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Commit	Line	Data
	1	import wx
	2
	3	METHOD = 1
	4	SCALE = 0.5
	5
	6	class TestPanel(wx.Panel):
	7	"""
	8	Shows some ways to scale text down
	9	"""
	10	def __init__(self, args, *kw):
	11	wx.Panel.__init__(self, args, *kw)
	12	self.Bind(wx.EVT_PAINT, self.OnPaint)
	13
	14	def OnPaint(self, evt):
	15	pdc = wx.PaintDC(self)
	16	font = wx.FFont(28, wx.SWISS)
	17	pdc.SetFont(font)
	18	txt = "Here is some text"
	19
	20	# draw the original unscaled text
	21	pdc.DrawText(txt, 10, 10)
	22
	23	if METHOD == 0:
	24	# Create a new font that is scaled
	25	points = font.GetPointSize() * SCALE
	26	font.SetPointSize(points)
	27	pdc.SetFont(font)
	28	pdc.DrawText(txt, 10, 100)
	29
	30	if METHOD == 1:
	31	# Draw to a bitmap and scale that
	32	w,h = pdc.GetTextExtent(txt)
	33	bmp = wx.EmptyBitmap(w, h)
	34	mdc = wx.MemoryDC(bmp)
	35	mdc.SetBackground(wx.Brush(self.GetBackgroundColour()))
	36	mdc.Clear()
	37	mdc.SetFont(font)
	38	mdc.DrawText(txt, 0,0)
	39	del mdc
	40
	41	image = bmp.ConvertToImage()
	42	image = image.Scale(wSCALE, hSCALE, wx.IMAGE_QUALITY_HIGH)
	43	bmp = wx.BitmapFromImage(image)
	44	bmp.SetMaskColour(self.GetBackgroundColour())
	45
	46	pdc.DrawBitmap(bmp, 10,100)
	47
	48
	49	elif METHOD == 2:
	50	# Just scale the DC and draw the text again
	51	pdc.SetUserScale(SCALE, SCALE)
	52	pdc.DrawText(txt, 10/SCALE, 100/SCALE)
	53
	54
	55	elif METHOD == 3:
	56	# Use a GraphicsContext for scaling. Since it uses a
	57	# floating point coordinate system, it can be more
	58	# accurate.
	59	gc = wx.GraphicsContext.Create(pdc)
	60	gc.Scale(SCALE, SCALE)
	61	gc.SetFont(font)
	62	gc.DrawText(txt, 10/SCALE, 100/SCALE)
	63
	64
	65
	66	app = wx.App()
	67	frm = wx.Frame(None, title="test_scaleText")
	68	pnl = TestPanel(frm)
	69	frm.Show()
	70	app.MainLoop()
	71