auto import from //depot/cupcake/@135843
diff --git a/include/ui/Region.h b/include/ui/Region.h
new file mode 100644
index 0000000..7689673
--- /dev/null
+++ b/include/ui/Region.h
@@ -0,0 +1,174 @@
+/*
+ * Copyright (C) 2007 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.
+ */
+
+#ifndef ANDROID_UI_REGION_H
+#define ANDROID_UI_REGION_H
+
+#include <stdint.h>
+#include <sys/types.h>
+
+#include <utils/Vector.h>
+#include <utils/Parcel.h>
+
+#include <ui/Rect.h>
+
+#include <hardware/copybit.h>
+
+#include <core/SkRegion.h>
+
+namespace android {
+// ---------------------------------------------------------------------------
+
+class String8;
+
+// ---------------------------------------------------------------------------
+class Region
+{
+public:
+ Region();
+ Region(const Region& rhs);
+ explicit Region(const SkRegion& rhs);
+ explicit Region(const Rect& rhs);
+ explicit Region(const Parcel& parcel);
+ explicit Region(const void* buffer);
+ ~Region();
+
+ Region& operator = (const Region& rhs);
+
+ inline bool isEmpty() const { return mRegion.isEmpty(); }
+ inline bool isRect() const { return mRegion.isRect(); }
+
+ Rect bounds() const;
+
+ const SkRegion& toSkRegion() const;
+
+ void clear();
+ void set(const Rect& r);
+
+ Region& orSelf(const Rect& rhs);
+ Region& andSelf(const Rect& rhs);
+
+ // boolean operators, applied on this
+ Region& orSelf(const Region& rhs);
+ Region& andSelf(const Region& rhs);
+ Region& subtractSelf(const Region& rhs);
+
+ // these translate rhs first
+ Region& translateSelf(int dx, int dy);
+ Region& orSelf(const Region& rhs, int dx, int dy);
+ Region& andSelf(const Region& rhs, int dx, int dy);
+ Region& subtractSelf(const Region& rhs, int dx, int dy);
+
+ // boolean operators
+ Region merge(const Region& rhs) const;
+ Region intersect(const Region& rhs) const;
+ Region subtract(const Region& rhs) const;
+
+ // these translate rhs first
+ Region translate(int dx, int dy) const;
+ Region merge(const Region& rhs, int dx, int dy) const;
+ Region intersect(const Region& rhs, int dx, int dy) const;
+ Region subtract(const Region& rhs, int dx, int dy) const;
+
+ // convenience operators overloads
+ inline Region operator | (const Region& rhs) const;
+ inline Region operator & (const Region& rhs) const;
+ inline Region operator - (const Region& rhs) const;
+ inline Region operator + (const Point& pt) const;
+
+ inline Region& operator |= (const Region& rhs);
+ inline Region& operator &= (const Region& rhs);
+ inline Region& operator -= (const Region& rhs);
+ inline Region& operator += (const Point& pt);
+
+ class iterator {
+ SkRegion::Iterator mIt;
+ public:
+ iterator(const Region& r);
+ inline operator bool () const { return !done(); }
+ int iterate(Rect* rect);
+ private:
+ inline bool done() const {
+ return const_cast<SkRegion::Iterator&>(mIt).done();
+ }
+ };
+
+ size_t rects(Vector<Rect>& rectList) const;
+
+ // flatten/unflatten a region to/from a Parcel
+ status_t write(Parcel& parcel) const;
+ status_t read(const Parcel& parcel);
+
+ // flatten/unflatten a region to/from a raw buffer
+ ssize_t write(void* buffer, size_t size) const;
+ static ssize_t writeEmpty(void* buffer, size_t size);
+
+ ssize_t read(const void* buffer);
+ static bool isEmpty(void* buffer);
+
+ void dump(String8& out, const char* what, uint32_t flags=0) const;
+ void dump(const char* what, uint32_t flags=0) const;
+
+private:
+ SkRegion mRegion;
+};
+
+
+Region Region::operator | (const Region& rhs) const {
+ return merge(rhs);
+}
+Region Region::operator & (const Region& rhs) const {
+ return intersect(rhs);
+}
+Region Region::operator - (const Region& rhs) const {
+ return subtract(rhs);
+}
+Region Region::operator + (const Point& pt) const {
+ return translate(pt.x, pt.y);
+}
+
+
+Region& Region::operator |= (const Region& rhs) {
+ return orSelf(rhs);
+}
+Region& Region::operator &= (const Region& rhs) {
+ return andSelf(rhs);
+}
+Region& Region::operator -= (const Region& rhs) {
+ return subtractSelf(rhs);
+}
+Region& Region::operator += (const Point& pt) {
+ return translateSelf(pt.x, pt.y);
+}
+
+// ---------------------------------------------------------------------------
+
+struct region_iterator : public copybit_region_t {
+ region_iterator(const Region& region) : i(region) {
+ this->next = iterate;
+ }
+private:
+ static int iterate(copybit_region_t const * self, copybit_rect_t* rect) {
+ return static_cast<const region_iterator*>(self)
+ ->i.iterate(reinterpret_cast<Rect*>(rect));
+ }
+ mutable Region::iterator i;
+};
+// ---------------------------------------------------------------------------
+}; // namespace android
+
+#endif // ANDROID_UI_REGION_H
+