【发布时间】：2018-08-30 15:17:57
【问题描述】：
我正在使用 tkinter 和 PIL 来制作基本的照片查看器（主要用于学习目的）。我制作了放大、缩小、旋转（左右）和移动（上、下、左右）的按钮。我正在使用标签来显示图像。标签必须在放大时重新缩放和移动以适合图像。我目前的问题是，由于某种原因，在放大或缩小时，我会在一瞬间将图像的闪光放在错误的位置。这是它的一些图片：
编辑：我弄清楚了格式。这是我的整个脚本：
import tkinter as tk
from tkinter import ttk
from tkinter import filedialog
import PIL
from PIL import Image, ImageTk, ImageChops
import os
class PhotoApp:
def __init__(self):
#Make window
self.mainwindow = tk.Tk()
#Centers Window To Screen
self.screenwidth = self.mainwindow.winfo_screenwidth()
self.screenheight = self.mainwindow.winfo_screenheight()
self.place_width = str(int(self.screenwidth / 2 - 400))
self.place_height = str(int(self.screenheight / 2 - 329))
self.mainwindow.geometry("+" + self.place_width + "+" + self.place_height)
#Initial Window Setup
self.mainwindow.title("Photo Viewer")
self.mainwindow.iconbitmap("unitato.ico")
self.mainwindow.resizable(width=False, height=False)
#Variable Declaration
self.avariable = 1
self.photoindex = 0
self.currentphoto = ""
self.photofactor = 0
self.currentphotopath = ""
self.currentphotoready = ""
self.folderpath = ""
self.lastfolderpath = ""
self.photopath = ""
self.photolist = []
self.listspot = 0
self.cwd = "C:/Users/Aaron/Pictures"
self.rememberme = False
self.displayatx = 0
self.displayaty = 0
self.mouseup = True
self.currentrotation = 0
self.thecolor = self.colorcheck()
self.zoomlevel = 0
#Widget Layout
self.setup()
#Key Bindings
self.mainwindow.bind("<Up>", self.moveup)
#Initiates Main Loop
self.mainwindow.mainloop()
def setup(self):
print("Setup Begin")
b_border = 10
self.frame1 = tk.Frame(self.mainwindow)
self.frame1.pack(side=tk.TOP)
self.frame2 = tk.Frame(self.mainwindow)
self.frame2.pack(side=tk.TOP)
self.leftframe = tk.Frame(self.frame1, height=600, width=100,
bd=5, relief=tk.GROOVE)
self.leftframe.pack(side=tk.LEFT)
self.leftframe.pack_propagate(0)
self.rotaterightbutton = tk.Button(self.leftframe, text="Rotate ->",
font=("Arial", 12), command=self.rotateright)
self.rotaterightbutton.pack(side=tk.TOP, pady=10, fill=tk.X)
self.rotateleftbutton = tk.Button(self.leftframe, text="<- Rotate",
font=("Arial", 12), command=self.rotateleft)
self.rotateleftbutton.pack(side=tk.TOP, pady=10, fill=tk.X)
self.photoframe = tk.Frame(self.frame1, width=600, height=600)
self.photoframe.pack(side=tk.LEFT)
self.photoframe.pack_propagate(0)
self.rightframe = tk.Frame(self.frame1, height=600, width=100,
bd=5, relief=tk.GROOVE)
self.rightframe.pack(side=tk.LEFT)
self.rightframe.pack_propagate(0)
self.wipbutton = tk.Button(self.rightframe, text="WIP",
font=("Arial", 14), command=self.whatwip)
self.wipbutton.pack(side=tk.TOP, pady=10, fill=tk.X)
self.leftbutton = tk.Button(self.rightframe, text="[Left]",
font=("Arial", 14), command=self.moveleft)
self.leftbutton.pack(side=tk.TOP, pady=10, fill=tk.X)
self.rightbutton = tk.Button(self.rightframe, text="[Right]",
font=("Arial", 14), command=self.moveright)
self.rightbutton.pack(side=tk.TOP, pady=10, fill=tk.X)
self.upbutton = tk.Button(self.rightframe, text="[Up]",
font=("Arial", 14))#, command=self.moveup)
self.upbutton.pack(side=tk.TOP, pady=10, fill=tk.X)
self.upbutton.bind("<ButtonPress-1>", self.moveup)
self.downbutton = tk.Button(self.rightframe, text="[Down]",
font=("Arial", 14), command=self.movedown)
self.downbutton.pack(side=tk.TOP, pady=10, fill=tk.X)
self.photodisplay = tk.Label(self.photoframe, text="No Photo To Display",
font=("Arial", 14))
self.photodisplay.place(x=self.zoomsizing_frame()[2],
y=self.zoomsizing_frame()[3],
width=1000, height=1000)
self.bottomframe = tk.Frame(self.frame2, width=600, height=100, bd=5,
relief=tk.GROOVE)
