{"id":967035,"date":"2024-12-27T04:53:19","date_gmt":"2024-12-26T20:53:19","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/967035.html"},"modified":"2024-12-27T04:53:21","modified_gmt":"2024-12-26T20:53:21","slug":"python-canvas%e5%a6%82%e4%bd%95%e9%87%8d%e7%bb%98","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/967035.html","title":{"rendered":"python canvas\u5982\u4f55\u91cd\u7ed8"},"content":{"rendered":"

\"python<\/p>\n

\u5728Python\u4e2d\uff0c\u4f7f\u7528Canvas\u8fdb\u884c\u91cd\u7ed8\u53ef\u4ee5\u901a\u8fc7\u6e05\u9664\u753b\u5e03\u3001\u66f4\u65b0\u56fe\u5f62\u5bf9\u8c61\u3001\u4f7f\u7528after()<\/code>\u65b9\u6cd5\u8fdb\u884c\u5468\u671f\u6027\u66f4\u65b0\u7b49\u65b9\u5f0f\u5b9e\u73b0\u3002\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u5c06\u8be6\u7ec6\u63a2\u8ba8\u5982\u4f55\u901a\u8fc7\u8fd9\u4e9b\u65b9\u6cd5\u5b9e\u73b0Canvas\u7684\u91cd\u7ed8\u3002<\/strong><\/p>\n<\/p>\n

\u4e00\u3001\u6e05\u9664\u753b\u5e03<\/p>\n<\/p>\n

\u5728\u8fdb\u884c\u91cd\u7ed8\u4e4b\u524d\uff0c\u901a\u5e38\u9700\u8981\u6e05\u9664\u753b\u5e03\u4e0a\u7684\u5185\u5bb9\u3002\u53ef\u4ee5\u4f7f\u7528Canvas\u7684delete()<\/code>\u65b9\u6cd5\u6765\u5b9e\u73b0\u8fd9\u4e00\u70b9\u3002delete("all")<\/code>\u53ef\u4ee5\u6e05\u9664\u753b\u5e03\u4e0a\u7684\u6240\u6709\u5185\u5bb9\uff0c\u800cdelete(tag)<\/code>\u5219\u53ef\u4ee5\u6e05\u9664\u5177\u6709\u7279\u5b9a\u6807\u8bb0\u7684\u5bf9\u8c61\u3002<\/p>\n<\/p>\n

\u4f7f\u7528delete()<\/code>\u65b9\u6cd5\u7684\u4e00\u4e2a\u5e38\u89c1\u573a\u666f\u662f\u5728\u52a8\u6001\u66f4\u65b0\u56fe\u5f62\u65f6\uff0c\u4f8b\u5982\u5728\u52a8\u753b\u4e2d\u3002\u5f53\u60a8\u9700\u8981\u5728\u753b\u5e03\u4e0a\u7ed8\u5236\u65b0\u7684\u5e27\u65f6\uff0c\u9996\u5148\u9700\u8981\u6e05\u9664\u65e7\u7684\u5e27\uff0c\u4ee5\u786e\u4fdd\u753b\u5e03\u4e0a\u4e0d\u4f1a\u51fa\u73b0\u91cd\u53e0\u7684\u56fe\u5f62\u3002<\/p>\n<\/p>\n

\u4e8c\u3001\u66f4\u65b0\u56fe\u5f62\u5bf9\u8c61<\/p>\n<\/p>\n

\u5728Canvas\u4e2d\uff0c\u56fe\u5f62\u5bf9\u8c61\u662f\u53ef\u4ee5\u88ab\u66f4\u65b0\u7684\u3002\u4f8b\u5982\uff0c\u60a8\u53ef\u4ee5\u901a\u8fc7\u8bb0\u5f55\u56fe\u5f62\u5bf9\u8c61\u7684ID\u5e76\u4f7f\u7528coords()<\/code>\u65b9\u6cd5\u66f4\u65b0\u56fe\u5f62\u5bf9\u8c61\u7684\u4f4d\u7f6e\u3002\u8fd9\u6837\u505a\u53ef\u4ee5\u907f\u514d\u6bcf\u6b21\u91cd\u7ed8\u65f6\u90fd\u91cd\u65b0\u521b\u5efa\u56fe\u5f62\u5bf9\u8c61\uff0c\u63d0\u9ad8\u6548\u7387\u3002<\/p>\n<\/p>\n

