ui/views/widget/desktop_aura/desktop_window_tree_host_x11.h

   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.
   4
   5 #ifndef UI_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_WINDOW_TREE_HOST_X11_H_
   6 #define UI_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_WINDOW_TREE_HOST_X11_H_
   7
   8 #include <X11/extensions/shape.h>
   9 #include <X11/Xlib.h>
  10 #include <X11/Xutil.h>
  11
  12 #include "base/basictypes.h"
  13 #include "base/cancelable_callback.h"
  14 #include "base/memory/weak_ptr.h"
  15 #include "base/observer_list.h"
  16 #include "ui/aura/window_tree_host.h"
  17 #include "ui/base/cursor/cursor_loader_x11.h"
  18 #include "ui/events/event_source.h"
  19 #include "ui/events/platform/platform_event_dispatcher.h"
  20 #include "ui/gfx/geometry/insets.h"
  21 #include "ui/gfx/geometry/rect.h"
  22 #include "ui/gfx/geometry/size.h"
  23 #include "ui/gfx/x/x11_atom_cache.h"
  24 #include "ui/views/views_export.h"
  25 #include "ui/views/widget/desktop_aura/desktop_window_tree_host.h"
  26
  27 namespace gfx {
  28 class ImageSkia;
  29 class ImageSkiaRep;
  30 }
  31
  32 namespace ui {
  33 class EventHandler;
  34 }
  35
  36 namespace views {
  37 class DesktopDragDropClientAuraX11;
  38 class DesktopDispatcherClient;
  39 class DesktopWindowTreeHostObserverX11;
  40 class X11DesktopWindowMoveClient;
  41 class X11WindowEventFilter;
  42
  43 class VIEWS_EXPORT DesktopWindowTreeHostX11
  44     : public DesktopWindowTreeHost,
  45       public aura::WindowTreeHost,
  46       public ui::EventSource,
  47       public ui::PlatformEventDispatcher {
  48  public:
  49   DesktopWindowTreeHostX11(
  50       internal::NativeWidgetDelegate* native_widget_delegate,
  51       DesktopNativeWidgetAura* desktop_native_widget_aura);
  52   ~DesktopWindowTreeHostX11() override;
  53
  54   // A way of converting an X11 |xid| host window into a |content_window_|.
  55   static aura::Window* GetContentWindowForXID(XID xid);
  56
  57   // A way of converting an X11 |xid| host window into this object.
  58   static DesktopWindowTreeHostX11* GetHostForXID(XID xid);
  59
  60   // Get all open top-level windows. This includes windows that may not be
  61   // visible. This list is sorted in their stacking order, i.e. the first window
  62   // is the topmost window.
  63   static std::vector<aura::Window*> GetAllOpenWindows();
  64
  65   // Returns the current bounds in terms of the X11 Root Window.
  66   gfx::Rect GetX11RootWindowBounds() const;
  67
  68   // Returns the current bounds in terms of the X11 Root Window including the
  69   // borders provided by the window manager (if any).
  70   gfx::Rect GetX11RootWindowOuterBounds() const;
  71
  72   // Returns the window shape if the window is not rectangular. Returns NULL
  73   // otherwise.
  74   ::Region GetWindowShape() const;
  75
  76   // Called by X11DesktopHandler to notify us that the native windowing system
  77   // has changed our activation.
  78   void HandleNativeWidgetActivationChanged(bool active);
  79
  80   void AddObserver(views::DesktopWindowTreeHostObserverX11* observer);
  81   void RemoveObserver(views::DesktopWindowTreeHostObserverX11* observer);
  82
  83   // Swaps the current handler for events in the non client view with |handler|.
  84   void SwapNonClientEventHandler(scoped_ptr<ui::EventHandler> handler);
  85
  86   // Deallocates the internal list of open windows.
