gecko-dev/gfx/cairo/quartz-const-globals.patch

# HG changeset patch
# User Robert O'Callahan <robert@ocallahan.org>
# Date 1249558626 -43200
# Node ID 963b9451ad305924738d05d997a640698cd3af91
# Parent  e564f3ab4ea6e3b5dd9c4e9e6042d3a84c229dde
Bug 508730. Clean up Quartz gradient code by moving some local variables to static const globals. r=jmuizelaar

diff --git a/gfx/cairo/cairo/src/cairo-quartz-surface.c b/gfx/cairo/cairo/src/cairo-quartz-surface.c
--- a/gfx/cairo/cairo/src/cairo-quartz-surface.c
+++ b/gfx/cairo/cairo/src/cairo-quartz-surface.c
@@ -684,51 +684,50 @@ ComputeGradientValue (void *info, const 
 	    grad->stops[i-1].color.blue * ap +
 	    grad->stops[i].color.blue * bp;
 	out[3] =
 	    grad->stops[i-1].color.alpha * ap +
 	    grad->stops[i].color.alpha * bp;
     }
 }
 
+static const float gradient_output_value_ranges[8] = {
+    0.f, 1.f, 0.f, 1.f, 0.f, 1.f, 0.f, 1.f
+};
+static const CGFunctionCallbacks gradient_callbacks = {
+    0, ComputeGradientValue, (CGFunctionReleaseInfoCallback) cairo_pattern_destroy
+};
+
 static CGFunctionRef
 CreateGradientFunction (const 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
-    };
 
     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,
-			     output_value_ranges,
-			     &callbacks);
+			     gradient_output_value_ranges,
+			     &gradient_callbacks);
 }
 
 static CGFunctionRef
 CreateRepeatingLinearGradientFunction (cairo_quartz_surface_t *surface,
 				       const cairo_gradient_pattern_t *gpat,
 				       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 = {
-	0, ComputeGradientValue, (CGFunctionReleaseInfoCallback) cairo_pattern_destroy
-    };
 
     CGPoint mstart, mend;
 
     double dx, dy;
     int x_rep_start = 0, x_rep_end = 0;
     int y_rep_start = 0, y_rep_end = 0;
 
     int rep_start, rep_end;
@@ -787,18 +786,18 @@ CreateRepeatingLinearGradientFunction (c
 	/* 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,
-			     output_value_ranges,
-			     &callbacks);
+			     gradient_output_value_ranges,
+			     &gradient_callbacks);
 }
 
 static void
 UpdateRadialParameterToIncludePoint(double *max_t, CGPoint *center,
                                     double dr, double dx, double dy,
                                     double x, double y)
 {
     /* Compute a parameter t such that a circle centered at
@@ -847,20 +846,16 @@ CreateRepeatingRadialGradientFunction (c
                                        const cairo_gradient_pattern_t *gpat,
                                        CGPoint *start, double *start_radius,
                                        CGPoint *end, double *end_radius)
 {
     CGRect clip = CGContextGetClipBoundingBox (surface->cgContext);
     CGAffineTransform transform;
     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 = {
-        0, ComputeGradientValue, (CGFunctionReleaseInfoCallback) cairo_pattern_destroy
-    };
     CGPoint *inner;
     double *inner_radius;
     CGPoint *outer;
     double *outer_radius;
     /* minimum and maximum t-parameter values that will make our gradient
        cover the clipBox */
     double t_min, t_max, t_temp;
     /* outer minus inner */
@@ -927,18 +922,18 @@ CreateRepeatingRadialGradientFunction (c
   /* 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,
-           output_value_ranges,
-           &callbacks);
+           gradient_output_value_ranges,
+           &gradient_callbacks);
 }
 
 /* Obtain a CGImageRef from a #cairo_surface_t * */
 
 static void
 DataProviderReleaseCallback (void *info, const void *data, size_t size)
 {
     cairo_surface_t *surface = (cairo_surface_t *) info;