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feat: 绘制基础类重构

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R524809
2026-04-10 15:06:11 +08:00
parent a911da6181
commit e74fd3709c
17 changed files with 1091 additions and 278 deletions
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miniprogram/assets/imgs/doodle-footer.png
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miniprogram/assets/imgs/doodle-mini-code.jpg → miniprogram/assets/imgs/doodle-mini-logo.jpg
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miniprogram/core/draw/backup/baseDraw.ts
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import { PAPER_SIZE } from '../../constants/colors';
import { drawBaseHeader, drawBaseMiniHeader } from './baseHeaderDraw';
/**
* 基础绘制服务
* 包含Paper设置和Header绘制功能，可被所有绘制服务复用
*
* 提供功能：
* - Canvas 初始化和配置
* - Paper 尺寸设置（支持 A4 等标准尺寸）
* - Header 绘制（支持完整 Header 和迷你 Header）
* - 分割线绘制
* - 打印配置管理
*/
export class BaseDrawService {
headerType: PrintHeader = 'wechat';
canvas: WechatMiniprogram.Canvas;
ctx: RenderingContext;
options: Record<string, any>;
paperSize: PaperSize;
currentX: number;
currentY: number;
canvasWidth: number; // 逻辑像素宽度
canvasHeight: number; // 逻辑像素高度
constructor(
canvas: Canvas,
ctx: RenderingContext,
options?: Record<string, any>,
) {
options = options || {};
const { appName, appHint } = getApp().getPrintConfig();
this.canvas = canvas;
this.ctx = ctx;
this.paperSize = 'A4';
this.options = {
appName,
appHint,
title: '看数字，涂一涂',
subTitle: '找一找下面相同的数字，涂上颜色',
...options,
};
this.currentX = 0;
this.currentY = 0;
this.canvasWidth = 0;
this.canvasHeight = 0;
this.setPrintConfig();
}
setPrintConfig() {
const printConfig = getApp().getPrintConfig();
this.headerType = printConfig.header;
this.options.appName = printConfig.appName;
}
/**
* 设置Paper（逻辑像素，尺寸除以3）
*/
setPaper() {
const { ctx, canvas } = this;
const { pixelRatio: dpr } = wx.getWindowInfo();
let { width, height } = PAPER_SIZE[this.paperSize];
this.canvasWidth = width;
this.canvasHeight = height;
// 设置 canvas 为物理像素尺寸（用于高分辨率显示）
const physicalWidth = width * dpr;
const physicalHeight = height * dpr;
canvas.width = physicalWidth;
canvas.height = physicalHeight;
// 重置 transform 并 scale 到逻辑像素
ctx.setTransform(1, 0, 0, 1, 0, 0); // 重置 transform
ctx.scale(dpr, dpr); // scale 到逻辑像素，后续绘制都使用逻辑像素
this.clear();
ctx.fillStyle = '#fff';
// 使用逻辑像素尺寸填充
ctx.fillRect(0, 0, this.canvasWidth, this.canvasHeight);
}
/**
* 清除画布
*/
clear() {
const canvas = this.canvas;
this.ctx.clearRect(0, 0, canvas.width, canvas.height);
}
/**
* 绘制Header（逻辑像素，尺寸除以3）
*/
async drawHeader() {
this.currentX = 25;
this.currentY = 25;
await drawBaseHeader({
canvas: this.canvas,
ctx: this.ctx,
headerType: this.headerType,
options: {
appName: this.options.appName || '涂鸦丫小程序',
appHint: this.options.appHint || '识字|识图|练字|打印',
title: this.options.title || '看数字，涂一涂',
subTitle:
this.options.subTitle || '找一找下面相同的数字，涂上颜色',
},
onHeaderDrawn: (currentY) => {
this.currentY = currentY;
},
});
}
/**
* 绘制迷你Header（逻辑像素，尺寸除以3）
*/
drawMiniHeader() {
drawBaseMiniHeader({
ctx: this.ctx,
canvasWidth: this.canvasWidth,
options: {
appName: this.options.appName || '涂鸦丫小程序',
title: this.options.title || '看数字，涂一涂',
},
onHeaderDrawn: (currentY) => {
console.log('drawMiniHeader currentY', currentY);
this.currentY = currentY;
},
});
}
/**
* 绘制分割线（逻辑像素，尺寸除以3）
*/
drawDivider() {
const { ctx, canvasWidth } = this;
const dividerY = this.currentY;
ctx.strokeStyle = '#000';
ctx.lineWidth = 1;
ctx.beginPath();
ctx.moveTo(24, dividerY);
ctx.lineTo(canvasWidth - 24, dividerY);
ctx.stroke();
this.currentY = dividerY + 10; // 分割线下方10px间距
}
/**
* 绘制虚线分割线（逻辑像素，尺寸除以3）
* @param y 分割线的Y坐标
* @param margin 左右边距，默认为40
* @param color 线条颜色，默认为'#999'
* @param lineWidth 线条宽度，默认为1
*/
drawDashedDivider(
y: number,
margin: number = 40,
color: string = '#999',
lineWidth: number = 1,
) {
const { ctx, canvasWidth } = this;
ctx.strokeStyle = color;
ctx.lineWidth = lineWidth;
ctx.setLineDash([4, 4]); // 虚线
ctx.beginPath();
ctx.moveTo(margin, y);
ctx.lineTo(canvasWidth - margin, y);
ctx.stroke();
ctx.setLineDash([]); // 重置为实线
}
/**
* 绘制线条（逻辑像素，尺寸除以3）
* @param x1 起点X坐标
* @param y1 起点Y坐标
* @param x2 终点X坐标
* @param y2 终点Y坐标
* @param options 可选参数
* @param options.isDashed 是否为虚线，默认为true（虚线）
* @param options.dashPattern 虚线模式，默认为[4, 4]
* @param options.color 线条颜色，默认为'#999'
* @param options.lineWidth 线条宽度，默认为1
*/
drawLine(
x1: number,
y1: number,
x2: number,
y2: number,
options?: {
isDashed?: boolean;
dashPattern?: number[];
color?: string;
lineWidth?: number;
},
): void {
const { ctx } = this;
const {
isDashed = true,
dashPattern = [4, 4],
color = '#999',
lineWidth = 1,
} = options || {};
ctx.strokeStyle = color;
ctx.lineWidth = lineWidth;
// 设置虚线或实线
if (isDashed) {
ctx.setLineDash(dashPattern);
} else {
ctx.setLineDash([]);
}
// 绘制线条
ctx.beginPath();
ctx.moveTo(x1, y1);
ctx.lineTo(x2, y2);
ctx.stroke();
// 重置为实线（避免影响后续绘制）
ctx.setLineDash([]);
}
