一、演示效果

二、关键程序

代码如下：

#include "QSimpleLed.h"#include <QGradient>
#include <QPainter>
#include <QDebug>QSimpleLed::ColorGroup QSimpleLed::smColorPalette[6] {// CUSTOM{ QColor(0, 0, 0), QColor(0, 0, 0), QColor(0, 0, 0), QColor(0, 0, 0) },// RED{ QColor(255, 0, 0), QColor(191, 0, 0), QColor(28, 0, 0), QColor(128, 0, 0) },// GREEN{ QColor(0, 255, 0), QColor(0, 191, 0), QColor(0, 28, 0), QColor(0, 128, 0) },// BLUE{ QColor(0, 0, 255), QColor(0, 0, 191), QColor(0, 0, 28), QColor(0, 0, 128) },// YELLOW{ QColor(255, 255, 0), QColor(191, 191, 0), QColor(28, 28, 0), QColor(128, 128, 0) },// ORANGE{ QColor(255, 165, 0), QColor(255, 113, 1), QColor(20, 8, 5), QColor(99, 39, 24) },
};QSimpleLed::QSimpleLed(QWidget *parent, QSimpleLed::LEDCOLOR color): QAbstractButton(parent), mColor(color)
{setCheckable(true);setMinimumSize(64, 64);
}void QSimpleLed::setColor(LEDCOLOR color)
{mColor = color;
}void QSimpleLed::setStates(QSimpleLed::LEDSTATES states)
{switch (states) {case ON:resetStatus();setChecked(true);mStates = ON;break;case OFF:resetStatus();break;case BLINK:resetStatus();if (!mBlinkTimer) {mBlinkTimer = new QTimer(this);connect(mBlinkTimer, &QTimer::timeout, this, &QSimpleLed::onBlinkTimerTimeout);}mBlinkTimer->setInterval(mInterval);mBlinkTimer->start();mStates = BLINK;break;default:qDebug() << "LED - unknown states!!!";}update();
}void QSimpleLed::paintEvent(QPaintEvent *event)
{Q_UNUSED(event);qreal realSize = qMin(width(), height());QRadialGradient radialGent;//// gradient - 1radialGent = QRadialGradient(QPointF(-500, -500), 1500, QPointF(-500, -500));radialGent.setColorAt(0, QColor(224, 224, 224));radialGent.setColorAt(1, QColor(28, 28, 28));QPainter painter(this);painter.setRenderHint(QPainter::Antialiasing);      // 反锯齿painter.translate(width()/2, height()/2);           // 绘点移到控件中心处painter.scale(realSize/1000, realSize/1000);painter.setBrush(QBrush(radialGent));painter.drawEllipse(QPointF(0, 0), 500, 500);//// gradient - 2radialGent = QRadialGradient(QPointF(500, 500), 1500, QPointF(500, 500));radialGent.setColorAt(0, QColor(224, 224, 224));radialGent.setColorAt(1, QColor(28, 28, 28));painter.setBrush(QBrush(radialGent));painter.drawEllipse(QPointF(0, 0), 450, 450);if (isChecked()) {//// gradient - 3radialGent = QRadialGradient(QPointF(-500, -500), 1500, QPointF(-500, -500));radialGent.setColorAt(0, smColorPalette[mColor].on0);radialGent.setColorAt(1, smColorPalette[mColor].on1);} else {//// gradient - 4radialGent = QRadialGradient(QPointF(500, 500), 1500, QPointF(500, 500));radialGent.setColorAt(0, smColorPalette[mColor].off0);radialGent.setColorAt(1, smColorPalette[mColor].off1);}painter.setBrush(QBrush(radialGent));painter.drawEllipse(QPoint(0, 0), 400, 400);
//    float test2 = realSize*0.5;
//    float test15 = realSize*1.5;
//    float test45 = realSize*0.45;
//    float test4 = realSize*0.4;//    //
//    // gradient - 1
//    radialGent = QRadialGradient(QPointF(-test2, -test2)
//                                 , test15
//                                 , QPointF(-test2, -test2));
//    radialGent.setColorAt(0, QColor(224, 224, 224));
//    radialGent.setColorAt(1, QColor(28, 28, 28));//    QPainter painter(this);//    painter.setRenderHint(QPainter::Antialiasing);      // 反锯齿
//    painter.translate(width()/2, height()/2);           // 绘点移到控件中心处
    painter.scale(realSize/1000, realSize/1000);
//    painter.setPen(Qt::NoPen);
//    painter.setBrush(QBrush(radialGent));
//    painter.drawEllipse(QPointF(0, 0), test2, test2);//    //
//    // gradient - 2
//    radialGent = QRadialGradient(QPointF(test2, test2)
//                                 , test15
//                                 , QPointF(test2, test2));
//    radialGent.setColorAt(0, QColor(224, 224, 224));
//    radialGent.setColorAt(1, QColor(28, 28, 28));//    painter.setBrush(QBrush(radialGent));
//    painter.drawEllipse(QPointF(0, 0), test45, test45);//    if (isChecked()) {//        //
//        // gradient - 3
//        radialGent = QRadialGradient(QPointF(-test2, -test2)
//                                     , test15
//                                     , QPointF(-test2, -test2));
//        radialGent.setColorAt(0, mOnColor1);
//        radialGent.setColorAt(1, mOnColor2);//    } else {//        //
//        // gradient - 4
//        radialGent = QRadialGradient(QPointF(test2, test2)
//                                     , test15
//                                     , QPointF(test2, test2));
//        radialGent.setColorAt(0, mOffColor1);
//        radialGent.setColorAt(1, mOffColor2);
//    }//    painter.setBrush(QBrush(radialGent));
//    painter.drawEllipse(QPointF(0, 0), test4, test4);
}void QSimpleLed::resizeEvent(QResizeEvent *event)
{Q_UNUSED(event);update();
}void QSimpleLed::mousePressEvent(QMouseEvent *event)
{Q_UNUSED(event);
}void QSimpleLed::onBlinkTimerTimeout()
{setChecked(!isChecked());
}void QSimpleLed::resetStatus()
{if (mBlinkTimer && mBlinkTimer->isActive()) {mBlinkTimer->stop();}setChecked(false);mStates = OFF;
}

三、程序链接

程序链接
https://download.csdn.net/download/u013083044/85523239

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QT-三色灯状态灯IO状态

QT-三色灯状态灯IO状态

一、演示效果

二、关键程序

三、程序链接

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