Qt 飞机仪表显示

使用Qt简单谢了一个飞机的一小部分仪表，还没有写完，目前只写了一个界面，不过思想应该是一样的。

效果图如下

其中主要由转速表，和下面的部分数字显示构成

转速表代码

.h文件

#ifndef CONTROL_ENGINE_H

#define CONTROL_ENGINE_H

#include <QWidget>

#include <QPainter>

#include <QtMath>

#define PI 3.1415926

#define GREEN 0,255,0

#define YELLOW 211,137,50

#define WHITE 255,255,255

namespace Ui {

class Control_Engine;

}

class Control_Engine : public QWidget

{

    Q_OBJECT

public:

    explicit Control_Engine(QWidget *parent,int temp);

    ~Control_Engine();

    void set_Engine(int temp);

private:

    bool eventFilter(QObject *temp1, QEvent *temp2);

    void draw_Engine();

    void draw_Percent();

private:

    Ui::Control_Engine *ui;

    int num_Engine;

    int num_Percent;

};

#endif // CONTROL_ENGINE_H

cpp文件

#include "control_engine.h"

#include "ui_control_engine.h"

#include <QDebug>

Control_Engine::Control_Engine(QWidget *parent,int temp) :

    QWidget(parent),

    ui(new Ui::Control_Engine)

{

    ui->setupUi(this);

    ui->label_draw->installEventFilter(this);

    ui->label_percent->installEventFilter(this);

    num_Engine = 0;

    num_Percent = 0;

    if(temp == 0)

    {

        ui->label_draw->move(50,0);

        ui->label->move(40,20);

        ui->label_percent->move(0,17);

    }

    else if(temp == 1)

    {

        ui->label_draw->move(0,0);

        ui->label->move(110,20);

        ui->label_percent->move(70,17);

    }

}

Control_Engine::~Control_Engine()

{

    delete ui;

}

void Control_Engine::set_Engine(int temp)

{

    num_Engine = temp;

    num_Percent = temp/2;

    update();

}

bool Control_Engine::eventFilter(QObject *temp1, QEvent *temp2)

{

    if((temp1 == ui->label_draw)&&temp2->type() == QEvent::Paint)

    {

        draw_Engine();

    }

    if((temp1 == ui->label_percent)&&temp2->type() == QEvent::Paint)

    {

        draw_Percent();

    }

}

void Control_Engine::draw_Engine()

{

    if(num_Engine<=200)

    {

        QPainter painter1(ui->label_draw);

        painter1.setRenderHint(QPainter::Antialiasing,true);

        painter1.setPen(QPen(QColor(GREEN),3,Qt::SolidLine,Qt::FlatCap));

        painter1.drawArc(13,3,54,54,180*16,270*16);

        painter1.drawLine(3,30,14,30);

        QPainter painter2(ui->label_draw);

        painter2.setRenderHint(QPainter::Antialiasing,true);

        painter2.setPen(QPen(QColor(GREEN),3,Qt::SolidLine,Qt::FlatCap));

        painter2.drawLine(40,30,(40+27*qSin(num_Engine*PI/180.0)),(30-27*qCos(num_Engine*PI/180.0)));

    }

    else

    {

        QPainter painter1(ui->label_draw);

        painter1.setRenderHint(QPainter::Antialiasing,true);

        painter1.setPen(QPen(QColor(YELLOW),3,Qt::SolidLine,Qt::FlatCap));

        painter1.drawArc(13,3,54,54,180*16,270*16);

        painter1.drawLine(3,30,14,30);

        QPainter painter2(ui->label_draw);

        painter2.setRenderHint(QPainter::Antialiasing,true);

        painter2.setPen(QPen(QColor(YELLOW),3,Qt::SolidLine,Qt::FlatCap));

        painter2.drawLine(40,30,(40+27*qSin(num_Engine*PI/180.0)),(30-27*qCos(num_Engine*PI/180.0)));

    }

}

void Control_Engine::draw_Percent()

{

    if(num_Percent<=100)

    {

        QPainter painter1(ui->label_percent);

        painter1.setPen(QPen(QColor(WHITE),1.5));

        QRect rect1(1,3,36,20);

        painter1.drawRect(rect1);

        QPainter painter2(ui->label_percent);

        painter2.setPen(QPen(QColor(GREEN),1.5));

        QString str = QString::number(num_Percent,10);

        QFont font("宋体",12,QFont::Bold);

        painter2.setFont(font);

        painter2.drawText(rect1,Qt::AlignCenter,str);

    }

    else

    {

        QPainter painter1(ui->label_percent);

        painter1.setPen(QPen(QColor(WHITE),1.5));

        QRect rect1(1,3,36,20);

        painter1.drawRect(rect1);

        QPainter painter2(ui->label_percent);

        painter2.setPen(QPen(QColor(YELLOW),1.5));

        QString str = QString::number(num_Percent,10);

        QFont font("宋体",12,QFont::Bold);

        painter2.setFont(font);

        painter2.drawText(rect1,Qt::AlignCenter,str);

    }

}

百分比代码

.h.

