feat:v2.4.3版本，10以内的加减计算
This commit is contained in:
R524809
@@ -0,0 +1,298 @@
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import { PAPER_SIZE } from '../../constants/colors';
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import { checkAndSaveImage } from '../../utils/saveImage';
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import { shouldShowShareGuide } from '../../utils/shareGuide';
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import AdditionDraw from '../service/additionDraw';
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import {
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MATH_FUNCTION_TYPES,
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MathFunctionType,
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} from '../../constants/mathFunctions';
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Page({
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canvas: null as Canvas | null,
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ctx: null as RenderingContext | null,
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boxHeight: 0,
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boxWidth: 0,
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drawService: null as AdditionDraw | null,
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calculationData: null as {
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problems: Array<{
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type: 'addition' | 'subtraction';
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left: number;
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right: number;
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result: number;
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}>;
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} | null,
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data: {
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pageTitle: '加减法计算',
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functionId: '',
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hasContent: false,
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showShareDialog: false,
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showTypeSelector: false,
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currentType: 'addition-5', // 'addition-5', 'addition-10', 'subtraction-10', 'addition-subtraction-10'
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currentTypeName: '5以内加法',
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typeActions: [
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{ name: '5以内加法', value: 'addition-5' },
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{ name: '10以内加法', value: 'addition-10' },
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{ name: '10以内减法', value: 'subtraction-10' },
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{ name: '10以内加减法', value: 'addition-subtraction-10' },
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],
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imageType: 'twelve-animals', // 图片类型：twelve-animals 或 fruits
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},
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onLoad(options: { id?: string }) {
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const functionId = options.id || 'addition-5';
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this.setData({ functionId });
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const functionItem = MATH_FUNCTION_TYPES.find(
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(item: MathFunctionType) => item.id === functionId,
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);
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const pageTitle = functionItem?.title || '加减法计算';
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this.setData({ pageTitle });
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wx.setNavigationBarTitle({ title: pageTitle });
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// 根据 functionId 设置默认类型
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if (functionId === 'addition-5') {
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this.setData({
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currentType: 'addition-5',
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currentTypeName: '5以内加法',
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});
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} else if (functionId === 'addition-10') {
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this.setData({
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currentType: 'addition-10',
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currentTypeName: '10以内加法',
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});
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} else if (functionId === 'subtraction-10') {
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this.setData({
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currentType: 'subtraction-10',
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currentTypeName: '10以内减法',
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});
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} else if (functionId === 'addition-subtraction-10') {
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this.setData({
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currentType: 'addition-subtraction-10',
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currentTypeName: '10以内加减法',
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});
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}
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},
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onReady() {
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this.initCanvas();
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},
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/**
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* 初始化Canvas
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*/
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initCanvas() {
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const query = wx.createSelectorQuery();
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query
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.select('#canvasWrapper')
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.boundingClientRect((rect) => {
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if (rect) {
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const { width, height } = PAPER_SIZE['A4'];
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const boxWidth = rect.width;
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const boxHeight = boxWidth / (width / height);
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this.boxHeight = boxHeight;
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this.boxWidth = boxWidth;
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this.setData({ boxWidth, boxHeight });
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const canvas = wx
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.createSelectorQuery()
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.select('#canvasContent');
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canvas.fields({ node: true, size: true }).exec((res) => {
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if (res[0]) {
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const canvasNode = res[0].node;
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const ctx = canvasNode.getContext('2d');
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const dpr = wx.getSystemInfoSync().pixelRatio;
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canvasNode.width = boxWidth * dpr;
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canvasNode.height = boxHeight * dpr;
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ctx.scale(dpr, dpr);
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this.canvas = canvasNode;
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this.ctx = ctx;
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this.drawService = new AdditionDraw(
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canvasNode,
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ctx,
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{
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title: this.data.currentTypeName,
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subTitle: '通过图形化方式学习加减法运算',
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},
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);
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// 初始随机生成
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this.onRandom();
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}
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});
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}
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})
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.exec();
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},
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/**
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* 绘制Canvas内容
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*/
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async drawCanvas() {
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if (!this.ctx || !this.drawService || !this.calculationData) {
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return;
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}
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try {
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// 更新 Header 的 Title
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if (this.drawService) {
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this.drawService.options.title = this.data.currentTypeName;
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}
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await this.drawService.draw(
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this.calculationData,
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this.data.currentType,
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);
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this.setData({ hasContent: true });
