• 使用html画一个键盘

    在这里插入图片描述

    DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <link rel="stylesheet" href="https://vectorjs.org/library.css">
  <title>vector examples Keyboardtitle>
head>
<body>
  <div id="keyboard">div>
  
  <script type="module" src="./temp.js">script>
body>
html>

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    import Interactive from "https://vectorjs.org/interactive.js";
console.log("Interactive", Interactive);

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    /**
 * @title Keyboard
 * @description This interactive demonstrates how key board input can be used to add interactivity.
 * @tags [input]
 */
// import { Interactive, getScriptName } from "../../index.js";
// let interactive = new Interactive(getScriptName());
import Interactive from "https://vectorjs.org/interactive.js";
let interactive = new Interactive("keyboard");
interactive.width = 768;
interactive.height = 300;
interactive.border = true;
let buffer = "";
let keys = [
  [
    "`",
    "1",
    "2",
    "3",
    "4",
    "5",
    "6",
    "7",
    "8",
    "9",
    "0",
    "-",
    "=",
    "Backspace",
  ],
  ["tab", "q", "w", "e", "r", "t", "y", "u", "i", "o", "p", "[", "]", "\\"],
  ["CapsLock", "a", "s", "d", "f", "g", "h", "j", "k", "l", ";", "'", "Enter"],
  ["Shift", "z", "x", "c", "v", "b", "n", "m", ",", ".", "/", "Shift"],
  [
    "fn",
    "Control",
    "Alt",
    "Meta",
    " ",
    "Meta",
    "Alt",
    "ArrowLeft",
    "ArrowUp",
    "ArrowDown",
    "ArrowRight",
  ],
];
let buttons = [];
let keycodes = {
  0: { Symbol: 0, Shift: ")" },
  1: { Symbol: 1, Shift: "!" },
  2: { Symbol: 2, Shift: "@" },
  3: { Symbol: 3, Shift: "#" },
  4: { Symbol: 4, Shift: "$" },
  5: { Symbol: 5, Shift: "%" },
  6: { Symbol: 6, Shift: "^" },
  7: { Symbol: 7, Shift: "&" },
  8: { Symbol: 8, Shift: "*" },
  9: { Symbol: 9, Shift: "(" },
  a: { Symbol: "a", Shift: "A" },
  b: { Symbol: "b", Shift: "B" },
  c: { Symbol: "c", Shift: "C" },
  d: { Symbol: "d", Shift: "D" },
  e: { Symbol: "e", Shift: "E" },
  f: { Symbol: "f", Shift: "F" },
  g: { Symbol: "g", Shift: "G" },
  h: { Symbol: "h", Shift: "H" },
  i: { Symbol: "i", Shift: "I" },
  j: { Symbol: "j", Shift: "J" },
  k: { Symbol: "k", Shift: "K" },
  l: { Symbol: "l", Shift: "L" },
  m: { Symbol: "m", Shift: "M" },
  n: { Symbol: "n", Shift: "N" },
  o: { Symbol: "o", Shift: "O" },
  p: { Symbol: "p", Shift: "P" },
  q: { Symbol: "q", Shift: "Q" },
  r: { Symbol: "r", Shift: "R" },
  s: { Symbol: "s", Shift: "S" },
  t: { Symbol: "t", Shift: "T" },
  u: { Symbol: "u", Shift: "U" },
  v: { Symbol: "v", Shift: "V" },
  w: { Symbol: "w", Shift: "W" },
  x: { Symbol: "x", Shift: "X" },
  y: { Symbol: "y", Shift: "Y" },
  z: { Symbol: "z", Shift: "Z" },
  "`": { Symbol: "`", Shift: "~" },
  "-": { Symbol: "-", Shift: "_" },
  "=": { Symbol: "=", Shift: "+" },
  ";": { Symbol: ";", Shift: ":" },
  "'": { Symbol: "'", Shift: '"' },
  "[": { Symbol: "[", Shift: "{" },
  "]": { Symbol: "]", Shift: "}" },
  "\\": { Symbol: "\\", Shift: "|" },
  ",": { Symbol: ",", Shift: "<" },
  ".": { Symbol: ".", Shift: ">" },
  "/": { Symbol: "/", Shift: "?" },
  Backspace: { Symbol: "⌫", Shift: "" },
  tab: { Symbol: "  ", Shift: "" },
  CapsLock: { Symbol: "⇪", Shift: "" },
  Shift: { Symbol: "⇧", Shift: "" },
  Enter: { Symbol: "⏎", Shift: "" },
  Control: { Symbol: "⌃", Shift: "" },
  Alt: { Symbol: "Alt", Shift: "" },
  Meta: { Symbol: "⌘", Shift: "" },
  ArrowLeft: { Symbol: "←", Shift: "" },
  ArrowUp: { Symbol: "↑", Shift: "" },
  ArrowDown: { Symbol: "↓", Shift: "" },
  ArrowRight: { Symbol: "→", Shift: "" },
  " ": { Symbol: " ", Shift: "" },
};
let buttonMap = new Map();
let height = 32;
let margin = 8;
let capslock = interactive.button(0, 0, keycodes["CapsLock"].Symbol);
