DisplayRefreshMonitorGtk.cpp [plain text]
#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);
}
#ifndef GTK_API_VERSION_2
static void onFrameClockUpdate(GdkFrameClock*, DisplayRefreshMonitorGtk* monitor)
{
monitor->displayLinkFired();
}
#endif
bool DisplayRefreshMonitorGtk::requestRefreshCallback()
{
if (!isActive())
return false;
#ifndef GTK_API_VERSION_2
if (!m_window) {
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;
#else
return false;
#endif
}
void DisplayRefreshMonitorGtk::displayLinkFired()
{
{
LockHolder lock(mutex());
if (!isPreviousFrameDone())
return;
setIsPreviousFrameDone(false);
}
ASSERT(isMainThread());
handleDisplayRefreshedNotificationOnMainThread(this);
}
}
#endif // USE(REQUEST_ANIMATION_FRAME_DISPLAY_MONITOR)