\u5b9e\u4f8b\u4ee3\u7801<\/h3>\n<\/p>\n

import tkinter as tk<\/p>\n
def update_circle():<\/p>\n
    canvas.coords(circle, 50, 50, 100, 100)  # \u66f4\u65b0\u5706\u7684\u4f4d\u7f6e<\/p>\n
    root.after(1000, update_circle)  # \u6bcf\u96941000\u6beb\u79d2\u66f4\u65b0\u4e00\u6b21<\/p>\n
root = tk.Tk()<\/p>\n
canvas = tk.Canvas(root, width=200, height=200)<\/p>\n
canvas.pack()<\/p>\n
circle = canvas.create_oval(10, 10, 60, 60, fill='blue')  # \u521b\u5efa\u4e00\u4e2a\u521d\u59cb\u5706<\/p>\n
update_circle()  # \u5f00\u59cb\u66f4\u65b0<\/p>\n
root.mAI<\/a>nloop()<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u521b\u5efa\u4e86\u4e00\u4e2a\u7b80\u5355\u7684Tkinter\u5e94\u7528\u7a0b\u5e8f\u3002\u6211\u4eec\u5728Canvas\u4e0a\u7ed8\u5236\u4e00\u4e2a\u5706\uff0c\u5e76\u4e14\u901a\u8fc7after()<\/code>\u65b9\u6cd5\u6bcf\u9694\u4e00\u79d2\u66f4\u65b0\u5706\u7684\u4f4d\u7f6e\u3002\u901a\u8fc7\u8fd9\u79cd\u65b9\u5f0f\uff0c\u6211\u4eec\u5b9e\u73b0\u4e86Canvas\u5bf9\u8c61\u7684\u52a8\u6001\u66f4\u65b0\u3002<\/p>\n<\/p>\n
\u4e09\u3001\u4f7f\u7528after()<\/code>\u65b9\u6cd5\u8fdb\u884c\u5468\u671f\u6027\u66f4\u65b0<\/p>\n<\/p>\n
\u4f7f\u7528Tkinter\u7684after()<\/code>\u65b9\u6cd5\u53ef\u4ee5\u5728\u6307\u5b9a\u65f6\u95f4\u540e\u8c03\u7528\u4e00\u4e2a\u51fd\u6570\u3002\u8fd9\u4e2a\u65b9\u6cd5\u5bf9\u4e8e\u9700\u8981\u5468\u671f\u6027\u66f4\u65b0\u7684Canvas\u975e\u5e38\u6709\u7528\uff0c\u4f8b\u5982\u5728\u5b9e\u73b0\u52a8\u753b\u65f6\u3002<\/p>\n<\/p>\n
\u5728\u4f7f\u7528after()<\/code>\u65b9\u6cd5\u65f6\uff0c\u60a8\u53ef\u4ee5\u5b9a\u4e49\u4e00\u4e2a\u51fd\u6570\uff0c\u8be5\u51fd\u6570\u5728\u66f4\u65b0Canvas\u5185\u5bb9\u540e\u518d\u6b21\u8c03\u7528\u81ea\u5df1\uff0c\u4ece\u800c\u5b9e\u73b0\u6301\u7eed\u7684\u66f4\u65b0\u3002\u8fd9\u79cd\u65b9\u6cd5\u5bf9\u4e8e\u5b9e\u73b0\u7b80\u5355\u7684\u5b9a\u65f6\u5668\u6216\u52a8\u753b\u975e\u5e38\u6709\u6548\u3002<\/p>\n<\/p>\n
\u56db\u3001\u7ba1\u7406Canvas\u4e2d\u7684\u590d\u6742\u5bf9\u8c61<\/p>\n<\/p>\n
