qclipboard.cpp

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#include "qclipboard.h"

#ifndef QT_NO_CLIPBOARD

#include "qapplication.h"
#include "qapplication_p.h"
#include "qpixmap.h"
#include "qclipboard_p.h"
#include "qvariant.h"
#include "qbuffer.h"
#include "qimage.h"
#include "qtextcodec.h"

QT_BEGIN_NAMESPACE

#ifndef Q_WS_X11
// for X11 there is a separate implementation of a constructor.
QClipboard::QClipboard(QObject *parent)
    : QObject(*new QClipboardPrivate, parent)
{
    // nothing
}
#endif

#ifndef Q_WS_WIN32

QClipboard::~QClipboard()
{
}
#endif

/*****************************************************************************
  QApplication member functions related to QClipboard.
 *****************************************************************************/

// text handling is done directly in qclipboard_qws, for now

QString QClipboard::text(QString &subtype, Mode mode) const
{
    const QMimeData *const data = mimeData(mode);
    if (!data)
        return QString();

    const QStringList formats = data->formats();
    if (subtype.isEmpty()) {
        if (formats.contains(QLatin1String("text/plain")))
            subtype = QLatin1String("plain");
        else {
            for (int i = 0; i < formats.size(); ++i)
                if (formats.at(i).startsWith(QLatin1String("text/"))) {
                    subtype = formats.at(i).mid(5);
                    break;
                }
            if (subtype.isEmpty())
                return QString();
        }
    } else if (!formats.contains(QLatin1String("text/") + subtype)) {
        return QString();
    }

    const QByteArray rawData = data->data(QLatin1String("text/") + subtype);

#ifndef QT_NO_TEXTCODEC
    QTextCodec* codec = QTextCodec::codecForMib(106); // utf-8 is default
    if (subtype == QLatin1String("html"))
        codec = QTextCodec::codecForHtml(rawData, codec);
    else
        codec = QTextCodec::codecForUtfText(rawData, codec);
    return codec->toUnicode(rawData);
#else //QT_NO_TEXTCODEC
    return rawData;
#endif //QT_NO_TEXTCODEC
}

QString QClipboard::text(Mode mode) const
{
    const QMimeData *data = mimeData(mode);
    return data ? data->text() : QString();
}

void QClipboard::setText(const QString &text, Mode mode)
{
    QMimeData *data = new QMimeData;
    data->setText(text);
    setMimeData(data, mode);
}

QImage QClipboard::image(Mode mode) const
{
    const QMimeData *data = mimeData(mode);
    if (!data)
        return QImage();
    return qvariant_cast<QImage>(data->imageData());
}

void QClipboard::setImage(const QImage &image, Mode mode)
{
    QMimeData *data = new QMimeData;
    data->setImageData(image);
    setMimeData(data, mode);
}

QPixmap QClipboard::pixmap(Mode mode) const
{
    const QMimeData *data = mimeData(mode);
    return data ? qvariant_cast<QPixmap>(data->imageData()) : QPixmap();
}

void QClipboard::setPixmap(const QPixmap &pixmap, Mode mode)
{
    QMimeData *data = new QMimeData;
    data->setImageData(pixmap);
    setMimeData(data, mode);
}


#ifdef QT3_SUPPORT

QMimeSource *QClipboard::data(Mode mode) const
{
    Q_D(const QClipboard);

    if (supportsMode(mode) == false)
        return 0;

    if (d->compat_data[mode])
        return d->compat_data[mode];

    d->wrapper[mode]->data = mimeData(mode);
    return d->wrapper[mode];
}


void QClipboard::setData(QMimeSource *source, Mode mode)
{
    Q_D(QClipboard);

    if (supportsMode(mode) == false)
        return;

    d->compat_data[mode] = source;
    setMimeData(new QMimeSourceWrapper(d, mode), mode);
}
#endif // QT3_SUPPORT

bool QClipboard::supportsSelection() const
{
    return supportsMode(Selection);
}

bool QClipboard::supportsFindBuffer() const
{
    return supportsMode(FindBuffer);
}

bool QClipboard::ownsClipboard() const
{
    return ownsMode(Clipboard);
}

bool QClipboard::ownsSelection() const
{
    return ownsMode(Selection);
}

bool QClipboard::ownsFindBuffer() const
{
    return ownsMode(FindBuffer);
}

void QClipboard::emitChanged(Mode mode)
{
    switch (mode) {
        case Clipboard:
            emit dataChanged();
        break;
        case Selection:
            emit selectionChanged();
        break;
        case FindBuffer:
            emit findBufferChanged();
        break;
        default:
        break;
    }
    emit changed(mode);
}

const char* QMimeDataWrapper::format(int n) const
{
    if (formats.isEmpty()) {
        QStringList fmts = data->formats();
        for (int i = 0; i < fmts.size(); ++i)
            formats.append(fmts.at(i).toLatin1());
    }
    if (n < 0 || n >= formats.size())
        return 0;
    return formats.at(n).data();
}

QByteArray QMimeDataWrapper::encodedData(const char *format) const
{
    if (QLatin1String(format) != QLatin1String("application/x-qt-image")){
        return data->data(QLatin1String(format));
    } else{
        QVariant variant = data->imageData();
        QImage img = qvariant_cast<QImage>(variant);
        QByteArray ba;
        QBuffer buffer(&ba);
        buffer.open(QIODevice::WriteOnly);
        img.save(&buffer, "PNG");
        return ba;
    }
}

QVariant QMimeSourceWrapper::retrieveData(const QString &mimetype, QVariant::Type) const
{
    return source->encodedData(mimetype.toLatin1());
}

bool QMimeSourceWrapper::hasFormat(const QString &mimetype) const
{
    return source->provides(mimetype.toLatin1());
}

QStringList QMimeSourceWrapper::formats() const
{
    QStringList fmts;
    int i = 0;
    const char *fmt;
    while ((fmt = source->format(i))) {
        fmts.append(QLatin1String(fmt));
        ++i;
    }
    return fmts;
}

#endif // QT_NO_CLIPBOARD

QT_END_NAMESPACE