{"id":1620,"date":"2020-10-20T00:00:49","date_gmt":"2020-10-19T15:00:49","guid":{"rendered":"https:\/\/www.ishikawasekkei.com\/?p=1620"},"modified":"2020-10-22T18:37:28","modified_gmt":"2020-10-22T09:37:28","slug":"python-tkinter-gui-programing-canvas-item-resize","status":"publish","type":"post","link":"https:\/\/www.ishikawasekkei.com\/index.php\/2020\/10\/20\/python-tkinter-gui-programing-canvas-item-resize\/","title":{"rendered":"Python tkinter GUI\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0 Canvas \u306e\u9805\u76ee\u30ea\u30b5\u30a4\u30ba"},"content":{"rendered":"\n

\u3000\u3053\u3093\u306b\u3061\u306f\u3002\u3059\u3063\u304b\u308a\u79cb\u306b\u306a\u308a\u307e\u3057\u305f\u306d\u3002\u77f3\u5ddd\u3055\u3093\u3067\u3059\u3002\u4e45\u3057\u3076\u308a\u306e\u6295\u7a3f\u306b\u306a\u308a\u307e\u3057\u305f\u3002<\/p>\n\n\n\n

\u3000\u4eca\u56de\u306f\u3001tkinter\u306eCanvas\u306b\u56db\u89d2\u5f62\u3092\u63cf\u3044\u3066\u3001\u305d\u308c\u306e\u5927\u304d\u3055\u3092\u30de\u30a6\u30b9\u3067\u5909\u66f4\u3059\u308b\u3001\u3068\u3044\u3046\u306e\u306b\u30c1\u30e3\u30ec\u30f3\u30b8\u3057\u307e\u3057\u305f\u3002<\/p>\n\n\n\n

\u51fa\u6765\u4e0a\u304c\u308a\u30a4\u30e1\u30fc\u30b8<\/h2>\n\n\n\n
\"\"
\u51fa\u6765\u4e0a\u304c\u308a\u30a4\u30e1\u30fc\u30b8<\/figcaption><\/figure>\n\n\n\n

\u3000\u4eca\u56de\u4f7f\u7528\u3059\u308btkinter\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306fCanvas\u3060\u3051\u3067\u3059\u3002\u56db\u89d2\u5f62\u306fcreate_rectangle\u3067\u63cf\u3044\u3066\u3001\u30de\u30a6\u30b9\u304c\u4e0a\u306b\u6765\u305f\u3089\u3001\u305d\u308c\u3063\u307d\u3044\u30dd\u30a4\u30f3\u30bf\u30fc\u306b\u5909\u308f\u308a\u307e\u3059\u3002\u305d\u306e\u4e0a\u3067\u30c9\u30e9\u30c3\u30b0\u3059\u308b\u3068\u3001\u30b5\u30a4\u30ba\u304c\u5909\u66f4\u3055\u308c\u308b\u3001\u3068\u3044\u3046\u30b7\u30f3\u30d7\u30eb\u306a\u30d7\u30ed\u30b0\u30e9\u30e0\u3067\u3059\u3002<\/p>\n\n\n\n

\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9<\/h2>\n\n\n\n
import tkinter as tk\n\n\nclass App(tk.Tk):\n    MARGIN = 5\n\n    def __init__(self):\n        super().__init__()\n        self.geometry(\"800x700\")\n        self.title(\"Canvas item resize example\")\n\n        self.canvas = c = tk.Canvas(self, background=\"white\")\n        c.pack(fill=tk.BOTH, expand=True)\n\n        x1, y1, x2, y2 = 100, 100, 400, 500\n        self.rect = c.create_rectangle(x1, y1, x2, y2, width=App.MARGIN)\n        c.bind(\"<ButtonPress>\", self.press)\n        c.bind(\"<ButtonRelease>\", self.release)\n        c.bind(\"<Motion>\", self.move)\n        self.coords = None\n        self.position = None\n\n    def get_cursor_position(self, x, y):\n        left, right = x - App.MARGIN * 2, x + App.MARGIN * 