HMI-20-[刷新问题]解决界面刷新卡顿问题
【摘要】
基于Qt的汽车仪表模拟
先描述现象，就是我的这两个表转速表和速度表，他们按照正常的是同时开始转，完了再同时回到起点，但是呢，我在其他的电脑上实验的时候，发现会有不同步显现，特别明显。
所以，我担心是我的频繁刷新导致的，因为我的刷新频率太高了
每个表里面有两个定时器，定时10毫秒，每个定时器对应的操作里面都有upd...
基于Qt的汽车仪表模拟
先描述现象，就是我的这两个表转速表和速度表，他们按照正常的是同时开始转，完了再同时回到起点，但是呢，我在其他的电脑上实验的时候，发现会有不同步显现，特别明显。
所以，我担心是我的频繁刷新导致的，因为我的刷新频率太高了
每个表里面有两个定时器，定时10毫秒，每个定时器对应的操作里面都有updata这样等于我一个表每秒就要刷新100*100 次，两个表，同时刷新，那就是100*100*100*100 ，着个刷新频率可能真的是太高了，
剩下的呢，就是把原来的仪表的自检函数优化，增加线程，完美解决问题。但是目前的版本还是没有优化的版本，
看下修改后的代码吧，修改之前的改吗可以看前面的内容
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#ifndef TACHOMETER_H
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#define TACHOMETER_H
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#include <QWidget>
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#include <QPainter>
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#include <QPaintEvent>
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#include <QThread>
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class TachoThread : public QThread
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{
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Q_OBJECT
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public:
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/**
-
* @brief run
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* 重载线程函数
-
*/
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virtual void run();
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-
signals:
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void signal_selfInspection(int number);
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void signal_finished();
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private:
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int m_number = 0;
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bool flagDESC = false;
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};
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namespace Ui {
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class Tachometer;
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}
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class Tachometer : public QWidget
-
{
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Q_OBJECT
-
-
public:
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explicit Tachometer(QWidget *parent = 0);
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~Tachometer();
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/**
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* @brief selfInspection
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* 转速表自检程序
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*/
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void selfInspection();
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/**
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* @brief setTacho
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* @param tacho
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* 设置发动机转速0-8000 转速
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*/
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void setTacho(int tacho = 0);
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/**
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* @brief setTemperature
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* @param temperatur
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* 设置温度
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*/
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void setTemperature(int temperatur = 0);
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signals:
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/**
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* @brief signalSelfInspection
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* 自检完成信号
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*/
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void signalSelfInspectionfinished();
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private:
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/**
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* @brief eventFilter
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* @param watched
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* @param event
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* @return
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* 事件过滤器器
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*/
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bool eventFilter(QObject *watched, QEvent *event);
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/**
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* @brief drawPonter
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* @param angle
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* 绘制指针
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*/
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void drawPonter(int angle = -135);
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/**
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* @brief drawPonterShade
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* @param angle
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* 绘制指针阴影
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*/
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void drawPonterShade(int angle = -135);
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/**
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* @brief drawTemperature
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* @param temperature
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* 绘制温度表
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*/
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void drawTemperature(int temperature = 0);
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private slots:
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/**
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* @brief slot_tachoSelfInspection
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* @param number
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* 完成自检动画
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*/
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void slot_tachoSelfInspection(int number);
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public:
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int currentTacho = 0; //当前转速
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int currentTemperature = 0; //当前温度
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private:
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Ui::Tachometer *ui;
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int m_Angle = 0; //转速表角度
