feat: 拼音字母选择

This commit is contained in:
R524809
2026-05-19 18:24:43 +08:00
parent 39b8e01c23
commit b70e54d6b0
40 changed files with 1197 additions and 759 deletions
@@ -0,0 +1,601 @@
/**
* 田字格练字服务
* 根据汉字列表绘制到Canvas
*
* 支持的汉字类型:
* - character:汉字
* - number:数字
* - letter:字母
* - symbol:符号
*/
import { BaseDrawService } from '../../../core/draw/baseDraw';
import { GRID_COLORS, TRACING_COLORS } from '../../../core/data/tracingStyles';
import { CharacterItem } from '../../../types/characterType';
/**
* cnchar-data 坐标系配置
* 参考 hanzi-writer 的实现逻辑
* 字符数据的边界框:左上角 (0, -124),右下角 (1024, 900)
*/
const CHAR_BOUNDS = {
minX: 0,
minY: -124,
maxX: 1024,
maxY: 900,
};
const CHAR_WIDTH = CHAR_BOUNDS.maxX - CHAR_BOUNDS.minX; // 1024
const CHAR_HEIGHT = CHAR_BOUNDS.maxY - CHAR_BOUNDS.minY; // 1024
/**
* 计算缩放变换参数(模仿 cnchar.draw 的 getScalingTransform 函数)
* 用于将 1024x1024 坐标系的字符数据变换到目标画布尺寸
*/
interface ScalingTransform {
xOffset: number;
yOffset: number;
scale: number;
}
function getScalingTransform(
width: number,
height: number,
padding: number,
): ScalingTransform {
// 计算可用空间
const availableWidth = width - 2 * padding;
const availableHeight = height - 2 * padding;
// 计算缩放比例(取较小的比例以确保字符完整显示)
const scaleX = availableWidth / CHAR_WIDTH;
const scaleY = availableHeight / CHAR_HEIGHT;
const scale = Math.min(scaleX, scaleY);
// 计算偏移量(居中显示)
const scaledWidth = CHAR_WIDTH * scale;
const scaledHeight = CHAR_HEIGHT * scale;
const centerX = padding + (availableWidth - scaledWidth) / 2;
const centerY = padding + (availableHeight - scaledHeight) / 2;
// 计算 xOffset 和 yOffset(考虑字符边界框的偏移)
const xOffset = -CHAR_BOUNDS.minX * scale + centerX;
const yOffset = -CHAR_BOUNDS.minY * scale + centerY;
return { xOffset, yOffset, scale };
}
/**
* SVG 路径解析与绘制(支持 M/L/Q/Z 命令)
* 参考 cnchar.draw 的实现,使用 Canvas transform 进行坐标变换
*/
interface DrawSvgPathParams {
ctx: RenderingContext;
pathD: string;
}
function drawSvgPath({ ctx, pathD }: DrawSvgPathParams) {
// 使用正则表达式匹配 SVG 路径命令
// 支持 MmoveTo)、L(lineTo)、Q(二次贝塞尔曲线)、ZclosePath)
const commandRegex = /([MLQZ])([^MLQZ]*?)(?=[MLQZ]|$)/gi;
const commands: Array<{ cmd: string; coords: string }> = [];
let match;
while ((match = commandRegex.exec(pathD)) !== null) {
const cmd = match[1].toUpperCase();
const coords = match[2].trim();
commands.push({ cmd, coords });
}
// 解析坐标的辅助函数
const parseCoords = (coords: string): number[] => {
return coords
.split(/[\s,]+/)
.filter((part) => part.trim() !== '')
.map((part) => parseFloat(part));
};
for (const { cmd, coords } of commands) {
const coordValues = parseCoords(coords);
switch (cmd) {
case 'M':
if (coordValues.length >= 2) {
ctx.moveTo(coordValues[0], coordValues[1]);
}
break;
case 'L':
if (coordValues.length >= 2) {
ctx.lineTo(coordValues[0], coordValues[1]);
