189 lines
6.0 KiB
TypeScript
189 lines
6.0 KiB
TypeScript
/**
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* 数字排序绘制服务
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*/
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import { BaseDrawService } from '../../../service/baseDraw';
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/**
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* 数字排序数据
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*/
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export interface NumberSortData {
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/** 6组题目数据 */
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groups: Array<{
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/** 4个乱序的数字及其颜色 */
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numbers: Array<{
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number: number;
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color: string;
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angle?: number; // 倾斜角度(弧度),-30度到+30度
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}>;
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}>;
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}
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/**
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* 数字排序绘制服务
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*/
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class NumberSortDraw extends BaseDrawService {
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sortData: NumberSortData | null = null;
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constructor(
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canvas: Canvas,
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ctx: RenderingContext,
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options?: Record<string, any>,
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) {
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super(canvas, ctx, options);
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}
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/**
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* 绘制数字排序内容
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*/
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async draw(sortData: NumberSortData) {
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if (!sortData || !sortData.groups) {
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return;
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}
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this.setPrintConfig();
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this.sortData = sortData;
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this.clear();
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this.setPaper();
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// 绘制Header
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if (this.headerType !== 'minimal') {
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await this.drawHeader();
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} else {
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this.drawMiniHeader();
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}
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// 绘制内容区域
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this.drawDivider();
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this.drawContent({
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ctx: this.ctx,
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sortData: this.sortData,
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canvasWidth: this.canvasWidth,
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startY: this.currentY,
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});
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}
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/**
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* 绘制内容区域
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*/
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private drawContent(params: {
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ctx: RenderingContext;
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sortData: NumberSortData;
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canvasWidth: number;
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startY: number;
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}): void {
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const { ctx, sortData, canvasWidth } = params;
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let { startY } = params;
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startY = startY + 25;
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const margin = 40; // 左右边距
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const rowSpacing = 60; // 行间距
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const colSpacing = 40; // 列间距
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const boxSpacing = 10; // 格子之间的间距
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// 数字区域参数
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const numberSize = 120; // 数字大小(字体大小)
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const numberAreaHeight = 120; // 数字区域高度(增大以容纳更大的数字)
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const numberOverlapSpacing = 35; // 数字之间的间距(用于重叠效果)
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// 格子参数
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const boxWidth = 40; // 格子宽度
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const boxHeight = 50; // 格子高度(高比宽长)
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const boxBorderWidth = 1; // 边框宽度
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const boxBorderColor = '#999'; // 边框颜色
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// 4个格子的总宽度
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const boxesTotalWidth = 4 * boxWidth + 3 * boxSpacing;
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// 每组的总宽度(以格子的总宽度为准)
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const groupWidth = boxesTotalWidth;
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// 计算总宽度(两列 + 一列间距)
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const totalWidth = 2 * groupWidth + colSpacing;
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const groupsStartX =
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margin + (canvasWidth - margin * 2 - totalWidth) / 2;
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// 每组的总高度(数字区域 + 格子区域)
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const groupHeight = numberAreaHeight + boxHeight;
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// 绘制6个组(三行两列)
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for (let row = 0; row < 3; row++) {
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for (let col = 0; col < 2; col++) {
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const groupIndex = row * 2 + col;
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const group = sortData.groups[groupIndex];
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if (!group) continue;
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const groupX = groupsStartX + col * (groupWidth + colSpacing);
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const groupY = startY + row * (groupHeight + rowSpacing);
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// 格子的起始X坐标(居中)
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const boxesStartX = groupX;
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const boxesY = groupY + numberAreaHeight;
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// 计算数字组的中心位置(与格子中心对齐)
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const boxesCenterX = boxesStartX + boxesTotalWidth / 2;
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// 计算数字组的总宽度(从第一个数字中心到最后一个数字中心的距离)
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const numbersGroupWidth = 3 * numberOverlapSpacing;
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// 第一个数字的中心位置(数字组居中对齐)
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const firstNumberCenterX = boxesCenterX - numbersGroupWidth / 2;
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// 绘制4个数字(上边),有重叠效果
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for (let i = 0; i < group.numbers.length; i++) {
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const numberItem = group.numbers[i];
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// 数字中心位置(有重叠)
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const numberX =
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firstNumberCenterX + i * numberOverlapSpacing;
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const numberY = groupY + numberAreaHeight / 2;
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// 获取倾斜角度(如果存在,否则使用0)
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const angle = numberItem.angle || 0;
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// 保存上下文状态
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ctx.save();
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// 移动到数字位置
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ctx.translate(numberX, numberY);
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// 旋转(角度转换为弧度)
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ctx.rotate(angle);
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// 绘制数字(带边线)
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const text = numberItem.number.toString();
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ctx.font = `bold ${numberSize}px Arial`;
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ctx.textAlign = 'center';
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ctx.textBaseline = 'middle';
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// 先绘制边线
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ctx.strokeStyle = '#141414';
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ctx.lineWidth = 3;
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ctx.strokeText(text, 0, 0);
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// 再绘制填充
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ctx.fillStyle = numberItem.color;
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ctx.fillText(text, 0, 0);
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// 恢复上下文状态
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ctx.restore();
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}
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// 绘制4个长方形格子(下边)
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for (let i = 0; i < 4; i++) {
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const boxX = boxesStartX + i * (boxWidth + boxSpacing);
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// 绘制格子边框
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ctx.strokeStyle = boxBorderColor;
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ctx.lineWidth = boxBorderWidth;
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ctx.beginPath();
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ctx.rect(boxX, boxesY, boxWidth, boxHeight);
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ctx.stroke();
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}
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}
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}
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}
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}
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export default NumberSortDraw;
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