/**
* 绘制网格线（逻辑像素，尺寸除以3）
* @param gridStartX 网格起始X坐标
* @param gridStartY 网格起始Y坐标
* @param cellWidth 每个格子的宽度
* @param cellHeight 每个格子的高度
* @param cols 列数
* @param rows 行数
*/
drawGridLines(
gridStartX: number,
gridStartY: number,
cellWidth: number,
cellHeight: number,
cols: number,
rows: number,
): void {
const { ctx } = this;
// 在函数内部计算网格总宽度和高度
const gridWidth = cellWidth * cols;
const gridHeight = cellHeight * rows;
ctx.strokeStyle = '#000';
ctx.lineWidth = 1;
ctx.setLineDash([]); // 实线
// 绘制垂直线
for (let i = 0; i <= cols; i++) {
const x = gridStartX + i * cellWidth;
ctx.beginPath();
ctx.moveTo(x, gridStartY);
ctx.lineTo(x, gridStartY + gridHeight);
ctx.stroke();
}
// 绘制水平线
for (let i = 0; i <= rows; i++) {
const y = gridStartY + i * cellHeight;
ctx.beginPath();
ctx.moveTo(gridStartX, y);
ctx.lineTo(gridStartX + gridWidth, y);
ctx.stroke();
}
}
/**
* 绘制圆角矩形框（逻辑像素，尺寸除以3）
* @param x 框的X坐标
* @param y 框的Y坐标
* @param width 框的宽度
* @param height 框的高度
* @param options 可选参数
* @param options.isDashed 是否为虚线，默认为false（实线）
* @param options.radius 圆角半径，默认为10
* @param options.color 线条颜色，默认为'#000'
* @param options.lineWidth 线条宽度，默认为1
*/
drawRoundedRect(
x: number,
y: number,
width: number,
height: number,
options?: {
isDashed?: boolean;
radius?: number;
color?: string;
lineWidth?: number;
},
): void {
const { ctx } = this;
const {
isDashed = false,
radius = 10,
color = '#000',
lineWidth = 1,
} = options || {};
ctx.strokeStyle = color;
ctx.lineWidth = lineWidth;
// 设置虚线或实线
if (isDashed) {
ctx.setLineDash([4, 4]); // 虚线
} else {
ctx.setLineDash([]); // 实线
}
// 绘制圆角矩形
ctx.beginPath();
ctx.moveTo(x + radius, y);
ctx.lineTo(x + width - radius, y);
ctx.quadraticCurveTo(x + width, y, x + width, y + radius);
ctx.lineTo(x + width, y + height - radius);
ctx.quadraticCurveTo(
x + width,
y + height,
x + width - radius,
y + height,
);
ctx.lineTo(x + radius, y + height);
ctx.quadraticCurveTo(x, y + height, x, y + height - radius);
ctx.lineTo(x, y + radius);
ctx.quadraticCurveTo(x, y, x + radius, y);
ctx.closePath();
ctx.stroke();
// 重置为实线（避免影响后续绘制）
ctx.setLineDash([]);
}
/**
* 绘制符号（使用路径绘制）
* @param x 符号中心X坐标
* @param y 符号中心Y坐标
* @param symbol 符号类型：'+', '-', '=', '×', '✓'
* @param size 符号大小
*/
drawSymbol(x: number, y: number, symbol: string, size: number): void {
const { ctx } = this;
ctx.save();
ctx.translate(x, y);
const lineWidth = size * 0.15; // 线条宽度
const halfSize = size / 2;
const strokeLength = halfSize * 0.7; // 线条长度
ctx.strokeStyle = '#000';
ctx.lineWidth = lineWidth;
ctx.lineCap = 'round';
ctx.lineJoin = 'round';
switch (symbol) {
case '+':
// 加号：横线和竖线
ctx.beginPath();
// 横线
ctx.moveTo(-strokeLength, 0);
ctx.lineTo(strokeLength, 0);
// 竖线
ctx.moveTo(0, -strokeLength);
ctx.lineTo(0, strokeLength);
ctx.stroke();
break;
case '-':
// 减号：横线
ctx.beginPath();
ctx.moveTo(-strokeLength, 0);
ctx.lineTo(strokeLength, 0);
ctx.stroke();
break;
case '=':
// 等号：两条横线
const equalsSpacing = size * 0.15; // 两条线之间的间距
ctx.beginPath();
// 上横线
ctx.moveTo(-strokeLength, -equalsSpacing);
ctx.lineTo(strokeLength, -equalsSpacing);
// 下横线
ctx.moveTo(-strokeLength, equalsSpacing);
ctx.lineTo(strokeLength, equalsSpacing);
ctx.stroke();
break;
case '×':
// 乘号：两条斜线
ctx.beginPath();
// 左上到右下
ctx.moveTo(-strokeLength * 0.7, -strokeLength * 0.7);
ctx.lineTo(strokeLength * 0.7, strokeLength * 0.7);
// 右上到左下
ctx.moveTo(strokeLength * 0.7, -strokeLength * 0.7);
ctx.lineTo(-strokeLength * 0.7, strokeLength * 0.7);
ctx.stroke();
break;
case '✓':
// 对号：勾，整体更大，右侧的线更长
const checkScale = 1.2; // 对号整体放大1.2倍
ctx.beginPath();
const checkStartX = -strokeLength * 0.5 * checkScale;
const checkStartY = -strokeLength * 0.2 * checkScale;
const checkMidX = -strokeLength * 0.1 * checkScale;
const checkMidY = strokeLength * 0.3 * checkScale;
const checkEndX = strokeLength * 1.0 * checkScale; // 增加右侧长度
const checkEndY = -strokeLength * 0.4 * checkScale; // 稍微向上调整
ctx.moveTo(checkStartX, checkStartY);
ctx.lineTo(checkMidX, checkMidY);
ctx.lineTo(checkEndX, checkEndY);
ctx.stroke();
break;
default:
// 默认绘制加号
ctx.beginPath();
ctx.moveTo(-strokeLength, 0);
ctx.lineTo(strokeLength, 0);
ctx.moveTo(0, -strokeLength);
ctx.lineTo(0, strokeLength);
ctx.stroke();
}
ctx.restore();
}
/**
* 绘制圆点
* @param ctx 绘制上下文
* @param x 圆点中心X坐标
* @param y 圆点中心Y坐标
* @param radius 圆点半径
* @param fillColor 填充颜色，默认为 '#93D333'
* @param strokeColor 边线颜色，如果传入则绘制边线，宽度为1，默认不绘制
*/
drawDot(
ctx: RenderingContext,
x: number,
y: number,
radius: number,
fillColor?: string,
strokeColor?: string,
) {
ctx.beginPath();
ctx.arc(x, y, radius, 0, Math.PI * 2);
// 绘制填充
ctx.fillStyle = fillColor ?? '#93D333';
ctx.fill();
// 绘制边线（如果提供了边线颜色）
if (strokeColor) {
ctx.strokeStyle = strokeColor;
ctx.lineWidth = 1;
ctx.stroke();
}
}
/**
* 准备绘制（公共初始化逻辑）
* 执行：setPrintConfig -> clear -> setPaper
* 子类可以在调用此方法前后执行自定义逻辑（如数据验证、异步资源加载等）
*/
prepareDraw() {
this.setPrintConfig();
this.clear();
this.setPaper();
}
/**
* 绘制 Header 和 Divider（公共绘制逻辑）
