projects / wxWidgets.git / blame
| Commit | Line | Data |
|---|---|---|
| cbfc9df6 RD |
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(w*SCALE, h*SCALE, 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 |