self.bottomframe.pack(side=tk.TOP)
self.photoframe.pack_propagate(0)
self.previousbutton = tk.Button(self.bottomframe, text="Previous",
font=("Arial", 14), width=10,
command=self.previous)
self.previousbutton.pack(side=tk.LEFT, anchor=tk.W,
padx=b_border)
self.zoomout = tk.Button(self.bottomframe, text="(-)",
font=("Arial", 18), command=self.zoomout)
self.zoomout.pack(side=tk.LEFT, padx=b_border)
self.folderbutton = tk.Button(self.bottomframe, text="Folder Select",
font=("Arial", 14), width=15, command=self.folderselect)
self.folderbutton.pack(side=tk.LEFT, padx=b_border)
self.zoomin = tk.Button(self.bottomframe, text="(+)",
font=("Arial", 18), command=self.zoomin)
self.zoomin.pack(side=tk.LEFT, padx=b_border)
self.nextbutton = tk.Button(self.bottomframe, text="Next", font=(
"Arial", 14), width=10, command=self.next)
self.nextbutton.pack(side=tk.LEFT, padx=b_border)
print("Setup End")
def colorcheck(self):
color16 = self.mainwindow.winfo_rgb("systembuttonface")
color8List = []
for value in color16:
newvalue = value / 256
newvalue = int(newvalue)
color8List.append(newvalue)
print(value, newvalue, "\n", color8List)
rgbtuple = tuple(color8List)
return(rgbtuple)
def zoomsizing_photo(self):
resolution = [600, 600]
if self.zoomlevel == 0:
resolution = [600, 600]
elif self.zoomlevel == 1:
resolution = [1200, 1200]
elif self.zoomlevel == -1:
resolution = [300, 300]
else:
resolution = [600, 600]
return resolution
def zoomsizing_frame(self):
resandplace = [1000, 1000, -200, -200]
if self.zoomlevel == 0:
resolution = [1000, 1000, -200, -200]
elif self.zoomlevel == 1:
resolution = [2000, 2000, -700, -700]
elif self.zoomlevel == -1:
resolution = [500, 500, 50, 50]
else:
resolution = [1000, 1000, -200, -200]
return resolution
def zoomin(self):
self.zoomlevel = self.zoomlevel + 1
self.reloadphoto()
print(self.zoomlevel)
def zoomout(self):
self.zoomlevel = self.zoomlevel - 1
self.reloadphoto()
print(self.zoomlevel)
def next(self):
print("Next Begin")
self.displayatx = 0
self.displayaty = 0
self.zoomlevel = 0
self.currentrotation = 0
if self.currentphoto != None:
self.currentphoto.close()
self.currentphoto = None
if self.photoindex < len(self.photolist) - 1:
self.photoindex = self.photoindex + 1
else:
self.photoindex = 0
self.reloadphoto()
print("Next End")
def previous(self):
print("Previous Begin")
self.displayatx = 0
self.displayaty = 0
self.zoomlevel = 0
self.currentrotation = 0
if self.currentphoto != None:
self.currentphoto.close()
self.currentphoto = None
if self.photoindex == 0:
self.photoindex = len(self.photolist) - 1
else:
self.photoindex = self.photoindex - 1
self.reloadphoto()
print("Previous End")
def folderselect(self):
print("Folder Select Begin")
self.folderpath = filedialog.askdirectory(parent=self.mainwindow,
initialdir=self.cwd,
title="Choose A Folder To View Photos In.")
if self.folderpath != "":
self.lastfolderpath = self.folderpath
self.rememberme = False
else:
self.lastfolderpath = self.lastfolderpath
self.folderpath = self.lastfolderpath
self.rememberme = True
print(self.folderpath)
if self.folderpath != "" and self.rememberme == False:
print("Mark 1")
self.photolist = []
self.photoindex = 0
self.displayatx = 0
self.displayaty = 0
self.currentphotoready = None
self.cwd = self.folderpath
for name in os.listdir(self.folderpath):
if name.lower().endswith(".jpg") or name.lower().endswith(".png") or name.lower().endswith("tiff") or name.lower().endswith(".gif"):
self.photolist.append(name)
#print(self.photolist)
if self.photolist != []:
self.reloadphoto()
else:
self.photodisplay["image"]=""
self.photodisplay["text"]="No photos in this folder."
