File indexing completed on 2024-05-12 16:34:29

 /* This file is part of the KDE project
 * Copyright (c) 2010 Jan Hambrecht <jaham@gmx.net>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this library; see the file COPYING.LIB.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 */
 
 #include "MatrixDataModel.h"
 
 MatrixDataModel::MatrixDataModel(QObject *parent)
     : QAbstractTableModel(parent)
     , m_rows(0), m_cols(0)
 {
 }
 
 void MatrixDataModel::setMatrix(const QVector<qreal> &matrix, int rows, int cols)
 {
     m_matrix = matrix;
     m_rows = rows;
     m_cols = cols;
     Q_ASSERT(m_rows);
     Q_ASSERT(m_cols);
     Q_ASSERT(m_matrix.count() == m_rows*m_cols);
     reset();
 }
 
 QVector<qreal> MatrixDataModel::matrix() const
 {
     return m_matrix;
 }
 
 int MatrixDataModel::rowCount(const QModelIndex &/*parent*/) const
 {
     return m_rows;
 }
 
 int MatrixDataModel::columnCount(const QModelIndex &/*parent*/) const
 {
     return m_cols;
 }
 
 QVariant MatrixDataModel::data(const QModelIndex &index, int role) const
 {
     int element = index.row() * m_cols + index.column();
     switch(role) {
         case Qt::DisplayRole:
         case Qt::EditRole:
             return QVariant(QString("%1").arg(m_matrix[element], 2));
             break;
         default:
             return QVariant();
     }
 }
 
 bool MatrixDataModel::setData(const QModelIndex &index, const QVariant &value, int /*role*/)
 {
     int element = index.row() * m_cols + index.column();
     bool valid = false;
     qreal elementValue = value.toDouble(&valid);
     if (!valid)
         return false;
     m_matrix[element] = elementValue;
     emit dataChanged(index, index);
     return true;
 }
 
 Qt::ItemFlags MatrixDataModel::flags(const QModelIndex &/*index*/) const
 {
     return Qt::ItemIsEnabled|Qt::ItemIsSelectable|Qt::ItemIsEditable;
 }