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int m_Temperature = 0;
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double m_shadeOpacity = 0.0; //指针阴影透明度
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TachoThread *m_tachoThread = NULL;
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};
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#endif // TACHOMETER_H
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#include "tachometer.h"
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#include "ui_tachometer.h"
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#include <QDebug>
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Tachometer::Tachometer(QWidget *parent) :QWidget(parent),ui(new Ui::Tachometer)
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{
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ui->setupUi(this);
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ui->label_mainback->setStyleSheet("QLabel{border-image:url(:/Comfort/Resources/MeterDisplay/Comfort/Tachometer/mainback.png);}");
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ui->label_flag_temperature->setStyleSheet("QLabel{border-image:url(:/Comfort/Resources/MeterDisplay/Comfort/Tachometer/temperature_r.png);}");
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ui->label_pointer->installEventFilter(this);
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ui->label_pointer_shade->installEventFilter(this);
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ui->label_pointer_temperature->installEventFilter(this);
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m_tachoThread = new TachoThread();
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connect(m_tachoThread,&TachoThread::signal_finished,this,[=](){m_tachoThread->terminate();});
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connect(m_tachoThread,&TachoThread::signal_selfInspection,this,&Tachometer::slot_tachoSelfInspection);
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setTacho();
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}
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Tachometer::~Tachometer()
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{
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delete ui;
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}
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void Tachometer::selfInspection()
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{
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if(m_tachoThread)
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{
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m_tachoThread->start();
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}
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}
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void Tachometer::setTacho(int tacho)
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{
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currentTacho = tacho;
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m_Angle = currentTacho*0.03375-135;
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update();
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}
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void Tachometer::setTemperature(int temperatur)
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{
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currentTemperature = temperatur;
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m_Temperature = temperatur;
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if(m_Temperature >75)
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{
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ui->label_flag_temperature->setStyleSheet("QLabel{border-image:url(:/Comfort/Resources/MeterDisplay/Comfort/Tachometer/temperature_r.png);}");
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}
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else
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{
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ui->label_flag_temperature->setStyleSheet("QLabel{border-image:url(:/Comfort/Resources/MeterDisplay/Comfort/Tachometer/temperature_w.png);}");
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}
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update();
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}
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bool Tachometer::eventFilter(QObject *watched, QEvent *event)
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{
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if(watched == ui->label_pointer && event->type() == QEvent::Paint)
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{
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drawPonter(m_Angle);
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}
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if(watched == ui->label_pointer_shade && event->type() == QEvent::Paint)
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{
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drawPonterShade(m_Angle);
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}
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if(watched == ui->label_pointer_temperature && event->type() == QEvent::Paint)
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{
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drawTemperature(m_Temperature);
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}
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return QWidget::eventFilter(watched,event);
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}
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void Tachometer::drawPonter(int angle)
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{
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m_shadeOpacity = currentTacho / 10000.0;
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QPainter painter(ui->label_pointer);
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painter.setRenderHint((QPainter::SmoothPixmapTransform));
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painter.setRenderHint(QPainter::HighQualityAntialiasing);
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painter.translate(304,303.5);
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painter.save();
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painter.rotate(angle);
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painter.drawPixmap(-304,-302,416,500,QPixmap(":/Comfort/Resources/MeterDisplay/Comfort/Tachometer/pointer.png"));
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painter.restore();
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}
