Overhauls Danbooru's default gallery view with a sleek, responsive justified grid layout. Includes high-res thumbnails, hover previews, overlay actions, and more.
// ==UserScript==
// @name Danbooru Enchanced Gallery
// @namespace https://github.com/yourusername/danbooru-justified-gallery
// @version 1.53
// @description Overhauls Danbooru's default gallery view with a sleek, responsive justified grid layout. Includes high-res thumbnails, hover previews, overlay actions, and more.
// @author Claude Sonnet 4 (prompted by orx_ibx)
// @match https://danbooru.donmai.us/
// @match https://danbooru.donmai.us/posts*
// @match https://danbooru.donmai.us/?tags=*
// @grant none
// @require https://cdnjs.cloudflare.com/ajax/libs/justifiedGallery/3.8.1/js/jquery.justifiedGallery.min.js
// @resource https://cdnjs.cloudflare.com/ajax/libs/justifiedGallery/3.8.1/css/justifiedGallery.min.css
// @license MIT (https://opensource.org/licenses/MIT)
// ==/UserScript==
(function () {
"use strict";
// Config for added features
const CONFIG = {
// toggle features
enableHoverPreview: true,
enableHighRes: true,
enableRelocateSearchBar: true,
enableHiddenSidebar: true,
// High rez thumbnail loader config
viewportBuffer: 600, // pixels below viewport to start loading HR thumbs
maxRetries: 0, // retry attempts for failed HR loads
batchSize: 5, // num of HR thumbnails to load at once
batchDelay: 0, // delay between each HR batch load
enableScrollPause: true,
scrollThrottleDelay: 0, // Add this line (ms to wait after scroll stops)
// Hover preview config
hoverDelay: 300, // ms delay before showing preview
};
// Config for Justified Gallery
const JG_CONFIG = {
rowHeight: 160,
maxRowHeight: 720,
lastRow: "nojustify",
margins: 8,
border: 0,
captions: true,
randomize: false,
waitThumbnailsLoad: true,
cssAnimation: false,
imagesAnimationDuration: 300,
captionSettings: {
animationDuration: 50,
visibleOpacity: 0.5,
nonVisibleOpacity: 0.0,
},
};
// Elements that trigger a Justified Gallery reset when clicked
// Add CSS selectors for any buttons or toggles that should reset JG on interaction
const JG_RESET_SELECTORS = ["#jg-reload-btn"];
class ImageManager {
constructor() {
this.urlCache = new Map();
this.loadingCache = new Set();
this.abortController = null;
this.batchQueue = [];
this.processingBatch = false;
this.currentPreview = null;
this.hoverContainer = null;
this.previewAbortController = null;
this.isScrolling = false; // Add this line
this.scrollTimeout = null; // Add this line
this.activeLoaders = new Map(); // Add this line (track active image loaders)
if (CONFIG.enableHoverPreview) this.createHoverContainer();
if (CONFIG.enableScrollPause) this.setupScrollDetection();
}
// Get the current zoom level
getZoomLevel() {
return window.devicePixelRatio || 1;
}
// Get zoom-independent dimensions
getZoomIndependentDimensions() {
const zoom = this.getZoomLevel();
return {
windowWidth: window.innerWidth * zoom,
windowHeight: window.innerHeight * zoom,
maxWidth: window.innerWidth * 0.95 * zoom,
maxHeight: window.innerHeight * 0.95 * zoom,
};
}
createHoverContainer() {
this.hoverContainer = document.createElement("div");
this.hoverContainer.id = "danbooru-hover-preview";
document.body.appendChild(this.hoverContainer);
}
showPreview(imageUrl, mouseEvent) {
if (!imageUrl || !this.hoverContainer) return;
const img = document.createElement("img");
img.src = imageUrl;
img.onerror = () => {
this.hidePreview();
};
// Apply zoom compensation when image loads
img.onload = () => {
this.applyZoomCompensation(img);
// Reposition after zoom compensation is applied
this.positionPreview(mouseEvent);
};
this.hoverContainer.innerHTML = "";
this.hoverContainer.appendChild(img);
// Position the preview
this.positionPreview(mouseEvent);
// Show with fade-in effect
this.hoverContainer.classList.add("visible");
this.currentPreview = img;
}
applyZoomCompensation(img) {
const zoom = this.getZoomLevel();
const zoomIndependent = this.getZoomIndependentDimensions();
// Calculate the scale factor to counteract zoom
const scaleCompensation = 1 / zoom;
// Get natural image dimensions
const naturalWidth = img.naturalWidth;
const naturalHeight = img.naturalHeight;
// Calculate how much we need to scale down to fit in viewport
const widthScale = zoomIndependent.maxWidth / naturalWidth;
const heightScale = zoomIndependent.maxHeight / naturalHeight;
const fitScale = Math.min(widthScale, heightScale, 1); // Don't scale up
// Apply both zoom compensation and fit scaling
const finalScale = scaleCompensation * fitScale;
// Set the transform to counteract zoom and fit to screen
img.style.transform = `scale(${finalScale})`;
img.style.transformOrigin = "top left";
// Set dimensions based on the scaled size
img.style.width = `${naturalWidth}px`;
img.style.height = `${naturalHeight}px`;
// Update the container to match the effective size
this.hoverContainer.style.width = `${naturalWidth * finalScale}px`;
this.hoverContainer.style.height = `${
naturalHeight * finalScale
}px`;
}
positionPreview(mouseEvent) {
if (!this.hoverContainer) return;
const zoom = this.getZoomLevel();
const { clientX: mouseX, clientY: mouseY } = mouseEvent;
const zoomIndependent = this.getZoomIndependentDimensions();
// Adjust mouse coordinates for zoom
const adjustedMouseX = mouseX * zoom;
const adjustedMouseY = mouseY * zoom;
// Temporarily position at mouse location to get accurate dimensions
this.hoverContainer.style.left = `${adjustedMouseX / zoom}px`;
this.hoverContainer.style.top = `${adjustedMouseY / zoom}px`;
this.hoverContainer.style.visibility = "hidden";
this.hoverContainer.style.display = "block";
// Force layout recalculation
this.hoverContainer.offsetHeight;
// Get the effective size of the container
const containerWidth =
parseFloat(this.hoverContainer.style.width) ||
this.hoverContainer.offsetWidth;
const containerHeight =
parseFloat(this.hoverContainer.style.height) ||
this.hoverContainer.offsetHeight;
// Calculate position in zoom-adjusted coordinates
