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<!-- saved from url=(0032)https://quickcensor.lyonade.net/ -->
<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Quick Censor</title>
<!-- Tailwind CSS CDN -->
<script src="./censor_files/saved_resource"></script>
<!-- Inter Font -->
<link href="./censor_files/css2" rel="stylesheet">
<script src="./censor_files/jszip.min.js.download"></script>
<script src="./censor_files/gif-frames.js.download"></script>
<style>
body {
font-family: 'Inter', sans-serif;
-webkit-font-smoothing: antialiased;
-moz-osx-font-smoothing: grayscale;
}
/* Ensure canvas fills its parent container */
.canvas-container {
position: relative;
width: 100%;
/* Height is determined by the canvas content */
min-height: 300px; /* Ensure a minimum height for the drop zone */
max-height: 80vh; /* Limit height to prevent excessive vertical scrolling */
background-color: #374151; /* Dark gray background for empty canvas */
border-radius: 0.5rem; /* Rounded corners */
overflow: auto; /* Add scrollbars if canvas is larger than container */
display: flex;
justify-content: center;
align-items: center;
}
#drop-prompt {
text-align: center;
color: #9ca3af; /* gray-400 */
font-size: 1.125rem; /* text-lg */
pointer-events: none; /* Allow clicks to pass through to the container */
}
canvas {
/* position: absolute; */
/* top: 0; */
/* left: 0; */
/* width: 100%; */
/* height: 100%; */
display: block;
border-radius: 0.5rem;
max-width: 100%;
max-height: 100%;
/* Rounded corners for canvas */
}
input[type="range"]::-webkit-slider-thumb {
-webkit-appearance: none;
appearance: none;
width: 20px;
height: 20px;
border-radius: 50%;
background: #4F46E5; /* Indigo-600 */
cursor: pointer;
box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
margin-top: -8px; /* Center thumb vertically */
}
input[type="range"]::-moz-range-thumb {
width: 20px;
height: 20px;
border-radius: 50%;
background: #4F46E5; /* Indigo-600 */
cursor: pointer;
box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}
input[type="range"]::-webkit-slider-runnable-track {
width: 100%;
height: 6px;
background: #6366f1; /* Indigo-500 */
border-radius: 3px;
}
input[type="range"]::-moz-range-track {
width: 100%;
height: 6px;
background: #6366f1; /* Indigo-500 */
border-radius: 3px;
}
/* Hide drag & drop text in portrait mode (mobile) */
@media (orientation: portrait) {
#drop-prompt {
display: none !important;
}
}
/* Fix CSS warnings - override Tailwind defaults */
audio, canvas, embed, iframe, img, object, svg, video {
vertical-align: initial !important;
}
/* Fix appearance vendor prefix warnings */
input[type="range"]::-webkit-slider-thumb,
input[type="range"]::-moz-range-thumb,
.appearance-none {
-webkit-appearance: none;
-moz-appearance: none;
appearance: none;
}
</style>
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;--tw-backdrop-saturate: ;--tw-backdrop-sepia: ;--tw-contain-size: ;--tw-contain-layout: ;--tw-contain-paint: ;--tw-contain-style: }::backdrop{--tw-border-spacing-x:0;--tw-border-spacing-y:0;--tw-translate-x:0;--tw-translate-y:0;--tw-rotate:0;--tw-skew-x:0;--tw-skew-y:0;--tw-scale-x:1;--tw-scale-y:1;--tw-pan-x: ;--tw-pan-y: ;--tw-pinch-zoom: ;--tw-scroll-snap-strictness:proximity;--tw-gradient-from-position: ;--tw-gradient-via-position: ;--tw-gradient-to-position: ;--tw-ordinal: ;--tw-slashed-zero: ;--tw-numeric-figure: ;--tw-numeric-spacing: ;--tw-numeric-fraction: ;--tw-ring-inset: ;--tw-ring-offset-width:0px;--tw-ring-offset-color:#fff;--tw-ring-color:rgb(59 130 246 / 0.5);--tw-ring-offset-shadow:0 0 #0000;--tw-ring-shadow:0 0 #0000;--tw-shadow:0 0 #0000;--tw-shadow-colored:0 0 #0000;--tw-blur: ;--tw-brightness: ;--tw-contrast: ;--tw-grayscale: ;--tw-hue-rotate: ;--tw-invert: ;--tw-saturate: ;--tw-sepia: ;--tw-drop-shadow: ;--tw-backdrop-blur: ;--tw-backdrop-brightness: 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var(--tw-space-x-reverse)))}.rounded-full{border-radius:9999px}.rounded-lg{border-radius:0.5rem}.rounded-md{border-radius:0.375rem}.rounded-xl{border-radius:0.75rem}.border{border-width:1px}.border-2{border-width:2px}.border-gray-600{--tw-border-opacity:1;border-color:rgb(75 85 99 / var(--tw-border-opacity, 1))}.bg-blue-600{--tw-bg-opacity:1;background-color:rgb(37 99 235 / var(--tw-bg-opacity, 1))}.bg-gray-600{--tw-bg-opacity:1;background-color:rgb(75 85 99 / var(--tw-bg-opacity, 1))}.bg-gray-700{--tw-bg-opacity:1;background-color:rgb(55 65 81 / var(--tw-bg-opacity, 1))}.bg-gray-800{--tw-bg-opacity:1;background-color:rgb(31 41 55 / var(--tw-bg-opacity, 1))}.bg-gray-900{--tw-bg-opacity:1;background-color:rgb(17 