SK_ONCE for SkData and SkPathRef
Adds SK_ONCE_FRIEND, to allow SK_DEF_ONCE code to be friends with a class. This had to go in include/core to be visible to headers there.
BUG=
R=reed@google.com, bungeman@google.com
Author: mtklein@google.com
Review URL: https://codereview.chromium.org/26491003
git-svn-id: http://skia.googlecode.com/svn/trunk@11914 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/core/SkPathRef.cpp b/src/core/SkPathRef.cpp
index aeef227..f635c2a 100644
--- a/src/core/SkPathRef.cpp
+++ b/src/core/SkPathRef.cpp
@@ -6,6 +6,7 @@
*/
#include "SkBuffer.h"
+#include "SkOnce.h"
#include "SkPath.h"
#include "SkPathRef.h"
@@ -36,6 +37,18 @@
}
//////////////////////////////////////////////////////////////////////////////
+void SkPathRef::CreateEmptyImpl(SkPathRef** empty) {
+ *empty = SkNEW(SkPathRef);
+ (*empty)->computeBounds(); // Preemptively avoid a race to clear fBoundsIsDirty.
+}
+
+SkPathRef* SkPathRef::CreateEmpty() {
+ static SkPathRef* gEmptyPathRef;
+ SK_DECLARE_STATIC_ONCE(once);
+ SkOnce(&once, SkPathRef::CreateEmptyImpl, &gEmptyPathRef);
+ return SkRef(gEmptyPathRef);
+}
+
void SkPathRef::CreateTransformedCopy(SkAutoTUnref<SkPathRef>* dst,
const SkPathRef& src,
const SkMatrix& matrix) {