let left = (adjustedMouseX + 15) / zoom;
let top = (adjustedMouseY + 15) / zoom;
// Check boundaries and adjust
if (
left * zoom + containerWidth * zoom >
zoomIndependent.windowWidth
) {
left = (adjustedMouseX - containerWidth * zoom - 15) / zoom;
}
if (
top * zoom + containerHeight * zoom >
zoomIndependent.windowHeight
) {
top = (adjustedMouseY - containerHeight * zoom - 15) / zoom;
}
// Ensure preview stays within viewport
left = Math.max(
10 / zoom,
Math.min(
left,
(zoomIndependent.windowWidth - containerWidth * zoom - 10) /
zoom
)
);
top = Math.max(
10 / zoom,
Math.min(
top,
(zoomIndependent.windowHeight -
containerHeight * zoom -
10) /
zoom
)
);
// Apply final position and make visible
this.hoverContainer.style.left = `${left}px`;
this.hoverContainer.style.top = `${top}px`;
this.hoverContainer.style.visibility = "visible";
}
hidePreview() {
if (!this.hoverContainer) return;
this.hoverContainer.classList.remove("visible");
this.currentPreview = null;
// Cancel any pending preview request
if (this.previewAbortController) {
this.previewAbortController.abort();
this.previewAbortController = null;
}
// Clear content after fade-out
setTimeout(() => {
this.hoverContainer.innerHTML = "";
// Reset container dimensions
this.hoverContainer.style.width = "";
this.hoverContainer.style.height = "";
}, 200);
}
async fetchImageUrlForPreview(postId) {
if (this.urlCache.has(postId)) {
return this.urlCache.get(postId);
}
try {
// Cancel any previous preview request
if (this.previewAbortController) {
this.previewAbortController.abort();
}
this.previewAbortController = new AbortController();
const response = await fetch(
`https://danbooru.donmai.us/posts/${postId}.json`,
{
signal: this.previewAbortController.signal,
}
);
if (!response.ok) {
throw new Error(
`HTTP ${response.status}: ${response.statusText}`
);
}
const data = await response.json();
const imageUrl = data.large_file_url || data.file_url;
if (imageUrl) {
this.urlCache.set(postId, imageUrl);
return imageUrl;
}
throw new Error("No image URL found in response");
} catch (error) {
if (error.name === "AbortError") {
return null; // Request was cancelled
}
// console.warn(
// `Failed to fetch preview image for post ${postId}:`,
// error
// );
return null;
}
}
// Add to ImageManager class
setupScrollDetection() {
const handleScroll = () => {
this.isScrolling = true;
// Clear existing timeout
if (this.scrollTimeout) {
clearTimeout(this.scrollTimeout);
}
// Set new timeout
this.scrollTimeout = setTimeout(() => {
this.isScrolling = false;
// Resume batch processing if queue has items
if (this.batchQueue.length > 0) {
this.processBatch();
}
}, CONFIG.scrollThrottleDelay);
};
window.addEventListener("scroll", handleScroll, { passive: true });
window.addEventListener("wheel", handleScroll, { passive: true });
window.addEventListener("touchmove", handleScroll, {
passive: true,
});
}
// Add this method to the class
async processBatch() {
if (this.processingBatch || this.batchQueue.length === 0) return;
// Skip processing if scrolling and scroll pause is enabled
if (CONFIG.enableScrollPause && this.isScrolling) return;
this.processingBatch = true;
const batch = this.batchQueue.splice(0, CONFIG.batchSize);
await Promise.all(
batch.map(({ img, postId }) =>
loadHighResImage(img, postId, this)
)
);
this.processingBatch = false;
// Process next batch if queue isn't empty and not scrolling
if (
this.batchQueue.length > 0 &&
(!CONFIG.enableScrollPause || !this.isScrolling)
) {
setTimeout(() => this.processBatch(), CONFIG.batchDelay);
}
}
abortImageLoading(postId) {
if (this.activeLoaders.has(postId)) {
const controller = this.activeLoaders.get(postId);
controller.abort();
this.activeLoaders.delete(postId);
this.loadingCache.delete(postId);
}
}
async fetchImageUrl(postId) {
if (this.urlCache.has(postId)) {
return this.urlCache.get(postId);
}
if (this.loadingCache.has(postId)) {
return null; // Already loading
}
this.loadingCache.add(postId);
try {
// Create controller for this specific request
const controller = new AbortController();
this.activeLoaders.set(postId, controller);
const response = await fetch(
`https://danbooru.donmai.us/posts/${postId}.json`,
{ signal: controller.signal }
);
if (!response.ok) {
throw new Error(
`HTTP ${response.status}: ${response.statusText}`
);
}
const data = await response.json();
const imageUrl = data.large_file_url || data.file_url;
if (imageUrl) {
this.urlCache.set(postId, imageUrl);
return imageUrl;
}
throw new Error("No image URL found in response");
} catch (error) {
// if (error.name === "AbortError") {
// return null; // Request was cancelled
// }
// console.warn(
// `Failed to fetch image for post ${postId}:`,
// error
// );
// return null;
} finally {
this.loadingCache.delete(postId);
this.activeLoaders.delete(postId);
}
}
}
function createIntersectionObserver(imageManager) {
const observer = new IntersectionObserver(
(entries) => {
entries.forEach((entry) => {
const img = entry.target;
const link = img.closest("a");
if (entry.isIntersecting) {
// Image entered viewport
if (link && !img.dataset.highResLoaded) {
const postId = extractPostIdFromUrl(link.href);
if (postId) {
// Remove from queue if it was there (in case it was added before)
imageManager.batchQueue =
imageManager.batchQueue.filter(
(item) => item.postId !== postId
);
// Add to batch queue
imageManager.batchQueue.push({ img, postId });
imageManager.processBatch();
}
}
} else {
// Image left viewport - abort loading if in progress
if (link) {
const postId = extractPostIdFromUrl(link.href);
if (postId) {
// Remove from queue if it's there
imageManager.batchQueue =
imageManager.batchQueue.filter(
(item) => item.postId !== postId
);
// Abort active loading
imageManager.abortImageLoading(postId);
}
}
}
});
},
{
// rootMargin: `${CONFIG.viewportBuffer}px`, // preload all side
rootMargin: `0px 0px ${CONFIG.viewportBuffer}px 0px`, // preload only bottom
threshold: 0.1,
}
);
return observer;
}
function extractPostIdFromUrl(url) {
const match = url.match(/\/posts\/(\d+)/);