24 39 / var(--tw-bg-opacity, 1))}.bg-green-600{--tw-bg-opacity:1;background-color:rgb(22 163 74 / var(--tw-bg-opacity, 1))}.bg-indigo-500{--tw-bg-opacity:1;background-color:rgb(99 102 241 / var(--tw-bg-opacity, 1))}.bg-red-600{--tw-bg-opacity:1;background-color:rgb(220 38 38 / var(--tw-bg-opacity, 1))}.bg-yellow-500{--tw-bg-opacity:1;background-color:rgb(234 179 8 / var(--tw-bg-opacity, 1))}.p-4{padding:1rem}.p-8{padding:2rem}.px-4{padding-left:1rem;padding-right:1rem}.px-7{padding-left:1.75rem;padding-right:1.75rem}.py-1{padding-top:0.25rem;padding-bottom:0.25rem}.py-2{padding-top:0.5rem;padding-bottom:0.5rem}.py-3{padding-top:0.75rem;padding-bottom:0.75rem}.text-left{text-align:left}.text-center{text-align:center}.text-3xl{font-size:1.875rem;line-height:2.25rem}.text-lg{font-size:1.125rem;line-height:1.75rem}.text-sm{font-size:0.875rem;line-height:1.25rem}.font-bold{font-weight:700}.font-semibold{font-weight:600}.text-gray-100{--tw-text-opacity:1;color:rgb(243 244 246 / var(--tw-text-opacity, 1))}.text-gray-200{--tw-text-opacity:1;color:rgb(229 231 235 / var(--tw-text-opacity, 1))}.text-gray-300{--tw-text-opacity:1;color:rgb(209 213 219 / var(--tw-text-opacity, 1))}.text-white{--tw-text-opacity:1;color:rgb(255 255 255 / var(--tw-text-opacity, 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<body class="bg-gray-900 flex items-center justify-center min-h-screen p-4">
<div class="w-full max-w-4xl bg-gray-800 rounded-xl shadow-2xl p-8">
<h1 class="text-3xl font-bold text-center text-gray-100 mb-8">Quick Censor</h1>
<!-- Controls -->
<div class="mb-8 flex flex-row items-center justify-center space-x-4">
<div class="relative inline-block text-left z-10">
<button id="uploadDropdownBtn" class="bg-blue-600 hover:bg-blue-700 text-white font-semibold py-3 px-7 rounded-full transition duration-300 ease-in-out shadow-lg transform hover:scale-105">
📁<span class="hidden sm:inline ml-2">Upload</span>
</button>
<div id="uploadDropdown" class="origin-top-left absolute left-0 mt-2 w-56 rounded-md shadow-lg bg-gray-700 ring-1 ring-gray-600 ring-opacity-5 hidden">
<div class="py-1" role="menu" aria-orientation="vertical" aria-labelledby="options-menu">
<label for="imageUpload" class="block px-4 py-2 text-sm text-gray-200 hover:bg-gray-600 cursor-pointer" role="menuitem">
Upload Image(s)
<input type="file" id="imageUpload" accept="image/*" multiple="" class="hidden">
</label>
<label for="gifUpload" class="block px-4 py-2 text-sm text-gray-200 hover:bg-gray-600 cursor-pointer" role="menuitem">
Upload GIF
<input type="file" id="gifUpload" accept="image/gif" class="hidden">
</label>
<label for="zipUpload" class="block px-4 py-2 text-sm text-gray-200 hover:bg-gray-600 cursor-pointer" role="menuitem">
Upload Zip
<input type="file" id="zipUpload" accept=".zip,application/zip,application/x-zip,application/x-zip-compressed" class="hidden">
</label>
</div>
</div>
</div>
<button id="clearCanvas" class="bg-red-600 hover:bg-red-700 text-white font-semibold py-3 px-7 rounded-full transition duration-300 ease-in-out shadow-lg transform hover:scale-105">
🗑️<span class="hidden sm:inline ml-2">Clear</span>
</button>
<button id="undoCensor" class="bg-yellow-500 hover:bg-yellow-600 text-white font-semibold py-3 px-7 rounded-full transition duration-300 ease-in-out shadow-lg transform hover:scale-105">
↶<span class="hidden sm:inline ml-2">Undo</span>
</button>
<div class="relative inline-block text-left z-10">
<button id="downloadDropdownBtn" class="bg-green-600 hover:bg-green-700 text-white font-semibold py-3 px-7 rounded-full transition duration-300 ease-in-out shadow-lg transform hover:scale-105">
💾<span class="hidden sm:inline ml-2">Download</span>
</button>
<div id="downloadDropdown" class="origin-top-right absolute right-0 mt-2 w-56 rounded-md shadow-lg bg-gray-700 ring-1 ring-gray-600 ring-opacity-5 hidden">
<div class="py-1" role="menu" aria-orientation="vertical" aria-labelledby="options-menu">
<button id="downloadCurrentImageBtn" class="block w-full text-left px-4 py-2 text-sm text-gray-200 hover:bg-gray-600" role="menuitem">
Download Current Image
</button>
<button id="downloadAllAsZipBtn" class="block w-full text-left px-4 py-2 text-sm text-gray-200 hover:bg-gray-600" role="menuitem">
Download All as ZIP
</button>
</div>
</div>
</div>
</div>
<!-- Canvas Container -->
<div class="canvas-container border-2 border-gray-600 mb-6">
<div id="drop-prompt" style="display: block;">
<p class="font-semibold">Drag & Drop, or Paste Image</p>
<p class="text-sm">You can also drop Zip/GIF files, or use the Upload button.</p>
</div>