\u5f53\u60a8\u5728Canvas\u4e2d\u7ba1\u7406\u591a\u4e2a\u56fe\u5f62\u5bf9\u8c61\u65f6\uff0c\u4f7f\u7528\u6807\u7b7e\u548cID\u6765\u8ddf\u8e2a\u548c\u66f4\u65b0\u8fd9\u4e9b\u5bf9\u8c61\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002\u901a\u8fc7\u5c06\u76f8\u5173\u5bf9\u8c61\u5206\u914d\u7ed9\u76f8\u540c\u7684\u6807\u7b7e\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528Canvas\u7684delete()<\/code>\u548citemconfig()<\/code>\u65b9\u6cd5\u8f7b\u677e\u5730\u66f4\u65b0\u6216\u5220\u9664\u8fd9\u4e9b\u5bf9\u8c61\u3002<\/p>\n<\/p>\n
\u4f8b\u5982\uff0c\u5047\u8bbe\u60a8\u5728Canvas\u4e0a\u7ed8\u5236\u4e86\u591a\u4e2a\u77e9\u5f62\uff0c\u5e76\u5e0c\u671b\u540c\u65f6\u66f4\u65b0\u5b83\u4eec\u7684\u989c\u8272\u3002\u60a8\u53ef\u4ee5\u4e3a\u6240\u6709\u77e9\u5f62\u5206\u914d\u4e00\u4e2a\u516c\u5171\u6807\u7b7e\uff0c\u7136\u540e\u4f7f\u7528itemconfig()<\/code>\u65b9\u6cd5\u4e00\u6b21\u6027\u66f4\u65b0\u5b83\u4eec\u7684\u989c\u8272\u3002<\/p>\n<\/p>\n
\u4e94\u3001\u54cd\u5e94\u7528\u6237\u4ea4\u4e92\u8fdb\u884c\u91cd\u7ed8<\/p>\n<\/p>\n
\u5728\u4e00\u4e9b\u5e94\u7528\u7a0b\u5e8f\u4e2d\uff0c\u60a8\u53ef\u80fd\u5e0c\u671b\u6839\u636e\u7528\u6237\u7684\u4ea4\u4e92\uff08\u4f8b\u5982\u5355\u51fb\u6216\u62d6\u52a8\u9f20\u6807\uff09\u6765\u91cd\u7ed8Canvas\u3002\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u60a8\u53ef\u4ee5\u7ed1\u5b9a\u4e8b\u4ef6\u5904\u7406\u7a0b\u5e8f\u5230Canvas\u5e76\u5728\u4e8b\u4ef6\u53d1\u751f\u65f6\u66f4\u65b0Canvas\u7684\u5185\u5bb9\u3002<\/p>\n<\/p>\n
\u4f8b\u5982\uff0c\u901a\u8fc7\u7ed1\u5b9a\u9f20\u6807\u5355\u51fb\u4e8b\u4ef6\uff0c\u60a8\u53ef\u4ee5\u5728\u7528\u6237\u5355\u51fbCanvas\u65f6\u7ed8\u5236\u65b0\u7684\u56fe\u5f62\u5bf9\u8c61\u3002\u6216\u8005\uff0c\u901a\u8fc7\u7ed1\u5b9a\u9f20\u6807\u62d6\u52a8\u4e8b\u4ef6\uff0c\u60a8\u53ef\u4ee5\u5b9e\u73b0\u56fe\u5f62\u5bf9\u8c61\u7684\u62d6\u52a8\u529f\u80fd\u3002<\/p>\n<\/p>\n
\u516d\u3001\u5b9e\u73b0\u590d\u6742\u52a8\u753b\u6548\u679c<\/p>\n<\/p>\n
\u5bf9\u4e8e\u590d\u6742\u7684\u52a8\u753b\u6548\u679c\uff0c\u60a8\u53ef\u80fd\u9700\u8981\u5c06\u591a\u4e2aCanvas\u5bf9\u8c61\u7684\u66f4\u65b0\u7ec4\u5408\u5728\u4e00\u8d77\u3002\u8fd9\u901a\u5e38\u6d89\u53ca\u5230\u4f7f\u7528\u591a\u4e2aafter()<\/code>\u8c03\u7528\uff0c\u5e76\u5728\u6bcf\u4e2a\u8c03\u7528\u4e2d\u66f4\u65b0\u4e0d\u540c\u7684Canvas\u5bf9\u8c61\u3002<\/p>\n<\/p>\n