2\n        top, bottom = y - App.MARGIN * 2, y + App.MARGIN * 2\n        x1, y1, x2, y2 = self.canvas.coords(self.rect)\n        cursors = [\n            [\"ul_angle\",          \"sb_v_double_arrow\", \"ur_angle\"],\n            [\"sb_h_double_arrow\", \"\",                  \"sb_h_double_arrow\"],\n            [\"ll_angle\",          \"sb_v_double_arrow\", \"lr_angle\"]\n        ]\n        if bottom < y1 or y2 < top:\n            return \"\", None\n        elif top <= y1 <= bottom:\n            row = 0\n        elif top <= y2 <= bottom:\n            row = 2\n        else:\n            row = 1\n        if right < x1 or x2 < left:\n            return \"\", None\n        elif left <= x1 <= right:\n            column = 0\n        elif left <= x2 <= right:\n            column = 2\n        else:\n            column = 1\n        return cursors[row][column], (row, column)\n\n    def press(self, event):\n        self.coords = self.canvas.coords(self.rect)\n\n    def move(self, event):\n        x, y = self.canvas.canvasx(event.x), self.canvas.canvasy(event.y)\n        if self.coords and self.position:\n            if self.position[1] == 0:  # Left\n                self.coords[0] = x\n            if self.position[0] == 0:  # Top\n                self.coords[1] = y\n            if self.position[1] == 2:  # Right\n                self.coords[2] = x\n            if self.position[0] == 2:  # Bottom\n                self.coords[3] = y\n            self.canvas.coords(self.rect, *self.coords)\n\n        cursor, self.position = self.get_cursor_position(x, y)\n        self.configure(cursor=cursor)\n\n    def release(self, event):\n        if self.coords:\n            self.coords = None\n\n\nif __name__ == \"__main__\":\n    app = App()\n    app.mainloop()\n<\/pre>\n\n\n\n
\u89e3\u8aac<\/h2>\n\n\n\n
\u30009\u884c\u76ee\u3067\u30a6\u30a3\u30f3\u30c9\u30a6\u306e\u30b5\u30a4\u30ba\u300110\u884c\u76ee\u3067\u30bf\u30a4\u30c8\u30eb\u3092\u30bb\u30c3\u30c8\u3057\u3066\u3044\u307e\u3059\u300212\uff6413\u884c\u76ee\u3001Canvas\u3092\u3064\u304f\u3063\u3066\u914d\u7f6e\u3057\u3066\u3044\u307e\u3059\u300215\uff6416\u884c\u76ee\u306ecreate_rectangle()\u3067\u56db\u89d2\u5f62\u3092\u63cf\u3044\u3066\u3044\u307e\u3059\u300217\uff5e19\u884c\u76ee\u3067\u306fbind\u3092\u4f7f\u3063\u3066\u3001<ButtonPress>\u30de\u30a6\u30b9\u30dc\u30bf\u30f3\u304c\u62bc\u3055\u308c\u305f\u3068\u304d\u3001<ButtonRelease>\u30de\u30a6\u30b9\u30dc\u30bf\u30f3\u304c\u96e2\u3055\u308c\u305f\u3068\u304d\u3001<Motion>\u30de\u30a6\u30b9\u304c\u52d5\u3044\u305f\u3068\u304d\u3001\u306b\u3001\u305d\u308c\u305e\u308c\u51e6\u7406\u3092\u3042\u3066\u304c\u3063\u3066\u3044\u307e\u3059\u300221\uff6422\u884c\u306f\u5f8c\u306e\u51e6\u7406\u3067\u5229\u7528\u3059\u308b\u3068\u304d\u306b\u30a8\u30e9\u30fc\u3068\u306a\u3089\u306a\u3044\u3088\u3046\u5909\u6570\u3092\u521d\u671f\u5316\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n