return match ? match[1] : null;
}
async function loadHighResImage(img, postId, imageManager) {
if (
img.dataset.highResLoaded === "true" ||
img.dataset.highResLoading === "true"
) {
return;
}
img.dataset.highResLoading = "true";
try {
const highResUrl = await imageManager.fetchImageUrl(postId);
if (highResUrl && highResUrl !== img.src) {
await replaceImageSrc(img, highResUrl);
img.dataset.highResLoaded = "true";
}
} catch (error) {
// console.warn(
// `Failed to load high-res image for post ${postId}:`,
// error
// );
} finally {
img.dataset.highResLoading = "false";
}
}
function replaceImageSrc(img, newSrc) {
return new Promise((resolve, reject) => {
const tempImg = new Image();
tempImg.onload = () => {
// Store original dimensions to maintain layout
const originalWidth = img.offsetWidth;
const originalHeight = img.offsetHeight;
img.src = newSrc;
// Ensure size doesn't change
img.style.width = originalWidth + "px";
img.style.height = originalHeight + "px";
img.style.objectFit = "cover";
resolve();
};
tempImg.onerror = () => {
reject(new Error("Failed to load high-res image"));
};
tempImg.src = newSrc;
});
}
function cleanup() {
const justifiedContainer = document.getElementById(
"justified-gallery-container"
);
if (justifiedContainer) {
// Disconnect observer
if (justifiedContainer.intersectionObserver) {
justifiedContainer.intersectionObserver.disconnect();
}
// Clear caches
if (justifiedContainer.imageManager) {
// Abort all active loaders
justifiedContainer.imageManager.activeLoaders.forEach(
(controller, postId) => {
controller.abort();
}
);
justifiedContainer.imageManager.urlCache.clear();
justifiedContainer.imageManager.loadingCache.clear();
justifiedContainer.imageManager.batchQueue = [];
justifiedContainer.imageManager.processingBatch = false;
justifiedContainer.imageManager.activeLoaders.clear();
// Clear scroll timeout
if (justifiedContainer.imageManager.scrollTimeout) {
clearTimeout(justifiedContainer.imageManager.scrollTimeout);
}
// Clean up hover preview
if (justifiedContainer.imageManager.hoverContainer) {
justifiedContainer.imageManager.hidePreview();
justifiedContainer.imageManager.hoverContainer.remove();
}
if (justifiedContainer.imageManager.previewAbortController) {
justifiedContainer.imageManager.previewAbortController.abort();
}
}
const existingButton = document.getElementById(
"preview-toggle-button"
);
if (existingButton) {
existingButton.remove();
}
// Remove toggle button
if (justifiedContainer.toggleButton) {
justifiedContainer.toggleButton.remove();
}
// Destroy the justified gallery instance
$(justifiedContainer).justifiedGallery("destroy");
// Remove the container entirely
justifiedContainer.remove();
// Also remove any stray toggle button
}
}
// Separate event handler function
async function handleCaptionClick(e) {
e.preventDefault();
// Prevent multiple clicks
if (e.target.classList.contains("processing")) return;
const isFavBtn = e.target.classList.contains("favorite-btn");
const isFavorited = e.target.classList.contains("favorited");
const isUpvBtn = e.target.classList.contains("upvote-btn");
const isUpvoted = e.target.classList.contains("upvoted");
const csrfToken = document
.querySelector('meta[name="csrf-token"]')
?.getAttribute("content");
if (!csrfToken) {
console.warn("CSRF token not found");
return;
}
if (isUpvBtn) {
e.preventDefault();
e.stopPropagation();
const postId = e.target.getAttribute("data-post-id");
const scoreElement = e.target.nextElementSibling;
// Prevent multiple clicks
e.target.classList.add("processing");
try {
const rMethod = !isUpvoted ? "POST" : "DELETE";
const rURL = `/posts/${postId}/votes`;
const response = await fetch(rURL, {
method: rMethod,
headers: {
"Content-Type": "application/json",
"X-CSRF-Token": csrfToken,
"X-Requested-With": "XMLHttpRequest",
},
body: JSON.stringify({ score: 1 }),
});
if (response.ok) {
// Only increment by 1, don't use server response
let currentScore = parseInt(scoreElement.textContent) || 0;
if (!isUpvoted) {
e.target.classList.add("upvoted");
scoreElement.textContent = currentScore + 1;
if (
scoreElement.classList.contains("neutral") &&
parseInt(scoreElement.textContent) > 0
) {
scoreElement.classList.remove("neutral");
scoreElement.classList.add("positive");
}
e.target.classList.add("active");
} else {
e.target.classList.remove("upvoted");
scoreElement.textContent = currentScore - 1;
if (
scoreElement.classList.contains("positive") &&
parseInt(scoreElement.textContent) === 0
) {
scoreElement.classList.remove("positive");
scoreElement.classList.add("neutral");
}
e.target.classList.remove("active");
}
}
} catch (error) {
console.error("Error voting:", error);
} finally {
e.target.classList.remove("processing");
}
}
// FAVORITE BUTTON
if (isFavBtn) {
e.preventDefault();
e.stopPropagation();
const postId = e.target.getAttribute("data-post-id");
// Prevent multiple clicks
e.target.classList.add("processing");
try {
const rMethod = !isFavorited ? "POST" : "DELETE";
const rURL = !isFavorited
? "/favorites.json"
: `/favorites/${postId}.json`;
const response = await fetch(rURL, {
method: rMethod,
headers: {
"Content-Type": "application/json",
"X-CSRF-Token": csrfToken,
"X-Requested-With": "XMLHttpRequest",
},
body: JSON.stringify({ post_id: postId }),
});
if (response.ok) {
if (!isFavorited) {
e.target.classList.add("active");
e.target.classList.add("favorited");
} else {
e.target.classList.remove("active");
e.target.classList.remove("favorited");
}
}
} catch (error) {
console.error("Error favoriting:", error);
} finally {
e.target.classList.remove("processing");
}
}
}
function addHoverListeners(img, imageManager) {
if (!CONFIG.enableHoverPreview) return;
const link = img.closest("a");
if (!link) return;
const postId = extractPostIdFromUrl(link.href);
if (!postId) return;
let previewTimeout;
const handleMouseEnter = async (event) => {
clearTimeout(previewTimeout);
previewTimeout = setTimeout(async () => {
const imageUrl = await imageManager.fetchImageUrlForPreview(
postId
