Qt 5.7 | Qt Charts | Pie Chart Customization Example | customslice.cpp Example File

Qt 5.7.1 Reference Documentation

# customslice.cpp Example File

piechartcustomization/customslice.cpp

      /****************************************************************************
      **
      ** 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.
      **
      ** $QT_END_LICENSE$
      **
      ****************************************************************************/

      #include "customslice.h"

      QT_CHARTS_USE_NAMESPACE

      CustomSlice::CustomSlice(QString label, qreal value)
          : QPieSlice(label, value)
      {
          connect(this, SIGNAL(hovered(bool)), this, SLOT(showHighlight(bool)));
      }

      QBrush CustomSlice::originalBrush()
      {
          return m_originalBrush;
      }

      void CustomSlice::showHighlight(bool show)
      {
          if (show) {
              QBrush brush = this->brush();
              m_originalBrush = brush;
              brush.setColor(brush.color().lighter());
              setBrush(brush);
          } else {
              setBrush(m_originalBrush);
          }
      }

      #include "moc_customslice.cpp"