Abhi Abhi - 5 months ago 24
Python Question

PIL: add a text at the bottom middle of image

I've width and height of the image.

img = Image.open(img_src)
width, height = img.size

font = ImageFont.truetype("MuseoSansCyrl_0.otf", 100)
text_w, text_h = draw.textsize(title, font)


I'm trying to find a generic way to add a text to image at the bottom middle.

Here is the function I've wrote:

def process_img(img_src, title, background):

img = Image.open(img_src, 'r')
draw = ImageDraw.Draw(img)
w, h = img.size

font = ImageFont.truetype("MuseoSansCyrl_0.otf", 100)
text_w, text_h = draw.textsize(title, font)

draw.text((REQ_WIDTH, REQ_HEIGHT), title, (255,255,255), font=font)

img.save(img_src)

return img_src


Is there any way I can get the REQ_WIDTH and REQ_HEIGHT ?

Answer

You had already placed a call to draw.textsize, which returns you the Width and Height the final text will have - from that point, you just thave to calculate the top-left corner where to render your text like this:

Top will be your image_height - text_height, left will be your image_width/2 - text_width / 2 - thus, your rendering call becomes simply:

draw.text(((w - text_2) // 2, h - text_h), title, (255,255,255), font=font)

(Note that draw.text includes an optional "anchor" argument - but the possible values for it are not documented, nor the documentation states whether it is actually implemented. If it is implemented, and there is a value that represents (horizontal_center, bottom) as the Anchor, you should only have to pass the image_width / 2 and image_height, without needing to call draw.textsize)