ppapi: Make sure the touch-event interface is detected correctly.

ppapi/examples/input/pointer_event_input.cc

-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// 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 "ppapi/c/pp_input_event.h"
 #include "ppapi/cpp/graphics_2d.h"
 #include "ppapi/cpp/image_data.h"
 #include "ppapi/cpp/input_event.h"
 #include "ppapi/cpp/instance.h"
 #include "ppapi/cpp/module.h"
 #include "ppapi/cpp/size.h"
@@ skipping 24 matching lines @@
 }
 
 class MyInstance : public pp::Instance, public pp::PaintManager::Client {
  public:
   MyInstance(PP_Instance instance)
       : pp::Instance(instance),
         paint_manager_(),
         last_x_(0),
         last_y_(0) {
     paint_manager_.Initialize(this, this, false);
-    RequestInputEvents(PP_INPUTEVENT_CLASS_MOUSE);
+    RequestInputEvents(PP_INPUTEVENT_CLASS_MOUSE | PP_INPUTEVENT_CLASS_TOUCH);
   }
 
   virtual bool HandleInputEvent(const pp::InputEvent& event) {
     switch (event.GetType()) {
       case PP_INPUTEVENT_TYPE_MOUSEDOWN: {
         pp::MouseInputEvent mouse_event(event);
         // Update the square on a mouse down.
         if (mouse_event.GetButton() == PP_INPUTEVENT_MOUSEBUTTON_LEFT) {
           UpdateSquare(static_cast<int>(mouse_event.GetPosition().x()),
                        static_cast<int>(mouse_event.GetPosition().y()));
         }
         return true;
       }
       case PP_INPUTEVENT_TYPE_MOUSEMOVE: {
         pp::MouseInputEvent mouse_event(event);
         // Update the square on a drag.
         if (mouse_event.GetButton() == PP_INPUTEVENT_MOUSEBUTTON_LEFT) {
           UpdateSquare(static_cast<int>(mouse_event.GetPosition().x()),
                        static_cast<int>(mouse_event.GetPosition().y()));
         }
         return true;
       }
+
+      case PP_INPUTEVENT_TYPE_TOUCHSTART: {
+        pp::TouchInputEvent touch(event);
+        // Update the square on a touch down.
+        uint32_t count = touch.GetTouchCount(PP_TOUCHLIST_TYPE_CHANGEDTOUCHES);
+        for (uint32_t i = 0; i < count; ++i) {
+          pp::TouchPoint point = touch.GetTouchByIndex(
+              PP_TOUCHLIST_TYPE_CHANGEDTOUCHES, i);
+          UpdateSquare(static_cast<int>(point.position().x()),
+                       static_cast<int>(point.position().y()));
+        }
+        return true;
+      }
+      case PP_INPUTEVENT_TYPE_TOUCHMOVE:
+      case PP_INPUTEVENT_TYPE_TOUCHEND:
+      case PP_INPUTEVENT_TYPE_TOUCHCANCEL:
+        return true;
+
       default:
         return false;
     }
   }
 
   virtual void DidChangeView(const pp::View& view) {
     paint_manager_.SetSize(view.GetRect().size());
   }
 
   // PaintManager::Client implementation.
@@ skipping 73 matching lines @@
 };
 
 namespace pp {
 
 // Factory function for your specialization of the Module object.
 Module* CreateModule() {
   return new MyModule();
 }
 
 }  // namespace pp