mirror of https://github.com/midoks/mdserver-web
pull/109/head
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#!/usr/bin/env python |
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# coding: utf-8 |
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# +------------------------------------------------------------------- |
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# | 宝塔Linux面板 |
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# +------------------------------------------------------------------- |
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# | Copyright (c) 2015-2099 宝塔(http://bt.cn) All rights reserved. |
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# +------------------------------------------------------------------- |
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# | Author: 黄文良 <287962566@qq.com> |
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# +------------------------------------------------------------------- |
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|
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import random, math |
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from PIL import Image, ImageDraw, ImageFont, ImageFilter |
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|
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class vieCode: |
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__fontSize = 20 #字体大小 |
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__width = 120 #画布宽度 |
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__heigth = 45 #画布高度 |
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__length = 4 #验证码长度 |
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__draw = None #画布 |
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__img = None #图片资源 |
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__code = None #验证码字符 |
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__str = None #自定义验证码字符集 |
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__inCurve = True #是否画干扰线 |
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__inNoise = True #是否画干扰点 |
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__type = 2 #验证码类型 1、纯字母 2、数字字母混合 |
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__fontPatn = 'class/fonts/2.ttf' #字体 |
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|
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def GetCodeImage(self,size = 80,length = 4): |
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'''获取验证码图片 |
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@param int size 验证码大小 |
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@param int length 验证码长度 |
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''' |
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#准备基础数据 |
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self.__length = length |
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self.__fontSize = size |
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self.__width = self.__fontSize * self.__length |
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self.__heigth = int(self.__fontSize * 1.5) |
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|
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#生成验证码图片 |
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self.__createCode() |
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self.__createImage() |
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self.__createNoise() |
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self.__printString() |
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self.__cerateFilter() |
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|
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return self.__img,self.__code |
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|
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def __cerateFilter(self): |
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'''模糊处理''' |
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self.__img = self.__img.filter(ImageFilter.BLUR) |
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filter = ImageFilter.ModeFilter(8) |
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self.__img = self.__img.filter(filter) |
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|
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def __createCode(self): |
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'''创建验证码字符''' |
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#是否自定义字符集合 |
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if not self.__str: |
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#源文本 |
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number = "3456789" |
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srcLetter = "qwertyuipasdfghjkzxcvbnmQWERTYUIOPASDFGHJKLZXCVBNM" |
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srcUpper = srcLetter.upper() |
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if self.__type == 1: |
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self.__str = number |
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else: |
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self.__str = srcLetter + srcUpper + number |
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|
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#构造验证码 |
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self.__code = random.sample(self.__str,self.__length) |
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|
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def __createImage(self): |
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'''创建画布''' |
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bgColor = (random.randint(200,255),random.randint(200,255),random.randint(200,255)) |
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self.__img = Image.new('RGB', (self.__width,self.__heigth), bgColor) |
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self.__draw = ImageDraw.Draw(self.__img) |
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|
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def __createNoise(self): |
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'''画干扰点''' |
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if not self.__inNoise: |
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return |
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font = ImageFont.truetype(self.__fontPatn, int(self.__fontSize / 1.5)) |
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for i in xrange(5): |
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#杂点颜色 |
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noiseColor = (random.randint(150,200), random.randint(150,200), random.randint(150,200)) |
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putStr = random.sample(self.__str,2) |
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for j in range(2): |
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#绘杂点 |
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size = (random.randint(-10,self.__width), random.randint(-10,self.__heigth)) |
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self.__draw.text(size,putStr[j], font=font,fill=noiseColor) |
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pass |
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|
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def __createCurve(self): |
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'''画干扰线''' |
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if not self.__inCurve: |
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return |
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x = y = 0; |
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|
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#计算曲线系数 |
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a = random.uniform(1, self.__heigth / 2) |
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b = random.uniform(-self.__width / 4, self.__heigth / 4) |
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f = random.uniform(-self.__heigth / 4, self.__heigth / 4) |
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t = random.uniform(self.__heigth, self.__width * 2) |
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xend = random.randint(self.__width / 2, self.__width * 2) |
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w = (2 * math.pi) / t |
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|
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#画曲线 |
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color = (random.randint(30, 150), random.randint(30, 150), random.randint(30, 150)) |
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for x in xrange(xend): |
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if w!=0: |
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for k in xrange(int(self.__heigth / 10)): |
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y = a * math.sin(w * x + f)+ b + self.__heigth / 2 |
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i = int(self.__fontSize / 5) |
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while i > 0: |
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px = x + i |
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py = y + i + k |
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self.__draw.point((px , py), color) |
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i -= i |
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def __printString(self): |
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'''打印验证码字符串''' |
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font = ImageFont.truetype(self.__fontPatn, self.__fontSize) |
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x = 0; |
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#打印字符到画板 |
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for i in xrange(self.__length): |
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#设置字体随机颜色 |
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color = (random.randint(30, 150), random.randint(30, 150), random.randint(30, 150)) |
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#计算座标 |
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x = random.uniform(self.__fontSize*i*0.95,self.__fontSize*i*1.1); |
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y = self.__fontSize * random.uniform(0.3,0.5); |
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#打印字符 |
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self.__draw.text((x, y),self.__code[i], font=font, fill=color) |
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