视觉长度截断函数
#长度的来源见附件中的html_visable_width=0, 24, 24, 24, 24, 24, 24, 24, 24, 0, 0, 0, 0, 0, 24,
24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
12, 12, 16, 28, 28, 44, 32, 8, 16, 16, 20, 28, 12, 16, 12, 12, 28, 28,
28, 28, 28, 28, 28, 28, 28, 28, 12, 12, 28, 28, 28, 28, 48, 28, 32,
36, 36, 32, 28, 36, 36, 12, 24, 32, 28, 36, 36, 36, 32, 36, 36, 32,
28, 36, 28, 44, 28, 28, 28, 12, 12, 12, 20, 28, 16, 28, 28, 24, 28,
28, 12, 28, 28, 12, 12, 24, 12, 44, 28, 28, 28, 28, 16, 28, 12, 28,
20, 36, 20, 20, 20, 16, 12, 16, 28, 24
#中文长48
def visable_length(word):
length=len(word)
width=0
i=0
while i<length:
c=word
if c>"\xE0" and c<="\xEF":
i+=3
width+=48
else:
if c<"\xC0":
i+=1
width+=_visable_width
else:
width+=48
if c<="\xDF":i+=2
elif c<="\xF7":i+=4
elif c<="\xFB":i+=5
else:i+=6
return width
def visable_cut(word,limit,etc="..."):
i=0
length=len(word)
if length<=limit:return word
limit = limit*48
width = 0
while i<length:
c=word
if c>"\xE0" and c<="\xEF":
offset=3
width+=48
else:
if c<"\xC0":
offset=1
width+=_visable_width
else:
width+=48
if c<="\xDF":offset=2
elif c<="\xF7":offset=4
elif c<="\xFB":offset=5
else:offset=6
if width>limit:
etc_length=(48+visable_length(etc))/48
return word[:i-etc_length]+etc
else:
i+=offset
return word
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