[英]Animated GIF with Python Turtle
我找到了一种使用 Python tkinter 显示动画 GIF 的方法,并且我正在尝试使其与 Python Turtle Graphics 一起使用。
我可以使用以下代码显示动画 gif,但存在问题。
1)由于某种原因, .grid(row=0, column=0)
将图像置于屏幕外。 2)图像有一个我不想显示的周围边框。
我用各种 arguments 尝试.place()
,但没有一个将图像放在屏幕上。
关于如何将图像放置在没有边框的特定 position 的任何建议?
# main file
import turtle
import tkinter_gif
screen = turtle.Screen()
canvas = screen.getcanvas()
gif_window = tkinter_gif.ImageLabel(canvas)
gif_window.grid(row=1, column=0)
gif_window.load("giphy.gif")
turtle.done()
# tkinter_gif.py
import tkinter as tk
from PIL import Image, ImageTk
from itertools import count
class ImageLabel(tk.Label):
"""a label that displays images, and plays them if they are gifs"""
def load(self, im):
if isinstance(im, str):
im = Image.open(im)
self.loc = 0
self.frames = []
try:
for i in count(1):
self.frames.append(ImageTk.PhotoImage(im.copy()))
im.seek(i)
except EOFError:
pass
try:
self.delay = im.info['duration']
except:
self.delay = 100
if len(self.frames) == 1:
self.config(image=self.frames[0])
else:
self.next_frame()
def unload(self):
self.config(image=None)
self.frames = None
def next_frame(self):
if self.frames:
self.loc += 1
self.loc %= len(self.frames)
self.config(image=self.frames[self.loc])
self.after(self.delay, self.next_frame)
我建议将ImageLabel
从tk.Label
更改为Canvas
的图像项,如下所示:
class ImageLabel:
def __init__(self, canvas):
self.canvas = canvas
def load(self, im, x=0, y=0):
# create a canvas image item
self.image = self.canvas.create_image(x, y, image=None)
self.canvas.tag_lower(self.image)
if isinstance(im, str):
im = Image.open(im)
self.frames = []
try:
for i in count(1):
self.frames.append(ImageTk.PhotoImage(im.copy()))
im.seek(i)
except EOFError:
pass
try:
self.delay = im.info['duration']
except:
self.delay = 100
num_frames = len(self.frames)
if num_frames == 1:
self.canvas.itemconfig(self.image, image=self.frames[0])
else:
self.next_frame(0, num_frames)
def unload(self):
self.canvas.delete(self.image)
self.frames = None
def next_frame(self, loc, total):
if self.frames:
self.canvas.itemconfig(self.image, image=self.frames[loc])
loc = (loc + 1) % total
self.canvas.after(self.delay, self.next_frame, loc, total)
然后在特定的 position 加载它:
gif_window = tkinter_gif.ImageLabel(canvas)
gif_window.load("giphy.gif", -200, -200) # 0, 0 is the center of canvas
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