Initial commit of our new Android app to demo Skia.

tools/viewer/sk_app/android/surface_glue_android.h

Index: tools/viewer/sk_app/android/surface_glue_android.h
diff --git a/tools/viewer/sk_app/android/surface_glue_android.h b/tools/viewer/sk_app/android/surface_glue_android.h
new file mode 100644
index 0000000000000000000000000000000000000000..85c4cc11c73c910ea0d7ce69aec3f40207076e75
--- /dev/null
+++ b/tools/viewer/sk_app/android/surface_glue_android.h
@@ -0,0 +1,47 @@
+/*
+* Copyright 2016 Google Inc.
+*
+* Use of this source code is governed by a BSD-style license that can be
+* found in the LICENSE file.
+*/
+
+#ifndef surface_glue_android_DEFINED
+#define surface_glue_android_DEFINED
+
+#include <pthread.h>
+
+#include <android/native_window_jni.h>
+
+#include "../Application.h"
+#include "../Window.h"
+
+namespace sk_app {
+
+enum MessageType { kUndefined, kSurfaceCreated, kSurfaceChanged, kSurfaceDestroyed, kDestroyApp };

[djsollen, 2016/05/09 13:17:14]

you'll need to add something like... kContentInvalidated so that you can post a
message to yourself to redraw when the window's invalidate method is called.

[liyuqian, 2016/05/09 14:27:27]

Done.

+
+struct Message {
+    MessageType fType = kUndefined;
+    ANativeWindow* fNativeWindow = nullptr;
+
+    Message() {}
+    Message(MessageType t) : fType(t) {}
+};
+
+struct SkiaAndroidApp {
+    int fPipes[2];  // 0 is the read message pipe, 1 is the write message pipe
+    Application* fApp;
+    Window* fWindow;
+    ANativeWindow* fNativeWindow;
+
+    SkiaAndroidApp();
+    ~SkiaAndroidApp();
+    void postMessage(const Message& message);
+    void readMessage(Message* message);

[djsollen, 2016/05/09 13:17:14]

add method paintIfNeeded() that checks to make sure their is an fNativeWindow
and if so calls fWindow->onPaint();

[liyuqian, 2016/05/09 14:27:28]

Done.

+
+private:
+    pthread_t fThread;
+};
+
+}  // namespace sk_app
+
+#endif