\u300023\uff5e48\u884c\u76ee\u306e\u30e1\u30bd\u30c3\u30c9\u3001get_cursor_position\u3067\u306f\u3001\u30de\u30a6\u30b9\u306e\u73fe\u5728\u4f4d\u7f6e\u304b\u3089\u30ab\u30fc\u30bd\u30eb\u306e\u7a2e\u985e\u3068\u4f4d\u7f6e\u3092\u623b\u3057\u3066\u3044\u307e\u3059\u3002\u30dd\u30a4\u30f3\u30c8\u306f27\u884c\u76ee\u306ecursors\u30ea\u30b9\u30c8\u3092\u914d\u5217\u306e\u3088\u3046\u306b\u4f7f\u3063\u3066\u3044\u308b\u3068\u3053\u308d\u3067\u3059\u30023\u00d73\u306e\u884c\u5217\u3092\u30a4\u30e1\u30fc\u30b8\u3057\u3066\u30016\u7a2e\u985e\u306e\u30ab\u30fc\u30bd\u30eb\u3092\u5834\u6240\u306b\u3088\u3063\u3066\u7279\u5b9a\u3059\u308b\u3088\u3046\u306b\u3057\u3066\u3044\u307e\u3059\u3002\u3061\u306a\u307f\u306b26\u884c\u76ee\u306ecoords\u30e1\u30bd\u30c3\u30c9\u306f\u3001self.rect\u306e\u5de6\u4e0a\u306e\u5ea7\u6a19\u3068\u53f3\u4e0a\u306e\u5ea7\u6a19\u3092\u9806\u756a\u306b\u8fd4\u3057\u307e\u3059\u3002<\/p>\n\n\n\n
\u300050\u300151\u884c\u76ee\u306e\u30e1\u30bd\u30c3\u30c9\u3001press\u306f\u30de\u30a6\u30b9\u30dc\u30bf\u30f3\u304c\u62bc\u3055\u308c\u305f\u3068\u304d\u306b\u547c\u3073\u51fa\u3055\u308c\u308b\u51e6\u7406\u3067\u3059\u3002\u3053\u3053\u3067\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u5909\u6570\u306ecoords\u3078\u5024\u3092\u30bb\u30c3\u30c8\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u5024\u304c\u30bb\u30c3\u30c8\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u3067\u3001\u30dc\u30bf\u30f3\u304c\u62bc\u3055\u308c\u3066\u3044\u308b\u3001\u3068\u3044\u3046\u3053\u3068\u304c\u4ed6\u306e\u51e6\u7406\u304b\u3089\u3067\u3082\u308f\u304b\u308b\u3088\u3046\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002\u3061\u306a\u307f\u306b69\uff5e71\u884c\u76ee\u306erelease\u306f\u30de\u30a6\u30b9\u30dc\u30bf\u30f3\u304c\u96e2\u3055\u308c\u305f\u3068\u304d\u306b\u547c\u3073\u51fa\u3055\u308c\u308b\u51e6\u7406\u3067\u3001\u3053\u306e\u5024(coords)\u3092None\u306b\u30bb\u30c3\u30c8\u3059\u308b\u3053\u3068\u3067\u30de\u30a6\u30b9\u30dc\u30bf\u30f3\u306f\u62bc\u3055\u308c\u3066\u3044\u306a\u3044\u3001\u3068\u3044\u3046\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u3002<\/p>\n\n\n\n
\u300053\uff5e67\u884c\u76ee\u306emove\u30e1\u30bd\u30c3\u30c9\u304c\u4e3b\u306a\u51e6\u7406\u90e8\u5206\u3067\u3059\u306d\u3002\u524d\u534a\u90e8\u5206\u306f\u30b5\u30a4\u30ba\u3092\u5909\u66f4\u3059\u308b\u51e6\u7406\u3067\u3001\u5f8c\u534a\u90e8\u5206\u306f\u30ab\u30fc\u30bd\u30eb\u306e\u5f62\u72b6\u3092\u5909\u66f4\u3059\u308b\u51e6\u7406\u3067\u3059\u300254\u884c\u76ee\u306ecanvasx\u3068canvasy\u306f\u3001\u5ea