Description:

yjy tsc utils

tsc_utils #
标签打印机 TSC 数据转换工具，主要用于将 image 图像转换成标签打印机可识别的字节数组。
内部图像处理使用 image: ^3.0.2 。
使用示例 #
tsc_utils: ^0.0.1
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1. 获取图片数据转 Uint8List
// 通过文件路径获取图片
static Future<Uint8List> getImage(String imgPath) async {
final imgFile = File(imgPath);
final exist = await imgFile.exists();
if(exist) {
return imgFile.readAsBytes();
} else {
throw Exception('print imgFile is not exist');
}
}
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2. Unit8List 转 tsc 字节数组
import 'package:image/image.dart' as img;

// unit8List 转 esc 字节数组
static Future<List<int>> decodeBytes(Uint8List imgData) async {
final img.Image image = await cropImage(
imgData,
);
final origin = image;
final width = origin.width;
final height = origin.height;
img.Image targetImg = origin;
// 对图像进行缩放处理，保证标签图像的宽能被8整除
if (width % 8 != 0) {
targetImg = await ImageDecodeTool.resizeImage(
origin,
targetWidth: width ~/ 8 * 8,
targetHeight: height,
);
}
final targetWidth = targetImg.width;
final targetHeight = targetImg.height;
Generator generator = Generator();
// 设置标签宽高
generator.addSize(width: targetWidth ~/ 8, height: targetHeight ~/ 8);
generator.addGap(1);
// 设置标签浓度
generator.addDensity(Density.density15);
// 设置标签方向（正向或倒向）
generator.addDirection(Direction.backWord);
generator.addReference(2, 2);
// 清空图像缓存
generator.addCls();
// 加入打印图像
generator.addImage(targetImg);
// 设置打印张数
generator.addPrint(1);
return generator.byte;
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注意事项 #
通常 1mm 对应 8个像素，例如打印标签尺寸为 45mm * 70mm，对应的标签图像尺寸应为 360px * 560px 。

License

For personal and professional use. You cannot resell or redistribute these repositories in their original state.

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