python与tkinter结合写的简易相册预览(原创)

这两天一直在学习Tkinter,感觉其中的元件布局，有点复杂，不容易控制，因此，写了此例算作是练习一下了（其中用到了，Entry,  Button, listbox, canvas,scrollbar等等），有高手发现不准确之处，希望指点一二：）

python 代码

#!/usr/bin/env python

import os,sys,math
from glob import glob

from Tkinter import *
import Image
from ImageTk import PhotoImage
from tkFileDialog import askopenfilename,askdirectory
from tkMessageBox import showerror

class ViewPhotos(Frame):
    """all photos manage"""
    photodirs = ""
    savephotos = ""

    def __init__(self,parent=None,photo_dir=None):
        Frame.__init__(self,parent)
        self.pack(expand=YES,fill=BOTH)
        self.makeWidgets()

    def makeWidgets(self):
        """
        init button
        """
        frm = Frame(self,relief=SUNKEN)
        frm.pack(side=TOP,fill=X,padx=5)
        Label(frm,text=':)Browse Directory:').pack(side=LEFT)
        ent = Entry(frm,text='Type Your Directory or Press Browse Button',fg='blue')
        ent.pack(side=LEFT,expand=YES,fill=X)
        Button(frm,text='Browse...',command=self.onOpenDir).pack(side=LEFT)
        Button(frm,text='Quit',command=self.quit).pack(side=RIGHT)

        self.ent = ent

    def makeCanvas(self):
        """
        create content display area.
        """
        cont = Frame(self)
        cont.pack(side=TOP,expand=YES,fill=BOTH,pady=3)
        cont.config(relief=SUNKEN)
        lis = Listbox(cont)
        lis.pack(side=LEFT,fill=Y)
        can = Canvas(cont)
        can.config(width=300,height=200)
        sbar = Scrollbar(cont)
        sbar.config(command=can.yview)
        can.config(yscrollcommand=sbar.set)
        sbar.pack(side=RIGHT,fill=Y)
        can.pack(side=LEFT,expand=YES,fill=BOTH)

        #display photos
        imglist = [img for img in os.listdir(self.photodirs)]
        for img in imglist:
            lis.insert(END,img)

        lis.bind('<Double-Button-1>',self.viewOne)

        self.lis = lis
        self.can = can

    def viewOne(self,event):
        """one photo view"""
        try:
            index = self.lis.curselection()
            img = self.lis.get(index)
            imgpath = self.photodirs + '/' + img
            imgobj = PhotoImage(file=imgpath)
            #self.can.create_text(10,10,text=imgpath,font=('times',16,'bold'),fill='red')
            self.can.create_image(10,20,image=imgobj,anchor=NW)
            self.savephotos = imgobj
        except IOError:
            showerror('Photos',"This file isn't image.")
            pass
        return self.savephotos

    def onOpenDir(self):
        photodirs = askdirectory()
        if photodirs:
            if os.path.exists(photodirs):
                self.photodirs = photodirs
                #create display area.
                self.makeCanvas()
                self.ent.delete(0,END)
                self.ent.insert(0,photodirs)
            else:
                showerror('Photos','you have not browse directory!')


if __name__ == '__main__':
    root = Tk()
    root.geometry('800x600+50+50')
    view = ViewPhotos(root)
    root.mainloop()

补充一点：from  ImageTk import PhotoImage 这里的ImageTk 需要下载包(PIL)重新安装（http://www.pythonware.com）.

因为，Tkinter 中的PhotoImage()支持的图片格式比较少(gif,ppm,pgm),所以，如果需要处理其它格式的图片，就需要ImageTk哩.  它的PhotoImage()支持gif,jpeg,tiff,bmp等,处理常用的图片，够用了。。。 ^ _^