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<h1 class="title">pentool.cpp Example File</h1>
<span class="subtitle">piechartcustomization/pentool.cpp</span>
<!-- $$$piechartcustomization/pentool.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;pentool.h&quot;</span>
  <span class="preprocessor">#include &lt;QtWidgets/QPushButton&gt;</span>
  <span class="preprocessor">#include &lt;QtWidgets/QDoubleSpinBox&gt;</span>
  <span class="preprocessor">#include &lt;QtWidgets/QComboBox&gt;</span>
  <span class="preprocessor">#include &lt;QtWidgets/QFormLayout&gt;</span>
  <span class="preprocessor">#include &lt;QtWidgets/QColorDialog&gt;</span>

  PenTool<span class="operator">::</span>PenTool(<span class="type">QString</span> title<span class="operator">,</span> <span class="type">QWidget</span> <span class="operator">*</span>parent)
      : <span class="type">QWidget</span>(parent)
  {
      setWindowTitle(title);
      setWindowFlags(<span class="type">Qt</span><span class="operator">::</span>Tool);

      m_colorButton <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QPushButton</span>();

      m_widthSpinBox <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QDoubleSpinBox</span>();

      m_styleCombo <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QComboBox</span>();
      m_styleCombo<span class="operator">-</span><span class="operator">&gt;</span>addItem(<span class="string">&quot;NoPen&quot;</span>);
      m_styleCombo<span class="operator">-</span><span class="operator">&gt;</span>addItem(<span class="string">&quot;SolidLine&quot;</span>);
      m_styleCombo<span class="operator">-</span><span class="operator">&gt;</span>addItem(<span class="string">&quot;DashLine&quot;</span>);
      m_styleCombo<span class="operator">-</span><span class="operator">&gt;</span>addItem(<span class="string">&quot;DotLine&quot;</span>);
      m_styleCombo<span class="operator">-</span><span class="operator">&gt;</span>addItem(<span class="string">&quot;DashDotLine&quot;</span>);
      m_styleCombo<span class="operator">-</span><span class="operator">&gt;</span>addItem(<span class="string">&quot;DashDotDotLine&quot;</span>);

      m_capStyleCombo <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QComboBox</span>();
      m_capStyleCombo<span class="operator">-</span><span class="operator">&gt;</span>addItem(<span class="string">&quot;FlatCap&quot;</span><span class="operator">,</span> <span class="type">Qt</span><span class="operator">::</span>FlatCap);
      m_capStyleCombo<span class="operator">-</span><span class="operator">&gt;</span>addItem(<span class="string">&quot;SquareCap&quot;</span><span class="operator">,</span> <span class="type">Qt</span><span class="operator">::</span>SquareCap);
      m_capStyleCombo<span class="operator">-</span><span class="operator">&gt;</span>addItem(<span class="string">&quot;RoundCap&quot;</span><span class="operator">,</span> <span class="type">Qt</span><span class="operator">::</span>RoundCap);

      m_joinStyleCombo <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QComboBox</span>();
      m_joinStyleCombo<span class="operator">-</span><span class="operator">&gt;</span>addItem(<span class="string">&quot;MiterJoin&quot;</span><span class="operator">,</span> <span class="type">Qt</span><span class="operator">::</span>MiterJoin);
      m_joinStyleCombo<span class="operator">-</span><span class="operator">&gt;</span>addItem(<span class="string">&quot;BevelJoin&quot;</span><span class="operator">,</span> <span class="type">Qt</span><span class="operator">::</span>BevelJoin);
      m_joinStyleCombo<span class="operator">-</span><span class="operator">&gt;</span>addItem(<span class="string">&quot;RoundJoin&quot;</span><span class="operator">,</span> <span class="type">Qt</span><span class="operator">::</span>RoundJoin);
      m_joinStyleCombo<span class="operator">-</span><span class="operator">&gt;</span>addItem(<span class="string">&quot;SvgMiterJoin&quot;</span><span class="operator">,</span> <span class="type">Qt</span><span class="operator">::</span>SvgMiterJoin);

