MVT/gfx-test.html at main · ajayan508/MVT · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Hyperlink Buttons</title>
    <style>
        body {
            font-family: sans-serif;
            display: flex;
            flex-direction: column;
            align-items: flex-start; /* Left align to page */
            margin-left: 20px;
        }

        .container {
            display: flex;
            flex-direction: column;
            gap: 20px; /* Vertical alignment */
        }

        .nav-button {
            padding: 10px 15px;
            font-size: 16px;
	    font-weight: bold;
            text-decoration: none;
            color: white;
            background-color: #007BFF;
            border: none;
            cursor: pointer;
            width: 200px; /* Fixed width for alignment */
            text-align: left;
            box-sizing: border-box;
            display: block; /* Ensures the whole area is clickable */
        }

        .nav-button:focus, .nav-button:hover {
            outline: 2px solid #ff5733;
        }

        .back-link {
            margin-top: 20px;
            text-decoration: none;
            color: #333;
            cursor: pointer;
            padding: 5px 0;
            display: inline-block;
            font-weight: bold;
        }

        .back-link:focus, .back-link:hover {
            color: #E74C3C;
            text-decoration: underline;
            outline: none;
        }
    </style>
</head>
<body>
    <h1>Graphics tests</h1>

    <div class="container">
        <!-- Button 1 -->
        <a href="https://webglsamples.org/fishtank/fishtank.html" target="_blank" class="nav-button" id="button1" tabindex="0">
            Test #1 - Fishtank
        </a>

        <!-- Button 2 -->
        <a href="https://webglsamples.org/aquarium/aquarium.html" target="_blank" class="nav-button" id="button2" tabindex="0">
            Test #2 - Aquarium
        </a>
    </div>

    <!-- Go Back Link -->
    <a href="#" onclick="history.back(); return false;" class="back-link" tabindex="0" id="backLink">
        ← Go Back to Previous Page
    </a>

    <script>
        // Focus on the first button when the page loads
        window.onload = function() {
            document.getElementById('button1').focus();
        };

        const backgroundColor = "#FFFFFF"; //White background

        document.body.style.backgroundColor = backgroundColor;

        // Keyboard navigation functionality
        document.addEventListener('keydown', function(e) {
            const focusedElement = document.activeElement;
            let nextElement = null;

            if (e.key === 'ArrowDown' || e.key === 'ArrowUp') {
                e.preventDefault(); // Prevent scrolling the page
            }

            if (e.key === 'ArrowDown') {
                if (focusedElement.id === 'button1') {
                    nextElement = document.getElementById('button2');
                } else if (focusedElement.id === 'button2') {
                    nextElement = document.getElementById('backLink');
                }
            } else if (e.key === 'ArrowUp') {
                if (focusedElement.id === 'button2') {
                    nextElement = document.getElementById('button1');
                } else if (focusedElement.id === 'backLink') {
                    nextElement = document.getElementById('button2');
                }
            }

            if (nextElement) {
                nextElement.focus();
            }

            if (e.key === 'Enter') {
                if (focusedElement.id === 'button1') {
                    window.location.href = 'https://webglsamples.org/fishtank/fishtank.html';
                }
                else if (focusedElement.id === 'button2') {
                    window.location.href = 'https://webglsamples.org/aquarium/aquarium.html';
                }
            }
        });
    </script>

</body>
</html>