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Details

Type: Bug
Resolution: Fixed
Priority: P2: Important
Fix Version/s: 6.9.0 FF
Affects Version/s: 6.5.3, 6.6.3, 6.7.2
Component/s: Widgets: Style Sheets, Widgets: Styles
Labels:
None

Platform/s:

All
Commits:
f414c490d (dev)

Description

We had to port code to Qt6, and one of the things that broke was the QTableView.

In Qt 5,15 and earlier, applying a style sheet with custom checkbox indicators worked fine.
In Qt 6.5.3, the custom image indicators overlapped over the default checkboxes and item text.
In Qt 6.6.3 and 6.7.2, the custom image indicators show fine, the default indicators no longer show, but the indicators are still overlapping the text.

Simple example to reproduce:

main.cpp

#include "mymodel.h"
#include <QApplication>
#include <QTableView>

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    QTableView tableView;
    MyModel myModel;
    tableView.setModel(&myModel);

    QString viewStyle = "QTableView::item { padding: 10px; }\n"
                        "QTableView::indicator { width: 30px; height: 30px; }\n"
                        "QTableView::indicator:unchecked { image: url(:/checkbox_unselected.png); }\n"
                        "QTableView::indicator:checked { image: url(:/checkbox_selected.png); } ";
    tableView.setStyleSheet(viewStyle);
    tableView.setColumnWidth(0, 100);
    tableView.setColumnWidth(1, 100);
    tableView.setColumnWidth(2, 100);
    tableView.setRowHeight(0, 100);
    tableView.setRowHeight(1, 100);

    tableView.show();
    return a.exec();
}

mymodel.h:

#include <QAbstractTableModel>

class MyModel : public QAbstractTableModel
{
public:
    explicit MyModel(QObject *parent = nullptr);
    int rowCount(const QModelIndex &parent = QModelIndex()) const override;
    int columnCount(const QModelIndex &parent = QModelIndex()) const override;
    QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const override;
};

mymodel.cpp:

#include "mymodel.h"

MyModel::MyModel(QObject *parent) : QAbstractTableModel(parent)  { }

int MyModel::rowCount(const QModelIndex & /*parent*/) const
{
    return 2;
}

int MyModel::columnCount(const QModelIndex & /*parent*/) const
{
    return 3;
}

QVariant MyModel::data(const QModelIndex &index, int role) const
{
    if (role == Qt::DisplayRole) {
        return QString("Row%1, Column%2").arg(index.row() + 1).arg(index.column() +1);
    }
    else if (role == Qt::CheckStateRole) {
        return (index.column() == 0) ? Qt::Checked : Qt::Unchecked;
    }
    return QVariant();
}