/****************************************************************************

**

** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).

** All rights reserved.

** Contact: Nokia Corporation (qt-info@nokia.com)

**

** This file is part of the examples of the Qt Toolkit.

**

**

**

** $QT_END_LICENSE$

**

****************************************************************************/

#include "dbscreen.h"

#include <QApplication>

//! [0]

bool DBScreen::initDevice()

{

    if (!QLinuxFbScreen::initDevice())

        return false;

    QScreenCursor::initSoftwareCursor();

    image = new QImage(deviceWidth(), deviceHeight(), pixelFormat());

    painter = new QPainter(image);

    return true;

}

//! [0]

//! [1]

void DBScreen::shutdownDevice()

{

    QLinuxFbScreen::shutdownDevice();

    delete painter;

    delete image;

}

//! [1]

//! [2]

void DBScreen::solidFill(const QColor &color, const QRegion &region)

{

    QVector<QRect> rects = region.rects();

    for (int i = 0; i  < rects.size(); i++)

        painter->fillRect(rects.at(i), color);

}

//! [2]

//! [3]

void DBScreen::blit(const QImage &image, const QPoint &topLeft, const QRegion &region)

{

    QVector<QRect> rects = region.rects();

    for (int i = 0; i < rects.size(); i++) {

        QRect destRect = rects.at(i);

        QRect srcRect(destRect.x()-topLeft.x(), destRect.y()-topLeft.y(), destRect.width(), destRect.height());

        painter->drawImage(destRect.topLeft(), image, srcRect);

    }

}

//! [3]

//! [4]

void DBScreen::exposeRegion(QRegion region, int changing)

{

    QLinuxFbScreen::exposeRegion(region, changing);

    QLinuxFbScreen::blit(*image, QPoint(0, 0), region);

}

//! [4]