C++ QMimeData::text方法代码示例

void tst_QMimeData::setUrls() const
{
    QMimeData mimeData;
    QList<QUrl> shortUrlList;
    QList<QUrl> longUrlList;

    // set up
    shortUrlList += QUrl("http://qt-project.org");
    longUrlList = shortUrlList;
    longUrlList += QUrl("http://www.google.com");

    // verify initial state
    QCOMPARE(mimeData.hasUrls(), false);

    // set a few, verify
    mimeData.setUrls(shortUrlList);
    QCOMPARE(mimeData.urls(), shortUrlList);
    QCOMPARE(mimeData.text(), QString("http://qt-project.org"));

    // change them, verify
    mimeData.setUrls(longUrlList);
    QCOMPARE(mimeData.urls(), longUrlList);
    QCOMPARE(mimeData.text(), QString("http://qt-project.org\nhttp://www.google.com\n"));

    // clear, verify
    mimeData.clear();
    QCOMPARE(mimeData.hasUrls(), false);
    QCOMPARE(mimeData.hasText(), false);
}

void tst_QMimeData::setText() const
{
    QMimeData mimeData;

    // verify initial state
    QCOMPARE(mimeData.text(), QLatin1String(""));
    QVERIFY(mimeData.hasText() == false);

    // set, verify
    mimeData.setText("pirates");
    QVERIFY(mimeData.hasText());
    QCOMPARE(mimeData.text(), QLatin1String("pirates"));
    QCOMPARE(mimeData.text().toLatin1(), mimeData.data("text/plain"));

    // reset, verify
    mimeData.setText("ninjas");
    QVERIFY(mimeData.hasText());
    QCOMPARE(mimeData.text(), QLatin1String("ninjas"));
    QCOMPARE(mimeData.text().toLatin1(), mimeData.data("text/plain"));

    // clear, verify
    mimeData.clear();
    QCOMPARE(mimeData.text(), QLatin1String(""));
    QVERIFY(mimeData.hasText() == false);
}

QDebug operator<<(QDebug d, const QMimeData &m)
{
    QDebug nospace = d.nospace();
    const QStringList formats = m.formats();
    nospace << "QMimeData: " << formats.join(QStringLiteral(", ")) << '\n'
            << "  Text=" << m.hasText() << " HTML=" << m.hasHtml()
            << " Color=" << m.hasColor() << " Image=" << m.hasImage()
            << " URLs=" << m.hasUrls() << '\n';
    if (m.hasText())
        nospace << "  Text: '" << m.text() << "'\n";
    if (m.hasHtml())
        nospace << "  HTML: '" << m.html() << "'\n";
    if (m.hasColor())
        nospace << "  Color: " << qvariant_cast<QColor>(m.colorData()) << '\n';
    if (m.hasImage())
        nospace << "  Image: " << qvariant_cast<QImage>(m.imageData()).size() << '\n';
    if (m.hasUrls())
        nospace << "  URLs: " << m.urls() << '\n';
    return d;
}

QString PsiTextView::getTextHelper(bool html) const
{
	PsiTextView *ptv = (PsiTextView *)this;
	QTextCursor cursor = ptv->textCursor();
	int position = ptv->verticalScrollBar()->value();

	bool unselectAll = false;
	if (!textCursor().hasSelection()) {
#if QT_VERSION == 0x040701
		// workaround for crash when deleting last character with backspace (qt-4.7.1)
		// http://bugreports.qt.nokia.com/browse/QTBUG-15857
		QTextCursor tempCursor = QTextCursor(ptv->document());
		tempCursor.movePosition(QTextCursor::Start);
		ptv->setTextCursor(tempCursor);
#endif
		ptv->selectAll();
		unselectAll = true;
	}

	QMimeData *mime = createMimeDataFromSelection();
	QString result;
	if (html)
		result = mime->html();
	else
		result = mime->text();
	delete mime;

	// we need to restore original position if selectAll()
	// was called, because setTextCursor() (which is necessary
	// to clear selection) will move vertical scroll bar
	if (unselectAll) {
		cursor.clearSelection();
		ptv->setTextCursor(cursor);
		ptv->verticalScrollBar()->setValue(position);
	}

	return result;
}

void PlayListW::mousePressEvent(QMouseEvent *event) {
	QListWidget::mousePressEvent(event);

	if ( event->button() == Qt::LeftButton ) {
		QListWidgetItem *item = currentItem();

		QDrag *drag = new QDrag(this);
		QMimeData *mimeData = new QMimeData();

		//Playlist Id, convoluted? indeed
		QByteArray playlistba;
		playlistba.append(item->text());

		mimeData->setText(item->text());
		mimeData->setData("application/playlist-id", playlistba);
		drag->setMimeData(mimeData);

		qDebug() << "Start Playlist Drag: " << mimeData->text() 
			 << " " << mimeData->data("application/playlist-id").toInt();

		Qt::DropAction dropAction = drag->start(Qt::CopyAction); // [WTF]
	}
}

	void FixedWidthTableView::startDrag(Qt::DropActions supportedActions)
	{
		QModelIndex item = currentIndex();
		QModelIndexList list;
		list.append(item);

		QMimeData* mimeData = model()->mimeData(list);

		QDrag *drag = new QDrag(this);
		drag->setMimeData(mimeData);
		QPixmap pixmap = getDragPixmap(mimeData->text());
		drag->setPixmap(pixmap);
		QPoint hotpoint(pixmap.width()+10, pixmap.height()/2);
		drag->setHotSpot(hotpoint);

		if (drag->exec(Qt::CopyAction|Qt::MoveAction, Qt::CopyAction) == Qt::MoveAction)
		{
			// item moved
		}
		else
		{
			// item copied
		}
	}