* 根据 headerType 自动选择绘制完整 Header 或迷你 Header，然后绘制分割线
*/
async drawHeaderAndDivider() {
// 绘制Header
if (this.headerType !== 'minimal') {
await this.drawHeader();
} else {
this.drawMiniHeader();
}
// 绘制内容区域分割线
this.drawDivider();
}
/**
* 绘制空白方框（边框1px，#999，无填充，不显示数字）
*/
drawBox(
ctx: RenderingContext,
x: number,
y: number,
width: number,
height: number,
color: string = '#999',
lineWidth: number = 1,
) {
// 绘制方框边框（1px，#999，无填充）
ctx.strokeStyle = color;
ctx.lineWidth = lineWidth;
ctx.setLineDash([]);
ctx.strokeRect(x, y, width, height);
}
/**
* 绘制正方形方框（调用drawBox，减少参数）
* @param ctx 渲染上下文
* @param x 方框左上角x
* @param y 方框左上角y
* @param size 方框边长
* @param color 边框颜色（可选，默认为#999）
* @param lineWidth 线宽（可选，默认为1）
*/
drawSquareBox(
ctx: RenderingContext,
x: number,
y: number,
size: number,
color: string = '#999',
lineWidth: number = 1,
) {
this.drawBox(ctx, x, y, size, size, color, lineWidth);
}
}
miniprogram/core/draw/baseHeaderDraw.ts → miniprogram/core/draw/backup/baseHeaderDraw.ts
View File
miniprogram/core/draw/baseDraw.ts
+78 -39
View File
@@ -1,5 +1,6 @@
import { PAPER_SIZE } from '../../constants/colors';
import { drawBaseHeader, drawBaseMiniHeader } from './baseHeaderDraw';
import { getImage } from '../../utils/index';
import drawHeader from './drawHeader';
/**
* 基础绘制服务
@@ -8,12 +9,14 @@ import { drawBaseHeader, drawBaseMiniHeader } from './baseHeaderDraw';
* 提供功能：
* - Canvas 初始化和配置
* - Paper 尺寸设置（支持 A4 等标准尺寸）
* - Header 绘制（支持完整 Header 和迷你 Header）
* - Header 绘制（统一打印纸页眉）
* - 分割线绘制
* - 打印配置管理
*/
const LINE_COLOR = 'rgba(50, 46, 37, 0.4)';
const LINE_WIDTH = 3;
export class BaseDrawService {
headerType: PrintHeader = 'wechat';
canvas: WechatMiniprogram.Canvas;
ctx: RenderingContext;
options: Record<string, any>;
@@ -22,6 +25,8 @@ export class BaseDrawService {
currentY: number;
canvasWidth: number; // 逻辑像素宽度
canvasHeight: number; // 逻辑像素高度
/** 紧跟在 drawHeader 之后的第一次 drawDivider 不画线（页眉已含底部分割线） */
private _suppressNextDividerLine = false;
constructor(
canvas: Canvas,
@@ -37,20 +42,18 @@ export class BaseDrawService {
appName,
appHint,
title: '看数字，涂一涂',
subTitle: '找一找下面相同的数字，涂上颜色',
...options,
};
this.currentX = 0;
this.currentY = 0;
this.canvasWidth = 0;
this.canvasHeight = 0;
this._suppressNextDividerLine = false;
this.setPrintConfig();
}
setPrintConfig() {
const printConfig = getApp().getPrintConfig();
this.headerType = printConfig.header;
this.options.appName = printConfig.appName;
}
@@ -93,51 +96,95 @@ export class BaseDrawService {
* 绘制Header（逻辑像素，尺寸除以3）
*/
async drawHeader() {
this.currentX = 25;
this.currentY = 25;
await drawBaseHeader({
this.currentX = 24;
this.currentY = 14;
await drawHeader({
canvas: this.canvas,
ctx: this.ctx,
headerType: this.headerType,
canvasWidth: this.canvasWidth,
options: {
appName: this.options.appName || '涂鸦丫小程序',
appHint: this.options.appHint || '识字|识图|练字|打印',
title: this.options.title || '看数字，涂一涂',
subTitle:
this.options.subTitle || '找一找下面相同的数字，涂上颜色',
},
onHeaderDrawn: (currentY) => {
onHeaderDrawn: (currentY: number) => {
this.currentY = currentY;
this._suppressNextDividerLine = true;
},
});
}
/**
* 绘制迷你Header（逻辑像素，尺寸除以3）
* 页脚：顶部分割线 + 居中 `doodle-footer.png`（小鸭与「涂鸦丫」品牌图）。
* 图片底边与纸张底边留白对齐，便于「探头」视觉。请在整页正文绘制完成后调用，避免被内容覆盖。
*/
drawMiniHeader() {
drawBaseMiniHeader({
ctx: this.ctx,
canvasWidth: this.canvasWidth,
options: {
appName: this.options.appName || '涂鸦丫小程序',
title: this.options.title || '看数字，涂一涂',
},
onHeaderDrawn: (currentY) => {
console.log('drawMiniHeader currentY', currentY);
this.currentY = currentY;
},
});
async drawPrintFooter(): Promise<void> {
const { ctx, canvasWidth, canvasHeight } = this;
const margin = 24;
const bottomMargin = 2;
const lineGapAboveImg = 10;
const maxImgW = canvasWidth - margin * 2;
const maxImgH = 40;
let dw = maxImgW;
let dh = maxImgH;
try {
const image = (await getImage(
this.canvas,
'/assets/imgs/doodle-footer.png',
)) as WechatMiniprogram.Image;
const nw = image.width || 2;
const nh = image.height || 1;
const aspect = nw / nh;
dh = Math.min(maxImgH, maxImgW / aspect);
dw = dh * aspect;
if (dw > maxImgW) {
dw = maxImgW;
dh = dw / aspect;
}
const imgX = (canvasWidth - dw) / 2;
const imgY = canvasHeight - bottomMargin - dh;
const lineY = imgY - lineGapAboveImg;
ctx.save();
ctx.strokeStyle = LINE_COLOR;
ctx.lineWidth = LINE_WIDTH;
ctx.lineCap = 'round';
ctx.beginPath();
ctx.moveTo(margin, lineY);
ctx.lineTo(canvasWidth - margin, lineY);
ctx.stroke();
ctx.restore();
ctx.drawImage(image, imgX, imgY, dw, dh);
} catch {
const lineY =
canvasHeight - bottomMargin - maxImgH - lineGapAboveImg;
ctx.save();
ctx.strokeStyle = LINE_COLOR;
ctx.lineWidth = LINE_WIDTH;
ctx.lineCap = 'round';
ctx.beginPath();
ctx.moveTo(margin, lineY);
ctx.lineTo(canvasWidth - margin, lineY);
ctx.stroke();
ctx.restore();
}
}
/**
* 绘制分割线（逻辑像素，尺寸除以3）
*/
drawDivider() {
if (this._suppressNextDividerLine) {
this._suppressNextDividerLine = false;
return;
}
const { ctx, canvasWidth } = this;
const dividerY = this.currentY;
