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<h1 class="title">customtablemodel.cpp Example File</h1>
<span class="subtitle">modeldata/customtablemodel.cpp</span>
<!-- $$$modeldata/customtablemodel.cpp-description -->
<div class="descr"> <a name="details"></a>
<pre class="cpp">

  <span class="comment">/****************************************************************************
  **
  ** Copyright (C) 2016 The Qt Company Ltd.
  ** Contact: https://www.qt.io/licensing/
  **
  ** This file is part of the Qt Charts 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.
  **
  ** $QT_END_LICENSE$
  **
  ****************************************************************************/</span>

  <span class="preprocessor">#include &quot;customtablemodel.h&quot;</span>
  <span class="preprocessor">#include &lt;QtCore/QVector&gt;</span>
  <span class="preprocessor">#include &lt;QtCore/QTime&gt;</span>
  <span class="preprocessor">#include &lt;QtCore/QRect&gt;</span>
  <span class="preprocessor">#include &lt;QtGui/QColor&gt;</span>

  CustomTableModel<span class="operator">::</span>CustomTableModel(<span class="type">QObject</span> <span class="operator">*</span>parent) :
      <span class="type">QAbstractTableModel</span>(parent)
  {
      qsrand(<span class="type">QTime</span>(<span class="number">0</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">0</span>)<span class="operator">.</span>secsTo(<span class="type">QTime</span><span class="operator">::</span>currentTime()));

      m_columnCount <span class="operator">=</span> <span class="number">4</span>;
      m_rowCount <span class="operator">=</span> <span class="number">15</span>;

      <span class="comment">// m_data</span>
      <span class="keyword">for</span> (<span class="type">int</span> i <span class="operator">=</span> <span class="number">0</span>; i <span class="operator">&lt;</span> m_rowCount; i<span class="operator">+</span><span class="operator">+</span>) {
          <span class="type">QVector</span><span class="operator">&lt;</span><span class="type">qreal</span><span class="operator">&gt;</span><span class="operator">*</span> dataVec <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QVector</span><span class="operator">&lt;</span><span class="type">qreal</span><span class="operator">&gt;</span>(m_columnCount);
          <span class="keyword">for</span> (<span class="type">int</span> k <span class="operator">=</span> <span class="number">0</span>; k <span class="operator">&lt;</span> dataVec<span class="operator">-</span><span class="operator">&gt;</span>size(); k<span class="operator">+</span><span class="operator">+</span>) {
              <span class="keyword">if</span> (k <span class="operator">%</span> <span class="number">2</span> <span class="operator">=</span><span class="operator">=</span> <span class="number">0</span>)
                  dataVec<span class="operator">-</span><span class="operator">&gt;</span>replace(k<span class="operator">,</span> i <span class="operator">*</span> <span class="number">50</span> <span class="operator">+</span> qrand() <span class="operator">%</span> <span class="number">20</span>);
              <span class="keyword">else</span>
                  dataVec<span class="operator">-</span><span class="operator">&gt;</span>replace(k<span class="operator">,</span> qrand() <span class="operator">%</span> <span class="number">100</span>);
          }
          m_data<span class="operator">.</span>append(dataVec);
      }
  }

  <span class="type">int</span> CustomTableModel<span class="operator">::</span>rowCount(<span class="keyword">const</span> <span class="type">QModelIndex</span> <span class="operator">&amp;</span>parent) <span class="keyword">const</span>
  {
      Q_UNUSED(parent)
      <span class="keyword">return</span> m_data<span class="operator">.</span>count();
  }

  <span class="type">int</span> CustomTableModel<span class="operator">::</span>columnCount(<span class="keyword">const</span> <span class="type">QModelIndex</span> <span class="operator">&amp;</span>parent) <span class="keyword">const</span>
  {
      Q_UNUSED(parent)
      <span class="keyword">return</span> m_columnCount;
  }

  <span class="type">QVariant</span> CustomTableModel<span class="operator">::</span>headerData(<span class="type">int</span> section<span class="operator">,</span> <span class="type">Qt</span><span class="operator">::</span>Orientation orientation<span class="operator">,</span> <span class="type">int</span> role) <span class="keyword">const</span>
  {
      <span class="keyword">if</span> (role <span class="operator">!</span><span class="operator">=</span> <span class="type">Qt</span><span class="operator">::</span>DisplayRole)
          <span class="keyword">return</span> <span class="type">QVariant</span>();

