支持缩放(使用滚轮)和移动/平移(使用左键拖动)的基本机制如下: from tkinter import ALL, EventTypecanvas.bind("<MouseWheel>", do_zoom)canvas.bind('<ButtonPress-1>', lambdaevent:canvas.scan_mark(event.x,event.y))canvas.bind("<B1-Motion>", lambdaevent:canvas.scan_dragto(event.x,event.y, ga...
现在,开始重写SelectedCanvas。 SelectedCanvas原型 根据archmage199 的文章,我们可以得到SelectedCanvas的原型: from tkinter import Canvas from functools import partial class SelectedCanvas(Canvas): def __init__(self, master=None, cnf={}, **kw): Canvas.__init__(self, master, cnf, **kw) self.is_...
from tkinter import * trace = False class CanvasEventsDemo: definit(self, parent=None): canvas = Canvas(width=300, height=300, bg='beige') canvas.pack() canvas.bind('<ButtonPress-1>', self.onStart) # click canvas.bind('<B1-Motion>', self.onGrow) # and drag canvas.bind('<Double-...
下面是一个示例代码,使用 Tkinter 库创建一个简单的自由拖动的画布。 importtkinterastkclassDraggableCanvas(tk.Canvas):def__init__(self,*args,**kwargs):super().__init__(*args,**kwargs)self.drag_data={"item":None,"start_x":0,"start_y":0}self.bind("<ButtonPress-1>",self.start_drag)s...
Can anyone tell me how to make the Tkinter Canvas widget draggable ? from tkinter import * root = Tk() c = Canvas(root) t = RawTurtle(c) ...# What can i do to have a drag function root.mainloop() python canvas tkinter drag Share Improve this question Follow asked Jul 15, 2016...
方法/步骤 1 canvas其实就是画布，是各种图形的载体。比如，下面的代码创建了一个绿色的画布：from tkinter import *root = Tk()cv = Canvas(root,bg = 'green')cv.pack()root.mainloop()2 在画布里面画一个矩形：cv.create_rectangle(10,20,365,200)注意此时，这个矩形左上角的坐标是(10,20)...
tkinter库Canvas操作三个实例 实例一:涂鸦 import tkinter as tkimport pyautogui as agfrom time import sleepdef paint(event):x1, y1 = (event.x - 1), (event.y - 1)x2, y2 = (event.x + 1), (event.y + 1)tCanvas.create_oval(x1, y1, x2, y2, fill = "black")def moveRect(w...
canvas.create_line(0, 0, event.x, event.y) root=tk.Tk() canvas= tk.Canvas(root, width=300, height=300) canvas.bind("<Button-1>", draw_line) canvas.pack() root.mainloop() 9、为Text组件(文本框)绑定回调函数 importtkinter as tkdefcount_characters(event): ...
Python Tkinter 画布(Canvas)组件和 html5 中的画布一样,都是用来绘图的。您可以将图形,文本,小部件或框架放置在画布上。 语法 语法格式如下: w=Canvas(master,option=value,...) master: 按钮的父容器。 options: 可选项,即该按钮的可设置的属性。这些选项可以用键 = 值的形式设置,并以逗号分隔。
from tkinter import * trace = False class CanvasEventsDemo: def init(self, parent=None): canvas = Canvas(width=300, height=300, bg='beige') canvas.pack() canvas.bind('<ButtonPress-1>', self.onStart) # click canvas.bind('<B1-Motion>', self.onGrow) # and drag canvas.bind('<Double...