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     3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

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

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    40 ****************************************************************************/

    41 

    42 #include "dbscreen.h"

    43 #include <QApplication>

    44 

    45 //! [0]

    46 bool DBScreen::initDevice()

    47 {

    48     if (!QLinuxFbScreen::initDevice())

    49         return false;

    50 

    51     QScreenCursor::initSoftwareCursor();

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

    53     painter = new QPainter(image);

    54 

    55     return true;

    56 }

    57 //! [0]

    58 

    59 //! [1]

    60 void DBScreen::shutdownDevice()

    61 {

    62     QLinuxFbScreen::shutdownDevice();

    63     delete painter;

    64     delete image;

    65 }

    66 //! [1]

    67 

    68 //! [2]

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

    70 {

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

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

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

    74 }

    75 //! [2]

    76 

    77 //! [3]

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

    79 {

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

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

    82         QRect destRect = rects.at(i);

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

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

    85     }

    86 }

    87 //! [3]

    88 

    89 //! [4]

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

    91 {

    92     QLinuxFbScreen::exposeRegion(region, changing);

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

    94 }

    95 //! [4]

    96