blimp: Move compositing, input and render widget feature to client/core.

blimp/client/core/render_widget/blimp_render_widget.h

+// Copyright 2016 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 BLIMP_CLIENT_CORE_RENDER_WIDGET_BLIMP_RENDER_WIDGET_H_
+#define BLIMP_CLIENT_CORE_RENDER_WIDGET_BLIMP_RENDER_WIDGET_H_
+
+#include "base/callback_forward.h"
+#include "base/macros.h"
+#include "blimp/client/core/compositor/blimp_compositor.h"
+#include "ui/gfx/native_widget_types.h"
+
+namespace cc {
+namespace proto {
+class CompositorMessage;
+}  // namespace proto
+}  // namespace cc
+
+namespace ui {
+class MotionEvent;
+}  // namespace ui
+
+namespace blimp {
+namespace client {
+class BlimpCompositor;
+class BlimpRenderWidgetDelegate;
+class CompositorDepsProvider;
+
+// The BlimpRenderWidget is the blimp counterpart to the RenderWidget. This is
+// the model object that owns all the compositing and input state for a render
+// widget on the engine, and is our connection to the engine side renderer.
+class BlimpRenderWidget : public BlimpCompositorClient {
+ public:
+  BlimpRenderWidget(int32_t render_widget_id,
+                    CompositorDepsProvider* compositor_deps_provider,
+                    BlimpRenderWidgetDelegate* delegate);
+  ~BlimpRenderWidget() override;
+
+  int32_t GetId() const;
+
+  void set_did_swap_buffers_callback(base::Closure callback) {
+    did_swap_buffers_callback_ = callback;
+  }
+
+  // The following method is used when the compositor for the renderwidget has
+  // an on-screen context to draw directly to the native widget. It is legal to
+  // call this only if use_delegated_rendering is true for the
+  // CompositorDepsProvider passed when creating the widget.
+  virtual void SetAcceleratedWidget(gfx::AcceleratedWidget widget);
+
+  virtual void SetVisible(bool visible);
+
+  // Move to the BlimpRenderWidgetView.
+  bool OnTouchEvent(const ui::MotionEvent& motion_event);
+
+  virtual void OnCompositorMessageReceived(
+      std::unique_ptr<cc::proto::CompositorMessage> message);
+
+  BlimpCompositor* GetCompositorForTesting() const { return compositor_.get(); }
+
+ private:
+  friend class BlimpRenderWidgetTest;
+
+  class DirectRenderingDeps {

[nyquist, 2016/08/12 07:34:28]

Could this just be a forward declaration in the days of std::unique_ptr?

[Khushal, 2016/08/13 00:03:22]

That's an awesome idea. Thanks! Done!

+   public:
+    explicit DirectRenderingDeps(BlimpRenderWidget* render_widget);
+    ~DirectRenderingDeps();
+
+    void SetAcceleratedWidget(gfx::AcceleratedWidget widget);
+    void SetVisible(bool visible);
+
+    void RequestOutputSurface();
+
+   private:
+    void HandlePendingOutputSurfaceRequest();
+    void UpdateVisibility(bool visible);
+
+    BlimpRenderWidget* render_widget_;
+
+    gfx::AcceleratedWidget window_;
+    bool visible_;
+
+    // Whether there is an OutputSurface request pending from the current
+    // compositor. Becomes |true| if RequestOutputSurface is called, and |false|
+    // if compositor is deleted or we succeed in creating an OutputSurface.
+    bool output_surface_request_pending_;
+  };
+
+  // BlimpCompositorClient implementation.
+  void DidCompleteSwapBuffers() override;
+  void DidCommitAndDrawFrame() override;
+  void SendWebGestureEvent(
+      const blink::WebGestureEvent& gesture_event) override;
+  void SendCompositorMessage(
+      const cc::proto::CompositorMessage& message) override;
+  void RequestOutputSurface() override;
+
+  const int32_t render_widget_id_;
+
+  CompositorDepsProvider* compositor_deps_provider_;
+  BlimpRenderWidgetDelegate* delegate_;
+
+  std::unique_ptr<DirectRenderingDeps> direct_rendering_deps_;
+
+  base::Closure did_swap_buffers_callback_;
+
+  // TODO(khushalsagar): Change this to the remote compositor once it moves to
+  // cc/blimp.
+  std::unique_ptr<BlimpCompositor> compositor_;
+
+  DISALLOW_COPY_AND_ASSIGN(BlimpRenderWidget);
+};
+
+}  // namespace client
+}  // namespace blimp
+
+#endif  // BLIMP_CLIENT_CORE_RENDER_WIDGET_BLIMP_RENDER_WIDGET_H_