img2ansi/index.html at master · vibheksoni/img2ansi · 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>Img2Ansi</title>
    <script src="https://cdn.tailwindcss.com"></script>
    <link href="https://fonts.googleapis.com/css2?family=Inter:wght@400;500;700&display=swap" rel="stylesheet">
    <link href="https://fonts.googleapis.com/css2?family=Roboto+Mono:wght@400&display=swap" rel="stylesheet">
    <script src="Lib/img2ansi.js"></script>
    <style>
        body {
            font-family: 'Inter', sans-serif;
            background-color: #f0f4f8;
        }
        .ansi-output-container {
            white-space: pre;
            overflow-x: auto;
            word-break: normal;
            overflow-wrap: normal;
            max-height: 350px;
            font-family: 'Roboto Mono', monospace;
            line-height: 1;
            font-size: 10px;
            background-color: #1a202c;
            color: #e2e8f0;
            padding: 0.75rem 1rem;
            border-radius: 0.5rem;
            box-shadow: inset 0 2px 4px 0 rgba(0, 0, 0, 0.06);
        }
        .ansi-output-container::-webkit-scrollbar { width: 8px; height: 8px; }
        .ansi-output-container::-webkit-scrollbar-track { background: #2d3748; border-radius: 4px; }
        .ansi-output-container::-webkit-scrollbar-thumb { background: #4a5568; border-radius: 4px; }
        .ansi-output-container::-webkit-scrollbar-thumb:hover { background: #718096; }
        .ansi-rendered-art span { display: inline-block; }
        .input-group { margin-bottom: 1rem; }
        .input-group label { display: block; margin-bottom: 0.25rem; font-weight: 500; color: #4a5568;}
        .input-group input, .input-group select {
            width: 100%;
            padding: 0.5rem 0.75rem;
            border: 1px solid #cbd5e0;
            border-radius: 0.375rem;
            box-shadow: sm;
        }
    </style>
</head>
<body class="text-gray-800">
    <div class="container mx-auto p-4 sm:p-6 md:p-8 max-w-5xl">
        <header class="mb-8 text-center">
            <h1 class="text-3xl sm:text-4xl font-bold text-blue-600">Advanced Image to ANSI Art</h1>
            <p class="text-sm text-gray-600 mt-1">Customize your ANSI art generation with more options!</p>
        </header>
        <section class="mb-6 p-6 bg-white rounded-xl shadow-lg">
            <h2 class="text-xl font-semibold text-gray-700 mb-4 border-b pb-2">1. Upload Image</h2>
            <input type="file" id="imageUpload" accept="image/*" class="block w-full text-sm text-gray-600 file:mr-4 file:py-2 file:px-4 file:rounded-lg file:border-0 file:text-sm file:font-semibold file:bg-blue-50 file:text-blue-700 hover:file:bg-blue-100 cursor-pointer transition-colors duration-150"/>
            <div class="mt-4 text-center">
                <img id="imagePreview" src="https://placehold.co/400x300/e2e8f0/94a3b8?text=Image+Preview" alt="Image Preview" class="mt-2 rounded-md max-w-full sm:max-w-md mx-auto shadow-md border border-gray-200"/>
            </div>
        </section>
        <section class="mb-6 p-6 bg-white rounded-xl shadow-lg">
            <h2 class="text-xl font-semibold text-gray-700 mb-4 border-b pb-2">2. Output Settings</h2>
            <div class="grid grid-cols-1 md:grid-cols-2 gap-6">
                <div class="input-group">
                    <label for="outputWidth">Width (characters, optional):</label>
                    <input type="number" id="outputWidth" value="80" min="10" max="500" placeholder="e.g., 80">
                </div>
                <div class="input-group">
                    <label for="outputHeight">Height (rows, optional):</label>
                    <input type="number" id="outputHeight" min="5" max="300" placeholder="e.g., 40">
                </div>
                <div class="input-group md:col-span-2">
                    <label for="qualitySelect">Quality:</label>
                    <select id="qualitySelect" class="focus:ring-blue-500 focus:border-blue-500">
                        <option value="high" selected>High (24-bit color)</option>
                        <option value="perfect">Perfect (24-bit, precise scaling)</option>
                        <option value="medium">Medium (Quantized 24-bit)</option>
                        <option value="low">Low (Highly Quantized 24-bit)</option>
                    </select>
                    <p class="text-xs text-gray-500 mt-1">"Perfect" uses user-defined width/height directly. "High" maintains aspect ratio if one dimension is missing. "Medium" and "Low" reduce color fidelity.</p>
                </div>
            </div>
        </section>
        <section class="mb-6 text-center">
            <button id="generateButton" class="bg-blue-600 hover:bg-blue-700 text-white font-bold py-3 px-6 rounded-lg shadow-md hover:shadow-lg transform hover:scale-105 transition-all duration-150 focus:outline-none focus:ring-2 focus:ring-blue-500 focus:ring-opacity-50 disabled:opacity-50 disabled:cursor-not-allowed" disabled>
                Generate ANSI Art
            </button>
            <div id="loadingIndicator" class="mt-3 text-sm text-blue-600 hidden flex items-center justify-center">
                <svg class="animate-spin -ml-1 mr-3 h-5 w-5 text-blue-600" xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24">
                    <circle class="opacity-25" cx="12" cy="12" r="10" stroke="currentColor" stroke-width="4"></circle>
                    <path class="opacity-75" fill="currentColor" d="M4 12a8 8 0 018-8V0C5.373 0 0 5.373 0 12h4zm2 5.291A7.962 7.962 0 014 12H0c0 3.042 1.135 5.824 3 7.938l3-2.647z"></path>
                </svg>
                Processing...
            </div>
            <div id="errorDisplay" role="alert" class="mt-3 p-3 bg-red-100 text-red-700 rounded-md hidden text-sm shadow"></div>
        </section>
        <section id="resultContainer" class="hidden mb-8">
            <h2 class="text-xl font-semibold mb-2 text-gray-700 border-b pb-2">3. Generated ANSI Art</h2>
            <h3 class="text-lg font-medium mb-1 text-gray-600 mt-4">Rendered Preview:</h3>
            <div id="ansiRenderedPreview" class="ansi-output-container ansi-rendered-art mb-4"></div>
            <h3 class="text-lg font-medium mb-1 text-gray-600">Copyable `printf` Command:</h3>
            <button id="copyButton" class="mb-2 bg-green-500 hover:bg-green-600 text-white font-bold py-2 px-4 rounded-md text-sm shadow hover:shadow-md transform hover:scale-105 transition-all duration-150 focus:outline-none focus:ring-2 focus:ring-green-500 focus:ring-opacity-50">
                Copy Command
            </button>
            <pre id="ansiRawOutput" class="ansi-output-container"></pre>
        </section>
        <footer class="text-center mt-12 text-xs text-gray-500">
            <p>ANSI Art Converter</p>
        </footer>
    </div>
    <script>
        const imageUpload = document.getElementById('imageUpload');
        const imagePreview = document.getElementById('imagePreview');
        const outputWidthInput = document.getElementById('outputWidth');
        const outputHeightInput = document.getElementById('outputHeight');
        const qualitySelect = document.getElementById('qualitySelect');
        const generateButton = document.getElementById('generateButton');
        const loadingIndicator = document.getElementById('loadingIndicator');
        const errorDisplay = document.getElementById('errorDisplay');
        const resultContainer = document.getElementById('resultContainer');
        const ansiRenderedPreview = document.getElementById('ansiRenderedPreview');
        const ansiRawOutput = document.getElementById('ansiRawOutput');
        const copyButton = document.getElementById('copyButton');
        let uploadedImage = null;
        const ACTUAL_ESC = '\u001b';
        const PRINTF_ESC = '\\e';