      <span class="type">QFormLayout</span> <span class="operator">*</span>layout <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QFormLayout</span>();
      layout<span class="operator">-</span><span class="operator">&gt;</span>addRow(<span class="string">&quot;Color&quot;</span><span class="operator">,</span> m_colorButton);
      layout<span class="operator">-</span><span class="operator">&gt;</span>addRow(<span class="string">&quot;Width&quot;</span><span class="operator">,</span> m_widthSpinBox);
      layout<span class="operator">-</span><span class="operator">&gt;</span>addRow(<span class="string">&quot;Style&quot;</span><span class="operator">,</span> m_styleCombo);
      layout<span class="operator">-</span><span class="operator">&gt;</span>addRow(<span class="string">&quot;Cap style&quot;</span><span class="operator">,</span> m_capStyleCombo);
      layout<span class="operator">-</span><span class="operator">&gt;</span>addRow(<span class="string">&quot;Join style&quot;</span><span class="operator">,</span> m_joinStyleCombo);
      setLayout(layout);

      <span class="comment">// Use old style connect on some signals because the signal is overloaded</span>
      connect(m_colorButton<span class="operator">,</span> <span class="operator">&amp;</span><span class="type">QPushButton</span><span class="operator">::</span>clicked<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&amp;</span>PenTool<span class="operator">::</span>showColorDialog);
      connect(m_widthSpinBox<span class="operator">,</span>
              <span class="keyword">static_cast</span><span class="operator">&lt;</span><span class="type">void</span> (<span class="type">QDoubleSpinBox</span><span class="operator">::</span><span class="operator">*</span>)(<span class="type">double</span>)<span class="operator">&gt;</span>(<span class="operator">&amp;</span><span class="type">QDoubleSpinBox</span><span class="operator">::</span>valueChanged)<span class="operator">,</span>
              <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&amp;</span>PenTool<span class="operator">::</span>updateWidth);
      connect(m_styleCombo<span class="operator">,</span>
              <span class="keyword">static_cast</span><span class="operator">&lt;</span><span class="type">void</span> (<span class="type">QComboBox</span><span class="operator">::</span><span class="operator">*</span>)(<span class="type">int</span>)<span class="operator">&gt;</span>(<span class="operator">&amp;</span><span class="type">QComboBox</span><span class="operator">::</span>currentIndexChanged)<span class="operator">,</span>
              <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&amp;</span>PenTool<span class="operator">::</span>updateStyle);
      connect(m_capStyleCombo<span class="operator">,</span>
              <span class="keyword">static_cast</span><span class="operator">&lt;</span><span class="type">void</span> (<span class="type">QComboBox</span><span class="operator">::</span><span class="operator">*</span>)(<span class="type">int</span>)<span class="operator">&gt;</span>(<span class="operator">&amp;</span><span class="type">QComboBox</span><span class="operator">::</span>currentIndexChanged)<span class="operator">,</span>
              <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&amp;</span>PenTool<span class="operator">::</span>updateCapStyle);
      connect(m_joinStyleCombo<span class="operator">,</span>
              <span class="keyword">static_cast</span><span class="operator">&lt;</span><span class="type">void</span> (<span class="type">QComboBox</span><span class="operator">::</span><span class="operator">*</span>)(<span class="type">int</span>)<span class="operator">&gt;</span>(<span class="operator">&amp;</span><span class="type">QComboBox</span><span class="operator">::</span>currentIndexChanged)<span class="operator">,</span>
              <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&amp;</span>PenTool<span class="operator">::</span>updateJoinStyle);
  }

  <span class="type">void</span> PenTool<span class="operator">::</span>setPen(<span class="keyword">const</span> <span class="type">QPen</span> <span class="operator">&amp;</span>pen)
  {
      m_pen <span class="operator">=</span> pen;
      m_colorButton<span class="operator">-</span><span class="operator">&gt;</span>setText(m_pen<span class="operator">.</span>color()<span class="operator">.</span>name());
      m_widthSpinBox<span class="operator">-</span><span class="operator">&gt;</span>setValue(m_pen<span class="operator">.</span>widthF());
      m_styleCombo<span class="operator">-</span><span class="operator">&gt;</span>setCurrentIndex(m_pen<span class="operator">.</span>style()); <span class="comment">// index matches the enum</span>
      m_capStyleCombo<span class="operator">-</span><span class="operator">&gt;</span>setCurrentIndex(m_capStyleCombo<span class="operator">-</span><span class="operator">&gt;</span>findData(m_pen<span class="operator">.</span>capStyle()));
      m_joinStyleCombo<span class="operator">-</span><span class="operator">&gt;</span>setCurrentIndex(m_joinStyleCombo<span class="operator">-</span><span class="operator">&gt;</span>findData(m_pen<span class="operator">.</span>joinStyle()));
  }