<canvas id="displayCanvas"></canvas>
<canvas id="baseCanvas" style="display:none;"></canvas> <!-- Hidden canvas for base content -->
</div>
<!-- Image Navigation Slider -->
<div class="mb-6">
<label for="imageSlider" class="block text-gray-200 font-semibold mb-2">Image <span id="currentImageIndexDisplay">0</span> of <span id="totalImagesDisplay">0</span></label>
<input type="range" id="imageSlider" min="0" value="0" class="w-full h-2 bg-indigo-500 rounded-lg appearance-none cursor-pointer disabled:opacity-50" disabled="" max="0">
<div class="flex justify-center space-x-4 mt-3">
<button id="prevImageBtn" class="bg-gray-600 hover:bg-gray-500 text-white font-semibold py-2 px-4 rounded-lg transition duration-300 ease-in-out disabled:opacity-50 disabled:cursor-not-allowed" disabled="">
Previous
</button>
<button id="nextImageBtn" class="bg-gray-600 hover:bg-gray-500 text-white font-semibold py-2 px-4 rounded-lg transition duration-300 ease-in-out disabled:opacity-50 disabled:cursor-not-allowed" disabled="">
Next
</button>
</div>
</div>
<!-- Censor Area Size Sliders -->
<div class="grid grid-cols-1 md:grid-cols-2 gap-6 mb-6">
<div>
<label for="censorWidthSlider" class="block text-gray-200 font-semibold mb-2">Censor Width: <span id="censorWidthDisplay">20</span>px</label>
<input type="range" id="censorWidthSlider" min="10" max="500" value="20" class="w-full h-2 bg-indigo-500 rounded-lg appearance-none cursor-pointer">
</div>
<div>
<label for="censorHeightSlider" class="block text-gray-200 font-semibold mb-2">Censor Height: <span id="censorHeightDisplay">20</span>px</label>
<input type="range" id="censorHeightSlider" min="10" max="500" value="20" class="w-full h-2 bg-indigo-500 rounded-lg appearance-none cursor-pointer">
</div>
</div>
<!-- Mosaic Block Size Slider -->
<div class="mb-6">
<label for="mosaicBlockSizeSlider" class="block text-gray-200 font-semibold mb-2">Mosaic Block Size: <span id="mosaicBlockSizeDisplay">5</span>px</label>
<input type="range" id="mosaicBlockSizeSlider" min="4" max="100" value="5" class="w-full h-2 bg-indigo-500 rounded-lg appearance-none cursor-pointer">
</div>
<!-- Instructions -->
<div class="mt-6 bg-gray-700 border border-gray-600 rounded-lg p-4">
<h3 class="text-lg font-semibold text-gray-100 mb-3">Instructions</h3>
<div class="grid grid-cols-1 md:grid-cols-2 gap-3 text-sm text-gray-300">
<div class="flex items-start space-x-2">
<span class="font-semibold">Click/Tap:</span>
<span>Apply censor once and move to next frame</span>
</div>
<div class="flex items-start space-x-2">
<span class="font-semibold">Click + Drag:</span>
<span>Apply censor in the drawn area</span>
</div>
<div class="flex items-start space-x-2">
<span class="font-semibold">Hold Right Mouse:</span>
<span>Apply censor continuously (desktop)</span>
</div>
<div class="flex items-start space-x-2">
<span class="font-semibold">Touch (Mobile):</span>
<span>Apply censor without advancing frame</span>
</div>
<div class="flex items-start space-x-2">
<span class="font-semibold">Hold Ctrl:</span>
<span>Apply censor without moving to next frame</span>
</div>
<div class="flex items-start space-x-2">
<span class="font-semibold">Hover:</span>
<span>Preview censor area (desktop only)</span>
</div>
</div>
</div>
<!-- Message Area -->
<div id="message" class="mt-4 text-center text-gray-300 text-sm">Welcome! Upload images to begin.</div>
</div>
<script>
// Get canvas elements and their contexts
const displayCanvas = document.getElementById('displayCanvas');
const canvasContainer = displayCanvas.parentElement;
const dropPrompt = document.getElementById('drop-prompt');
const displayCtx = displayCanvas.getContext('2d');
const baseCanvas = document.getElementById('baseCanvas');
const baseCtx = baseCanvas.getContext('2d');
// Get control elements
const uploadDropdownBtn = document.getElementById('uploadDropdownBtn');
const uploadDropdown = document.getElementById('uploadDropdown');
const imageUploadInput = document.getElementById('imageUpload');
const gifUploadInput = document.getElementById('gifUpload');
const zipUploadInput = document.getElementById('zipUpload');
const clearCanvasBtn = document.getElementById('clearCanvas');
const undoCensorBtn = document.getElementById('undoCensor');
const imageSlider = document.getElementById('imageSlider');
const currentImageIndexDisplay = document.getElementById('currentImageIndexDisplay');
const totalImagesDisplay = document.getElementById('totalImagesDisplay');
const censorWidthSlider = document.getElementById('censorWidthSlider');
const censorWidthDisplay = document.getElementById('censorWidthDisplay');
