// Copyright 2013 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. #ifndef ASH_WM_OVERVIEW_WINDOW_OVERVIEW_H_ #define ASH_WM_OVERVIEW_WINDOW_OVERVIEW_H_ #include "base/compiler_specific.h" #include "base/memory/scoped_ptr.h" #include "base/memory/scoped_vector.h" #include "base/time/time.h" #include "ui/aura/window_tracker.h" #include "ui/events/event_handler.h" #include "ui/gfx/rect.h" namespace aura { class Window; namespace client { class CursorClient; } } // namespace aura namespace ui { class LocatedEvent; } namespace views { class Widget; } namespace ash { class WindowSelector; class WindowSelectorItem; // The WindowOverview shows a grid of all of your windows and allows selecting // a window by clicking or tapping on it. It also displays a selection widget // used to indicate the current selection when alt-tabbing between windows. class WindowOverview : public ui::EventHandler { public: typedef ScopedVector<WindowSelectorItem> WindowSelectorItemList; // Enters an overview mode displaying |windows| and dispatches methods // on |window_selector| when a window is selected or selection is canceled. // If |single_root_window| is not NULL, all windows will be positioned on the // given root window. WindowOverview(WindowSelector* window_selector, WindowSelectorItemList* windows, aura::Window* single_root_window); virtual ~WindowOverview(); // Sets the selected window to be the window in position |index|. void SetSelection(size_t index); // Dispatched when the list of windows has changed. void OnWindowsChanged(); // Moves the overview to only |root_window|. void MoveToSingleRootWindow(aura::Window* root_window); // ui::EventHandler: virtual void OnKeyEvent(ui::KeyEvent* event) OVERRIDE; virtual void OnMouseEvent(ui::MouseEvent* event) OVERRIDE; virtual void OnScrollEvent(ui::ScrollEvent* event) OVERRIDE; virtual void OnTouchEvent(ui::TouchEvent* event) OVERRIDE; private: // Returns the target of |event| or NULL if the event is not targeted at // any of the windows in the selector. aura::Window* GetEventTarget(ui::LocatedEvent* event); // Returns the top-level window selected by targeting |window| or NULL if // no overview window was found for |window|. aura::Window* GetTargetedWindow(aura::Window* window); // Hide and track all hidden windows not in overview. void HideAndTrackNonOverviewWindows(); // Position all of the windows based on the current selection mode. void PositionWindows(); // Position all of the windows from |root_window| on |root_window|. void PositionWindowsFromRoot(aura::Window* root_window); // Position all of the |windows| to fit on the |root_window|. void PositionWindowsOnRoot(aura::Window* root_window, const std::vector<WindowSelectorItem*>& windows); // Creates the selection widget. void InitializeSelectionWidget(); // Returns the bounds for the selection widget for the windows_ at |index|. gfx::Rect GetSelectionBounds(size_t index); // Weak pointer to the window selector which owns this class. WindowSelector* window_selector_; // A weak pointer to the collection of windows in the overview wrapped by a // helper class which restores their state and helps transform them to other // root windows. WindowSelectorItemList* windows_; // Widget indicating which window is currently selected. scoped_ptr<views::Widget> selection_widget_; // Index of the currently selected window. This is used to determine when the // selection changes rows and use a different animation. size_t selection_index_; // If NULL, each root window displays an overview of the windows in that // display. Otherwise, all windows are in a single overview on // |single_root_window_|. aura::Window* single_root_window_; // The time when overview was started. base::Time overview_start_time_; // The cursor client used to lock the current cursor during overview. aura::client::CursorClient* cursor_client_; // Tracks windows which were hidden because they were not part of the // overview. aura::WindowTracker hidden_windows_; DISALLOW_COPY_AND_ASSIGN(WindowOverview); }; } // namespace ash #endif // ASH_WM_OVERVIEW_WINDOW_OVERVIEW_H_