multi_window_resize_controller.h revision 5821806d5e7f356e8fa4b058a389a808ea183019
15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Copyright (c) 2012 The Chromium Authors. All rights reserved. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// found in the LICENSE file. 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifndef ASH_WM_WORKSPACE_MULTI_WINDOW_RESIZE_CONTROLLER_H_ 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define ASH_WM_WORKSPACE_MULTI_WINDOW_RESIZE_CONTROLLER_H_ 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <vector> 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ash/ash_export.h" 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/basictypes.h" 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/memory/scoped_ptr.h" 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/timer.h" 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ui/aura/window_observer.h" 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ui/gfx/rect.h" 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ui/views/mouse_watcher.h" 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace aura { 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class Window; 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace views { 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class Widget; 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace ash { 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace internal { 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class MultiWindowResizeControllerTest; 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class WorkspaceWindowResizer; 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Two directions resizes happen in. 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)enum Direction { 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) TOP_BOTTOM, 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) LEFT_RIGHT, 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// MultiWindowResizeController is responsible for determining and showing a 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// widget that allows resizing multiple windows at the same time. 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// MultiWindowResizeController is driven by WorkspaceEventFilter. 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class ASH_EXPORT MultiWindowResizeController : 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) public views::MouseWatcherListener, public aura::WindowObserver { 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) public: 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) MultiWindowResizeController(); 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual ~MultiWindowResizeController(); 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // If necessary, shows the resize widget. |window| is the window the mouse 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // is over, |component| the edge and |point| the location of the mouse. 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void Show(aura::Window* window, int component, const gfx::Point& point); 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Hides the resize widget. 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void Hide(); 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // MouseWatcherListenre overrides: 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual void MouseMovedOutOfHost() OVERRIDE; 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // WindowObserver overrides: 585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual void OnWindowDestroying(aura::Window* window) OVERRIDE; 595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) private: 615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) friend class MultiWindowResizeControllerTest; 625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Used to track the two resizable windows and direction. 645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) struct ResizeWindows { 655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ResizeWindows(); 665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ~ResizeWindows(); 675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Returns true if |other| equals this ResizeWindows. This does *not* 695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // consider the windows in |other_windows|. 705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool Equals(const ResizeWindows& other) const; 715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Returns true if this ResizeWindows is valid. 735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool is_valid() const { return window1 && window2; } 745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // The left/top window to resize. 765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) aura::Window* window1; 775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Other window to resize. 795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) aura::Window* window2; 805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Direction 825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Direction direction; 835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Windows after |window2| that are to be resized. Determined at the time 855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // the resize starts. 865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::vector<aura::Window*> other_windows; 875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) }; 885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) class ResizeMouseWatcherHost; 905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) class ResizeView; 915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Returns a ResizeWindows based on the specified arguments. Use is_valid() 935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // to test if the return value is a valid multi window resize location. 945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ResizeWindows DetermineWindows(aura::Window* window, 955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int window_component, 965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const gfx::Point& point) const; 975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Variant of DetermineWindows() that uses the current location of the mouse 995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // to determine the resize windows. 1005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ResizeWindows DetermineWindowsFromScreenPoint(aura::Window* window) const; 1015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Finds a window by edge (one of the constants HitTestCompat. 1035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) aura::Window* FindWindowByEdge(aura::Window* window_to_ignore, 1045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int edge_want, 1055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int x, 1065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int y) const; 1075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Returns the first window touching |window|. 1095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) aura::Window* FindWindowTouching(aura::Window* window, 1105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Direction direction) const; 1115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Places any windows touching |start| into |others|. 1135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void FindWindowsTouching(aura::Window* start, 1145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Direction direction, 1155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::vector<aura::Window*>* others) const; 1165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Hides the window after a delay. 1185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void DelayedHide(); 1195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Shows the resizer if the mouse is still at a valid location. This is called 1215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // from the |show_timer_|. 1225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void ShowIfValidMouseLocation(); 1235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Shows the widget immediately. 1255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void ShowNow(); 1265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Returns true if the widget is showing. 1285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool IsShowing() const; 1295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Initiates a resize. 1315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void StartResize(const gfx::Point& location_in_screen); 1325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Resizes to the new location. 1345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void Resize(const gfx::Point& location_in_screen, int event_flags); 1355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Completes the resize. 1375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void CompleteResize(int event_flags); 1385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Cancels the resize. 1405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void CancelResize(); 1415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Returns the bounds for the resize widget. 1435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) gfx::Rect CalculateResizeWidgetBounds( 1445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const gfx::Point& location_in_parent) const; 1455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Returns true if |location_in_screen| is over the resize windows 1475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // (or the resize widget itself). 1485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool IsOverWindows(const gfx::Point& location_in_screen) const; 1495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Returns true if |location_in_screen| is over |window|. 1515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool IsOverWindow(aura::Window* window, 1525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const gfx::Point& location_in_screen, 1535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int component) const; 1545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Windows and direction to resize. 1565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ResizeWindows windows_; 1575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Timer before hiding. 1595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::OneShotTimer<MultiWindowResizeController> hide_timer_; 1605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Timer used before showing. 1625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::OneShotTimer<MultiWindowResizeController> show_timer_; 1635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) scoped_ptr<views::Widget> resize_widget_; 1655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // If non-null we're in a resize loop. 1675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) scoped_ptr<WorkspaceWindowResizer> window_resizer_; 1685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Mouse coordinate passed to Show() in container's coodinates. 1705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) gfx::Point show_location_in_parent_; 1715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Bounds the widget was last shown at in screen coordinates. 1735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) gfx::Rect show_bounds_in_screen_; 1745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Used to detect whether the mouse is over the windows. While 1765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // |resize_widget_| is non-NULL (ie the widget is showing) we ignore calls 1775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // to Show(). 1785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) scoped_ptr<views::MouseWatcher> mouse_watcher_; 1795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DISALLOW_COPY_AND_ASSIGN(MultiWindowResizeController); 1815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 1825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace internal 1845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace ash 1855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif // ASH_WM_WORKSPACE_MULTI_WINDOW_RESIZE_CONTROLLER_H_ 187