brushtool.cpp Example File

piechartcustomization/brushtool.cpp
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 ** This file is part of the Qt Charts module of the Qt Toolkit.
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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"