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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 QtDataVisualization 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 "scatteritemmodelhandler_p.h"
#include <QTimer>
namespace QtDataVisualization {
/*!
* \class QtDataVisualization::ScatterItemModelHandler
* \internal
*/
ScatterItemModelHandler::ScatterItemModelHandler(QItemModelScatterDataProxy *proxy, QObject *parent)
: AbstractItemModelHandler(parent),
m_proxy(proxy),
m_proxyArray(0)
{
}
ScatterItemModelHandler::~ScatterItemModelHandler()
{
}
// Resolve entire item model into QScatterDataArray.
void ScatterItemModelHandler::resolveModel()
{
if (m_itemModel.isNull()) {
m_proxy->resetArray(0);
m_proxyArray = 0;
return;
}
static const int noRoleIndex = -1;
QHash<int, QByteArray> roleHash = m_itemModel->roleNames();
const int xPosRole = roleHash.key(m_proxy->xPosRole().toLatin1(), noRoleIndex);
const int yPosRole = roleHash.key(m_proxy->yPosRole().toLatin1(), noRoleIndex);
const int zPosRole = roleHash.key(m_proxy->zPosRole().toLatin1(), noRoleIndex);
const int columnCount = m_itemModel->columnCount();
const int rowCount = m_itemModel->rowCount();
const int totalCount = rowCount * columnCount;
int runningCount = 0;
// If dimensions have changed, recreate the array
if (m_proxyArray != m_proxy->array() || totalCount != m_proxyArray->size())
m_proxyArray = new QScatterDataArray(totalCount);
// Parse data into newProxyArray
for (int i = 0; i < rowCount; i++) {
for (int j = 0; j < columnCount; j++) {
QModelIndex index = m_itemModel->index(i, j);
float xPos(0.0f);
float yPos(0.0f);
float zPos(0.0f);
if (xPosRole != noRoleIndex)
xPos = index.data(xPosRole).toFloat();
if (yPosRole != noRoleIndex)
yPos = index.data(yPosRole).toFloat();
if (zPosRole != noRoleIndex)
zPos = index.data(zPosRole).toFloat();
(*m_proxyArray)[runningCount].setPosition(QVector3D(xPos, yPos, zPos));
runningCount++;
}
}
m_proxy->resetArray(m_proxyArray);
}
}
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