Developer-Toolbox/tool-50-Color-Accessibility-Grid.html at main · Aliriyaj007/Developer-Toolbox · 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>Tool 50 - Color Accessibility Grid - Developer Toolbox</title>
    <link rel="stylesheet" href="assets/core.css">
    <style>
        .split-view {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1.5rem;
            margin-bottom: 2rem;
            margin-top: 1rem;
        }

        @media (min-width: 900px) {
            .split-view {
                grid-template-columns: 300px 1fr;
            }
        }

        .controls-panel {
            background: rgba(0, 0, 0, 0.4);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 1.5rem;
        }

        .input-group {
            margin-bottom: 1rem;
        }

        .input-group label {
            display: block;
            color: var(--text-secondary);
            font-weight: bold;
            margin-bottom: 0.5rem;
        }

        textarea {
            width: 100%;
            height: 120px;
            background: var(--bg-main);
            color: var(--text-primary);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            padding: 0.8rem;
            font-family: var(--font-mono);
            font-size: 14px;
            resize: vertical;
            white-space: nowrap;
        }

        .grid-container {
            overflow-x: auto;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-color);
            background: #ffffff;
            /* Contrast grid needs white bg for accurate representation */
            color: #000;
            /* Dark mode overrides default */
        }

        .contrast-table {
            width: 100%;
            border-collapse: collapse;
        }

        .contrast-table th,
        .contrast-table td {
            border: 1px solid #ddd;
            padding: 1rem;
            text-align: center;
            min-width: 100px;
        }

        .contrast-table th {
            background: #f5f5f5;
            color: #333;
            font-family: var(--font-mono);
            font-size: 0.9rem;
            position: sticky;
            top: 0;
            z-index: 10;
        }

        .contrast-table th:first-child {
            left: 0;
            z-index: 20;
        }

        .contrast-cell {
            position: relative;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            height: 100px;
            font-family: var(--font-main);
            transition: transform 0.2s;
            cursor: pointer;
        }

        .contrast-cell:hover {
            transform: scale(1.05);
            z-index: 5;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
            border-radius: 4px;
        }

        .ratio-val {
            font-size: 1.4rem;
            font-weight: bold;
            font-family: var(--font-mono);
            margin-bottom: 0.2rem;
        }

        .wcag-badges {
            display: flex;
            gap: 0.3rem;
            font-size: 0.7rem;
            font-weight: bold;
        }

        .badge-pass {
            background: #2ea043;
            color: white;
            padding: 2px 5px;
            border-radius: 3px;
        }

        .badge-fail {
            background: #da3633;
            color: white;
            padding: 2px 5px;
            border-radius: 3px;
        }

        .sample-text {
            font-size: 0.8rem;
            margin-top: 0.3rem;
        }

        .sample-large {
            font-size: 1.2rem;
            font-weight: bold;
        }
    </style>
</head>

<body class="theme-dark">
    <div class="tool-canvas-container" id="canvas-container"></div>
    <main class="main-content">
        <div class="container" style="max-width: 1400px;">
            <div class="tool-header">
                <div>
                    <a href="index.html" class="back-link">← Back to Toolbox</a>
                    <h1>50. Color Accessibility Grid</h1>
                </div>
                <div>
                    <select id="theme-select" aria-label="Select Theme">
                        <option value="dark">Dark Theme</option>
                        <option value="light">Light Theme</option>
                        <option value="solarized">Solarized</option>
                        <option value="neon">Neon Glow</option>
                        <option value="highcontrast">High Contrast</option>
                    </select>
                </div>
            </div>

            <div class="glass-panel">
                <div class="split-view">

                    <div class="controls-panel">
                        <div class="input-group">
                            <label>Text Colors (Foreground)</label>
                            <textarea id="text-colors">#000000
#FFFFFF
#1A202C
#718096
#3182CE
#E53E3E</textarea>
                            <small style="color:var(--text-secondary); display:block; margin-top:0.3rem;">One HEX color
                                per line</small>
                        </div>

                        <div class="input-group">
                            <label>Background Colors</label>
                            <textarea id="bg-colors">#FFFFFF
#F7FAFC
#EDF2F7
#2D3748
#1A202C
#EBF8FF</textarea>
                        </div>

