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-rw-r--r--src/datavisualization/data/surfaceitemmodelhandler.cpp94
1 files changed, 94 insertions, 0 deletions
diff --git a/src/datavisualization/data/surfaceitemmodelhandler.cpp b/src/datavisualization/data/surfaceitemmodelhandler.cpp
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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 "surfaceitemmodelhandler_p.h"
+#include <QTimer>
+
+QT_DATAVISUALIZATION_BEGIN_NAMESPACE
+
+SurfaceItemModelHandler::SurfaceItemModelHandler(QItemModelSurfaceDataProxy *proxy, QObject *parent)
+ : AbstractItemModelHandler(parent),
+ m_proxy(proxy)
+{
+}
+
+SurfaceItemModelHandler::~SurfaceItemModelHandler()
+{
+}
+
+// Resolve entire item model into QSurfaceDataArray.
+void SurfaceItemModelHandler::resolveModel()
+{
+ QItemModelSurfaceDataMapping *mapping = static_cast<QItemModelSurfaceDataMapping *>(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;
+ }
+
+ QSurfaceDataArray *newProxyArray = new QSurfaceDataArray;
+ 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++) {
+ QSurfaceDataRow *newProxyRow = new QSurfaceDataRow(columnCount);
+ for (int j = 0; j < columnCount; j++)
+ (*newProxyRow)[j] = 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) {
+ QSurfaceDataRow *newProxyRow = new QSurfaceDataRow(columnList.size());
+ for (int i = 0; i < columnList.size(); i++)
+ (*newProxyRow)[i] = itemValueMap[rowKey][columnList.at(i)];
+ newProxyArray->append(newProxyRow);
+ }
+ }
+
+ m_proxy->resetArray(newProxyArray);
+}
+
+QT_DATAVISUALIZATION_END_NAMESPACE