[CRD iOS] Hook the touch input feedback

remoting/ios/display/gl_display_handler.mm

 // Copyright 2017 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.
 
 #if !defined(__has_feature) || !__has_feature(objc_arc)
 #error "This file requires ARC support."
 #endif
 
 #include <array>
 
 #import "remoting/ios/display/gl_display_handler.h"
 
 #import "base/mac/bind_objc_block.h"
 #import "remoting/client/display/sys_opengl.h"
 #import "remoting/ios/display/gl_demo_screen.h"
 
 #include "base/bind.h"
 #include "base/macros.h"
 #include "base/memory/ptr_util.h"
 #include "base/memory/weak_ptr.h"
 #include "remoting/client/chromoting_client_runtime.h"
 #include "remoting/client/cursor_shape_stub_proxy.h"
 #include "remoting/client/display/gl_canvas.h"
 #include "remoting/client/display/gl_renderer.h"
 #include "remoting/client/display/gl_renderer_delegate.h"
 #include "remoting/client/dual_buffer_frame_consumer.h"
-#include "remoting/client/queued_task_poster.h"
+#include "remoting/client/render_stub_proxy.h"
 #include "remoting/client/software_video_renderer.h"
+#include "remoting/client/view_matrix.h"
 
 namespace remoting {
 namespace GlDisplayHandler {
 
 // The core that lives on the display thread.
-class Core : public protocol::CursorShapeStub, public GlRendererDelegate {
+class Core : public protocol::CursorShapeStub,
+             public RenderStub,
+             public GlRendererDelegate {
  public:
   Core();
   ~Core() override;
 
   void Initialize();
 
   void SetHandlerDelegate(id<GlDisplayHandlerDelegate> delegate);
 
   // CursorShapeStub interface.
   void SetCursorShape(const protocol::CursorShapeInfo& cursor_shape) override;
 
   // GlRendererDelegate interface.
   bool CanRenderFrame() override;
   void OnFrameRendered() override;
   void OnSizeChanged(int width, int height) override;
 
   void OnFrameReceived(std::unique_ptr<webrtc::DesktopFrame> frame,
                        const base::Closure& done);
   void Stop();
   void SurfaceCreated(GLKView* view);
   void SurfaceChanged(int width, int height);
-  void SetTransformation(const remoting::ViewMatrix& matrix);
+
+  // RenderStub interface.
+  void SetTransformation(const remoting::ViewMatrix& matrix) override;
+  void SetCursorPosition(float x, float y) override;
+  void SetCursorVisibility(bool visible) override;
+  void StartInputFeedback(float x, float y, float diameter) override;
+
   std::unique_ptr<protocol::FrameConsumer> GrabFrameConsumer();
   EAGLContext* GetEAGLContext();
   base::WeakPtr<Core> GetWeakPtr();
 
  private:
   remoting::ChromotingClientRuntime* runtime_;
 
   // Will be std::move'd when GrabFrameConsumer() is called.
   std::unique_ptr<DualBufferFrameConsumer> owned_frame_consumer_;
   base::WeakPtr<DualBufferFrameConsumer> frame_consumer_;
@@ skipping 121 matching lines @@
 void Core::SurfaceChanged(int width, int height) {
   DCHECK(runtime_->display_task_runner()->BelongsToCurrentThread());
   renderer_->OnSurfaceChanged(width, height);
 }
 
 void Core::SetTransformation(const remoting::ViewMatrix& matrix) {
   DCHECK(runtime_->display_task_runner()->BelongsToCurrentThread());
   renderer_->OnPixelTransformationChanged(matrix.ToMatrixArray());
 }
 
