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      1 // Copyright 2014 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 ASH_HOST_ASH_WINDOW_TREE_HOST_H_
      6 #define ASH_HOST_ASH_WINDOW_TREE_HOST_H_
      7 
      8 #include "ash/ash_export.h"
      9 #include "base/memory/scoped_ptr.h"
     10 
     11 namespace aura {
     12 class Window;
     13 class WindowTreeHost;
     14 }
     15 
     16 namespace gfx {
     17 class Insets;
     18 class Rect;
     19 }
     20 
     21 namespace ash {
     22 struct AshWindowTreeHostInitParams;
     23 class RootWindowTransformer;
     24 
     25 class ASH_EXPORT AshWindowTreeHost {
     26  public:
     27   virtual ~AshWindowTreeHost() {}
     28 
     29   // Creates a new AshWindowTreeHost. The caller owns the returned value.
     30   static AshWindowTreeHost* Create(
     31       const AshWindowTreeHostInitParams& init_params);
     32 
     33   // Toggles the host's full screen state.
     34   virtual void ToggleFullScreen() = 0;
     35 
     36   // Clips the cursor to the bounds of the root window until UnConfineCursor().
     37   // We would like to be able to confine the cursor to that window. However,
     38   // currently, we do not have such functionality in X. So we just confine
     39   // to the root window. This is ok because this option is currently only
     40   // being used in fullscreen mode, so root_window bounds = window bounds.
     41   virtual bool ConfineCursorToRootWindow() = 0;
     42   virtual void UnConfineCursor() = 0;
     43 
     44   virtual void SetRootWindowTransformer(
     45       scoped_ptr<RootWindowTransformer> transformer) = 0;
     46 
     47   virtual gfx::Insets GetHostInsets() const = 0;
     48 
     49   virtual aura::WindowTreeHost* AsWindowTreeHost() = 0;
     50 
     51   // Updates the display IDs associated with this root window.
     52   // A root window can be associated with up to 2 display IDs (e.g. in mirror
     53   // mode dual monitors case). If the root window is only associated with one
     54   // display id, then the other id should be set to
     55   // gfx::Display::kInvalidDisplayID.
     56   virtual void UpdateDisplayID(int64 id1, int64 id2) {}
     57 
     58   // Stop listening for events in preparation for shutdown.
     59   virtual void PrepareForShutdown() {}
     60 };
     61 
     62 }  // namespace ash
     63 
     64 #endif  // ASH_HOST_ASH_WINDOW_TREE_HOST_H_
     65