}
break;
case 'Q':
// 二次贝塞尔曲线:Q cpx cpy x y
if (coordValues.length >= 4) {
ctx.quadraticCurveTo(
coordValues[0],
coordValues[1],
coordValues[2],
coordValues[3],
);
}
break;
case 'Z':
ctx.closePath();
break;
default:
console.warn(`未知的 SVG 路径命令: ${cmd}`);
}
}
}
interface DrawStrokesParams {
ctx: RenderingContext;
strokes: string[];
offsetX: number;
offsetY: number;
size: number;
uptoInclusive: number;
fillStyle: string;
strokeStyle: string;
lineWidth: number;
}
/**
* 绘制笔画(参考 cnchar.draw 的实现方式)
* 使用 Canvas transform 进行坐标变换,支持 1024x1024 坐标系
*/
function drawStrokes({
ctx,
strokes,
offsetX,
offsetY,
size,
uptoInclusive,
fillStyle,
strokeStyle: _strokeStyle, // 保留接口兼容性,cnchar 模式只使用 fill
lineWidth: _lineWidth, // 保留接口兼容性,cnchar 模式只使用 fill
}: DrawStrokesParams) {
// 抑制未使用变量警告
void _strokeStyle;
void _lineWidth;
// 设置 Canvas 绘制质量
ctx.imageSmoothingEnabled = true;
ctx.imageSmoothingQuality = 'high';
// 设置路径绘制属性
ctx.lineCap = 'round';
ctx.lineJoin = 'round';
ctx.miterLimit = 10;
// 添加内边距:在田字格四周预留空间,避免笔画贴边
const padding = size * 0.1;
// 计算缩放变换参数(参考 cnchar.draw 的 getScalingTransform
const transform = getScalingTransform(size, size, padding);
for (let s = 0; s <= uptoInclusive && s < strokes.length; s++) {
ctx.save();
// 应用变换矩阵(参考 cnchar.draw 的方式)
// 1. 先平移到目标位置
// 2. 再应用 Y 轴翻转和缩放
// transform: translate(xOffset, height - yOffset) scale(scale, -scale)
ctx.translate(
offsetX + transform.xOffset,
offsetY + size - transform.yOffset,
);
ctx.scale(transform.scale, -transform.scale);
// 绘制路径
ctx.beginPath();
drawSvgPath({ ctx, pathD: strokes[s] });
// 使用 fill 绘制(cnchar 只使用 fill
ctx.fillStyle = fillStyle;
ctx.fill();
ctx.restore();
}
}
interface DrawTianZiGridParams {
ctx: RenderingContext;
x: number;
y: number;
size: number;
lineColor?: string;
boldColor?: string;
}
function drawTianZiGrid({
ctx,
x,
y,
size,
lineColor = GRID_COLORS.middleLine,
boldColor = GRID_COLORS.border,
}: DrawTianZiGridParams) {
ctx.strokeStyle = boldColor;
ctx.lineWidth = 1;
ctx.strokeRect(x - size / 2, y - size / 2, size, size);
ctx.strokeStyle = lineColor;
ctx.lineWidth = 1;
ctx.beginPath();
ctx.moveTo(x, y - size / 2);
ctx.lineTo(x, y + size / 2);
ctx.moveTo(x - size / 2, y);
ctx.lineTo(x + size / 2, y);
ctx.stroke();
ctx.closePath();
ctx.strokeStyle = GRID_COLORS.diagonal;
ctx.lineWidth = 1;
ctx.beginPath();
ctx.moveTo(x - size / 2, y - size / 2);
ctx.lineTo(x + size / 2, y + size / 2);
ctx.moveTo(x + size / 2, y - size / 2);
ctx.lineTo(x - size / 2, y + size / 2);
ctx.stroke();
ctx.closePath();
}
class WordDrawService extends BaseDrawService {
constructor(
canvas: Canvas,
ctx: RenderingContext,
options?: Record<string, any>,
) {
options = options || {};
super(canvas, ctx, {
title: '田字格 练 字 贴',
subTitle: '按笔画临摹练习',
