wxPython/samples/wxPIA_book/Chapter-12/draw_image.py

   1 # This one shows how to draw images on a DC.
   2
   3 import wx
   4 import random
   5 random.seed()
   6
   7 class RandomImagePlacementWindow(wx.Window):
   8     def __init__(self, parent, image):
   9         wx.Window.__init__(self, parent)
  10         self.photo = image.ConvertToBitmap()
  11
  12         # choose some random positions to draw the image at:
  13         self.positions = [(10,10)]
  14         for x in range(50):
  15             x = random.randint(0, 1000)
  16             y = random.randint(0, 1000)
  17             self.positions.append( (x,y) )
  18
  19         # Bind the Paint event
  20         self.Bind(wx.EVT_PAINT, self.OnPaint)
  21
  22
  23     def OnPaint(self, evt):
  24         # create and clear the DC
  25         dc = wx.PaintDC(self)
  26         brush = wx.Brush("sky blue")
  27         dc.SetBackground(brush)
  28         dc.Clear()
  29
  30         # draw the image in random locations
  31         for x,y in self.positions:
  32             dc.DrawBitmap(self.photo, x, y, True)
  33
  34
  35 class TestFrame(wx.Frame):
  36     def __init__(self):
  37         wx.Frame.__init__(self, None, title="Loading Images",
  38                           size=(640,480))
  39         img = wx.Image("masked-portrait.png")
  40         win = RandomImagePlacementWindow(self, img)
  41
  42
  43 app = wx.PySimpleApp()
  44 frm = TestFrame()
  45 frm.Show()
  46 app.MainLoop()