\u6b64\u5916\uff0c\u60a8\u8fd8\u53ef\u4ee5\u4f7f\u7528Python\u4e2d\u7684\u5176\u4ed6\u5e93\uff08\u5982Pillow\uff09\u6765\u751f\u6210\u590d\u6742\u7684\u56fe\u5f62\uff0c\u5e76\u5728Canvas\u4e2d\u663e\u793a\u8fd9\u4e9b\u56fe\u5f62\u3002\u901a\u8fc7\u8fd9\u79cd\u65b9\u5f0f\uff0c\u60a8\u53ef\u4ee5\u5b9e\u73b0\u590d\u6742\u7684\u56fe\u5f62\u6548\u679c\u548c\u52a8\u753b\u3002<\/p>\n<\/p>\n
\u4e03\u3001\u4f18\u5316Canvas\u91cd\u7ed8\u6027\u80fd<\/p>\n<\/p>\n
\u5728\u5904\u7406\u5927\u91cf\u56fe\u5f62\u5bf9\u8c61\u6216\u590d\u6742\u52a8\u753b\u65f6\uff0cCanvas\u7684\u6027\u80fd\u53ef\u80fd\u4f1a\u6210\u4e3a\u4e00\u4e2a\u95ee\u9898\u3002\u4e3a\u6b64\uff0c\u60a8\u53ef\u4ee5\u91c7\u53d6\u4ee5\u4e0b\u51e0\u79cd\u63aa\u65bd\u6765\u4f18\u5316Canvas\u7684\u91cd\u7ed8\u6027\u80fd\uff1a<\/p>\n<\/p>\n
    \n
  1. \n
    \u51cf\u5c11\u91cd\u7ed8\u6b21\u6570<\/strong>\uff1a\u907f\u514d\u4e0d\u5fc5\u8981\u7684\u91cd\u7ed8\u64cd\u4f5c\uff0c\u53ea\u5728\u9700\u8981\u65f6\u66f4\u65b0Canvas\u7684\u5185\u5bb9\u3002<\/p>\n<\/p>\n<\/li>\n
  2. \n
    \u4f7f\u7528\u56fe\u5f62\u5bf9\u8c61\u7684ID\u548c\u6807\u7b7e<\/strong>\uff1a\u5229\u7528ID\u548c\u6807\u7b7e\u6765\u9ad8\u6548\u5730\u7ba1\u7406\u548c\u66f4\u65b0Canvas\u4e2d\u7684\u56fe\u5f62\u5bf9\u8c61\u3002<\/p>\n<\/p>\n<\/li>\n
  3. \n
    \u5206\u5757\u66f4\u65b0<\/strong>\uff1a\u5728\u66f4\u65b0\u5927\u91cf\u5bf9\u8c61\u65f6\uff0c\u8003\u8651\u5c06\u66f4\u65b0\u8fc7\u7a0b\u5206\u6210\u591a\u4e2a\u6b65\u9aa4\uff0c\u4ee5\u907f\u514d\u5355\u6b21\u66f4\u65b0\u64cd\u4f5c\u5360\u7528\u8fc7\u591a\u8d44\u6e90\u3002<\/p>\n<\/p>\n<\/li>\n
  4. \n
    \u4f7f\u7528\u66f4\u9ad8\u6548\u7684\u56fe\u5f62\u5e93<\/strong>\uff1a\u5bf9\u4e8e\u975e\u5e38\u590d\u6742\u7684\u56fe\u5f62\u5904\u7406\uff0c\u8003\u8651\u4f7f\u7528\u66f4\u9ad8\u6548\u7684\u56fe\u5f62\u5e93\uff0c\u5982OpenGL\u6216Pygame\u3002<\/p>\n<\/p>\n<\/li>\n<\/ol>\n
