I am taking data from socket in which some paramaters are changing after every second. I am projecting the data on my gui. I want to update my gui after every second.
This is my sockettest class where i am receving the data and i want to plot the data in tactical widget.
void socketTest::readyRead()
{
//QByteArray buffer;
int numRead = 0, numReadTotal = 0;
char buffer[180];
socketTest *a = new socketTest();
tacticalwidget *b = new tacticalwidget();
forever {
numRead = socket->read(buffer, 180);
// do whatever with array
numReadTotal += numRead;
memcpy (detailed_track_data, buffer, sizeof(buffer));
//qDebug() << sizeof(buffer);
amp = qToBigEndian(detailed_track_data[0].amplitude);
theta = qToBigEndian(detailed_track_data[0].doa)*0.1;
emit SIGNAL(valuechanged());
connect(a,SIGNAL(valuechanged()), b , SLOT(tacticalwidget::paintEvent()));
int track_state = qToBigEndian(detailed_track_data[0].track_status);
int bit1 = 2^5;
int bit2 = 2^4;
//check hostility level for hostile
if(((track_state) & (bit1)) == 0 && ((track_state) & (bit2)) == 1)
tracktype = 0;// Hostile
else
//check hostility level for unknown
if(((track_state) & (bit1)) == 0 && ((track_state) & (bit2)) == 0)
tracktype = 1;//unknown
else
tracktype = 2;//friendly
if (numRead == 0 && !socket->waitForReadyRead())
break;
}
TacticalWidget code:
void tacticalwidget::paintEvent(QPaintEvent */*e*/)
{
QSize sz = size();
int radius;
QPainter painter(this);
painter.setRenderHint(QPainter::Antialiasing,true);
QBrush br;
br.setColor(Qt::black);
painter.setBrush(br);
painter.fillRect(0,0,sz.width(),sz.height(),Qt::SolidPattern);
int centrex = sz.width()/2 ;
int centrey = sz.height()/2;
if (centrex < centrey )
radius = centrex -4;
else
radius = centrey -4;
painter.setPen(QPen(Qt::green,2,Qt::SolidLine,Qt::RoundCap));
painter.drawEllipse(centrex - radius,centrey - radius,2*radius,2*radius);
painter.setPen(QPen(Qt::yellow,2,Qt::SolidLine,Qt::RoundCap));
painter.drawEllipse(centrex - (radius*2/3),centrey-radius*2/3),(radius*4 /3),(radius*4/3));
painter.setPen(QPen(Qt::red,2,Qt::SolidLine,Qt::RoundCap));
painter.drawEllipse(centrex - radius/3,centrey - radius/3,radius*2/3,radius*2/3);
painter.setPen(QPen(Qt::white,2,Qt::SolidLine,Qt::RoundCap));
painter.drawLine(centrex,0,centrex,centrey*2);
painter.drawLine(0,centrey,centrex*2,centrey);
painter.drawText(centrex - radius + 4,centrey,"270");
painter.drawText(centrex,centrey-radius + 4 ,"N");
painter.drawText(centrex,centrey+radius -4,"180");
painter.drawText(centrex + radius -4,centrey,"90");
painter.setPen(QPen(Qt::magenta,2,Qt::SolidLine,Qt::RoundCap));
double theta = 45 * PI /180;
painter.drawLine(centrex,centrey,centrex + radius * sin(theta),centrey - radius * cos(theta));
//Track Display
double amplitudefactor = (theObj.amp + 80)/100;
//int trackNo = i+1;
double pointx,pointy;
int circleradius,innerradius = 0;
switch(theObj.tracktype)
{
case 0://hostile
circleradius = radius/3;
pointx =centrex + circleradius * sin(theObj.theta) * amplitudefactor;
pointy = centrey - circleradius * cos(theObj.theta)* amplitudefactor;
painter.setPen(QPen(Qt::red,2,Qt::SolidLine,Qt::RoundCap));
painter.drawImage(pointx,pointy,QImage("E:\\bitmaps\\rbitmap.png"));
break;
case 1://unknown
circleradius = radius/3;
innerradius = radius/3;
pointx =centrex + innerradius * sin(theObj.theta) + circleradius * sin(theObj.theta) * amplitudefactor;
pointy = centrey - innerradius * cos(theObj.theta) - circleradius * cos(theObj.theta)* amplitudefactor;
painter.setPen(QPen(Qt::yellow,2,Qt::SolidLine,Qt::RoundCap));
painter.drawImage(pointx,pointy,QImage("E:\\bitmaps\\ybitmap.png"));
break;
case 2: //friendly
circleradius = radius/3;
innerradius = radius *2/3;
pointx =centrex + innerradius * sin(theObj.theta) + circleradius * sin(theObj.theta) * amplitudefactor;
pointy = centrey - innerradius * cos(theObj.theta) - circleradius * cos(theObj.theta)* amplitudefactor;
painter.setPen(QPen(Qt::green,2,Qt::SolidLine,Qt::RoundCap));
painter.drawImage(pointx,pointy,QImage("E:\\bitmaps\\gbitmap.png"));
break;
default:
break;
}
// setStyleSheet("background-color: rgb(0, 0, 0);");
}
