draglabel.cpp Example File

draganddrop/fridgemagnets/draglabel.cpp
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#include "draglabel.h" #include <QtWidgets> DragLabel::DragLabel(const QString &text, QWidget *parent) : QLabel(parent) { QFontMetrics metric(font()); QSize size = metric.size(Qt::TextSingleLine, text); QImage image(size.width() + 12, size.height() + 12, QImage::Format_ARGB32_Premultiplied); image.fill(qRgba(0, 0, 0, 0)); QFont font; font.setStyleStrategy(QFont::ForceOutline); QLinearGradient gradient(0, 0, 0, image.height()-1); gradient.setColorAt(0.0, Qt::white); gradient.setColorAt(0.2, QColor(200, 200, 255)); gradient.setColorAt(0.8, QColor(200, 200, 255)); gradient.setColorAt(1.0, QColor(127, 127, 200)); QPainter painter; painter.begin(&image); painter.setRenderHint(QPainter::Antialiasing); painter.setBrush(gradient); painter.drawRoundedRect(QRectF(0.5, 0.5, image.width()-1, image.height()-1), 25, 25, Qt::RelativeSize); painter.setFont(font); painter.setBrush(Qt::black); painter.drawText(QRect(QPoint(6, 6), size), Qt::AlignCenter, text); painter.end(); setPixmap(QPixmap::fromImage(image)); m_labelText = text; } QString DragLabel::labelText() const { return m_labelText; }