EthercatDemo/slavewidget.cpp at master · cjmin1233/EthercatDemo · GitHub

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#include "slavewidget.h"
#include "ui_slavewidget.h"

#include <QIcon>
#include <QLayout>
#include <QSize>

#include <QDebug>

const QString SlaveWidget::s_iconPaths[2] = {
    QStringLiteral(":/images/ledLow.png"),
    QStringLiteral(":/images/ledHigh.png")
};

static const QSize s_iconSize(20, 20);

SlaveWidget::SlaveWidget(int idx, int oBits, int iBits, QWidget* parent)
    : QWidget(parent)
    , ui(new Ui::SlaveWidget)
    , m_SlaveIdx(idx)
    , m_oBits(oBits)
    , m_iBits(iBits)
    , m_outputGroup(new QButtonGroup(this))
    , m_inputGroup(new QButtonGroup(this))
{
    ui->setupUi(this);

    ui->labelSlave->setText(QString("Slave %1").arg(m_SlaveIdx));

    // non-exclusive
    m_outputGroup->setExclusive(false);
    m_inputGroup->setExclusive(false);

    // connect signals
    connect(m_outputGroup, &QButtonGroup::idToggled,
            this, &SlaveWidget::onOutputToggled);

    refresh();
}

SlaveWidget::~SlaveWidget()
{
    delete ui;
}

// refresh all buttons
void SlaveWidget::refresh()
{
    refreshOutput();
    refreshInput();
}

// refresh output buttons
void SlaveWidget::refreshOutput()
{
    QHBoxLayout* layoutOutput = qobject_cast<QHBoxLayout*>(ui->widgetOutput->layout());
    if (layoutOutput == nullptr) {
        layoutOutput = new QHBoxLayout(ui->widgetOutput);
        ui->widgetOutput->setLayout(layoutOutput);

        layoutOutput->setSpacing(0);
    }

    // clear existing btns
    const auto buttons = m_outputGroup->buttons();
    for (QAbstractButton* b : buttons) {
        if (layoutOutput) {
            layoutOutput->removeWidget(b);
        }

        b->deleteLater();
        m_outputGroup->removeButton(b);
    }

    // create btns
    for (int i = 0; i < m_oBits; ++i) {
        auto* btn = new QToolButton(this);
        btn->setAutoRaise(false);
        btn->setToolButtonStyle(Qt::ToolButtonTextUnderIcon);
        btn->setIcon(QIcon(s_iconPaths[0]));
        btn->setIconSize(s_iconSize);
        btn->setText(QString::number(i));
        btn->setCheckable(true);

        m_outputGroup->addButton(btn, i);

        if (layoutOutput) {
            layoutOutput->addWidget(btn);
        }
    }
}

// refresh input buttons
void SlaveWidget::refreshInput()
{
    QHBoxLayout* layoutInput = qobject_cast<QHBoxLayout*>(ui->widgetInput->layout());
    if (layoutInput == nullptr) {
        layoutInput = new QHBoxLayout(ui->widgetInput);
        ui->widgetInput->setLayout(layoutInput);

        layoutInput->setSpacing(0);
    }

    // clear existing btns
    const auto buttons = m_inputGroup->buttons();
    for (QAbstractButton* b : buttons) {
        if (layoutInput) {
            layoutInput->removeWidget(b);
        }
        b->deleteLater();
        m_inputGroup->removeButton(b);
    }

    // create btns
    for (int i = 0; i < m_iBits; ++i) {
        auto* btn = new QToolButton(this);
        btn->setAutoRaise(false);
        btn->setToolButtonStyle(Qt::ToolButtonTextUnderIcon);
        btn->setIcon(QIcon(s_iconPaths[0]));
        btn->setIconSize(s_iconSize);
        btn->setText(QString::number(i));

        m_inputGroup->addButton(btn, i);

        if (layoutInput) {
            layoutInput->addWidget(btn);
        }
    }
}

// refresh input bits for given byte
void SlaveWidget::refreshInput(int byteOffset, uint8_t value)
{
    const int byteBits = 8;
    for (int i = 0; i < byteBits; ++i) {
        int idx = byteBits * byteOffset + i;
        if (idx < 0 || idx >= m_iBits) {
            continue;
        }

        // get bit value
        const int bit = (value >> i) & 0x1;

        // set icon
        if (QAbstractButton* ab = m_inputGroup->button(idx)) {
            if (auto* btn = qobject_cast<QToolButton*>(ab)) {
                btn->setIcon(QIcon(s_iconPaths[bit]));
            }
        }
    }
}

// toggle output bit
void SlaveWidget::onOutputToggled(int id, bool checked)
{
    // set icon
    if (auto* ab = m_outputGroup->button(id)) {
        if (auto* btn = qobject_cast<QToolButton*>(ab)) {
            btn->setIcon(QIcon(s_iconPaths[checked ? 1 : 0]));
        }
    }

    emit outputChanged(m_SlaveIdx, id, checked);
}