Hello
I'm subclassing QHeaderView based on this example and on @Oak77 's post here. The filters are working fine but I can't resize the headers or even click them for sorting. Method resizeColumnsToContents() also doesn't work. What might be wrong?
#include "filterheader.h"
#include "copytable.h"
#include <QHeaderView>
#include <QTableView>
#include <QLineEdit>
#include <QScrollBar>
FilterHeader::FilterHeader(QTableView *parent) :
QHeaderView(Qt::Horizontal, parent)
{
_padding = 4;
setStretchLastSection(true);
setSectionResizeMode(QHeaderView::Stretch);
setDefaultAlignment(Qt::AlignLeft | Qt::AlignVCenter);
setSortIndicatorShown(false);
connect(this, &QHeaderView::sectionResized, this, &FilterHeader::adjustPositions);
connect(parent->horizontalScrollBar(), &QScrollBar::valueChanged, this, &FilterHeader::adjustPositions);
}
FilterHeader::FilterHeader(CopyTable *parent) :
QHeaderView(Qt::Horizontal, parent)
{
_padding = 4;
setStretchLastSection(true);
setSectionResizeMode(QHeaderView::Stretch);
setDefaultAlignment(Qt::AlignLeft | Qt::AlignVCenter);
setSortIndicatorShown(false);
connect(this, &QHeaderView::sectionResized, this, &FilterHeader::adjustPositions);
connect(parent->horizontalScrollBar(), &QScrollBar::valueChanged, this, &FilterHeader::adjustPositions);
show();
}
void FilterHeader::setFilterBoxes(int count)
{
while (!_editors.empty())
{
QLineEdit* editor = _editors.back();
_editors.pop_back();
editor->deleteLater();
}
for (int i = 0; i < count; i++)
{
QLineEdit* editor = new QLineEdit(parentWidget());
editor->setPlaceholderText("Filter");
connect(editor, &QLineEdit::returnPressed, this, &FilterHeader::emitFilterActivated);
_editors.push_back(editor);
editor->show();
}
adjustPositions();
}
void FilterHeader::emitFilterActivated()
{
emit filterActivated(_editors.indexOf(sender()));
}
QSize FilterHeader::sizeHint() const
{
QSize size = QHeaderView::sizeHint();
if (!_editors.empty())
{
int height = _editors[0]->sizeHint().height();
size.setHeight(size.height() + height + _padding);
}
return size;
}
void FilterHeader::updateGeometries()
{
if (!_editors.empty())
{
int height = _editors[0]->sizeHint().height();
setViewportMargins(0, 0, 0, height + _padding);
}
else
setViewportMargins(0, 0, 0, 0);
QHeaderView::updateGeometries();
adjustPositions();
}
void FilterHeader::adjustPositions()
{
for (int i = 0; i < _editors.size(); i++)
{
QLineEdit* editor = _editors[i];
int height = editor->sizeHint().height();
editor->move(sectionPosition(i) - offset() + qobject_cast<QTableView*>(parent())->verticalHeader()->width(), height + (_padding / 2));
editor->resize(sectionSize(i), height);
}
}
QString FilterHeader::filterText(int index) const
{
if (index >= 0 && index < _editors.size())
return _editors[index]->text();
return QString();
}
void FilterHeader::setFilterText(int index, const QString& text)
{
if (index >= 0 && index < _editors.size())
_editors[index]->setText(text);
}
void FilterHeader::clearFilters()
{
for (auto editor : _editors)
editor->clear();
}
Code below at the end of the function that loads the tableView
FilterHeader* header = new FilterHeader(ui->tableView);
ui->tableView->setHorizontalHeader(header);
header->setFilterBoxes(model->columnCount());
connect(header, &FilterHeader::filterActivated, this, &Extratos::handleFilterActivated);