  87   static void CleanUpWindowList();
  88
  89  protected:
  90   // Overridden from DesktopWindowTreeHost:
  91   void Init(aura::Window* content_window,
  92             const Widget::InitParams& params) override;
  93   void OnNativeWidgetCreated(const Widget::InitParams& params) override;
  94   scoped_ptr<corewm::Tooltip> CreateTooltip() override;
  95   scoped_ptr<aura::client::DragDropClient> CreateDragDropClient(
  96       DesktopNativeCursorManager* cursor_manager) override;
  97   void Close() override;
  98   void CloseNow() override;
  99   aura::WindowTreeHost* AsWindowTreeHost() override;
 100   void ShowWindowWithState(ui::WindowShowState show_state) override;
 101   void ShowMaximizedWithBounds(const gfx::Rect& restored_bounds) override;
 102   bool IsVisible() const override;
 103   void SetSize(const gfx::Size& requested_size) override;
 104   void StackAtTop() override;
 105   void CenterWindow(const gfx::Size& size) override;
 106   void GetWindowPlacement(gfx::Rect* bounds,
 107                           ui::WindowShowState* show_state) const override;
 108   gfx::Rect GetWindowBoundsInScreen() const override;
 109   gfx::Rect GetClientAreaBoundsInScreen() const override;
 110   gfx::Rect GetRestoredBounds() const override;
 111   gfx::Rect GetWorkAreaBoundsInScreen() const override;
 112   void SetShape(gfx::NativeRegion native_region) override;
 113   void Activate() override;
 114   void Deactivate() override;
 115   bool IsActive() const override;
 116   void Maximize() override;
 117   void Minimize() override;
 118   void Restore() override;
 119   bool IsMaximized() const override;
 120   bool IsMinimized() const override;
 121   bool HasCapture() const override;
 122   void SetAlwaysOnTop(bool always_on_top) override;
 123   bool IsAlwaysOnTop() const override;
 124   void SetVisibleOnAllWorkspaces(bool always_visible) override;
 125   bool SetWindowTitle(const base::string16& title) override;
 126   void ClearNativeFocus() override;
 127   Widget::MoveLoopResult RunMoveLoop(
 128       const gfx::Vector2d& drag_offset,
 129       Widget::MoveLoopSource source,
 130       Widget::MoveLoopEscapeBehavior escape_behavior) override;
 131   void EndMoveLoop() override;
 132   void SetVisibilityChangedAnimationsEnabled(bool value) override;
 133   bool ShouldUseNativeFrame() const override;
 134   bool ShouldWindowContentsBeTransparent() const override;
 135   void FrameTypeChanged() override;
 136   void SetFullscreen(bool fullscreen) override;
 137   bool IsFullscreen() const override;
 138   void SetOpacity(unsigned char opacity) override;
 139   void SetWindowIcons(const gfx::ImageSkia& window_icon,
 140                       const gfx::ImageSkia& app_icon) override;
 141   void InitModalType(ui::ModalType modal_type) override;
 142   void FlashFrame(bool flash_frame) override;
 143   void OnRootViewLayout() override;
 144   void OnNativeWidgetFocus() override;
 145   void OnNativeWidgetBlur() override;
 146   bool IsAnimatingClosed() const override;
 147   bool IsTranslucentWindowOpacitySupported() const override;
 148   void SizeConstraintsChanged() override;
 149
 150   // Overridden from aura::WindowTreeHost:
 151   gfx::Transform GetRootTransform() const override;
 152   ui::EventSource* GetEventSource() override;
 153   gfx::AcceleratedWidget GetAcceleratedWidget() override;
 154   void Show() override;
 155   void Hide() override;
 156   gfx::Rect GetBounds() const override;
 157   void SetBounds(const gfx::Rect& requested_bounds_in_pixels) override;
 158   gfx::Point GetLocationOnNativeScreen() const override;
 159   void SetCapture() override;
 160   void ReleaseCapture() override;
 161   void SetCursorNative(gfx::NativeCursor cursor) override;
 162   void MoveCursorToNative(const gfx::Point& location) override;
 163   void OnCursorVisibilityChangedNative(bool show) override;
 164
 165   // Overridden frm ui::EventSource
 166   ui::EventProcessor* GetEventProcessor() override;
 167
 168  private:
 169   friend class DesktopWindowTreeHostX11HighDPITest;
 170   // Initializes our X11 surface to draw on. This method performs all
 171   // initialization related to talking to the X11 server.
