svgalibscreen.h Example File

qws/svgalib/svgalibscreen.h
/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** 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 The Qt Company Ltd 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