Add mouse event support to Chromoting client (Pepper and X11).

remoting/client/input_handler.cc

+// Copyright (c) 2010 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/client/input_handler.h"
+
+#include "remoting/client/chromoting_view.h"
+#include "remoting/client/host_connection.h"
+
+namespace remoting {
+
+InputHandler::InputHandler(ClientContext* context,
+                           HostConnection* connection,
+                           ChromotingView* view)
+    : context_(context),
+      connection_(connection),
+      view_(view),
+      send_absolute_mouse_(true),
+      mouse_x_(0),
+      mouse_y_(0) {
+}
+
+void InputHandler::SendMouseMoveEvent(int x, int y) {
+  ChromotingClientMessage msg;
+
+  if (send_absolute_mouse_) {
+    MouseSetPositionEvent *event = msg.mutable_mouse_set_position_event();
+    event->set_x(x);
+    event->set_y(y);
+
+    int width, height;
+    view_->GetScreenSize(&width, &height);
+    event->set_width(width);
+    event->set_height(height);
+
+    // TODO(garykac): Fix drift problem with relative mouse events and
+    // then re-add this line.
+    //send_absolute_mouse_ = false;
+  } else {
+    MouseMoveEvent *event = msg.mutable_mouse_move_event();
+    int dx = x - mouse_x_;
+    int dy = y - mouse_y_;
+    if (dx == 0 && dy == 0) {
+      return;
+    }
+    event->set_offset_x(dx);
+    event->set_offset_y(dy);
+  }
+  // Record current mouse position.
+  mouse_x_ = x;
+  mouse_y_ = y;
+
+  connection_->SendEvent(msg);
+}
+
+void InputHandler::SendMouseButtonEvent(bool button_down,
+                                        MouseButton button) {
+  ChromotingClientMessage msg;
+
+  if (button_down) {
+    msg.mutable_mouse_down_event()->set_button(button);
+  } else {
+    msg.mutable_mouse_up_event()->set_button(button);
+  }
+
+  connection_->SendEvent(msg);
+}
+
+}  // namespace remoting