bitratebox.cpp Example File

can/bitratebox.cpp
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#include "bitratebox.h" #include <QLineEdit> BitRateBox::BitRateBox(QWidget *parent) : QComboBox(parent), m_customSpeedValidator(new QIntValidator(0, 1000000, this)) { fillBitRates(); connect(this, QOverload<int>::of(&QComboBox::currentIndexChanged), this, &BitRateBox::checkCustomSpeedPolicy); } BitRateBox::~BitRateBox() { delete m_customSpeedValidator; } int BitRateBox::bitRate() const { if (currentIndex() == (count() - 1)) return currentText().toInt(); return itemData(currentIndex()).toInt(); } bool BitRateBox::isFlexibleDataRateEnabled() const { return m_isFlexibleDataRateEnabled; } void BitRateBox::setFlexibleDateRateEnabled(bool enabled) { m_isFlexibleDataRateEnabled = enabled; m_customSpeedValidator->setTop(enabled ? 10000000 : 1000000); fillBitRates(); } void BitRateBox::checkCustomSpeedPolicy(int idx) { const bool isCustomSpeed = !itemData(idx).isValid(); setEditable(isCustomSpeed); if (isCustomSpeed) { clearEditText(); lineEdit()->setValidator(m_customSpeedValidator); } } void BitRateBox::fillBitRates() { const QList<int> rates = { 10000, 20000, 50000, 100000, 125000, 250000, 500000, 800000, 1000000 }; const QList<int> dataRates = { 2000000, 4000000, 8000000 }; clear(); for (int rate : rates) addItem(QString::number(rate), rate); if (isFlexibleDataRateEnabled()) { for (int rate : dataRates) addItem(QString::number(rate), rate); } addItem(tr("Custom")); setCurrentIndex(6); // default is 500000 bits/sec }