...options,
});
}
/**
* 绘制页眉和基础布局
*/
async drawLayout() {
this.setPrintConfig();
this.clear();
this.setPaper();
await this.drawHeader();
this.drawDivider();
await this.drawContentEmpty();
}
async drawContentEmpty() {
this.clearContentArea();
this.drawContent(null);
// await this.drawPrintFooter();
}
/**
* 绘制田字格和练字内容
* @param wordsMap 形如 { "其": ["M.. L.. Z", ...], ... },不超过 10 个汉字
*/
async drawPracticeContent(characters: CharacterItem[]) {
// 清空内容区域(页眉以下的部分)
this.clearContentArea();
// 绘制田字格和练字内容
this.drawContent(characters);
// await this.drawPrintFooter();
}
/**
* 清空内容区域(页眉以下的部分)
*/
private clearContentArea() {
const { ctx } = this;
const contentStartY = this.currentY;
// 清空页眉以下的所有内容(使用逻辑像素)
ctx.fillStyle = '#fff';
ctx.fillRect(
0,
contentStartY,
this.canvasWidth,
this.canvasHeight - contentStartY,
);
}
/**
* 绘制正文内容:两阶段绘制 - 先绘制空田字格,再绘制练字内容
*/
/**
* 绘制正文内容:包括田字格的排布和内容
*
* minGap 作用解释:
* minGap(最小列间距)用于田字格水平方向(每一行格子之间的间距)的初始最小值。它保证多个田字格在一行内不会紧贴排布、而是有一个最小的间隔,整体看起来不会拥挤。后续还会结合画布实际剩余空间动态调整为更合适的实际间距 actualColGap。
*
* rowGap 作用解释:
* rowGap(行间距)用于田字格竖直方向(每一行田字格之间的间隔)的初始最小值。它防止行与行的田字格上下贴得太紧,增加一定的可视呼吸空间。之后同样会结合剩余空间动态调整为实际间距 actualRowGap。
*/
drawContent(characterData: CharacterItem[] | null) {
const { ctx } = this;
// 布局参数(逻辑像素,原始尺寸除以3)
const topGap = 17; // 50/3≈17
const leftMargin = 40; // 120/3=40
const rightMargin = 40; // 120/3=40
const bottomMargin = 40; // 120/3=40
const contentTop = this.currentY + topGap;
const contentWidth = this.canvasWidth - leftMargin - rightMargin;
const contentHeight = this.canvasHeight - contentTop - bottomMargin;
const cellSize = 47; // 140/3≈47
// 统一通过 getMaxGridLayout 获取最大行列数
const { maxRow, maxCol } = this.getMaxGridLayout();
// 动态调整间距以充分利用空间(在允许的最小间距基础上弹性扩展以适配画布)
const actualRowGap =
maxRow > 1 ? (contentHeight - maxRow * cellSize) / (maxRow - 1) : 0;
const actualColGap =
maxCol > 1 ? (contentWidth - maxCol * cellSize) / (maxCol - 1) : 0;
// console.log(`布局信息: 行数=${rowNumber}, 列数=${columnNumber}, 行间距=${actualRowGap.toFixed(1)}, 列间距=${actualColGap.toFixed(1)}`);
// 第一阶段:绘制所有空田字格
this.drawEmptyGrids({
ctx,
startX: leftMargin,
startY: contentTop,
cellSize,
colGap: actualColGap,
rowGap: actualRowGap,
maxRow,
maxCol,
});
if (characterData && characterData.length > 0) {
// 第二阶段:绘制练字内容
this.drawPracticeContentInternal({
ctx,
characterData,
startX: leftMargin,
startY: contentTop,
cellSize,
colGap: actualColGap,
rowGap: actualRowGap,
maxCol,
maxRow,
});
}
}
/**
* 获取当前页面可绘制田字格的最大行数与列数(与绘制使用同一套计算规则)
*/
getMaxGridLayout(): { maxRow: number; maxCol: number } {
// 布局参数需与 drawContent 保持一致(逻辑像素)
const topGap = 17; // 50/3≈17
const leftMargin = 40; // 120/3=40
const rightMargin = 40; // 120/3=40
const bottomMargin = 40; // 120/3=40
const contentTop = this.currentY + topGap;
