[Image-SIG] TrueType/OpenType rendering bug in PIL 1.1.7?

[Edward Cannon]

I ran you code on my machine (win 7 Python 2.6.4, PIL 1.1.6) and after
changing the font names (they are different on my system) I got
similar problems, but not the same. I did notice that your image has
"fish & fhips" whereas mine says "fish & chips" Something seems to be
slightly off.
Hope that helps.
Edward Cannon

On Wed, Oct 6, 2010 at 3:01 PM, Anders Sandvig <anders.sandvig at gmail.com> wrote:
> I ran the following code in Python 2.6.1 with PIL 1.1.7 on Mac OS X 10.6.4:
>
> #!/usr/bin/python
> from PIL import Image, ImageDraw, ImageFont
>
> image = Image.new("RGB", (800, 600), (127, 127, 127))
> drawer = ImageDraw.Draw(image)
>
> fonts = ("Verdana Bold.ttf", "Verdana Bold Italic.ttf",
>         "Arial Bold.ttf", "Arial Bold Italic.ttf",
>         "AGaramondPro-Bold.otf", "AGaramondPro-BoldItalic.otf",
>         "Zapfino.ttf")
>
> x = 100
> y = 20
> for name in fonts:
>    font = ImageFont.truetype("/Library/Fonts/" + name, 32)
>    text = "fish & chips (%s)" % (name)
>    (w, h) = font.getsize(text)
>    drawer.rectangle([x, y, x + w, y + h], fill=(0, 170, 0))
>    drawer.text((x, y), text, font=font, fill=(255, 255, 255))
>    y += h + 20
>
> image.save("fontbug.png", "PNG")
>
> The result can be found here:
> http://files.looplabel.net/pil/fontbug.png
>
> As you can see, the last two fonts are rendered outside the expected
> box (as returned by ImageFont.getsize()).
>
> It's also odd how the ending first 'f' of the Garamond Bold Italic
> rendering is clipped to the left (compared to the second 'f' in the
> sentence), as is the ending parenthesis of the Arial Bold Italic
> rendering (clipped on the right, seemingly on the edge of the box
> calculated by ImageFont.getsize()).
>
> I am not sure which version of FreeType2 PIL is compiled against (PIL
> was compiled from source), but it's the version installed in
> /usr/X11/lib and /usr/X11/include on my system (i.e. whatever came
> with Mac OS X, I haven't installed any custom versions).
>
> I may be wrong, but as a naive user, I would expect ImageDraw.text()
> to draw inside the same area as returned by ImageFont.getsize(). I've
> also tried substituting ImageFont.getsize() for ImageDraw.textsize(),
> but the results are the same.
>
> So anyone have any clue on what's causing this and/or how to fix it?
>
> ... or maybe I'm just using the functions the wrong way?
>
> BTW: I get the same (unexpected) result when running on a Windows
> XP/Cygwin system (same versions of Python and PIL), compiled against
> whatever is the latest version of FreeType2 for Cygwin -- I can check
> when I access the Windows machine tomorrow.
>
>
> Regards,
>
> Anders
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