 172   void InitX11Window(const Widget::InitParams& params);
 173
 174   // Creates an aura::WindowEventDispatcher to contain the |content_window|,
 175   // along with all aura client objects that direct behavior.
 176   aura::WindowEventDispatcher* InitDispatcher(const Widget::InitParams& params);
 177
 178   // Adjusts |requested_size| to avoid the WM "feature" where setting the
 179   // window size to the monitor size causes the WM to set the EWMH for
 180   // fullscreen.
 181   gfx::Size AdjustSize(const gfx::Size& requested_size);
 182
 183   // Called when |xwindow_|'s _NET_WM_STATE property is updated.
 184   void OnWMStateUpdated();
 185
 186   // Called when |xwindow_|'s _NET_FRAME_EXTENTS property is updated.
 187   void OnFrameExtentsUpdated();
 188
 189   // Updates |xwindow_|'s minimum and maximum size.
 190   void UpdateMinAndMaxSize();
 191
 192   // Updates |xwindow_|'s _NET_WM_USER_TIME if |xwindow_| is active.
 193   void UpdateWMUserTime(const ui::PlatformEvent& event);
 194
 195   // Sends a message to the x11 window manager, enabling or disabling the
 196   // states |state1| and |state2|.
 197   void SetWMSpecState(bool enabled, ::Atom state1, ::Atom state2);
 198
 199   // Checks if the window manager has set a specific state.
 200   bool HasWMSpecProperty(const char* property) const;
 201
 202   // Sets whether the window's borders are provided by the window manager.
 203   void SetUseNativeFrame(bool use_native_frame);
 204
 205   // Dispatches a mouse event, taking mouse capture into account. If a
 206   // different host has capture, we translate the event to its coordinate space
 207   // and dispatch it to that host instead.
 208   void DispatchMouseEvent(ui::MouseEvent* event);
 209
 210   // Dispatches a touch event, taking capture into account. If a different host
 211   // has capture, then touch-press events are translated to its coordinate space
 212   // and dispatched to that host instead.
 213   void DispatchTouchEvent(ui::TouchEvent* event);
 214
 215   // Updates the location of |located_event| to be in |host|'s coordinate system
 216   // so that it can be dispatched to |host|.
 217   void ConvertEventToDifferentHost(ui::LocatedEvent* located_event,
 218                                    DesktopWindowTreeHostX11* host);
 219
 220   // Resets the window region for the current widget bounds if necessary.
 221   void ResetWindowRegion();
 222
 223   // Serializes an image to the format used by _NET_WM_ICON.
 224   void SerializeImageRepresentation(const gfx::ImageSkiaRep& rep,
 225                                     std::vector<unsigned long>* data);
 226
 227   // Returns an 8888 ARGB visual. Can return NULL if there is no matching
 228   // visual on this display.
 229   Visual* GetARGBVisual();
 230
 231   // See comment for variable open_windows_.
 232   static std::list<XID>& open_windows();
 233
 234   // Map the window (shows it) taking into account the given |show_state|.
 235   void MapWindow(ui::WindowShowState show_state);
 236
 237   void SetWindowTransparency();
 238
 239   // Relayout the widget's client and non-client views.
 240   void Relayout();
 241
 242   // ui::PlatformEventDispatcher:
 243   bool CanDispatchEvent(const ui::PlatformEvent& event) override;
 244   uint32_t DispatchEvent(const ui::PlatformEvent& event) override;
 245
 246   void DelayedResize(const gfx::Size& size_in_pixels);
 247
 248   gfx::Rect GetWorkAreaBoundsInPixels() const;
 249   gfx::Rect ToDIPRect(const gfx::Rect& rect_in_pixels) const;
 250   gfx::Rect ToPixelRect(const gfx::Rect& rect_in_dip) const;
 251
 252   // X11 things
 253   // The display and the native X window hosting the root window.
 254   XDisplay* xdisplay_;
 255   ::Window xwindow_;
 256
 257   // The native root window.
 258   ::Window x_root_window_;
 259
 260   ui::X11AtomCache atom_cache_;
 261
 262   // Is the window mapped to the screen?
