variantdataset.cpp Example File | Qt Data Visualization 5.12.6

Qt 5.12 | Qt Data Visualization | Custom Proxy Example | variantdataset.cpp Example File

Qt Data Visualization | Commercial or GPLv3

# variantdataset.cpp Example File

customproxy/variantdataset.cpp

      /****************************************************************************
      **
      ** Copyright (C) 2016 The Qt Company Ltd.
      ** Contact: https://www.qt.io/licensing/
      **
      ** This file is part of the Qt Data Visualization module of the Qt Toolkit.
      **
      ** $QT_BEGIN_LICENSE:GPL$
      ** Commercial License Usage
      ** Licensees holding valid commercial Qt licenses may use this file in
      ** accordance with the commercial license agreement provided with the
      ** Software or, alternatively, in accordance with the terms contained in
      ** a written agreement between you and The Qt Company. For licensing terms
      ** and conditions see https://www.qt.io/terms-conditions. For further
      ** information use the contact form at https://www.qt.io/contact-us.
      **
      ** GNU General Public License Usage
      ** Alternatively, this file may be used under the terms of the GNU
      ** General Public License version 3 or (at your option) any later version
      ** approved by the KDE Free Qt Foundation. The licenses are as published by
      ** the Free Software Foundation and appearing in the file LICENSE.GPL3
      ** included in the packaging of this file. Please review the following
      ** information to ensure the GNU General Public License requirements will
      ** be met: https://www.gnu.org/licenses/gpl-3.0.html.
      **
      ** $QT_END_LICENSE$
      **
      ****************************************************************************/

      #include "variantdataset.h"

      VariantDataSet::VariantDataSet()
          : QObject(0)
      {
      }

      VariantDataSet::~VariantDataSet()
      {
          clear();
      }

      void VariantDataSet::clear()
      {
          foreach (VariantDataItem *item, m_variantData) {
              item->clear();
              delete item;
          }
          m_variantData.clear();
          emit dataCleared();
      }

      int VariantDataSet::addItem(VariantDataItem *item)
      {
          m_variantData.append(item);
          int addIndex =  m_variantData.size();

          emit itemsAdded(addIndex, 1);
          return addIndex;
      }

      int VariantDataSet::addItems(VariantDataItemList *itemList)
      {
          int newCount = itemList->size();
          int addIndex = m_variantData.size();
          m_variantData.append(*itemList);
          delete itemList;
          emit itemsAdded(addIndex, newCount);
          return addIndex;
      }

      const VariantDataItemList &VariantDataSet::itemList() const
      {
          return m_variantData;
      }