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[quartz] Create a copy of the pattern so that the reference counts are balanced

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The pattern could be stack allocated so we can't take a reference to it;
instead make a copy.

Based on a patch by Paolo Bonzini.
This commit is contained in:
Jeff Muizelaar 2008-12-10 17:02:55 -05:00
parent 673640a3b3
commit d93bf10edc
1 changed files with 14 additions and 2 deletions
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16
src/cairo-quartz-surface.c
View file

@ -682,13 +682,19 @@ ComputeGradientValue (void *info, const float *in, float *out)
static CGFunctionRef
CreateGradientFunction (cairo_gradient_pattern_t *gpat)
{
cairo_pattern_t *pat;
float input_value_range[2] = { 0.f, 1.f };
float output_value_ranges[8] = { 0.f, 1.f, 0.f, 1.f, 0.f, 1.f, 0.f, 1.f };
CGFunctionCallbacks callbacks = {
0, ComputeGradientValue, (CGFunctionReleaseInfoCallback) cairo_pattern_destroy
};
return CGFunctionCreate (gpat,
if (_cairo_pattern_create_copy (&pat, &gpat->base))
/* quartz doesn't deal very well with malloc failing, so there's
* not much point in us trying either */
return NULL;
return CGFunctionCreate (pat,
1,
input_value_range,
4,
@ -702,6 +708,7 @@ CreateRepeatingGradientFunction (cairo_quartz_surface_t *surface,
CGPoint *start, CGPoint *end,
CGAffineTransform matrix)
{
cairo_pattern_t *pat;
float input_value_range[2];
float output_value_ranges[8] = { 0.f, 1.f, 0.f, 1.f, 0.f, 1.f, 0.f, 1.f };
CGFunctionCallbacks callbacks = {
@ -766,7 +773,12 @@ CreateRepeatingGradientFunction (cairo_quartz_surface_t *surface,
input_value_range[0] = 0.0 - 1.0 * rep_start;
input_value_range[1] = 1.0 + 1.0 * rep_end;
return CGFunctionCreate (gpat,
if (_cairo_pattern_create_copy (&pat, &gpat->base))
/* quartz doesn't deal very well with malloc failing, so there's
* not much point in us trying either */
return NULL;
return CGFunctionCreate (pat,
1,
input_value_range,
4,