In a Python BeeWare project, I want to use the toga.Canvas to draw some horizontal rectangles but I don’t know from where to get the Canvas width. I can’t find any documentation of the toga.Canvas() dimensions on the internet…

  def redraw_canvas(self):
    x = 4; y = 4;  
    for i in range(7):  
      with self.canvas.context.Fill(color=self.clRowBkg) as fill:
        fill.rect(x, y, 100, self.row_height)
      y += self.row_height + 4