 263   bool window_mapped_;
 264
 265   // The bounds of |xwindow_|.
 266   gfx::Rect bounds_in_pixels_;
 267
 268   // Whenever the bounds are set, we keep the previous set of bounds around so
 269   // we can have a better chance of getting the real
 270   // |restored_bounds_in_pixels_|. Window managers tend to send a Configure
 271   // message with the maximized bounds, and then set the window maximized
 272   // property. (We don't rely on this for when we request that the window be
 273   // maximized, only when we detect that some other process has requested that
 274   // we become the maximized window.)
 275   gfx::Rect previous_bounds_in_pixels_;
 276
 277   // The bounds of our window before we were maximized.
 278   gfx::Rect restored_bounds_in_pixels_;
 279
 280   // |xwindow_|'s minimum size.
 281   gfx::Size min_size_in_pixels_;
 282
 283   // |xwindow_|'s maximum size.
 284   gfx::Size max_size_in_pixels_;
 285
 286   // The window manager state bits.
 287   std::set< ::Atom> window_properties_;
 288
 289   // Whether |xwindow_| was requested to be fullscreen via SetFullscreen().
 290   bool is_fullscreen_;
 291
 292   // True if the window should stay on top of most other windows.
 293   bool is_always_on_top_;
 294
 295   // True if the window has title-bar / borders provided by the window manager.
 296   bool use_native_frame_;
 297
 298   // True if a Maximize() call should be done after mapping the window.
 299   bool should_maximize_after_map_;
 300
 301   // Whether we used an ARGB visual for our window.
 302   bool use_argb_visual_;
 303
 304   DesktopDragDropClientAuraX11* drag_drop_client_;
 305
 306   scoped_ptr<ui::EventHandler> x11_non_client_event_filter_;
 307   scoped_ptr<X11DesktopWindowMoveClient> x11_window_move_client_;
 308
 309   // TODO(beng): Consider providing an interface to DesktopNativeWidgetAura
 310   //             instead of providing this route back to Widget.
 311   internal::NativeWidgetDelegate* native_widget_delegate_;
 312
 313   DesktopNativeWidgetAura* desktop_native_widget_aura_;
 314
 315   aura::Window* content_window_;
 316
 317   // We can optionally have a parent which can order us to close, or own
 318   // children who we're responsible for closing when we CloseNow().
 319   DesktopWindowTreeHostX11* window_parent_;
 320   std::set<DesktopWindowTreeHostX11*> window_children_;
 321
 322   ObserverList<DesktopWindowTreeHostObserverX11> observer_list_;
 323
 324   // The window shape if the window is non-rectangular.
 325   gfx::XScopedPtr<_XRegion, gfx::XObjectDeleter<_XRegion, int, XDestroyRegion>>
 326       window_shape_;
 327
 328   // Whether |window_shape_| was set via SetShape().
 329   bool custom_window_shape_;
 330
 331   // The size of the window manager provided borders (if any).
 332   gfx::Insets native_window_frame_borders_in_pixels_;
 333
 334   // The current DesktopWindowTreeHostX11 which has capture. Set synchronously
 335   // when capture is requested via SetCapture().
 336   static DesktopWindowTreeHostX11* g_current_capture;
 337
 338   // A list of all (top-level) windows that have been created but not yet
 339   // destroyed.
 340   static std::list<XID>* open_windows_;
 341
 342   base::string16 window_title_;
 343
 344   // Whether we currently are flashing our frame. This feature is implemented
 345   // by setting the urgency hint with the window manager, which can draw
 346   // attention to the window or completely ignore the hint. We stop flashing
 347   // the frame when |xwindow_| gains focus or handles a mouse button event.
 348   bool urgency_hint_set_;
 349
 350   base::CancelableCallback<void()> delayed_resize_task_;
 351
 352   base::WeakPtrFactory<DesktopWindowTreeHostX11> close_widget_factory_;
 353
 354   DISALLOW_COPY_AND_ASSIGN(DesktopWindowTreeHostX11);
 355 };
 356
 357 }  // namespace views
 358
 359 #endif  // UI_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_WINDOW_TREE_HOST_X11_H_