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/*
* Copyright (C) 2010, 2014 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef DisplayRefreshMonitorManager_h
#define DisplayRefreshMonitorManager_h
#if USE(REQUEST_ANIMATION_FRAME_DISPLAY_MONITOR)
#include "DisplayRefreshMonitor.h"
#include "PlatformScreen.h"
#include <wtf/HashMap.h>
#include <wtf/NeverDestroyed.h>
#include <wtf/RefPtr.h>
namespace WebCore {
class DisplayRefreshMonitorManager {
friend class NeverDestroyed<DisplayRefreshMonitorManager>;
public:
static DisplayRefreshMonitorManager& sharedManager();
void registerClient(DisplayRefreshMonitorClient*);
void unregisterClient(DisplayRefreshMonitorClient*);
bool scheduleAnimation(DisplayRefreshMonitorClient*);
void windowScreenDidChange(PlatformDisplayID, DisplayRefreshMonitorClient*);
private:
friend class DisplayRefreshMonitor;
void displayDidRefresh(DisplayRefreshMonitor*);
DisplayRefreshMonitorManager() { }
virtual ~DisplayRefreshMonitorManager();
DisplayRefreshMonitor* ensureMonitorForClient(DisplayRefreshMonitorClient*);
// We know nothing about the values of PlatformDisplayIDs, so use UnsignedWithZeroKeyHashTraits.
// FIXME: Since we know nothing about these values, this is not sufficient.
// Even with UnsignedWithZeroKeyHashTraits, there are still two special values used for empty and deleted hash table slots.
typedef HashMap<uint64_t, RefPtr<DisplayRefreshMonitor>, WTF::IntHash<uint64_t>, WTF::UnsignedWithZeroKeyHashTraits<uint64_t>> DisplayRefreshMonitorMap;
DisplayRefreshMonitorMap m_monitors;
};
}
#endif // USE(REQUEST_ANIMATION_FRAME_DISPLAY_MONITOR)
#endif
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