ctx.strokeStyle = '#000';
ctx.strokeStyle = LINE_COLOR;
ctx.lineWidth = 1;
ctx.beginPath();
ctx.moveTo(24, dividerY);
@@ -475,18 +522,10 @@ export class BaseDrawService {
}
/**
* 绘制 Header 和 Divider（公共绘制逻辑）
* 根据 headerType 自动选择绘制完整 Header 或迷你 Header，然后绘制分割线
* 绘制统一页眉；紧随其后的 drawDivider 会跳过首条分割线（页眉已含底部灰线）。
*/
async drawHeaderAndDivider() {
// 绘制Header
if (this.headerType !== 'minimal') {
await this.drawHeader();
} else {
this.drawMiniHeader();
}
// 绘制内容区域分割线
this.drawDivider();
}
miniprogram/core/draw/drawHeader.ts
+111
View File
@@ -0,0 +1,111 @@
import { getMiniCodeImage } from '../../utils/index';
/**
* 统一打印纸页眉（与 UI 稿一致：左上 Logo、居中主标题、姓名/日期/得分、底部分割线）
*/
interface DrawBaseHeaderParams {
canvas: WechatMiniprogram.Canvas;
ctx: RenderingContext;
canvasWidth: number;
options: {
/** 练习纸主标题，如「数一数，连一连」 */
title: string;
};
onHeaderDrawn?: (currentY: number) => void;
}
const MARGIN_X = 24;
const LOGO_SIZE = 68;
const LOGO_X = MARGIN_X;
const LOGO_Y = 14;
const TITLE_FONT = 'bold 20px "Microsoft Yahei"';
const META_FONT = '14px "Microsoft Yahei"';
const META_FONT_PX = 12;
const META_UNDERLINE_GAP = 3;
const TITLE_COLOR = '#322E25';
const LINE_COLOR = 'rgba(50, 46, 37, 0.4)';
const LINE_WIDTH = 3;
const META_COLOR = '#7C766A';
const META_ROW_MARGIN_X = 130;
function drawMetaField(
ctx: RenderingContext,
label: string,
x: number,
y: number,
underlineRight: number,
) {
ctx.font = META_FONT;
ctx.fillStyle = META_COLOR;
ctx.textAlign = 'left';
ctx.textBaseline = 'top';
ctx.fillText(label, x, y);
const metrics = ctx.measureText(label);
const labelW = metrics.width;
// textBaseline=top 时 y 是字顶，不是垂直中心；下划线应从字底开始（约一行字高，与 META_FONT 字号一致）
const lineY = y + META_FONT_PX + META_UNDERLINE_GAP;
ctx.strokeStyle = '#E5DCC9';
ctx.lineWidth = 1;
ctx.beginPath();
ctx.moveTo(x + labelW + 2, lineY);
ctx.lineTo(Math.max(x + labelW + 2, underlineRight), lineY);
ctx.stroke();
}
export default async function drawHeader({
canvas,
ctx,
canvasWidth,
options,
onHeaderDrawn,
}: DrawBaseHeaderParams): Promise<void> {
const { title } = options;
const image = await getMiniCodeImage(canvas);
ctx.drawImage(image, LOGO_X, LOGO_Y, LOGO_SIZE, LOGO_SIZE);
ctx.font = TITLE_FONT;
ctx.fillStyle = TITLE_COLOR;
ctx.textAlign = 'center';
// top：y 为文本顶边；勿用 alphabetic，否则 y 是基线，大字会大量画在 y 上方导致裁出纸上沿
ctx.textBaseline = 'top';
const titleY = 22;
ctx.fillText(title, canvasWidth / 2, titleY);
const metaRowY = 65;
const innerLeft = META_ROW_MARGIN_X;
const innerRight = canvasWidth - META_ROW_MARGIN_X;
const innerW = innerRight - innerLeft;
const colW = innerW / 3;
drawMetaField(ctx, '姓名:', innerLeft + 4, metaRowY, innerLeft + colW - 8);
drawMetaField(
ctx,
'日期:',
innerLeft + colW + 4,
metaRowY,
innerLeft + 2 * colW - 8,
);
drawMetaField(
ctx,
'得分:',
innerLeft + 2 * colW + 4,
metaRowY,
innerRight - 4,
);
ctx.save();
const separatorY = 96;
ctx.strokeStyle = LINE_COLOR;
ctx.lineWidth = LINE_WIDTH;
ctx.lineCap = 'round';
ctx.beginPath();
ctx.moveTo(MARGIN_X, separatorY);
ctx.lineTo(canvasWidth - MARGIN_X, separatorY);
ctx.stroke();
ctx.restore();
const contentStartY = separatorY + 14;
if (onHeaderDrawn) {
onHeaderDrawn(contentStartY);
}
}
miniprogram/pages/copyBook/copyBook.ts
+3 -3
View File
@@ -362,7 +362,7 @@ Page({
const { words } = this.data as any;
if (!words || words.length === 0) {
this.wordDrawService.drawContentEmpty();
await this.wordDrawService.drawContentEmpty();
return;
}
@@ -370,7 +370,7 @@ Page({
const supportedWords = this.getSupportedWords(words);
if (supportedWords.length === 0) {
wx.showToast({ title: '暂不支持这些汉字', icon: 'none' });
this.wordDrawService.drawContentEmpty();
await this.wordDrawService.drawContentEmpty();
return;
}
@@ -391,7 +391,7 @@ Page({
maxRow,
maxCol,
);
this.wordDrawService.drawPracticeContent(characterData);
await this.wordDrawService.drawPracticeContent(characterData);
},
/** 检查汉字是否支持，返回支持的汉字列表 */
miniprogram/service/drawServiceFactory.ts
+13
View File
@@ -1,3 +1,16 @@
/**
* 识字绘制服务工厂
* 根据模板类型创建对应的绘制服务实例
*
* 支持的模板类型：
* - grid：网格模板
* - find：找字模板
*
* 支持的绘制服务：
* - TextDrawService：文字涂色服务
* - FindWordDrawService：找字涂色服务
*/
import TextDrawService from './textDrawService';
import FindWordDrawService from './findWordDrawService';
miniprogram/service/drawShape.ts
+280 -58
View File
@@ -1,9 +1,36 @@
/**
* 图形涂色方法
* 根据图形类型绘制到Canvas
*
* 支持的图形类型：
* - circle：圆形
* - ellipse：椭圆
* - square：正方形
* - rectangle：矩形
* - triangle：三角形
* - parallelogram：平行四边形
* - diamond：菱形
* - trapezoid：梯形
* - pentagon：五边形
* - hexagon：六边形
* - pentagram：五角星
* - heart：心形
* - semicircle：半圆
* - sector：扇形
* - ring：圆环
*/
import { ShapeCard } from '../constants/shapes';
// 绘制各种图形的辅助函数
// 绘制圆形
function drawCircle(ctx: RenderingContext, x: number, y: number, radius: number, fillColor: string) {
function drawCircle(
ctx: RenderingContext,
x: number,
y: number,
radius: number,
fillColor: string,
) {
ctx.beginPath();
ctx.arc(x, y, radius, 0, Math.PI * 2);
if (fillColor !== 'transparent') {
