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Diffstat (limited to 'examples/qws/dbscreen/dbscreen.cpp')
-rw-r--r-- | examples/qws/dbscreen/dbscreen.cpp | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/examples/qws/dbscreen/dbscreen.cpp b/examples/qws/dbscreen/dbscreen.cpp new file mode 100644 index 0000000000..61953d98c2 --- /dev/null +++ b/examples/qws/dbscreen/dbscreen.cpp @@ -0,0 +1,95 @@ +/**************************************************************************** +** +** Copyright (C) 2011 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. +** +** $QT_BEGIN_LICENSE:BSD$ +** You may use this file under the terms of the BSD license as follows: +** +** "Redistribution and use in source and binary forms, with or without +** modification, are permitted provided that the following conditions are +** met: +** * Redistributions of source code must retain the above copyright +** notice, this list of conditions and the following disclaimer. +** * Redistributions in binary form must reproduce the above copyright +** notice, this list of conditions and the following disclaimer in +** the documentation and/or other materials provided with the +** distribution. +** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor +** the names of its contributors may be used to endorse or promote +** products derived from this software without specific prior written +** permission. +** +** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#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 ®ion) +{ + 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 ®ion) +{ + 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] + |