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void Tachometer::drawPonterShade(int angle)
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{
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QPainter painter(ui->label_pointer_shade);
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painter.setOpacity(m_shadeOpacity);
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painter.setRenderHint((QPainter::SmoothPixmapTransform));
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painter.setRenderHint(QPainter::HighQualityAntialiasing);
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painter.translate(304,303.5);
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painter.save();
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painter.rotate(angle);
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painter.drawPixmap(-304,-302,416,500,QPixmap(":/Comfort/Resources/MeterDisplay/Comfort/Tachometer/pointer_shade.png"));
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painter.restore();
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}
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-
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void Tachometer::drawTemperature(int temperature)
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{
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QPainter painter(ui->label_pointer_temperature);
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painter.setRenderHint((QPainter::SmoothPixmapTransform));
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painter.setRenderHint(QPainter::HighQualityAntialiasing);
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painter.translate(304,303.5);
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painter.setPen(QPen(Qt::white,6,Qt::SolidLine));
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painter.save();
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if(temperature<=25)
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{
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painter.drawArc(-304,-308,608,608,247*16,temperature*7);
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}
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else if(temperature>25 && temperature <= 50)
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{
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painter.drawArc(-304,-308,608,608,247*16,24*7);
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painter.drawArc(-304,-308,608,608,259*16,(temperature-25)*7);
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}
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else if(temperature>50 && temperature <= 75)
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{
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painter.drawArc(-304,-308,608,608,247*16,24*7);
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painter.drawArc(-304,-308,608,608,259*16,24*7);
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painter.drawArc(-304,-308,608,608,271*16,(temperature-50)*7);
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}
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else if(temperature>75 && temperature <= 90)
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{
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painter.drawArc(-304,-308,608,608,247*16,24*7);
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painter.drawArc(-304,-308,608,608,259*16,24*7);
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painter.drawArc(-304,-308,608,608,271*16,24*7);
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painter.drawArc(-304,-308,608,608,283*16,(temperature-75)*7);
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}
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else if(temperature>90 && temperature <= 100)
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{
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painter.drawArc(-304,-308,608,608,247*16,24*7);
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painter.drawArc(-304,-308,608,608,259*16,24*7);
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painter.drawArc(-304,-308,608,608,271*16,24*7);
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painter.drawArc(-304,-308,608,608,283*16,15*7);
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painter.setPen(QPen(Qt::red,6,Qt::SolidLine));
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painter.drawArc(-304,-308,608,608,290*16,(temperature-90)*7);
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}
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painter.restore();
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}
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void Tachometer::slot_tachoSelfInspection(int number)
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{
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currentTacho = number*80;
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m_Angle = number*80*0.03375-135;
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setTemperature(number);
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}
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void TachoThread::run()
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{
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while (true)
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{
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emit signal_selfInspection(m_number);
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if(flagDESC)
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{
-
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if(m_number == 0)
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{
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emit signal_finished();
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flagDESC = !flagDESC;
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}
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m_number--;
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}
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else
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{
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m_number++;
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if(m_number == 100)
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{
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flagDESC = !flagDESC;
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}
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}
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msleep(10);
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}
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}
