SPLView11.py 文件源码

def __init__(self, N_onscreen=700,*args, **kwargs):
      ui.View.__init__(self,*args,**kwargs)
      # ready lock is used to protect calls to matplotlib
      self.ready=threading.Lock()
      #set up zoomable sliders
      self.hslider=ZoomSlider(frame=(self.width*0.08,0,self.width*0.84,self.height*0.08),vert=0,flex='wt')
      self.vslider=ZoomSlider(frame=(0,self.height*0.08,self.width*0.08,self.height*0.84),vert=1,flex='hr')
      self.add_subview(self.hslider)
      self.add_subview(self.vslider)
      self.hslider.barvalue=0.125
      self.hslider.barwidth=0.25
      self.vslider.barvalue=0.5
      self.vslider.barwidth=1.0
      self.hslider.action=self.did_slide
      self.vslider.action=self.did_slide
      #matplotlib image output
      self.img_view = ui.ImageView(frame=[self.width*0.08,self.height*0.08,self.width*0.84,self.height*0.84],flex='WH',bg_color=(1,1,1))
      self.add_subview(self.img_view)
      # image buffer
      self.b = io.BytesIO()

      #store base xlim and ylim, only update when drag ends
      self.xlim=plt.xlim()
      self.ylim=plt.ylim()
      self.N_onscreen=N_onscreen # number of points onscreen

      # fast and slow dpi..  set low_dpi to lower number for snappier response
      self.high_dpi=92
      self.low_dpi=16.
      self.device_dpi=72
      # set output image size to match view size.  this probably should be modified to use actual device dpi and size.  fonts and line width are based on pts, not pixels
      plt.gcf().set_size_inches(self.img_view.width/self.device_dpi,self.img_view.height/self.device_dpi)
      #update plot, ensuring update really happens
      #self.update_plt(dpi=self.high_dpi, waitForLock=True)

      #ObjCInstance(self).becomeFirstResponder()