R524809
130 lines
3.3 KiB
TypeScript
130 lines
3.3 KiB
TypeScript
import { getMiniCodeImage, getImage } from '../../utils/index';
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/**
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* 绘制数学模块页眉的参数接口（尺寸除以3）
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*/
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interface DrawMathHeaderParams {
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canvas: WechatMiniprogram.Canvas;
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ctx: RenderingContext;
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headerType: PrintHeader;
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options: {
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appName: string;
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appHint: string;
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title: string;
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subTitle: string;
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};
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onHeaderDrawn?: (currentY: number) => void;
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}
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/**
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* 绘制数学模块完整页眉（尺寸除以3）
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*/
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export async function drawMathHeader({
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canvas,
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ctx,
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headerType,
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options,
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onHeaderDrawn,
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}: DrawMathHeaderParams): Promise<void> {
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const { appName, appHint, title, subTitle } = options;
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let titleX = 108; // 约109.33
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const titleY = 26; // 约26.67
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const logoX = 24; // 约26.67
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const logoY = 20; // 20
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const logoWidth = 65; // 约66.67
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const logoHeight = 65; // 约66.67
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// 根据 headerType 绘制 Logo 或调整标题位置
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switch (headerType) {
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case 'LogoImage': {
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const image = await getImage(
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canvas,
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'/assets/imgs/doodle-logo.png',
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);
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ctx.drawImage(image, logoX, logoY, logoWidth, logoHeight);
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break;
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}
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case 'noLogoImage': {
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titleX = 40;
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break;
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}
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case 'minimal': {
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titleX = 40;
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break;
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}
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default: {
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const image = await getMiniCodeImage(canvas);
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ctx.drawImage(image, logoX, logoY, logoWidth, logoHeight);
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break;
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}
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}
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// 绘制应用名称（字体大小除以3）
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ctx.font = 'bold 22px "Microsoft Yahei"';
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ctx.fillStyle = '#000';
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ctx.textAlign = 'left';
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ctx.textBaseline = 'top';
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ctx.fillText(appName, titleX, titleY);
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// 绘制应用提示（字体大小除以3）
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ctx.font = '16px "Microsoft Yahei"';
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ctx.fillStyle = '#666';
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ctx.fillText(appHint, titleX, 66);
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// 绘制标题（字体大小除以3）
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ctx.font = 'bold 22px "Microsoft Yahei"';
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ctx.fillStyle = '#000';
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ctx.fillText(title, 280, titleY);
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// 绘制副标题（字体大小除以3）
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ctx.font = '16px "Microsoft Yahei"';
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ctx.fillStyle = '#666';
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ctx.fillText(subTitle, 280, 66);
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// 调用回调函数
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if (onHeaderDrawn) {
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onHeaderDrawn(100);
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}
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}
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/**
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* 绘制数学模块迷你页眉的参数接口（尺寸除以3）
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*/
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interface DrawMathMiniHeaderParams {
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// canvas: WechatMiniprogram.Canvas;
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ctx: RenderingContext;
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options: {
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appName: string;
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title: string;
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};
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canvasWidth: number; // 逻辑像素宽度（已除以3）
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onHeaderDrawn?: (currentY: number) => void;
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}
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/**
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* 绘制数学模块迷你页眉（尺寸除以3）
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*/
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export function drawMathMiniHeader({
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ctx,
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options,
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canvasWidth,
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onHeaderDrawn,
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}: DrawMathMiniHeaderParams): void {
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const { appName, title } = options;
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const titleY = 46;
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const centerX = canvasWidth / 2;
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// 字体大小除以3
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ctx.font = 'bold 24px "Microsoft Yahei"'; // 64/3
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ctx.fillStyle = '#000';
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ctx.textAlign = 'center';
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ctx.fillText(appName + ' ' + title, centerX, titleY);
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// 调用回调函数，传递除以3后的currentY
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if (onHeaderDrawn) {
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onHeaderDrawn(64); // 约66.67
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}
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}
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