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#ifndef SPEEDMETER_H
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#define SPEEDMETER_H
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#include <QWidget>
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#include <QPainter>
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#include <QPaintEvent>
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#include <QThread>
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class SpeedThread : public QThread
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{
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Q_OBJECT
-
public:
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/**
-
* @brief run
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* 重载线程函数
-
*/
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virtual void run();
-
-
signals:
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void signal_selfInspection(int number);
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void signal_finished();
-
private:
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int m_number = 0;
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bool flagDESC = false;
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};
-
-
namespace Ui {
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class Speedmeter;
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}
-
-
class Speedmeter : public QWidget
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{
-
Q_OBJECT
-
-
public:
-
explicit Speedmeter(QWidget *parent = 0);
-
~Speedmeter();
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/**
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* @brief selfInspection
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* 转速表自检程序
-
*/
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void selfInspection();
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/**
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* @brief setCarSpeed
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* @param speed
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* 设置车速
-
*/
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void setCarSpeed(int speed = 0);
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/**
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* @brief setOilMass
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* @param mass
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* 设置油量
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*/
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void setOilMass(int mass = 0);
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signals:
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/**
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* @brief speedChange
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* @param speed
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* 速度改变信号
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*/
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void speedChange(int speed);
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/**
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* @brief signalSelfInspection
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* 自检完成信号
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*/
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void signalSelfInspectionfinished();
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private:
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/**
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* @brief eventFilter
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* @param watched
-
* @param event
-
* @return
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* 事件过滤器器
-
*/
-
bool eventFilter(QObject *watched, QEvent *event);
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/**
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* @brief drawPonter
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* @param angle
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* 绘制指针
-
*/
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void drawPonter(int angle = -135);
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/**
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* @brief drawPonterShade
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* @param angle
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* 绘制指针阴影
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*/
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void drawPonterShade(int angle = -135);
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/**
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* @brief drawOilMass
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* @param mess
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* 绘制油量表
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*/
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void drawOilMass(int mass = 0);
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private slots:
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/**
-
* @brief slot_tachoSelfInspection
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* @param number
-
* 完成自检动画
-
*/
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void slot_carSpeedSelfInspection(int number);
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public:
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int currentCarSpeed = 0; //当前车速
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int currentMass = 0; //当前油量
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private:
-
Ui::Speedmeter *ui;
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int m_Angle = 0; //速度角度
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double m_shadeOpacity = 0.0; //指针阴影透明度
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int m_OilMass = 0;
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SpeedThread *m_speedThread = NULL;
-
-
};
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-
#endif // SPEEDMETER_H
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#include "speedmeter.h"
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#include "ui_speedmeter.h"
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#include <QDebug>
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Speedmeter::Speedmeter(QWidget *parent) : QWidget(parent),ui(new Ui::Speedmeter)
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{
-
ui->setupUi(this);
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ui->label_mainback->setStyleSheet("QLabel{border-image:url(:/Comfort/Resources/MeterDisplay/Comfort/Speedmeter/mainback.png);}");
