HotupdateTool/listview_delgate.cpp

#include "Listview_delgate.h"

#include <QComboBox>
#include <QStyledItemDelegate>
#include <QPainter>
Listview_delgate::Listview_delgate(QObject *parent)
    : QStyledItemDelegate(parent)
{
}

QWidget *Listview_delgate::createEditor(QWidget *parent, const QStyleOptionViewItem &option, const QModelIndex &index) const
{
    Q_UNUSED(option)

    if (!index.isValid())
        return nullptr;

    QComboBox *editor = new QComboBox(parent);
    editor->setModel(index.model()->data(index, Qt::EditRole).value<QAbstractListModel*>());

    return editor;
}

void Listview_delgate::setEditorData(QWidget *editor, const QModelIndex &index) const
{
    if (!index.isValid())
        return;

    QComboBox *comboBox = qobject_cast<QComboBox*>(editor);
    if (comboBox)
    {
        QString currentText = index.model()->data(index, Qt::EditRole).toString();
        int currentIndex = comboBox->findText(currentText);
        comboBox->setCurrentIndex(currentIndex);
    }
}

void Listview_delgate::setModelData(QWidget *editor, QAbstractItemModel *model, const QModelIndex &index) const
{
    if (!index.isValid())
        return;

    QComboBox *comboBox = qobject_cast<QComboBox*>(editor);
    if (comboBox)
    {
        QString selectedText = comboBox->currentText();
        model->setData(index, selectedText, Qt::EditRole);
    }
}
void Listview_delgate::paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const
{
    QStyledItemDelegate::paint(painter, option, index);

    if (index.parent().isValid())
    {
        // 设置字体颜色为白色
        painter->setPen(Qt::white);

        // 绘制文本
        QString text = index.data(Qt::DisplayRole).toString();
        painter->drawText(option.rect, Qt::AlignLeft | Qt::AlignVCenter, text);
    }
}