1/* 2 * Copyright (C) 2011 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. AND ITS CONTRIBUTORS ``AS IS'' 14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS 17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 23 * THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26#import "config.h" 27#import "LayerTreeHostCAMac.h" 28 29#import "WebProcess.h" 30#import <QuartzCore/CATransaction.h> 31#import <WebCore/GraphicsLayer.h> 32#import <WebKitSystemInterface.h> 33 34using namespace WebCore; 35 36@interface CATransaction (Details) 37+ (void)synchronize; 38@end 39 40namespace WebKit { 41 42PassRefPtr<LayerTreeHostCAMac> LayerTreeHostCAMac::create(WebPage* webPage) 43{ 44 RefPtr<LayerTreeHostCAMac> host = adoptRef(new LayerTreeHostCAMac(webPage)); 45 host->initialize(); 46 return host.release(); 47} 48 49LayerTreeHostCAMac::LayerTreeHostCAMac(WebPage* webPage) 50 : LayerTreeHostCA(webPage) 51{ 52} 53 54LayerTreeHostCAMac::~LayerTreeHostCAMac() 55{ 56 ASSERT(!m_flushPendingLayerChangesRunLoopObserver); 57 ASSERT(!m_remoteLayerClient); 58} 59 60void LayerTreeHostCAMac::platformInitialize(LayerTreeContext& layerTreeContext) 61{ 62 mach_port_t serverPort = WebProcess::shared().compositingRenderServerPort(); 63 m_remoteLayerClient = WKCARemoteLayerClientMakeWithServerPort(serverPort); 64 65 WKCARemoteLayerClientSetLayer(m_remoteLayerClient.get(), rootLayer()->platformLayer()); 66 67 layerTreeContext.contextID = WKCARemoteLayerClientGetClientId(m_remoteLayerClient.get()); 68} 69 70void LayerTreeHostCAMac::scheduleLayerFlush() 71{ 72 CFRunLoopRef currentRunLoop = CFRunLoopGetCurrent(); 73 74 // Make sure we wake up the loop or the observer could be delayed until some other source fires. 75 CFRunLoopWakeUp(currentRunLoop); 76 77 if (m_flushPendingLayerChangesRunLoopObserver) 78 return; 79 80 // Run before the Core Animation commit observer, which has order 2000000. 81 const CFIndex runLoopOrder = 2000000 - 1; 82 CFRunLoopObserverContext context = { 0, this, 0, 0, 0 }; 83 m_flushPendingLayerChangesRunLoopObserver.adoptCF(CFRunLoopObserverCreate(0, kCFRunLoopBeforeWaiting | kCFRunLoopExit, true, runLoopOrder, flushPendingLayerChangesRunLoopObserverCallback, &context)); 84 85 CFRunLoopAddObserver(currentRunLoop, m_flushPendingLayerChangesRunLoopObserver.get(), kCFRunLoopCommonModes); 86} 87 88void LayerTreeHostCAMac::invalidate() 89{ 90 if (m_flushPendingLayerChangesRunLoopObserver) { 91 CFRunLoopObserverInvalidate(m_flushPendingLayerChangesRunLoopObserver.get()); 92 m_flushPendingLayerChangesRunLoopObserver = nullptr; 93 } 94 95 WKCARemoteLayerClientInvalidate(m_remoteLayerClient.get()); 96 m_remoteLayerClient = nullptr; 97 98 LayerTreeHostCA::invalidate(); 99} 100 101void LayerTreeHostCAMac::sizeDidChange(const IntSize& newSize) 102{ 103 LayerTreeHostCA::sizeDidChange(newSize); 104 [CATransaction flush]; 105 [CATransaction synchronize]; 106} 107 108void LayerTreeHostCAMac::forceRepaint() 109{ 110 LayerTreeHostCA::forceRepaint(); 111 [CATransaction flush]; 112 [CATransaction synchronize]; 113} 114 115void LayerTreeHostCAMac::pauseRendering() 116{ 117 CALayer* root = rootLayer()->platformLayer(); 118 [root setValue:(id)kCFBooleanTrue forKey:@"NSCAViewRenderPaused"]; 119 [[NSNotificationCenter defaultCenter] postNotificationName:@"NSCAViewRenderDidPauseNotification" object:nil userInfo:[NSDictionary dictionaryWithObject:root forKey:@"layer"]]; 120} 121 122void LayerTreeHostCAMac::resumeRendering() 123{ 124 CALayer* root = rootLayer()->platformLayer(); 125 [root setValue:(id)kCFBooleanFalse forKey:@"NSCAViewRenderPaused"]; 126 [[NSNotificationCenter defaultCenter] postNotificationName:@"NSCAViewRenderDidResumeNotification" object:nil userInfo:[NSDictionary dictionaryWithObject:root forKey:@"layer"]]; 127} 128 129void LayerTreeHostCAMac::flushPendingLayerChangesRunLoopObserverCallback(CFRunLoopObserverRef, CFRunLoopActivity, void* context) 130{ 131 // This gets called outside of the normal event loop so wrap in an autorelease pool 132 NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init]; 133 static_cast<LayerTreeHostCAMac*>(context)->performScheduledLayerFlush(); 134 [pool drain]; 135} 136 137void LayerTreeHostCAMac::didPerformScheduledLayerFlush() 138{ 139 // We successfully flushed the pending layer changes, remove the run loop observer. 140 ASSERT(m_flushPendingLayerChangesRunLoopObserver); 141 CFRunLoopObserverInvalidate(m_flushPendingLayerChangesRunLoopObserver.get()); 142 m_flushPendingLayerChangesRunLoopObserver = 0; 143 144 LayerTreeHostCA::didPerformScheduledLayerFlush(); 145} 146 147} // namespace WebKit 148