@@ -16,7 +43,14 @@ function drawCircle(ctx: RenderingContext, x: number, y: number, radius: number,
}
// 绘制椭圆形
function drawEllipse(ctx: RenderingContext, x: number, y: number, rx: number, ry: number, fillColor: string) {
function drawEllipse(
ctx: RenderingContext,
x: number,
y: number,
rx: number,
ry: number,
fillColor: string,
) {
ctx.beginPath();
ctx.ellipse(x, y, rx, ry, 0, 0, Math.PI * 2);
if (fillColor !== 'transparent') {
@@ -29,7 +63,13 @@ function drawEllipse(ctx: RenderingContext, x: number, y: number, rx: number, ry
}
// 绘制正方形
function drawSquare(ctx: RenderingContext, x: number, y: number, size: number, fillColor: string) {
function drawSquare(
ctx: RenderingContext,
x: number,
y: number,
size: number,
fillColor: string,
) {
if (fillColor !== 'transparent') {
ctx.fillStyle = fillColor;
ctx.fillRect(x - size / 2, y - size / 2, size, size);
@@ -40,7 +80,14 @@ function drawSquare(ctx: RenderingContext, x: number, y: number, size: number, f
}
// 绘制矩形
function drawRectangle(ctx: RenderingContext, x: number, y: number, width: number, height: number, fillColor: string) {
function drawRectangle(
ctx: RenderingContext,
x: number,
y: number,
width: number,
height: number,
fillColor: string,
) {
if (fillColor !== 'transparent') {
ctx.fillStyle = fillColor;
ctx.fillRect(x - width / 2, y - height / 2, width, height);
@@ -51,7 +98,14 @@ function drawRectangle(ctx: RenderingContext, x: number, y: number, width: numbe
}
// 绘制三角形（可指定类型：钝角、直角、锐角）
function drawTriangle(ctx: RenderingContext, x: number, y: number, size: number, type: string, fillColor: string) {
function drawTriangle(
ctx: RenderingContext,
x: number,
y: number,
size: number,
type: string,
fillColor: string,
) {
ctx.beginPath();
switch (type) {
@@ -84,7 +138,14 @@ function drawTriangle(ctx: RenderingContext, x: number, y: number, size: number,
}
// 绘制平行四边形
function drawParallelogram(ctx: RenderingContext, x: number, y: number, width: number, height: number, fillColor: string) {
function drawParallelogram(
ctx: RenderingContext,
x: number,
y: number,
width: number,
height: number,
fillColor: string,
) {
const offset = width * 0.2;
ctx.beginPath();
ctx.moveTo(x - width / 2 + offset, y - height / 2);
@@ -102,7 +163,13 @@ function drawParallelogram(ctx: RenderingContext, x: number, y: number, width: n
}
// 绘制菱形
function drawDiamond(ctx: RenderingContext, x: number, y: number, size: number, fillColor: string) {
function drawDiamond(
ctx: RenderingContext,
x: number,
y: number,
size: number,
fillColor: string,
) {
// 参考SVG: <polygon points="50,15 70,50 50,85 30,50"/>
// 以(x, y)为中心，size为半高，按SVG比例映射四个点
// SVG中心(50,50)，顶点(50,15)，右(70,50)，下(50,85)，左(30,50)
@@ -133,7 +200,14 @@ function drawDiamond(ctx: RenderingContext, x: number, y: number, size: number,
// 绘制梯形
// 保证绘制的是等腰梯形：上下底居中，左右腰等长
function drawTrapezoid(ctx: RenderingContext, x: number, y: number, width: number, height: number, fillColor: string) {
function drawTrapezoid(
ctx: RenderingContext,
x: number,
y: number,
width: number,
height: number,
fillColor: string,
) {
// topWidth 为上底宽度，width 为下底宽度
const topWidth = width * 0.6; // 上底
const bottomWidth = width; // 下底
@@ -160,7 +234,14 @@ function drawTrapezoid(ctx: RenderingContext, x: number, y: number, width: numbe
}
// 绘制多边形
function drawPolygon(ctx: RenderingContext, x: number, y: number, radius: number, sides: number, fillColor: string) {
function drawPolygon(
ctx: RenderingContext,
x: number,
y: number,
radius: number,
sides: number,
fillColor: string,
) {
ctx.beginPath();
for (let i = 0; i < sides; i++) {
const angle = (i * 2 * Math.PI) / sides - Math.PI / 2;
@@ -181,7 +262,14 @@ function drawPolygon(ctx: RenderingContext, x: number, y: number, radius: number
// 绘制星形（五角星等）
// 按SVG <polygon points="50,20 61,42 85,44 67,60 71,85 50,75 29,85 33,60 15,44 39,42"> 路径绘制五角星
function drawStar(ctx: RenderingContext, x: number, y: number, radius: number, points: number, fillColor: string) {
function drawStar(
ctx: RenderingContext,
x: number,
y: number,
radius: number,
points: number,
fillColor: string,
) {
// SVG原始点
const svgPoints = [
[50, 20],
@@ -193,7 +281,7 @@ function drawStar(ctx: RenderingContext, x: number, y: number, radius: number, p
[29, 85],
[33, 60],
[15, 44],
[39, 42]
[39, 42],
];
// SVG中心(50,50)，最大半径约为35（从50,50到15,44的距离），SVG坐标范围大致为[15,85]
// 归一化到以(x, y)为中心，radius为最大半径
@@ -202,8 +290,8 @@ function drawStar(ctx: RenderingContext, x: number, y: number, radius: number, p
const svgRadius = 35; // 50-15=35
ctx.beginPath();
svgPoints.forEach(([px, py], idx) => {
const nx = x + (px - svgCenterX) / svgRadius * radius;
const ny = y + (py - svgCenterY) / svgRadius * radius;
const nx = x + ((px - svgCenterX) / svgRadius) * radius;
const ny = y + ((py - svgCenterY) / svgRadius) * radius;
if (idx === 0) ctx.moveTo(nx, ny);
else ctx.lineTo(nx, ny);
});
@@ -218,7 +306,13 @@ function drawStar(ctx: RenderingContext, x: number, y: number, radius: number, p
}
