I try to add text at the bottom of image and actually I've done it, but in case of my text is longer then image width it is cut from both sides, to simplify I would like text to be in multiple lines if it is longer than image width. Here is my code:
FOREGROUND = (255, 255, 255)
WIDTH = 375
HEIGHT = 50
TEXT = 'Chyba najwyższy czas zadać to pytanie na śniadanie \n Chyba najwyższy czas zadać to pytanie na śniadanie'
font_path = '/Library/Fonts/Arial.ttf'
font = ImageFont.truetype(font_path, 14, encoding='unic')
text = TEXT.decode('utf-8')
(width, height) = font.getsize(text)
x = Image.open('media/converty/image.png')
y = ImageOps.expand(x,border=2,fill='white')
y = ImageOps.expand(y,border=30,fill='black')
w, h = y.size
bg = Image.new('RGBA', (w, 1000), "#000000")
W, H = bg.size
xo, yo = (W-w)/2, (H-h)/2
bg.paste(y, (xo, 0, xo+w, h))
draw = ImageDraw.Draw(bg)
draw.text(((w - width)/2, w), text, font=font, fill=FOREGROUND)
bg.show()
bg.save('media/converty/test.png')
You could use textwrap.wrap
to break text
into a list of strings, each at most width
characters long:
import textwrap
lines = textwrap.wrap(text, width=40)
y_text = h
for line in lines:
width, height = font.getsize(line)
draw.text(((w - width) / 2, y_text), line, font=font, fill=FOREGROUND)
y_text += height
The accepted answer wraps text without measuring the font (max 40 characters, no matter what the font size and box width is), so the results are only approximate and may easily overfill or underfill the box.
Here is a simple library which solves the problem correctly: https://gist.github.com/turicas/1455973
All recommendations about textwrap
usage fail to determine correct width for non-monospaced fonts (as Arial, used in topic example code).
I've wrote simple helper class to wrap text regarding to real font letters sizing:
class TextWrapper(object):
""" Helper class to wrap text in lines, based on given text, font
and max allowed line width.
"""
def __init__(self, text, font, max_width):
self.text = text
self.text_lines = [
' '.join([w.strip() for w in l.split(' ') if w])
for l in text.split('\n')
if l
]
self.font = font
self.max_width = max_width
self.draw = ImageDraw.Draw(
Image.new(
mode='RGB',
size=(100, 100)
)
)
self.space_width = self.draw.textsize(
text=' ',
font=self.font
)[0]
def get_text_width(self, text):
return self.draw.textsize(
text=text,
font=self.font
)[0]
def wrapped_text(self):
wrapped_lines = []
buf = []
buf_width = 0
for line in self.text_lines:
for word in line.split(' '):
word_width = self.get_text_width(word)
expected_width = word_width if not buf else \
buf_width + self.space_width + word_width
if expected_width <= self.max_width:
# word fits in line
buf_width = expected_width
buf.append(word)
else:
# word doesn't fit in line
wrapped_lines.append(' '.join(buf))
buf = [word]
buf_width = word_width
if buf:
wrapped_lines.append(' '.join(buf))
buf = []
buf_width = 0
return '\n'.join(wrapped_lines)
Example usage:
wrapper = TextWrapper(text, image_font_intance, 800)
wrapped_text = wrapper.wrapped_text()
It's probably not super-fast, because it renders whole text word by word, to determine words width. But for most cases it should be OK.
For a complete working example using unutbu's trick (tested with Python 3.6 and Pillow 5.3.0):
from PIL import Image, ImageDraw, ImageFont
import textwrap
def draw_multiple_line_text(image, text, font, text_color, text_start_height):
'''
From unutbu on [python PIL draw multiline text on image](https://stackoverflow.com/a/7698300/395857)
'''
draw = ImageDraw.Draw(image)
image_width, image_height = image.size
y_text = text_start_height
lines = textwrap.wrap(text, width=40)
for line in lines:
line_width, line_height = font.getsize(line)
draw.text(((image_width - line_width) / 2, y_text),
line, font=font, fill=text_color)
y_text += line_height
def main():
'''
Testing draw_multiple_line_text
'''
#image_width
image = Image.new('RGB', (800, 600), color = (0, 0, 0))
fontsize = 40 # starting font size
font = ImageFont.truetype("arial.ttf", fontsize)
text1 = "I try to add text at the bottom of image and actually I've done it, but in case of my text is longer then image width it is cut from both sides, to simplify I would like text to be in multiple lines if it is longer than image width."
text2 = "You could use textwrap.wrap to break text into a list of strings, each at most width characters long"
text_color = (200, 200, 200)
text_start_height = 0
draw_multiple_line_text(image, text1, font, text_color, text_start_height)
draw_multiple_line_text(image, text2, font, text_color, 400)
image.save('pil_text.png')
if __name__ == "__main__":
main()
#cProfile.run('main()') # if you want to do some profiling
Result:
text = textwrap.fill("test ",width=35)
self.draw.text((x, y), text, font=font, fill="Black")
You could use PIL.ImageDraw.Draw.multiline_text()
.
draw.multiline_text((WIDTH, HEIGHT), TEXT, fill=FOREGROUND, font=font)
You even set spacing
or align
using the same param names.
来源:https://stackoverflow.com/questions/7698231/python-pil-draw-multiline-text-on-image