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fix size after resizing

--- a/sakura_imgswap.py

+++ b/sakura_imgswap.py

		@@ -67,7 +67,7 @@ def replace_img_tag(line, tagstr, path):
67	67	if 'width' in attrs:
68	68	(w, h) = _get_png_geom(path)
69	69	if int(w) > image_width:
70		- attrs['height'] = str(h * image_width / w)
	70	+ attrs['height'] = str(int(round(float(h) * float(image_width) / float(w))))
71	71	attrs['width'] = str(image_width)
72	72	filename = '''%s-%sx%s%s''' % (root, attrs['width'], attrs['height'], ext)
73	73	else:

--- a/wp_imgswap.py

+++ b/wp_imgswap.py

		@@ -34,14 +35,14 @@ except IndexError:
34	35	link_prefix = ""
35	36
36	37	try:
37		- max_image_width = int(sys.argv[5])
	38	+ max_image_width = float(sys.argv[5])
38	39	except IndexError:
39		- max_image_width = 480
	40	+ max_image_width = 480.0
40	41
41	42	try:
42		- max_image_height = int(sys.argv[6])
	43	+ max_image_height = float(sys.argv[6])
43	44	except IndexError:
44		- max_image_height = 640
	45	+ max_image_height = 640.0
45	46
46	47	def _get_png_geom(filepath):
47	48	s = filepath.split('.')

		@@ -80,15 +81,15 @@ def replace_img_tag(line, tagstr, path):
80	81	attrs['width'] = str(w)
81	82	else:
82	83	# use resized image
83		- new_w = int(w)
84		- new_h = int(h)
	84	+ new_w = float(w)
	85	+ new_h = float(h)
85	86	if new_w > max_image_width:
86		- new_h = h * max_image_width / w
87		- new_w = max_image_width
	87	+ new_h = int(math.floor(h * max_image_width / w))
	88	+ new_w = int(max_image_width)
88	89	print "replace width, %d %d" % (new_w, new_h)
89	90	if new_h > max_image_height:
90		- new_h = max_image_height
91		- new_w = w * max_image_height / h
	91	+ new_h = int(max_image_height)
	92	+ new_w = int(math.floor(w * max_image_height / h))
92	93	print "replace height, %d %d" % (new_w, new_h)
93	94	attrs['height'] = str(new_h)
94	95	attrs['width'] = str(new_w)