svgalibscreen.h Example File

qws/svgalib/svgalibscreen.h
 /****************************************************************************
 **
 ** Copyright (C) 2012 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."
 ** $QT_END_LICENSE$
 **
 ****************************************************************************/

 #ifndef SVGALIBSCREEN_H
 #define SVGALIBSCREEN_H

 #include <QScreen>

 #include <vga.h>
 #include <vgagl.h>

 class SvgalibScreen : public QScreen
 {
 public:
     SvgalibScreen(int displayId) : QScreen(displayId) {}
     ~SvgalibScreen() {}

     bool connect(const QString &displaySpec);
     bool initDevice();
     void shutdownDevice();
     void disconnect();

     void setMode(int, int, int) {}
     void blank(bool) {}

     void blit(const QImage &img, const QPoint &topLeft, const QRegion &region);
     void solidFill(const QColor &color, const QRegion &region);

     QWSWindowSurface* createSurface(QWidget *widget) const;
     QWSWindowSurface* createSurface(const QString &key) const;

 private:
     void initColorMap();
     void blit16To8(const QImage &image,
                    const QPoint &topLeft, const QRegion &region);
     void blit32To8(const QImage &image,
                    const QPoint &topLeft, const QRegion &region);

     GraphicsContext *context;
 };

 #endif // SVGALIBSCREEN_H