gui.CItems.LineItem Class Reference

Inheritance diagram for gui.CItems.LineItem:

Collaboration diagram for gui.CItems.LineItem:

Public Member Functions
def	__init__ (self, obj, fromPoint, toPoint, canvas)
def	setFromPoint (self, x, y)
def	setToPoint (self, x, y)
def	moveBy (self, dx, dy)
def	setArrow (self)
def	getObj (self)
def	handleDoubleClick (self, pos)
def	clear (self)
def	selected (self)

Public Attributes
	obj
	item
	fromPoint
	toPoint
	arrow

Detailed Description

A line between 2 points

Definition at line 110 of file CItems.py.

Constructor & Destructor Documentation

__init__()

def gui.CItems.LineItem.__init__	(		self,
			obj,
			fromPoint,
			toPoint,
			canvas
	)

Definition at line 112 of file CItems.py.

  def __init__(self,obj,fromPoint, toPoint,canvas):
    QCanvasLine.__init__(self,canvas)
    self.obj=obj
    self.item=None
    self.fromPoint=fromPoint
    self.toPoint=toPoint
    self.setPen(QPen(Qt.black))
    self.setBrush(QBrush(Qt.red))
    self.setPoints(int(fromPoint.x()),int(fromPoint.y()), int(toPoint.x()), int(toPoint.y()))
    self.setZ(min(fromPoint.z(),toPoint.z())-1)
    self.setVisible(True)
    self.arrow = QCanvasPolygon(self.canvas())
    self.arrow.setBrush(QBrush(Qt.black))
    self.setArrow()
    self.arrow.show()
 

Member Function Documentation

clear()

def gui.CItems.LineItem.clear

(

self

)

To remove from canvas

Definition at line 163 of file CItems.py.

  def clear(self):
    """To remove from canvas"""
    self.setCanvas(None)
    self.fromPoint=None
    self.toPoint=None
    self.obj=None
    self.arrow.setCanvas(None)
    self.arrow=None
 

References gui.CItems.LineItem.arrow, gui.GraphViewer.LinkItem.arrow, gui.CItems.LineItem.fromPoint, Solution.obj, gui.CItems.TextItem.obj, gui.CItems.PointItem.obj, gui.CItems.LineItem.obj, and gui.CItems.LineItem.toPoint.

getObj()

def gui.CItems.LineItem.getObj

(

self

)

The object which contains the line

Definition at line 153 of file CItems.py.

  def getObj(self):
    """The object which contains the line"""
    return self.obj

References Solution.obj, gui.CItems.TextItem.obj, gui.CItems.PointItem.obj, and gui.CItems.LineItem.obj.

handleDoubleClick()

def gui.CItems.LineItem.handleDoubleClick	(		self,
			pos
	)

Definition at line 156 of file CItems.py.

  def handleDoubleClick(self,pos):
    #split the line
    self.obj.splitline(self,pos)
 

References Solution.obj, gui.CItems.TextItem.obj, gui.CItems.PointItem.obj, and gui.CItems.LineItem.obj.

moveBy()

def gui.CItems.LineItem.moveBy	(		self,
			dx,
			dy
	)

Disable line move

Definition at line 134 of file CItems.py.

  def moveBy(self,dx,dy):
    """Disable line move"""
    pass
 

selected()

def gui.CItems.LineItem.selected

(

self

)

The canvas item has been selected

Definition at line 172 of file CItems.py.

  def selected(self):
    """The canvas item has been selected"""
 

Referenced by gui.browser_catalog.Browser.handleBut1(), and gui.GraphViewer.GraphViewer.selectItem().

setArrow()

def gui.CItems.LineItem.setArrow

(

self

)

Definition at line 138 of file CItems.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.
    l,e=6,3 
    pa=QPointArray(3)
    pa.setPoint(0, QPoint(x+l*cosa,y+l*sina))
    pa.setPoint(1, QPoint(x-e*sina,y+e*cosa))
    pa.setPoint(2, QPoint(x+e*sina,y-e*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.CItems.LineItem.setFromPoint	(		self,
			x,
			y
	)

Definition at line 128 of file CItems.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.CItems.LineItem.setToPoint	(		self,
			x,
			y
	)

Definition at line 131 of file CItems.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().

Member Data Documentation

arrow

gui.CItems.LineItem.arrow

Definition at line 123 of file CItems.py.

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

fromPoint

gui.CItems.LineItem.fromPoint

To remove from canvas

Definition at line 116 of file CItems.py.

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

item

gui.CItems.LineItem.item

Definition at line 115 of file CItems.py.

Referenced by gui.Items.ControlLinksItem.getChildren(), gui.Items.DataLinksItem.getChildren(), gui.panels.PanelScript.handleCancel(), gui.panels.PanelFunc.handleCancel(), gui.panels.PanelInPort.handleRestore(), gui.panels.PanelOutPort.handleRestore(), gui.panels.PanelScript.handleSave(), gui.panels.PanelFunc.handleSave(), gui.panels.PanelInPort.handleSave(), gui.Tree.Node.setOpen(), and gui.Tree.Node.setOpen_old().

obj

gui.CItems.LineItem.obj

Definition at line 114 of file CItems.py.

Referenced by gui.CItems.PointItem.clear(), gui.CItems.LineItem.clear(), gui.CItems.TextItem.getObj(), gui.CItems.PointItem.getObj(), gui.CItems.LineItem.getObj(), gui.CItems.PointItem.handleDoubleClick(), gui.CItems.LineItem.handleDoubleClick(), gui.CItems.TextItem.moveBy(), and gui.CItems.TextItem.selected().

toPoint

gui.CItems.LineItem.toPoint

Definition at line 117 of file CItems.py.

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

---

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

• src/pyqt/gui/CItems.py