      <span class="keyword">if</span> (orientation <span class="operator">=</span><span class="operator">=</span> <span class="type">Qt</span><span class="operator">::</span>Horizontal) {
          <span class="keyword">if</span> (section <span class="operator">%</span> <span class="number">2</span> <span class="operator">=</span><span class="operator">=</span> <span class="number">0</span>)
              <span class="keyword">return</span> <span class="string">&quot;x&quot;</span>;
          <span class="keyword">else</span>
              <span class="keyword">return</span> <span class="string">&quot;y&quot;</span>;
      } <span class="keyword">else</span> {
          <span class="keyword">return</span> <span class="type">QString</span>(<span class="string">&quot;%1&quot;</span>)<span class="operator">.</span>arg(section <span class="operator">+</span> <span class="number">1</span>);
      }
  }

  <span class="type">QVariant</span> CustomTableModel<span class="operator">::</span>data(<span class="keyword">const</span> <span class="type">QModelIndex</span> <span class="operator">&amp;</span>index<span class="operator">,</span> <span class="type">int</span> role) <span class="keyword">const</span>
  {
      <span class="keyword">if</span> (role <span class="operator">=</span><span class="operator">=</span> <span class="type">Qt</span><span class="operator">::</span>DisplayRole) {
          <span class="keyword">return</span> m_data<span class="operator">[</span>index<span class="operator">.</span>row()<span class="operator">]</span><span class="operator">-</span><span class="operator">&gt;</span>at(index<span class="operator">.</span>column());
      } <span class="keyword">else</span> <span class="keyword">if</span> (role <span class="operator">=</span><span class="operator">=</span> <span class="type">Qt</span><span class="operator">::</span>EditRole) {
          <span class="keyword">return</span> m_data<span class="operator">[</span>index<span class="operator">.</span>row()<span class="operator">]</span><span class="operator">-</span><span class="operator">&gt;</span>at(index<span class="operator">.</span>column());
      } <span class="keyword">else</span> <span class="keyword">if</span> (role <span class="operator">=</span><span class="operator">=</span> <span class="type">Qt</span><span class="operator">::</span>BackgroundRole) {
          <span class="keyword">for</span> (<span class="keyword">const</span> <span class="type">QRect</span> <span class="operator">&amp;</span>rect : m_mapping) {
              <span class="keyword">if</span> (rect<span class="operator">.</span>contains(index<span class="operator">.</span>column()<span class="operator">,</span> index<span class="operator">.</span>row()))
                  <span class="keyword">return</span> <span class="type">QColor</span>(m_mapping<span class="operator">.</span>key(rect));
          }
          <span class="comment">// cell not mapped return white color</span>
          <span class="keyword">return</span> <span class="type">QColor</span>(<span class="type">Qt</span><span class="operator">::</span>white);
      }
      <span class="keyword">return</span> <span class="type">QVariant</span>();
  }

  bool CustomTableModel<span class="operator">::</span>setData(<span class="keyword">const</span> <span class="type">QModelIndex</span> <span class="operator">&amp;</span>index<span class="operator">,</span> <span class="keyword">const</span> <span class="type">QVariant</span> <span class="operator">&amp;</span>value<span class="operator">,</span> <span class="type">int</span> role)
  {
      <span class="keyword">if</span> (index<span class="operator">.</span>isValid() <span class="operator">&amp;</span><span class="operator">&amp;</span> role <span class="operator">=</span><span class="operator">=</span> <span class="type">Qt</span><span class="operator">::</span>EditRole) {
          m_data<span class="operator">[</span>index<span class="operator">.</span>row()<span class="operator">]</span><span class="operator">-</span><span class="operator">&gt;</span>replace(index<span class="operator">.</span>column()<span class="operator">,</span> value<span class="operator">.</span>toDouble());
          <span class="keyword">emit</span> dataChanged(index<span class="operator">,</span> index);
          <span class="keyword">return</span> <span class="keyword">true</span>;
      }
      <span class="keyword">return</span> <span class="keyword">false</span>;
  }

  <span class="type">Qt</span><span class="operator">::</span>ItemFlags CustomTableModel<span class="operator">::</span>flags(<span class="keyword">const</span> <span class="type">QModelIndex</span> <span class="operator">&amp;</span>index) <span class="keyword">const</span>
  {
      <span class="keyword">return</span> <span class="type">QAbstractItemModel</span><span class="operator">::</span>flags(index) <span class="operator">|</span> <span class="type">Qt</span><span class="operator">::</span>ItemIsEditable;
  }

  <span class="type">void</span> CustomTableModel<span class="operator">::</span>addMapping(<span class="type">QString</span> color<span class="operator">,</span> <span class="type">QRect</span> area)
  {
      m_mapping<span class="operator">.</span>insertMulti(color<span class="operator">,</span> area);
  }

</pre>
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<!-- @@@modeldata/customtablemodel.cpp -->
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