From 1a5709501f94014d41987b956338bb6424b9f90c Mon Sep 17 00:00:00 2001
From: sr
Date: Mon, 4 Feb 2013 19:50:31 +0100
Subject: Initial commit

---
 src/client/util/platform/blankscreen.h         | 25 +++++++++
 src/client/util/platform/blankscreen_Win32.cpp | 41 ++++++++++++++
 src/client/util/platform/blankscreen_X11.cpp   | 75 ++++++++++++++++++++++++++
 3 files changed, 141 insertions(+)
 create mode 100755 src/client/util/platform/blankscreen.h
 create mode 100755 src/client/util/platform/blankscreen_Win32.cpp
 create mode 100755 src/client/util/platform/blankscreen_X11.cpp

(limited to 'src/client/util/platform')

diff --git a/src/client/util/platform/blankscreen.h b/src/client/util/platform/blankscreen.h
new file mode 100755
index 0000000..8ed4c04
--- /dev/null
+++ b/src/client/util/platform/blankscreen.h
@@ -0,0 +1,25 @@
+#ifndef _BLANKSCREEN_H_
+#define _BLANKSCREEN_H_
+
+#include <QString>
+#include <QDialog>
+
+class BlankScreen_Sysdep;
+
+class BlankScreen : public QDialog
+{
+	Q_OBJECT
+public:
+    BlankScreen();
+    virtual ~BlankScreen();
+    void draw(bool force = false);
+    bool lock(const QString& message);
+    bool unlock();
+
+private:
+    bool _locked;
+    QString _message;
+    BlankScreen_Sysdep* _sysdep;
+};
+
+#endif
diff --git a/src/client/util/platform/blankscreen_Win32.cpp b/src/client/util/platform/blankscreen_Win32.cpp
new file mode 100755
index 0000000..2bba1cf
--- /dev/null
+++ b/src/client/util/platform/blankscreen_Win32.cpp
@@ -0,0 +1,41 @@
+
+#include "blankscreen.h"
+#include <qwidget.h>
+
+struct BlankScreen_Sysdep {
+
+    bool locked;
+	QWidget* blankwin;
+
+    QString lockMsg;
+    int blackColor, whiteColor;
+    int offX, offY;
+};
+
+BlankScreen::BlankScreen()
+{
+	_sysdep = new BlankScreen_Sysdep;
+    _sysdep->blankwin = new QWidget(0, Qt::X11BypassWindowManagerHint | Qt::FramelessWindowHint | Qt::WindowStaysOnTopHint);
+    _sysdep->blankwin->setWindowState(Qt::WindowFullScreen);
+    _sysdep->blankwin->show();
+}
+
+BlankScreen::~BlankScreen()
+{
+    delete _sysdep;
+}
+
+void BlankScreen::draw(bool force)
+{
+    
+}
+
+bool BlankScreen::lock(const QString& message)
+{
+   return true;
+}
+
+bool BlankScreen::unlock()
+{
+    return true;
+}
diff --git a/src/client/util/platform/blankscreen_X11.cpp b/src/client/util/platform/blankscreen_X11.cpp
new file mode 100755
index 0000000..69b6d8c
--- /dev/null
+++ b/src/client/util/platform/blankscreen_X11.cpp
@@ -0,0 +1,75 @@
+#include "blankscreen.h"
+
+#include <QApplication>
+#include <QDesktopWidget>
+
+#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;
+	assert(_sysdep->dpy);
+
+	setWindowFlags(Qt::WindowStaysOnTopHint | Qt::X11BypassWindowManagerHint | Qt::FramelessWindowHint);
+	setStyleSheet("background-color:#000");
+
+	_locked = false;
+}
+
+BlankScreen::~BlankScreen()
+{
+	unlock();
+	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);
+
+	_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);
+
+	_locked = false;
+	return true;
+}
-- 
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