7\u6a19\u7cfb\u306e\u5909\u66f4\u3092\u3057\u3066\u3044\u307e\u3059\u3002event\u304b\u3089\u53d6\u5f97\u3057\u305fx\u3001y\u306f\u3001Canvas\u4e0a\u306ex\u3001y\u3068\u7570\u306a\u308a\u3001\u753b\u9762\u7cfb\u306e\u5ea7\u6a19\u306a\u306e\u3067canvasx\u3001canvasy\u3067\u5909\u63db\u3057\u3066\u4f7f\u3046\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u300255\u884c\u76ee\u306e\u5224\u5b9a\u306f\u3001self.coords\u306f\u30de\u30a6\u30b9\u30dc\u30bf\u30f3\u304c\u62bc\u3055\u308c\u3066\u3044\u308b\u3068\u304d\u306b\u9650\u308b\u305f\u3081\u306e\u6761\u4ef6\u3001self.position\u306f\u30ab\u30fc\u30bd\u30eb\u304c\u8fd1\u304f\u306b\u3042\u308b\u6642\u306b\u9650\u308b\u305f\u3081\u306e\u6761\u4ef6\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002<Motion>\u30a4\u30d9\u30f3\u30c8\u306b\u5bfe\u3059\u308b\u51e6\u7406\u306a\u306e\u3067\u3001\u5b9f\u884c\u3055\u308c\u308b\u6761\u4ef6\u3092\u304d\u3061\u3093\u3068\u7d5e\u308a\u8fbc\u3080\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u306d\u3002
\u300064\u884c\u76ee\u3001\u518d\u3073coords\u304c\u767b\u5834\u3059\u308b\u306e\u3067\u3059\u304c\u300126\u884c\u76ee\u3068\u306f\u9055\u3044\u3001\u7b2c\u4e8c\u5f15\u6570\u304c\u3042\u308a\u307e\u3059\u3002\u524d\u56de\u306f\u5ea7\u6a19\u3092\u53d6\u5f97\u3059\u308b\u3060\u3051\u3067\u3057\u305f\u304c\u3001\u3053\u306e\u7b2c\u4e8c\u5f15\u6570\u304c\u6307\u5b9a\u3055\u308c\u305f\u5834\u5408\u306b\u306f\u3001\u9805\u76ee\u306e\u5ea7\u6a19\u3092\u7b2c\u4e8c\u5f15\u6570\u306e\u3068\u304a\u308a\u306b\u5909\u66f4\u3059\u308b\u3001\u3068\u3044\u3046\u70b9\u304c\u7570\u306a\u308a\u307e\u3059\u3002\u3053\u306e\u4e00\u6587\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u3067\u3001\u30de\u30a6\u30b9\u30dd\u30a4\u30f3\u30bf\u306e\u79fb\u52d5\u306b\u3042\u308f\u305b\u3066\u56db\u89d2\u5f62\u3092\u5909\u5f62\u3055\u305b\u3066\u3044\u307e\u3059\u3002
\u300066\uff6467\u884c\u76ee\u306f\u30ab\u30fc\u30bd\u30eb\u304c\u89d2\u3063\u3053\u306b\u79fb\u52d5\u3057\u305f\u3068\u304d\u306b\u30ab\u30fc\u30bd\u30eb\u306e\u5f62\u72b6\u3092\u5909\u66f4\u3059\u308b\u305f\u3081\u306b\u3053\u3053\u3078\u5165\u308c\u307e\u3057\u305f\u3002\u307e\u305f\u3001\u3053\u3053\u3067self.position\u3092\u30bb\u30c3\u30c8\u3059\u308b\u3053\u3068\u3067\u3001\u56db\u89d2\u5f62\u304b\u3089\u96e2\u308c\u305f\u5834\u6240\u304b\u3089\u306e\u30c9\u30e9\u30c3\u30b0\u3067\u30ea\u30b5\u30a4\u30ba\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n
\u307e\u3068\u3081<\/h2>\n\n\n\n
