vcs.maemo.org Git - mardrone/blob - mardrone/gauges/gaugehsi.cpp

   1 #include "gaugehsi.h"
   2 #include <QDebug>
   3
   4 GaugeHSI::GaugeHSI(QGraphicsItem *parent) :
   5     Gauge(parent)
   6 {
   7 }
   8
   9 void GaugeHSI::paintHSI(QPainter *painter,int width,int height)
  10 {
  11     float alpha;
  12     int xo=(width/2)/m_scale;
  13     int yo=(height/2)/m_scale;
  14     int r=width/2;
  15     painter->setTransform(QTransform().translate(scenePos().x()+width/2,scenePos().y()+height/2).scale(m_scale,m_scale));
  16     QTransform savematrix= painter->transform ();
  17     QPen pen(m_color);
  18     pen.setWidth(1);
  19     painter->setPen(pen);
  20     QBrush cbrush(m_color);
  21     painter->setBrush(cbrush);
  22
  23
  24     QPen nopen(Qt::NoPen);
  25     QBrush nbrush(Qt::NoBrush);
  26     QBrush backBrush(m_backColor);
  27
  28     alpha=0;
  29     QFont font=m_font;
  30     font.setPixelSize(font.pixelSize()*width/150.0); // Scale font relative to "default" size
  31     painter->setFont(font);
  32     QFontMetrics fm(font);
  33     QPolygon zeroTriangle;
  34     QPolygon zeroPlane;
  35
  36     zeroPlane+=QPoint(-2,0);
  37     zeroPlane+=QPoint(-20,0);
  38     zeroPlane+=QPoint(-20,-2);
  39     zeroPlane+=QPoint(-2,-4);
  40     zeroPlane+=QPoint(0,-14);
  41     zeroPlane+=QPoint(2,-4);
  42     zeroPlane+=QPoint(20,-2);
  43     zeroPlane+=QPoint(20,0);
  44     zeroPlane+=QPoint(2,0);
  45     zeroPlane+=QPoint(2,15);
  46     zeroPlane+=QPoint(10,15);
  47     zeroPlane+=QPoint(10,18);
  48     zeroPlane+=QPoint(-10,18);
  49     zeroPlane+=QPoint(-10,15);
  50     zeroPlane+=QPoint(-2,15);
  51
  52     zeroTriangle+=QPoint(0,-xo+10);
  53     zeroTriangle+=QPoint(-5,-xo);
  54     zeroTriangle+=QPoint(5,-xo);
  55     zeroTriangle+=QPoint(0,-xo+10);
  56
  57
  58
  59
  60     painter->setBrush(backBrush);
  61     painter->setPen(nopen);
  62     painter->drawChord(QRect(-r,-r,2*r,2*r),0,360*16);
  63     painter->setBrush(cbrush);
  64     painter->setPen(pen);
  65
  66     painter->drawPolygon(zeroTriangle);
  67     painter->drawPolygon(zeroPlane);
  68
  69     while(alpha<360) {
  70         QString label;
  71         painter->setTransform(savematrix);
  72          painter->setTransform(QTransform().rotate(alpha+m_value),true);
  73         label=QString("%1").arg(alpha/10);
  74         if(alpha==0)   label=" N";
  75         if(alpha==90)  label=" E";
  76         if(alpha==180) label=" S";
  77         if(alpha==270) label=" W";
  78         int labelWidth=fm.width(label);
  79         int labelHeight=fm.height();
  80         painter->drawText(labelWidth/-2,-r+10+labelHeight,label);
  81         painter->drawLine(0,r-2,0,r-12);
  82         painter->setTransform(savematrix);
  83         painter->setTransform(QTransform().rotate(alpha+m_value+10),true);
  84         painter->drawLine(0,r-2,0,r-7);
  85         painter->setTransform(savematrix);
  86         painter->setTransform(QTransform().rotate(alpha+m_value+20),true);
  87         painter->drawLine(0,r-2,0,r-7);
  88         painter->setTransform(savematrix);
  89         painter->setTransform(QTransform().rotate(alpha+m_value+5),true);
  90         painter->drawLine(0,r-2,0,r-7);
  91         painter->setTransform(savematrix);
  92         painter->setTransform(QTransform().rotate(alpha+m_value+15),true);
  93         painter->drawLine(0,r-2,0,r-7);
  94         painter->setTransform(savematrix);
  95         painter->setTransform(QTransform().rotate(alpha+m_value+25),true);
  96         painter->drawLine(0,r-2,0,r-7);
  97         alpha+=m_tickIncrement?m_tickIncrement:10;
  98     }
  99 }
 100
 101 void GaugeHSI::paint(QPainter *painter,const QStyleOptionGraphicsItem *option,
 102                            QWidget *widget)
 103 {
 104         paintHSI(painter,size().width(),size().height());
 105 };