cloned from 'bitbucket', 2013/08/13

1 files changed, 97 insertions, 0 deletions

diff --git a/97suifangqa/apps/profile/image.py b/97suifangqa/apps/profile/image.py
new file mode 100644
index 0000000..b5dd550
--- /dev/null
+++ b/97suifangqa/apps/profile/image.py
@@ -0,0 +1,97 @@
+# -*- coding: utf-8 -*-
+"""
+	图片处理函数
+"""
+import os
+import time
+
+from hashlib import md5
+from django.conf import settings
+from os import mkdir, path as _path
+
+try:
+	from PIL import Image, ImageOps, ImageDraw
+except:
+	import Image, ImageOps, ImageDraw
+
+
+def rm_avatar_thumb(object_id, avatar_link):
+	name, ext = _path.splitext(avatar_link)
+	try:
+		fn = generat_location(object_id, ext, 200)
+		os.remove(fn)
+	except:
+		pass
+	
+
+def _mkdir(dirname):
+	"""
+		遍历创建文件夹
+	"""
+	index = []
+	initial = 0
+	for i in range(dirname.count('/')):
+		initial = dirname.find('/', initial, len(dirname))
+		index.insert(len(index), initial)
+		initial += 1
+	for j in index[1:]:
+		_dir = dirname[:j]
+		if _dir and not _path.exists(_dir):
+			mkdir(_dir)
+
+
+def generat_dir_and_fn(uid, flag):
+	root = settings.MEDIA_ROOT
+	fn = md5('%s' % uid).hexdigest()
+	d1 = fn[-2:]
+	d2 = fn[-4:-2]
+	dirname = "%s%s/%s/%s/" % (root, flag, d1, d2)
+	return dirname, fn
+
+
+def generat_location(uid, ext, size, flag):
+	"""
+		获取文件路径
+	"""
+	fmt = "%s%s_%s%s"
+	dirname, fn = generat_dir_and_fn(uid, flag)
+	_mkdir(dirname)
+	if not ext or \
+		ext == '.':
+		ext = '.jpg'
+	return fmt % (dirname, fn, size, ext)
+
+
+def crop(image, object_id, size=100, mask_img=None, flag="cache", **kwargs):
+	"""
+		截取图片
+	"""
+	_size = (size, size)
+	path = image.path
+	root, filename = _path.split(path)
+	name, ext = _path.splitext(filename)
+
+	original = Image.open(open(path, 'rb'))
+
+	# 保存为圆形缩略图
+	"""
+	mask = Image.new('L', _size, 0)
+	draw = ImageDraw.Draw(mask) 
+	draw.ellipse((0, 0) + _size, fill=255)
+	thumb = ImageOps.fit(original, mask.size, centering=(0.5, 0.5))
+	thumb.putalpha(mask)
+	"""
+	try:
+		if mask_img:
+			mask = Image.open(mask_img).convert('L')
+			thumb = ImageOps.fit(original, _size, centering=(0.5, 0.5))
+			thumb.putalpha(mask)
+		else: thumb = ImageOps.fit(original, _size, Image.ANTIALIAS)
+		
+		thumb_path = generat_location(object_id, ext, size, flag)
+		if not _path.exists(thumb_path):
+			thumb.save(thumb_path)
+	except:
+		thumb_path = path
+		
+	return thumb_path.replace(settings.MEDIA_ROOT, settings.MEDIA_URL)
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