gui.GraphViewer.LinkItem Class Reference

Inheritance diagram for gui.GraphViewer.LinkItem:

Collaboration diagram for gui.GraphViewer.LinkItem:

Public Member Functions
def	__init__ (self, fromPort, toPort, canvas)
def	setFromPoint (self, x, y)
def	setToPoint (self, x, y)
def	moveBy (self, dx, dy)
def	setArrow (self)
def	popup (self, canvasView)
def	delete (self)
def	tooltip (self, view, pos)

Public Attributes
	arrow

Detailed Description

Definition at line 224 of file GraphViewer.py.

Constructor & Destructor Documentation

__init__()

def gui.GraphViewer.LinkItem.__init__	(		self,
			fromPort,
			toPort,
			canvas
	)

Definition at line 225 of file GraphViewer.py.

  def __init__(self,fromPort, toPort,canvas):
    QCanvasLine.__init__(self,canvas)
    self.setPen(QPen(Qt.black))
    self.setBrush(QBrush(Qt.red))
    fromPort.addOutLink(self)
    toPort.addInLink(self)
    self.setPoints(int(fromPort.x()),int(fromPort.y()), int(toPort.x()), int(toPort.y()))
    self.setZ(min(fromPort.z(),toPort.z())-1)
    self.setVisible(True)
    self.arrow = QCanvasPolygon(self.canvas())
    self.arrow.setBrush(QBrush(Qt.black))
    self.setArrow()
    self.arrow.show()
 

Member Function Documentation

delete()

def gui.GraphViewer.LinkItem.delete

(

self

)

Definition at line 272 of file GraphViewer.py.

  def delete(self):
    print("delete link")
 

Referenced by gui.GraphViewer.LinkItem.popup().

moveBy()

def gui.GraphViewer.LinkItem.moveBy	(		self,
			dx,
			dy
	)

Definition at line 247 of file GraphViewer.py.

  def moveBy(self,dx,dy):
    pass
 

popup()

def gui.GraphViewer.LinkItem.popup	(		self,
			canvasView
	)

Definition at line 264 of file GraphViewer.py.

  def popup(self,canvasView):
    menu=QPopupMenu()
    caption = QLabel( "<font color=darkblue><u><b>Node Menu</b></u></font>",menu )
    caption.setAlignment( Qt.AlignCenter )
    menu.insertItem( caption )
    menu.insertItem("Delete", self.delete)
    return menu
 

References gui.CItems.LinkItem.delete(), and gui.GraphViewer.LinkItem.delete().

Referenced by gui.GraphViewer.GraphViewer.contentsMousePressEvent().

setArrow()

def gui.GraphViewer.LinkItem.setArrow

(

self

)

Definition at line 250 of file GraphViewer.py.

  def setArrow(self):
    x1,y1=self.startPoint().x(),self.startPoint().y()
    x2,y2=self.endPoint().x(),self.endPoint().y()
    d=math.hypot(x2-x1,y2-y1)
    sina=(y2-y1)/d
    cosa=(x2-x1)/d
    x=(x1+x2)/2.
    y=(y1+y2)/2.
    pa=QPointArray(3)
    pa.setPoint(0, QPoint(x+10*cosa,y+10*sina))
    pa.setPoint(1, QPoint(x-5*sina,y+5*cosa))
    pa.setPoint(2, QPoint(x+5*sina,y-5*cosa))
    self.arrow.setPoints(pa)
 

Referenced by gui.CItems.LineItem.setFromPoint(), gui.GraphViewer.LinkItem.setFromPoint(), gui.CItems.LineItem.setToPoint(), and gui.GraphViewer.LinkItem.setToPoint().

setFromPoint()

def gui.GraphViewer.LinkItem.setFromPoint	(		self,
			x,
			y
	)

Definition at line 239 of file GraphViewer.py.

  def setFromPoint(self,x,y):
    self.setPoints(x,y,self.endPoint().x(),self.endPoint().y())
    self.setArrow()
 

References gui.CItems.LineItem.setArrow(), and gui.GraphViewer.LinkItem.setArrow().

setToPoint()

def gui.GraphViewer.LinkItem.setToPoint	(		self,
			x,
			y
	)

Definition at line 243 of file GraphViewer.py.

  def setToPoint(self,x,y):
    self.setPoints(self.startPoint().x(), self.startPoint().y(),x,y)
    self.setArrow()
 

References gui.CItems.LineItem.setArrow(), and gui.GraphViewer.LinkItem.setArrow().

tooltip()

def gui.GraphViewer.LinkItem.tooltip	(		self,
			view,
			pos
	)

Definition at line 275 of file GraphViewer.py.

  def tooltip(self,view,pos):
    r = QRect(pos.x(), pos.y(), pos.x()+10, pos.y()+10)
    s = QString( "link: %d,%d" % (r.center().x(), r.center().y()) )
    view.tip( r, s )
 

Member Data Documentation

arrow

gui.GraphViewer.LinkItem.arrow

Definition at line 234 of file GraphViewer.py.

Referenced by gui.CItems.LineItem.clear().

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The documentation for this class was generated from the following file:

• src/pyqt/gui/GraphViewer.py