+void Core::SetCursorPosition(float x, float y) {
+  DCHECK(runtime_->display_task_runner()->BelongsToCurrentThread());
+  renderer_->OnCursorMoved(x, y);
+}
+
+void Core::SetCursorVisibility(bool visible) {
+  DCHECK(runtime_->display_task_runner()->BelongsToCurrentThread());
+  renderer_->OnCursorVisibilityChanged(visible);
+}
+void Core::StartInputFeedback(float x, float y, float diameter) {
+  DCHECK(runtime_->display_task_runner()->BelongsToCurrentThread());
+  renderer_->OnCursorInputFeedback(x, y, diameter);
+}
+
 EAGLContext* Core::GetEAGLContext() {
   return eagl_context_;
 }
 
 base::WeakPtr<remoting::GlDisplayHandler::Core> Core::GetWeakPtr() {
   return weak_ptr_;
 }
 
 }  // namespace GlDisplayHandler
 }  // namespace remoting
 
 @interface GlDisplayHandler () {
   std::unique_ptr<remoting::GlDisplayHandler::Core> _core;
   remoting::ChromotingClientRuntime* _runtime;
-  std::unique_ptr<remoting::QueuedTaskPoster> _uiTaskPoster;
 }
 @end
 
 @implementation GlDisplayHandler
 
 - (id)init {
   self = [super init];
   if (self) {
     _runtime = remoting::ChromotingClientRuntime::GetInstance();
     _core.reset(new remoting::GlDisplayHandler::Core());
-    _uiTaskPoster.reset(
-        new remoting::QueuedTaskPoster(_runtime->display_task_runner()));
   }
   return self;
 }
 
 - (void)dealloc {
   _runtime->display_task_runner()->DeleteSoon(FROM_HERE, _core.release());
 }
 
 #pragma mark - Public
 
 - (void)stop {
   _runtime->display_task_runner()->PostTask(
       FROM_HERE,
       base::Bind(&remoting::GlDisplayHandler::Core::Stop, _core->GetWeakPtr()));
 }
 
+- (std::unique_ptr<remoting::RenderStub>)CreateRenderStub {
+  return base::MakeUnique<remoting::RenderStubProxy>(
+      _core->GetWeakPtr(), _runtime->display_task_runner());
+}
+
 - (std::unique_ptr<remoting::protocol::VideoRenderer>)CreateVideoRenderer {
   return base::MakeUnique<remoting::SoftwareVideoRenderer>(
       _core->GrabFrameConsumer());
 }
 
 - (std::unique_ptr<remoting::protocol::CursorShapeStub>)CreateCursorShapeStub {
   return base::MakeUnique<remoting::CursorShapeStubProxy>(
       _core->GetWeakPtr(), _runtime->display_task_runner());
 }
 
 - (EAGLContext*)GetEAGLContext {
   return _core->GetEAGLContext();
 }
 
 - (void)onSurfaceCreated:(GLKView*)view {
   _runtime->display_task_runner()->PostTask(
       FROM_HERE, base::Bind(&remoting::GlDisplayHandler::Core::SurfaceCreated,
                             _core->GetWeakPtr(), view));
 }
 
 - (void)onSurfaceChanged:(const CGRect&)frame {
   _runtime->display_task_runner()->PostTask(
       FROM_HERE,
       base::Bind(&remoting::GlDisplayHandler::Core::SurfaceChanged,
                  _core->GetWeakPtr(), frame.size.width, frame.size.height));
 }
 
-- (void)onPixelTransformationChanged:(const remoting::ViewMatrix&)matrix {
-  _uiTaskPoster->AddTask(
-      base::Bind(&remoting::GlDisplayHandler::Core::SetTransformation,
-                 _core->GetWeakPtr(), matrix));
-}
-
 #pragma mark - Properties
 
 - (void)setDelegate:(id<GlDisplayHandlerDelegate>)delegate {
   _runtime->display_task_runner()->PostTask(
       FROM_HERE,
       base::Bind(&remoting::GlDisplayHandler::Core::SetHandlerDelegate,
                  _core->GetWeakPtr(), delegate));
 }
 
 - (id<GlDisplayHandlerDelegate>)delegate {
   // Implementation is still required for UNAVAILABLE_ATTRIBUTE.
   NOTREACHED();
   return nil;
 }
 
 @end