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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