brushtool.cpp Example File | Qt Charts 5.12.11

- Qt 5.12
- Qt Charts
- Pie Chart Customization Example
- brushtool.cpp Example File
- Qt Charts | Commercial or GPLv3

# brushtool.cpp Example File

piechartcustomization/brushtool.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.
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     ****************************************************************************/
     #include "brushtool.h"
     #include <QtWidgets/QPushButton>
     #include <QtWidgets/QFormLayout>
     #include <QtWidgets/QComboBox>
     #include <QtWidgets/QColorDialog>

     BrushTool::BrushTool(QString title, QWidget *parent)
         : QWidget(parent)
     {
         setWindowTitle(title);
         setWindowFlags(Qt::Tool);

         m_colorButton = new QPushButton();
         m_styleCombo = new QComboBox();
         m_styleCombo->addItem("Nobrush", (int) Qt::NoBrush);
         m_styleCombo->addItem("Solidpattern", (int) Qt::SolidPattern);
         m_styleCombo->addItem("Dense1pattern", (int) Qt::Dense1Pattern);
         m_styleCombo->addItem("Dense2attern", (int) Qt::Dense2Pattern);
         m_styleCombo->addItem("Dense3Pattern", (int) Qt::Dense3Pattern);
         m_styleCombo->addItem("Dense4Pattern", (int) Qt::Dense4Pattern);
         m_styleCombo->addItem("Dense5Pattern", (int) Qt::Dense5Pattern);
         m_styleCombo->addItem("Dense6Pattern", (int) Qt::Dense6Pattern);
         m_styleCombo->addItem("Dense7Pattern", (int) Qt::Dense7Pattern);
         m_styleCombo->addItem("HorPattern", (int) Qt::HorPattern);
         m_styleCombo->addItem("VerPattern", (int) Qt::VerPattern);
         m_styleCombo->addItem("CrossPattern", (int) Qt::CrossPattern);
         m_styleCombo->addItem("BDiagPattern", (int) Qt::BDiagPattern);
         m_styleCombo->addItem("FDiagPattern", (int) Qt::FDiagPattern);
         m_styleCombo->addItem("DiagCrossPattern", (int) Qt::DiagCrossPattern);

         QFormLayout *layout = new QFormLayout();
         layout->addRow("Color", m_colorButton);
         layout->addRow("Style", m_styleCombo);
         setLayout(layout);

         connect(m_colorButton, &QPushButton::clicked, this, &BrushTool::showColorDialog);
         connect(m_styleCombo, static_cast<void (QComboBox::*)(int)>(&QComboBox::currentIndexChanged),
                 this, &BrushTool::updateStyle);
     }

     void BrushTool::setBrush(QBrush brush)
     {
         m_brush = brush;
         m_colorButton->setText(m_brush.color().name());
         m_styleCombo->setCurrentIndex(m_brush.style()); // index matches the enum
     }

     QBrush BrushTool::brush() const
     {
         return m_brush;
     }

     QString BrushTool::name()
     {
         return name(m_brush);
     }

     QString BrushTool::name(const QBrush &brush)
     {
         return brush.color().name();
     }

     void BrushTool::showColorDialog()
     {
         QColorDialog dialog(m_brush.color());
         dialog.show();
         dialog.exec();
         m_brush.setColor(dialog.selectedColor());
         m_colorButton->setText(m_brush.color().name());
         emit changed();
     }

     void BrushTool::updateStyle()
     {
         Qt::BrushStyle style = (Qt::BrushStyle) m_styleCombo->itemData(m_styleCombo->currentIndex()).toInt();
         if (m_brush.style() != style) {
             m_brush.setStyle(style);
             emit changed();
         }
     }

     #include "moc_brushtool.cpp"