如何实现条码等宽；与条形码数据无关

Question

目前我正在编写一个标签写入器（如果重要的话，使用 Java，兄弟 QL-570）来打印具有不同 ID 的条形码。条形码数据的长度可以从 ~17 个字符到 ~3 个字符不等。

但是，鉴于我已经正确理解了条形码的概念，数据越多 - 条形码就会变得越宽。

我希望所有条码都具有相同且恒定的大小：无论数据长度如何。 （条码不填满标签就不好看，太大也不行）

当标签尺寸固定（即 29 毫米 x 90 毫米）时，如何处理这个问题？ 您/您的公司是如何解决这个问题的？二维条码不是一种选择。很遗憾。

Answer 1

我认为最好的办法是填充您的数据，即

123

变成

00000000000000123

想想其他地方是如何做到的，我以前在日常生活中肯定见过零填充条形码。我认为最好的办法就是选择一些您认为足够多年的数字并将您的应用程序编码为该数字。如果你最终不得不超越它，那么，这是一个很好的问题，不是吗？

Answer 2

如果您必须并排比较不同宽度的条形码，这看起来会有点有趣，但我的公司通过将每个符号定义为 1x??位图并将其缩放到应用程序所需的大小。例如，每个代码 128 符号（Stop 除外）都是 11 个像素宽。我们的“字体”定义了 107 个字符，每个字符都是 1x11 的黑白位图 (PNG)。

