grab from latest android



git-svn-id: http://skia.googlecode.com/svn/trunk@27 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/animator/SkDisplayBounds.cpp b/src/animator/SkDisplayBounds.cpp
new file mode 100644
index 0000000..d0499ce
--- /dev/null
+++ b/src/animator/SkDisplayBounds.cpp
@@ -0,0 +1,54 @@
+/* libs/graphics/animator/SkDisplayBounds.cpp
+**
+** Copyright 2006, The Android Open Source Project
+**
+** Licensed under the Apache License, Version 2.0 (the "License"); 
+** you may not use this file except in compliance with the License. 
+** You may obtain a copy of the License at 
+**
+**     http://www.apache.org/licenses/LICENSE-2.0 
+**
+** Unless required by applicable law or agreed to in writing, software 
+** distributed under the License is distributed on an "AS IS" BASIS, 
+** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
+** See the License for the specific language governing permissions and 
+** limitations under the License.
+*/
+
+#include "SkDisplayBounds.h"
+#include "SkAnimateMaker.h"
+
+#if SK_USE_CONDENSED_INFO == 0
+
+const SkMemberInfo SkDisplayBounds::fInfo[] = {
+    SK_MEMBER_INHERITED,
+    SK_MEMBER(inval, Boolean)
+};
+
+#endif
+
+DEFINE_GET_MEMBER(SkDisplayBounds);
+
+SkDisplayBounds::SkDisplayBounds() : inval(false) {
+}
+
+bool SkDisplayBounds::draw(SkAnimateMaker& maker) {
+    maker.fDisplayList.fUnionBounds = SkToBool(inval);
+    maker.fDisplayList.fDrawBounds = false;
+    fBounds.setEmpty();
+    bool result = INHERITED::draw(maker);
+    maker.fDisplayList.fUnionBounds = false;
+    maker.fDisplayList.fDrawBounds = true;
+    if (inval && fBounds.isEmpty() == false) {
+        SkIRect& rect = maker.fDisplayList.fInvalBounds;
+        maker.fDisplayList.fHasUnion = true;
+        if (rect.isEmpty())
+            rect = fBounds;
+        else 
+            rect.join(fBounds);
+    }
+    return result;
+}
+
+
+