const censorHeightSlider = document.getElementById('censorHeightSlider');
const censorHeightDisplay = document.getElementById('censorHeightDisplay');
const mosaicBlockSizeSlider = document.getElementById('mosaicBlockSizeSlider');
const mosaicBlockSizeDisplay = document.getElementById('mosaicBlockSizeDisplay');
const messageDiv = document.getElementById('message');
const downloadDropdownBtn = document.getElementById('downloadDropdownBtn');
const downloadDropdown = document.getElementById('downloadDropdown');
const downloadCurrentImageBtn = document.getElementById('downloadCurrentImageBtn');
const downloadAllAsZipBtn = document.getElementById('downloadAllAsZipBtn');
const prevImageBtn = document.getElementById('prevImageBtn');
const nextImageBtn = document.getElementById('nextImageBtn');
// --- State Variables ---
let processedImages = [];
let currentImageIndex = -1;
let draggingToCensor = false;
let lastX = 0, lastY = 0;
let censorAreaWidth = parseInt(censorWidthSlider.value);
let censorAreaHeight = parseInt(censorHeightSlider.value);
let currentMosaicBlockSize = parseInt(mosaicBlockSizeSlider.value);
let pixivMinimumBlockSize = 4;
let currentMouseX = -1, currentMouseY = -1;
let mouseOverCanvas = false;
// --- Mouse/Interaction State ---
let leftMouseDown = false;
let leftMouseInterval = null;
const leftMouseDelay = 500; // Delay for continuous censoring
// --- Zoom and Pan State ---
let transform = { panX: 0, panY: 0, zoom: 1.0 };
let isPanning = false;
let panStart = { x: 0, y: 0 };
// --- Utility Functions ---
function showMessage(msg) {
messageDiv.textContent = msg;
}
function resetTransform() {
transform.panX = 0;
transform.panY = 0;
transform.zoom = 1.0;
}
function resizeCanvas() {
renderCurrentImage();
}
/**
* Renders the current image, handling scaling for display and setting up
* the full-resolution base canvas.
*/
function renderCurrentImage() {
resetTransform(); // Reset zoom/pan on image change
baseCtx.clearRect(0, 0, baseCanvas.width, baseCanvas.height);
displayCtx.clearRect(0, 0, displayCanvas.width, displayCanvas.height);
if (currentImageIndex !== -1 && processedImages[currentImageIndex]) {
dropPrompt.style.display = 'none';
const imageData = processedImages[currentImageIndex].currentDataURL;
const img = new Image();
img.onload = () => {
// Set base canvas to full image resolution
baseCanvas.width = img.naturalWidth;
baseCanvas.height = img.naturalHeight;
baseCtx.drawImage(img, 0, 0);
// Scale display canvas to fit nicely in the container
const container = displayCanvas.parentElement;
const containerWidth = container.clientWidth;
const maxHeight = window.innerHeight * 0.85; // Increased for better viewing
const aspectRatio = img.naturalWidth / img.naturalHeight;
let targetWidth = containerWidth;
let targetHeight = containerWidth / aspectRatio;
if (targetHeight > maxHeight) {
targetHeight = maxHeight;
targetWidth = maxHeight * aspectRatio;
}
displayCanvas.width = targetWidth;
displayCanvas.height = targetHeight;
// Update sliders and warnings
pixivMinimumBlockSize = getPixivMinimumBlockSize();
mosaicBlockSizeSlider.min = 4;
// Update slider value and display to reflect the current setting
mosaicBlockSizeSlider.value = currentMosaicBlockSize;
mosaicBlockSizeDisplay.textContent = currentMosaicBlockSize;
// Check if we need to show Pixiv warning, but don't force the value to change
if (currentMosaicBlockSize < pixivMinimumBlockSize) {
showMessage(`Warning: Mosaic block size (${currentMosaicBlockSize}px) is below Pixiv's recommended minimum (${pixivMinimumBlockSize}px) for this image.`);
} else {
showMessage('Image loaded. Scroll to zoom, right-click drag to pan.');
}
copyBaseToDisplay(); // Initial render
};
img.onerror = () => showMessage('Error loading image data.');
img.src = imageData;
// Update UI elements
imageSlider.max = processedImages.length - 1;
imageSlider.value = currentImageIndex;
currentImageIndexDisplay.textContent = currentImageIndex + 1;
totalImagesDisplay.textContent = processedImages.length;
imageSlider.disabled = processedImages.length <= 1;
prevImageBtn.disabled = currentImageIndex <= 0;
nextImageBtn.disabled = currentImageIndex >= processedImages.length - 1;
} else {
// Clear everything if no image
currentImageIndexDisplay.textContent = 0;
totalImagesDisplay.textContent = 0;
imageSlider.max = 0;
imageSlider.value = 0;
imageSlider.disabled = true;
prevImageBtn.disabled = true;
nextImageBtn.disabled = true;
showMessage('Upload images to begin.');
dropPrompt.style.display = 'block';
}
}
/**
* Copies the full-res base canvas to the display canvas, applying zoom and pan.
