stardelegate.cpp Example File

itemviews/stardelegate/stardelegate.cpp
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#include <QtWidgets> #include "stardelegate.h" #include "stareditor.h" #include "starrating.h" void StarDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const { if (index.data().canConvert<StarRating>()) { StarRating starRating = qvariant_cast<StarRating>(index.data()); if (option.state & QStyle::State_Selected) painter->fillRect(option.rect, option.palette.highlight()); starRating.paint(painter, option.rect, option.palette, StarRating::ReadOnly); } else { QStyledItemDelegate::paint(painter, option, index); } } QSize StarDelegate::sizeHint(const QStyleOptionViewItem &option, const QModelIndex &index) const { if (index.data().canConvert<StarRating>()) { StarRating starRating = qvariant_cast<StarRating>(index.data()); return starRating.sizeHint(); } else { return QStyledItemDelegate::sizeHint(option, index); } } QWidget *StarDelegate::createEditor(QWidget *parent, const QStyleOptionViewItem &option, const QModelIndex &index) const { if (index.data().canConvert<StarRating>()) { StarEditor *editor = new StarEditor(parent); connect(editor, &StarEditor::editingFinished, this, &StarDelegate::commitAndCloseEditor); return editor; } else { return QStyledItemDelegate::createEditor(parent, option, index); } } void StarDelegate::setEditorData(QWidget *editor, const QModelIndex &index) const { if (index.data().canConvert<StarRating>()) { StarRating starRating = qvariant_cast<StarRating>(index.data()); StarEditor *starEditor = qobject_cast<StarEditor *>(editor); starEditor->setStarRating(starRating); } else { QStyledItemDelegate::setEditorData(editor, index); } } void StarDelegate::setModelData(QWidget *editor, QAbstractItemModel *model, const QModelIndex &index) const { if (index.data().canConvert<StarRating>()) { StarEditor *starEditor = qobject_cast<StarEditor *>(editor); model->setData(index, QVariant::fromValue(starEditor->starRating())); } else { QStyledItemDelegate::setModelData(editor, model, index); } } void StarDelegate::commitAndCloseEditor() { StarEditor *editor = qobject_cast<StarEditor *>(sender()); emit commitData(editor); emit closeEditor(editor); }