Remove direct dependency of external/skia on frameworks/native
Moves all code that needs to link with libgui or libui into
frameworks/native/hwui/utils/TestWindowContext. This allows us to
run Skia automated tests against a HWUI backend to watch for
performance or correctness regressions on Android.
BUG=23556017
TEST=After this change, we can remove libui and frameworks/native/include
from external/skia/Android.mk
R=djsollen@google.com
Change-Id: I6f02a5ff98101e448606a1e892686e2c648b6c8a
diff --git a/libs/hwui/utils/TestWindowContext.h b/libs/hwui/utils/TestWindowContext.h
new file mode 100644
index 0000000..445a11b
--- /dev/null
+++ b/libs/hwui/utils/TestWindowContext.h
@@ -0,0 +1,67 @@
+/*
+ * Copyright (C) 2015 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 TESTWINDOWCONTEXT_H_
+#define TESTWINDOWCONTEXT_H_
+
+#include <cutils/compiler.h>
+
+class SkBitmap;
+class SkCanvas;
+
+namespace android {
+
+namespace uirenderer {
+
+/**
+ Wraps all libui/libgui classes and types that external tests depend on,
+ exposing only primitive Skia types.
+*/
+
+class ANDROID_API TestWindowContext {
+
+public:
+
+ TestWindowContext();
+
+ /// We need to know the size of the window.
+ void initialize(int width, int height);
+
+ /// Returns a canvas to draw into; NULL if not yet initialize()d.
+ SkCanvas* prepareToDraw();
+
+ /// Flushes all drawing commands to HWUI; no-op if not yet initialize()d.
+ void finishDrawing();
+
+ /// Blocks until HWUI has processed all pending drawing commands;
+ /// no-op if not yet initialize()d.
+ void fence();
+
+ /// Returns false if not yet initialize()d.
+ bool capturePixels(SkBitmap* bmp);
+
+private:
+ /// Hidden implementation.
+ class TestWindowData;
+
+ TestWindowData* mData;
+
+};
+
+} // namespace uirenderer
+} // namespace android
+
+#endif // TESTWINDOWCONTEXT_H_
+