Added llvm into exceptions as we can't add README.chromium into 3rd party repository
[chromium-blink-merge.git] / ash / wm / system_gesture_event_filter.cc
blobf0bfb22ddc351762ffbf638c811cd13c5f241b4b
1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #include "ash/wm/system_gesture_event_filter.h"
7 #include "ash/ash_switches.h"
8 #include "ash/metrics/user_metrics_recorder.h"
9 #include "ash/shell.h"
10 #include "ash/touch/touch_uma.h"
11 #include "ash/wm/gestures/long_press_affordance_handler.h"
12 #include "ash/wm/gestures/overview_gesture_handler.h"
13 #include "ash/wm/gestures/shelf_gesture_handler.h"
14 #include "ui/base/touch/touch_device.h"
15 #include "ui/events/event.h"
16 #include "ui/events/event_constants.h"
18 namespace ash {
20 SystemGestureEventFilter::SystemGestureEventFilter()
21 : long_press_affordance_(new LongPressAffordanceHandler),
22 overview_gesture_handler_(new OverviewGestureHandler),
23 shelf_gesture_handler_(new ShelfGestureHandler()) {
26 SystemGestureEventFilter::~SystemGestureEventFilter() {
29 void SystemGestureEventFilter::OnMouseEvent(ui::MouseEvent* event) {
30 #if defined(OS_CHROMEOS)
31 if (event->type() == ui::ET_MOUSE_PRESSED && ui::IsTouchDevicePresent()) {
32 Shell::GetInstance()->metrics()->RecordUserMetricsAction(UMA_MOUSE_DOWN);
34 #endif
37 void SystemGestureEventFilter::OnScrollEvent(ui::ScrollEvent* event) {
38 if (overview_gesture_handler_ &&
39 overview_gesture_handler_->ProcessScrollEvent(*event)) {
40 event->StopPropagation();
44 void SystemGestureEventFilter::OnTouchEvent(ui::TouchEvent* event) {
45 aura::Window* target = static_cast<aura::Window*>(event->target());
46 ash::TouchUMA::GetInstance()->RecordTouchEvent(target, *event);
49 void SystemGestureEventFilter::OnGestureEvent(ui::GestureEvent* event) {
50 aura::Window* target = static_cast<aura::Window*>(event->target());
51 ash::TouchUMA::GetInstance()->RecordGestureEvent(target, *event);
52 long_press_affordance_->ProcessEvent(target, event);
54 if (overview_gesture_handler_ &&
55 overview_gesture_handler_->ProcessGestureEvent(*event)) {
56 event->StopPropagation();
57 return;
60 if (event->type() == ui::ET_GESTURE_WIN8_EDGE_SWIPE &&
61 shelf_gesture_handler_->ProcessGestureEvent(*event)) {
62 // Do not stop propagation, since the immersive fullscreen controller may
63 // need to handle this event.
64 return;
68 } // namespace ash