Add touch events to the protocol, the stub layer, and to the client plugin.

remoting/client/plugin/pepper_input_handler.cc

Index: remoting/client/plugin/pepper_input_handler.cc
diff --git a/remoting/client/plugin/pepper_input_handler.cc b/remoting/client/plugin/pepper_input_handler.cc
index 157efe5eaba5253a699addc563c6799a95ae28d4..94b303dc7554d14770f5a00964830c34e887ed86 100644
--- a/remoting/client/plugin/pepper_input_handler.cc
+++ b/remoting/client/plugin/pepper_input_handler.cc
@@ -10,6 +10,7 @@
 #include "ppapi/cpp/module_impl.h"
 #include "ppapi/cpp/mouse_cursor.h"
 #include "ppapi/cpp/point.h"
+#include "ppapi/cpp/touch_point.h"
 #include "ppapi/cpp/var.h"
 #include "remoting/proto/event.pb.h"
 #include "ui/events/keycodes/dom4/keycode_converter.h"
@@ -32,6 +33,47 @@ uint32_t MakeLockStates(const pp::InputEvent& event) {
   return lock_states;
 }
 
+// Crates protocol::TouchEvent instance from |pp_touch_event|.

[Wez, 2015/01/21 03:08:37]

s/Creates/Creates

[Rintaro Kuroiwa, 2015/01/28 01:12:29]

Done.

+// Note that only the changed touches are added to the instance.

[Wez, 2015/01/21 03:08:37]

s/instance/TouchEvent

[Rintaro Kuroiwa, 2015/01/28 01:12:29]

Done.

+protocol::TouchEvent MakeTouchEvent(const pp::TouchInputEvent& pp_touch_event) {
+  using protocol::TouchEvent;

[Wez, 2015/01/21 03:08:37]

nit: Blank line after this "using", since it's not logically part of the
following code block.

Chromoting code typically uses "using" at file scope, or not at all, FWIW, so
this usage is a little odd; suggest moving to file scope or removing.

[Rintaro Kuroiwa, 2015/01/28 01:12:29]

Not saving any lines, removing :)

+  TouchEvent touch_event;
+  TouchEvent::Point::TouchPointEventType type;
+  switch (pp_touch_event.GetType()) {
+    case PP_INPUTEVENT_TYPE_TOUCHSTART:
+      type = TouchEvent::Point::TOUCH_POINT_START;
+      break;
+    case PP_INPUTEVENT_TYPE_TOUCHMOVE:
+      type = TouchEvent::Point::TOUCH_POINT_MOVE;
+      break;
+    case PP_INPUTEVENT_TYPE_TOUCHEND:
+      type = TouchEvent::Point::TOUCH_POINT_END;
+      break;
+    case PP_INPUTEVENT_TYPE_TOUCHCANCEL:
+      type = TouchEvent::Point::TOUCH_POINT_CANCEL;
+      break;
+    default:
+      NOTIMPLEMENTED() << "Unknown event type: " << pp_touch_event.GetType();
+      return touch_event;
+  }
+
+  for (uint32_t i = 0;
+       i < pp_touch_event.GetTouchCount(PP_TOUCHLIST_TYPE_CHANGEDTOUCHES);
+       ++i) {
+    pp::TouchPoint pp_point =
+        pp_touch_event.GetTouchByIndex(PP_TOUCHLIST_TYPE_CHANGEDTOUCHES, i);
+    TouchEvent::Point* point = touch_event.add_touch_points();
+    point->set_event_type(type);
+    point->set_id(pp_point.id());
+    point->set_x(pp_point.position().x());
+    point->set_y(pp_point.position().y());
+    point->set_radius_x(pp_point.radii().x());
+    point->set_radius_y(pp_point.radii().y());
+  }
+
+  return touch_event;
+}
+
 // Builds a protocol::KeyEvent from the supplied PPAPI event.
 protocol::KeyEvent MakeKeyEvent(const pp::KeyboardInputEvent& pp_key_event) {
   protocol::KeyEvent key_event;
@@ -64,6 +106,7 @@ PepperInputHandler::PepperInputHandler()
       has_focus_(false),
       send_mouse_input_when_unfocused_(false),
       send_mouse_move_deltas_(false),
+      send_touch_events_(false),
       wheel_delta_x_(0),
       wheel_delta_y_(0),
       wheel_ticks_x_(0),
@@ -72,6 +115,18 @@ PepperInputHandler::PepperInputHandler()
 
 bool PepperInputHandler::HandleInputEvent(const pp::InputEvent& event) {
   switch (event.GetType()) {
+    // Touch input cases.
+    case PP_INPUTEVENT_TYPE_TOUCHSTART:
+    case PP_INPUTEVENT_TYPE_TOUCHMOVE:
+    case PP_INPUTEVENT_TYPE_TOUCHEND:
+    case PP_INPUTEVENT_TYPE_TOUCHCANCEL: {
+      if (!send_touch_events_)
+        return false;
+      pp::TouchInputEvent pp_touch_event(event);
+      input_stub_->InjectTouchEvent(MakeTouchEvent(pp_touch_event));
+      return true;
+    }
+
     case PP_INPUTEVENT_TYPE_CONTEXTMENU: {
       // We need to return true here or else we'll get a local (plugin) context
       // menu instead of the mouseup event for the right click.