  <span class="type">QPen</span> PenTool<span class="operator">::</span>pen() <span class="keyword">const</span>
  {
      <span class="keyword">return</span> m_pen;
  }

  <span class="type">QString</span> PenTool<span class="operator">::</span>name()
  {
      <span class="keyword">return</span> name(m_pen);
  }

  <span class="type">QString</span> PenTool<span class="operator">::</span>name(<span class="keyword">const</span> <span class="type">QPen</span> <span class="operator">&amp;</span>pen)
  {
      <span class="keyword">return</span> pen<span class="operator">.</span>color()<span class="operator">.</span>name() <span class="operator">+</span> <span class="string">&quot;:&quot;</span> <span class="operator">+</span> <span class="type">QString</span><span class="operator">::</span>number(pen<span class="operator">.</span>widthF());
  }

  <span class="type">void</span> PenTool<span class="operator">::</span>showColorDialog()
  {
      <span class="type">QColorDialog</span> dialog(m_pen<span class="operator">.</span>color());
      dialog<span class="operator">.</span>show();
      dialog<span class="operator">.</span>exec();
      m_pen<span class="operator">.</span>setColor(dialog<span class="operator">.</span>selectedColor());
      m_colorButton<span class="operator">-</span><span class="operator">&gt;</span>setText(m_pen<span class="operator">.</span>color()<span class="operator">.</span>name());
      <span class="keyword">emit</span> changed();
  }

  <span class="type">void</span> PenTool<span class="operator">::</span>updateWidth(<span class="type">double</span> width)
  {
      <span class="keyword">if</span> (<span class="operator">!</span>qFuzzyCompare((<span class="type">qreal</span>) width<span class="operator">,</span> m_pen<span class="operator">.</span>widthF())) {
          m_pen<span class="operator">.</span>setWidthF(width);
          <span class="keyword">emit</span> changed();
      }
  }

  <span class="type">void</span> PenTool<span class="operator">::</span>updateStyle(<span class="type">int</span> style)
  {
      <span class="keyword">if</span> (m_pen<span class="operator">.</span>style() <span class="operator">!</span><span class="operator">=</span> style) {
          m_pen<span class="operator">.</span>setStyle((<span class="type">Qt</span><span class="operator">::</span>PenStyle) style);
          <span class="keyword">emit</span> changed();
      }
  }

  <span class="type">void</span> PenTool<span class="operator">::</span>updateCapStyle(<span class="type">int</span> index)
  {
      <span class="type">Qt</span><span class="operator">::</span>PenCapStyle capStyle <span class="operator">=</span> (<span class="type">Qt</span><span class="operator">::</span>PenCapStyle) m_capStyleCombo<span class="operator">-</span><span class="operator">&gt;</span>itemData(index)<span class="operator">.</span>toInt();
      <span class="keyword">if</span> (m_pen<span class="operator">.</span>capStyle() <span class="operator">!</span><span class="operator">=</span> capStyle) {
          m_pen<span class="operator">.</span>setCapStyle(capStyle);
          <span class="keyword">emit</span> changed();
      }
  }

  <span class="type">void</span> PenTool<span class="operator">::</span>updateJoinStyle(<span class="type">int</span> index)
  {
      <span class="type">Qt</span><span class="operator">::</span>PenJoinStyle joinStyle <span class="operator">=</span> (<span class="type">Qt</span><span class="operator">::</span>PenJoinStyle) m_joinStyleCombo<span class="operator">-</span><span class="operator">&gt;</span>itemData(index)<span class="operator">.</span>toInt();
      <span class="keyword">if</span> (m_pen<span class="operator">.</span>joinStyle() <span class="operator">!</span><span class="operator">=</span> joinStyle) {
          m_pen<span class="operator">.</span>setJoinStyle(joinStyle);
          <span class="keyword">emit</span> changed();
      }
  }

  <span class="preprocessor">#include &quot;moc_pentool.cpp&quot;</span>

</pre>
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<!-- @@@piechartcustomization/pentool.cpp -->
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