py 生成缩略图.md

#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""
生成缩略图
注意安装第三方包，python3.0以上
"""
import os
from PIL import Image
import tkinter
import tkinter.filedialog
import tkinter.messagebox


class Window:
    def __init__(self):
        self.root = root = tkinter.Tk()
        self.Image = tkinter.StringVar()
        self.status = tkinter.StringVar()
        self.mstatus = tkinter.IntVar()
        self.fstatus = tkinter.IntVar()
        self.Image.set('bmp')
        self.mstatus.set(0)
        self.fstatus.set(0)
        label = tkinter.Label(root, text='输入百分比')
        label.place(x=5, y=5)
        self.entryNew = tkinter.Entry(root)
        self.entryNew.place(x=70, y=5)
        self.checkM = tkinter.Checkbutton(root, text='批量转换', command=self.OnCheckM,
                                          variable=self.mstatus, onvalue=1, offvalue=0)
        self.checkM.place(x=5, y=30)
        label = tkinter.Label(root, text='选择文件')
        label.place(x=5, y=55)
        self.entryFile = tkinter.Entry(root)
        self.entryFile.place(x=60, y=55)
        self.buttonBrowserFile = tkinter.Button(root, text='浏览', command=self.BrowserFile)
        self.buttonBrowserFile.place(x=200, y=55)
        label = tkinter.Label(root, text='选择目录')
        label.place(x=5, y=80)
        self.entryDir = tkinter.Entry(root, state=tkinter.DISABLED)
        self.entryDir.place(x=60, y=80)
        self.buttonBrowserDir = tkinter.Button(root, text='浏览', command=self.BrowserDir, state=tkinter.DISABLED)
        self.buttonBrowserDir.place(x=200, y=80)

        self.checkF = tkinter.Checkbutton(root, text='改变文件格式', command=self.OnCheckF,
                                          variable=self.fstatus, onvalue=1, offvalue=0)
        self.checkF.place(x=5, y=110)
        frame = tkinter.Frame(root)
        frame.place(x=10, y=130)
        labelTo = tkinter.Label(frame, text='To')
        labelTo.pack(anchor='w')
        self.rBmp = tkinter.Radiobutton(frame, variable=self.Image, value='bmp', text='BMP', state=tkinter.DISABLED)
        self.rBmp.pack(anchor='w')
        self.rJpg = tkinter.Radiobutton(frame, variable=self.Image, value='jpg', text='JPG', state=tkinter.DISABLED)
        self.rJpg.pack(anchor='w')
        self.rGif = tkinter.Radiobutton(frame, variable=self.Image, value='gif', text='GIF', state=tkinter.DISABLED)
        self.rGif.pack(anchor='w')
        self.rPng = tkinter.Radiobutton(frame, variable=self.Image, value='png', text='PNG', state=tkinter.DISABLED)
        self.rPng.pack(anchor='w')
        self.buttonConv = tkinter.Button(root, text='转换', command=self.Conv)
        self.buttonConv.place(x=100, y=175)
        self.labelStatus = tkinter.Label(root, textvariable=self.status)
        self.labelStatus.place(x=80, y=205)

    def MainLoop(self):
        self.root.minsize(250, 270)
        self.root.maxsize(250, 270)
        self.root.mainloop()

    def BrowserDir(self):
        directory = tkinter.filedialog.askdirectory(title='Python')
        if directory:
            self.entryDir.delete(0, tkinter.END)
            self.entryDir.insert(tkinter.END, directory)

    def BrowserFile(self):
        file = tkinter.filedialog.askopenfilename(title='Python Music Player',
                                                  filetypes=[('JPG', '*.jpg'), ('BMP', '*.bmp'),
                                                             ('GIF', '*.gif'), ('PNG', '*.png')])
        if file:
            self.entryFile.delete(0, tkinter.END)
            self.entryFile.insert(tkinter.END, file)

    def OnCheckM(self):
        if not self.mstatus.get():
            self.entryDir.config(state=tkinter.DISABLED)
            self.entryFile.config(state=tkinter.NORMAL)
            self.buttonBrowserDir.config(state=tkinter.DISABLED)
            self.buttonBrowserFile.config(state=tkinter.NORMAL)
        else:
            self.entryDir.config(state=tkinter.NORMAL)
            self.entryFile.config(state=tkinter.DISABLED)
            self.buttonBrowserDir.config(state=tkinter.NORMAL)
            self.buttonBrowserFile.config(state=tkinter.DISABLED)

    def OnCheckF(self):
        if not self.fstatus.get():
            self.rBmp.config(state=tkinter.DISABLED)
            self.rJpg.config(state=tkinter.DISABLED)
            self.rGif.config(state=tkinter.DISABLED)
            self.rPng.config(state=tkinter.DISABLED)
        else:
            self.rBmp.config(state=tkinter.NORMAL)
            self.rJpg.config(state=tkinter.NORMAL)
            self.rGif.config(state=tkinter.NORMAL)
            self.rPng.config(state=tkinter.NORMAL)

    def Conv(self):
        n = 0
        if self.mstatus.get():
            path = self.entryDir.get()
            if path == '':
                tkinter.messagebox.showerror('Python tkinter', '请输入路径')
                return
            filenames = os.listdir(path)
            if self.fstatus.get():
                f = self.Image.get()
                for filename in filenames:
                    if filename[-3:] in ('bmp', 'jpg', 'gif', 'png'):
                        self.make(path + '/' + filename, f)
                        n = n + 1
            else:
                for filename in filenames:
                    if filename[-3:] in ('bmp', 'jpg', 'gif', 'png'):
                        self.make(path + '/' + filename)
                        n = n + 1
        else:
            file = self.entryFile.get()
            if file == '':
                tkinter.messagebox.showerror('Python tkinter', '请选择文件')
                return
            if self.fstatus.get():
                f = self.Image.get()
                self.make(file, f)
                n = n + 1
            else:
                self.make(file)
                n = n + 1
        self.status.set('成功转换%d图片' % n)

    def make(self, file, format=None):
        im = Image.open(file)
        mode = im.mode
        if mode not in ('L', 'RGB'):
            im = im.convert('RGB')
        width, height = im.size
        s = self.entryNew.get()
        if s == '':
            tkMessageBox.showerror('Python tkinter', '请输入百分比')
            return
        else:
            n = int(s)
        nwidth = int(width * n / 100)
        nheight = int(height * n / 100)
        thumb = im.resize((nwidth, nheight), Image.ANTIALIAS)
        if format:
            thumb.save(file[:(len(file) - 4)] + '_thumb.' + format)
        else:
            thumb.save(file[:len(file) - 4] + '_thumb' + file[-4:])


window = Window()
window.MainLoop()