.0; + double r1_radius = i >= NUM_GRADIENTS / 2 ? SIZE / 6.0 : 0.0; + for (k = 0; k < NUM_GRADIENTS; k++) { + double r2_offset = k % 2 ? SIZE / 12.0 : 0.0; + double r2_radius = k >= NUM_GRADIENTS / 2 ? SIZE / 3.0 : SIZE / 12.; + draw_gradient (cr, + i * SIZE * NUM_GRADIENTS + k * SIZE, j * SIZE, SIZE, + r1_offset, r1_radius, + r2_offset, r2_radius, + extend[j]); + } } } |