        // Initialize the Img2Ansi library
        const img2ansi = new Img2Ansi({
            escChar: ACTUAL_ESC,
            lineEnding: '\n',
            quality: 'high'
        });

        imageUpload.addEventListener('change', (event) => {
            const file = event.target.files[0];
            if (file) {
                if (!file.type.startsWith('image/')) {
                    showError('Please upload a valid image file.');
                    uploadedImage = null;
                    imagePreview.src = "https://placehold.co/400x300/e2e8f0/94a3b8?text=Image+Preview";
                    generateButton.disabled = true;
                    return;
                }
                const reader = new FileReader();
                reader.onload = (e) => {
                    imagePreview.src = e.target.result;
                    uploadedImage = new Image();
                    uploadedImage.onload = () => {
                        generateButton.disabled = false;
                        hideError();
                    };
                    uploadedImage.onerror = () => {
                        showError('Failed to load image.');
                        uploadedImage = null;
                        imagePreview.src = "https://placehold.co/400x300/e2e8f0/94a3b8?text=Image+Preview";
                        generateButton.disabled = true;
                    };
                    uploadedImage.src = e.target.result;
                };
                reader.onerror = () => {
                    showError('Failed to read file.');
                    uploadedImage = null;
                    imagePreview.src = "https://placehold.co/400x300/e2e8f0/94a3b8?text=Image+Preview";
                    generateButton.disabled = true;
                };
                reader.readAsDataURL(file);
            } else {
                uploadedImage = null;
                imagePreview.src = "https://placehold.co/400x300/e2e8f0/94a3b8?text=Image+Preview";
                generateButton.disabled = true;
            }
        });

