1/* 2 * Copyright (C) 2014 Apple Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26#import "config.h" 27#import "RemoteLayerTreeDisplayRefreshMonitor.h" 28 29#if USE(REQUEST_ANIMATION_FRAME_DISPLAY_MONITOR) 30 31#import <wtf/CurrentTime.h> 32 33using namespace WebCore; 34 35namespace WebKit { 36 37RemoteLayerTreeDisplayRefreshMonitor::RemoteLayerTreeDisplayRefreshMonitor(PlatformDisplayID displayID, RemoteLayerTreeDrawingArea& drawingArea) 38 : DisplayRefreshMonitor(displayID) 39 , m_drawingArea(drawingArea) 40{ 41} 42 43RemoteLayerTreeDisplayRefreshMonitor::~RemoteLayerTreeDisplayRefreshMonitor() 44{ 45 m_drawingArea.willDestroyDisplayRefreshMonitor(this); 46} 47 48bool RemoteLayerTreeDisplayRefreshMonitor::requestRefreshCallback() 49{ 50 if (!isActive()) 51 return false; 52 53 if (!isScheduled()) 54 static_cast<DrawingArea&>(m_drawingArea).scheduleCompositingLayerFlush(); 55 56 setIsActive(true); 57 setIsScheduled(true); 58 return true; 59} 60 61void RemoteLayerTreeDisplayRefreshMonitor::didUpdateLayers() 62{ 63 setIsScheduled(false); 64 65 if (!isPreviousFrameDone()) 66 return; 67 68 setIsPreviousFrameDone(false); 69 setMonotonicAnimationStartTime(monotonicallyIncreasingTime()); 70 71 handleDisplayRefreshedNotificationOnMainThread(this); 72} 73 74} 75 76#endif // USE(REQUEST_ANIMATION_FRAME_DISPLAY_MONITOR) 77