let shift = interactive.button(0, 0, keycodes["Shift"].Symbol);
for (let row = 0; row < keys.length; row++) {
  let x = 32;
  let prev;
  for (let i = 0; i < keys[row].length; i++) {
    let key = keys[row][i];
    let width = 32;
    let button;
    switch (key) {
      case "CapsLock":
        button = capslock;
        width = 64;
        break;
      case "Shift":
        if (shift.x === 0) {
          button = shift;
        } else {
          button = interactive.button(
            0,
            0,
            keycodes[key] != undefined ? keycodes[key].Symbol : key
          );
        }
        width = 90;
        break;
      case "tab":
        width = 50;
        button = interactive.button(
          0,
          0,
          keycodes[key] != undefined ? keycodes[key].Symbol : key
        );
        break;
      case " ":
        width = 176;
        button = interactive.button(
          0,
          0,
          keycodes[key] != undefined ? keycodes[key].Symbol : key
        );
        break;
      case "Meta":
        width = 50;
        button = interactive.button(
          0,
          0,
          keycodes[key] != undefined ? keycodes[key].Symbol : key
        );
        break;
      default:
        button = interactive.button(
          0,
          0,
          keycodes[key] != undefined ? keycodes[key].Symbol : key
        );
        if (keycodes[key] != undefined) {
          if (keycodes[key].Shift != "") {
            button.addDependency(shift, capslock);
            button.update = () => {
              if (shift.active || capslock.active) {
                button.label.contents = keycodes[key].Shift;
              } else {
                button.label.contents = keycodes[key].Symbol;
              }
            };
          }
        }
    }
    button.x = x;
    button.y = 64 + row * (height + margin);
    if (button.box.width < width) {
      button.box.width = width;
    }
    let bbox = button.root.getBBox();
    x += bbox.width + margin;
    buttons.push(button);
    prev = button;
    buttonMap.set(key, button);
    if (key === "ArrowUp") {
      button.box.height = 16;
      button.label.root.style.display = "none";
    } else if (key === "ArrowDown") {
      button.box.height = 16;
      button.x -= 32 + margin;
      button.y += 16;
      button.label.root.style.display = "none";
      x -= bbox.width + margin;
    }
  }
  let right = prev.x;
  if (right < 630) {
    prev.box.width = 630 - right;
  }
}
// console.log(keycodes["0"], shift, capslock);
let active = [];
window.onkeydown = function (event) {
  for (let i = 0; i < buttons.length; i++) {
    let button = buttons[i];
    if (
      button.label.contents === event.key ||
      (keycodes[event.key] != undefined &&
        button.label.contents === keycodes[event.key].Symbol)
    ) {
      button.box.style.fill = "#f8f8f8";
      button.label.style.fill = "#404040";
      button.active = true;
      active.push(button);
    }
  }
  buffer += `'${event.key}',`;
};
window.onkeyup = function (event) {
  let newActive = [];
  for (let button of active) {
    if (
      button.label.contents === event.key ||
      (keycodes[event.key] != undefined &&
        button.label.contents === keycodes[event.key].Symbol)
    ) {
      button.box.style.fill = "";
      button.label.style.fill = "";
      button.active = false;
    } else {
      newActive.push(button);
    }
  }
  active = newActive;
};
let bbox = interactive.input.root.getBBox();
interactive.setViewBox(
  bbox.x - margin,
  bbox.y,
  bbox.width + 2 * margin,
  bbox.height
);
//# sourceMappingURL=keyboard.js.map


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  • 原文地址：https://blog.csdn.net/liulang68/article/details/138069432