将天气情况设置为桌面壁纸

概述将天气情况设置为桌面壁纸

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#!/usr/bin/env python# -*- Coding: utf-8 -*-##-------------------------------------------------------------------------------# name: 解析天气数据类## Author: Small White## Created: 2014-09-09## Python Tested: 3.4.1## dependency:# 1) Pillow# 2) pywin32 (e.g. Python for windows)# 3) win32-py3.4## Modification History:#-------------------------------------------------------------------------------from PIL import Image,ImageDraw,ImageEnhanceimport win32gui,win32con,win32APIimport osfrom WeatherReport34 import WeatherReportCWD = os.path.split(os.path.realpath(__file__))[0]def reduceOpacity(image,opacity):        """Returns an image with reduced opacity."""        assert opacity >= 0 and opacity <= 1        if image.mode != 'RGBA':            image = image.convert('RGBA')        Alpha = image.split()[3]        Alpha = ImageEnhance.Brightness(Alpha).enhance(opacity)        image.putAlpha(Alpha)        return imagedef adDWatermark(image,watermark,position,opacity=1):    """Adds a adDWatermark to an image."""    if opacity < 1:        watermark = reduceOpacity(watermark,opacity)    if image.mode != 'RGBA':        image = image.convert('RGBA')    # create a transparent layer the size of the image and draw the    # watermark in that layer.    layer = Image.new('RGBA',image.size,(0,0))    if position == 'tile':        for y in range(0,image.size[1],watermark.size[1]):            for x in range(0,image.size[0],watermark.size[0]):                layer.paste(watermark,(x,y))    elif position == 'scale':        # scale,but preserve the aspect ratio        ratio = min(            float(image.size[0]) / watermark.size[0],float(image.size[1]) / watermark.size[1])        w = int(watermark.size[0] * ratio)        h = int(watermark.size[1] * ratio)        watermark = watermark.resize((w,h))        layer.paste(watermark,((image.size[0] - w) / 2,(image.size[1] - h) / 2))    else:        layer.paste(watermark,position)    # composite the watermark with the layer    return Image.composite(layer,image,layer)    def setWallpaperFromBMP(imagepath,paperStyle = "TILE"):    """    Chage desktop background using the picture from the imagepath    """    # 平铺 (默认)    styleSetting = "1"    tileSetting = "1"    if paperStyle == "CENTER":# 0桌面居中        styleSetting = "0"        tileSetting = "0"    elif paperStyle == "STRETCH":# 2拉伸适应桌面        styleSetting = "2"        tileSetting = "0"            k = win32API.RegOpenKeyEx(win32con.HKEY_CURRENT_USER,"Control Panel\Desktop",win32con.KEY_SET_VALUE)    win32API.RegSetValueEx(k,"WallpaperStyle",win32con.REG_SZ,styleSetting)    win32API.RegSetValueEx(k,"TileWallpaper",tileSetting)    win32gui.SystemParametersInfo(win32con.SPI_SETDESKWALLPAPER,imagepath,1+2)def hasCrosslineBetweenBoxes(Box1,Box2):    return abs((Box1[0]+Box1[2])/2.0 - (Box2[0]+Box2[2])/2.0) <= ((Box1[2]+Box2[2]-Box1[0]-Box2[0])/2.0) and \           abs((Box1[1]+Box1[3])/2.0 - (Box2[1]+Box2[3])/2.0) <= ((Box1[3]+Box2[3]-Box1[1]-Box2[1])/2.0)if __name__ == "__main__":    screenWIDth = vscreenwIDth = win32API.GetSystemMetrics(win32con.SM_cxvIRTUALSCREEN)    screenHeight = vscreenheigth = win32API.GetSystemMetrics(win32con.SM_CYVIRTUALSCREEN)    vscreenx = win32API.GetSystemMetrics(win32con.SM_XVIRTUALSCREEN)    vscreeny = win32API.GetSystemMetrics(win32con.SM_YVIRTUALSCREEN)        '''    Returns only one monitor size,so we don't use them.    screenWIDth = win32API.GetSystemMetrics(win32con.SM_CXSCREEN)    screenHeight = win32API.GetSystemMetrics(win32con.SM_CYSCREEN)    '''        bgImage = Image.new('RGBA',(screenWIDth,screenHeight),color = 0)    bgImageDraw = ImageDraw.ImageDraw(bgImage)    weatherReport = WeatherReport()    weatherReportimage = weatherReport.getWeatherReportimage()        bgImage = adDWatermark(bgImage,weatherReportimage,(15,15),1)    weatherReportimage.close()       if bgImage.mode != 'RGB':        R,G,B,A = bgImage.split()        bgImage = Image.merge("RGB",(R,B))        bgImage.save(CWD + os.sep + "backgroud.bmp","BMP")    setWallpaperFromBMP(CWD + os.sep + "backgroud.bmp")    bgImage.close()

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