这里是我最终整理之后调整了文字间距之后的结果,并且又做了一个面向对面的Python类,这样看起来比较舒服。
字体需要到系统文件中去拷贝,参考:这是一个简单的例子
面向过程:
import os
from PIL import Image, ImageDraw, ImageFont
def add_text_to_image(image, text='测试文字', font='msyh.ttf', font_size=20, rotate=-45, alpha=50):
font = ImageFont.truetype(os.path.join('./', font), font_size)
# 添加背景
new_img = Image.new('RGBA', (image.size[0] * 3, image.size[1] * 3), (0, 0, 0, 0))
new_img.paste(image, image.size)
# 添加水印
font_len = len(text)
rgba_image = new_img.convert('RGBA')
text_overlay = Image.new('RGBA', rgba_image.size, (255, 255, 255, 0))
image_draw = ImageDraw.Draw(text_overlay)
# range step控制左右距离
for i in range(0, rgba_image.size[0], font_len * font_size + 10):
# range step控制上下距离
for j in range(0, rgba_image.size[1], int(((font_len * font_size) / 2) + 10)):
# rgba a(alpha)控制不透明百分比
image_draw.text((i, j), text, font=font, fill=(0, 0, 0, alpha))
# 水印文字旋转角度
text_overlay = text_overlay.rotate(rotate)
image_with_text = Image.alpha_composite(rgba_image, text_overlay)
# 裁切图片
image_with_text = image_with_text.crop((image.size[0], image.size[1], image.size[0] * 2, image.size[1] * 2))
image_with_text.save('./watermark_result.png')
if __name__ == '__main__':
img = Image.open("./test.jpg")
add_text_to_image(img, '测试使用')
面向对象:
import os
from PIL import Image, ImageDraw, ImageFont
class WaterMark:
def __init__(self, image='test.jpg', text='测试文字', font='msyh.ttf', font_size=20, rotate=-45, alpha=50, *args, **kwargs):
self.image = Image.open(os.path.join('.', image)) # 加水印本体图片
self.text = text # 水印文字
self.font = ImageFont.truetype(os.path.join('./', font), font_size) # 文字字体
self.font_size = font_size # 字体大小
self.rotate = rotate # 字体角度
self.alpha = alpha # 字体不透明度
self.new_img = None # 背景图
def create_background(self):
# 添加背景
self.new_img = Image.new('RGBA', (self.image.size[0] * 3, self.image.size[1] * 3), (0, 0, 0, 0))
self.new_img.paste(self.image, self.image.size)
def create_mark(self):
# 添加水印
font_len = len(self.text)
rgba_image = self.new_img.convert('RGBA')
text_overlay = Image.new('RGBA', rgba_image.size, (255, 255, 255, 0))
image_draw = ImageDraw.Draw(text_overlay)
# range step控制左右距离
for i in range(0, rgba_image.size[0], (font_len + 1) * self.font_size):
# range step控制上下距离
for j in range(0, rgba_image.size[1], int(((font_len + 1) * self.font_size) / 2)):
# rgba a(alpha)控制不透明百分比
image_draw.text((i, j), self.text, font=self.font, fill=(0, 0, 0, self.alpha))
# 水印文字旋转角度
text_overlay = text_overlay.rotate(self.rotate)
image_with_text = Image.alpha_composite(rgba_image, text_overlay)
# 裁切图片
image_with_text = image_with_text.crop((self.image.size[0], self.image.size[1], self.image.size[0] * 2,
self.image.size[1] * 2))
image_with_text.save('./{}.png'.format('watermark_result'))
def mark(self):
# 添加水印两步
self.create_background()
self.create_mark()
if __name__ == '__main__':
wm = WaterMark('test.jpg', '在线水印添加')
wm.mark()
水印结果: