blatt3taskd/taskD2.html at main · maax999/blatt3taskd · GitHub

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<!DOCTYPE html>
<html lang="de">
<head>
  <meta charset="UTF-8">
  <title>Taschenrechner D2</title>
  <style>
    body {
      font-family: sans-serif;
      padding: 20px;
      text-align: center;
    }

    #display {
      width: 300px;
      height: 50px;
      font-size: 24px;
      margin: 0 auto 20px;
      text-align: right;
      padding: 10px;
      border: 2px solid #ccc;
      border-radius: 5px;
      background-color: #f9f9f9;
    }

    .grid-container {
      display: grid;
      grid-template-columns: repeat(4, 60px);
      grid-gap: 10px;
      justify-content: center;
      margin: 0 auto;
    }

    .bottom-buttons {
      display: flex;
      justify-content: center;
      gap: 10px;
      margin-top: 10px;
    }

    button {
      width: 60px;
      height: 60px;
      font-size: 20px;
      cursor: pointer;
      background-color: #3b78c2;
      color: white;
      border: none;
      border-radius: 4px;
    }

    button:hover {
      background-color: #2f64a3;
    }

    #counter {
      font-weight: bold;
      margin-top: 20px;
    }

    #log {
      text-align: left;
      white-space: pre-wrap;
      margin-top: 30px;
      width: 90%;
      margin-left: auto;
      margin-right: auto;
      font-family: monospace;
      background-color: #f0f0f0;
      padding: 15px;
      border-radius: 5px;
    }
  </style>
</head>
<body>

<h1>Taschenrechner D2</h1>
<div id="display">0</div>

<div class="grid-container" id="calculator"></div>

<div class="bottom-buttons">
  <button id="equals">=</button>
  <button id="clear">C</button>
</div>

<div id="counter">Anzahl durchgeführter Rechungen: 0</div>

<div id="log"></div>

<script>
  const layout = [
    ['1', '2', '3', '4'],
    ['5', '6', '7', '8'],
    ['.', '9', '0', '*']
  ];

  const calculator = document.getElementById('calculator');
  const display = document.getElementById('display');
  const logDisplay = document.getElementById('log');
  const counterDisplay = document.getElementById('counter');
  const equalsButton = document.getElementById('equals');
  const clearButton = document.getElementById('clear');

  const keyWidth = 60; // px
  let lastCenter = null;
  let lastTime = null;
  let input = '';
  let calcCount = 0;
  let logEntries = [];

  layout.flat().forEach(key => {
    const btn = document.createElement('button');
    btn.textContent = key;
    btn.addEventListener('click', () => handleKeyPress(btn, key));
    calculator.appendChild(btn);
  });

  // Sondertasten
  equalsButton.addEventListener('click', () => handleKeyPress(equalsButton, '='));
  clearButton.addEventListener('click', () => {
    input = '';
    display.textContent = '0';
  });

  function handleKeyPress(button, key) {
    const rect = button.getBoundingClientRect();
    const center = {
      x: rect.left + rect.width / 2,
      y: rect.top + rect.height / 2
    };

    const now = performance.now();
    let id = null;
    let mt = null;

    if (lastCenter && lastTime !== null) {
      const dx = center.x - lastCenter.x;
      const dy = center.y - lastCenter.y;
      const D = Math.sqrt(dx * dx + dy * dy);
      id = D === 0 ? 0 : Math.log2((2 * D) / keyWidth);
      mt = (now - lastTime) / 1000;
    }

    lastCenter = center;
    lastTime = now;

    const logEntry = {
      taste: key,
      ID: id !== null ? id.toFixed(2) : null,
      MT: mt !== null ? mt.toFixed(2) : null
    };

    logEntries.push(logEntry);
    updateLogDisplay();

    if (key === '=') {
      try {
        const result = eval(input);
        const rounded = parseFloat(result.toFixed(10));
        display.textContent = rounded;
        input = rounded.toString();
        calcCount++;
        counterDisplay.textContent = `Anzahl durchgeführter Rechungen: ${calcCount}`;
      } catch {
        display.textContent = 'Fehler';
        input = '';
      }
    } else if (key !== 'C') {
      input += key;
      display.textContent = input;
    }
  }

  function updateLogDisplay() {
    logDisplay.textContent = logEntries.map(e => JSON.stringify(e, null, 2)).join('\n');
  }
</script>

</body>
</html>