);
if (imageUrl && !imageManager.currentPreview) {
imageManager.showPreview(imageUrl, event);
}
}, CONFIG.hoverDelay);
};
const handleMouseLeave = () => {
clearTimeout(previewTimeout);
imageManager.hidePreview();
};
const handleMouseMove = (event) => {
if (imageManager.currentPreview) {
imageManager.positionPreview(event);
}
};
img.addEventListener("mouseenter", handleMouseEnter);
img.addEventListener("mouseleave", handleMouseLeave);
img.addEventListener("mousemove", handleMouseMove);
}
function createToggleButton(imageManager) {
const button = document.createElement("button");
button.id = "preview-toggle-button";
button.textContent = CONFIG.enableHoverPreview
? "Preview: ON"
: "Preview: OFF";
if (!CONFIG.enableHoverPreview) button.classList.add("disabled");
button.addEventListener("click", () => {
CONFIG.enableHoverPreview = !CONFIG.enableHoverPreview;
button.textContent = CONFIG.enableHoverPreview
? "Preview: ON"
: "Preview: OFF";
if (
!CONFIG.enableHoverPreview &&
!button.classList.contains("disabled")
)
button.classList.add("disabled");
else button.classList.remove("disabled");
if (!CONFIG.enableHoverPreview) {
// Hide any current preview
imageManager.hidePreview();
}
// Update all existing images with/without hover listeners
updateHoverListeners(imageManager);
});
// document.body.appendChild(button);
// Insert after the show-posts-link element
const postsSection = document.querySelector("#post-sections li");
if (postsSection) {
postsSection.appendChild(button);
} else {
// Fallback to body if show-posts-link not found
document.body.appendChild(button);
}
return button;
}
function updateHoverListeners(imageManager) {
const justifiedContainer = document.getElementById(
"justified-gallery-container"
);
if (!justifiedContainer) return;
const images = justifiedContainer.querySelectorAll("img");
if (CONFIG.enableHoverPreview) {
// Add hover listeners to images that don't have them
images.forEach((img) => {
if (!img.dataset.hoverListeners) {
addHoverListeners(img, imageManager);
img.dataset.hoverListeners = "true";
}
});
// Create hover container if it doesn't exist
if (!imageManager.hoverContainer) {
imageManager.createHoverContainer();
}
} else {
// Remove hover listeners by cloning and replacing elements
images.forEach((img) => {
if (img.dataset.hoverListeners) {
const newImg = img.cloneNode(true);
delete newImg.dataset.hoverListeners;
img.parentNode.replaceChild(newImg, img);
}
});
}
}
// Post info tooltip functions
// Add this after creating the tooltip or in your existing event listeners
function preventPageScrollOnTooltip(tooltip) {
tooltip.addEventListener(
"wheel",
function (e) {
const scrollTop = tooltip.scrollTop;
const scrollHeight = tooltip.scrollHeight;
const height = tooltip.clientHeight;
const delta = e.deltaY;
const isScrollingUp = delta < 0;
const isScrollingDown = delta > 0;
// Prevent scrolling up when already at the top
if (isScrollingUp && scrollTop === 0) {
e.preventDefault();
return;
}
// Prevent scrolling down when already at the bottom
if (isScrollingDown && scrollTop + height >= scrollHeight) {
e.preventDefault();
return;
}
},
{ passive: false }
);
}
function createTooltip() {
const tooltip = document.createElement("div");
tooltip.className = "post-info-tooltip";
tooltip.id = "post-info-tooltip";
document.body.appendChild(tooltip);
// Add scroll containment
preventPageScrollOnTooltip(tooltip);
return tooltip;
}
function positionTooltip(tooltip, button) {
const buttonRect = button.getBoundingClientRect();
const tooltipRect = tooltip.getBoundingClientRect();
const viewport = {
width: window.innerWidth,
height: window.innerHeight,
};
// Add scroll offsets to convert viewport coordinates to document coordinates
const scrollX =
window.pageXOffset || document.documentElement.scrollLeft;
const scrollY =
window.pageYOffset || document.documentElement.scrollTop;
let left, top;
// Try to position to the right first
if (buttonRect.right + tooltipRect.width + 20 < viewport.width) {
left = buttonRect.right + 10 + scrollX;
} else {
// Position to the left
left = buttonRect.left - tooltipRect.width - 10 + scrollX;
}
// Vertical centering with bounds checking
top =
buttonRect.top +
buttonRect.height / 2 -
tooltipRect.height / 2 +
scrollY;
// Keep within viewport bounds (adjust bounds checking to account for scroll)
const minTop = 10 + scrollY;
const maxTop = scrollY + viewport.height - tooltipRect.height - 10;
const minLeft = 10 + scrollX;
const maxLeft = scrollX + viewport.width - tooltipRect.width - 10;
if (top < minTop) top = minTop;
if (top > maxTop) top = maxTop;
if (left < minLeft) left = minLeft;
if (left > maxLeft) left = maxLeft;
tooltip.style.left = left + "px";
tooltip.style.top = top + "px";
}
function parsePostInfo(html) {
const parser = new DOMParser();
const doc = parser.parseFromString(html, "text/html");
const result = {
tags: {
artist: [],
copyright: [],
character: [],
general: [],
meta: [],
},
info: [],
options: [],
};
// Parse tags
const tagLists = {
"artist-tag-list": "artist",
"copyright-tag-list": "copyright",
"character-tag-list": "character",
"general-tag-list": "general",
"meta-tag-list": "meta",
};
Object.entries(tagLists).forEach(([className, type]) => {
const list = doc.querySelector(`ul.${className}`);
if (list) {
const items = list.querySelectorAll("li");
items.forEach((item) => {
const link = item.querySelector(".search-tag");
const count = item.querySelector(".post-count");
if (link) {
result.tags[type].push({
name: link.textContent.trim(),
href: link.getAttribute("href"),
count: count ? count.textContent.trim() : "",
tagType:
item.className.match(/tag-type-(\d+)/)?.[1] ||
"0",
});
}
});
}
});
// Parse information section
const infoSection = doc.querySelector("#post-information ul");
if (infoSection) {
const items = infoSection.querySelectorAll("li");
items.forEach((item) => {
const text = item.textContent.trim();
const links = Array.from(item.querySelectorAll("a")).map(
(a) => ({
text: a.textContent.trim(),
href: a.getAttribute("href"),
