mainwidget.cpp

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/*
 * Copyright (c) 2007 Alexander Wiedenbruch <mail@wiedenbruch.de>
 *
 * This file is part of SuperKaramba.
 *
 *  SuperKaramba is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  SuperKaramba is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with SuperKaramba; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 ****************************************************************************/

#include "mainwidget.h"

#include <QTime>

#include <KWindowSystem>

MainWidget::MainWidget(QGraphicsScene *scene, QWidget *parent)
        : QGraphicsView(scene, parent),
        m_hasCompManager(false)
{
    setWindowFlags(Qt::FramelessWindowHint);
    setFrameStyle(QFrame::NoFrame);

    m_hasCompManager = KWindowSystem::compositingActive();

    setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
    setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
}

MainWidget::~MainWidget()
{}

void MainWidget::paintEvent(QPaintEvent *e)
{
    if (m_hasCompManager) {
        QPainter p(viewport());
        p.setRenderHint(QPainter::Antialiasing);
        p.setClipRect(e->rect());

        p.save();
        p.setCompositionMode(QPainter::CompositionMode_Source);
        p.fillRect(rect(), Qt::transparent);
        p.restore();
    }

    QGraphicsView::paintEvent(e);
}