Touch Events capability negotiation

remoting/host/desktop_session_proxy.cc

 // Copyright (c) 2012 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.
 
 #include "remoting/host/desktop_session_proxy.h"
 
 #include "base/compiler_specific.h"
 #include "base/logging.h"
 #include "base/process/process_handle.h"
 #include "base/memory/shared_memory.h"
 #include "base/single_thread_task_runner.h"
 #include "ipc/ipc_channel_proxy.h"
 #include "ipc/ipc_message_macros.h"
 #include "remoting/base/capabilities.h"
 #include "remoting/host/chromoting_messages.h"
 #include "remoting/host/client_session.h"
 #include "remoting/host/client_session_control.h"
 #include "remoting/host/desktop_session_connector.h"
 #include "remoting/host/ipc_audio_capturer.h"
 #include "remoting/host/ipc_input_injector.h"
 #include "remoting/host/ipc_mouse_cursor_monitor.h"
 #include "remoting/host/ipc_screen_controls.h"
 #include "remoting/host/ipc_video_frame_capturer.h"
 #include "remoting/proto/audio.pb.h"
 #include "remoting/proto/control.pb.h"
 #include "remoting/proto/event.pb.h"
+#include "remoting/protocol/capability_names.h"
 #include "third_party/webrtc/modules/desktop_capture/desktop_frame.h"
 #include "third_party/webrtc/modules/desktop_capture/desktop_geometry.h"
 #include "third_party/webrtc/modules/desktop_capture/mouse_cursor.h"
 #include "third_party/webrtc/modules/desktop_capture/shared_memory.h"
 
 #if defined(OS_WIN)
 #include "base/win/scoped_handle.h"
 #endif  // defined(OS_WIN)
 
 const bool kReadOnly = true;
-const char kSendInitialResolution[] = "sendInitialResolution";
-const char kRateLimitResizeRequests[] = "rateLimitResizeRequests";
 
 namespace remoting {
 
 class DesktopSessionProxy::IpcSharedBufferCore
     : public base::RefCountedThreadSafe<IpcSharedBufferCore> {
  public:
   IpcSharedBufferCore(int id,
                       base::SharedMemoryHandle handle,
                       base::ProcessHandle process,
                       size_t size)
@@ skipping 51 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(IpcSharedBuffer);
 };
 
 DesktopSessionProxy::DesktopSessionProxy(
     scoped_refptr<base::SingleThreadTaskRunner> audio_capture_task_runner,
     scoped_refptr<base::SingleThreadTaskRunner> caller_task_runner,
     scoped_refptr<base::SingleThreadTaskRunner> io_task_runner,
     scoped_refptr<base::SingleThreadTaskRunner> video_capture_task_runner,
     base::WeakPtr<ClientSessionControl> client_session_control,
     base::WeakPtr<DesktopSessionConnector> desktop_session_connector,
-    bool virtual_terminal)
+    bool virtual_terminal,
+    bool supports_touch_events)
     : audio_capture_task_runner_(audio_capture_task_runner),
       caller_task_runner_(caller_task_runner),
       io_task_runner_(io_task_runner),
       video_capture_task_runner_(video_capture_task_runner),
       client_session_control_(client_session_control),
       desktop_session_connector_(desktop_session_connector),
       pending_capture_frame_requests_(0),
       is_desktop_session_connected_(false),
-      virtual_terminal_(virtual_terminal) {
+      virtual_terminal_(virtual_terminal),
+      supports_touch_events_(supports_touch_events) {
   DCHECK(caller_task_runner_->BelongsToCurrentThread());
 }
 
 scoped_ptr<AudioCapturer> DesktopSessionProxy::CreateAudioCapturer() {
   DCHECK(caller_task_runner_->BelongsToCurrentThread());
 
   return make_scoped_ptr(new IpcAudioCapturer(this));
 }
 
 scoped_ptr<InputInjector> DesktopSessionProxy::CreateInputInjector() {
@@ skipping 13 matching lines @@
 
   return make_scoped_ptr(new IpcVideoFrameCapturer(this));
 }
 
 scoped_ptr<webrtc::MouseCursorMonitor>
     DesktopSessionProxy::CreateMouseCursorMonitor() {
   return make_scoped_ptr(new IpcMouseCursorMonitor(this));
 }
 
 std::string DesktopSessionProxy::GetCapabilities() const {
-  std::string result = kRateLimitResizeRequests;
+  std::string result = protocol::kRateLimitResizeRequests;
   // Ask the client to send its resolution unconditionally.
   if (virtual_terminal_)
-    result = result + " " + kSendInitialResolution;
+    result = result + " " + protocol::kSendInitialResolution;
+
+  if (supports_touch_events_)
+    result = result + " "  + protocol::kTouchEventsCapability;
+
   return result;
 }
 
 void DesktopSessionProxy::SetCapabilities(const std::string& capabilities) {
   // Delay creation of the desktop session until the client screen resolution is
   // received if the desktop session requires the initial screen resolution
   // (when |virtual_terminal_| is true) and the client is expected to
   // sent its screen resolution (the 'sendInitialResolution' capability is
   // supported).
   if (virtual_terminal_ &&
-      HasCapability(capabilities, kSendInitialResolution)) {
+      HasCapability(capabilities, protocol::kSendInitialResolution)) {
     VLOG(1) << "Waiting for the client screen resolution.";
     return;
   }
 
   // Connect to the desktop session.
   if (!is_desktop_session_connected_) {
     is_desktop_session_connected_ = true;
     if (desktop_session_connector_.get()) {
       desktop_session_connector_->ConnectTerminal(
           this, screen_resolution_, virtual_terminal_);
@@ skipping 393 matching lines @@
 }
 
 // static
 void DesktopSessionProxyTraits::Destruct(
     const DesktopSessionProxy* desktop_session_proxy) {
   desktop_session_proxy->caller_task_runner_->DeleteSoon(FROM_HERE,
                                                          desktop_session_proxy);
 }
 
 }  // namespace remoting