Get checkbox of QStandardItem

[Neptilo]

So how to use these?

I'm not sure but I suspect this will paint the default icons in their default size, so much too small in the case of Android. Or are you thinking of a way to resize them?

Anyway I'm experimenting with the advice in your previous post now and I feel like it will do fine.

[Neptilo]

I managed to get by with the paint() method, but I'm kinda stuck with editorEvent(). Edit: I had a look at QItemDelegate source and found how to do it:

bool CheckableItemDelegate::editorEvent(QEvent *event, QAbstractItemModel *model, const QStyleOptionViewItem &option, const QModelIndex &index)
{
    Q_UNUSED(option);
    if (event->type() == QEvent::MouseButtonRelease) {
        QVariant value = index.data(Qt::CheckStateRole);
        Qt::CheckState state = (static_cast<Qt::CheckState>(value.toInt()) == Qt::Checked
                                ? Qt::Unchecked : Qt::Checked);
        return model->setData(index, state, Qt::CheckStateRole);
    } else
        return false;
}

bool CheckableItemDelegate::editorEvent(QEvent *event, QAbstractItemModel *model, const QStyleOptionViewItem &option, const QModelIndex &index)
{
    Q_UNUSED(option);
    if (event->type() == QEvent::MouseButtonRelease) {
        QVariant value = index.data(Qt::CheckStateRole);
        Qt::CheckState state = (static_cast<Qt::CheckState>(value.toInt()) == Qt::Checked
                                ? Qt::Unchecked : Qt::Checked);
        return model->setData(index, state, Qt::CheckStateRole);
    } else
        return false;
}

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This will intercept all mouse clicks on the item (and I'm ok with it).

[Neptilo]

Update:

I think I nailed it, hinted by this post.

So I subclassed QProxyStyle as AndroidStyle and reimplemented QProxyStyle::pixelMetric this way:

int AndroidStyle::pixelMetric(PixelMetric which,
                             const QStyleOption *option,
                             const QWidget *widget) const
{
    int metric = QProxyStyle::pixelMetric(which, option, widget);
    switch (which) {
    case PM_IndicatorWidth:
    case PM_IndicatorHeight:
        return 2*metric;
    default:
        return metric;
    }
}

int AndroidStyle::pixelMetric(PixelMetric which,
                             const QStyleOption *option,
                             const QWidget *widget) const
{
    int metric = QProxyStyle::pixelMetric(which, option, widget);
    switch (which) {
    case PM_IndicatorWidth:
    case PM_IndicatorHeight:
        return 2*metric;
    default:
        return metric;
    }
}

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and I set this style in the main function like this:

QApplication a(argc, argv);
a.setStyle(new AndroidStyle);

QApplication a(argc, argv);
a.setStyle(new AndroidStyle);

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