Windows Host Touch Injection

remoting/host/input_injector_win.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/input_injector.h"
 
 #include <windows.h>
 
 #include "base/bind.h"
 #include "base/compiler_specific.h"
 #include "base/location.h"
 #include "base/memory/ref_counted.h"
 #include "base/single_thread_task_runner.h"
 #include "base/strings/string16.h"
 #include "base/strings/utf_string_conversions.h"
 #include "remoting/base/util.h"
 #include "remoting/host/clipboard.h"
+#include "remoting/host/touch_injector_win.h"
 #include "remoting/proto/event.pb.h"
 #include "ui/events/keycodes/dom4/keycode_converter.h"
 
 namespace remoting {
 
 namespace {
 
 // Helper used to call SendInput() API.
 void SendKeyboardInput(uint32_t flags, uint16_t scancode) {
   // Populate a Windows INPUT structure for the event.
@@ skipping 52 matching lines @@
     Core(scoped_refptr<base::SingleThreadTaskRunner> main_task_runner,
          scoped_refptr<base::SingleThreadTaskRunner> ui_task_runner);
 
     // Mirrors the ClipboardStub interface.
     void InjectClipboardEvent(const ClipboardEvent& event);
 
     // Mirrors the InputStub interface.
     void InjectKeyEvent(const KeyEvent& event);
     void InjectTextEvent(const TextEvent& event);
     void InjectMouseEvent(const MouseEvent& event);
+    void InjectTouchEvent(const TouchEvent& event);
 
     // Mirrors the InputInjector interface.
     void Start(scoped_ptr<protocol::ClipboardStub> client_clipboard);
 
     void Stop();
 
    private:
     friend class base::RefCountedThreadSafe<Core>;
     virtual ~Core();
 
     void HandleKey(const KeyEvent& event);
     void HandleText(const TextEvent& event);
     void HandleMouse(const MouseEvent& event);
+    void HandleTouch(const TouchEvent& event);
 
     scoped_refptr<base::SingleThreadTaskRunner> main_task_runner_;
     scoped_refptr<base::SingleThreadTaskRunner> ui_task_runner_;
     scoped_ptr<Clipboard> clipboard_;
+    TouchInjectorWin touch_injector_;
 
     DISALLOW_COPY_AND_ASSIGN(Core);
   };
 
   scoped_refptr<Core> core_;
 
   DISALLOW_COPY_AND_ASSIGN(InputInjectorWin);
 };
 
 InputInjectorWin::InputInjectorWin(
@@ skipping 16 matching lines @@
 
 void InputInjectorWin::InjectTextEvent(const TextEvent& event) {
   core_->InjectTextEvent(event);
 }
 
 void InputInjectorWin::InjectMouseEvent(const MouseEvent& event) {
   core_->InjectMouseEvent(event);
 }
 
 void InputInjectorWin::InjectTouchEvent(const TouchEvent& event) {
-  NOTIMPLEMENTED() << "Raw touch event injection not implemented for Windows.";
+  core_->InjectTouchEvent(event);
 }
 
 void InputInjectorWin::Start(
     scoped_ptr<protocol::ClipboardStub> client_clipboard) {
   core_->Start(client_clipboard.Pass());
 }
 
 InputInjectorWin::Core::Core(
     scoped_refptr<base::SingleThreadTaskRunner> main_task_runner,
     scoped_refptr<base::SingleThreadTaskRunner> ui_task_runner)
@@ skipping 36 matching lines @@
 void InputInjectorWin::Core::InjectMouseEvent(const MouseEvent& event) {
   if (!main_task_runner_->BelongsToCurrentThread()) {
     main_task_runner_->PostTask(
         FROM_HERE, base::Bind(&Core::InjectMouseEvent, this, event));
     return;
   }
 
   HandleMouse(event);
 }
 
+void InputInjectorWin::Core::InjectTouchEvent(const TouchEvent& event) {
+  if (!main_task_runner_->BelongsToCurrentThread()) {
+    main_task_runner_->PostTask(
+        FROM_HERE, base::Bind(&Core::InjectTouchEvent, this, event));
+    return;
+  }
+
+  HandleTouch(event);
+}
+
 void InputInjectorWin::Core::Start(
     scoped_ptr<protocol::ClipboardStub> client_clipboard) {
   if (!ui_task_runner_->BelongsToCurrentThread()) {
     ui_task_runner_->PostTask(
         FROM_HERE,
         base::Bind(&Core::Start, this, base::Passed(&client_clipboard)));
     return;
   }
 
   clipboard_->Start(client_clipboard.Pass());
+  touch_injector_.Init();
 }
 
 void InputInjectorWin::Core::Stop() {
   if (!ui_task_runner_->BelongsToCurrentThread()) {
     ui_task_runner_->PostTask(FROM_HERE, base::Bind(&Core::Stop, this));
     return;
   }
 
   clipboard_.reset();
+  touch_injector_.Deinitialize();
 }
 
 InputInjectorWin::Core::~Core() {}
 
 void InputInjectorWin::Core::HandleKey(const KeyEvent& event) {
   // HostEventDispatcher should filter events missing the pressed field.
   DCHECK(event.has_pressed() && event.has_usb_keycode());
 
   // Reset the system idle suspend timeout.
   SetThreadExecutionState(ES_SYSTEM_REQUIRED);
@@ skipping 90 matching lines @@
       input.mi.dwFlags |= down ? MOUSEEVENTF_LEFTDOWN : MOUSEEVENTF_LEFTUP;
     }
   }
 
   if (input.mi.dwFlags) {
     if (SendInput(1, &input, sizeof(INPUT)) == 0)
       PLOG(ERROR) << "Failed to inject a mouse event";
   }
 }
 
+void InputInjectorWin::Core::HandleTouch(const TouchEvent& event) {
+  touch_injector_.InjectTouchEvent(event);
+}
+
 }  // namespace
 
 scoped_ptr<InputInjector> InputInjector::Create(
     scoped_refptr<base::SingleThreadTaskRunner> main_task_runner,
     scoped_refptr<base::SingleThreadTaskRunner> ui_task_runner) {
   return make_scoped_ptr(
       new InputInjectorWin(main_task_runner, ui_task_runner));
 }
 
 }  // namespace remoting