Qt自定义精美的仪表盘控件（汽车仪表指南针雷达摇杆）

Posted 2022-11-26 何以问天涯

一、网速测速仪表盘

#include "Frm_GaugeSpeed.h"
#include <QTimer>
#include <QPainter>
#include <QtMath>
#include <QDebug>

//QString qss1 = QString("QLabelbackground-color:rgb(0,0,0);color:rgb(%1);").arg("100,184,255");
//QString qss2 = QString("QLabelbackground-color:rgb(0,0,0);color:rgb(%1);").arg("255,107,107");
//QString qss3 = QString("QLabelbackground-color:rgb(0,0,0);color:rgb(%1);").arg("24,189,155");


//===================================================================================
// 函数名称 | Frm_GaugeSpeed()
//-----------------------------------------------------------------------------------
// 函数输入 |
//-----------------------------------------------------------------------------------
// 函数功能 |构造函数
//-----------------------------------------------------------------------------------
// 返回值为 |
//-----------------------------------------------------------------------------------
// 函数作者 |xt
//===================================================================================
Frm_GaugeSpeed::Frm_GaugeSpeed(QWidget *parent) : QWidget(parent)

    m_timer = new QTimer(this);
    m_timer->setInterval(1000);
    m_timer->start();
    connect(m_timer, SIGNAL(timeout()), this, SLOT(slotAnimaValue()));

    if(this->m_isAnimation == true)
    
        QTimer::singleShot(50, this, SLOT(slotUpdateValue()));
    


//===================================================================================
// 函数名称 | ~Frm_GaugeSpeed()
//-----------------------------------------------------------------------------------
// 函数输入 |
//-----------------------------------------------------------------------------------
// 函数功能 |析构函数
//-----------------------------------------------------------------------------------
// 返回值为 |
//-----------------------------------------------------------------------------------
// 函数作者 |xt
//===================================================================================
Frm_GaugeSpeed::~Frm_GaugeSpeed()





//===================================================================================
// 函数名称 | drawScale()
//-----------------------------------------------------------------------------------
// 函数输入 |painter画家
//-----------------------------------------------------------------------------------
// 函数功能 | 绘制刻度线
//-----------------------------------------------------------------------------------
// 返回值为 |
//-----------------------------------------------------------------------------------
// 函数作者 |xt
//===================================================================================
void Frm_GaugeSpeed::drawScale(QPainter *painter)

    int radius = 94;
    painter->save();

    QPen pen;
    pen.setCapStyle(Qt::RoundCap);

    painter->rotate(m_IntSartAngle);
    int steps = (m_IntScaleMajor * m_IntScaleMinor);
    double angleStep = (360.0 - m_IntSartAngle - m_IntEndAngle) / steps;

    //计算圆环对应大刻度范围索引
    int indexStart = steps * (double)m_IntRingStartPercent / 100 + 1;
    int indexMid = steps * (double)m_IntRingMidPercent / 100 - 1;
    int indexEnd = steps * (double)m_IntRingEndPercent / 100 + 1;
    int index = 0;

    for (int i = 0; i <= steps; i++)
    
        if (i % m_IntScaleMinor == 0)
        
            //根据所在圆环范围切换颜色
            if (index < indexStart) 
                pen.setColor(m_ColorRingStart);
             else if (index < (indexStart + indexMid)) 
                pen.setColor(m_ColorRingMid);
             else if (index < (indexStart + indexMid + indexEnd)) 
                pen.setColor(m_ColorRingEnd);
            

            index++;

            pen.setWidthF(1.5);
            painter->setPen(pen);
            painter->drawLine(0, radius - 13, 0, radius);
         else 
            pen.setWidthF(0.5);
            pen.setColor(QColor(0,255,255));
            painter->setPen(pen);
            painter->drawLine(0, radius - 5, 0, radius);
        

        painter->rotate(angleStep);
    

    painter->restore();



//===================================================================================
// 函数名称 | drawPointer()
//-----------------------------------------------------------------------------------
// 函数输入 |painter画家
//-----------------------------------------------------------------------------------
// 函数功能 | 绘制指针
//-----------------------------------------------------------------------------------
// 返回值为 |
//-----------------------------------------------------------------------------------
// 函数作者 |xt
//===================================================================================
void Frm_GaugeSpeed::drawPointer(QPainter *painter)

    int radius = 62;
    painter->save();
    painter->setPen(Qt::NoPen);
    painter->setBrush(m_pointerColor);

    QPolygon pts;
    pts.setPoints(4, -5, 0, 0, -8, 5, 0, 0, radius);

    painter->rotate(m_IntSartAngle);
    double degRotate = (360.0 - m_IntSartAngle - m_IntEndAngle) / (m_dMaxValue - m_dMinValue) * (m_dCurrentValue - m_dMinValue);
    painter->rotate(degRotate);
    painter->drawConvexPolygon(pts);

    painter->restore();





double Frm_GaugeSpeed::getMinValue() const

    return this->m_dMinValue;


double Frm_GaugeSpeed::getMaxValue() const

    return this->m_dMaxValue;


double Frm_GaugeSpeed::getValue() const

    return this->m_dCurrentValue;


int Frm_GaugeSpeed::getPrecision() const

    return this->m_IntPreciBit;


int Frm_GaugeSpeed::getScaleMajor() const

    return this->m_IntScaleMajor;


int Frm_GaugeSpeed::getScaleMinor() const

    return this->m_IntScaleMinor;



int Frm_GaugeSpeed::getStartAngle() const

    return this->m_IntSartAngle;


int Frm_GaugeSpeed::getEndAngle() const

    return this->m_IntEndAngle;


bool Frm_GaugeSpeed::getAnimation() const

    return this->m_isAnimation;


double Frm_GaugeSpeed::getAnimationStep() const

    return this->m_dAnimationStep;


int Frm_GaugeSpeed::getRingWidth() const

    return  this->m_IntRingWidth;


int Frm_GaugeSpeed::getRingStartPercent() const

    return this->m_IntRingStartPercent;


int Frm_GaugeSpeed::getRingMidPercent() const

    return this->m_IntRingMidPercent;


int Frm_GaugeSpeed::getRingEndPercent() const

    return  this->m_IntRingEndPercent;


