{"id":14550,"date":"2022-10-08T06:38:41","date_gmt":"2022-10-08T01:08:41","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-stop-button-in-tkinter\/"},"modified":"2022-10-08T06:38:41","modified_gmt":"2022-10-08T01:08:41","slug":"solved-stop-button-in-tkinter","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-stop-button-in-tkinter\/","title":{"rendered":"[Solved] &#8220;Stop&#8221; Button in Tkinter"},"content":{"rendered":"<p> [ad_1]<br \/>\n<\/p>\n<div id=\"answer-53326328\" class=\"answer js-answer accepted-answer js-accepted-answer\" data-answerid=\"53326328\" data-parentid=\"53326052\" data-score=\"1\" data-position-on-page=\"1\" data-highest-scored=\"1\" data-question-has-accepted-highest-score=\"1\" itemprop=\"acceptedAnswer\" itemscope itemtype=\"https:\/\/schema.org\/Answer\">\n<div class=\"post-layout\">\n<div class=\"votecell post-layout--left\"><\/div>\n<div class=\"answercell post-layout--right\">\n<div class=\"s-prose js-post-body\" itemprop=\"text\">\n<p>You cannot stop each draw statement unless you provide a checker in between each line drawn.<\/p>\n<p>The below code is just a rough mock up of how you could make something to check for a tracking variable used to tell it to no longer draw new lines.<\/p>\n<p>The closest thing you can do to being able to stop drawing is something like this:<\/p>\n<pre><code>import turtle\nimport tkinter as tk\n\ndef start():\n    global tracker\n    tracker = False\n    if tracker == False:\n        t.forward(100)\n    if tracker == False:\n        t.right(90)\n    if tracker == False:\n        t.forward(100)\n    if tracker == False:\n        t.left(90)\n    if tracker == False:\n        t.forward(100)\n    if tracker == False:\n        t.right(90)\n    if tracker == False:\n        t.forward(100)\n    if tracker == False:\n        t.right(90)\n    if tracker == False:\n        t.forward(100)\n\n\ndef stop():\n    global tracker\n    tracker = True\n\ndef clear():\n    canvas.delete(\"all\")\n\nroot = tk.Tk()\ntracker = False\ncanvas = tk.Canvas(width = 500, height = 500)\ncanvas.pack()\n\nt = turtle.RawTurtle(canvas)\n\ntk.Button(text = \"Start\", command = start).pack(side = tk.LEFT)\ntk.Button(text = \"Stop\", command = stop).pack(side = tk.LEFT)\ntk.Button(text = \"Clear\", command = clear).pack(side = tk.LEFT)\n\nroot.mainloop()\n<\/code><\/pre>\n<p>This will at least stop drawing after each line but you cannot stop mid line draw.<\/p>\n<p>Just for the fun of it if we add some tracking variables and use some cleaner logic we can start, stop and start again.<\/p>\n<p>Update: From @cdlane&#8217;s comment below I have added addition tracking and updated the clear function. This should allow for start stop start without issues and also be able to clear the field.<\/p>\n<pre><code>import turtle\nimport tkinter as tk\n\ndef start(turtle_object, draw_path):\n    global tracker, start_ndex, end_ndex, started\n    tracker = False\n    if started == False:\n        started = True\n        for i in range(start_ndex, end_ndex):\n            if tracker == False and i &lt;= end_ndex:\n                pth = draw_path[i]\n                if pth[0] == \"f\":\n                    turtle_object.forward(pth[1])\n                elif pth[0] == \"r\":\n                    turtle_object.right(pth[1])\n                elif pth[0] == \"l\":\n                    turtle_object.left(pth[1])\n                start_ndex += 1\n\ndef stop():\n    global tracker, started\n    tracker = True\n    started = False\n\ndef clear():\n    global t, tracker, started, start_ndex\n    canvas.delete(\"all\")\n    tracker = False\n    start_ndex = 0\n    started = False\n    t = turtle.RawTurtle(canvas)\n\nroot = tk.Tk()\ntracker = False\nstart_ndex = 0\nstarted = False # added this tracking variable to prevent issues with spamming the start button.\n\ndraw_path = [[\"f\", 100], [\"r\", 90], [\"f\", 100], [\"l\", 90], [\"f\", 100], [\"r\", 90], [\"f\", 100], [\"r\", 90], [\"f\", 100]]\n\n\nend_ndex = len(draw_path)\n\ncanvas = tk.Canvas(width = 500, height = 500)\ncanvas.pack()\n\nt = turtle.RawTurtle(canvas)\ntk.Button(text = \"Start\", command = lambda: start(t, draw_path)).pack(side = tk.LEFT)\ntk.Button(text = \"Stop\", command = stop).pack(side = tk.LEFT)\ntk.Button(text = \"Clear\", command = clear).pack(side = tk.LEFT)\nroot.mainloop()\n<\/code><\/pre>\n<\/p><\/div>\n<div class=\"mt24\"><\/div>\n<\/div>\n<p>            <span class=\"d-none\" itemprop=\"commentCount\">8<\/span> <\/p><\/div>\n<\/div>\n<p>[ad_2]<\/p>\n<p>solved &#8220;Stop&#8221; Button in Tkinter <\/p>\n","protected":false},"excerpt":{"rendered":"<p>[ad_1] You cannot stop each draw statement unless you provide a checker in between each line drawn. The below code is just a rough mock up of how you could make something to check for a tracking variable used to tell it to no longer draw new lines. The closest thing you can do to &#8230; <a title=\"[Solved] &#8220;Stop&#8221; Button in Tkinter\" class=\"read-more\" href=\"https:\/\/jassweb.com\/solved\/solved-stop-button-in-tkinter\/\" aria-label=\"More on [Solved] &#8220;Stop&#8221; Button in Tkinter\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[320],"tags":[349,768,3628,1790],"class_list":["post-14550","post","type-post","status-publish","format-standard","hentry","category-solved","tag-python","tag-tkinter","tag-tkinter-canvas","tag-turtle-graphics"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>[Solved] &quot;Stop&quot; Button in Tkinter - JassWeb<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/jassweb.com\/solved\/solved-stop-button-in-tkinter\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] &quot;Stop&quot; Button in Tkinter - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] You cannot stop each draw statement unless you provide a checker in between each line drawn. 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