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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
#include "freezetablewidget.h"
#include <QScrollBar>
#include <QHeaderView>
//! [constructor]
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);
}
//! [constructor]
FreezeTableWidget::~FreezeTableWidget()
{
delete frozenTableView;
}
//! [init part1]
void FreezeTableWidget::init()
{
frozenTableView->setModel(model());
frozenTableView->setFocusPolicy(Qt::NoFocus);
frozenTableView->verticalHeader()->hide();
frozenTableView->horizontalHeader()->setSectionResizeMode(QHeaderView::Fixed);
viewport()->stackUnder(frozenTableView);
//! [init part1]
//! [init part2]
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);
}
//! [init part2]
//! [sections]
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);
}
//! [sections]
//! [resize]
void FreezeTableWidget::resizeEvent(QResizeEvent * event)
{
QTableView::resizeEvent(event);
updateFrozenTableGeometry();
}
//! [resize]
//! [navigate]
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;
}
//! [navigate]
void FreezeTableWidget::scrollTo (const QModelIndex & index, ScrollHint hint){
if (index.column() > 0)
QTableView::scrollTo(index, hint);
}
//! [geometry]
void FreezeTableWidget::updateFrozenTableGeometry()
{
frozenTableView->setGeometry(verticalHeader()->width() + frameWidth(),
frameWidth(), columnWidth(0),
viewport()->height()+horizontalHeader()->height());
}
//! [geometry]
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