将字符映射到国际键集的键码

java raspberry-pi scancodes

2022-09-04 20:48:28

所以我构建了一个pi零键盘模拟器，如下所述：

https://www.rmedgar.com/blog/using-rpi-zero-as-keyboard-setup-and-device-definition

我让它键入从本地文本文件中读取的文本（所有在java中开发的内容 - 原因:)）。
我现在的问题是，我的pi零附加到的各种计算机上配置的密钥集差异很大（德语，英语，法语，...）。根据计算机的不同，这会导致几个打字错误（例如，z而不是y）。

因此，我现在构建了一些“转换表”，将字符映射到适合计算机的键码。这样的表看起来像这样：

public scancodes_en_us() {
    //We have (Character, (scancode, modifier))
    table.put("a",Pair.create("4","0"));
    table.put("b",Pair.create("5","0"));
    table.put("c",Pair.create("6","0"));
    table.put("d",Pair.create("7","0"));
    table.put("e",Pair.create("8","0"));
    table.put("f",Pair.create("9","0"));
    table.put("g",Pair.create("10","0"));
    table.put("h",Pair.create("11","0"));
    table.put("i",Pair.create("12","0"));
    table.put("j",Pair.create("13","0"));
    table.put("k",Pair.create("14","0"));
    table.put("l",Pair.create("15","0"));
    table.put("m",Pair.create("16","0"));
    table.put("n",Pair.create("17","0"));
    table.put("o",Pair.create("18","0"));
    table.put("p",Pair.create("19","0"));
    table.put("q",Pair.create("20","0"));
    table.put("r",Pair.create("21","0"));
    table.put("s",Pair.create("22","0"));
    table.put("t",Pair.create("23","0"));
    table.put("u",Pair.create("24","0"));
    table.put("v",Pair.create("25","0"));
    table.put("w",Pair.create("26","0"));
    table.put("x",Pair.create("27","0"));
    table.put("y",Pair.create("28","0"));
    table.put("z",Pair.create("29","0"));
    table.put("A",Pair.create("4","2"));
    table.put("B",Pair.create("5","2"));
    table.put("C",Pair.create("6","2"));
    table.put("D",Pair.create("7","2"));
    table.put("E",Pair.create("8","2"));
    table.put("F",Pair.create("9","2"));
    table.put("G",Pair.create("10","2"));
    table.put("H",Pair.create("11","2"));
    table.put("I",Pair.create("12","2"));
    table.put("J",Pair.create("13","2"));
    table.put("K",Pair.create("14","2"));
    table.put("L",Pair.create("15","2"));
    table.put("M",Pair.create("16","2"));
    table.put("N",Pair.create("17","2"));
    table.put("O",Pair.create("18","2"));
    table.put("P",Pair.create("19","2"));
    table.put("Q",Pair.create("20","2"));
    table.put("R",Pair.create("21","2"));
    table.put("S",Pair.create("22","2"));
    table.put("V",Pair.create("25","2"));
    table.put("W",Pair.create("26","2"));
    table.put("X",Pair.create("27","2"));
    table.put("Y",Pair.create("28","2"));
    table.put("Z",Pair.create("29","2"));
    table.put("1",Pair.create("30","0"));
    table.put("2",Pair.create("31","0"));
    table.put("5",Pair.create("34","0"));
    table.put("6",Pair.create("35","0"));
    table.put("7",Pair.create("36","0"));
    table.put("8",Pair.create("37","0"));
    table.put("9",Pair.create("38","0"));
    table.put("0",Pair.create("39","0"));
    table.put("!",Pair.create("30","2"));
    table.put("@",Pair.create("31","2"));
    table.put("#",Pair.create("32","2"));
    table.put("$",Pair.create("33","2"));
    table.put("%",Pair.create("34","2"));
    table.put("^",Pair.create("35","2"));
    table.put("&",Pair.create("36","2"));
    table.put("*",Pair.create("37","2"));
    table.put("(",Pair.create("38","2"));
    table.put(")",Pair.create("39","2"));
    table.put(" ",Pair.create("44","0"));
    table.put("-",Pair.create("45","0"));
    table.put("=",Pair.create("46","0"));
    table.put("[",Pair.create("47","0"));
    table.put("]",Pair.create("48","0"));
    table.put("\\",Pair.create("49","0"));
    table.put(";",Pair.create("51","0"));
    table.put("'",Pair.create("52","0"));
    table.put("`",Pair.create("53","0"));
    table.put(",",Pair.create("54","0"));
    table.put(".",Pair.create("55","0"));
    table.put("/",Pair.create("56","0"));
    table.put("_",Pair.create("45","2"));
    table.put("+",Pair.create("46","2"));
    table.put("{",Pair.create("47","2"));
    table.put("}",Pair.create("48","2"));
    table.put("|",Pair.create("49","2"));
    table.put(":",Pair.create("51","2"));
    table.put("\"",Pair.create("52","2"));
    table.put("~",Pair.create("53","2"));
    table.put("<",Pair.create("54","2"));
    table.put(">",Pair.create("55","2"));
    table.put("?",Pair.create("56","2"));

为许多不同的键盘布局设置这样的表格是一种痛苦。有没有更聪明的版本可以将字符映射到特定键盘布局的扫描码？

如果没有 - 是否有某种存档，我可以在其中找到这样一个字符来扫描许多不同键盘布局的代码映射？

谢谢

答案 1

看看本地化是如何工作的，它们都共享相同的方法：为每个本地化创建一个特殊版本作为属性文件，然后有一个抽象类来基于区域设置加载属性。

您将开发一个类似如下的装入器类：

public scancodes(Locale locale) {
    // load locale property file or download if missing
    // read the property and store to the table
    ResourceBundle scanCodes = ResourceBundle.getBundle("codes",locale);
}

你看起来像：codes_locale

codes_de.properties

a=4,0
b=5,0

通过执行此操作，可以将特定于区域设置的字符与逻辑代码分开，并且无需将所有键盘捆绑在应用侧面。您可以根据需要下载它们。

您可以在此处访问教程

答案 2

如果我正确地理解了你试图做的事情，那么你根本不需要映射任何东西，只需使用一个预先制作的格式（就像unicode一样，它适用于我所知道的所有语言），只需发送一个字符代码并将其翻译成匹配的char。

示例文件读取器 - 字符解释器：

JFileChooser fc = new JFileChooser();
fc.setFileSelectionMode(JFileChooser.FILES_ONLY);
fc.showOpenDialog(null);

File textFile = fc.getSelectedFile();

if(textFile.getName().endsWith(".txt")) {
    System.out.println(textFile.getAbsolutePath());
    FileInputStream input = new FileInputStream(textFile);
    BufferedReader reader = new BufferedReader(new InputStreamReader(input, "UNICODE"));
    char[] buffer = new char[input.available() / 2 - 1];
    System.out.println("Bytes left: " + input.available());
    int read = reader.read(buffer);
    System.out.println("Read " + read + " characters");
    for(int i = 0; i < read; i++) {
        System.out.print("The letter is: " + buffer[i]);
        System.out.println(", The key code is: " + (int) buffer[i]);
    }
}

您以后可以使用按键代码来模拟计算机上的按键