})
);
result.info.push({ text, links, html: item.innerHTML });
});
}
// Parse options section
const optionsSection = doc.querySelector("#post-options ul");
if (optionsSection) {
const items = optionsSection.querySelectorAll("li");
items.forEach((item) => {
const text = item.textContent.trim();
const links = Array.from(item.querySelectorAll("a")).map(
(a) => ({
text: a.textContent.trim(),
href: a.getAttribute("href"),
})
);
result.options.push({ text, links, html: item.innerHTML });
});
}
return result;
}
function renderTooltipContent(data) {
let html = "";
// Add cancel/exit button
html += `
<div class="tooltip-exit-button-container">
<button id="tooltip-exit-button" class="tooltip-exit-button" >×</button>
</div>
`;
// Render tags by category
const tagOrder = [
"artist",
"copyright",
"character",
"general",
"meta",
];
const tagLabels = {
artist: "Artist",
copyright: "Copyright",
character: "Character",
general: "General",
meta: "Meta",
};
tagOrder.forEach((type) => {
if (data.tags[type].length > 0) {
html += `<div class="tooltip-section">`;
html += `<h3>${tagLabels[type]}</h3>`;
html += `<div class="tooltip-tags">`;
data.tags[type].forEach((tag) => {
html += `<a href="${tag.href}" class="tooltip-tag tag-type-${tag.tagType}">${tag.name}</a>`;
});
html += `</div></div>`;
}
});
// Render information section
if (data.info.length > 0) {
html += `<div class="tooltip-section tooltip-info">`;
html += `<h3>Information</h3>`;
html += `<ul>`;
data.info.forEach((item) => {
html += `<li>${item.html}</li>`;
});
html += `</ul></div>`;
}
// Render options section
if (data.options && data.options.length > 0) {
html += `<div class="tooltip-section tooltip-options">`;
html += `<h3>Options</h3>`;
html += `<ul>`;
data.options.forEach((option) => {
html += `<li>${option.html}</li>`;
});
html += `</ul></div>`;
}
return html;
}
function showPostInfo(postId, button) {
let tooltip = document.getElementById("post-info-tooltip");
if (!tooltip) {
tooltip = createTooltip();
}
// Hide tooltip if clicking the same button
if (
tooltip.classList.contains("visible") &&
tooltip.dataset.currentPostId === postId
) {
tooltip.classList.remove("visible");
return;
}
tooltip.dataset.currentPostId = postId;
tooltip.innerHTML =
'<div class="tooltip-loading">Loading post information...</div>';
tooltip.classList.add("visible");
positionTooltip(tooltip, button);
// Fetch post information
fetch(`https://danbooru.donmai.us/posts/${postId}`)
.then((response) => response.text())
.then((html) => {
const data = parsePostInfo(html);
tooltip.innerHTML = renderTooltipContent(data);
positionTooltip(tooltip, button);
})
.catch((error) => {
console.error("Error fetching post info:", error);
tooltip.innerHTML =
'<div class="tooltip-loading">Error loading post information</div>';
});
}
function addInfoBtnHandlers() {
document.addEventListener("click", function (e) {
if (e.target.classList.contains("info-button")) {
e.preventDefault();
e.stopPropagation();
const postId = e.target.getAttribute("data-post-id");
showPostInfo(postId, e.target);
}
});
// Hide tooltip when clicking outside or on exit button
function addGlobalTooltipHandler() {
document.addEventListener("click", function (e) {
const tooltip = document.getElementById("post-info-tooltip");
// If tooltip-exit-button clicked, hide tooltip
if (e.target.id === "tooltip-exit-button") {
tooltip?.classList.remove("visible");
return;
}
// If click is outside tooltip and info-button, hide tooltip
if (
tooltip &&
!e.target.closest(".info-button") &&
!e.target.closest(".post-info-tooltip")
) {
tooltip.classList.remove("visible");
}
});
// Hide tooltip on Escape key press
document.addEventListener("keydown", function (e) {
if (e.key === "Escape" || e.key === "Esc") {
tooltip?.classList.remove("visible");
}
});
}
addGlobalTooltipHandler();
}
function initializeJustifiedGallery() {
const postsContainer = document.querySelector(".posts-container");
if (!postsContainer) return;
// Create justified gallery container
const justifiedContainer = document.createElement("div");
justifiedContainer.className = "justified-gallery";
justifiedContainer.id = "justified-gallery-container";
// Convert posts to justified gallery format
const posts = postsContainer.querySelectorAll("article.post-preview");
posts.forEach((post) => {
const link = post.querySelector(".post-preview-link");
const img = post.querySelector(".post-preview-image");
if (link && img) {
//
const postId = post.getAttribute("data-id");
const score = post.getAttribute("data-score") || "0";
// Create new anchor element for justified gallery
const newLink = document.createElement("a");
newLink.href = link.href;
// newLink.title = img.getAttribute("data-title") || img.alt;
// Create new image element
const newImg = document.createElement("img");
newImg.src = img.src;
newImg.alt = img.alt;
// newImg.title = img.title;
// Set data attributes for justified gallery
newImg.setAttribute("data-safe-src", img.src);
// Get original dimensions if available
const width =
img.getAttribute("width") || img.naturalWidth || 180;
const height =
img.getAttribute("height") || img.naturalHeight || 180;
newImg.setAttribute("width", width);
newImg.setAttribute("height", height);
// Create caption element
const caption = document.createElement("div");
caption.className = "jg-caption";
caption.addEventListener("click", handleCaptionClick);
let scoreState;
if (parseInt(score) > 0) scoreState = "positive";
else if (parseInt(score) < 0) scoreState = "negative";
else scoreState = "neutral";
let html = `
<span class="caption-button upvote-btn" data-post-id="${postId}">🡅</span>
<span class="score-display ${scoreState}">${score}</span>
<span class="caption-button favorite-btn" data-post-id="${postId}">❤︎</span>
<div class="right-side-wrapper">
`;
// get content duration
let contentDuration = post.querySelector(
"a.post-preview-link div.post-animation-icon .post-duration"
);
if (contentDuration) {
contentDuration = contentDuration.textContent.trim();
