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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef UI_DISPLAY_CHROMEOS_X11_NATIVE_DISPLAY_EVENT_DISPATCHER_X11_H_
#define UI_DISPLAY_CHROMEOS_X11_NATIVE_DISPLAY_EVENT_DISPATCHER_X11_H_
#include "base/time/tick_clock.h"
#include "base/time/time.h"
#include "ui/display/chromeos/x11/native_display_delegate_x11.h"
#include "ui/events/platform/platform_event_dispatcher.h"
namespace ui {
// The implementation is interested in the cases of RRNotify events which
// correspond to output add/remove events. Note that Output add/remove events
// are sent in response to our own reconfiguration operations so spurious events
// are common. Spurious events will have no effect.
class DISPLAY_EXPORT NativeDisplayEventDispatcherX11
: public ui::PlatformEventDispatcher {
public:
NativeDisplayEventDispatcherX11(
NativeDisplayDelegateX11::HelperDelegate* delegate,
int xrandr_event_base);
virtual ~NativeDisplayEventDispatcherX11();
// ui::PlatformEventDispatcher:
virtual bool CanDispatchEvent(const PlatformEvent& event) override;
virtual uint32_t DispatchEvent(const PlatformEvent& event) override;
void SetTickClockForTest(scoped_ptr<base::TickClock> tick_clock);
// How long the cached output is valid after startup.
static const int kUseCacheAfterStartupMs;
private:
NativeDisplayDelegateX11::HelperDelegate* delegate_; // Not owned.
// The base of the event numbers used to represent XRandr events used in
// decoding events regarding output add/remove.
int xrandr_event_base_;
base::TimeTicks startup_time_;
scoped_ptr<base::TickClock> tick_clock_;
DISALLOW_COPY_AND_ASSIGN(NativeDisplayEventDispatcherX11);
};
} // namespace ui
#endif // UI_DISPLAY_CHROMEOS_X11_NATIVE_DISPLAY_EVENT_DISPATCHER_X11_H_
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