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 ASH_DISPLAY_DISPLAY_CHANGE_OBSERVER_X11_H 6#define ASH_DISPLAY_DISPLAY_CHANGE_OBSERVER_X11_H 7 8#include <X11/Xlib.h> 9 10// Xlib.h defines RootWindow. 11#undef RootWindow 12 13#include "ash/ash_export.h" 14#include "ash/shell_observer.h" 15#include "base/basictypes.h" 16#include "chromeos/display/output_configurator.h" 17 18namespace ash { 19namespace internal { 20 21// An object that observes changes in display configuration and 22// update DisplayManagers. 23class DisplayChangeObserverX11 24 : public chromeos::OutputConfigurator::StateController, 25 public chromeos::OutputConfigurator::Observer, 26 public ShellObserver { 27 public: 28 DisplayChangeObserverX11(); 29 virtual ~DisplayChangeObserverX11(); 30 31 // chromeos::OutputConfigurator::StateController overrides: 32 virtual chromeos::OutputState GetStateForDisplayIds( 33 const std::vector<int64>& outputs) const OVERRIDE; 34 virtual bool GetResolutionForDisplayId(int64 display_id, 35 int* width, 36 int* height) const OVERRIDE; 37 38 // Overriden from chromeos::OutputConfigurator::Observer: 39 virtual void OnDisplayModeChanged() OVERRIDE; 40 41 // Overriden from ShellObserver: 42 virtual void OnAppTerminating() OVERRIDE; 43 44 private: 45 Display* xdisplay_; 46 47 ::Window x_root_window_; 48 49 int xrandr_event_base_; 50 51 DISALLOW_COPY_AND_ASSIGN(DisplayChangeObserverX11); 52}; 53 54} // namespace internal 55} // namespace ash 56 57#endif // ASH_DISPLAY_AURA_DISPLAY_CHANGE_OBSERVER_X11_H 58