// 绘制爱心
function drawHeart(ctx: RenderingContext, x: number, y: number, size: number, fillColor: string) {
function drawHeart(
ctx: RenderingContext,
x: number,
y: number,
size: number,
fillColor: string,
) {
// 放大爱心：将原本的缩放比例从60缩小为50，使爱心整体变大
// 以SVG路径为参考，原始SVG中心为(50,50)，宽高约为60x60
// 这里size为整体缩放，x,y为中心点
@@ -226,33 +320,17 @@ function drawHeart(ctx: RenderingContext, x: number, y: number, size: number, fi
// 归一化函数
const scale = 40; // 原来是60，改为50，放大
function tx(px: number) {
return x + (px - 50) / scale * size;
return x + ((px - 50) / scale) * size;
}
function ty(py: number) {
return y + (py - 50) / scale * size;
return y + ((py - 50) / scale) * size;
}
ctx.beginPath();
ctx.moveTo(tx(50), ty(35));
ctx.bezierCurveTo(
tx(35), ty(20),
tx(20), ty(35),
tx(25), ty(50)
);
ctx.bezierCurveTo(
tx(30), ty(65),
tx(50), ty(80),
tx(50), ty(80)
);
ctx.bezierCurveTo(
tx(50), ty(80),
tx(70), ty(65),
tx(75), ty(50)
);
ctx.bezierCurveTo(
tx(80), ty(35),
tx(65), ty(20),
tx(50), ty(35)
);
ctx.bezierCurveTo(tx(35), ty(20), tx(20), ty(35), tx(25), ty(50));
ctx.bezierCurveTo(tx(30), ty(65), tx(50), ty(80), tx(50), ty(80));
ctx.bezierCurveTo(tx(50), ty(80), tx(70), ty(65), tx(75), ty(50));
ctx.bezierCurveTo(tx(80), ty(35), tx(65), ty(20), tx(50), ty(35));
ctx.closePath();
if (fillColor !== 'transparent') {
ctx.fillStyle = fillColor;
@@ -264,7 +342,13 @@ function drawHeart(ctx: RenderingContext, x: number, y: number, size: number, fi
}
// 绘制半圆
function drawSemicircle(ctx: RenderingContext, x: number, y: number, radius: number, fillColor: string) {
function drawSemicircle(
ctx: RenderingContext,
x: number,
y: number,
radius: number,
fillColor: string,
) {
const verticalOffset = radius * 0.5;
y = y + verticalOffset;
ctx.beginPath();
@@ -282,14 +366,27 @@ function drawSemicircle(ctx: RenderingContext, x: number, y: number, radius: num
}
// 绘制扇形，圆弧在正上方
function drawSector(ctx: RenderingContext, x: number, y: number, radius: number, fillColor: string) {
function drawSector(
ctx: RenderingContext,
x: number,
y: number,
radius: number,
fillColor: string,
) {
// 为了让扇形垂直方向居中，需要将整个扇形向下平移一定距离
// 扇形的质心大约在半径的 0.6 倍处（120°扇形），这里经验值调整
const verticalOffset = radius * 0.5;
ctx.beginPath();
ctx.moveTo(x, y + verticalOffset);
// 扇形圆弧从左上(-135°)到右上(-45°)，即从 -3/4π 到 -1/4π，圆弧在正上方
ctx.arc(x, y + verticalOffset, radius, -3 * Math.PI / 4, -Math.PI / 4, false);
ctx.arc(
x,
y + verticalOffset,
radius,
(-3 * Math.PI) / 4,
-Math.PI / 4,
false,
);
ctx.closePath();
if (fillColor !== 'transparent') {
ctx.fillStyle = fillColor;
@@ -301,7 +398,13 @@ function drawSector(ctx: RenderingContext, x: number, y: number, radius: number,
}
// 绘制圆环（修正避免中间出现一条线）
function drawRing(ctx: RenderingContext, x: number, y: number, radius: number, fillColor: string) {
function drawRing(
ctx: RenderingContext,
x: number,
y: number,
radius: number,
fillColor: string,
) {
const innerRadius = radius * 0.5;
ctx.save();
ctx.beginPath();
@@ -330,7 +433,14 @@ function drawRing(ctx: RenderingContext, x: number, y: number, radius: number, f
* @param size 图形大小
* @param fillColor 填充颜色
*/
export function drawShape(ctx: RenderingContext, shape: ShapeCard, x: number, y: number, size: number, fillColor: string) {
export function drawShape(
ctx: RenderingContext,
shape: ShapeCard,
x: number,
y: number,
size: number,
fillColor: string,
) {
ctx.save();
ctx.translate(x, y);
@@ -339,59 +449,171 @@ export function drawShape(ctx: RenderingContext, shape: ShapeCard, x: number, y:
switch (shape.id) {
case 'circle':
drawCircle(ctx, 0, 0, radius, shouldFill ? fillColor : 'transparent');
drawCircle(
ctx,
0,
0,
radius,
shouldFill ? fillColor : 'transparent',
);
break;
case 'ellipse':
drawEllipse(ctx, 0, 0, radius * 0.8, radius * 0.5, shouldFill ? fillColor : 'transparent');
drawEllipse(
ctx,
0,
0,
radius * 0.8,
radius * 0.5,
shouldFill ? fillColor : 'transparent',
);
break;
case 'square':
drawSquare(ctx, 0, 0, radius * 1.6, shouldFill ? fillColor : 'transparent');
drawSquare(
ctx,
0,
0,
radius * 1.6,
shouldFill ? fillColor : 'transparent',
);
break;
case 'rectangle':
drawRectangle(ctx, 0, 0, radius * 1.8, radius * 1.2, shouldFill ? fillColor : 'transparent');
drawRectangle(
ctx,
0,
0,
radius * 1.8,
radius * 1.2,
shouldFill ? fillColor : 'transparent',
);
break;
case 'obtuse-triangle':
drawTriangle(ctx, 0, 0, radius, 'obtuse', shouldFill ? fillColor : 'transparent');
drawTriangle(
ctx,
0,
0,
radius,
'obtuse',
shouldFill ? fillColor : 'transparent',
);
break;
case 'right-triangle':
drawTriangle(ctx, 0, 0, radius, 'right', shouldFill ? fillColor : 'transparent');
drawTriangle(
ctx,
0,
0,
radius,
'right',
shouldFill ? fillColor : 'transparent',
);
break;
case 'acute-triangle':
drawTriangle(ctx, 0, 0, radius, 'acute', shouldFill ? fillColor : 'transparent');
drawTriangle(
ctx,
0,
0,
radius,
'acute',
shouldFill ? fillColor : 'transparent',
);
break;
case 'parallelogram':
drawParallelogram(ctx, 0, 0, radius * 1.6, radius * 1.2, shouldFill ? fillColor : 'transparent');
