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// Copyright (C) 2026 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
#include "piemappermodel.h"
static constexpr int LabelColumn = 0;
static constexpr int ColumnCount = 3;
PieMapperModel::PieMapperModel(QObject *parent)
: QAbstractTableModel(parent)
{
const qreal values[] = {10.0, 7.5, 8.5, 12.0, 5.0, 9.0, 3.0, 6.0};
int i = 0;
for (const qreal value : values)
m_data.append({QStringLiteral("Slice %1").arg(i++), value, 0.0});
connect(this, &QAbstractItemModel::modelReset, this, [this] {
++m_modelResetCount;
Q_EMIT modelResetCountChanged();
});
}
int PieMapperModel::rowCount(const QModelIndex &parent) const
{
return parent.isValid() ? 0 : m_data.size();
}
int PieMapperModel::columnCount(const QModelIndex &parent) const
{
return parent.isValid() ? 0 : ColumnCount;
}
QVariant PieMapperModel::headerData(int section, Qt::Orientation orientation, int role) const
{
if (role != Qt::DisplayRole)
return {};
if (orientation == Qt::Vertical)
return section;
switch (section) {
case 0:
return QStringLiteral("label");
case 1:
return QStringLiteral("value");
default:
return QStringLiteral("spare");
}
}
QVariant PieMapperModel::data(const QModelIndex &index, int role) const
{
if (!index.isValid() || (role != Qt::DisplayRole && role != Qt::EditRole))
return {};
return m_data.at(index.row()).at(index.column());
}
bool PieMapperModel::setData(const QModelIndex &index, const QVariant &value, int role)
{
if (!index.isValid() || role != Qt::EditRole)
return false;
m_data[index.row()][index.column()] = normalized(index.column(), value);
Q_EMIT dataChanged(index, index);
return true;
}
Qt::ItemFlags PieMapperModel::flags(const QModelIndex &index) const
{
return QAbstractTableModel::flags(index) | Qt::ItemIsEditable;
}
bool PieMapperModel::insertRows(int row, int count, const QModelIndex &parent)
{
if (parent.isValid() || row < 0 || row > m_data.size() || count < 1)
return false;
beginInsertRows(parent, row, row + count - 1);
for (int i = 0; i < count; ++i)
m_data.insert(row, {QString(), 0.0, 0.0});
endInsertRows();
if (m_resetOnStructuralChange)
reportReset();
return true;
}
bool PieMapperModel::removeRows(int row, int count, const QModelIndex &parent)
{
if (parent.isValid() || row < 0 || count < 1 || row + count > m_data.size())
return false;
beginRemoveRows(parent, row, row + count - 1);
m_data.remove(row, count);
endRemoveRows();
if (m_resetOnStructuralChange)
reportReset();
return true;
}
void PieMapperModel::setResetOnStructuralChange(bool enable)
{
if (m_resetOnStructuralChange == enable)
return;
m_resetOnStructuralChange = enable;
Q_EMIT resetOnStructuralChangeChanged();
}
void PieMapperModel::addRow(const QString &label, qreal value)
{
beginInsertRows({}, m_data.size(), m_data.size());
m_data.append({label, value, 0.0});
endInsertRows();
}
void PieMapperModel::removeLastRow()
{
if (m_data.isEmpty())
return;
beginRemoveRows({}, m_data.size() - 1, m_data.size() - 1);
m_data.removeLast();
endRemoveRows();
}
void PieMapperModel::editCell(int row, int column, const QVariant &value)
{
if (isValidCell(row, column))
setData(index(row, column), value);
}
void PieMapperModel::setCellSilently(int row, int column, const QVariant &value)
{
if (isValidCell(row, column))
m_data[row][column] = normalized(column, value);
}
void PieMapperModel::resetNow()
{
reportReset();
}
QVariant PieMapperModel::normalized(int column, const QVariant &value)
{
return column == LabelColumn ? QVariant(value.toString()) : QVariant(value.toReal());
}
bool PieMapperModel::isValidCell(int row, int column) const
{
return row >= 0 && row < m_data.size() && column >= 0 && column < ColumnCount;
}
void PieMapperModel::reportReset()
{
beginResetModel();
endResetModel();
}