freezetablewidget.cpp Example File

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 #include "freezetablewidget.h"

 #include <QScrollBar>
 #include <QHeaderView>

 FreezeTableWidget::FreezeTableWidget(QAbstractItemModel * model)
 {
       setModel(model);
       frozenTableView = new QTableView(this);

       init();

       //connect the headers and scrollbars of both tableviews together
       connect(horizontalHeader(),&QHeaderView::sectionResized, this,
               &FreezeTableWidget::updateSectionWidth);
       connect(verticalHeader(),&QHeaderView::sectionResized, this,
               &FreezeTableWidget::updateSectionHeight);

       connect(frozenTableView->verticalScrollBar(), &QAbstractSlider::valueChanged,
               verticalScrollBar(), &QAbstractSlider::setValue);
       connect(verticalScrollBar(), &QAbstractSlider::valueChanged,
               frozenTableView->verticalScrollBar(), &QAbstractSlider::setValue);

 }

 FreezeTableWidget::~FreezeTableWidget()
 {
       delete frozenTableView;
 }

 void FreezeTableWidget::init()
 {
       frozenTableView->setModel(model());
       frozenTableView->setFocusPolicy(Qt::NoFocus);
       frozenTableView->verticalHeader()->hide();
       frozenTableView->horizontalHeader()->setSectionResizeMode(QHeaderView::Fixed);

       viewport()->stackUnder(frozenTableView);

       frozenTableView->setStyleSheet("QTableView { border: none;"
                                      "background-color: #8EDE21;"
                                      "selection-background-color: #999}"); //for demo purposes
       frozenTableView->setSelectionModel(selectionModel());
       for (int col = 1; col < model()->columnCount(); ++col)
             frozenTableView->setColumnHidden(col, true);

       frozenTableView->setColumnWidth(0, columnWidth(0) );

       frozenTableView->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
       frozenTableView->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
       frozenTableView->show();

       updateFrozenTableGeometry();

       setHorizontalScrollMode(ScrollPerPixel);
       setVerticalScrollMode(ScrollPerPixel);
       frozenTableView->setVerticalScrollMode(ScrollPerPixel);
 }

 void FreezeTableWidget::updateSectionWidth(int logicalIndex, int /* oldSize */, int newSize)
 {
       if (logicalIndex == 0){
             frozenTableView->setColumnWidth(0, newSize);
             updateFrozenTableGeometry();
       }
 }

 void FreezeTableWidget::updateSectionHeight(int logicalIndex, int /* oldSize */, int newSize)
 {
       frozenTableView->setRowHeight(logicalIndex, newSize);
 }

 void FreezeTableWidget::resizeEvent(QResizeEvent * event)
 {
       QTableView::resizeEvent(event);
       updateFrozenTableGeometry();
  }

 QModelIndex FreezeTableWidget::moveCursor(CursorAction cursorAction,
                                           Qt::KeyboardModifiers modifiers)
 {
       QModelIndex current = QTableView::moveCursor(cursorAction, modifiers);

       if (cursorAction == MoveLeft && current.column() > 0
               && visualRect(current).topLeft().x() < frozenTableView->columnWidth(0) ){
             const int newValue = horizontalScrollBar()->value() + visualRect(current).topLeft().x()
                                  - frozenTableView->columnWidth(0);
             horizontalScrollBar()->setValue(newValue);
       }
       return current;
 }

 void FreezeTableWidget::scrollTo (const QModelIndex & index, ScrollHint hint){
     if (index.column() > 0)
         QTableView::scrollTo(index, hint);
 }

 void FreezeTableWidget::updateFrozenTableGeometry()
 {
       frozenTableView->setGeometry(verticalHeader()->width() + frameWidth(),
                                    frameWidth(), columnWidth(0),
                                    viewport()->height()+horizontalHeader()->height());
 }