const contentWidth = this.canvasWidth - leftMargin - rightMargin;
const contentHeight = this.canvasHeight - contentTop - bottomMargin;
const cellSize = 47; // 140/3≈47
const minGap = 8; // 24/3=8
const rowGap = 12; // 36/3=12
const maxCol = Math.max(
1,
Math.floor((contentWidth + minGap) / (cellSize + minGap)),
);
const maxRow = Math.max(
1,
Math.floor((contentHeight + rowGap) / (cellSize + rowGap)),
);
return { maxRow, maxCol };
}
/**
* 绘制空田字格网格
*/
drawEmptyGrids({
ctx,
startX,
startY,
cellSize,
colGap,
rowGap,
maxRow,
maxCol,
}: {
ctx: RenderingContext;
startX: number;
startY: number;
cellSize: number;
colGap: number;
rowGap: number;
maxRow: number; // 行数
maxCol: number; // 列数
}) {
for (let row = 0; row < maxRow; row++) {
for (let col = 0; col < maxCol; col++) {
const x = startX + col * (cellSize + colGap) + cellSize / 2;
const y = startY + row * (cellSize + rowGap) + cellSize / 2;
drawTianZiGrid({ ctx, x, y, size: cellSize });
}
}
}
/**
* 绘制练字内容(参考 template.html 的实现)
*/
drawPracticeContentInternal({
ctx,
characterData,
startX,
startY,
cellSize,
colGap,
rowGap,
maxCol,
maxRow,
}: {
ctx: RenderingContext;
characterData: CharacterItem[];
startX: number;
startY: number;
cellSize: number;
colGap: number;
rowGap: number;
maxCol: number;
maxRow: number;
}) {
let rowIndex = 0;
for (let i = 0; i < characterData.length; i++) {
const item = characterData[i];
const strokes = item.strokes;
const strokeCount = strokes.length;
const totalCells = 1 + strokeCount; // 预览 + 练习
const totalRows = Math.ceil(totalCells / maxCol);
if (rowIndex + totalRows > maxRow) {
break; // 放不下,停止绘制
}
for (let cellIdx = 0; cellIdx < totalCells; cellIdx++) {
const localRowOffset = Math.floor(cellIdx / maxCol);
const localColIndex = cellIdx % maxCol;
const globalRow = rowIndex + localRowOffset;
if (globalRow >= maxRow) {
break;
}
if (cellIdx === 0) {
this.drawPreviewCell({
ctx,
strokes,
startX,
startY,
cellSize,
colGap,
rowGap,
rowIndex: globalRow,
});
} else {
const strokeIndex = cellIdx - 1;
this.drawPracticeCell({
ctx,
strokes,
strokeIndex,
startX,
startY,
cellSize,
colGap,
rowGap,
rowIndex: globalRow,
columnIndex: localColIndex,
});
}
}
rowIndex = rowIndex + totalRows;
}
}
/**
* 绘制预览格(完整汉字)
*/
drawPreviewCell({
ctx,
strokes,
startX,
startY,
cellSize,
colGap,
rowGap,
rowIndex,
}: {
ctx: RenderingContext;
strokes: string[];
startX: number;
startY: number;
cellSize: number;
colGap: number;
rowGap: number;
rowIndex: number;
}) {
const columnIndex = 0;
const x = startX + columnIndex * (cellSize + colGap);
const y = startY + rowIndex * (cellSize + rowGap);
// console.log(`预览格 [${rowIndex}, ${columnIndex}] 坐标: (${x}, ${y}), 笔画数: ${strokes.length}`);
// 绘制完整汉字(深灰色,Fill + Stroke模式)
// 参考一般练字贴:预览字使用深灰色,不是纯黑色,更柔和护眼
drawStrokes({
