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/****************************************************************************
**
** Copyright (C) 2013 Digia Plc
** All rights reserved.
** For any questions to Digia, please use contact form at http://qt.digia.com
**
** This file is part of the QtDataVis3D module.
**
** Licensees holding valid Qt Enterprise licenses may use this file in
** accordance with the Qt Enterprise License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia.
**
** If you have questions regarding the use of this file, please use
** contact form at http://qt.digia.com
**
****************************************************************************/
#include "baritemmodelhandler_p.h"
#include <QTimer>
QT_DATAVIS3D_BEGIN_NAMESPACE
BarItemModelHandler::BarItemModelHandler(QItemModelBarDataProxy *proxy, QObject *parent)
: AbstractItemModelHandler(parent),
m_proxy(proxy)
{
}
BarItemModelHandler::~BarItemModelHandler()
{
}
// Resolve entire item model into QBarDataArray.
void BarItemModelHandler::resolveModel()
{
QItemModelBarDataMapping *mapping = static_cast<QItemModelBarDataMapping *>(m_activeMapping);
if (m_itemModel.isNull() || !mapping) {
m_proxy->resetArray(0);
return;
}
bool useModelRows(false);
if (!mapping->rowCategories().size() || !mapping->columnCategories().size()) {
useModelRows = true;
} else if (mapping->rowRole().isEmpty() || mapping->columnRole().isEmpty()) {
m_proxy->resetArray(0);
return;
}
QBarDataArray *newProxyArray = new QBarDataArray;
QHash<int, QByteArray> roleHash = m_itemModel->roleNames();
// Default to display role if no mapping
int valueRole = roleHash.key(mapping->valueRole().toLatin1(), Qt::DisplayRole);
int rowCount = m_itemModel->rowCount();
int columnCount = m_itemModel->columnCount();
if (useModelRows) {
for (int i = 0; i < rowCount; i++) {
QBarDataRow *newProxyRow = new QBarDataRow(columnCount);
for (int j = 0; j < columnCount; j++)
(*newProxyRow)[j].setValue(m_itemModel->index(i, j).data(valueRole).toReal());
newProxyArray->append(newProxyRow);
}
} else {
int rowRole = roleHash.key(mapping->rowRole().toLatin1());
int columnRole = roleHash.key(mapping->columnRole().toLatin1());
const QStringList &rowList = mapping->rowCategories();
const QStringList &columnList = mapping->columnCategories();
// Sort values into rows and columns
typedef QHash<QString, qreal> ColumnValueMap;
QHash <QString, ColumnValueMap> itemValueMap;
for (int i = 0; i < rowCount; i++) {
for (int j = 0; j < columnCount; j++) {
QModelIndex index = m_itemModel->index(i, j);
itemValueMap[index.data(rowRole).toString()][index.data(columnRole).toString()]
= index.data(valueRole).toReal();
}
}
// Create new data array from itemValueMap
foreach (QString rowKey, rowList) {
QBarDataRow *newProxyRow = new QBarDataRow(columnList.size());
for (int i = 0; i < columnList.size(); i++)
(*newProxyRow)[i].setValue(itemValueMap[rowKey][columnList.at(i)]);
newProxyArray->append(newProxyRow);
}
}
m_proxy->resetArray(newProxyArray);
}
QT_DATAVIS3D_END_NAMESPACE
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