                        <p style="color:var(--text-secondary); font-size: 0.9rem; line-height:1.5;">
                            <strong>WCAG 2.1 Guidelines:</strong><br><br>
                            <strong>AA Normal:</strong> 4.5:1<br>
                            <strong>AA Large:</strong> 3.0:1<br>
                            <strong>AAA Normal:</strong> 7.0:1<br>
                            <strong>AAA Large:</strong> 4.5:1<br>
                            <br>
                            <span style="opacity: 0.7">Large text is defined as 14pt (18.66px) and bold or larger, or
                                18pt (24px) or larger.</span>
                        </p>
                    </div>

                    <div class="grid-container">
                        <table class="contrast-table" id="contrast-table">
                            <!-- Matrix generated here -->
                        </table>
                    </div>

                </div>
            </div>
        </div>
    </main>

    <footer class="global-footer">
        <div class="container">
            Made with ❤️ by <a href="https://github.com/Aliriyaj007" target="_blank">Aliriyaj007</a>
        </div>
    </footer>

    <script src="assets/core.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/three.js/r134/three.min.js"></script>
    <script>
        const textColorsInput = document.getElementById('text-colors');
        const bgColorsInput = document.getElementById('bg-colors');
        const contrastTable = document.getElementById('contrast-table');

        // Hex to RGB
        function hexToRgb(hex) {
            let result = /^#?([a-f\d]{2})([a-f\d]{2})([a-f\d]{2})$/i.exec(hex);
            return result ? {
                r: parseInt(result[1], 16),
                g: parseInt(result[2], 16),
                b: parseInt(result[3], 16)
            } : null;
        }

        // Relative luminance calculation
        function getLuminance(r, g, b) {
            let a = [r, g, b].map(function (v) {
                v /= 255;
                return v <= 0.03928
                    ? v / 12.92
                    : Math.pow((v + 0.055) / 1.055, 2.4);
            });
            return a[0] * 0.2126 + a[1] * 0.7152 + a[2] * 0.0722;
        }

        // Calculate Contrast Ratio
        function getContrastRatio(hex1, hex2) {
            const rgb1 = hexToRgb(hex1);
            const rgb2 = hexToRgb(hex2);
            if (!rgb1 || !rgb2) return -1;

            const lum1 = getLuminance(rgb1.r, rgb1.g, rgb1.b);
            const lum2 = getLuminance(rgb2.r, rgb2.g, rgb2.b);

            const brightest = Math.max(lum1, lum2);
            const darkest = Math.min(lum1, lum2);

            return (brightest + 0.05) / (darkest + 0.05);
        }

        function isValidHex(hex) {
            return /^#([0-9A-F]{3}){1,2}$/i.test(hex.trim());
        }

        function extractColors(val) {
            return val.split('\n').map(l => l.trim()).filter(l => isValidHex(l));
        }

        function generateGrid() {
            const tColors = extractColors(textColorsInput.value);
            const bColors = extractColors(bgColorsInput.value);

            let html = `<thead><tr><th></th>`;
            tColors.forEach(tc => {
                html += `<th>Text<br><strong style="color:${tc}; background:#fff; padding:2px 4px; border-radius:3px; outline:1px solid #ddd;">${tc}</strong></th>`;
            });
            html += `</tr></thead><tbody>`;

            const ratioDataGrid = [];

            bColors.forEach((bc, bIdx) => {
                html += `<tr><th style="background:${bc}; color:${getContrastRatio(bc, '#fff') > getContrastRatio(bc, '#000') ? '#fff' : '#000'}; border-right:2px solid #aaa;">Bg<br><strong>${bc}</strong></th>`;

                const rowRatios = [];

                tColors.forEach((tc, tIdx) => {
                    const ratio = getContrastRatio(tc, bc);
                    rowRatios.push(ratio);

                    if (ratio === -1) {
                        html += `<td>Err</td>`;
                        return;
                    }

                    const ratioFixed = ratio.toFixed(2);

                    // WCAG Rules
                    const passAANormal = ratio >= 4.5;
                    const passAALarge = ratio >= 3.0;
                    const passAAANormal = ratio >= 7.0;

                    let badges = '';
                    if (passAAANormal) badges += `<span class="badge-pass">AAA</span>`;
                    else if (passAANormal) badges += `<span class="badge-pass">AA</span>`;
                    else if (passAALarge) badges += `<span class="badge-pass">AA LG</span>`;
                    else badges += `<span class="badge-fail">FAIL</span>`;

                    html += `
                        <td style="padding:0;">
                            <div class="contrast-cell" style="background:${bc}; color:${tc};">
                                <div class="ratio-val">${ratioFixed}</div>
                                <div class="wcag-badges">${badges}</div>
                                <div class="sample-text">Normal</div>
                                <div class="sample-text sample-large">Large</div>
                            </div>
                        </td>
                    `;
                });
                ratioDataGrid.push(rowRatios);
                html += `</tr>`;
            });

            html += `</tbody>`;
            contrastTable.innerHTML = html;

