from pytk2 import *

class NewApp(App):
  def __init__(self,root,sizeX,sizeY,title):
    App.__init__(self,root,sizeX,sizeY,title)

  def Run(self):
    self.graph = NewGraph(self.root,self.sizeX,self.sizeY)
    menu = GrMenu(self.root,self.graph)
    self.graph.Run()

class NewGraph(Graph):
  def __init__(self,root,maxX,maxY):
    Graph.__init__(self,root,maxX,maxY)

  def Run(self):
    self.lastX,self.lastY = 0,0
    self.canv.tag_bind('point','<1>',self.plotDown)
    self.canv.tag_bind('point','Button-Release-1',self.bindRelease)
    self.canv.tag_bind('point','<B1-Motion>',self.plotMove)
    
  def bindRelease(self,event):
    self.canv.drag('selected')
    
  def plotDown(self,event):
    self.canv.dtag('selected')
    self.canv.addtag_withtag('selected','current')
    self.canv.tag_raise('current')
    self.lastX,self.lastY = event.x,event.y
    
  def plotMove(self,event):
    self.canv.move('selected',event.x-self.lastX,event.y-self.lastY)
    self.lastX,self.lastY = event.x,event.y