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// 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 "ash/wm/gestures/shelf_gesture_handler.h"
#include "ash/root_window_controller.h"
#include "ash/session/session_state_delegate.h"
#include "ash/shelf/shelf_layout_manager.h"
#include "ash/shelf/shelf_types.h"
#include "ash/shelf/shelf_widget.h"
#include "ash/shell.h"
#include "ash/system/status_area_widget.h"
#include "ash/wm/gestures/tray_gesture_handler.h"
#include "ash/wm/window_state.h"
#include "ash/wm/window_util.h"
#include "ui/aura/window.h"
#include "ui/compositor/layer.h"
#include "ui/compositor/scoped_layer_animation_settings.h"
#include "ui/gfx/transform.h"
#include "ui/views/widget/widget.h"
namespace ash {
ShelfGestureHandler::ShelfGestureHandler()
: drag_in_progress_(false) {
}
ShelfGestureHandler::~ShelfGestureHandler() {
}
bool ShelfGestureHandler::ProcessGestureEvent(const ui::GestureEvent& event) {
Shell* shell = Shell::GetInstance();
if (!shell->session_state_delegate()->NumberOfLoggedInUsers() ||
shell->session_state_delegate()->IsScreenLocked()) {
// The gestures are disabled in the lock/login screen.
return false;
}
// TODO(oshima): Find the root window controller from event's location.
RootWindowController* controller = Shell::GetPrimaryRootWindowController();
ShelfLayoutManager* shelf = controller->GetShelfLayoutManager();
if (event.type() == ui::ET_GESTURE_WIN8_EDGE_SWIPE) {
shelf->OnGestureEdgeSwipe(event);
return true;
}
const aura::Window* fullscreen = controller->GetWindowForFullscreenMode();
if (fullscreen &&
ash::wm::GetWindowState(fullscreen)->hide_shelf_when_fullscreen()) {
return false;
}
if (event.type() == ui::ET_GESTURE_SCROLL_BEGIN) {
drag_in_progress_ = true;
shelf->StartGestureDrag(event);
return true;
}
if (!drag_in_progress_)
return false;
if (event.type() == ui::ET_GESTURE_SCROLL_UPDATE) {
if (tray_handler_) {
if (!tray_handler_->UpdateGestureDrag(event))
tray_handler_.reset();
} else if (shelf->UpdateGestureDrag(event) ==
ShelfLayoutManager::DRAG_TRAY) {
tray_handler_.reset(new TrayGestureHandler());
}
return true;
}
drag_in_progress_ = false;
if (event.type() == ui::ET_GESTURE_SCROLL_END ||
event.type() == ui::ET_SCROLL_FLING_START) {
if (tray_handler_) {
tray_handler_->CompleteGestureDrag(event);
tray_handler_.reset();
}
shelf->CompleteGestureDrag(event);
return true;
}
// Unexpected event. Reset the state and let the event fall through.
shelf->CancelGestureDrag();
return false;
}
} // namespace ash
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