| /* |
| * Copyright (C) 2018 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. AND ITS CONTRIBUTORS ``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 ITS 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. |
| */ |
| |
| #include "config.h" |
| #include "DrawingArea.h" |
| |
| #include "WebProcess.h" |
| #include "WebProcessProxy.h" |
| #include "WebProcessProxyMessages.h" |
| |
| #include <WebCore/DisplayRefreshMonitor.h> |
| #include <WebCore/RunLoopObserver.h> |
| |
| namespace WebKit { |
| using namespace WebCore; |
| |
| #if USE(REQUEST_ANIMATION_FRAME_DISPLAY_MONITOR) && ENABLE(WEBPROCESS_WINDOWSERVER_BLOCKING) |
| |
| class DisplayRefreshMonitorMac : public DisplayRefreshMonitor { |
| public: |
| static Ref<DisplayRefreshMonitorMac> create(PlatformDisplayID displayID) |
| { |
| return adoptRef(*new DisplayRefreshMonitorMac(displayID)); |
| } |
| |
| virtual ~DisplayRefreshMonitorMac(); |
| |
| void displayLinkFired() override; |
| bool requestRefreshCallback() override; |
| |
| private: |
| explicit DisplayRefreshMonitorMac(PlatformDisplayID); |
| |
| bool hasRequestedRefreshCallback() const override { return m_hasSentMessage; } |
| |
| bool m_hasSentMessage { false }; |
| unsigned m_observerID; |
| static unsigned m_counterID; |
| std::unique_ptr<RunLoopObserver> m_runLoopObserver; |
| bool m_firstCallbackInCurrentRunloop { false }; |
| }; |
| |
| unsigned DisplayRefreshMonitorMac::m_counterID = 0; |
| |
| DisplayRefreshMonitorMac::DisplayRefreshMonitorMac(PlatformDisplayID displayID) |
| : DisplayRefreshMonitor(displayID) |
| , m_observerID(++m_counterID) |
| { |
| } |
| |
| DisplayRefreshMonitorMac::~DisplayRefreshMonitorMac() |
| { |
| WebProcess::singleton().parentProcessConnection()->send(Messages::WebProcessProxy::StopDisplayLink(m_observerID, displayID()), 0); |
| } |
| |
| bool DisplayRefreshMonitorMac::requestRefreshCallback() |
| { |
| if (!isActive()) |
| return false; |
| |
| if (!m_hasSentMessage) { |
| WebProcess::singleton().parentProcessConnection()->send(Messages::WebProcessProxy::StartDisplayLink(m_observerID, displayID()), 0); |
| m_hasSentMessage = true; |
| m_runLoopObserver = std::make_unique<RunLoopObserver>(kCFRunLoopEntry, [this]() { |
| this->m_firstCallbackInCurrentRunloop = true; |
| }); |
| m_runLoopObserver->schedule(CFRunLoopGetCurrent()); |
| } |
| |
| setIsScheduled(true); |
| |
| return true; |
| } |
| |
| void DisplayRefreshMonitorMac::displayLinkFired() |
| { |
| ASSERT(isMainThread()); |
| if (!m_firstCallbackInCurrentRunloop) |
| return; |
| m_firstCallbackInCurrentRunloop = false; |
| |
| // Since we are on the main thread, we can just call handleDisplayRefreshedNotificationOnMainThread here. |
| handleDisplayRefreshedNotificationOnMainThread(this); |
| } |
| |
| RefPtr<WebCore::DisplayRefreshMonitor> DrawingArea::createDisplayRefreshMonitor(PlatformDisplayID displayID) |
| { |
| return DisplayRefreshMonitorMac::create(displayID); |
| } |
| #endif |
| |
| } |