*/
function copyBaseToDisplay() {
displayCtx.clearRect(0, 0, displayCanvas.width, displayCanvas.height);
displayCtx.save();
displayCtx.translate(transform.panX, transform.panY);
displayCtx.scale(transform.zoom, transform.zoom);
displayCtx.drawImage(baseCanvas, 0, 0, displayCanvas.width, displayCanvas.height);
displayCtx.restore();
if (mouseOverCanvas && !draggingToCensor && !isPanning) {
applyPreviewMosaic(currentMouseX, currentMouseY);
}
}
/**
* Converts coordinates from the display canvas (screen space) to the base canvas (image space).
*/
function displayToBaseCoords(displayX, displayY) {
const worldX = (displayX - transform.panX) / transform.zoom;
const worldY = (displayY - transform.panY) / transform.zoom;
const scaleX = baseCanvas.width / displayCanvas.width;
const scaleY = baseCanvas.height / displayCanvas.height;
return { x: worldX * scaleX, y: worldY * scaleY };
}
/**
* Applies a mosaic effect to a given ImageData object.
*/
function applyMosaic(imageData, blockSize) {
const data = imageData.data;
const width = imageData.width;
const height = imageData.height;
const intBlockSize = Math.max(1, Math.floor(blockSize));
for (let y = 0; y < height; y += intBlockSize) {
for (let x = 0; x < width; x += intBlockSize) {
const pixelIndex = (y * width + x) * 4;
const r = data[pixelIndex], g = data[pixelIndex + 1], b = data[pixelIndex + 2], a = data[pixelIndex + 3];
for (let by = 0; by < intBlockSize; by++) {
for (let bx = 0; bx < intBlockSize; bx++) {
if ((y + by) < height && (x + bx) < width) {
const currentPixelIndex = ((y + by) * width + (x + bx)) * 4;
data[currentPixelIndex] = r;
data[currentPixelIndex + 1] = g;
data[currentPixelIndex + 2] = b;
data[currentPixelIndex + 3] = a;
}
}
}
}
}
}
/**
* Applies a permanent mosaic to a rectangular area on the full-resolution base canvas.
*/
function applyPermanentMosaicToRect(startX, startY, endX, endY) {
if (currentImageIndex === -1 || baseCanvas.width === 0) return;
const baseStart = displayToBaseCoords(startX, startY);
const baseEnd = displayToBaseCoords(endX, endY);
const scale = baseCanvas.width / (displayCanvas.width * transform.zoom);
const scaledBlockSize = Math.max(1, Math.round(currentMosaicBlockSize * scale));
const snappedStartX = Math.floor(baseStart.x / scaledBlockSize) * scaledBlockSize;
const snappedStartY = Math.floor(baseStart.y / scaledBlockSize) * scaledBlockSize;
const widthToGet = baseEnd.x - snappedStartX;
const heightToGet = baseEnd.y - snappedStartY;
if (widthToGet > 0 && heightToGet > 0) {
try {
const imageData = baseCtx.getImageData(snappedStartX, snappedStartY, widthToGet, heightToGet);
applyMosaic(imageData, scaledBlockSize);
baseCtx.putImageData(imageData, snappedStartX, snappedStartY);
} catch (e) {
console.error("Error applying mosaic:", e);
}
}
}
function applyPermanentMosaic(x, y) {
const censorStartX = Math.max(0, x - censorAreaWidth / 2);
const censorStartY = Math.max(0, y - censorAreaHeight / 2);
const censorEndX = Math.min(displayCanvas.width, x + censorAreaWidth / 2);
const censorEndY = Math.min(displayCanvas.height, y + censorAreaHeight / 2);
applyPermanentMosaicToRect(censorStartX, censorStartY, censorEndX, censorEndY);
}
function applyPreviewMosaic(mouseX, mouseY) {
if (isPanning) return;
const censorStartX = Math.max(0, mouseX - censorAreaWidth / 2);
const censorStartY = Math.max(0, mouseY - censorAreaHeight / 2);
const censorEndX = Math.min(displayCanvas.width, mouseX + censorAreaWidth / 2);
const censorEndY = Math.min(displayCanvas.height, mouseY + censorAreaHeight / 2);
const snappedStartX = Math.floor(censorStartX / currentMosaicBlockSize) * currentMosaicBlockSize;
const snappedStartY = Math.floor(censorStartY / currentMosaicBlockSize) * currentMosaicBlockSize;
const widthToGet = censorEndX - snappedStartX;
const heightToGet = censorEndY - snappedStartY;
if (widthToGet > 0 && heightToGet > 0) {
const imageData = displayCtx.getImageData(snappedStartX, snappedStartY, widthToGet, heightToGet);
applyMosaic(imageData, currentMosaicBlockSize);