#ifndef CONTROL_PERCENT_H

#define CONTROL_PERCENT_H

#include <QWidget>

#include <QPainter>

#define GREEN 0,255,0

#define WHITE 255,255,255

namespace Ui {

class Control_Percent;

}

class Control_Percent : public QWidget

{

    Q_OBJECT

public:

    explicit Control_Percent(QWidget *parent = 0);

    ~Control_Percent();

    void set_Percent(int temp);

private:

    void draw_Percent();

    bool eventFilter(QObject *temp1, QEvent *temp2);

private:

    Ui::Control_Percent *ui;

    int num_Percent;

};

#endif // CONTROL_PERCENT_H

cpp

#include "control_percent.h"

#include "ui_control_percent.h"

Control_Percent::Control_Percent(QWidget *parent) :

    QWidget(parent),

    ui(new Ui::Control_Percent)

{

    ui->setupUi(this);

    num_Percent = 0;

    ui->label_percent->installEventFilter(this);

}

Control_Percent::~Control_Percent()

{

    delete ui;

}

void Control_Percent::set_Percent(int temp)

{

    num_Percent = temp;

}

void Control_Percent::draw_Percent()

{

    QPainter painter1(ui->label_percent);

    painter1.setPen(QPen(QColor(WHITE),1.5));

    QRect rect1(1,3,36,20);

    painter1.drawRect(rect1);

    QPainter painter2(ui->label_percent);

    painter2.setPen(QPen(QColor(GREEN),1.5));

    QString str = QString::number(num_Percent,10);

    QFont font("宋体",12,QFont::Bold);

    painter2.setFont(font);

    painter2.drawText(rect1,Qt::AlignCenter,str);

}

bool Control_Percent::eventFilter(QObject *temp1, QEvent *temp2)

{

    if((temp1 == ui->label_percent)&&temp2->type() == QEvent::Paint)

    {

        draw_Percent();

    }

}

剩下的其它小部分代码

界面初始化部分代码

void MainWidget::set_Form_down(int temp)

{

    switch (temp) {

    case 0:

    {

        if(ui->widget_Form_Down->isHidden())

        {

            ui->widget_Form_Down->show();

        }

        else

        {

            ui->label_Form_Down_Plane->setStyleSheet("border-image:url(:/Form_Down/Source/Form_Down/F22.png)");

            if(engine_left == NULL)

            {

                engine_left = new Control_Engine(ui->widget_Form_Down,LEFT);

                engine_left->setGeometry(17,20,120,80);

            }

            if(engine_right == NULL)

            {

                engine_right = new Control_Engine(ui->widget_Form_Down,RIGHT);

                engine_right->setGeometry(180,20,120,80);

            }

            //            QPalette palette;

            //            palette.setColor(QPalette::WindowText,Qt::red);

            //            ui->label_ENG->setPalette(palette);

            //            QFont font;

            //            font.setPointSize(12);

            //            ui->label_ENG->setFont(font);

            //            ui->label_ENG->setText("TEST");

            //            ui->label_ENG->setAlignment(Qt::AlignCenter);

            if(percent1 == NULL)

            {

                percent1 = new Control_Percent(ui->widget_Form_Down);

                percent1->setGeometry(30,170,50,26);

                percent1->set_Percent(50);                      //test

            }

            if(percent2 == NULL)

            {

                percent2 = new Control_Percent(ui->widget_Form_Down);

                percent2->setGeometry(245,170,50,26);

                percent2->set_Percent(50);                      //test

            }

            if(percent3 == NULL)

            {

                percent3 = new Control_Percent(ui->widget_Form_Down);

                percent3->setGeometry(30,240,50,26);

                percent3->set_Percent(50);                      //test

            }

            if(percent4 == NULL)

            {

                percent4 = new Control_Percent(ui->widget_Form_Down);

                percent4->setGeometry(245,240,50,26);

                percent4->set_Percent(50);                      //test

            }

        }

        break;

    }

    case 1:

        ui->widget_Form_Down->hide();

        break;

    default:

        break;

    }

}

绘制其它部分代码

void MainWidget::draw_Gun()

{

    QPainter painter1(ui->label_GUN);

    painter1.setPen(QPen(QColor(WHITE),1.5));

    QRect rect1(1,3,76,22);

    painter1.drawRect(rect1);

    QPainter painter2(ui->label_GUN);

    painter2.setPen(QPen(QColor(GREEN),1.5));

    QString str = "GUN "+QString::number(num_GUN,10);

    QFont font("宋体",12,QFont::Bold);

    painter2.setFont(font);

    painter2.drawText(rect1,Qt::AlignCenter,str);

}

void MainWidget::draw_Information()

{

    QPainter painter1(ui->label_Information);

    painter1.setPen(QPen(QColor(WHITE),1.5));

    QRect rect1(1,3,118,45);

    QRect rect2(1,3,118,24);

    QRect rect3(1,24,118,24);

    painter1.drawRect(rect1);

    QPainter painter2(ui->label_Information);

    painter2.setPen(QPen(QColor(WHITE),1.5));

    QString str = "BAY DOORS";

    QFont font("宋体",12,QFont::Bold);

    painter2.setFont(font);

    painter2.drawText(rect2,Qt::AlignCenter,str);

    QPainter painter3(ui->label_Information);

    if(BAY_DOORS == "CLOSED")

    {

        painter3.setPen(QPen(QColor(GREEN),1.5));

    }

    else

    {

        painter3.setPen(QPen(QColor(RED),1.5));

    }

    QFont font1("宋体",12,QFont::Bold);

    painter3.setFont(font1);

    painter3.drawText(rect3,Qt::AlignCenter,BAY_DOORS);

}

void MainWidget::draw_Bay()

{

    QPainter painter(ui->label_BAY);

    QRect rect1(0,0,30,16);

    if(BAY_DOORS == "CLOSED")

    {

        painter.setPen(QPen(QColor(GREEN),1.5));

    }

    else

    {

        painter.setPen(QPen(QColor(RED),1.5));

    }

    QString str = "BAY";

    QFont font("宋体",12,QFont::Bold);

    painter.setFont(font);

    painter.drawText(rect1,Qt::AlignCenter,str);

}

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