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| from PIL import Image, ImageDraw, ImageFont | |
| # get an image | |
| base = Image.open('Pillow/Tests/images/lena.png').convert('RGBA') | |
| # make a blank image for the text | |
| txt = Image.new('RGBA', base.size) | |
| # get a font | |
| fnt = ImageFont.truetype('Pillow/Tests/fonts/FreeMono.ttf', 40) | |
| d = ImageDraw.Draw(txt) # drawing context | |
| # draw text, half opacity | |
| d.text((10,10), "Hello", font=fnt, fill=(255,255,255,128)) | |
| # draw text, full opacity | |
| d.text((10,60), "World", font=fnt, fill=(255,255,255,255)) | |
| out = Image.alpha_composite(base, txt) | |
| out.show() |
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In this version, the fill parameter is a 4-tuple, of (R,G,B,A). The txt image is now an RGBA so there's a place for the alpha parameter to land.
So, we're actually drawing the text with the alpha that we want to use when compositing it in. ImageDraw.text doesn't do alpha composite, it only blats in the bits, so we have to do that step ourselves.