print(self.photodisplay["text"], self.photodisplay["image"])
else:
self.folderpath = self.lastfolderpath
if self.photolist != []:
self.reloadphoto()
else:
self.photodisplay["image"]=""
self.photodisplay["text"]="No photos in this folder."
print(self.photodisplay["text"], self.photodisplay["image"])
print("Folder Select End")
def loadphoto(self):
print("Load Photo Begin")
print(self.photoindex)
self.photodisplay["image"]=""
self.currentphotoready = ""
name = self.photolist[self.photoindex]
if name.lower().endswith(".gif"):
self.gifplayback()
else:
if self.folderpath != "":
self.currentphotopath = self.folderpath + "/" + str(self.photolist[self.photoindex])
self.currentphoto = Image.open(self.currentphotopath)
print("Load Photo End")
def reloadphoto(self):
self.loadphoto()
self.photoscale()
self.photorotate()
self.displayphoto()
def displayphoto(self):
print("Display Photo Begin")
self.photodisplay.place(width=self.zoomsizing_frame()[0], height=self.zoomsizing_frame()[1],
x=self.zoomsizing_frame()[2] + self.displayatx,
y=self.zoomsizing_frame()[3] + self.displayaty)
self.currentphotoready = ImageTk.PhotoImage(self.currentphoto)
self.photodisplay.config(image=self.currentphotoready)
print("Display Photo End")
def photoscale(self):
print("Photo Scale Begin")
print(self.currentphoto.width, self.currentphoto.height)
if self.currentphoto.width > self.currentphoto.height:
self.photofactor = self.currentphoto.width / self.zoomsizing_photo()[0]
else:
self.photofactor = self.currentphoto.height / self.zoomsizing_photo()[1]
#self.currentphoto = self.currentphoto.resize((int(self.currentphoto.width / self.photofactor),
#int(self.currentphoto.height / self.photofactor)), resample=0)
self.currentphoto.thumbnail((int(self.currentphoto.width / self.photofactor),
int(self.currentphoto.height / self.photofactor)), Image.ANTIALIAS)
print(self.currentphoto.width, self.currentphoto.height)
print("Photo Scale End")
def photorotate(self):
self.currentphoto = self.currentphoto.rotate(self.currentrotation, expand=True,
fillcolor=self.thecolor)
def gifplayback(self):
if self.currentphoto != "":
self.currentphoto.close()
self.photodisplay["image"]=""
self.photodisplay["text"]="Gif playback is not yet implemented. \n Please come back later.\n =)"
def whatwip(self):
if self.currentphoto != "":
self.currentphoto.close()
self.photodisplay["image"]=""
self.photodisplay["text"]=("""Gif playback \n \n Image rotation \n \n Slideshow mode \n \n Image Too Large Error (or ignore)
\n Zoom In \n \n Zoom Out \n \n Move Image With Mouse
\n Hold Down Mouse For Move""")
def moveleft(self):
print("moveleft")
if self.currentphoto != "":
self.displayatx = self.displayatx + 10
self.reloadphoto()
def moveright(self):
print("moveright")
if self.currentphoto != "":
self.displayatx = self.displayatx - 10
self.reloadphoto()
def moveup(self, key):
print("moveup")
if self.currentphoto != "":
self.displayaty = self.displayaty + 10
self.reloadphoto()
def movedown(self):
print("movedown")
if self.currentphoto != "":
self.displayaty = self.displayaty - 10
self.reloadphoto()
def rotateleft(self):
print("Rotate left")
if self.currentphoto != "":
self.currentrotation = self.currentrotation + 10
self.reloadphoto()
def rotateright(self):
print("Rotate right")
if self.currentphoto != "":
self.currentrotation = self.currentrotation - 10
self.reloadphoto()
def main():
program = PhotoApp()
if __name__ == "__main__":
main()
【问题讨论】：
-
您需要为您的问题添加足够多的代码以使其可运行并能够重现问题。见How to create a Minimal, Complete, and Verifiable Example。
标签： python python-3.x tkinter python-imaging-library