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/***************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (directui@nokia.com)
**
** This file is part of mcompositor.
**
** If you have questions regarding the use of this file, please contact
** Nokia at directui@nokia.com.
**
** This library is free software; you can redistribute it and/or
** modify it under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation
** and appearing in the file LICENSE.LGPL included in the packaging
** of this file.
**
****************************************************************************/
#include <QX11Info>
#include <QKeySequence>
#include <QKeyEvent>
#include <QEvent>
#include <QTimer>
#include <QApplication>
#include <QDesktopWidget>
#include "mcompositewindow.h"
#include "mcompositescene.h"
#include <X11/extensions/Xfixes.h>
#ifdef HAVE_SHAPECONST
#include <X11/extensions/shapeconst.h>
#else
#include <X11/extensions/shape.h>
#endif
#include <X11/extensions/Xcomposite.h>
static int error_handler(Display * , XErrorEvent *error)
{
if (error->resourceid == QX11Info::appRootWindow() && error->error_code == BadAccess) {
qCritical("Another window manager is running.");
::exit(0);
}
if (error->error_code == BadMatch)
qDebug() << "Bad match error " << error->resourceid;
return 0;
}
MCompositeScene::MCompositeScene(QObject *p)
: QGraphicsScene(p)
{
setBackgroundBrush(Qt::NoBrush);
setForegroundBrush(Qt::NoBrush);
setSceneRect(QRect(0, 0,
QApplication::desktop()->width(),
QApplication::desktop()->height()));
installEventFilter(this);
}
void MCompositeScene::prepareRoot()
{
Display *dpy = QX11Info::display();
Window root = QX11Info::appRootWindow();
XSetWindowAttributes sattr;
sattr.event_mask = SubstructureRedirectMask | SubstructureNotifyMask | StructureNotifyMask | PropertyChangeMask;
//XCompositeRedirectSubwindows (dpy, root, CompositeRedirectAutomatic);
XChangeWindowAttributes(dpy, root, CWEventMask, &sattr);
XSelectInput(dpy, root, SubstructureNotifyMask | SubstructureRedirectMask | StructureNotifyMask | PropertyChangeMask);
XSetErrorHandler(error_handler);
}
void MCompositeScene::setupOverlay(Window window, const QRect &geom,
bool restoreInput)
{
Display *dpy = QX11Info::display();
XRectangle rect;
rect.x = geom.x();
rect.y = geom.y();
rect.width = geom.width();
rect.height = geom.height();
XserverRegion region = XFixesCreateRegion(dpy, &rect, 1);
XFixesSetWindowShapeRegion(dpy, window, ShapeBounding, 0, 0, 0);
if (!restoreInput)
XFixesSetWindowShapeRegion(dpy, window, ShapeInput, 0, 0, region);
else
XFixesSetWindowShapeRegion(dpy, window, ShapeInput, 0, 0, 0);
XFixesDestroyRegion(dpy, region);
}
void MCompositeScene::drawItems(QPainter *painter, int numItems, QGraphicsItem *items[], const QStyleOptionGraphicsItem options[], QWidget *widget)
{
for (int i = 0; i < numItems; ++i) {
MCompositeWindow *window = (MCompositeWindow *) items[i];
if (window->windowVisible() && !window->isIconified()) {
painter->save();
painter->setMatrix(items[i]->sceneMatrix(), true);
items[i]->paint(painter, &options[i], widget);
painter->restore();
}
}
}
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