/****************************************************************************+
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**+
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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).+
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** All rights reserved.+
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** Contact: Nokia Corporation (qt-info@nokia.com)+
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**+
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** This file is part of the examples of the Qt Toolkit.+
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**+
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** $QT_BEGIN_LICENSE:LGPL$+
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** No Commercial Usage+
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** This file contains pre-release code and may not be distributed.+
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** You may use this file in accordance with the terms and conditions+
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** contained in the Technology Preview License Agreement accompanying+
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** this package.+
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**+
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** GNU Lesser General Public License Usage+
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** Alternatively, this file may be used under the terms of the GNU Lesser+
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** General Public License version 2.1 as published by the Free Software+
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** Foundation and appearing in the file LICENSE.LGPL included in the+
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** packaging of this file.  Please review the following information to+
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** ensure the GNU Lesser General Public License version 2.1 requirements+
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.+
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**+
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** In addition, as a special exception, Nokia gives you certain additional+
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** rights.  These rights are described in the Nokia Qt LGPL Exception+
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.+
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**+
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** If you have questions regarding the use of this file, please contact+
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** Nokia at qt-info@nokia.com.+
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**+
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**+
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**+
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**+
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** $QT_END_LICENSE$+
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**+
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****************************************************************************/+
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+
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#include "dbscreen.h"+
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#include <QApplication>+
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+
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//! [0]+
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bool DBScreen::initDevice()+
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{+
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    if (!QLinuxFbScreen::initDevice())+
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        return false;+
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+
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    QScreenCursor::initSoftwareCursor();+
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    image = new QImage(deviceWidth(), deviceHeight(), pixelFormat());+
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    painter = new QPainter(image);+
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+
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    return true;+
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}+
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//! [0]+
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+
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//! [1]+
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void DBScreen::shutdownDevice()+
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{+
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    QLinuxFbScreen::shutdownDevice();+
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    delete painter;+
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    delete image;+
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}+
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//! [1]+
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+
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//! [2]+
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void DBScreen::solidFill(const QColor &color, const QRegion &region)+
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{+
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    QVector<QRect> rects = region.rects();+
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    for (int i = 0; i  < rects.size(); i++)+
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        painter->fillRect(rects.at(i), color);+
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}+
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//! [2]+
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+
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//! [3]+
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void DBScreen::blit(const QImage &image, const QPoint &topLeft, const QRegion &region)+
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{+
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    QVector<QRect> rects = region.rects();+
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    for (int i = 0; i < rects.size(); i++) {+
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        QRect destRect = rects.at(i);+
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        QRect srcRect(destRect.x()-topLeft.x(), destRect.y()-topLeft.y(), destRect.width(), destRect.height());+
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        painter->drawImage(destRect.topLeft(), image, srcRect);+
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    }+
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}+
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//! [3]+
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+
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//! [4]+
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void DBScreen::exposeRegion(QRegion region, int changing)+
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{+
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    QLinuxFbScreen::exposeRegion(region, changing);+
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    QLinuxFbScreen::blit(*image, QPoint(0, 0), region);+
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}+
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//! [4]+
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+
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