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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 "variantbardataproxy.h"
using namespace QtDataVis3D;
VariantBarDataProxy::VariantBarDataProxy() :
QBarDataProxy()
{
}
VariantBarDataProxy::VariantBarDataProxy(VariantDataSet *newSet,
VariantBarDataMapping *mapping) :
QBarDataProxy()
{
setDataSet(newSet);
setMapping(mapping);
}
VariantBarDataProxy::~VariantBarDataProxy()
{
}
void VariantBarDataProxy::setDataSet(VariantDataSet *newSet)
{
if (!m_dataSet.isNull())
QObject::disconnect(m_dataSet.data(), 0, this, 0);
m_dataSet = newSet;
if (!m_dataSet.isNull()) {
QObject::connect(m_dataSet.data(), &VariantDataSet::itemsAdded, this, &VariantBarDataProxy::handleItemsAdded);
QObject::connect(m_dataSet.data(), &VariantDataSet::dataCleared, this, &VariantBarDataProxy::handleDataCleared);
}
resolveDataSet();
}
VariantDataSet *VariantBarDataProxy::dataSet()
{
return m_dataSet.data();
}
void VariantBarDataProxy::setMapping(VariantBarDataMapping *mapping)
{
if (!m_mapping.isNull())
QObject::disconnect(m_mapping.data(), &VariantBarDataMapping::mappingChanged, this, &VariantBarDataProxy::handleMappingChanged);
m_mapping = mapping;
if (!m_mapping.isNull())
QObject::connect(m_mapping.data(), &VariantBarDataMapping::mappingChanged, this, &VariantBarDataProxy::handleMappingChanged);
resolveDataSet();
}
VariantBarDataMapping *VariantBarDataProxy::mapping()
{
return m_mapping.data();
}
void VariantBarDataProxy::handleItemsAdded(int index, int count)
{
Q_UNUSED(index)
Q_UNUSED(count)
// Resolve new items
resolveDataSet(); // TODO Resolving entire dataset is inefficient
}
void VariantBarDataProxy::handleDataCleared()
{
// Data cleared, reset array
resetArray(0);
}
void VariantBarDataProxy::handleMappingChanged()
{
resolveDataSet();
}
// Resolve entire dataset into QBarDataArray.
void VariantBarDataProxy::resolveDataSet()
{
if (m_dataSet.isNull() || m_mapping.isNull() || !m_mapping->rowCategories().size() || !m_mapping->columnCategories().size()) {
resetArray(0);
return;
}
const VariantDataItemList &itemList = m_dataSet->itemList();
int rowIndex = m_mapping->rowIndex();
int columnIndex = m_mapping->columnIndex();
int valueIndex = m_mapping->valueIndex();
const QStringList &rowList = m_mapping->rowCategories();
const QStringList &columnList = m_mapping->columnCategories();
// Sort values into rows and columns
typedef QHash<QString, qreal> ColumnValueMap;
QHash <QString, ColumnValueMap> itemValueMap;
foreach (const VariantDataItem *item, itemList)
itemValueMap[item->at(rowIndex).toString()][item->at(columnIndex).toString()] = item->at(valueIndex).toReal();
// Create new data array from itemValueMap
QBarDataArray *newProxyArray = new QBarDataArray;
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);
}
resetArray(newProxyArray);
}
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