From a30a631ea647b0a0615e0c78d06de90f872d4990 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=BE=AE=E5=BE=AE=E4=B8=80=E7=AC=91?= <709648985@qq.com>
Date: Wed, 5 Nov 2025 11:17:08 +0800
Subject: [PATCH] =?UTF-8?q?=E6=94=B9=E6=88=9013*13=E7=AC=A6=E5=90=88?=
=?UTF-8?q?=E8=AE=BE=E5=A4=87=E7=AB=AF?=
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---
.../TextToHex/textToDotMatrixFor7305.vue | 38 +++++++++++++------
pages/7305/BJQ7305.vue | 2 +-
2 files changed, 27 insertions(+), 13 deletions(-)
diff --git a/components/TextToHex/textToDotMatrixFor7305.vue b/components/TextToHex/textToDotMatrixFor7305.vue
index 86e2e95..37f98a3 100644
--- a/components/TextToHex/textToDotMatrixFor7305.vue
+++ b/components/TextToHex/textToDotMatrixFor7305.vue
@@ -96,14 +96,19 @@
}
let convertCharToMatrix = (drawResult, item) => {
+ // 设备端使用13x13点阵渲染
const charWidth = 13;
- const charHeight = 12;
+ const charHeight = 13;
const { pixelData, width, height } = drawResult;
- // 将高分辨率像素降采样为13x12的布尔矩阵
+ // 将高分辨率像素降采样为13x13的布尔矩阵
const target = new Array(charWidth * charHeight).fill(0);
- const threshold = 0.5; // 每个小块中超过50%深色判为1
+ const threshold = 0.5; // 每个小块中超过50%亮色(文字)判为1
+
+ // 确保采样区域严格对齐,从PADDING_X开始,只采样13列
+ // 字符实际绘制区域:从PADDING_X开始,宽度为13*SCALE
+ const charStartX = PADDING_X;
+ const charEndX = PADDING_X + charWidth * SCALE;
- // 确保采样区域严格对齐,从PADDING_X开始,但只采样13列
for (let y = 0; y < charHeight; y++) {
for (let x = 0; x < charWidth; x++) {
let onCount = 0;
@@ -116,31 +121,39 @@
for (let sx = 0; sx < SCALE; sx++) {
const px = startX + sx;
const py = startY + sy;
+
+ // 边界检查:确保不超出Canvas边界,且不超出字符实际绘制区域
if (px < 0 || py < 0 || px >= width || py >= height) {
- // 边界外视为背景(白色)
+ // 边界外视为背景(黑色)
continue;
}
+ // 额外检查:确保不采样到字符右侧的残留区域
+ if (px >= charEndX) {
+ // 超出字符区域,视为背景
+ continue;
+ }
+
const idx = (py * width + px) * 4;
const R = pixelData[idx];
const G = pixelData[idx + 1];
const B = pixelData[idx + 2];
const A = pixelData[idx + 3] || 255;
- // 使用更严格的阈值,考虑alpha通道
+ // 计算亮度
const luminance = 0.299 * R + 0.587 * G + 0.114 * B;
const alpha = A / 255;
- // 只有深色且不透明才计入
- if (luminance < 128 && alpha > 0.5) onCount++;
+ // 背景是黑色,文字是白色,所以判断亮色(>=128)为文字点
+ if (luminance >= 128 && alpha > 0.5) onCount++;
total++;
}
}
- // 当深色占比超过阈值时判为1(至少需要采样到一些像素)
+ // 当亮色占比超过阈值时判为1(至少需要采样到一些像素)
target[y * charWidth + x] = (total > 0 && onCount / total >= threshold) ? 1 : 0;
}
}
const lowBytes = new Array(charWidth).fill(0);
const highBytes = new Array(charWidth).fill(0);
- // 按列打包,每列12行分成上下两字节
+ // 按列打包,每列13行分成上下两字节:低字节0-7行(8行),高字节8-12行(5行)
for (let col = 0; col < charWidth; col++) {
for (let row = 0; row < charHeight; row++) {
const pixel = target[row * charWidth + col];
@@ -149,7 +162,7 @@
// 低字节:0-7行,从低位到高位
lowBytes[col] |= (1 << row);
} else {
- // 高字节:8-11行,从低位到高位
+ // 高字节:8-12行,从低位到高位(使用5位,剩余3位未使用)
highBytes[col] |= (1 << (row - 8));
}
}
@@ -163,8 +176,9 @@
let ctx = this.ctx;
// 1. 动态调整Canvas尺寸(高分辨率)
+ // 设备端使用13x13点阵渲染
this.currentCanvasWidth = 13 * SCALE + PADDING_X;
- this.currentCanvasHeight = 12 * SCALE;
+ this.currentCanvasHeight = 13 * SCALE;
// 2. 清空Canvas(绘制背景)
this.clearCanvas();
diff --git a/pages/7305/BJQ7305.vue b/pages/7305/BJQ7305.vue
index ed98b1f..d8a3883 100644
--- a/pages/7305/BJQ7305.vue
+++ b/pages/7305/BJQ7305.vue
@@ -88,7 +88,7 @@
发送
+ :bgColor="'#000000'" :color="'#FFFFFF'" :fontSize="11" >