android: Introduce a ui::PlatformWindow implementation for android.

components/view_manager/native_viewport/platform_viewport_android.h

-// Copyright 2013 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef COMPONENTS_VIEW_MANAGER_NATIVE_VIEWPORT_PLATFORM_VIEWPORT_ANDROID_H_
-#define COMPONENTS_VIEW_MANAGER_NATIVE_VIEWPORT_PLATFORM_VIEWPORT_ANDROID_H_
-
-#include "base/android/jni_weak_ref.h"
-#include "base/macros.h"
-#include "base/memory/weak_ptr.h"
-#include "components/view_manager/native_viewport/platform_viewport.h"
-#include "ui/events/event_constants.h"
-#include "ui/gfx/geometry/rect.h"
-#include "ui/gfx/geometry/size.h"
-#include "ui/gfx/sequential_id_generator.h"
-
-namespace gpu {
-class GLInProcessContext;
-}
-
-struct ANativeWindow;
-
-namespace native_viewport {
-
-class PlatformViewportAndroid : public PlatformViewport {
- public:
-  static bool Register(JNIEnv* env);
-
-  explicit PlatformViewportAndroid(Delegate* delegate);
-  ~PlatformViewportAndroid() override;
-
-  void Destroy(JNIEnv* env, jobject obj);
-  void SurfaceCreated(JNIEnv* env,
-                      jobject obj,
-                      jobject jsurface,
-                      float device_pixel_ratio);
-  void SurfaceDestroyed(JNIEnv* env, jobject obj);
-  void SurfaceSetSize(JNIEnv* env,
-                      jobject obj,
-                      jint width,
-                      jint height,
-                      jfloat density);
-  bool TouchEvent(JNIEnv* env,
-                  jobject obj,
-                  jlong time_ms,
-                  jint masked_action,
-                  jint pointer_id,
-                  jfloat x,
-                  jfloat y,
-                  jfloat pressure,
-                  jfloat touch_major,
-                  jfloat touch_minor,
-                  jfloat orientation,
-                  jfloat h_wheel,
-                  jfloat v_wheel);
-  bool KeyEvent(JNIEnv* env,
-                jobject obj,
-                bool pressed,
-                jint key_code,
-                jint unicode_character);
-
- private:
-  // Overridden from PlatformViewport:
-  void Init(const gfx::Rect& bounds) override;
-  void Show() override;
-  void Hide() override;
-  void Close() override;
-  gfx::Size GetSize() override;
-  void SetBounds(const gfx::Rect& bounds) override;
-
-  void ReleaseWindow();
-
-  Delegate* const delegate_;
-  JavaObjectWeakGlobalRef java_platform_viewport_android_;
-  ANativeWindow* window_;
-  ui::SequentialIDGenerator id_generator_;
-
-  gfx::Size size_;
-
-  base::WeakPtrFactory<PlatformViewportAndroid> weak_factory_;
-
-  DISALLOW_COPY_AND_ASSIGN(PlatformViewportAndroid);
-};
-
-}  // namespace native_viewport
-
-#endif  // COMPONENTS_VIEW_MANAGER_NATIVE_VIEWPORT_PLATFORM_VIEWPORT_ANDROID_H_