\u3000\u3044\u308d\u3044\u308d\u3068\u8a66\u884c\u932f\u8aa4\u3057\u3066\u3044\u307e\u3057\u305f\u306e\u3067\u6761\u4ef6\u5224\u5b9a\u304c\u5272\u5408\u30b9\u30c3\u30ad\u30ea\u3068\u3067\u304d\u305f\u306e\u3067\u306f\u306a\u3044\u3067\u3057\u3087\u3046\u304b\u3002\u4eca\u56de\u306f\u7c21\u5358\u306b\u3059\u308b\u305f\u3081\u306b\u3001\u56db\u89d2\u5f62\u306f\u30af\u30e9\u30b9\u5316\u305b\u305a\u306b\u3072\u3068\u3064\u3060\u3051\u7528\u610f\u3057\u3066\u304a\u304f\u3088\u3046\u306b\u3057\u307e\u3057\u305f\u3002\u5b9f\u969b\u306e\u73fe\u5834\u3060\u3063\u305f\u308a\u3059\u308b\u3068\u3072\u3068\u3064\u3060\u3051\u7528\u610f\u3059\u308c\u3070\u3088\u3044\u3001\u3068\u3044\u3046\u3053\u3068\u306f\u307b\u3068\u3093\u3069\u306a\u3044\u3068\u601d\u3044\u307e\u3059\u306e\u3067\u3001\u30af\u30e9\u30b9\u5316\u3082\u3084\u3063\u3066\u307f\u305f\u3044\u3067\u3059\u306d\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u3000\u3053\u3093\u306b\u3061\u306f\u3002\u3059\u3063\u304b\u308a\u79cb\u306b\u306a\u308a\u307e\u3057\u305f\u306d\u3002\u77f3\u5ddd\u3055\u3093\u3067\u3059\u3002\u4e45\u3057\u3076\u308a\u306e\u6295\u7a3f\u306b\u306a\u308a\u307e\u3057\u305f\u3002 \u3000\u4eca\u56de\u306f\u3001tkinter\u306eCanvas\u306b\u56db\u89d2\u5f62\u3092\u63cf\u3044\u3066\u3001\u305d\u308c\u306e\u5927\u304d\u3055\u3092\u30de\u30a6\u30b9\u3067\u5909\u66f4\u3059\u308b\u3001\u3068\u3044\u3046\u306e\u306b\u30c1\u30e3\u30ec\u30f3\u30b8\u3057\u307e\u3057\u305f\u3002 \u51fa\u6765\u4e0a\u304c\u308a\u30a4\u30e1\u30fc … <\/p>\n
“Python tkinter GUI\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0 Canvas \u306e\u9805\u76ee\u30ea\u30b5\u30a4\u30ba” \u306e<\/span>\u7d9a\u304d\u3092\u8aad\u3080<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8,13,2],"tags":[],"class_list":["post-1620","post","type-post","status-publish","format-standard","hentry","category-program","category-tkinter","category-blog"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.ishikawasekkei.com\/index.php\/wp-json\/wp\/v2\/posts\/1620","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ishikawasekkei.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ishikawasekkei.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ishikawasekkei.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ishikawasekkei.com\/index.php\/wp-json\/wp\/v2\/comments?post=1620"}],"version-history":[{"count":9,"href":"https:\/\/www.ishikawasekkei.com\/index.php\/wp-json\/wp\/v2\/posts\/1620\/revisions"}],"predecessor-version":[{"id":1633,"href":"https:\/\/www.ishikawasekkei.com\/index.php\/wp-json\/wp\/v2\/posts\/1620\/revisions\/1633"}],"wp:attachment":[{"href":"https:\/\/www.ishikawasekkei.com\/index.php\/wp-json\/wp\/v2\/media?parent=1620"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ishikawasekkei.com\/index.php\/wp-json\/wp\/v2\/categories?post=1620"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ishikawasekkei.com\/index.php\/wp-json\/wp\/v2\/tags?post=1620"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}