            // Trigger 3D update
            if (window.update3DGrid) {
                window.update3DGrid(ratioDataGrid, tColors, bColors);
            }
        }

        textColorsInput.addEventListener('input', () => { setTimeout(generateGrid, 300); });
        bgColorsInput.addEventListener('input', () => { setTimeout(generateGrid, 300); });


        // 3D Visualization: A grid of 3D bars where height represents contrast ratio
        let scene, camera, renderer, gridGroup;
        let barMeshes = [];

        function init3D() {
            const container = document.getElementById('canvas-container');
            if (!container || !window.THREE) return;

            scene = new THREE.Scene();
            camera = new THREE.PerspectiveCamera(45, window.innerWidth / window.innerHeight, 0.1, 100);
            camera.position.set(0, 10, 15);
            camera.lookAt(0, 0, 0);

            renderer = new THREE.WebGLRenderer({ alpha: true, antialias: true });
            renderer.setSize(window.innerWidth, window.innerHeight);
            container.appendChild(renderer.domElement);

            const ambientLight = new THREE.AmbientLight(0xffffff, 0.8);
            scene.add(ambientLight);

            const dirLight = new THREE.DirectionalLight(0xffffff, 0.6);
            dirLight.position.set(5, 10, 5);
            scene.add(dirLight);

            gridGroup = new THREE.Group();
            scene.add(gridGroup);

            // Shift whole scene left slightly
            scene.position.x = 2;

            window.addEventListener('resize', () => {
                camera.aspect = window.innerWidth / window.innerHeight;
                camera.updateProjectionMatrix();
                renderer.setSize(window.innerWidth, window.innerHeight);
            });

            animate();
        }

        window.update3DGrid = (ratioMatrix, tColors, bColors) => {
            if (!gridGroup) return;

            // Clear old meshes
            while (gridGroup.children.length > 0) {
                gridGroup.remove(gridGroup.children[0]);
            }
            barMeshes = [];

            const rows = ratioMatrix.length;
            if (rows === 0) return;
            const cols = ratioMatrix[0].length;
            if (cols === 0) return;

            const spacing = 1.2;
            const offsetX = -(cols * spacing) / 2;
            const offsetZ = -(rows * spacing) / 2;

            for (let r = 0; r < rows; r++) {
                for (let c = 0; c < cols; c++) {
                    const ratio = ratioMatrix[r][c];
                    // Map ratio (1 to 21) to height (0.5 to 8)
                    const height = Math.max(0.2, (ratio / 21) * 8);

                    const geo = new THREE.BoxGeometry(0.8, height, 0.8);

                    // Material color based on background color being tested
                    const baseColorHex = parseInt(bColors[r].replace('#', ''), 16);

                    const mat = new THREE.MeshPhongMaterial({
                        color: baseColorHex,
                        shininess: 90,
                        transparent: true,
                        opacity: 0.8
                    });

                    // Outline edges
                    const edges = new THREE.EdgesGeometry(geo);
                    const lineMat = new THREE.LineBasicMaterial({
                        color: parseInt(tColors[c].replace('#', ''), 16), // outline with Text color
                        linewidth: 2
                    });
                    const line = new THREE.LineSegments(edges, lineMat);

                    const mesh = new THREE.Mesh(geo, mat);
                    mesh.add(line);

                    mesh.position.set(offsetX + c * spacing, height / 2 - 4 /* drop down */, offsetZ + r * spacing);

                    // Animate entry logic
                    mesh.scale.y = 0.01;
                    mesh.userData = { targetScaleY: 1 };

                    gridGroup.add(mesh);
                    barMeshes.push(mesh);
                }
            }
        };

        function animate() {
            requestAnimationFrame(animate);

            if (gridGroup) {
                // slowly rotate entire grid
                gridGroup.rotation.y += 0.002;

                // Animate bars growing
                barMeshes.forEach(mesh => {
                    mesh.scale.y += (mesh.userData.targetScaleY - mesh.scale.y) * 0.1;
                });
            }

            renderer.render(scene, camera);
        }

        document.addEventListener('DOMContentLoaded', () => {
            init3D();
            generateGrid();
        });
    </script>
</body>

</html>