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/gestures/shelf_gesture_handler.h"
7 #include "ash/root_window_controller.h"
8 #include "ash/session/session_state_delegate.h"
9 #include "ash/shelf/shelf_layout_manager.h"
10 #include "ash/shelf/shelf_types.h"
11 #include "ash/shelf/shelf_widget.h"
12 #include "ash/shell.h"
13 #include "ash/system/status_area_widget.h"
14 #include "ash/wm/gestures/tray_gesture_handler.h"
15 #include "ash/wm/window_state.h"
16 #include "ash/wm/window_util.h"
17 #include "ui/aura/window.h"
18 #include "ui/compositor/layer.h"
19 #include "ui/compositor/scoped_layer_animation_settings.h"
20 #include "ui/gfx/transform.h"
21 #include "ui/views/widget/widget.h"
25 ShelfGestureHandler::ShelfGestureHandler()
26 : drag_in_progress_(false) {
29 ShelfGestureHandler::~ShelfGestureHandler() {
32 bool ShelfGestureHandler::ProcessGestureEvent(const ui::GestureEvent& event) {
33 Shell* shell = Shell::GetInstance();
34 if (!shell->session_state_delegate()->NumberOfLoggedInUsers() ||
35 shell->session_state_delegate()->IsScreenLocked()) {
36 // The gestures are disabled in the lock/login screen.
40 // TODO(oshima): Find the root window controller from event's location.
41 RootWindowController* controller = Shell::GetPrimaryRootWindowController();
43 ShelfLayoutManager* shelf = controller->GetShelfLayoutManager();
45 if (event.type() == ui::ET_GESTURE_WIN8_EDGE_SWIPE) {
46 shelf->OnGestureEdgeSwipe(event);
50 const aura::Window* fullscreen = controller->GetWindowForFullscreenMode();
52 ash::wm::GetWindowState(fullscreen)->hide_shelf_when_fullscreen()) {
56 if (event.type() == ui::ET_GESTURE_SCROLL_BEGIN) {
57 drag_in_progress_ = true;
58 shelf->StartGestureDrag(event);
62 if (!drag_in_progress_)
65 if (event.type() == ui::ET_GESTURE_SCROLL_UPDATE) {
67 if (!tray_handler_->UpdateGestureDrag(event))
68 tray_handler_.reset();
69 } else if (shelf->UpdateGestureDrag(event) ==
70 ShelfLayoutManager::DRAG_TRAY) {
71 tray_handler_.reset(new TrayGestureHandler());
77 drag_in_progress_ = false;
79 if (event.type() == ui::ET_GESTURE_SCROLL_END ||
80 event.type() == ui::ET_SCROLL_FLING_START) {
82 tray_handler_->CompleteGestureDrag(event);
83 tray_handler_.reset();
86 shelf->CompleteGestureDrag(event);
90 // Unexpected event. Reset the state and let the event fall through.
91 shelf->CancelGestureDrag();