Mac-4.7.4/src/gui/image/qvolatileimagedata.cpp

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#include "qvolatileimagedata_p.h"
#include <QtGui/qpaintengine.h>

QT_BEGIN_NAMESPACE

QVolatileImageData::QVolatileImageData()
    : pengine(0)
{
}

QVolatileImageData::QVolatileImageData(int w, int h, QImage::Format format)
    : pengine(0)
{
    image = QImage(w, h, format);
}

QVolatileImageData::QVolatileImageData(const QImage &sourceImage)
    : pengine(0)
{
    image = sourceImage;
}

QVolatileImageData::QVolatileImageData(void *, void *)
    : pengine(0)
{
    // Not supported.
}

QVolatileImageData::QVolatileImageData(const QVolatileImageData &other)
{
    image = other.image;
    // The detach is not mandatory here but we do it nonetheless in order to
    // keep the behavior consistent with other platforms.
    image.detach();
    pengine = 0;
}

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

void QVolatileImageData::beginDataAccess() const
{
    // nothing to do here
}

void QVolatileImageData::endDataAccess(bool readOnly) const
{
    Q_UNUSED(readOnly);
    // nothing to do here
}

bool QVolatileImageData::ensureFormat(QImage::Format format)
{
    if (image.format() != format) {
        image = image.convertToFormat(format);
    }
    return true;
}

void *QVolatileImageData::duplicateNativeImage() const
{
    return 0;
}

void QVolatileImageData::ensureImage()
{
    // nothing to do here
}

QT_END_NAMESPACE