wxPython/tests/test_gcText.py

   1
   2 import wx
   3
   4 #----------------------------------------------------------------------
   5
   6
   7 class TestPanel(wx.Panel):
   8     def __init__(self, parent):
   9         wx.Panel.__init__(self, parent, -1)
  10         self.Bind(wx.EVT_PAINT, self.OnPaint)
  11
  12
  13     def OnPaint(self, evt):
  14         dc = wx.PaintDC(self)
  15         try:
  16             gc = wx.GraphicsContext.Create(dc)
  17         except NotImplementedError:
  18             dc.DrawText("This build of wxPython does not support the wx.GraphicsContext "
  19                         "family of classes.",
  20                         25, 25)
  21             return
  22
  23         font = wx.SystemSettings.GetFont(wx.SYS_DEFAULT_GUI_FONT)
  24         font.SetWeight(wx.BOLD)
  25         gc.SetFont(font)
  26
  27         gc.Translate(10, 10)
  28         self.DrawText(gc, 'normal')
  29
  30         gc.Translate(0, 25)
  31         gc.PushState()
  32         gc.Scale(2, 2)
  33         self.DrawText(gc, 'scaled')
  34         gc.PopState()
  35
  36         gc.Translate(0, 35)
  37         self.DrawText(gc, '\nnewline')
  38
  39     def DrawText(self, gc, txt):
  40         txt = "This is a test: " + txt
  41         w,h,d,e = gc.GetFullTextExtent(txt)
  42         ##print w,h,d,e
  43
  44         gc.DrawText(txt, 0, 0)
  45
  46         pen = wx.Pen("red", 1)
  47         gc.SetPen(pen)
  48
  49         path = gc.CreatePath()
  50         path.MoveToPoint(-1, -1)
  51         self.MakeCrosshair(path)
  52         gc.StrokePath(path)
  53
  54         path = gc.CreatePath()
  55         path.MoveToPoint(w+1, h+1)
  56         self.MakeCrosshair(path)
  57         gc.StrokePath(path)
  58
  59
  60
  61
  62     def MakeCrosshair(self, path):
  63         x, y = path.GetCurrentPoint()
  64         path.MoveToPoint(x-5, y)
  65         path.AddLineToPoint(x+5,y)
  66         path.MoveToPoint(x, y-5)
  67         path.AddLineToPoint(x, y+5)
  68         path.MoveToPoint(x,y)
  69
  70
  71
  72
  73 app = wx.App(False)
  74 frm = wx.Frame(None, title="Testing GC Text")
  75 pnl = TestPanel(frm)
  76 frm.Show()
  77 app.MainLoop()