qt/LedOK/LoUIClass/customprogressindicator.cpp

#include "customprogressindicator.h"
#include <QPainter>
#include <QPainterPath>

CustomProgressIndicator::CustomProgressIndicator(QWidget* parent)
    : QWidget(parent),
      angle_(0),
      timerId_(-1),
      delay_(20),
      displayedWhenStopped_(false),
      color_(Qt::green) {
    setAttribute(Qt::WA_DeleteOnClose);
    setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed);
    setFocusPolicy(Qt::NoFocus);
    setWindowFlags(Qt::FramelessWindowHint);//无窗体
    setAttribute(Qt::WA_TranslucentBackground);//背景透明
}

bool CustomProgressIndicator::isAnimated () const {
    return (timerId_ != -1);
}

void CustomProgressIndicator::setDisplayedWhenStopped(bool state) {
    displayedWhenStopped_ = state;

    update();
}

bool CustomProgressIndicator::isDisplayedWhenStopped() const {
    return displayedWhenStopped_;
}
void CustomProgressIndicator::setDisplayModel(int iFlag)
{
    m_iLoopBackFlag=iFlag;
}
void CustomProgressIndicator::startAnimation() {
    angle_ = 0;

    if (timerId_ == -1) {
       timerId_ = startTimer(delay_);
    }
}
void CustomProgressIndicator::setDisplayStringInfo(QString strTip,QString strTiping) {
    m_strTip=strTip;
    m_strTiping=strTiping;
    update();
}
void CustomProgressIndicator::stopAnimation() {
    if (timerId_ != -1) {
        killTimer(timerId_);
    }

    timerId_ = -1;

    update();
}

void CustomProgressIndicator::setAnimationDelay(int delay) {
    if (timerId_ != -1){
        killTimer(timerId_);
    }

    delay_ = delay;

    if (timerId_ != -1){
        timerId_ = startTimer(delay_);
    }
}

void CustomProgressIndicator::setColor(const QColor & color) {
    color_ = color;

    update();
}

QSize CustomProgressIndicator::sizeHint() const {
    return QSize(80,80);
}


void CustomProgressIndicator::timerEvent(QTimerEvent * /*event*/) {
    angle_ = (angle_+30)%360;

    update();
}

void CustomProgressIndicator::paintEvent(QPaintEvent * /*event*/) {
    QPainter p(this);

//    if(m_iFlagFinishedSuccess==1)
//    {
 //       drawUnderCircle(&p);
 //   }
 //   else
    {
        drawJuHua(&p);
    }


}
void CustomProgressIndicator::drawJuHua(QPainter *painter)
{
    painter->setRenderHint(QPainter::Antialiasing);
    if (displayedWhenStopped_ && !isAnimated()) //如果displayedWhenStopped_==flash并且动画已经停止则不绘制
    {
        painter->setPen(color_);
        painter->drawPixmap(rect(),currentPix_);
        painter->drawText(rect(), Qt::AlignCenter, m_strTip);

        return;
    }

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


    int outerRadius = (width-1) >> 1;
    int innerRadius = int(((width-1) >> 1)*0.38);

    int capsuleHeight = outerRadius - innerRadius;
    int capsuleWidth  = (width > 32 ) ? (int)(capsuleHeight *0.23) : (int)(capsuleHeight *0.35);
    int capsuleRadius = capsuleWidth >> 1;
    if(m_iLoopBackFlag==1)
    {
        painter->setPen(color_);
        painter->drawText(rect(), Qt::AlignCenter, m_strTiping);

    }
    else {
        /* 撰写进度 */
        if (progress_ > 0 && progress_ < 100) {
            painter->setPen(color_);
            painter->drawText(rect(), Qt::AlignCenter, QString("%1%").arg(progress_));
        }
        else if (progress_ == 100) {
            stopAnimation();
        }
    }

    for (int i=0; i<12; ++i) {
        QColor color = color_;
        color.setAlphaF(1.0f - (i/12.0f));
        painter->setPen(Qt::NoPen);
        painter->setBrush(color);
        painter->save();
        painter->translate(rect().center());
        painter->rotate(angle_ - i*30.0f);
        painter->drawRoundedRect(((-capsuleWidth) >> 1), -(innerRadius+capsuleHeight), capsuleWidth, capsuleHeight, capsuleRadius, capsuleRadius);
        painter->restore();
    }

}
//没有使用的画圆环函数
void CustomProgressIndicator::drawUnderCircle(QPainter *painter)
{
        int bigradius = 50;
        painter->save();
        painter->setPen(color_);
        painter->setBrush(color_);

        QPainterPath bigCircle;
        bigCircle.addEllipse(-width()/2, -height()/2, bigradius*2, bigradius*2);

        int smallradius = 40;
        QPainterPath smallCircle;
        smallCircle.addEllipse(-width()/2, -height()/2, smallradius*2, smallradius*2);

        QPainterPath path = bigCircle - smallCircle;
        painter->drawPath(path);
        painter->setPen(color_);
        painter->drawText(rect(), Qt::AlignCenter, m_strTip);
        painter->restore();

      /*   painter->save();
         painter->setPen(color_);
         painter->setBrush(color_);
         int m_outerRadius=width()>height()?(qreal)height()/2-4:(qreal)width()/2-4;//求最小的那个值。自己可以测试一下减4个像素与不减的区别
         QPointF TopLeft(rect().center().x() - m_outerRadius,rect().center().y() - m_outerRadius);
         QPointF BottomRight(rect().center().x() + m_outerRadius,rect().center().y() + m_outerRadius);
         QRectF CircleRect(TopLeft,BottomRight);//大圆矩形

         //painter->setPen(Qt::NoPen);//大家可以注释掉这行看一下，有什么差别？
         painter->drawEllipse(CircleRect);//画椭圆，其实就是画圆。特殊椭圆而已
         painter->setPen(Qt::white);
         painter->drawText(rect(), Qt::AlignCenter, m_strTip);
         painter->restore();*/
}