| // Copyright 2014 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/events/gesture_detection/filtered_gesture_provider.h" |
| |
| #include "base/auto_reset.h" |
| #include "base/logging.h" |
| #include "ui/events/gesture_detection/motion_event.h" |
| |
| namespace ui { |
| |
| FilteredGestureProvider::FilteredGestureProvider( |
| const GestureProvider::Config& config, |
| GestureProviderClient* client) |
| : client_(client), |
| gesture_provider_(config, this), |
| gesture_filter_(this), |
| handling_event_(false) {} |
| |
| bool FilteredGestureProvider::OnTouchEvent(const MotionEvent& event) { |
| DCHECK(!handling_event_); |
| base::AutoReset<bool> handling_event(&handling_event_, true); |
| |
| pending_gesture_packet_ = GestureEventDataPacket::FromTouch(event); |
| |
| if (!gesture_provider_.OnTouchEvent(event)) |
| return false; |
| |
| TouchDispositionGestureFilter::PacketResult result = |
| gesture_filter_.OnGesturePacket(pending_gesture_packet_); |
| if (result != TouchDispositionGestureFilter::SUCCESS) { |
| NOTREACHED() << "Invalid touch gesture sequence detected."; |
| return false; |
| } |
| |
| return true; |
| } |
| |
| void FilteredGestureProvider::OnTouchEventAck(bool event_consumed) { |
| gesture_filter_.OnTouchEventAck(event_consumed); |
| } |
| |
| void FilteredGestureProvider::SetMultiTouchZoomSupportEnabled( |
| bool enabled) { |
| gesture_provider_.SetMultiTouchZoomSupportEnabled(enabled); |
| } |
| |
| void FilteredGestureProvider::SetDoubleTapSupportForPlatformEnabled( |
| bool enabled) { |
| gesture_provider_.SetDoubleTapSupportForPlatformEnabled(enabled); |
| } |
| |
| void FilteredGestureProvider::SetDoubleTapSupportForPageEnabled(bool enabled) { |
| gesture_provider_.SetDoubleTapSupportForPageEnabled(enabled); |
| } |
| |
| const ui::MotionEvent* FilteredGestureProvider::GetCurrentDownEvent() const { |
| return gesture_provider_.current_down_event(); |
| } |
| |
| void FilteredGestureProvider::OnGestureEvent(const GestureEventData& event) { |
| if (handling_event_) { |
| pending_gesture_packet_.Push(event); |
| return; |
| } |
| |
| gesture_filter_.OnGesturePacket( |
| GestureEventDataPacket::FromTouchTimeout(event)); |
| } |
| |
| void FilteredGestureProvider::ForwardGestureEvent( |
| const GestureEventData& event) { |
| client_->OnGestureEvent(event); |
| } |
| |
| } // namespace ui |