lib/python/Components/Renderer/Canvas.py

   1 from Renderer import Renderer
   2
   3 from enigma import eCanvas, eRect, gRGB
   4
   5 class Canvas(Renderer):
   6         GUI_WIDGET = eCanvas
   7
   8         def __init__(self):
   9                 Renderer.__init__(self)
  10                 self.sequence = None
  11                 self.draw_count = 0
  12
  13         def pull_updates(self):
  14                 if self.instance is None:
  15                         return
  16
  17                 # do an incremental update
  18                 list = self.source.drawlist
  19                 if list is None:
  20                         return
  21
  22                 # if the lists sequence count changed, re-start from begin
  23                 if list[0] != self.sequence:
  24                         self.sequence = list[0]
  25                         self.draw_count = 0
  26
  27                 self.draw(list[1][self.draw_count:])
  28                 self.draw_count = len(list[1])
  29
  30         def draw(self, list):
  31                 for l in list:
  32                         print "drawing ..", l
  33                         self.instance.fillRect(eRect(l[1], l[2], l[3], l[4]), gRGB(l[5]))
  34
  35         def changed(self, what):
  36                 self.pull_updates()
  37
  38         def postWidgetCreate(self, instance):
  39                 self.sequence = None
  40                 self.pull_updates()