drawParallelogram(
ctx,
0,
0,
radius * 1.6,
radius * 1.2,
shouldFill ? fillColor : 'transparent',
);
break;
case 'diamond':
drawDiamond(ctx, 0, 0, radius, shouldFill ? fillColor : 'transparent');
drawDiamond(
ctx,
0,
0,
radius,
shouldFill ? fillColor : 'transparent',
);
break;
case 'trapezoid':
drawTrapezoid(ctx, 0, 0, radius * 1.6, radius * 1.2, shouldFill ? fillColor : 'transparent');
drawTrapezoid(
ctx,
0,
0,
radius * 1.6,
radius * 1.2,
shouldFill ? fillColor : 'transparent',
);
break;
case 'pentagon':
drawPolygon(ctx, 0, 0, radius, 5, shouldFill ? fillColor : 'transparent');
drawPolygon(
ctx,
0,
0,
radius,
5,
shouldFill ? fillColor : 'transparent',
);
break;
case 'hexagon':
drawPolygon(ctx, 0, 0, radius, 6, shouldFill ? fillColor : 'transparent');
drawPolygon(
ctx,
0,
0,
radius,
6,
shouldFill ? fillColor : 'transparent',
);
break;
case 'pentagram':
drawStar(ctx, 0, 0, radius, 5, shouldFill ? fillColor : 'transparent');
drawStar(
ctx,
0,
0,
radius,
5,
shouldFill ? fillColor : 'transparent',
);
break;
case 'heart':
drawHeart(ctx, 0, 0, radius, shouldFill ? fillColor : 'transparent');
drawHeart(
ctx,
0,
0,
radius,
shouldFill ? fillColor : 'transparent',
);
break;
case 'semicircle':
drawSemicircle(ctx, 0, 0, radius, shouldFill ? fillColor : 'transparent');
drawSemicircle(
ctx,
0,
0,
radius,
shouldFill ? fillColor : 'transparent',
);
break;
case 'sector':
drawSector(ctx, 0, 0, radius, shouldFill ? fillColor : 'transparent');
drawSector(
ctx,
0,
0,
radius,
shouldFill ? fillColor : 'transparent',
);
break;
case 'ring':
drawRing(ctx, 0, 0, radius, shouldFill ? fillColor : 'transparent');
break;
default:
// 默认绘制圆形
drawCircle(ctx, 0, 0, radius, shouldFill ? fillColor : 'transparent');
drawCircle(
ctx,
0,
0,
radius,
shouldFill ? fillColor : 'transparent',
);
}
ctx.restore();
miniprogram/service/findWordDrawService.ts
+13 -5
View File
@@ -1,3 +1,15 @@
/**
* 找字涂色服务
* 根据模板类型绘制到Canvas
*
* 支持的模板类型：
* - grid：网格模板
* - find：找字模板
*
* 支持的绘制服务：
* - TextDrawService：文字涂色服务
* - FindWordDrawService：找字涂色服务
*/
import { BaseDrawService } from '../core/draw/baseDraw';
import { POSITION_TEMPLATES } from './findWordTemplate';
@@ -85,16 +97,12 @@ class FindWordDrawService extends BaseDrawService {
this.clear();
this.setPaper();
// 绘制Header
if (this.headerType !== 'minimal') {
await this.drawHeader();
} else {
this.drawMiniHeader();
}
// 找字模板没有 drawLegend 部分
this.drawDivider();
this.drawContent();
await this.drawPrintFooter();
}
drawContent() {
miniprogram/service/findWordTemplate.ts
+4
View File
@@ -1,3 +1,7 @@
/**
* 找字模板
* 包含多个模板，每个模板包含多个位置，每个位置包含x和y坐标
*/
export const POSITION_TEMPLATES: Array<Array<{ x: number; y: number }>> = [
// 模板1：椭圆形分布-上下更密集 28个位置，相邻间距约100-150px
[
miniprogram/service/headerDrawService.ts
-132
View File
@@ -1,132 +0,0 @@
import { getMiniCodeImage, getImage } from '../utils/index';
/**
* 绘制页眉的参数接口
*/
interface DrawHeaderParams {
canvas: WechatMiniprogram.Canvas;
ctx: RenderingContext;
headerType: PrintHeader;
options: {
appName: string;
appHint: string;
title: string;
subTitle: string;
};
onHeaderDrawn?: (currentY: number) => void; // 绘制完成后的回调，用于设置 currentY 和绘制分割线
}
/**
* 绘制完整页眉（包含 Logo、应用名称、提示、标题、副标题）
*/
export async function drawHeader({
canvas,
ctx,
headerType,
options,
onHeaderDrawn,
}: DrawHeaderParams): Promise<void> {
const { appName, appHint, title, subTitle } = options;
let titleX = 80 + 200 + 48; // currentX + logoWidth + spacing
const titleY = 80;
const logoX = 80;
const logoY = 60;
const logoWidth = 200;
const logoHeight = 200;
// 根据 headerType 绘制 Logo 或调整标题位置
switch (headerType) {
case 'LogoImage': {
const image = await getImage(
canvas,
'/assets/imgs/doodle-logo.png',
);
ctx.drawImage(image, logoX, logoY, logoWidth, logoHeight);
break;
}
case 'noLogoImage': {
titleX = 120;
break;
}
case 'minimal': {
titleX = 120;
break;
}
default: {
const image = await getMiniCodeImage(canvas);
ctx.drawImage(image, logoX, logoY, logoWidth, logoHeight);
break;
}
}
// 绘制应用名称
ctx.font = 'bold 64px "Microsoft Yahei"';
ctx.fillStyle = '#000';
ctx.textAlign = 'left';
ctx.textBaseline = 'top';
ctx.fillText(appName, titleX, titleY);
// 绘制应用提示
ctx.font = '48px "Microsoft Yahei"';
ctx.fillStyle = '#666';
ctx.fillText(appHint, titleX, 186);
// 绘制标题
ctx.font = 'bold 64px "Microsoft Yahei"';
ctx.fillStyle = '#000';
ctx.fillText(title, 1015, titleY);
// 绘制副标题
ctx.font = '48px "Microsoft Yahei"';
ctx.fillStyle = '#666';
ctx.fillText(subTitle, 1015, 186);
// 调用回调函数，让调用者设置 currentY 并绘制分割线
if (onHeaderDrawn) {
onHeaderDrawn(304);
}
}
/**
* 绘制迷你页眉的参数接口
*/
interface DrawMiniHeaderParams {
canvas: WechatMiniprogram.Canvas;
ctx: RenderingContext;
options: {
appName: string;
title: string;
};
canvasWidth?: number; // 逻辑像素宽度（可选，如果提供则使用，否则从 canvas.width 计算）
onHeaderDrawn?: (currentY: number) => void; // 绘制完成后的回调，用于设置 currentY 和绘制分割线
}
/**
* 绘制迷你页眉（仅包含应用名称和标题，居中显示）
*/
export function drawMiniHeader({
canvas,
