safenote/create-maskable-icon.html at main · codeaashu/safenote · GitHub

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<!DOCTYPE html>
<html>
<head>
    <title>Create Maskable Icon</title>
    <style>
        body { font-family: Arial, sans-serif; padding: 20px; }
        canvas { border: 1px solid #ccc; margin: 10px 0; }
        .info { background: #f0f0f0; padding: 15px; margin: 10px 0; border-radius: 5px; }
        button { padding: 10px 20px; margin: 5px; cursor: pointer; }
    </style>
</head>
<body>
    <h1>SafeNote Maskable Icon Generator</h1>

    <div class="info">
        <h3>📱 Maskable Icon Requirements:</h3>
        <ul>
            <li><strong>Safe Zone:</strong> At least 10% padding on all sides</li>
            <li><strong>Content Area:</strong> Logo should fit in center 80% of the icon</li>
            <li><strong>Background:</strong> Should work on any background (use contrasting colors)</li>
        </ul>
    </div>

    <div>
        <label>Select original SafeNote icon:</label>
        <input type="file" id="fileInput" accept="image/*">
    </div>

    <div>
        <label>Background Color:</label>
        <select id="bgColor">
            <option value="#000000">Black</option>
            <option value="#1e293b" selected>Dark Blue (Theme)</option>
            <option value="#ffffff">White</option>
            <option value="#6366f1">Purple</option>
        </select>
    </div>

    <div>
        <label>Padding (%):</label>
        <input type="range" id="padding" min="10" max="30" value="15" oninput="updatePadding()">
        <span id="paddingValue">15%</span>
    </div>

    <canvas id="canvas" width="512" height="512"></canvas>

    <div>
        <button onclick="generateIcon()">Generate Maskable Icon</button>
        <button onclick="downloadIcon()">Download Icon</button>
        <button onclick="testMasks()">Test with Masks</button>
    </div>

    <div id="testArea" style="display:none;">
        <h3>🔍 Test Different Masks:</h3>
        <div style="display: flex; gap: 20px; flex-wrap: wrap;">
            <div>
                <p>Circle Mask</p>
                <canvas id="circleTest" width="100" height="100" style="border-radius: 50%;"></canvas>
            </div>
            <div>
                <p>Rounded Square</p>
                <canvas id="roundedTest" width="100" height="100" style="border-radius: 20%;"></canvas>
            </div>
            <div>
                <p>Square</p>
                <canvas id="squareTest" width="100" height="100"></canvas>
            </div>
        </div>
    </div>

    <script>
        let originalImage = null;
        const canvas = document.getElementById('canvas');
        const ctx = canvas.getContext('2d');

        document.getElementById('fileInput').addEventListener('change', function(e) {
            const file = e.target.files[0];
            if (file) {
                const reader = new FileReader();
                reader.onload = function(e) {
                    const img = new Image();
                    img.onload = function() {
                        originalImage = img;
                        generateIcon();
                    };
                    img.src = e.target.result;
                };
                reader.readAsDataURL(file);
            }
        });

        function updatePadding() {
            const value = document.getElementById('padding').value;
            document.getElementById('paddingValue').textContent = value + '%';
            if (originalImage) generateIcon();
        }

        function generateIcon() {
            if (!originalImage) return;

            const padding = parseInt(document.getElementById('padding').value);
            const bgColor = document.getElementById('bgColor').value;

            // Clear canvas and set background
            ctx.fillStyle = bgColor;
            ctx.fillRect(0, 0, 512, 512);

            // Calculate dimensions with padding
            const paddingPx = (512 * padding) / 100;
            const logoSize = 512 - (paddingPx * 2);

            // Draw the original image centered with padding
            ctx.drawImage(originalImage, paddingPx, paddingPx, logoSize, logoSize);

            // Draw safe zone guides
            ctx.strokeStyle = 'rgba(255, 0, 0, 0.3)';
            ctx.lineWidth = 2;
            ctx.setLineDash([10, 5]);
            ctx.strokeRect(paddingPx, paddingPx, logoSize, logoSize);

            // Draw center guides
            ctx.strokeStyle = 'rgba(0, 255, 0, 0.3)';
            ctx.setLineDash([5, 5]);
            ctx.beginPath();
            ctx.moveTo(256, 0);
            ctx.lineTo(256, 512);
            ctx.moveTo(0, 256);
            ctx.lineTo(512, 256);
            ctx.stroke();
            ctx.setLineDash([]);
        }

        function downloadIcon() {
            if (!originalImage) {
                alert('Please select an image first!');
                return;
            }

            // Create a clean version without guides
            const tempCanvas = document.createElement('canvas');
            tempCanvas.width = 512;
            tempCanvas.height = 512;
            const tempCtx = tempCanvas.getContext('2d');

            const padding = parseInt(document.getElementById('padding').value);
            const bgColor = document.getElementById('bgColor').value;
            const paddingPx = (512 * padding) / 100;
            const logoSize = 512 - (paddingPx * 2);

            tempCtx.fillStyle = bgColor;
            tempCtx.fillRect(0, 0, 512, 512);
            tempCtx.drawImage(originalImage, paddingPx, paddingPx, logoSize, logoSize);

            // Download
            const link = document.createElement('a');
            link.download = 'safenote-maskable.png';
            link.href = tempCanvas.toDataURL();
            link.click();
        }

        function testMasks() {
            if (!originalImage) return;

            document.getElementById('testArea').style.display = 'block';

            const tests = ['circleTest', 'roundedTest', 'squareTest'];
            tests.forEach(testId => {
                const testCanvas = document.getElementById(testId);
                const testCtx = testCanvas.getContext('2d');

                // Scale down the main canvas to 100x100
                testCtx.drawImage(canvas, 0, 0, 100, 100);
            });
        }
    </script>
</body>
</html>