1 files changed, 100 insertions, 0 deletions
diff --git a/src/client/util/platform/blankscreen.cpp b/src/client/util/platform/blankscreen.cpp
new file mode 100644
index 0000000..ee644ca
--- /dev/null
+++ b/src/client/util/platform/blankscreen.cpp
@@ -0,0 +1,100 @@
+
+#include "blankscreen.h"
+
+#include <QApplication>
+#include <QProcess>
+#include <QDesktopWidget>
+#include <QTimer>
+
+#include <X11/Xlib.h>
+#include <X11/cursorfont.h>
+
+#include <cassert>
+#include <cstring>
+
+struct BlankScreen_Sysdep {
+	Display *dpy;
+};
+
+BlankScreen::BlankScreen() : QDialog(NULL)
+{
+	_sysdep = new BlankScreen_Sysdep;
+	_sysdep->dpy = XOpenDisplay(NULL);
+	if (_sysdep->dpy == NULL)
+		return;
+
+	setWindowFlags(Qt::WindowStaysOnTopHint | Qt::X11BypassWindowManagerHint | Qt::FramelessWindowHint);
+	setStyleSheet("background-color:#000");
+
+	_locked = false;
+	QTimer *upper = new QTimer(this);
+	connect(upper, SIGNAL(timeout()), this, SLOT(timer_moveToTop()));
+	upper->start(1111);
+}
+
+BlankScreen::~BlankScreen()
+{
+	unlock();
+	if (_sysdep->dpy != NULL) {
+		XCloseDisplay(_sysdep->dpy);
+	}
+	delete _sysdep;
+}
+
+bool BlankScreen::lock(const QString& message)
+{
+	if (_locked)
+		return true;
+	if (_sysdep->dpy == NULL)
+		return false;
+
+	_message = message;
+
+	this->setGeometry(QApplication::desktop()->geometry());
+	this->showFullScreen();
+	this->activateWindow();
+	this->raise();
+
+	// grabbing of keyboard and mouse
+	XGrabKeyboard(_sysdep->dpy, DefaultRootWindow(_sysdep->dpy) , false, GrabModeAsync, GrabModeAsync, CurrentTime);
+	XGrabPointer(_sysdep->dpy, DefaultRootWindow(_sysdep->dpy) , false, 0, GrabModeAsync, GrabModeAsync, None, 0, CurrentTime);
+
+
+	QProcess ungrabP;
+	ungrabP.start("/bin/bash", QStringList() << "/opt/openslx/pvs2/kb-lock.sh");
+	ungrabP.waitForFinished();
+
+	_locked = true;
+	return true;
+}
+
+bool BlankScreen::unlock()
+{
+	this->hide();
+	if (!_locked)
+		return true;
+	if (_sysdep->dpy == NULL)
+		return false;
+
+	// ungrabbing of keyboard and mouse
+	XUngrabPointer(_sysdep->dpy, CurrentTime);
+	XUngrabKeyboard(_sysdep->dpy, CurrentTime);
+
+	XFlush(_sysdep->dpy);
+
+	/* start the kb-unlock.sh script */
+	QProcess regrabP;
+	regrabP.start("/bin/bash", QStringList() << "/opt/openslx/pvs2/kb-unlock.sh");
+	regrabP.waitForFinished();
+
+	_locked = false;
+	return true;
+}
+
+void BlankScreen::timer_moveToTop()
+{
+	if (this->isHidden())
+		return;
+	activateWindow();
+	raise();
+}