QtSektorivalikko

   1 class SectorMenu(QGraphicsItem):
   2   def __init__(self, position, scene, matrix=QMatrix(),parent=None):
   3     super(SectorMenu, self).__init__()
   4     self.penW=2
   5     self.parent=parent
   6     self.setFlags(QGraphicsItem.ItemIsSelectable|
   7             QGraphicsItem.ItemIsFocusable)
   8     self.innerRadius=16.0
   9     self.outerRadius=42.0
  10     r=self.innerRadius
  11     R=self.outerRadius
  12     self.outerRect=QRectF(-R, -R, 2*R, 2*R)
  13     self.innerRect=QRectF(-r, -r, 2*r, 2*r)
  14     self.sectors=self.calcSectors()
  15     self.setPos(position)
  16     #self.setPos(QPointF(0.0,0.0))
  17     self.setMatrix(matrix)
  18     scene.clearSelection()
  19     scene.addItem(self)
  20     self.setSelected(True)
  21     self.setFocus()
  22     self.setAcceptsHoverEvents(True)
  23 
  24   def calcSectors(self):
  25     sectors=[]
  26     for start,angle in [(0,60),(70,60),(140,60),(210,60),(280,60)]:
  27       startAngle = start#*16
  28       spanAngle = angle#*16
  29       # go radians
  30       start=pi*start/180
  31       angle=pi*angle/180
  32       r=self.innerRadius+self.penW/2.0
  33       R=self.outerRadius-self.penW/2.0
  34       #x=position.x(); y=position.y()
  35       x=0.0; y=0.0
  36       P1=QPointF(x+r*cos(start),y-r*sin(start))
  37       P2=QPointF(x+R*cos(start),y-R*sin(start))
  38       P3=QPointF(x+r*cos(start+angle),y-r*sin(start+angle))
  39       P4=QPointF(x+R*cos(start+angle),y-R*sin(start+angle))
  40       #sectors.append((startAngle, spanAngle, P1,P2,P3,P4))
  41       # find the path:
  42       path=QPainterPath()
  43       path.moveTo(P1)
  44       path.lineTo(P2)
  45       path.arcTo(self.outerRect, startAngle, spanAngle)
  46       #path.arcTo(self.innerRect, startAngle, spanAngle)
  47       #path.moveTo(P3)
  48       path.lineTo(P4)
  49       #path.arcTo(self.outerRect, startAngle, spanAngle)
  50       path.arcTo(self.innerRect, startAngle+spanAngle, -spanAngle)
  51       sectors.append(path)
  52     return sectors
  53 
  54   def shape(self):
  55     path=QPainterPath()
  56     for  s in self.sectors:
  57       path.addPath(s)
  58     return path
  59 
  60   def boundingRect(self):
  61     return self.outerRect
  62   
  63       
  64   def hoverMoveEvent(self, event):
  65     print "hoverMoveEvent ", random.uniform(-100,100)
  66 
  67 
  68   def paint(self, painter, option, widget):
  69     pen = QPen(Qt.SolidLine)
  70     pen.setColor(aiColor(idx=22))
  71     pen.setWidth(self.penW)
  72     painter.setPen(pen)
  73     i=0
  74     #for startAngle,spanAngle,P1,P2,P3,P4 in self.sectors:
  75     for s in self.sectors:
  76       i+=3
  77       pen.setColor(aiColor(idx=i));painter.setPen(pen)
  78       painter.setBrush(aiColor(idx=i))
  79       painter.strokePath(s,pen)
  80       painter.drawPath(s);