gcs-nf/Cockpit/leftladder.cpp

#include "leftladder.h"

LeftLadder::LeftLadder(QWidget *parent): QWidget(parent)
{

     m_CentreLineColor = Qt::white;


}



void LeftLadder::setAirSpeed(float speed)
{
    airspeed = speed;
}









void LeftLadder::mouseReleaseEvent(QMouseEvent *e)
{
    qDebug() << "release" << e;
    update();
}

void LeftLadder::mousePressEvent(QMouseEvent *e)
{
    qDebug() << "press" << e;

    update();
}

void LeftLadder::mouseDoubleClickEvent(QMouseEvent *e)
{
    qDebug() << "double clicked" << e;
    update();
}

void LeftLadder::wheelEvent(QWheelEvent *e)
{
    qDebug() << "wheel event" << e;


    update();
}



void LeftLadder::paintEvent(QPaintEvent *)
{
    QPainter painter(this);
    painter.setRenderHint(QPainter::Antialiasing); 	/* 使用反锯齿(如果可用) */

    painter.translate(0, height() / 2);	/* 坐标变换为窗体中心 */
    int side = qMin(width(), height());                 /* 这一句决定了这个模块只能是方形 */
    painter.scale(side / 1000.0, side / 1000.0);	/* 比例缩放 */
    painter.setPen(Qt::NoPen);


    drawLeftScale(&painter);



}


//画左刻度尺 用单独的控件最容易解决
void LeftLadder::drawLeftScale(QPainter *painter)
{
    painter->save();

    //平移坐标
    //painter->translate(0,0);

    QPen ePen;
    QFont font;
    //画一个半透明的小方块
    painter->save();
    painter->setOpacity(0.3f);
    ePen.setColor(QColor("#7A7A7A"));
    painter->setBrush(QColor("#7A7A7A"));
    painter->drawRect(0,-600,300,1200);
    painter->restore();

    //画最底下的黑色单位显示框
    painter->save();
    ePen.setColor(QColor("#FFFFFF"));
    ePen.setWidth(10);


    font.setPixelSize(60);

    painter->setPen(ePen);
    painter->setFont(font);
    painter->setBrush(QColor("#000000"));
    painter->drawRect(0,600,300,100);

    painter->drawText(QRect(20,600,280,100),Qt::AlignLeft|Qt::AlignVCenter,"TAS " + QString::number(airspeed));

    painter->restore();


    //画旁边的速度刻度，并显示
    painter->save();

    painter->translate(0,1200.0f/40.0f * airspeed);

    float h = 1200.0f/40.0f;//单位高度


    for(int i = -19 - airspeed;i<=(19 - airspeed);i+=1)
    {

        QString strText = QString::number(-i);  //设置当前字体
        painter->save();

        QPen ePen;
        QFont font;
        ePen.setColor(m_CentreLineColor);
        ePen.setWidth(10);
        font.setPointSize(60);

        painter->setPen(ePen);
        painter->setFont(font);

        if((i%10) == 0)
        {
           //if((i * h > 100)||(i * h < -100))
           //{
               painter->drawLine( 220,i * h,290,i * h);
               painter->drawText(QRect(20,i * h - 30,190,60),Qt::AlignVCenter|Qt::AlignRight, strText);
           //}
        }
        else if((i%5) == 0)
        {
           painter->drawLine(240,i * h,290,i * h);
        }




        painter->restore();
    }





    painter->restore();


    //画旁边的速度彩条
    painter->save();

    painter->setBrush(QColor("#FFC125"));
    painter->drawRect(275,-600,25,1200);
    painter->restore();

    //画 中间黑色的显示块
    painter->save();

    static const QPointF points1[11] = {
          QPointF(  0,-50),
          QPointF(200,-50),
          QPointF(200,-100),
          QPointF(275,-100),

          QPointF(275,-25),
          QPointF(290, 0),
          QPointF(275, 25),

          QPointF(275, 100),
          QPointF(200, 100),
          QPointF(200, 50),
          QPointF(  0, 50)
      };

      painter->setBrush(QColor("#000000"));
      painter->drawPolygon(points1, 11);



      ePen.setColor(m_CentreLineColor);
      ePen.setWidth(15);
      font.setPointSize(90);
      painter->setPen(ePen);
      painter->setFont(font);





      QString DacadeText = QString::number(int(airspeed/10));  //设置十位以上
      QString UnitText = QString::number(qAbs(int(airspeed)%10));  //设置个位
      painter->drawText(QRect(0,-50,200,100),Qt::AlignVCenter|Qt::AlignRight, DacadeText);
      //painter->drawText(QRect(200,-50,100,100),Qt::AlignVCenter|Qt::AlignLeft, UnitText);

      float Unit = airspeed - int(airspeed)/10 * 10;
      float Decimal = (airspeed - int(airspeed));


      qDebug() << Unit;
      for(int i = -2 - Unit;i<(2 - Unit);i+=1)
      {

          QString strText = QString::number(((-i < 0)?(-i+10):((-i>=10)?(-i-10):(-i))));  //设置当前字体
          painter->save();

          QPen ePen;
          QFont font;
          ePen.setColor(m_CentreLineColor);
          ePen.setWidth(15);
          font.setPointSize(90);

          painter->setPen(ePen);
          painter->setFont(font);
          painter->drawText(QRect(200,(i + Unit) * 100 - 50,100,90),Qt::AlignVCenter|Qt::AlignLeft, strText);






          painter->restore();
      }


      painter->restore();




    painter->restore();
}