QT自定义仪表盘yibiaopan.zip

#include "dashboard1.h" #include "ui_dashboard1.h" #include <QDebug> Dashboard1::Dashboard1(QWidget *parent) : QWidget(parent)//, //ui(new Ui::Dashboard1) { setFixedSize(390,390); //setMaximumSize(100,100); //ui->setupUi(this); PaintTimer = new QTimer(); MoveTimer = new QTimer(); connect(PaintTimer,SIGNAL(timeout()),this,SLOT(update())); connect(MoveTimer,SIGNAL(timeout()),this,SLOT(timework())); PaintTimer->start(50); // setDashBoardEdgeColor qDialEdgeColor = QColor(80,80,80); } Dashboard1::~Dashboard1() { //delete ui; } void Dashboard1::paintEvent(QPaintEvent *event) { QPainter painter(this); painter.setRenderHint(QPainter::Antialiasing);//抗锯齿 this->drawDashBoardWiget(&painter); } void Dashboard1::timework() { if(qValue == moveToValue) { qDebug()<<qValue; MoveTimer->stop(); qValue = moveToValue; } else { int dis = this->qValue - moveToValue; if(dis< 0) { qValue+= (-dis)/2+1; } else if(dis> 0) { qValue-= (dis/2)+1; } } } void Dashboard1::qParmInit() { qCircular = QPoint(width() / 2,height() / 2);//圆心位置刷新 qRadius = (width() / 2);//外圆形的半径 //qDialDivideSize = (qDialEdgeSize + qDialEdgeSize * 1.5);//刻度盘的大小 } void Dashboard1::setOtherBackgroud(bool status,QPainter *painter) { if(status == true) { painter->save(); painter->setBrush(Qt::transparent); painter->fillRect(this->rect(), QColor(0, 0, 0, 0)); painter->restore(); } } //绘制控件 void Dashboard1::drawDashBoardWiget(QPainter *painter) { //全局参数初始化 qParmInit(); setOtherBackgroud(true,painter); //绘制表盘 drawDashBoard(painter); //绘制刻度尺 drawDivideRule(painter); //绘制指针 drawDishBoardPointer(painter); //绘制表盘文字 drawDashBoardText(painter); } //绘制仪表盘 void Dashboard1::drawDashBoard(QPainter *painter) { painter->save(); painter->setBrush(Qt::transparent); painter->fillRect(this->rect(), QColor(0, 0, 0, 0)); QBrush qBrush = QBrush(qDialEdgeColor);//灰色画刷,设置表盘边缘原色 painter->setBrush(qBrush);//使用画刷 painter->drawEllipse(qCircular,qRadius,qRadius);//绘制最外层圆盘 qBrush.setColor(qDialDivideBackgroudColor);//黑色画刷 painter->setBrush(qBrush); painter->drawEllipse(qCircular,qRadius - qDialEdgeSize,qRadius - qDialEdgeSize);//绘制黑色条带 qBrush.setColor(qDialEdgeColor);//灰色画刷 painter->setBrush(qBrush); painter->drawEllipse(qCircular,qRadius - qDialDivideSize,qRadius - qDialDivideSize);//绘制内层灰色圆盘 qBrush = QColor(162,88,88);//粉色画刷 painter->setBrush(qBrush); painter->drawEllipse(qCircular,30,30);//内部最大粉色圆盘 painter->restore(); } void Dashboard1::drawDivideRule(QPainter *painter) { painter->save(); //下面开始绘制刻度，90度的间隔 //x2 + y2 = r2 //则圆上任一点为：（x1,y1） //x1 = x0 + r * cos(ao * 3.14 /180 ) //y1 = y0 + r * sin(ao * 3.14 /180 ) float fRadius = 0.0; //为了对称好看我们一般从逆时针90度位置开始绘制 QPen qPen(Qt::white); qPen.setWidth(2); //设置画笔的粗细 painter->setPen(qPen); //先绘制左侧 #if 1 for(int uiLoop = 0;uiLoop < (fMaxDivide * fMinDivide) + 1 ;uiLoop++) { float fAngle = (BaseAngle + ((float)270 / (fMaxDivide * fMinDivide)) * uiLoop); fRadius = (qRadius - 21); int x1Start = qCircular.x() + fRadius * cos(fAngle * 3.14 / 180); int y1Start = qCircular.y() + fRadius * sin(fAngle * 3.14 / 180); if(uiLoop % fMinDivide == 0) { fRadius = qRadius - qDialDivideSize + 1; } else { fRadius = qRadius - (qDialDivideSize / 1.3); } int x2End = qCircular.x() + fRadius * cos(fAngle * 3.14 / 180); int y2End = qCircular.y() + fRadius * sin(fAngle * 3.14 / 180); painter->drawLine(QPoint(x1Start,y1Start),QPoint(x2End,y2End)); } #endif painter->restore(); } void Dashboard1::drawDashBoardText(QPainter *painter) { painter->save(); QPen qPen(Qt::white); qPen.setWidth(2); //设置画笔的粗细 painter->setPen(qPen); //绘制表盘文字 QFont qFont("楷体",28,QFont::Bold,false); painter->setFont(qFont);// painter->drawText(QRectF(qCircular.x() - 17,qCircular.y() + 85,80,80),QString::number(qValue)); float fRadius = 0.0; //通过公式计算刻度文字的位置信息。 for(int uiLoop = 0;uiLoop < (fMaxDivide ) + 1 ;uiLoop++) { int PointeNum = ((fMaxValue / fMaxDivide) * uiLoop); float fAngle = (BaseAngle + ((float)270 / (fMaxDivide)) * uiLoop); fRadius = (qRadius - 75) ;//- 18 fAngle += 4; int x1Start = qCircular.x() + fRadius * cos(fAngle * 3.14 / 180); int y1Start = qCircular.y() + fRadius * sin(fAngle * 3.14 / 180); QFont qFonts("楷体",12,QFont::Bold,false); // QRect rc =qFonts.boundingRect(QString::number((fMaxValue / fMaxDivide) * uiLoop)); // rc.center(); int textWidth = fontMetrics().width(QString::number(PointeNum)); int textHeight = fontMetrics().height();//QString::number(PointeNum) painter->setFont(qFonts); //QRectF(x1Start-textWidth/2,y1Start-(textHeight+1)/2,80,80) painter->drawText(x1Start-textWidth/2-3,y1Start+(textHeight+1)/4+1,QString::number((fMaxValue / fMaxDivide) * uiLoop));//QString::number((fMaxValue / fMaxDivide) * uiLoop) } painter->restore(); } //绘制指针 void Dashboard1::drawDishBoardPointer(QPainter *painter) { painter->save(); QBrush qBrush = QBrush(QColor(Qt::red)); painter->setBrush(qBrush); QPen qPen(Qt::red); qPen.setWidth(2); //设置画笔的粗细 painter->setPen(qPen); float fRadius = 0.0; if(qValue > fMaxValue) { qValue = fMaxValue; } float fAngle = (BaseAngle + ((float)270 / (fMaxValue)) * qValue);//指针中心角度信息。 float fRightAngle = fAngle + 90;//右侧角度 float fLeftAngle = fAngle - 90;//左侧角度 fRadius = (qRadius - 21); int x1Start = qCircular.x() + (qRadius - qDialDivideSize - 3) * cos(fAngle * 3.14 / 180); int y1Start = qCircular.y() + (qRadius - qDialDivideSize - 3) * sin(fAngle * 3.14 / 180); fRadius = qRadius - (qDialDivideSize / 1.3); int x2End = qCircular.x(); //+ fRadius * cos(fAngle * 3.14 / 180); int y2End = qCircular.y(); //+ fRadius * sin(fAngle * 3.14 / 180); int x3End = qCircular.x() + 10 * cos(fRightAngle * 3.14 / 180);//过圆心的右侧切点 int y3End = qCircular.y() + 10 * sin(fRightAngle * 3.14 / 180); int x4End = qCircular.x() + 10 * cos(fLeftAngle * 3.14 / 180);//过圆心的左侧切点 int y4End = qCircular.y() + 10 * sin(fLeftAngle * 3.14 / 180); QPointF qTriangle[3] = {QPoint(x1Start,y1Start),QPoint(x3End,y3End),QPoint(x4End,y4End)}; painter->drawPolygon(qTriangle,3); painter->drawEllipse(qCircular,15,15);//内部小粉色圆盘 painter->restore(); } void Dashboard1::setValue(int qValue) { this->qValue = qValue; } //动态移动到对应值 void Dashboard1::MovetoValue(int qValue1) { MoveTimer->start(50); moveToValue = qValue1; } void Dashboard1::setMaxValue(float fMaxValue) { this->fMaxValue = fMaxValue; } void Dashboard1::setDashBoardEdgeColor(QColor &qColor) { qDialEdgeColor = qColor; } void Dashboard1::setDashDivideBackgroudColor(QColor &qColor) { qDialDivideBackgroudColor = qColor; }