移植6155、650、670

components/TextToHex/TextToHex.vue

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+<template>
+	<view>
+		<canvas type="2d" canvas-id="reusableCanvas" :width="currentCanvasWidth" :height="currentCanvasHeight"
+			class="offscreen-canvas"></canvas>
+	</view>
+</template>
+
+<script>
+	export default {
+		name: "TextToHexV1",
+		props: {
+			txts: {
+				type: Array,
+				default: () => [],
+				validator: (value) => value.every(item => typeof item === 'string')
+			},
+			fontSize: {
+				type: Number,
+				default: 16,
+				validator: (value) => value > 0 && value <= 100
+			},
+			bgColor: {
+				type: String,
+				default: "#ffffff"
+			},
+			color: {
+				type: String,
+				default: "#000000"
+			}
+		},
+		data() {
+			return {
+				// 当前Canvas的宽高（动态调整）
+				currentCanvasWidth: 0,
+				currentCanvasHeight: 0,
+				// Canvas上下文（复用）
+				ctx: null
+			};
+		},
+		computed: {
+			validTxts() {
+				return this.txts.filter(line => line.trim() !== '');
+			}
+		},
+		mounted() {
+			// 初始化Canvas上下文（只创建一次）
+			this.ctx = uni.createCanvasContext('reusableCanvas', this);
+		},
+		methods: {
+			/**
+			 * 估算单行文本所需的Canvas宽度
+			 */
+			calcLineWidth(textLine) {
+				return textLine.length * this.fontSize;
+			},
+
+			/**
+			 * 清除Canvas内容
+			 */
+			clearCanvas() {
+				this.ctx.setFillStyle(this.bgColor);
+				this.ctx.fillRect(0, 0, this.currentCanvasWidth, this.currentCanvasHeight);
+			},
+
+			/**
+			 * 复用单个Canvas处理所有文本行
+			 */
+			async drawAndGetPixels() {
+				
+				let convertCharToMatrix=function(imageData) {
+					// console.log("imgData=",imageData)
+					let matrix = [];
+
+					// 逐行处理
+					for (let y = 0; y < 16; y++) {
+						let byte1 = 0,
+							byte2 = 0;
+
+						// 每行16个像素，分为两个字节
+						for (let x = 0; x < 16; x++) {
+							// 计算像素在imageData中的索引 (RGBA格式)
+							let index = (y * 16 + x) * 4;
+							let red = imageData[index];
+
+							// 黑色像素（R值较低）视为1，白色视为0
+							let isBlack = red < 128;
+
+							if (x < 8) {
+								// 第一个字节（左8位）
+								if (isBlack) {
+									byte1 |= 0x80 >> x; // 从左到右设置位
+								}
+							} else {
+								// 第二个字节（右8位）
+								if (isBlack) {
+									byte2 |= 0x80 >> (x - 8);
+								}
+							}
+						}
+
+						// 将字节转换为两位十六进制字符串
+						matrix.push('0x' + byte1.toString(16).padStart(2, '0').toUpperCase());
+						matrix.push('0x' + byte2.toString(16).padStart(2, '0').toUpperCase());
+					}
+
+					return matrix;
+				}
+
+				let  drawTxt=async (textLine)=> {
+					let result = {};
+					let ctx = this.ctx;
+
+					// 1. 动态调整Canvas尺寸
+					this.currentCanvasWidth = this.calcLineWidth(textLine);
+					this.currentCanvasHeight = this.fontSize;
+
+					// 2. 清空Canvas（绘制背景）
+					this.clearCanvas();
+
+					// 3. 设置文字样式
+					ctx.setFillStyle(this.color);
+					ctx.setTextBaseline('middle');
+					ctx.setFontSize(this.fontSize);
+					ctx.font = `${this.fontSize}px "PingFang SC", PingFang SC, Arial, sans-serif`;
+
+					// 4. 绘制当前行文本
+					let currentX = 0;
+					let currentY = this.fontSize / 2;
+					for (let j = 0; j < textLine.length; j++) {
+						let char = textLine[j];
+						ctx.fillText(char, currentX, currentY);
+						// 按实际字符宽度计算间距
+						let charWidth = ctx.measureText(char).width;
+						currentX += charWidth;
+					}
+
+					// 5. 异步绘制并获取像素数据（串行处理避免冲突）
+					await new Promise((resolve, reject) => {
+						ctx.draw(false, () => {
+							uni.canvasGetImageData({
+								canvasId: 'reusableCanvas',
+								x: 0,
+								y: 0,
+								width: this.currentCanvasWidth,
+								height: this.currentCanvasHeight,
+								success: res => {
+									
+									result={
+										line: textLine,
+										pixelData: res.data,
+										width: this.currentCanvasWidth,
+										height: this.currentCanvasHeight
+									};
+									resolve();
+								},
+								fail: err => {
+									// console.error(`处理第${i+1}行失败:`, err);
+									reject(err)
+								}
+							});
+						});
+					});
+
+					return result;
+				}
+				let arr = [];
+				// 循环处理每行文本
+				for (let i = 0; i < this.validTxts.length; i++) {
+
+					let linePixls = [];
+					let item = this.validTxts[i];
+					console.log("item=",item);
+					for (var j = 0; j < item.length; j++) {
+						let result = await drawTxt(item[j]);
+						linePixls.push(convertCharToMatrix(result.pixelData));
+					}
+					console.log("hexs=",linePixls.join(","));
+					arr.push(linePixls);
+				}
+				
+				return arr;
+			}
+		}
+	};
+</script>
+
+<style>
+	.offscreen-canvas {
+		position: fixed;
+		left: -9999px;
+		top: -9999px;
+		visibility: hidden;
+	}
+</style>