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ui->label_flag_oilmass->setStyleSheet("QLabel{border-image:url(:/Comfort/Resources/MeterDisplay/Comfort/Speedmeter/oilmass_o.png);}");
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ui->label_pointer->installEventFilter(this);
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ui->label_pointer_shade->installEventFilter(this);
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ui->label_oilmass->installEventFilter(this);
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m_speedThread = new SpeedThread();
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connect(m_speedThread,&SpeedThread::signal_finished,this,[=](){m_speedThread->terminate();});
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connect(m_speedThread,&SpeedThread::signal_selfInspection,this,&Speedmeter::slot_carSpeedSelfInspection);
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setCarSpeed();
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}
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Speedmeter::~Speedmeter()
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{
-
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delete ui;
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}
-
-
void Speedmeter::selfInspection()
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{
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if(m_speedThread)
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{
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m_speedThread->start();
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}
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}
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void Speedmeter::setCarSpeed(int speed)
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{
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currentCarSpeed = speed;
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emit speedChange(currentCarSpeed);
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m_Angle = currentCarSpeed*1.125-135;
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update();
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}
-
-
void Speedmeter::setOilMass(int mass)
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{
-
if(mass<=10)
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{
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ui->label_flag_oilmass->setStyleSheet("QLabel{border-image:url(:/Comfort/Resources/MeterDisplay/Comfort/Speedmeter/oilmass_o.png);}");
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}
-
else
-
{
-
ui->label_flag_oilmass->setStyleSheet("QLabel{border-image:url(:/Comfort/Resources/MeterDisplay/Comfort/Speedmeter/oilmass_w.png);}");
-
}
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m_OilMass = mass;
-
update();
-
}
-
-
bool Speedmeter::eventFilter(QObject *watched, QEvent *event)
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{
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if(watched == ui->label_pointer && event->type() == QEvent::Paint)
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{
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drawPonter(m_Angle);
-
}
-
if(watched == ui->label_pointer_shade && event->type() == QEvent::Paint)
-
{
-
drawPonterShade(m_Angle);
-
}
-
if(watched == ui->label_oilmass && event->type() == QEvent::Paint)
-
{
-
drawOilMass(m_OilMass);
-
}
-
return QWidget::eventFilter(watched,event);
-
}
-
-
void Speedmeter::drawPonter(int angle)
-
{
-
m_shadeOpacity = currentCarSpeed / 300.0;
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QPainter painter(ui->label_pointer);
-
painter.setRenderHint((QPainter::SmoothPixmapTransform));
-
painter.setRenderHint(QPainter::HighQualityAntialiasing);
-
painter.translate(305,303.5);
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painter.save();
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painter.rotate(angle);
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painter.drawPixmap(-304,-302,416,500,QPixmap(":/Comfort/Resources/MeterDisplay/Comfort/Speedmeter/pointer.png"));
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painter.restore();
-
}
-
-
void Speedmeter::drawPonterShade(int angle)
-
{
-
QPainter painter(ui->label_pointer_shade);
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painter.setOpacity(m_shadeOpacity);
-
painter.setRenderHint((QPainter::SmoothPixmapTransform));
-
painter.setRenderHint(QPainter::HighQualityAntialiasing);
-
painter.translate(305,303.5);
-
painter.save();
-
painter.rotate(angle);
-
painter.drawPixmap(-304,-302,416,500,QPixmap(":/Comfort/Resources/MeterDisplay/Comfort/Speedmeter/pointer_shade.png"));
-
painter.restore();
-
}
-
-
void Speedmeter::drawOilMass(int mass)
-
{
-
QPainter painter(ui->label_oilmass);
-
painter.setRenderHint((QPainter::SmoothPixmapTransform));
-
painter.setRenderHint(QPainter::HighQualityAntialiasing);
-
painter.translate(305,303.5);
-
painter.setPen(QPen(Qt::white,6,Qt::SolidLine));
-
painter.save();
-
if(mass<=10)
-
{
-
painter.setPen(QPen(Qt::red,6,Qt::SolidLine));
-
painter.drawArc(-304,-308,608,608,247*16,mass*7);
-
}
-
else if(mass>10 && mass<=25)
-
{
-
painter.setPen(QPen(Qt::white,6,Qt::SolidLine));
-
painter.drawArc(-304,-308,608,608,247*16,mass*7);
-
}
-
else if(mass>25 && mass <= 50)
-
{
-
painter.setPen(QPen(Qt::white,6,Qt::SolidLine));
-
painter.drawArc(-304,-308,608,608,247*16,24*7);
-
painter.drawArc(-304,-308,608,608,259*16,(mass-25)*7);
-
}
-
else if(mass>50 && mass <= 75)
-
{
-
painter.setPen(QPen(Qt::white,6,Qt::SolidLine));
-
painter.drawArc(-304,-308,608,608,247*16,24*7);
-
painter.drawArc(-304,-308,608,608,259*16,24*7);
-
painter.drawArc(-304,-308,608,608,271*16,(mass-50)*7);
-
}
-
else if(mass>75 && mass <= 100)
-
{
-
painter.setPen(QPen(Qt::white,6,Qt::SolidLine));
-
painter.drawArc(-304,-308,608,608,247*16,24*7);
-
painter.drawArc(-304,-308,608,608,259*16,24*7);
-
painter.drawArc(-304,-308,608,608,271*16,24*7);
-
painter.drawArc(-304,-308,608,608,283*16,(mass-75)*7);
-
}
-
painter.restore();
-
}
-
-
void Speedmeter::slot_carSpeedSelfInspection(int number)
-
{
-
m_OilMass = number;
-
setCarSpeed(number*2.4);
-
}
-
void SpeedThread::run()
-
{
-
while (true)
-
{
-
emit signal_selfInspection(m_number);
-
if(flagDESC)
-
{
-
-
if(m_number == 0)
-
{
-
emit signal_finished();
-
flagDESC = !flagDESC;
-
}
-
m_number--;
-
}
-
else
-
{
-
m_number++;
-
if(m_number == 100)
-
{
-
flagDESC = !flagDESC;
-
}
-
}
-
msleep(10);
-
}
-
}
2019/08/27 10:58
说明：
本项目中所使借鉴原型来自：[吉利] 博瑞GE | 仪表HMI设计、吉利汽车HMI项目。
设计图的所有权和解释权都归吉利汽车所有。
本项目所有资源文件均有打不死的小海复刻制作。
本项目代码暂时不会开源，有需要的源码的可与我联系，左上角二维码加微信。
本项目仅限学习交流、禁止商业使用。
文章来源: dreamlife.blog.csdn.net，作者：DreamLife.，版权归原作者所有，如需转载，请联系作者。
原文链接：dreamlife.blog.csdn.net/article/details/101363501
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