variantdataset.cpp Example File | Qt Data Visualization 5.9

Qt 5.9 | Qt Data Visualization | Custom Proxy Example | variantdataset.cpp Example File

Qt 5.9.4 Reference Documentation

# variantdataset.cpp Example File

customproxy/variantdataset.cpp

      /****************************************************************************
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      ** Contact: https://www.qt.io/licensing/
      **
      ** This file is part of the Qt Data Visualization module of the Qt Toolkit.
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      #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;
      }