R524809
474 lines
16 KiB
TypeScript
474 lines
16 KiB
TypeScript
import WordDrawService from '../../service/wordDrawService';
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import { downloadPrint } from '../../utils/downloadPrint';
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import { PAPER_SIZE } from '../../constants/colors';
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import { getWordsSvgData } from '../../utils/getWordsSvgJson';
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import { WORDS } from '../../core/data/words';
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import { CharacterItem } from '../../types/characterType';
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import tracker from '../../utils/tracker';
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import { defaultShareConfig } from '../../config/config';
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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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wordDrawService: null as WordDrawService | null,
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svgWords: {} as Record<string, string[]>,
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maxRow: 0 as number,
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maxCol: 0 as number,
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data: {
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// 最终的汉字列表（合并输入和选择的汉字）
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words: [] as string[],
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// 来自文本框输入的汉字（每次输入替换）
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inputWords: [] as string[],
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// 来自弹窗选择的汉字（追加）
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selectedWords: [] as string[],
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// 输入框的值（用于清空）
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inputValue: '',
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showSelectWordPopup: false,
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showColorPopup: false,
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currentKey: 0,
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currentColor: '',
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boxWidth: 0,
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boxHeight: 0,
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showShareDialog: false, // 显示分享引导弹窗
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},
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async onLoad() {
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await this.loadSvgWords();
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const hasShowPracticeDemo =
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wx.getStorageSync('hasShowPracticeDemo') || false;
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if (!hasShowPracticeDemo) {
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const demoWords = ['好', '好', '学', '习', '天', '天', '向', '上'];
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this.setData(
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{
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words: demoWords,
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inputWords: demoWords,
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selectedWords: [],
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},
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() => {
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wx.setStorageSync('hasShowPracticeDemo', true);
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},
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);
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}
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await this.setCanvasBoxSize();
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await this.initCanvas();
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},
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async loadSvgWords() {
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try {
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wx.showToast({ title: '加载字体中...', icon: 'loading' });
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// 使用带缓存的SVG汉字数据获取函数
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const svgWordsData = await getWordsSvgData();
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this.svgWords = svgWordsData;
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wx.hideToast();
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console.log(
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'SVG汉字数据加载成功，共',
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Object.keys(this.svgWords).length,
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'个汉字',
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);
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const { words } = this.data as any;
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if (words && words.length > 0) {
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this.renderPracticeContent().catch(console.error);
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}
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} catch (error) {
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console.error('加载SVG汉字数据失败:', error);
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wx.hideToast();
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// 显示错误提示
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wx.showModal({
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title: '加载失败',
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content: '无法加载汉字数据，请检查网络连接后重试',
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showCancel: true,
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cancelText: '取消',
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confirmText: '重试',
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success: (res) => {
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if (res.confirm) {
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// 用户点击重试，重新加载
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this.loadSvgWords();
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}
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},
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});
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}
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},
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// 输入组件回调（所见即所得：替换文本框输入的汉字）
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onConfirmInput(e: any) {
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const value: string = (e && e.detail && e.detail.value) || '';
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const text = (value || '').trim();
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// 如果文本框为空，清空输入汉字
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if (!text) {
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const { selectedWords } = this.data as any;
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const updatedWords = [...selectedWords];
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this.setData(
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{
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inputWords: [],
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words: updatedWords,
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inputValue: '', // 同步清空输入框值
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},
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() => {
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this.renderPracticeContent().catch(console.error);
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},
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);
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return;
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}
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if (!this.isChineseText(text)) {
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wx.showToast({ title: '请输入汉字', icon: 'none' });
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return;
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}
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// 1. 解析输入的汉字
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const newInputChars = this.splitToSingleChars(text);
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if (newInputChars.length === 0) {
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wx.showToast({ title: '请输入有效汉字', icon: 'none' });
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return;
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}
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const { selectedWords } = this.data as any;
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// 2. 检查是否超过限制（输入汉字 + 已选择的汉字）
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if (newInputChars.length + selectedWords.length > 11) {
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wx.showToast({
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title: `最多只能添加 11 个字，当前已选择 ${selectedWords.length} 个，输入了 ${newInputChars.length} 个`,
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icon: 'none',
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duration: 3000,
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});
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return;
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}
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// 3. 替换输入汉字（不是追加），合并已选择的汉字
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const updatedWords = [...newInputChars, ...selectedWords];
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// 4. 更新数据并提示（同步更新 inputValue 保持一致）
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this.setData(
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{
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inputWords: newInputChars,
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words: updatedWords,
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inputValue: text, // 同步输入框值
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},
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() => {
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this.renderPracticeContent().catch(console.error);