    \u901a\u8fc7\u4ee5\u4e0a\u65b9\u6cd5\uff0c\u60a8\u53ef\u4ee5\u6709\u6548\u5730\u7ba1\u7406\u548c\u4f18\u5316Python\u4e2dCanvas\u7684\u91cd\u7ed8\u8fc7\u7a0b\uff0c\u5b9e\u73b0\u6d41\u7545\u7684\u7528\u6237\u754c\u9762\u548c\u52a8\u753b\u6548\u679c\u3002\u65e0\u8bba\u662f\u7b80\u5355\u7684\u56fe\u5f62\u66f4\u65b0\u8fd8\u662f\u590d\u6742\u7684\u52a8\u753b\u573a\u666f\uff0c\u5408\u7406\u7684\u8bbe\u8ba1\u548c\u4f18\u5316\u90fd\u80fd\u5e2e\u52a9\u60a8\u5b9e\u73b0\u9ad8\u6548\u7684Canvas\u91cd\u7ed8\u3002<\/p>\n<\/p>\n
    \u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
     \u5982\u4f55\u5728Python\u7684Canvas\u4e2d\u5b9e\u73b0\u91cd\u7ed8\u529f\u80fd\uff1f<\/strong>
    \u5728Python\u7684Canvas\u4e2d\u5b9e\u73b0\u91cd\u7ed8\u529f\u80fd\uff0c\u901a\u5e38\u9700\u8981\u4f7f\u7528create_<\/code>\u7cfb\u5217\u7684\u65b9\u6cd5\u6765\u91cd\u65b0\u7ed8\u5236\u56fe\u5f62\u3002\u53ef\u4ee5\u901a\u8fc7\u6e05\u9664\u4e4b\u524d\u7684\u7ed8\u5236\u5185\u5bb9\uff0c\u63a5\u7740\u91cd\u65b0\u6dfb\u52a0\u65b0\u7684\u5143\u7d20\u6765\u5b9e\u73b0\u91cd\u7ed8\u3002\u4f7f\u7528delete()<\/code>\u65b9\u6cd5\u53ef\u4ee5\u5220\u9664\u7279\u5b9a\u7684\u56fe\u5f62\u5143\u7d20\uff0c\u6216\u4f7f\u7528delete("all")<\/code>\u6765\u6e05\u7a7a\u6574\u4e2a\u753b\u5e03\u3002\u5b8c\u6210\u8fd9\u4e9b\u6b65\u9aa4\u540e\uff0c\u518d\u6b21\u8c03\u7528\u7ed8\u5236\u51fd\u6570\u5373\u53ef\u3002<\/p>\n
    \u5728Canvas\u4e2d\u7ed8\u5236\u540e\uff0c\u5982\u4f55\u66f4\u65b0\u6216\u4fee\u6539\u56fe\u5f62\uff1f<\/strong>
    \u66f4\u65b0\u6216\u4fee\u6539\u56fe\u5f62\u53ef\u4ee5\u901a\u8fc7\u4fdd\u5b58\u7ed8\u5236\u7684\u5bf9\u8c61ID\u6765\u5b9e\u73b0\u3002\u5728\u7ed8\u5236\u6bcf\u4e2a\u5f62\u72b6\u65f6\uff0c\u90fd\u4f1a\u8fd4\u56de\u4e00\u4e2a\u552f\u4e00\u7684ID\uff0c\u53ef\u4ee5\u5c06\u5176\u5b58\u50a8\u5728\u53d8\u91cf\u4e2d\u3002\u5982\u679c\u9700\u8981\u4fee\u6539\uff0c\u53ef\u4ee5\u4f7f\u7528itemconfig()<\/code>\u65b9\u6cd5\u6765\u6539\u53d8\u8be5\u5bf9\u8c61\u7684\u5c5e\u6027\uff0c\u6bd4\u5982\u989c\u8272\u3001\u5927\u5c0f\u7b49\u3002\u901a\u8fc7\u8fd9\u79cd\u65b9\u5f0f\uff0c\u53ef\u4ee5\u9ad8\u6548\u5730\u66f4\u65b0\u56fe\u5f62\u800c\u4e0d\u5fc5\u91cd\u65b0\u7ed8\u5236\u6574\u4e2aCanvas\u3002<\/p>\n
    \u662f\u5426\u53ef\u4ee5\u4f7f\u7528\u52a8\u753b\u6548\u679c\u5728Canvas\u4e2d\u5b9e\u73b0\u91cd\u7ed8\uff1f<\/strong>
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