const durLabelHTML = `<span class="content-duration">${contentDuration}</span>`;
html += durLabelHTML;
}
html += `<span class="info-button" data-post-id="${postId}">🛈</span>`;
html += "</div>";
caption.innerHTML += html;
newLink.appendChild(newImg);
newLink.appendChild(caption);
justifiedContainer.appendChild(newLink);
}
});
// Insert justified gallery container
postsContainer.parentNode.insertBefore(
justifiedContainer,
postsContainer
);
// Initialize justified gallery
$(justifiedContainer).justifiedGallery(JG_CONFIG);
// Initialize high-res loading
if (CONFIG.enableHighRes) {
const imageManager = new ImageManager();
const observer = createIntersectionObserver(imageManager);
// Store references for cleanup
justifiedContainer.imageManager = imageManager;
justifiedContainer.intersectionObserver = observer;
// Create toggle button
if (!document.getElementById("preview-toggle-button")) {
justifiedContainer.toggleButton =
createToggleButton(imageManager);
}
// Observe all images and add hover listeners
const images = justifiedContainer.querySelectorAll("img");
images.forEach((img) => {
observer.observe(img);
if (CONFIG.enableHoverPreview) {
addHoverListeners(img, imageManager);
img.dataset.hoverListeners = "true";
}
});
}
}
function handleDynamicContent() {
// Watch for dynamically loaded content
const observer = new MutationObserver((mutations) => {
mutations.forEach((mutation) => {
if (mutation.type === "childList") {
mutation.addedNodes.forEach((node) => {
if (node.nodeType === 1) {
// Element node
// Check if new posts were added
if (
node.matches &&
node.matches("article.post-preview")
) {
updateJustifiedGallery();
} else if (
node.querySelector &&
node.querySelector("article.post-preview")
) {
updateJustifiedGallery();
}
}
});
}
});
});
const postsContainer = document.querySelector(".posts-container");
if (postsContainer) {
observer.observe(postsContainer, {
childList: true,
subtree: true,
});
}
}
function updateJustifiedGallery() {
const justifiedContainer = document.getElementById(
"justified-gallery-container"
);
const postsContainer = document.querySelector(".posts-container");
if (!justifiedContainer || !postsContainer) return;
// Get new posts that aren't in the justified gallery yet
const existingLinks = justifiedContainer.querySelectorAll("a");
const existingHrefs = Array.from(existingLinks).map(
(link) => link.href
);
const newPosts = postsContainer.querySelectorAll(
"article.post-preview"
);
newPosts.forEach((post) => {
const link = post.querySelector(".post-preview-link");
const img = post.querySelector(".post-preview-image");
if (link && img && !existingHrefs.includes(link.href)) {
//
const postId = post.getAttribute("data-id");
const score = post.getAttribute("data-score") || "0";
// Create new anchor element for justified gallery
const newLink = document.createElement("a");
newLink.href = link.href;
// newLink.title = img.getAttribute("data-title") || img.alt;
// Create new image element
const newImg = document.createElement("img");
newImg.src = img.src;
newImg.alt = img.alt;
// newImg.title = img.title;
// Set data attributes for justified gallery
newImg.setAttribute("data-safe-src", img.src);
// Get original dimensions if available
const width =
img.getAttribute("width") || img.naturalWidth || 180;
const height =
img.getAttribute("height") || img.naturalHeight || 180;
newImg.setAttribute("width", width);
newImg.setAttribute("height", height);
// Create caption element
const caption = document.createElement("div");
caption.className = "jg-caption";
caption.addEventListener("click", handleCaptionClick);
let scoreState;
if (parseInt(score) > 0) scoreState = "positive";
else if (parseInt(score) < 0) scoreState = "negative";
else scoreState = "neutral";
let html = `
<span class="caption-button upvote-btn" data-post-id="${postId}">🡅</span>
<span class="score-display ${scoreState}">${score}</span>
<span class="caption-button favorite-btn" data-post-id="${postId}">❤︎</span>
<div class="right-side-wrapper">
`;
// get content duration
let contentDuration = post.querySelector(
"a.post-preview-link div.post-animation-icon .post-duration"
);
if (contentDuration) {
contentDuration = contentDuration.textContent.trim();
const durLabelHTML = `<span class="content-duration">${contentDuration}</span>`;
html += durLabelHTML;
}
html += `<span class="info-button" data-post-id="${postId}">🛈</span>`;
html += "</div>";
caption.innerHTML += html;
newLink.appendChild(newImg);
newLink.appendChild(caption);
justifiedContainer.appendChild(newLink);
// Observe new images for high-res loading
if (
CONFIG.enableHighRes &&
justifiedContainer.intersectionObserver
) {
const newImages = justifiedContainer.querySelectorAll(
"img:not([data-high-res-loading])"
);
newImages.forEach((img) => {
justifiedContainer.intersectionObserver.observe(img);
});
}
// Add hover listeners to new images
if (
CONFIG.enableHoverPreview &&
justifiedContainer.imageManager
) {
const newImages = justifiedContainer.querySelectorAll(
"img:not([data-hover-listeners])"
);
newImages.forEach((img) => {
addHoverListeners(img, justifiedContainer.imageManager);
img.dataset.hoverListeners = "true";
});
}
}
});
// Refresh justified gallery
$(justifiedContainer).justifiedGallery("norewind");
}
function createReloadButton() {
// Create the reload button
const reloadButton = document.createElement("button");
reloadButton.textContent = "↻";
reloadButton.id = "jg-reload-btn";
const postsSection = document.querySelector("#post-sections li");
if (postsSection) {
postsSection.appendChild(reloadButton);
}
// reloadButton.addEventListener("click", (e) => {
// e.preventDefault();
// cleanup();
// initializeJustifiedGallery();
// handleDynamicContent();
// });
}
function relocateSearchBar() {
// Find the search form
const searchForm = document.getElementById("search-box-form");
const contentSection = document.getElementById("content");
if (!searchForm || !contentSection) {
// console.log(
// "Search form or content section not found, retrying..."
