{ "cells": [ { "cell_type": "markdown", "id": "be24cf08", "metadata": {}, "source": [ "# 18-07 · Полное приложение\n", "\n", "Практика к разделу [«Я закончил рисовать! Полная программа»](../../site/chapters/glava-18/18-07-polnaya-programma-itogi.html)." ] }, { "cell_type": "markdown", "id": "f7164df7", "metadata": {}, "source": [ "## Цель\n", "\n", "Собрать и протестировать рисовалку целиком — тот же код, что и в `projects/tkinter/paint-app/paint_app.py`." ] }, { "cell_type": "markdown", "id": "c6afa8f6", "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": "ed9265b8", "metadata": { "execution": { "iopub.execute_input": "2026-08-14T21:02:37.782016Z", "iopub.status.busy": "2026-08-14T21:02:37.781852Z", "iopub.status.idle": "2026-08-14T21:02:37.805956Z", "shell.execute_reply": "2026-08-14T21:02:37.805194Z" } }, "outputs": [], "source": [ "class FakeEvent:\n", " def __init__(self, x, y):\n", " self.x = x\n", " self.y = y" ] }, { "cell_type": "markdown", "id": "11f0f5d0", "metadata": {}, "source": [ "## Полное приложение" ] }, { "cell_type": "code", "execution_count": 2, "id": "09f1ddf2", "metadata": { "execution": { "iopub.execute_input": "2026-08-14T21:02:37.808197Z", "iopub.status.busy": "2026-08-14T21:02:37.807957Z", "iopub.status.idle": "2026-08-14T21:02:37.912926Z", "shell.execute_reply": "2026-08-14T21:02:37.912388Z" } }, "outputs": [ { "name": "stdout", "output_type": "stream", "text": [ "Рисовалка построена.\n" ] } ], "source": [ "import tkinter as tk\n", "\n", "root = tk.Tk()\n", "root.title(\"Рисовалка\")\n", "\n", "tekuschaya_figura = \"linia\"\n", "tekuschij_cvet = \"black\"\n", "tolschina = 3\n", "start_x = None\n", "start_y = None\n", "vremennaya_figura = None\n", "\n", "\n", "def vybrat_figuru(figura):\n", " global tekuschaya_figura\n", " tekuschaya_figura = figura\n", "\n", "\n", "def vybrat_cvet(cvet):\n", " global tekuschij_cvet\n", " tekuschij_cvet = cvet\n", "\n", "\n", "def vybrat_tolschinu(znachenie):\n", " global tolschina\n", " tolschina = int(znachenie)\n", "\n", "\n", "def nachalo_risovaniya(event):\n", " global start_x, start_y\n", " start_x, start_y = event.x, event.y\n", " if tekuschaya_figura == \"svobodno\":\n", " canvas.create_oval(\n", " event.x - tolschina, event.y - tolschina,\n", " event.x + tolschina, event.y + tolschina,\n", " fill=tekuschij_cvet, outline=tekuschij_cvet,\n", " )\n", "\n", "\n", "def vo_vremya_risovaniya(event):\n", " global vremennaya_figura\n", " if tekuschaya_figura == \"svobodno\":\n", " canvas.create_oval(\n", " event.x - tolschina, event.y - tolschina,\n", " event.x + tolschina, event.y + tolschina,\n", " fill=tekuschij_cvet, outline=tekuschij_cvet,\n", " )\n", " return\n", "\n", " if vremennaya_figura is not None:\n", " canvas.delete(vremennaya_figura)\n", "\n", " if tekuschaya_figura == \"linia\":\n", " vremennaya_figura = canvas.create_line(start_x, start_y, event.x, event.y, fill=tekuschij_cvet, width=tolschina)\n", " elif tekuschaya_figura == \"pryamougolnik\":\n", " vremennaya_figura = canvas.create_rectangle(start_x, start_y, event.x, event.y, outline=tekuschij_cvet, width=tolschina)\n", " elif tekuschaya_figura == \"oval\":\n", " vremennaya_figura = canvas.create_oval(start_x, start_y, event.x, event.y, outline=tekuschij_cvet, width=tolschina)\n", "\n", "\n", "def konec_risovaniya(event):\n", " global vremennaya_figura\n", " vremennaya_figura = None\n", "\n", "\n", "def ochistit_holst():\n", " canvas.delete(\"all\")\n", "\n", "\n", "canvas = tk.Canvas(root, width=600, height=400, bg=\"white\")\n", "canvas.pack()\n", "canvas.bind(\"\", nachalo_risovaniya)\n", "canvas.bind(\"\", vo_vremya_risovaniya)\n", "canvas.bind(\"\", konec_risovaniya)\n", "\n", "print(\"Рисовалка построена.\")\n", "root.update()" ] }, { "cell_type": "markdown", "id": "b8ff3951", "metadata": {}, "source": [ "## Проверка результата — рисуем линию, прямоугольник, очищаем" ] }, { "cell_type": "code", "execution_count": 3, "id": "eb1589be", "metadata": { "execution": { "iopub.execute_input": "2026-08-14T21:02:37.914002Z", "iopub.status.busy": "2026-08-14T21:02:37.913830Z", "iopub.status.idle": "2026-08-14T21:02:37.917968Z", "shell.execute_reply": "2026-08-14T21:02:37.917521Z" } }, "outputs": [ { "name": "stdout", "output_type": "stream", "text": [ "После линии: 1 (было 0 )\n", "После прямоугольника: 2\n", "Холст очищен — всё верно.\n" ] } ], "source": [ "before = len(canvas.find_all())\n", "nachalo_risovaniya(FakeEvent(10, 10))\n", "vo_vremya_risovaniya(FakeEvent(100, 100))\n", "konec_risovaniya(FakeEvent(100, 100))\n", "posle_linii = len(canvas.find_all())\n", "print(\"После линии:\", posle_linii, \"(было\", before, \")\")\n", "assert posle_linii == before + 1\n", "\n", "vybrat_figuru(\"pryamougolnik\")\n", "nachalo_risovaniya(FakeEvent(20, 20))\n", "vo_vremya_risovaniya(FakeEvent(80, 80))\n", "konec_risovaniya(FakeEvent(80, 80))\n", "posle_pryamougolnika = len(canvas.find_all())\n", "print(\"После прямоугольника:\", posle_pryamougolnika)\n", "assert posle_pryamougolnika == posle_linii + 1\n", "\n", "ochistit_holst()\n", "assert len(canvas.find_all()) == 0\n", "print(\"Холст очищен — всё верно.\")\n", "\n", "root.destroy()" ] } ], "metadata": { "kernelspec": { "display_name": "Cartesian Python 3.14", "language": "python", "name": "cartesian-python314" }, "language_info": { "codemirror_mode": { "name": "ipython", "version": 3 }, "file_extension": ".py", "mimetype": "text/x-python", "name": "python", "nbconvert_exporter": "python", "pygments_lexer": "ipython3", "version": "3.14.6" } }, "nbformat": 4, "nbformat_minor": 5 }