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} catch (error) {
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console.error('绘制失败:', error);
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this.setData({ hasContent: false });
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}
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},
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/**
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* 随机生成
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*/
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onRandom() {
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const problems: Array<{
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type: 'addition' | 'subtraction';
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left: number;
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right: number;
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result: number;
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}> = [];
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const type = this.data.currentType;
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// 生成6道题目
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for (let i = 0; i < 5; i++) {
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if (type === 'addition-5') {
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// 5以内加法：和 ≤ 5
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// left >= 1, right >= 1, left + right <= 5
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const maxSum = 5;
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const left = Math.floor(Math.random() * (maxSum - 1)) + 1; // 1 到 4
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const maxRight = maxSum - left; // 确保 left + right <= 5
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const right = Math.floor(Math.random() * maxRight) + 1; // 1 到 maxRight
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const result = left + right;
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problems.push({ type: 'addition', left, right, result });
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} else if (type === 'addition-10') {
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// 10以内加法：和 ≤ 10
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// left >= 1, right >= 1, left + right <= 10
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const maxSum = 10;
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const left = Math.floor(Math.random() * (maxSum - 1)) + 1; // 1 到 9
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const maxRight = maxSum - left; // 确保 left + right <= 10
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const right = Math.floor(Math.random() * maxRight) + 1; // 1 到 maxRight
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const result = left + right;
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problems.push({ type: 'addition', left, right, result });
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} else if (type === 'subtraction-10') {
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// 10以内减法：被减数 ≤ 10
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// left <= 10, left - right = result, result >= 1
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const maxLeft = 10;
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const left = Math.floor(Math.random() * maxLeft) + 1; // 1 到 10
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const maxRight = left - 1; // 确保 result >= 1
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const right = Math.floor(Math.random() * maxRight) + 1; // 1 到 maxRight
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const result = left - right;
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problems.push({ type: 'subtraction', left, right, result });
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} else if (type === 'addition-subtraction-10') {
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// 加减法混合
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if (Math.random() < 0.5) {
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// 加法：和 ≤ 10
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const maxSum = 10;
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const left = Math.floor(Math.random() * (maxSum - 1)) + 1; // 1 到 9
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const maxRight = maxSum - left; // 确保 left + right <= 10
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const right = Math.floor(Math.random() * maxRight) + 1; // 1 到 maxRight
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const result = left + right;
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problems.push({ type: 'addition', left, right, result });
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} else {
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// 减法：被减数 ≤ 10
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const maxLeft = 10;
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const left = Math.floor(Math.random() * maxLeft) + 1; // 1 到 10
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const maxRight = left - 1; // 确保 result >= 1
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const right = Math.floor(Math.random() * maxRight) + 1; // 1 到 maxRight
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const result = left - right;
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problems.push({ type: 'subtraction', left, right, result });
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}
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}
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}
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this.calculationData = { problems };
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this.drawCanvas();
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},
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/**
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* 导出打印
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*/
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exportToPrint() {
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if (!this.canvas || !this.data.hasContent) {
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return;
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}
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if (shouldShowShareGuide()) {
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this.setData({ showShareDialog: true });
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return;
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}
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checkAndSaveImage(this.canvas);
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},
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/**
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* 分享小程序
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*/
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onShareAppMessage() {
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return {
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title: '涂鸦丫-数学学习涂鸦卡',
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path: `/mathPages/addition/addition?id=${this.data.functionId}`,
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imageUrl:
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'https://cdn.joeyone.cn/doodle/share-img/index-share-v2.png',
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};
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},
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onShareTimeline() {
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return {
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title: '涂鸦丫-数学学习涂鸦卡',
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query: `id=${this.data.functionId}`,
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imageUrl:
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'https://cdn.joeyone.cn/doodle/share-img/index-share-v2.png',
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};
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},
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/** 关闭分享引导弹窗 */
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onCloseShareDialog() {
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this.setData({ showShareDialog: false });
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},
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/** 分享成功回调 */
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onShareSuccess() {
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this.setData({ showShareDialog: false });
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if (this.canvas) {
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checkAndSaveImage(this.canvas);
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}
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},
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/** 显示类型选择器 */
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onShowTypeSelector() {
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this.setData({ showTypeSelector: true });
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},
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/** 关闭类型选择器 */
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onCloseTypeSelector() {
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this.setData({ showTypeSelector: false });
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},
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/** 选择类型 */
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onSelectType(event: any) {
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const { name, value } = event.detail;
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this.setData({
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currentType: value,
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currentTypeName: name,
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showTypeSelector: false,
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});
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// 重新生成数据
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this.onRandom();
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},
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});
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