// );
return false;
}
// Hide the original search form container to prevent empty space
const originalContainer = searchForm.closest(
'.search-box, #search-box, [class*="search"]'
);
if (originalContainer && originalContainer !== searchForm) {
originalContainer.style.display = "none";
}
// Create a new container for the relocated search bar
const searchContainer = document.createElement("div");
searchContainer.id = "relocated-search-container";
searchContainer.style.cssText = `
display: flex;
justify-content: stretch;
margin-bottom: 5px;
padding: 0;
`;
// Style the search form
searchForm.style.cssText = `
display: flex;
align-items: center;
width: 100%;
background: #1a1a1a;
border: 1px solid #333;
border-radius: 4px;
overflow: hidden;
box-shadow: 0 2px 4px rgba(0,0,0,0.1);
`;
// Style the search input
const searchInput = searchForm.querySelector("#tags");
if (searchInput) {
searchInput.style.cssText = `
flex: 1;
padding: 8px 12px;
border: none;
background: transparent;
color: #fff;
font-size: 14px;
outline: none;
min-width: 0;
`;
// Add placeholder styling
searchInput.setAttribute(
"placeholder",
searchInput.getAttribute("placeholder") || "Search tags..."
);
}
// Style the search button
const searchButton = searchForm.querySelector("#search-box-submit");
if (searchButton) {
searchButton.style.cssText = `
padding: 8px 12px;
border: none;
background: #0066cc;
color: white;
cursor: pointer;
display: flex;
align-items: center;
justify-content: center;
transition: background-color 0.2s;
min-width: 40px;
`;
// Add hover effect
searchButton.addEventListener("mouseenter", function () {
this.style.backgroundColor = "#0052a3";
});
searchButton.addEventListener("mouseleave", function () {
this.style.backgroundColor = "#0066cc";
});
}
// Style the search icon
const searchIcon = searchForm.querySelector(".search-icon");
if (searchIcon) {
searchIcon.style.cssText = `
width: 16px;
height: 16px;
`;
}
// Move the search form to the new container
searchContainer.appendChild(searchForm);
// Insert the container at the top of the content section
contentSection.insertBefore(searchContainer, contentSection.firstChild);
// console.log('Search bar successfully relocated!');
return true;
}
function addJgResetHandlers(cssSelectorArray) {
// add event handlers to reset justified gallery
setTimeout(() => {
if (cssSelectorArray.length > 0) {
cssSelectorArray.forEach((el_sel) => {
const btn = document.querySelector(el_sel);
if (btn) {
btn.addEventListener("click", () => {
setTimeout(() => {
cleanup();
initializeJustifiedGallery();
handleDynamicContent();
}, 0);
});
}
});
}
}, 500);
}
// ================
// Inject Justified Gallery CSS
let css = `
@import url("https://cdnjs.cloudflare.com/ajax/libs/justifiedGallery/3.8.1/css/justifiedGallery.min.css");
/* Custom styles for Danbooru integration */
.justified-gallery {
margin: 0;
padding: 0;
}
.justified-gallery > a {
border: 2px solid transparent;
border-radius: 6px;
background: none !important;
transition: border 0.2s ease, box-shadow 0.2s ease;
}
.justified-gallery > a:hover {
border: 2px solid #faf9f6;
box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}
.justified-gallery > a > img {
transition: transform 0.2s ease;
}
.justified-gallery > a:hover > img {
transform: scale(1.02);
}
/* Hide original gallery */
.post-gallery-grid .posts-container {
display: none;
}
/* Ensure proper spacing */
#posts {
padding: 10px 0px;
}
/* Loading indicator */
.jg-loading {
opacity: 0.6;
}
.justified-gallery > a > img {
border-radius: 4px;
transition: transform 0.2s ease, opacity 0.3s ease;
}
.justified-gallery > a > img[data-high-res-loading="true"] {
opacity: 1;
}
.justified-gallery > a > img[data-high-res-loaded="true"] {
opacity: 1;
}
/* Caption styling */
.jg-caption {
transition: border 0.2s ease, box-shadow 0.2s ease !important;
padding: 4px !important;
font-size: 14px !important;
font-weight: 500 !important;
}
.caption-button {
opacity: 1;
/*font-size: 14px;
font-weight: 600;*/
cursor: pointer;
padding: 2px 4px;
border-radius: 2px;
transition: background-color 0.2s ease;
user-select: none;
}
.caption-button:hover {
background-color: rgba(255, 255, 255, 0.2);
}
/* .caption-button.active {
background-color: rgba(255, 255, 255, 0.3);
} */
.score-display {
/*font-size: 14px;
font-weight: 600;*/
padding: 2px 2px 2px 0px;
}
.caption-button.processing {
opacity: 0.5;
}
.caption-button.processing:hover {
background-color: transparent;
}
.jg-caption .score-display.positive {
color: green;
}
.jg-caption .score-display.negative {
color: red;
}
.jg-caption .favorite-btn.active {
color: red;
}
.jg-caption .upvote-btn.active {
color: green;
}
.jg-caption .content-duration {
padding: 2px 4px;
right: 8px;
}
#danbooru-hover-preview {
position: fixed;
z-index: 10000;
pointer-events: none;
opacity: 0;
transition: opacity 0.2s ease;
overflow: visible; /* Changed from hidden to visible */
}
#danbooru-hover-preview.visible {
opacity: 1;
}
#danbooru-hover-preview img {
display: block;
/* Removed max-height and max-width constraints */
/* Size will be controlled by JavaScript and transform scaling */
height: auto;
width: auto;
/* Ensure smooth scaling */
image-rendering: -webkit-optimize-contrast;
