# -*- coding: UTF-8 -*- 

from __future__ import unicode_literals
import Image
import datetime
import win32gui,win32con,win32api
import re
from HttpWrapper import SendRequest

StoreFolder = "c:\\dayImage"

def setWallpaperFromBMP(imagepath):
  k = win32api.RegOpenKeyEx(win32con.HKEY_CURRENT_USER,"Control Panel\\Desktop",0,win32con.KEY_SET_VALUE)
  win32api.RegSetValueEx(k, "WallpaperStyle", 0, win32con.REG_SZ, "2") #2拉伸适应桌面,0桌面居中
  win32api.RegSetValueEx(k, "TileWallpaper", 0, win32con.REG_SZ, "0")
  win32gui.SystemParametersInfo(win32con.SPI_SETDESKWALLPAPER,imagepath, 1+2)

def setWallPaper(imagePath):
  """
  Given a path to an image, convert it to bmp and set it as wallpaper
  """
  bmpImage = Image.open(imagePath)
  newPath = StoreFolder + '\\mywallpaper.bmp'
  bmpImage.save(newPath, "BMP")
  setWallpaperFromBMP(newPath)

def getPicture():
  url = "http://photography.nationalgeographic.com/photography/photo-of-the-day/"
  h = SendRequest(url)
  if h.GetSource():
    r = re.findall('<div class="download_link"><a href="(.*">Download',h.GetSource())
    if r:
      return SendRequest(r[0]).GetSource()
    else:
      print "解析图片地址出错，请检查正则表达式是否正确"
      return None


def setWallpaperOfToday():
  img = getPicture()
  if img:
    path = StoreFolder + "\\%s.jpg" % datetime.date.today()
    f = open(path,"wb")
    f.write(img)
    f.close()
    setWallPaper(path)

setWallpaperOfToday()
print 'Wallpaper set ok!'

#!/usr/bin/env python 
# -*- coding: UTF-8 -*-
#-------------------------------------------------------------------------------
# Name: 对http访问的封装
#
# Author: qianlifeng
#
# Created: 10-02-2012
#-------------------------------------------------------------------------------

import base64
import urllib
import urllib2
import time
import re
import sys

class SendRequest:
 """
 网页请求增强类
 SendRequest('http://xxx.com',data=dict, type='POST', auth='base',user='xxx', password='xxx')
 """
 def __init__(self, url, data=None, method='GET', auth=None, user=None, password=None, cookie = None, **header):
  """
  url: 请求的url，不能为空
  date: 需要post的内容，必须是字典
  method: Get 或者 Post，默认为Get
  auth: 'base' 或者 'cookie'
  user: 用于base认证的用户名
  password: 用于base认证的密码
  cookie: 请求附带的cookie，一般用于登录后的认证
  其他头信息:
  e.g. referer='www.sina.com.cn'
  """

  self.url = url
  self.data = data
  self.method = method
  self.auth = auth
  self.user = user
  self.password = password
  self.cookie = cookie

  if 'referer' in header:
    self.referer = header[referer]
  else:
    self.referer = None

  if 'user-agent' in header:
    self.user_agent = header[user-agent]
  else:
## self.user_agent = 'Mozilla/5.0 (Windows NT 5.1; rv:8.0) Gecko/20100101 Firefox/8.0'
    self.user_agent = 'Mozilla/5.0 (iPhone; U; CPU iPhone OS 3_0 like Mac OS X; en-us) AppleWebKit/528.18 (KHTML, like Gecko) Version/4.0 Mobile/7A341 Safari/528.16'

  self.__SetupRequest()
  self.__SendRequest()

 def __SetupRequest(self):

  if self.url is None or self.url == '':
    raise 'url 不能为空!'

  #访问方式设置
  if self.method.lower() == 'post':
    self.Req = urllib2.Request(self.url, urllib.urlencode(self.data))

  elif self.method.lower() == 'get':
    if self.data == None:
      self.Req = urllib2.Request(self.url)
    else:
      self.Req = urllib2.Request(self.url + '"Authorization", auth_info)

  elif self.auth == 'cookie':
    if self.cookie == None:
      raise 'The cookie was not given!'
    else:
      self.Req.add_header("Cookie", self.cookie)


  if self.referer:
    self.Req.add_header('referer', self.referer)
  if self.user_agent:
    self.Req.add_header('user-agent', self.user_agent)


 def __SendRequest(self):

  try:
   self.Res = urllib2.urlopen(self.Req)
   self.source = self.Res.read()
   self.code = self.Res.getcode()
   self.head_dict = self.Res.info().dict
   self.Res.close()
  except:
   print "Error: HttpWrapper=>_SendRequest ", sys.exc_info()[1]


 def GetResponseCode(self):
  """
  得到服务器返回的状态码(200表示成功,404网页不存在)
  """
  return self.code

 def GetSource(self):
  """
  得到网页源代码，需要解码后在使用
  """
  if "source" in dir(self):
    return self.source
  return u''

 def GetHeaderInfo(self):
  """
  u'得到响应头信息'
  """
  return self.head_dict

 def GetCookie(self):
  """
  得到服务器返回的Cookie，一般用于登录后续操作
  """
  if 'set-cookie' in self.head_dict:
   return self.head_dict['set-cookie']
  else:
   return None

 def GetContentType(self):
  """
  得到返回类型
  """
  if 'content-type' in self.head_dict:
   return self.head_dict['content-type']
  else:
   return None

 def GetCharset(self):
  """
  尝试得到网页的编码
  如果得不到返回None
  """
  contentType = self.GetContentType()
  if contentType is not None:
    index = contentType.find("charset")
    if index > 0:
      return contentType[index+8:]
  return None

 def GetExpiresTime(self):
  """
  得到网页过期时间
  """
  if 'expires' in self.head_dict:
   return self.head_dict['expires']
  else:
   return None

 def GetServerName(self):
  """
  得到服务器名字
  """
  if 'server' in self.head_dict:
   return self.head_dict['server']
  else:
   return None

__all__ = [SendRequest,]

if __name__ == '__main__':
  b = SendRequest("http://www.baidu.com")
  print b.GetSource()