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      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_AURA_ROOT_WINDOW_HOST_X11_H_
      6 #define UI_AURA_ROOT_WINDOW_HOST_X11_H_
      7 
      8 #include <X11/Xlib.h>
      9 
     10 #include <vector>
     11 
     12 // Get rid of a macro from Xlib.h that conflicts with Aura's RootWindow class.
     13 #undef RootWindow
     14 
     15 #include "base/memory/scoped_ptr.h"
     16 #include "base/message_loop/message_loop.h"
     17 #include "ui/aura/aura_export.h"
     18 #include "ui/aura/env_observer.h"
     19 #include "ui/aura/window_tree_host.h"
     20 #include "ui/base/x/x11_util.h"
     21 #include "ui/events/event_source.h"
     22 #include "ui/gfx/insets.h"
     23 #include "ui/gfx/rect.h"
     24 #include "ui/gfx/x/x11_atom_cache.h"
     25 
     26 namespace ui {
     27 class MouseEvent;
     28 }
     29 
     30 namespace aura {
     31 
     32 namespace internal {
     33 class TouchEventCalibrate;
     34 }
     35 
     36 class AURA_EXPORT RootWindowHostX11 : public RootWindowHost,
     37                                       public base::MessageLoop::Dispatcher,
     38                                       public ui::EventSource,
     39                                       public EnvObserver {
     40  public:
     41   explicit RootWindowHostX11(const gfx::Rect& bounds);
     42   virtual ~RootWindowHostX11();
     43 
     44   // Overridden from Dispatcher overrides:
     45   virtual bool Dispatch(const base::NativeEvent& event) OVERRIDE;
     46 
     47   // RootWindowHost Overrides.
     48   virtual RootWindow* GetRootWindow() OVERRIDE;
     49   virtual gfx::AcceleratedWidget GetAcceleratedWidget() OVERRIDE;
     50   virtual void Show() OVERRIDE;
     51   virtual void Hide() OVERRIDE;
     52   virtual void ToggleFullScreen() OVERRIDE;
     53   virtual gfx::Rect GetBounds() const OVERRIDE;
     54   virtual void SetBounds(const gfx::Rect& bounds) OVERRIDE;
     55   virtual gfx::Insets GetInsets() const OVERRIDE;
     56   virtual void SetInsets(const gfx::Insets& insets) OVERRIDE;
     57   virtual gfx::Point GetLocationOnNativeScreen() const OVERRIDE;
     58   virtual void SetCapture() OVERRIDE;
     59   virtual void ReleaseCapture() OVERRIDE;
     60   virtual void SetCursor(gfx::NativeCursor cursor_type) OVERRIDE;
     61   virtual bool QueryMouseLocation(gfx::Point* location_return) OVERRIDE;
     62   virtual bool ConfineCursorToRootWindow() OVERRIDE;
     63   virtual void UnConfineCursor() OVERRIDE;
     64   virtual void OnCursorVisibilityChanged(bool show) OVERRIDE;
     65   virtual void MoveCursorTo(const gfx::Point& location) OVERRIDE;
     66   virtual void PostNativeEvent(const base::NativeEvent& event) OVERRIDE;
     67   virtual void OnDeviceScaleFactorChanged(float device_scale_factor) OVERRIDE;
     68   virtual void PrepareForShutdown() OVERRIDE;
     69 
     70   // EnvObserver overrides.
     71   virtual void OnWindowInitialized(Window* window) OVERRIDE;
     72   virtual void OnRootWindowInitialized(RootWindow* root_window) OVERRIDE;
     73 
     74   // ui::EventSource overrides.
     75   virtual ui::EventProcessor* GetEventProcessor() OVERRIDE;
     76 
     77  private:
     78   class MouseMoveFilter;
     79 
     80   bool DispatchEventForRootWindow(const base::NativeEvent& event);
     81 
     82   // Dispatches XI2 events. Note that some events targetted for the X root
     83   // window are dispatched to the aura root window (e.g. touch events after
     84   // calibration).
     85   void DispatchXI2Event(const base::NativeEvent& event);
     86 
     87   // Returns true if there's an X window manager present... in most cases.  Some
     88   // window managers (notably, ion3) don't implement enough of ICCCM for us to
     89   // detect that they're there.
     90   bool IsWindowManagerPresent();
     91 
     92   // Sets the cursor on |xwindow_| to |cursor|.  Does not check or update
     93   // |current_cursor_|.
     94   void SetCursorInternal(gfx::NativeCursor cursor);
     95 
     96   // Translates the native mouse location into screen coordinates and and
     97   // dispatches the event to RootWindowHostDelegate.
     98   void TranslateAndDispatchMouseEvent(ui::MouseEvent* event);
     99 
    100   // Update is_internal_display_ based on delegate_ state
    101   void UpdateIsInternalDisplay();
    102 
    103   // Set the CrOS touchpad "tap paused" property. It is used to temporarily
    104   // turn off the Tap-to-click feature when the mouse pointer is invisible.
    105   void SetCrOSTapPaused(bool state);
    106 
    107   // The display and the native X window hosting the root window.
    108   XDisplay* xdisplay_;
    109   ::Window xwindow_;
    110 
    111   // The native root window.
    112   ::Window x_root_window_;
    113 
    114   // Current Aura cursor.
    115   gfx::NativeCursor current_cursor_;
    116 
    117   // Is the window mapped to the screen?
    118   bool window_mapped_;
    119 
    120   // The bounds of |xwindow_|.
    121   gfx::Rect bounds_;
    122 
    123   // The insets that specifies the effective area within the |window_|.
    124   gfx::Insets insets_;
    125 
    126   // True if the root host resides on the internal display
    127   bool is_internal_display_;
    128 
    129   scoped_ptr<XID[]> pointer_barriers_;
    130 
    131   scoped_ptr<internal::TouchEventCalibrate> touch_calibrate_;
    132 
    133   scoped_ptr<MouseMoveFilter> mouse_move_filter_;
    134 
    135   ui::X11AtomCache atom_cache_;
    136 
    137   // Touch ids of which the touch press happens at side bezel region.
    138   uint32 bezel_tracking_ids_;
    139 
    140   DISALLOW_COPY_AND_ASSIGN(RootWindowHostX11);
    141 };
    142 
    143 namespace test {
    144 
    145 // Set the default value of the override redirect flag used to
    146 // create a X window for RootWindowHostX11.
    147 AURA_EXPORT void SetUseOverrideRedirectWindowByDefault(bool override_redirect);
    148 
    149 }  // namespace test
    150 }  // namespace aura
    151 
    152 #endif  // UI_AURA_ROOT_WINDOW_HOST_X11_H_
    153