qpaintdevice_qws.cpp

奇趣公司比较新的qt/emd版本

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#include "qpaintdevice.h"
#include "qpainter.h"
#include "qwidget.h"
#include "qbitmap.h"
#include "qapplication.h"
#include "qwsdisplay_qws.h"

QPaintDevice::QPaintDevice()
{
    painters = 0;
}


QPaintDevice::~QPaintDevice()
{
    if (paintingActive())
        qWarning("QPaintDevice: Cannot destroy paint device that is being "
                  "painted");
    extern void qt_painter_removePaintDevice(QPaintDevice *); //qpainter.cpp
    qt_painter_removePaintDevice(this);
}


int QPaintDevice::metric(PaintDeviceMetric m) const
{
    qWarning("QPaintDevice::metrics: Device has no metric information");
    if (m == PdmDpiX) {
        return 72;
    } else if (m == PdmDpiY) {
        return 72;
    } else if (m == PdmNumColors) {
        // FIXME: does this need to be a real value?
        return 256;
    } else {
        qDebug("Unrecognised metric %d!",m);
        return 0;
    }
}

/*!
    \internal
*/
QWSDisplay *QPaintDevice::qwsDisplay()
{
    return qt_fbdpy;
}