pentool.cpp Example File

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#include "pentool.h" #include <QtWidgets/QPushButton> #include <QtWidgets/QDoubleSpinBox> #include <QtWidgets/QComboBox> #include <QtWidgets/QFormLayout> #include <QtWidgets/QColorDialog> PenTool::PenTool(QString title, QWidget *parent) : QWidget(parent) { setWindowTitle(title); setWindowFlags(Qt::Tool); m_colorButton = new QPushButton(); m_widthSpinBox = new QDoubleSpinBox(); m_styleCombo = new QComboBox(); m_styleCombo->addItem("NoPen"); m_styleCombo->addItem("SolidLine"); m_styleCombo->addItem("DashLine"); m_styleCombo->addItem("DotLine"); m_styleCombo->addItem("DashDotLine"); m_styleCombo->addItem("DashDotDotLine"); m_capStyleCombo = new QComboBox(); m_capStyleCombo->addItem("FlatCap", Qt::FlatCap); m_capStyleCombo->addItem("SquareCap", Qt::SquareCap); m_capStyleCombo->addItem("RoundCap", Qt::RoundCap); m_joinStyleCombo = new QComboBox(); m_joinStyleCombo->addItem("MiterJoin", Qt::MiterJoin); m_joinStyleCombo->addItem("BevelJoin", Qt::BevelJoin); m_joinStyleCombo->addItem("RoundJoin", Qt::RoundJoin); m_joinStyleCombo->addItem("SvgMiterJoin", Qt::SvgMiterJoin); QFormLayout *layout = new QFormLayout(); layout->addRow("Color", m_colorButton); layout->addRow("Width", m_widthSpinBox); layout->addRow("Style", m_styleCombo); layout->addRow("Cap style", m_capStyleCombo); layout->addRow("Join style", m_joinStyleCombo); setLayout(layout); // Use old style connect on some signals because the signal is overloaded connect(m_colorButton, &QPushButton::clicked, this, &PenTool::showColorDialog); connect(m_widthSpinBox, static_cast<void (QDoubleSpinBox::*)(double)>(&QDoubleSpinBox::valueChanged), this, &PenTool::updateWidth); connect(m_styleCombo, static_cast<void (QComboBox::*)(int)>(&QComboBox::currentIndexChanged), this, &PenTool::updateStyle); connect(m_capStyleCombo, static_cast<void (QComboBox::*)(int)>(&QComboBox::currentIndexChanged), this, &PenTool::updateCapStyle); connect(m_joinStyleCombo, static_cast<void (QComboBox::*)(int)>(&QComboBox::currentIndexChanged), this, &PenTool::updateJoinStyle); } void PenTool::setPen(const QPen &pen) { m_pen = pen; m_colorButton->setText(m_pen.color().name()); m_widthSpinBox->setValue(m_pen.widthF()); m_styleCombo->setCurrentIndex(; // index matches the enum m_capStyleCombo->setCurrentIndex(m_capStyleCombo->findData(m_pen.capStyle())); m_joinStyleCombo->setCurrentIndex(m_joinStyleCombo->findData(m_pen.joinStyle())); } QPen PenTool::pen() const { return m_pen; } QString PenTool::name() { return name(m_pen); } QString PenTool::name(const QPen &pen) { return pen.color().name() + ":" + QString::number(pen.widthF()); } void PenTool::showColorDialog() { QColorDialog dialog(m_pen.color());; dialog.exec(); m_pen.setColor(dialog.selectedColor()); m_colorButton->setText(m_pen.color().name()); emit changed(); } void PenTool::updateWidth(double width) { if (!qFuzzyCompare((qreal) width, m_pen.widthF())) { m_pen.setWidthF(width); emit changed(); } } void PenTool::updateStyle(int style) { if ( != style) { m_pen.setStyle((Qt::PenStyle) style); emit changed(); } } void PenTool::updateCapStyle(int index) { Qt::PenCapStyle capStyle = (Qt::PenCapStyle) m_capStyleCombo->itemData(index).toInt(); if (m_pen.capStyle() != capStyle) { m_pen.setCapStyle(capStyle); emit changed(); } } void PenTool::updateJoinStyle(int index) { Qt::PenJoinStyle joinStyle = (Qt::PenJoinStyle) m_joinStyleCombo->itemData(index).toInt(); if (m_pen.joinStyle() != joinStyle) { m_pen.setJoinStyle(joinStyle); emit changed(); } } #include "moc_pentool.cpp"

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