Qlabel定时器和动画 实现数字变化

#include "qautonumlabel.h"
#include<cctype>
QAutoNumLabel::QAutoNumLabel(QWidget *parent) :
    QLabel(parent)
{
    timer = new QTimer(this);
    connect(timer,SIGNAL(timeout()),this,SLOT(updateNum()));
    time = 1000;
    count = 0;
    maxcount = 50;
}

void QAutoNumLabel::setTime(int time){
    this->time = time;
    timer->start(time/maxcount);
}
void QAutoNumLabel::setCount(int c)
{
    maxcount = c;
}

void QAutoNumLabel::setNum(QString num){
    this->num = num.toDouble();
}

void QAutoNumLabel::updateNum(){
    setText(QString::number(count*num/maxcount));
    count++;
    if(count>maxcount){
        timer->stop();
        count = 0;
     }
}

还有一种简单的方式，通过QPropertyAnimation自定义setText属性，通过动画进行Qlabel数子变化，下面是简单的定义使用，在1s内将1变成200.比较简单

    Q_PROPERTY(int text READ text WRITE setText)//添加动画属性
    void setText(const int);
    int text()const;


    QPropertyAnimation *pAnimation = new QPropertyAnimation(this, "text");
    pAnimation->setDuration(1000);
    pAnimation->setKeyValueAt(0, 1);
    pAnimation->setKeyValueAt(0.5, 100);
    pAnimation->setKeyValueAt(1, 200);
    pAnimation->start(QAbstractAnimation::DeleteWhenStopped);