QColor Frm_GaugeSpeed::getRingColorStart() const

    return this->m_ColorRingStart;


QColor Frm_GaugeSpeed::getRingColorMid() const

    return this->m_ColorRingMid;


QColor Frm_GaugeSpeed::getRingColorEnd() const

    return this->m_ColorRingEnd;


QColor Frm_GaugeSpeed::getPointerColor() const

    return this->m_pointerColor;


QColor Frm_GaugeSpeed::getTextColor() const

    return this->m_textColor;


QSize Frm_GaugeSpeed::sizeHint() const

    int width = this->width();
    int height = this->height();
    return QSize(qMin(width, height), qMin(width, height));


QSize Frm_GaugeSpeed::minimumSizeHint() const

    int width = this->width();
    int height = this->height();
    return QSize(qMin(width, height), qMin(width, height));




void Frm_GaugeSpeed::setRange(double minValue, double maxValue)

    this->m_dMinValue = minValue;
    this->m_dMaxValue = maxValue;



void Frm_GaugeSpeed::setRange(int minValue, int maxValue)

    this->m_dMinValue = minValue;
    this->m_dMaxValue = maxValue;




void Frm_GaugeSpeed::setValue(double value)

    this->m_dTargetValue = value;
    if(this->m_isAnimation == true)
    
        QTimer::singleShot(5, this, SLOT(slotUpdateValue()));
    
    else 
        this->m_dCurrentValue = this->m_dTargetValue;
    
    update();



void Frm_GaugeSpeed::setValue(int value)

    this->m_dTargetValue =value;
    if(this->m_isAnimation == true)
    
        QTimer::singleShot(5, this, SLOT(slotUpdateValue()));
    
    else 
        this->m_dCurrentValue = this->m_dTargetValue;
    
    update();


void Frm_GaugeSpeed::setValue(QString &value)

    this->m_dTargetValue = value.toDouble();
    if(this->m_isAnimation == true)
    
        QTimer::singleShot(5, this, SLOT(slotUpdateValue()));
    
    else 
        this->m_dCurrentValue = this->m_dTargetValue;
    
    update();



void Frm_GaugeSpeed::setAnimation(bool animation)

    this->m_isAnimation = animation;
    if(this->m_isAnimation == true)
    
        QTimer::singleShot(5, this, SLOT(slotUpdateValue()));
    






void Frm_GaugeSpeed::slotUpdateValue()

    if(this->m_isAnimation == true)
    
        if(fabs(m_dCurrentValue - m_dTargetValue) > 0.001)
        
            if(m_dCurrentValue - m_dTargetValue > 0.001)
                m_dCurrentValue = m_dCurrentValue - m_dAnimationStep;
            else 
                m_dCurrentValue = m_dCurrentValue + m_dAnimationStep;
            
            QTimer::singleShot(5, this, SLOT(slotUpdateValue()));
            update();
        
    





//===================================================================================
// 函数名称 | slotAnimaValue()
//-----------------------------------------------------------------------------------
// 函数输入 |
//-----------------------------------------------------------------------------------
// 函数功能 | 模拟计数
//-----------------------------------------------------------------------------------
// 返回值为 |
//-----------------------------------------------------------------------------------
// 函数作者 |xt
//===================================================================================
void Frm_GaugeSpeed::slotAnimaValue()

    setValue(m_dCurrentValue+m_dAnimationStep);

二、汽车仪表盘

#include "Frm_Dashboard.h"
#include <QTimer>
#include <QPainter>
#include <QtMath>
#include <QDebug>



//===================================================================================
// 函数名称 | Frm_Dashboard()
//-----------------------------------------------------------------------------------
// 函数输入 |
//-----------------------------------------------------------------------------------
// 函数功能 |构造函数
//-----------------------------------------------------------------------------------
// 返回值为 |
//-----------------------------------------------------------------------------------
// 函数作者 |xt
//===================================================================================
Frm_Dashboard::Frm_Dashboard(QWidget *parent) : QWidget(parent)

    m_timer = new QTimer(this);
    m_timer->setInterval(1000);
    m_timer->start();
    connect(m_timer, SIGNAL(timeout()), this, SLOT(slotAnimaValue()));

    if(this->m_isAnimation == true)
    
        QTimer::singleShot(50, this, SLOT(slotUpdateValue()));
    


//===================================================================================
// 函数名称 | ~Frm_Dashboard()
//-----------------------------------------------------------------------------------
// 函数输入 |
//-----------------------------------------------------------------------------------
// 函数功能 |析构函数
//-----------------------------------------------------------------------------------
// 返回值为 |
//-----------------------------------------------------------------------------------
// 函数作者 |xt
//===================================================================================
Frm_Dashboard::~Frm_Dashboard()




double Frm_Dashboard::getMinValue() const

    return this->m_dMinValue;


double Frm_Dashboard::getMaxValue() const

    return this->m_dMaxValue;


double Frm_Dashboard::getValue() const

    return this->m_dCurrentValueQt编写自定义控件插件开放动态库dll使用（永久免费）

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