bool ColorDelegate::editorEvent(QEvent* event,
QAbstractItemModel* model,
const QStyleOptionViewItem& option,
const QModelIndex& index)
{
if ( event->type() == QEvent::MouseButtonRelease && index.data().canConvert<QColor>())
{
QMouseEvent* mouse_event = static_cast<QMouseEvent*>(event);
if ( mouse_event->button() == Qt::LeftButton &&
( index.flags() & Qt::ItemIsEditable) )
{
ColorDialog *editor = new ColorDialog(const_cast<QWidget*>(option.widget));
connect(this, &QObject::destroyed, editor, &QObject::deleteLater);
editor->setMinimumSize(editor->sizeHint());
auto original_color = index.data().value<QColor>();
editor->setColor(original_color);
auto set_color = [model, index](const QColor& color){
model->setData(index, QVariant(color));
};
connect(editor, &ColorDialog::colorSelected, this, set_color);
editor->show();
}
return true;
}
return QAbstractItemDelegate::editorEvent(event, model, option, index);
}
void ColorDelegate::setEditorData(QWidget *editor, const QModelIndex &index) const
{
if (index.data().canConvert<QColor>())
{
ColorDialog *selector = qobject_cast<ColorDialog*>(editor);
selector->setColor(qvariant_cast<QColor>(index.data()));
}
else
QStyledItemDelegate::setEditorData(editor, index);
}
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
ColorListWidget c;
c.show();
ColorDialog w;
w.setColor(QColor(64,172,143,128));
w.show();
/*QPixmap p(w.size());
w.render(&p);
p.save("screenshot.png");*/
return a.exec();
}