ctx,
options,
canvasWidth,
onHeaderDrawn,
}: DrawMiniHeaderParams): void {
const { appName, title } = options;
const titleY = 120;
// 如果提供了逻辑宽度，使用它；否则使用 canvas.width（假设 ctx 未 scale）
const centerX =
canvasWidth !== undefined ? canvasWidth / 2 : canvas.width / 2;
ctx.font = 'bold 64px "Microsoft Yahei"';
ctx.fillStyle = '#000';
ctx.textAlign = 'center';
ctx.fillText(appName + ' ' + title, centerX, titleY);
// 调用回调函数，让调用者设置 currentY 并绘制分割线
if (onHeaderDrawn) {
onHeaderDrawn(200);
}
}
miniprogram/service/shapeDrawService.ts
+14 -9
View File
@@ -1,3 +1,14 @@
/**
* 图形涂色服务
* 根据图形类型绘制到Canvas
*
* 支持的图形类型：
* - circle：圆形
* - ellipse：椭圆
* - square：正方形
* - rectangle：矩形
* - triangle：三角形
*/
import { BaseDrawService } from '../core/draw/baseDraw';
import { ShapeCard } from '../constants/shapes';
import { drawShape } from './drawShape';
@@ -25,12 +36,7 @@ class ShapeDrawService extends BaseDrawService {
this.clear();
this.setPaper();
// 绘制Header
if (this.headerType !== 'minimal') {
await this.drawHeader();
} else {
await this.drawMiniHeader();
}
this.drawDivider();
this.drawLegend();
this.drawContent();
@@ -40,12 +46,11 @@ class ShapeDrawService extends BaseDrawService {
const { ctx, shapes } = this;
if (shapes.length <= 0) return;
// 逻辑像素尺寸（原始尺寸除以3）
this.currentY = this.headerType === 'minimal' ? 75 : 110; // 200/3≈67, 304/3≈101
const legendTopY = this.currentY;
const shapeSize = 67; // 200/3≈67
const rectWidth = 60; // 180/3=60
const rectHeight = 27; // 80/3≈27
const startY = this.currentY + 42; // 125/3≈42
const startY = legendTopY + 42; // 125/3≈42
const len = shapes.length;
// 计算示例图形的间距
@@ -76,7 +81,7 @@ class ShapeDrawService extends BaseDrawService {
);
});
this.currentY = this.headerType === 'minimal' ? 180 : 220; // 532/3≈177, 622/3≈207
this.currentY = startY + shapeSize / 2 + 3 + rectHeight + 28;
this.drawDivider();
}
miniprogram/service/textDrawService.ts
+10 -11
View File
@@ -1,3 +1,8 @@
/**
* 找一找涂色，文字涂色服务
* 根据文字列表绘制到Canvas
*/
import { BaseDrawService } from '../core/draw/baseDraw';
/**
* 计算示例区域圆的中心点
@@ -70,16 +75,11 @@ class TextDrawService extends BaseDrawService {
this.clear();
this.setPaper();
// 绘制Header
if (this.headerType !== 'minimal') {
await this.drawHeader();
} else {
await this.drawMiniHeader();
}
this.drawDivider();
this.drawLegend();
this.drawContent();
await this.drawPrintFooter();
}
/** 绘制示例
@@ -94,13 +94,12 @@ class TextDrawService extends BaseDrawService {
const { ctx, colors, characters } = this;
if (characters.length <= 0) return;
// 逻辑像素尺寸（原始尺寸除以3）
this.currentY = this.headerType === 'minimal' ? 68 : 110; // 200/3≈67, 304/3≈101
const legendTopY = this.currentY;
const radius = 22; // 65/3≈22
const rectWidth = 60; // 180/3=60
const rectHeight = 27; // 80/3≈27
const startX = 87 + radius; // (260+65)/3≈108
const startY = this.currentY + 10 + radius; // (30+65)/3≈32
const startY = legendTopY + 10 + radius; // (30+65)/3≈32
const len = characters.length || 4;
const centers = calculateCircleCenters(
this.canvasWidth,
@@ -148,7 +147,7 @@ class TextDrawService extends BaseDrawService {
);
});
this.currentY = this.headerType === 'minimal' ? 178 : 230; // 522/3=174, 612/3=204
this.currentY = startY + radius + 14 + rectHeight + 24;
this.drawDivider();
}
@@ -157,7 +156,7 @@ class TextDrawService extends BaseDrawService {
if (characters.length <= 0) return;
const len = characters.length;
const rows = this.headerType === 'minimal' ? 9 : 8;
const rows = 8;
const radius = 27; // 80/3≈27
const fontSize = 24; // 72/3=24
miniprogram/service/wordDrawService.ts
+14 -8
View File
@@ -1,3 +1,13 @@
/**
* 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 { CharacterItem } from '../types/characterType';
@@ -255,32 +265,28 @@ class WordDrawService extends BaseDrawService {
this.clear();
this.setPaper();
// 绘制Header
if (this.headerType !== 'minimal') {
await this.drawHeader();
} else {
this.drawMiniHeader();
}
this.drawDivider();
this.drawContentEmpty();
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
*/
drawPracticeContent(characters: CharacterItem[]) {
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();
}
/**
miniprogram/utils/index.ts
+1 -1
View File
@@ -5,7 +5,7 @@ export * from './http';
export * from './getWordsSvgJson';
export async function getMiniCodeImage(canvas: Canvas) {
return getImage(canvas, '/assets/imgs/doodle-mini-code.jpg');
return getImage(canvas, '/assets/imgs/doodle-mini-logo.jpg');
}
export async function getImage(canvas: Canvas, path: string) {
project.private.config.json
+9 -2
View File
@@ -23,12 +23,19 @@
"condition": {
"miniprogram": {
"list": [
{
"name": "pages/index/index",
"pathName": "pages/index/index",
"query": "",
"scene": null,
"launchMode": "default"
},
{
"name": "englishPages/letterTracing/letterTracing",
"pathName": "englishPages/letterTracing/letterTracing",
"query": "id=letter-tracing-single",
"scene": null,
"launchMode": "default"
"launchMode": "default",
"scene": null
}
]
}