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   "source": [
    "# 18-05 · Фигуры\n",
    "\n",
    "Практика к разделу [«Квадраты и прямоугольники! Круги и овалы!»](../../site/chapters/glava-18/18-05-figury.html)."
   ]
  },
  {
   "cell_type": "markdown",
   "id": "ed441897",
   "metadata": {},
   "source": [
    "## Цель\n",
    "\n",
    "Нарисовать прямоугольник и овал по событиям мыши."
   ]
  },
  {
   "cell_type": "markdown",
   "id": "157d842d",
   "metadata": {},
   "source": [
    "## Про mainloop() и события мыши в этом ноутбуке\n",
    "\n",
    "Вместо `root.mainloop()` здесь используется `root.update()` + `root.destroy()`. А вместо настоящих кликов мышью мы вызываем функции-обработчики напрямую с маленьким объектом `FakeEvent(x, y)` вместо настоящего события — Tkinter в реальном приложении передаёт объект с такими же полями `.x`/`.y`, так что код обработчиков проверяется по-настоящему."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 1,
   "id": "c1430ff2",
   "metadata": {
    "execution": {
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     "iopub.status.busy": "2026-08-14T21:02:35.081187Z",
     "iopub.status.idle": "2026-08-14T21:02:35.097594Z",
     "shell.execute_reply": "2026-08-14T21:02:35.097054Z"
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   "source": [
    "class FakeEvent:\n",
    "    def __init__(self, x, y):\n",
    "        self.x = x\n",
    "        self.y = y"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "a41f4676",
   "metadata": {},
   "source": [
    "## Рабочий пример"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "id": "52588dca",
   "metadata": {
    "execution": {
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     "iopub.status.idle": "2026-08-14T21:02:35.201721Z",
     "shell.execute_reply": "2026-08-14T21:02:35.201218Z"
    }
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Создано id: 1 2\n",
      "Всего фигур: 2\n"
     ]
    }
   ],
   "source": [
    "import tkinter as tk\n",
    "\n",
    "root = tk.Tk()\n",
    "canvas = tk.Canvas(root, width=600, height=400, bg=\"white\")\n",
    "canvas.pack()\n",
    "\n",
    "tekuschaya_figura = \"pryamougolnik\"\n",
    "tekuschij_cvet = \"red\"\n",
    "tolschina = 2\n",
    "start_x, start_y = 20, 20\n",
    "\n",
    "def narisovat_figuru(event, figura):\n",
    "    if figura == \"pryamougolnik\":\n",
    "        return canvas.create_rectangle(start_x, start_y, event.x, event.y, outline=tekuschij_cvet, width=tolschina)\n",
    "    elif figura == \"oval\":\n",
    "        return canvas.create_oval(start_x, start_y, event.x, event.y, outline=tekuschij_cvet, width=tolschina)\n",
    "\n",
    "id1 = narisovat_figuru(FakeEvent(120, 100), \"pryamougolnik\")\n",
    "id2 = narisovat_figuru(FakeEvent(220, 180), \"oval\")\n",
    "print(\"Создано id:\", id1, id2)\n",
    "print(\"Всего фигур:\", len(canvas.find_all()))\n",
    "root.update()\n",
    "root.destroy()"
   ]
  }
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