如果您对垂直和水平尺寸有足够的控制权，则可以更轻松地将条形码安装到提供的空间中。

这是一个类似于上图的简单示例：

    <img 
    alt="104,{Start B}" title="104,{Start B}" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAsAAAABAQMAAAAy+cYDAAAABlBMVEUAAAD///+l2Z/dAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAADklEQVQIHQEDAPz/AC3gAT0BDuLeG4IAAAAASUVORK5CYII=" width="30" height="30"><img
    alt=" 17,A:{1},B:{1}" title=" 17,A:{1},B:{1}" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAsAAAABAQMAAAAy+cYDAAAABlBMVEUAAAD///+l2Z/dAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAADklEQVQIHQEDAPz/AGMgAOkAhBjTObMAAAAASUVORK5CYII=" width="30" height="30"><img
    alt=" 18,A:{2},B:{2}" title=" 18,A:{2},B:{2}" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAsAAAABAQMAAAAy+cYDAAAABlBMVEUAAAD///+l2Z/dAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAADklEQVQIHQEDAPz/ADGgAQUA0nI/mr0AAAAASUVORK5CYII=" width="30" height="30"><img
    alt=" 19,A:{3},B:{3}" title=" 19,A:{3},B:{3}" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAsAAAABAQMAAAAy+cYDAAAABlBMVEUAAAD///+l2Z/dAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAADklEQVQIHQEDAPz/ADRgAMsAlQDS68kAAAAASUVORK5CYII=" width="30" height="30"><img
    alt=" 08,A:{(},B:{(}" title=" 08,A:{(},B:{(}" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAsAAAABAQMAAAAy+cYDAAAABlBMVEUAAAD///+l2Z/dAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAADklEQVQIHQEDAPz/AHNgAUkA1ElZCJAAAAAASUVORK5CYII=" width="30" height="30"><img
    alt="106,{Stop}"title="106,{Stop}"src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAA0AAAABAQMAAAA/57ZEAAAABlBMVEUAAAD///+l2Z/dAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAADklEQVQIHQEDAPz/ADigARMA2dpJzT8AAAAASUVORK5CYII=" width="30" height="30">
    <p/>
    123
    <br>
    <p>&nbsp;</p>
    <img 
    alt="104,{Start B}" title="104,{Start B}" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAsAAAABAQMAAAAy+cYDAAAABlBMVEUAAAD///+l2Z/dAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAADklEQVQIHQEDAPz/AC3gAT0BDuLeG4IAAAAASUVORK5CYII=" width="9" height="30"><img
    alt=" 17,A:{1},B:{1}" title=" 17,A:{1},B:{1}" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAsAAAABAQMAAAAy+cYDAAAABlBMVEUAAAD///+l2Z/dAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAADklEQVQIHQEDAPz/AGMgAOkAhBjTObMAAAAASUVORK5CYII=" width="9" height="30"><img
    alt=" 18,A:{2},B:{2}" title=" 18,A:{2},B:{2}" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAsAAAABAQMAAAAy+cYDAAAABlBMVEUAAAD///+l2Z/dAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAADklEQVQIHQEDAPz/ADGgAQUA0nI/mr0AAAAASUVORK5CYII=" width="9" height="30"><img
    alt=" 19,A:{3},B:{3}" title=" 19,A:{3},B:{3}" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAsAAAABAQMAAAAy+cYDAAAABlBMVEUAAAD///+l2Z/dAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAADklEQVQIHQEDAPz/ADRgAMsAlQDS68kAAAAASUVORK5CYII=" width="9" height="30"><img
    alt=" 20,A:{4},B:{4}" title=" 20,A:{4},B:{4}" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAsAAAABAQMAAAAy+cYDAAAABlBMVEUAAAD///+l2Z/dAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAADklEQVQIHQEDAPz/ADYgAI8AVxcQlAsAAAAASUVORK5CYII=" width="9" height="30"><img
    alt=" 21,A:{5},B:{5}" title=" 21,A:{5},B:{5}" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAsAAAABAQMAAAAy+cYDAAAABlBMVEUAAAD///+l2Z/dAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAADklEQVQIHQEDAPz/ACNgAKkAhD/i5lYAAAAASUVORK5CYII=" width="9" height="30"><img
    alt=" 22,A:{6},B:{6}" title=" 22,A:{6},B:{6}" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAsAAAABAQMAAAAy+cYDAAAABlBMVEUAAAD///+l2Z/dAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAADklEQVQIHQEDAPz/ADFgAMUAksTlwtMAAAAASUVORK5CYII=" width="9" height="30"><img
    alt=" 23,A:{7},B:{7}" title=" 23,A:{7},B:{7}" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAsAAAABAQMAAAAy+cYDAAAABlBMVEUAAAD///+l2Z/dAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAADklEQVQIHQEDAPz/ABIgAEcAM15OsZIAAAAASUVORK5CYII=" width="9" height="30"><img
    alt=" 24,A:{8},B:{8}" title=" 24,A:{8},B:{8}" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAsAAAABAQMAAAAy+cYDAAAABlBMVEUAAAD///+l2Z/dAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAADklEQVQIHQEDAPz/ABZgAI8Ad3Mh6bwAAAAASUVORK5CYII=" width="9" height="30"><img
    alt=" 25,A:{9},B:{9}" title=" 25,A:{9},B:{9}" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAsAAAABAQMAAAAy+cYDAAAABlBMVEUAAAD///+l2Z/dAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAADklEQVQIHQEDAPz/ABpgAJcAex9glyQAAAAASUVORK5CYII=" width="9" height="30"><img
    alt=" 16,A:{0},B:{0}" title=" 16,A:{0},B:{0}" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAsAAAABAQMAAAAy+cYDAAAABlBMVEUAAAD///+l2Z/dAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAADklEQVQIHQEDAPz/AGJgAScAw0BJukMAAAAASUVORK5CYII=" width="9" height="30"><img
    alt=" 17,A:{1},B:{1}" title=" 17,A:{1},B:{1}" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAsAAAABAQMAAAAy+cYDAAAABlBMVEUAAAD///+l2Z/dAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAADklEQVQIHQEDAPz/AGMgAOkAhBjTObMAAAAASUVORK5CYII=" width="9" height="30"><img
    alt=" 18,A:{2},B:{2}" title=" 18,A:{2},B:{2}" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAsAAAABAQMAAAAy+cYDAAAABlBMVEUAAAD///+l2Z/dAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAADklEQVQIHQEDAPz/ADGgAQUA0nI/mr0AAAAASUVORK5CYII=" width="9" height="30"><img
    alt=" 19,A:{3},B:{3}" title=" 19,A:{3},B:{3}" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAsAAAABAQMAAAAy+cYDAAAABlBMVEUAAAD///+l2Z/dAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAADklEQVQIHQEDAPz/ADRgAMsAlQDS68kAAAAASUVORK5CYII=" width="9" height="30"><img
    alt=" 20,A:{4},B:{4}" title=" 20,A:{4},B:{4}" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAsAAAABAQMAAAAy+cYDAAAABlBMVEUAAAD///+l2Z/dAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAADklEQVQIHQEDAPz/ADYgAI8AVxcQlAsAAAAASUVORK5CYII=" width="9" height="30"><img
    alt=" 21,A:{5},B:{5}" title=" 21,A:{5},B:{5}" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAsAAAABAQMAAAAy+cYDAAAABlBMVEUAAAD///+l2Z/dAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAADklEQVQIHQEDAPz/ACNgAKkAhD/i5lYAAAAASUVORK5CYII=" width="9" height="30"><img
    alt=" 22,A:{6},B:{6}" title=" 22,A:{6},B:{6}" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAsAAAABAQMAAAAy+cYDAAAABlBMVEUAAAD///+l2Z/dAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAADklEQVQIHQEDAPz/ADFgAMUAksTlwtMAAAAASUVORK5CYII=" width="9" height="30"><img
    alt=" 23,A:{7},B:{7}" title=" 23,A:{7},B:{7}" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAsAAAABAQMAAAAy+cYDAAAABlBMVEUAAAD///+l2Z/dAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAADklEQVQIHQEDAPz/ABIgAEcAM15OsZIAAAAASUVORK5CYII=" width="9" height="30"><img
    alt=" 64,A:{NUL},B:{`}" title=" 64,A:{NUL},B:{`}" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAsAAAABAQMAAAAy+cYDAAAABlBMVEUAAAD///+l2Z/dAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAADklEQVQIHQEDAPz/AF5gAR8Av0A69KoAAAAASUVORK5CYII=" width="9" height="30"><img
    alt="106,{Stop}"title="106,{Stop}"src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAA0AAAABAQMAAAA/57ZEAAAABlBMVEUAAAD///+l2Z/dAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAADklEQVQIHQEDAPz/ADigARMA2dpJzT8AAAAASUVORK5CYII=" width="9" height="30">
    <p/>
    12345678901234567

请注意，每个字符都指定了尺寸，并且条形码通常会以 8 或更高的宽度进行扫描（取决于打印质量）。条形码中的所有字符都需要相同的宽度。请记住，您的水平静区是条形宽度的函数，因此请尽量在标签的每一侧保持至少两个字符宽度。