displayCtx.putImageData(imageData, snappedStartX, snappedStartY);
}
}
function getPixivMinimumBlockSize() {
const maxDim = Math.max(displayCanvas.width, displayCanvas.height);
return maxDim > 400 ? Math.ceil(maxDim / 100) : 4;
}
function advanceToNextImage() {
if (currentImageIndex >= processedImages.length - 1) {
showMessage('Reached the last image.');
return false;
}
currentImageIndex++;
renderCurrentImage();
return true;
}
function applyMosaicAndAdvance(x, y, shouldAdvance = true) {
applyPermanentMosaic(x, y);
processedImages[currentImageIndex].currentDataURL = baseCanvas.toDataURL();
if (shouldAdvance) {
const advanced = advanceToNextImage();
if (advanced) {
showMessage('Mosaic applied! Moving to next image...');
} else {
showMessage('Mosaic applied! All images processed.');
}
return advanced;
} else {
showMessage('Mosaic applied! (Ctrl held - staying on current frame)');
copyBaseToDisplay();
return true;
}
}
// --- File Handlers ---
function handleDroppedFiles(files) {
if (files.length === 1) {
const file = files[0];
if (file.type === 'image/gif') handleGifFile(file);
else if (file.type.startsWith('application/zip') || file.name.endsWith('.zip')) handleZipFile(file);
else if (file.type.startsWith('image/')) handleImageFiles([file]);
else showMessage('Unsupported file type dropped.');
} else {
const imageFiles = Array.from(files).filter(f => f.type.startsWith('image/'));
if (imageFiles.length > 0) handleImageFiles(imageFiles);
else showMessage('No supported image files found in drop.');
}
}
function handleImageFiles(files) {
const sortedFiles = Array.from(files).sort((a, b) => a.name.localeCompare(b.name));
processedImages = [];
currentImageIndex = -1;
showMessage('Loading images...');
const filePromises = sortedFiles.map(file => new Promise((resolve, reject) => {
const reader = new FileReader();
reader.onload = e => resolve({ originalDataURL: e.target.result, currentDataURL: e.target.result });
reader.onerror = reject;
reader.readAsDataURL(file);
}));
Promise.all(filePromises).then(newImages => {
processedImages = newImages;
currentImageIndex = 0;
renderCurrentImage();
showMessage(`Loaded ${newImages.length} image(s).`);
}).catch(error => {
showMessage('Error loading images.');
console.error(error);
});
}
function handleGifFile(file) {
processedImages = [];
currentImageIndex = -1;
showMessage('Extracting frames from GIF...');
const objectURL = URL.createObjectURL(file);
gifFrames({ url: objectURL, frames: 'all', outputType: 'canvas', cumulative: true })
.then(frameData => Promise.all(frameData.map(frame => {
const frameCanvas = frame.getImage();
const dataURL = frameCanvas.toDataURL();
return { originalDataURL: dataURL, currentDataURL: dataURL };
})))
.then(newImages => {
processedImages = newImages;
currentImageIndex = 0;
renderCurrentImage();
showMessage(`Extracted ${newImages.length} frames from GIF.`);
}).catch(error => {
showMessage('Error processing GIF.');
console.error(error);
}).finally(() => URL.revokeObjectURL(objectURL));
}
async function handleZipFile(file) {
processedImages = [];
currentImageIndex = -1;
showMessage('Unzipping and loading images...');
try {
const zip = await JSZip.loadAsync(file);
const imageFiles = [];
zip.forEach((_, zipEntry) => {
if (!zipEntry.dir && /\.(jpe?g|png|gif)$/i.test(zipEntry.name)) {
imageFiles.push(zipEntry);
}
});
imageFiles.sort((a, b) => a.name.localeCompare(b.name));
const loadedImages = await Promise.all(imageFiles.map(zipEntry =>
zipEntry.async('base64').then(base64 => {
const mimeType = `image/${zipEntry.name.split('.').pop().toLowerCase()}`;
const dataUrl = `data:${mimeType};base64,${base64}`;
return { originalDataURL: dataUrl, currentDataURL: dataUrl };
})
));
if (loadedImages.length > 0) {
processedImages = loadedImages;
currentImageIndex = 0;
renderCurrentImage();
showMessage(`Loaded ${loadedImages.length} image(s) from ZIP.`);
} else {
showMessage('No valid images found in ZIP.');
}
} catch (error) {
showMessage('Error reading ZIP file.');
console.error(error);
}
}
// --- Event Listeners ---
// Dropdowns and Uploads
