Adding Gesture Recognition to RenderWidgetHostViewWin (web client)

ui/base/gestures/gesture_recognizer_impl.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 "ui/base/gestures/gesture_recognizer_impl.h"
 
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/time.h"
 #include "ui/base/events.h"
@@ skipping 179 matching lines @@
   return gesture_sequence->ProcessTouchEventForGesture(event, status);
 }
 
 void GestureRecognizerImpl::QueueTouchEventForGesture(GestureConsumer* consumer,
                                                       const TouchEvent& event) {
   if (!event_queue_[consumer])
     event_queue_[consumer] = new std::queue<TouchEvent*>();
   event_queue_[consumer]->push(event.Copy());
 }
 
+bool GestureRecognizerImpl::IsQueueEmpty(GestureConsumer* consumer) {
+  return !event_queue_[consumer] || event_queue_[consumer]->empty();
+}
+
 GestureSequence::Gestures* GestureRecognizerImpl::AdvanceTouchQueue(
     GestureConsumer* consumer,
     bool processed) {
   if (!event_queue_[consumer] || event_queue_[consumer]->empty()) {
     LOG(ERROR) << "Trying to advance an empty gesture queue for " << consumer;
     return NULL;
   }
 
   ScopedPop pop(event_queue_[consumer]);
   TouchEvent* event = event_queue_[consumer]->front();
@@ skipping 44 matching lines @@
   if (touch_id_target_for_gestures_.count(touch_id))
     touch_id_target_for_gestures_.erase(touch_id);
 }
 
 // GestureRecognizer, static
 GestureRecognizer* GestureRecognizer::Create(GestureEventHelper* helper) {
   return new GestureRecognizerImpl(helper);
 }
 
 }  // namespace ui