| /* |
| * Copyright (C) 2018 Igalia S.L. |
| * |
| * 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. |
| */ |
| |
| #include "config.h" |
| #include "DisplayRefreshMonitorGtk.h" |
| |
| #if USE(REQUEST_ANIMATION_FRAME_DISPLAY_MONITOR) |
| |
| #include <gtk/gtk.h> |
| #include <wtf/RunLoop.h> |
| |
| namespace WebCore { |
| |
| DisplayRefreshMonitorGtk::DisplayRefreshMonitorGtk(PlatformDisplayID displayID) |
| : DisplayRefreshMonitor(displayID) |
| { |
| } |
| |
| DisplayRefreshMonitorGtk::~DisplayRefreshMonitorGtk() |
| { |
| if (m_window) |
| gtk_widget_destroy(m_window); |
| } |
| |
| static void onFrameClockUpdate(GdkFrameClock*, DisplayRefreshMonitorGtk* monitor) |
| { |
| monitor->displayLinkFired(); |
| } |
| |
| bool DisplayRefreshMonitorGtk::requestRefreshCallback() |
| { |
| if (!isActive()) |
| return false; |
| |
| if (!m_window) { |
| // GdkFrameClockIdle is private in GDK, so we need to create a toplevel to get its frame clock. |
| m_window = gtk_offscreen_window_new(); |
| gtk_widget_realize(m_window); |
| |
| auto* frameClock = gtk_widget_get_frame_clock(m_window); |
| if (!frameClock) |
| return false; |
| |
| g_signal_connect(frameClock, "update", G_CALLBACK(onFrameClockUpdate), this); |
| gdk_frame_clock_begin_updating(frameClock); |
| |
| setIsActive(true); |
| } |
| |
| LockHolder lock(mutex()); |
| setIsScheduled(true); |
| return true; |
| } |
| |
| void DisplayRefreshMonitorGtk::displayLinkFired() |
| { |
| { |
| LockHolder lock(mutex()); |
| if (!isPreviousFrameDone()) |
| return; |
| |
| setIsPreviousFrameDone(false); |
| } |
| ASSERT(isMainThread()); |
| handleDisplayRefreshedNotificationOnMainThread(this); |
| } |
| |
| } // namespace WebCore |
| |
| #endif // USE(REQUEST_ANIMATION_FRAME_DISPLAY_MONITOR) |