svgalibpaintdevice.cpp

来自「QT 开发环境里面一个很重要的文件」· C++ 代码 · 共 50 行

/****************************************************************************
**
** Copyright (C) 1992-2006 Trolltech ASA. All rights reserved.
**
** This file is part of the example classes of the Qt Toolkit.
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** License version 2.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of
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#include "svgalibpaintdevice.h"
#include "svgalibpaintengine.h"

#include <QApplication>
#include <QDesktopWidget>

SvgalibPaintDevice::SvgalibPaintDevice(QWidget *w)
    : QCustomRasterPaintDevice(w)
{
    pengine = new SvgalibPaintEngine;
}

SvgalibPaintDevice::~SvgalibPaintDevice()
{
    delete pengine;
}

int SvgalibPaintDevice::metric(PaintDeviceMetric m) const
{
    if (m == PdmWidth)
        return QApplication::desktop()->screenGeometry().width();
    else if (m == PdmHeight)
        return QApplication::desktop()->screenGeometry().height();
    return QCustomRasterPaintDevice::metric(m);
}