uploadDropdownBtn.addEventListener('click', () => uploadDropdown.classList.toggle('hidden'));
downloadDropdownBtn.addEventListener('click', () => downloadDropdown.classList.toggle('hidden'));
window.addEventListener('click', (event) => {
if (!uploadDropdownBtn.contains(event.target) && !uploadDropdown.contains(event.target)) uploadDropdown.classList.add('hidden');
if (downloadDropdownBtn && !downloadDropdownBtn.contains(event.target) && !downloadDropdown.contains(event.target)) downloadDropdown.classList.add('hidden');
});
imageUploadInput.addEventListener('change', (e) => handleImageFiles(e.target.files));
gifUploadInput.addEventListener('change', (e) => handleGifFile(e.target.files[0]));
zipUploadInput.addEventListener('change', (e) => handleZipFile(e.target.files[0]));
// Main Controls
clearCanvasBtn.addEventListener('click', () => {
processedImages = [];
currentImageIndex = -1;
imageUploadInput.value = gifUploadInput.value = zipUploadInput.value = '';
renderCurrentImage();
showMessage('All content cleared.');
});
undoCensorBtn.addEventListener('click', () => {
if (currentImageIndex === -1) return;
processedImages[currentImageIndex].currentDataURL = processedImages[currentImageIndex].originalDataURL;
renderCurrentImage();
showMessage('Current image reverted to original.');
});
// Navigation
imageSlider.addEventListener('input', (e) => {
currentImageIndex = parseInt(e.target.value);
renderCurrentImage();
});
prevImageBtn.addEventListener('click', () => {
if (currentImageIndex > 0) {
currentImageIndex--;
renderCurrentImage();
}
});
nextImageBtn.addEventListener('click', () => {
if (currentImageIndex < processedImages.length - 1) {
currentImageIndex++;
renderCurrentImage();
}
});
// Sliders
censorWidthSlider.addEventListener('input', (e) => {
censorAreaWidth = parseInt(e.target.value);
censorWidthDisplay.textContent = censorAreaWidth;
});
censorHeightSlider.addEventListener('input', (e) => {
censorAreaHeight = parseInt(e.target.value);
censorHeightDisplay.textContent = censorAreaHeight;
});
mosaicBlockSizeSlider.addEventListener('input', (e) => {
currentMosaicBlockSize = parseInt(e.target.value);
mosaicBlockSizeDisplay.textContent = currentMosaicBlockSize;
});
// --- Canvas Interaction: Drag/Drop, Zoom, Pan, Censor ---
function getEventCoordinates(e) {
const rect = displayCanvas.getBoundingClientRect();
const touch = e.touches && e.touches[0];
return {
x: (touch || e).clientX - rect.left,
y: (touch || e).clientY - rect.top
};
}
// Drag and Drop
canvasContainer.addEventListener('dragover', e => {
e.preventDefault();
canvasContainer.classList.add('border-blue-500');
});
canvasContainer.addEventListener('dragleave', e => {
e.preventDefault();
canvasContainer.classList.remove('border-blue-500');
});
canvasContainer.addEventListener('drop', e => {
e.preventDefault();
canvasContainer.classList.remove('border-blue-500');
if (e.dataTransfer.files.length > 0) {
handleDroppedFiles(e.dataTransfer.files);
}
});
// Zoom with Scroll Wheel
canvasContainer.addEventListener('wheel', e => {
if (currentImageIndex === -1) return;
e.preventDefault();
const coords = getEventCoordinates(e);
const worldX = (coords.x - transform.panX) / transform.zoom;
const worldY = (coords.y - transform.panY) / transform.zoom;
const zoomFactor = e.deltaY < 0 ? 1.1 : 1 / 1.1;
const newZoom = Math.max(0.1, transform.zoom * zoomFactor);
transform.panX = coords.x - worldX * newZoom;
transform.panY = coords.y - worldY * newZoom;
transform.zoom = newZoom;
copyBaseToDisplay();
}, { passive: false });
// Mouse/Touch Handlers
displayCanvas.addEventListener('mousedown', e => {
if (currentImageIndex === -1) return;
const coords = getEventCoordinates(e);
if (e.button === 0) { // Left-click for censoring
e.preventDefault();
leftMouseDown = true;
lastX = coords.x;
lastY = coords.y;
// Apply first mosaic immediately on click
applyPermanentMosaic(coords.x, coords.y);
copyBaseToDisplay();
// Start a timer. If the mouse is still down after the delay and not dragging, start continuous censoring.