        generateButton.addEventListener('click', async () => {
            if (!uploadedImage || !uploadedImage.complete || uploadedImage.naturalHeight === 0) {
                showError('Please upload and wait for a valid image to load.');
                return;
            }
            loadingIndicator.classList.remove('hidden');
            resultContainer.classList.add('hidden');
            generateButton.disabled = true;
            hideError();
            await new Promise(resolve => setTimeout(resolve, 50));
            try {
                let desiredAnsiWidth = parseInt(outputWidthInput.value, 10);
                let desiredAnsiHeight = parseInt(outputHeightInput.value, 10);
                const quality = qualitySelect.value;
                if (!desiredAnsiWidth && !desiredAnsiHeight) {
                    desiredAnsiWidth = 80;
                }

                // Use the Img2Ansi library to convert the image
                const rawAnsiForRendering = img2ansi.convertToAnsi({
                    img: uploadedImage,
                    width: desiredAnsiWidth,
                    height: desiredAnsiHeight,
                    quality: quality,
                    lineEnding: '\n',
                    escChar: ACTUAL_ESC
                });

                // Render the ANSI art to HTML
                img2ansi.renderToHtml(rawAnsiForRendering, ansiRenderedPreview);

                // Generate the printf command
                const printfCommandString = img2ansi.toPrintfCommand(rawAnsiForRendering);
                ansiRawOutput.textContent = printfCommandString;

                resultContainer.classList.remove('hidden');
            } catch (err) {
                console.error("Error generating ANSI art:", err);
                showError(`Error: ${err.message}`);
            } finally {
                loadingIndicator.classList.add('hidden');
                generateButton.disabled = !uploadedImage || !uploadedImage.complete || uploadedImage.naturalHeight === 0;
            }
        });

        function copyTextToClipboard(text, buttonElement) {
            if (!text) return;
            const textarea = document.createElement('textarea');
            textarea.value = text;
            textarea.style.position = 'fixed';
            textarea.style.opacity = '0';
            document.body.appendChild(textarea);
            textarea.select();
            try {
                document.execCommand('copy');
                const originalText = buttonElement.textContent;
                const originalBgMatch = buttonElement.className.match(/bg-[\w-]+-\d+/);
                const originalBg = originalBgMatch ? originalBgMatch[0] : 'bg-gray-500';
                buttonElement.textContent = 'Copied!';
                buttonElement.classList.remove(originalBg);
                buttonElement.classList.add('bg-green-600');
                setTimeout(() => {
                    buttonElement.textContent = originalText;
                    buttonElement.classList.remove('bg-green-600');
                    buttonElement.classList.add(originalBg);
                }, 1500);
            } catch (err) {
                console.error('Failed to copy text using execCommand: ', err);
                if (navigator.clipboard && window.isSecureContext) {
                    navigator.clipboard.writeText(text).then(() => {
                        const originalText = buttonElement.textContent;
                        const originalBgMatch = buttonElement.className.match(/bg-[\w-]+-\d+/);
                        const originalBg = originalBgMatch ? originalBgMatch[0] : 'bg-gray-500';
                        buttonElement.textContent = 'Copied!';
                        buttonElement.classList.remove(originalBg);
                        buttonElement.classList.add('bg-green-600');
                        setTimeout(() => {
                            buttonElement.textContent = originalText;
                            buttonElement.classList.remove('bg-green-600');
                            buttonElement.classList.add(originalBg);
                        }, 1500);
                    }).catch(clipErr => {
                        showError('Failed to copy. Please copy manually.');
                        console.error('navigator.clipboard.writeText failed: ', clipErr);
                    });
                } else {
                    showError('Failed to copy. Please select the text and copy manually.');
                }
            }
            document.body.removeChild(textarea);
        }

        copyButton.addEventListener('click', () => copyTextToClipboard(ansiRawOutput.textContent, copyButton));

        function showError(message) {
            errorDisplay.textContent = message;
            errorDisplay.classList.remove('hidden');
            errorDisplay.setAttribute('aria-live', 'assertive');
        }

        function hideError() {
            errorDisplay.classList.add('hidden');
            errorDisplay.removeAttribute('aria-live');
        }
    </script>
</body>
</html>