1/*
2 * Copyright (C) 2018 Igalia S.L.
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#include "config.h"
27#include "DisplayRefreshMonitorGtk.h"
28
29#if USE(REQUEST_ANIMATION_FRAME_DISPLAY_MONITOR)
30
31#include <gtk/gtk.h>
32#include <wtf/RunLoop.h>
33
34namespace WebCore {
35
36DisplayRefreshMonitorGtk::DisplayRefreshMonitorGtk(PlatformDisplayID displayID)
37 : DisplayRefreshMonitor(displayID)
38{
39}
40
41DisplayRefreshMonitorGtk::~DisplayRefreshMonitorGtk()
42{
43 if (m_window)
44 gtk_widget_destroy(m_window);
45}
46
47#ifndef GTK_API_VERSION_2
48static void onFrameClockUpdate(GdkFrameClock*, DisplayRefreshMonitorGtk* monitor)
49{
50 monitor->displayLinkFired();
51}
52#endif
53
54bool DisplayRefreshMonitorGtk::requestRefreshCallback()
55{
56 if (!isActive())
57 return false;
58
59#ifndef GTK_API_VERSION_2
60 if (!m_window) {
61 // GdkFrameClockIdle is private in GDK, so we need to create a toplevel to get its frame clock.
62 m_window = gtk_offscreen_window_new();
63 gtk_widget_realize(m_window);
64
65 auto* frameClock = gtk_widget_get_frame_clock(m_window);
66 if (!frameClock)
67 return false;
68
69 g_signal_connect(frameClock, "update", G_CALLBACK(onFrameClockUpdate), this);
70 gdk_frame_clock_begin_updating(frameClock);
71
72 setIsActive(true);
73 }
74
75 LockHolder lock(mutex());
76 setIsScheduled(true);
77 return true;
78#else
79 return false;
80#endif
81}
82
83void DisplayRefreshMonitorGtk::displayLinkFired()
84{
85 {
86 LockHolder lock(mutex());
87 if (!isPreviousFrameDone())
88 return;
89
90 setIsPreviousFrameDone(false);
91 }
92 ASSERT(isMainThread());
93 handleDisplayRefreshedNotificationOnMainThread(this);
94}
95
96} // namespace WebCore
97
98#endif // USE(REQUEST_ANIMATION_FRAME_DISPLAY_MONITOR)
99