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},
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);
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// 5. 显示添加结果提示
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wx.showToast({
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title: `已更新输入汉字（${newInputChars.length} 个）`,
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icon: 'none',
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duration: 2000,
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});
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},
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// 选择面板
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openSelectWordPopup() {
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this.setData({ showSelectWordPopup: true });
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},
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closeSelectWordPopup() {
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this.setData({ showSelectWordPopup: false });
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},
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onChangeWord(e: any) {
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const newSelectedWords = e.detail.selectedWords as string[];
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const { inputWords } = this.data as any;
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// 检查是否超过限制
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if (inputWords.length + newSelectedWords.length > 11) {
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wx.showToast({
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title: `最多只能添加 11 个字，当前输入 ${inputWords.length} 个，选择了 ${newSelectedWords.length} 个`,
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icon: 'none',
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duration: 3000,
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});
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return;
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}
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// 合并输入汉字和选择的汉字（求并集）
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const updatedWords = [...inputWords, ...newSelectedWords];
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this.setData(
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{
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selectedWords: newSelectedWords,
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words: updatedWords,
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showSelectWordPopup: false,
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},
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() => {
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if (updatedWords && updatedWords.length > 0) {
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this.renderPracticeContent().catch(console.error);
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}
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},
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);
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},
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// 删除（需要判断删除的是输入汉字还是选择的汉字）
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deleteWordCard(e: any) {
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const { key } = e.detail;
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const { inputWords, selectedWords } = this.data as any;
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// 判断删除的是输入汉字还是选择的汉字
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if (key < inputWords.length) {
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// 删除的是输入汉字
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const nextInputWords = inputWords.filter(
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(_: string, index: number) => index !== key,
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);
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const nextWords = [...nextInputWords, ...selectedWords];
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this.setData(
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{
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inputWords: nextInputWords,
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words: nextWords,
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},
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() => this.renderPracticeContent().catch(console.error),
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);
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} else {
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// 删除的是选择的汉字
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const selectedIndex = key - inputWords.length;
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const nextSelectedWords = selectedWords.filter(
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(_: string, index: number) => index !== selectedIndex,
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);
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const nextWords = [...inputWords, ...nextSelectedWords];
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this.setData(
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{
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selectedWords: nextSelectedWords,
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words: nextWords,
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},
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() => this.renderPracticeContent().catch(console.error),
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);
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}
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},
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// 清空（清空所有来源的汉字：文本框、预览、弹窗选择）
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clearWords() {
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// 清空所有汉字数据
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this.setData(
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{
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words: [],
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inputWords: [],
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selectedWords: [],
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inputValue: '', // 清空输入框
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},
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() => {
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this.renderPracticeContent().catch(console.error);
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},
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);
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// 关闭弹窗（如果打开）
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if (this.data.showSelectWordPopup) {
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this.setData({ showSelectWordPopup: false });
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}
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},
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// 随机生成（取基础分类，过滤为可用SVG字，最多11个）
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refreshWords() {
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// 选取较简单的几个分类（如 0:基础独体字，1:生活高频字，2:自然与动作）
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const candidate = WORDS.slice(0, 3).reduce(
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(acc: string[], c: any) => acc.concat(c.words),
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[] as string[],
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);
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// 去重
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const unique = Array.from(new Set(candidate));
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// 打乱
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const shuffled = unique.sort(() => Math.random() - 0.5);
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// 先取前 11 个
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const picked = shuffled.slice(0, 10);
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// 过滤为支持的SVG字
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const supported = this.getSupportedWords(picked);
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if (supported.length === 0) {
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wx.showToast({
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title: '随机到的字暂不支持，重试一下',
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icon: 'none',
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});
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return;
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}
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this.setData({ words: supported }, () =>
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this.renderPracticeContent().catch(console.error),
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);
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},
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// 校验 & 分割
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isChineseText(text: string): boolean {
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const chineseRegex = /^[\u4e00-\u9fff]+$/;
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return chineseRegex.test(text);
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},
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splitToSingleChars(text: string): string[] {
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const chineseRegex = /[\u4e00-\u9fff]/g;
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const matches = text.match(chineseRegex);
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return matches || [];
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},
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setCanvasBoxSize() {
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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.setData({ boxWidth, boxHeight });
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}
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})
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.exec();
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},
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async initCanvas() {
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return new Promise<void>((resolve) => {
