#include "qtdialog.h"
#include <cassert>
#include <iostream>
#include <stdexcept>
#include <boost/numeric/conversion/cast.hpp>
#include <QHeaderView>
#include <QStandardItemModel>
#include "ui_qtdialog.h"
///A simple custom data type
///For now, its just contains a std::vector<std::string>
struct MyDataTable
{
MyDataTable() : data(CreateTable()) {}
std::vector<std::string> data;
static const std::vector<std::string> CreateTable()
{
return
{
"Black",
"Blue",
"Cyan",
"Green",
"Magenta"
"Red",
"White",
"Yellow",
};
}
};
struct MyModel : public QStandardItemModel
{
MyModel(QObject *parent = 0)
: QStandardItemModel(
0, //rows, will become 8
1, //columns, only 1 for now
parent
),
m_data(MyDataTable())
{
setColumnCount(1); //Only 1 for now
setHeaderData(0,Qt::Horizontal,"Color");
const int n_rows = boost::numeric_cast<int>(m_data.data.size());
for (int i=0; i!=n_rows; ++i)
{
QList<QStandardItem*> items;
//Add text
{
QStandardItem * const item = new QStandardItem;
item->setCheckable(false); //NO CHECKBOX!
items.push_back(item);
}
//Only have one column for now
assert(this->columnCount() == items.size());
this->appendRow(items);
}
assert(this->rowCount() == boost::numeric_cast<int>(m_data.data.size()));
}
///Implement virtual member function
QVariant data(const QModelIndex &index, int role) const
{
//Removing this line will cause checkboxes to appear
if (role != Qt::EditRole && role != Qt::DisplayRole) return QVariant();
assert(index.isValid());
assert(index.row() < boost::numeric_cast<int>(m_data.data.size()));
assert(index.column() < 1);
const std::string& row = m_data.data[ index.row() ];
switch (index.column())
{
case 0:
//Only 1 column for now
return QString(row.c_str());
default:
assert(!"Should not get here");
throw std::logic_error("MyModel::data");
}
}
///Implement virtual member function
bool setData(const QModelIndex &index, const QVariant &value, int /*role = Qt::EditRole*/)
{
assert(index.isValid());
assert(index.row() < boost::numeric_cast<int>(m_data.data.size()));
assert(index.column() < 1);
std::string& row = m_data.data[ index.row() ];
switch (index.column())
{
case 0:
//Only 1 column for now
row = value.toString().toStdString(); break;
default:
assert(!"Should not get here");
throw std::logic_error("MyModel::setData");
}
//Allows other views to synchronize on this model update
emit dataChanged(index,index); //From C++ GUI programming with Qt 4, 2nd edition
return false;
}
private:
///My custom data type
MyDataTable m_data;
};
QtDialog::QtDialog(QWidget *parent) :
QDialog(parent),
ui(new Ui::QtDialog),
m_model(new MyModel(this))
{
ui->setupUi(this);
ui->table->setModel(m_model);
assert(ui->table->model());
assert(m_model);
assert(ui->table->model() == m_model);
//Only one column for now
ui->table->setColumnWidth(0,175);
}
QtDialog::~QtDialog()
{
delete ui;
}
|
