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    41 

    42 #include <QtGui>

    43 

    44 #include "draglabel.h"

    45 

    46 //! [0]

    47 DragLabel::DragLabel(const QString &text, QWidget *parent)

    48     : QLabel(parent)

    49 {

    50     QFontMetrics metric(font());

    51     QSize size = metric.size(Qt::TextSingleLine, text);

    52 

    53     QImage image(size.width() + 12, size.height() + 12,

    54                  QImage::Format_ARGB32_Premultiplied);

    55     image.fill(qRgba(0, 0, 0, 0));

    56 

    57     QFont font;

    58     font.setStyleStrategy(QFont::ForceOutline);

    59 //! [0]

    60 

    61 //! [1]

    62     QLinearGradient gradient(0, 0, 0, image.height()-1);

    63     gradient.setColorAt(0.0, Qt::white);

    64     gradient.setColorAt(0.2, QColor(200, 200, 255));

    65     gradient.setColorAt(0.8, QColor(200, 200, 255));

    66     gradient.setColorAt(1.0, QColor(127, 127, 200));

    67 

    68     QPainter painter;

    69     painter.begin(&image);

    70     painter.setRenderHint(QPainter::Antialiasing);

    71     painter.setBrush(gradient);

    72     painter.drawRoundedRect(QRectF(0.5, 0.5, image.width()-1, image.height()-1),

    73                             25, 25, Qt::RelativeSize);

    74 

    75     painter.setFont(font);

    76     painter.setBrush(Qt::black);

    77     painter.drawText(QRect(QPoint(6, 6), size), Qt::AlignCenter, text);

    78     painter.end();

    79 //! [1]

    80 

    81 //! [2]

    82     setPixmap(QPixmap::fromImage(image));

    83     m_labelText = text;

    84 }

    85 //! [2]

    86 

    87 QString DragLabel::labelText() const

    88 {

    89     return m_labelText;

    90 }