ctx,
strokes,
offsetX: x,
offsetY: y,
size: cellSize,
uptoInclusive: strokes.length - 1,
fillStyle: TRACING_COLORS.reference,
strokeStyle: TRACING_COLORS.reference,
lineWidth: 1.2,
});
}
/**
* 绘制练习格(逐笔画)
*/
drawPracticeCell({
ctx,
strokes,
strokeIndex,
startX,
startY,
cellSize,
colGap,
rowGap,
rowIndex,
columnIndex,
}: {
ctx: RenderingContext;
strokes: string[];
strokeIndex: number;
startX: number;
startY: number;
cellSize: number;
colGap: number;
rowGap: number;
rowIndex: number;
columnIndex: number;
}) {
const x = startX + columnIndex * (cellSize + colGap);
const y = startY + rowIndex * (cellSize + rowGap);
// console.log(`练习格 [${rowIndex}, ${columnIndex}] 坐标: (${x}, ${y}), 笔画: ${strokeIndex + 1}/${strokes.length}`);
// 绘制到指定笔画的汉字(浅灰色,Fill + Stroke模式)
// 参考一般练字贴:练习字使用浅灰色,便于临摹
drawStrokes({
ctx,
strokes,
offsetX: x,
offsetY: y,
size: cellSize,
uptoInclusive: strokeIndex,
fillStyle: TRACING_COLORS.guide,
strokeStyle: TRACING_COLORS.guide,
lineWidth: 1.2,
});
}
// drawDivider 已在基类中实现,此方法保留以保持兼容
drawDivider() {
super.drawDivider();
}
}
export default WordDrawService;
@@ -1,4 +1,4 @@
import WordDrawService from '../../service/wordDrawService';
import WordDrawService from './draw/wordDrawService';
import { downloadPrint } from '../../utils/downloadPrint';
import { getWordsSvgData } from '../../utils/getWordsSvgJson';
import { WORDS } from '../../core/data/words';
@@ -7,11 +7,11 @@
* - find
*
*
* - TextDrawService
* - WordColoringDraw
* - FindWordDrawService
*/
import TextDrawService from './textDrawService';
import WordColoringDraw from './wordColoringDraw';
import FindWordDrawService from './findWordDrawService';
/**
@@ -49,12 +49,12 @@ export class DrawServiceFactory {
): IDrawService {
switch (templateType) {
case 'grid':
return new TextDrawService(canvas, ctx, options);
return new WordColoringDraw(canvas, ctx, options);
case 'find':
return new FindWordDrawService(canvas, ctx, options);
default:
// 默认使用网格模板
return new TextDrawService(canvas, ctx, options);
return new WordColoringDraw(canvas, ctx, options);
}
}
}
@@ -48,7 +48,7 @@ function calculateCircleCenters(
return centers;
}
class TextDrawService extends BaseDrawService {
class WordColoringDrawService extends BaseDrawService {
colors: string[];
characters: string[];
@@ -204,4 +204,4 @@ class TextDrawService extends BaseDrawService {
}
}
export default TextDrawService;
export default WordColoringDrawService;
@@ -3,7 +3,7 @@ import { WORDS } from '../../core/data/words';
import {
DrawServiceFactory,
type IDrawService,
} from '../shared/draw/drawServiceFactory';
} from './draw/drawServiceFactory';
import { createPage, type CanvasDataState } from '../../base/pageMixin';
import { defaultShareConfig } from '../../config/config';
import {