image-rendering: crisp-edges;
border: 4px solid #faf9f6;
border-radius: 4px;
box-shadow: rgba(0, 0, 0, 0.5) 1px 1px 5px, rgba(0, 0, 0, 0.5) -1px 1px 5px,
rgba(0, 0, 0, 0.5) 1px -1px 5px, rgba(0, 0, 0, 0.5) -1px -1px 5px;
}
#preview-toggle-button {
background: rgb(0, 116, 172);
color: white;
border: none;
border-radius: 4px;
padding: 3px 6px;
font-size: 13px;
font-weight: 500;
cursor: pointer;
margin-left: 10px;
transition: all 0.2s ease;
user-select: none;
vertical-align: middle;
}
#preview-toggle-button {
background: rgb(0, 116, 172);
color: white;
border: none;
border-radius: 4px;
padding: 3px 6px;
font-size: 13px;
font-weight: 500;
cursor: pointer;
margin-left: 10px;
transition: all 0.2s ease;
user-select: none;
vertical-align: middle;
}
#preview-toggle-button:hover {
background: #23598fff;
}
#preview-toggle-button:active {
transform: scale(0.98);
}
#preview-toggle-button.disabled {
background: #666;
cursor: not-allowed;
}
#preview-toggle-button.disabled:hover {
background: #666;
}
#jg-reload-btn {
background-color: rgb(0, 116, 172);
color: white;
border: none;
padding: 3px 6px;
border-radius: 4px;
font-size: 13px;
cursor: pointer;
font-weight: 500;
margin-left: 10px;
transition: all 0.2s ease;
user-select: none;
vertical-align: middle;
}
#jg-reload-btn:hover {
background-color: #23598fff;
}
/* Info tooltip styles */
.info-button {
cursor: pointer;
padding: 2px 4px;
border-radius: 2px;
transition: background-color 0.2s ease;
user-select: none;
}
.info-button:hover {
background-color: rgba(255, 255, 255, 0.2);
}
.post-info-tooltip {
position: absolute;
z-index: 1000;
background: rgba(20, 20, 20, 0.95);
border: 1px solid #444;
border-radius: 6px;
padding: 8px;
max-width: 200px;
min-width: 180px;
max-height: 300px; /* Enables vertical scrolling when content is too long */
overflow-y: auto; /* Scrollbar appears only when needed */
box-shadow: 0 4px 16px rgba(0, 0, 0, 0.25);
color: #fff;
font-size: 11px;
line-height: 1.3;
backdrop-filter: blur(8px);
display: none;
scrollbar-width: thin; /* For Firefox */
}
/* Optional scrollbar styling for WebKit browsers (Chrome, Edge, Safari) */
.post-info-tooltip::-webkit-scrollbar {
width: 6px;
}
.post-info-tooltip::-webkit-scrollbar-thumb {
background-color: rgba(255, 255, 255, 0.2);
border-radius: 4px;
}
.post-info-tooltip.visible {
display: block;
}
.tooltip-section {
margin-bottom: 16px;
}
.tooltip-section:last-child {
margin-bottom: 0;
}
.tooltip-section h3 {
margin: 0 0 8px 0;
font-size: 14px;
font-weight: bold;
color: #ccc;
border-bottom: 1px solid #444;
padding-bottom: 4px;
}
.tooltip-tags {
display: flex;
flex-wrap: wrap;
gap: 4px;
margin-bottom: 8px;
}
.tooltip-tag {
padding: 2px 6px;
border-radius: 3px;
font-size: 12px;
text-decoration: none;
color: white;
transition: opacity 0.2s ease;
}
.tooltip-tag:hover {
opacity: 0.8;
}
.tooltip-info ul {
list-style: none;
padding: 0;
margin: 0;
}
.tooltip-info li {
margin-bottom: 6px;
font-size: 12px;
color: #ccc;
}
.tooltip-info a {
color: #66b3ff;
text-decoration: none;
}
.tooltip-info a:hover {
text-decoration: underline;
}
.tooltip-loading {
text-align: center;
color: #888;
padding: 20px;
}
.tooltip-exit-button-container {
position: sticky;
top: 0;
z-index: 1001;
}
.tooltip-exit-button {
position: absolute;
top: 8px;
right: 8px;
position: absolute;
top: 0px;
right: 0px;
border: none;
background: transparent;
font-size: 20px;
font-weight: bold;
cursor: pointer;
color: #888;
padding: 0px 4px;
}
.tooltip-exit-button:hover {
color: #000;
}
.jg-caption .right-side-wrapper {
position:absolute;
right: 4px;
bottom: 4px;
}
`;
function init() {
// add styles
const style = document.createElement("style");
if (CONFIG.enableHiddenSidebar) css += "#sidebar {display: none;}"; // hide sidebar
style.textContent = css;
document.head.appendChild(style);
// Add reload button to reset JG
createReloadButton();
// main fuctions
initializeJustifiedGallery();
handleDynamicContent();
// Add JG reset calls to other buttons on the page
addJgResetHandlers(JG_RESET_SELECTORS);
// relocate search bar
if (CONFIG.enableRelocateSearchBar) relocateSearchBar();
// add info btn handlers
addInfoBtnHandlers();
// Handle page navigation (for single-page apps)
let currentUrl = window.location.href;
new MutationObserver(() => {
if (currentUrl !== window.location.href) {
currentUrl = window.location.href;
cleanup();
setTimeout(() => {
initializeJustifiedGallery();
handleDynamicContent();
}, 500);
}
}).observe(document.body, { childList: true, subtree: true });
// Reset on zoom/resize events to avoid HRT bug
let resizeTimeout;
window.addEventListener("resize", () => {
clearTimeout(resizeTimeout); // Clear previous timeout
resizeTimeout = setTimeout(() => {
cleanup();
initializeJustifiedGallery();
handleDynamicContent();
}, 300);
});
// Prevent error message by defining resetImgSrc as a no-op on images
if (
typeof HTMLImageElement !== "undefined" &&
!HTMLImageElement.prototype.resetImgSrc
)
HTMLImageElement.prototype.resetImgSrc = function () {};
}
// Initialize when DOM is ready
if (document.readyState === "loading") {
document.addEventListener("DOMContentLoaded", () => {
setTimeout(() => {
init();
}, 100);
});
} else {
setTimeout(() => {
init();
}, 100);
}
})();