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// 然后初始化canvas
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wx.createSelectorQuery()
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.select('#canvasContent')
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.fields({
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node: true,
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size: true,
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})
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.exec(async (res) => {
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if (res[0] && res[0].node) {
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const canvas = res[0].node;
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const ctx = canvas.getContext('2d');
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if (ctx) {
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this.canvas = canvas;
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this.ctx = ctx;
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this.wordDrawService = new WordDrawService(
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canvas,
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ctx,
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);
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// 初始化时只绘制页眉和布局
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await this.wordDrawService.drawLayout();
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// 绘制完成后计算并缓存最大行列数（与实际绘制一致）
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const { maxRow, maxCol } =
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this.wordDrawService.getMaxGridLayout();
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this.maxRow = maxRow;
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this.maxCol = maxCol;
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// 如果有汉字数据，绘制练字内容
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const { words } = this.data as any;
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if (words && words.length > 0) {
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await this.renderPracticeContent();
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}
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resolve();
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}
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}
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});
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});
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},
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// 绘制练字内容（只绘制田字格和汉字内容）
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async renderPracticeContent() {
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if (!this.canvas || !this.wordDrawService) {
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await this.initCanvas();
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return;
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}
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const { words } = this.data as any;
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if (!words || words.length === 0) {
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await this.wordDrawService.drawContentEmpty();
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return;
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}
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// 检查汉字是否支持
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const supportedWords = this.getSupportedWords(words);
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if (supportedWords.length === 0) {
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wx.showToast({ title: '暂不支持这些汉字', icon: 'none' });
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await this.wordDrawService.drawContentEmpty();
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return;
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}
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// 使用初始化阶段缓存的最大行列数；若未初始化则计算一次并缓存
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let maxRow = this.maxRow;
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let maxCol = this.maxCol;
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if (!maxRow || !maxCol) {
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const layout = this.wordDrawService!.getMaxGridLayout();
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this.maxRow = layout.maxRow;
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this.maxCol = layout.maxCol;
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maxRow = layout.maxRow;
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maxCol = layout.maxCol;
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}
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// 处理布局和生成练字数据（基于实际最大行列数）
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const characterData = this.processCharacterLayout(
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supportedWords,
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maxRow,
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maxCol,
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);
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await this.wordDrawService.drawPracticeContent(characterData);
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},
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/** 检查汉字是否支持，返回支持的汉字列表 */
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getSupportedWords(words: string[]): string[] {
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return words.filter((word) => this.svgWords[word]);
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},
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/** 处理汉字布局，生成练字数据 */
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processCharacterLayout(
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words: string[],
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maxRow: number,
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maxCol: number,
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): CharacterItem[] {
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let rowIndex = 0;
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const characterData: CharacterItem[] = [];
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const boundaryWords: string[] = [];
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// 按顺序处理每个汉字
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words.forEach((word: string) => {
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const strokes = this.svgWords[word];
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const strokeCount = strokes.length;
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const totalCells = 1 + strokeCount + 0; // 预览格 + 练习格 + 空白格
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const totalRows = Math.ceil(totalCells / maxCol);
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// 这里的意思是：把这一个汉字所占的行数（totalRows）累加到 rowIndex 上。
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// 这样 rowIndex 就记录了当前已经排布了多少行，用于判断是否超出了最大允许行数（maxRow）。
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rowIndex = rowIndex + totalRows;
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if (rowIndex <= maxRow) {
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characterData.push({ character: word, strokes });
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} else {
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boundaryWords.push(word);
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}
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});
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// // 提示超出页面的汉字
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// if (showToast && boundaryWords.length > 0) {
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// wx.showToast({
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// title: `练字贴已超过一页，部分汉字未包含在本次生成结果中`,
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// icon: 'none'
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// });
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// }
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return characterData;
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},
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// 下载打印练字贴
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async exportToPrint() {
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await downloadPrint(this.canvas, {
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errorToast: '请先生成练字贴',
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trackerName: '练字贴',
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});
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},
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// 分享功能
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onShareAppMessage() {
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// 上报分享埋点
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tracker.reportShare('练字贴');
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return {
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...defaultShareConfig,
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path: '/pages/copyBook/copyBook',
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};
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},
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onShareTimeline() {
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// 上报分享埋点
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tracker.reportShare('练字贴');
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return {
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...defaultShareConfig,
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query: '/pages/copyBook/copyBook',
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};
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},
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/** 分享成功回调（由组件触发） */
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onShareSuccess() {
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// 只关闭弹窗，不触发下载
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this.setData({ showShareDialog: false });
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},
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});
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