leftMouseInterval = setTimeout(() => {
if (leftMouseDown && !draggingToCensor) {
const continuousCensor = () => {
if (!leftMouseDown) {
clearTimeout(leftMouseInterval);
leftMouseInterval = null;
return;
}
const mosaicX = currentMouseX >= 0 ? currentMouseX : displayCanvas.width / 2;
const mosaicY = currentMouseY >= 0 ? currentMouseY : displayCanvas.height / 2;
const stillAdvancing = applyMosaicAndAdvance(mosaicX, mosaicY, !e.ctrlKey);
if (stillAdvancing) {
leftMouseInterval = setTimeout(continuousCensor, leftMouseDelay);
} else {
leftMouseDown = false;
}
};
continuousCensor();
}
}, 300); // A short delay to distinguish a click/drag from a hold
} else if (e.button === 2) { // Right-click for panning
e.preventDefault();
isPanning = true;
panStart.x = e.clientX - transform.panX;
panStart.y = e.clientY - transform.panY;
displayCanvas.style.cursor = 'grabbing';
}
});
displayCanvas.addEventListener('mousemove', e => {
const coords = getEventCoordinates(e);
currentMouseX = coords.x;
currentMouseY = coords.y;
if (leftMouseDown) {
// If we move, it's a drag. Cancel the continuous censor timer.
if (Math.abs(coords.x - lastX) > 5 || Math.abs(coords.y - lastY) > 5) {
clearTimeout(leftMouseInterval);
leftMouseInterval = null;
draggingToCensor = true;
}
}
if (isPanning) {
transform.panX = e.clientX - panStart.x;
transform.panY = e.clientY - panStart.y;
copyBaseToDisplay();
} else if (draggingToCensor) {
// This is the corrected drag logic
const minX = Math.min(lastX, currentMouseX);
const minY = Math.min(lastY, currentMouseY);
const maxX = Math.max(lastX, currentMouseX);
const maxY = Math.max(lastY, currentMouseY);
applyPermanentMosaicToRect(minX - censorAreaWidth / 2, minY - censorAreaHeight / 2, maxX + censorAreaWidth / 2, maxY + censorAreaHeight / 2);
lastX = currentMouseX;
lastY = currentMouseY;
copyBaseToDisplay();
} else {
copyBaseToDisplay(); // For preview
}
});
window.addEventListener('mouseup', e => {
if (e.button === 0) { // Left mouse button released
clearTimeout(leftMouseInterval); // Clear any pending continuous censor
leftMouseInterval = null;
if (draggingToCensor) {
// If we were dragging, save the final result
processedImages[currentImageIndex].currentDataURL = baseCanvas.toDataURL();
showMessage('Censoring saved!');
} else if(leftMouseDown) {
// If it was just a click (no drag, no hold), advance the image
const shouldAdvance = !e.ctrlKey;
if (shouldAdvance) {
advanceToNextImage();
}
}
leftMouseDown = false;
draggingToCensor = false;
}
if (e.button === 2) { // Right mouse button released
if (isPanning) {
isPanning = false;
displayCanvas.style.cursor = 'default';
}
}
});
displayCanvas.addEventListener('mouseenter', () => mouseOverCanvas = true);
displayCanvas.addEventListener('mouseout', () => {
mouseOverCanvas = false;
copyBaseToDisplay(); // Remove preview
});
displayCanvas.addEventListener('contextmenu', e => e.preventDefault());
// --- Initialization and Global Listeners ---
window.addEventListener('load', resizeCanvas);
window.addEventListener('resize', resizeCanvas);
window.addEventListener('paste', (e) => {
const items = (e.clipboardData || e.originalEvent.clipboardData).items;
for (let i = 0; i < items.length; i++) {
if (items[i].type.indexOf('image') !== -1) {
handleImageFiles([items[i].getAsFile()]);
break;
}
}
});
// --- Download Logic ---
downloadCurrentImageBtn.addEventListener('click', () => {
if (currentImageIndex === -1) return;
downloadDropdown.classList.add('hidden');
const link = document.createElement('a');
link.href = processedImages[currentImageIndex].currentDataURL;
link.download = `image_${currentImageIndex + 1}.png`;
link.click();
showMessage('Current image download started.');
});
downloadAllAsZipBtn.addEventListener('click', async () => {
if (processedImages.length === 0) return;
downloadDropdown.classList.add('hidden');
showMessage('Zipping images...');
const zip = new JSZip();
const dataURLtoBlob = (dataurl) => {
const arr = dataurl.split(','), mime = arr[0].match(/:(.*?);/)[1], bstr = atob(arr[1]);
let n = bstr.length;
const u8arr = new Uint8Array(n);
while (n--) u8arr[n] = bstr.charCodeAt(n);
return new Blob([u8arr], { type: mime });
};
processedImages.forEach((imgData, index) => {
const blob = dataURLtoBlob(imgData.currentDataURL);
if (blob) zip.file(`image_${index + 1}.png`, blob);
});
try {
const content = await zip.generateAsync({ type: 'blob' });
const link = document.createElement('a');
link.href = URL.createObjectURL(content);
link.download = 'censored_images.zip';
link.click();
showMessage('ZIP download started.');
} catch (e) {
showMessage('Error creating ZIP file.');
console.error(e);
}
});
</script>
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