// ==UserScript==
// @name Tumblr Dashboard - clickable links to images and display time-stamps
// @namespace tumblr_dashboard_linkify
// @version 4.1.1
// @license GNU AGPLv3
// @description All Tumblr images receive direct link to their high-res variant. A colored box around each image indicates the vertical resolution of the high-res image.
// @author marp
// @homepageURL https://gf.zukizuki.org/en/users/204542-marp
// @match https://www.tumblr.com/
// @match https://www.tumblr.com/*
// @match https://*.media.tumblr.com/*
// @grant GM_xmlhttpRequest
// @connect tumblr.com
// @run-at document-end
// ==/UserScript==
// jshint esversion:8
/* function nsResolver(prefix) {
if (prefix === 'svg') {
return 'http://www.w3.org/2000/svg';
} else {
return null;
}
} */
function doNothing_tumblr_dashboard_linkify(event) {
event.preventDefault();
return false;
}
function insertOrChangeLinkElement(myDoc, wrapElement, linkTarget) {
var parentnode;
parentnode = wrapElement.parentNode;
if (parentnode.nodeName.toLowerCase() == "a") {
parentnode.setAttribute("href", linkTarget);
parentnode.setAttribute("target", "_blank");
parentnode.addEventListener("click", doNothing_tumblr_dashboard_linkify, true);
} else {
var newnode;
newnode = myDoc.createElement("a");
newnode.setAttribute("href", linkTarget);
newnode.setAttribute("target", "_blank");
newnode.addEventListener("click", doNothing_tumblr_dashboard_linkify, true);
parentnode.replaceChild(newnode, wrapElement);
newnode.appendChild(wrapElement);
}
}
function getHighResImageURL(imageElement) {
var srcarray;
var tmpstr;
srcarray = imageElement.getAttribute("srcset").split(",");
// QUICK AND DIRTY - assume largest image is the last in array... seems to be true for Tumblr... but might change...
tmpstr = srcarray[srcarray.length-1].trim();
return tmpstr.substring(0, tmpstr.indexOf(" "));
}
function createImageLinks(myDoc, myContext) {
if (myDoc===null) myDoc= myContext;
if (myDoc===null) return;
if (myContext===null) myContext= myDoc;
var matches;
var imageurl;
// the img might be added as part of a whole post (first expr) - or just the img or the div/img, in which case we need to check if the image is part of the correct hierarchy (second expr)
matches=myDoc.evaluate(".//article//button[@aria-label]//figure//div/img[@srcset and @sizes]"
+ " | " +
"self::img[@srcset and @sizes and parent::div/ancestor::figure/ancestor::button[@aria-label]/ancestor::article]"
+ " | " +
"self::div/img[@srcset and @sizes and parent::div/ancestor::figure/ancestor::button[@aria-label]/ancestor::article]"
+ " | " +
"./ancestor-or-self::article/descendant::button[@aria-label]//figure//div/img[@srcset and @sizes]",
myContext, null, XPathResult.UNORDERED_NODE_SNAPSHOT_TYPE, null);
for(var i=0, el; (i<matches.snapshotLength); i++) {
el=matches.snapshotItem(i);
if (el && el.previousSibling === null) {
try {
imageurl=getHighResImageURL(el);
if (imageurl && imageurl.length > 5) {
checkUrlHeaderOnlyPromise(imageurl, el).then( (result) => {
if ( (result !== null) && (result.size !== null) && (result.url !== null) && (result.element !== null)) {
insertOrChangeLinkElement(result.element.ownerDocument, result.element.parentNode, result.url);
result.element.style = "box-sizing: border-box; border: 5px solid Grey;";
result.element.setAttribute("title", getSizeText(result.size));
getImageDimensionsPromise(result.url, result.element, result.size).then( (result2) => {
result2.element.style = "box-sizing: border-box; border: 5px solid " + result2.color + ";";
result2.element.setAttribute("title", getSizeText(result2.size) + " - " + result2.width + " x " + result2.height);
});
}
});
}
} catch (e) { console.warn("error: ", e); }
}
}
}
var fixedHeightStyle = null;
function processFixedHeightNonsense(myDoc, myContext) {
if (myContext.nodeType === Node.ELEMENT_NODE) {
var matches, i, el;
if (fixedHeightStyle === null) {
matches = myDoc.evaluate("./descendant-or-self::div[ @class and parent::div/parent::article and descendant::button[@aria-label]//figure//img[@srcset and @sizes] ]",
myContext, null, XPathResult.UNORDERED_NODE_SNAPSHOT_TYPE, null);
var compstyles;
for(i=0; (i<matches.snapshotLength); i++) {
el=matches.snapshotItem(i);
compstyles = myDoc.defaultView.getComputedStyle(el);
if (compstyles.getPropertyValue("height") == "300px" && compstyles.getPropertyValue("overflow-y") == "hidden") {
fixedHeightStyle = el.className;
break;
}
}
}
if (fixedHeightStyle !== null) {
matches = myDoc.evaluate("./descendant-or-self::div[ @class='" + fixedHeightStyle + "' and parent::div/parent::article and descendant::button[@aria-label]//figure//img[@srcset and @sizes] ]",
myContext, null, XPathResult.UNORDERED_NODE_SNAPSHOT_TYPE, null);
for(i=0; (i<matches.snapshotLength); i++) {
el=matches.snapshotItem(i);
el.className = "";
}
}
}
}
function getSizeText(sizeInBytes) {
if (sizeInBytes === null) {
return "";
}
if (sizeInBytes >= 1048576) {
return (sizeInBytes / 1048576).toFixed(1) + " MB";
}
else if (sizeInBytes >= 1024) {
return (sizeInBytes / 1024).toFixed(0) + " KB";
}
else {
return sizeInBytes.toFixed(0) + " B";
}
}
// This ASYNC method returns a promise to retrieve the HTTP response header data for the supplied URL.
// It uses an "HTTP HEAD" request which does NOT download the response payload (to minimize network traffic)
async function checkUrlHeaderOnlyPromise(url, element) {
return new Promise((resolve, reject) => {
GM_xmlhttpRequest({
method: 'HEAD',
url: url,
onload: function(response) {
if (response.readyState >= 2) {
var contentLength = -1;
var conlenstr = response.responseHeaders.split("\r\n").find(str => str.toLowerCase().startsWith("content-length: "));
if (conlenstr !== undefined) {
contentLength = parseInt(conlenstr.slice(16), 10);
if (isNaN(contentLength)) {
contentLength = -1;
}
}
resolve( { url: response.finalUrl, size: contentLength, origurl: url, element: element} );
} else {
reject( { url: url, size: -1, origurl: url, element: element } );
}
},
ontimeout: function(response) {
reject( { url: url, size: -1, origurl: url, element: element } );
},
onerror: function(response) {
reject( { url: url, size: -1, origurl: url, element: element } );
}
});
});
}
// This ASYNC method gets the natural dimensions of the supplied image
// This means the image needs to be downloaded fully, unfortunately!
// Thus, a delay is to be expected, except if the image is already cached
// Depending on the image height, the method suggests a "markup color" and then discards the downloaded image again (but does not invalidate cache).
// "divelement" is only passed-through - it is a helper to supply the DOM context to the surrounding asynchronous promise then function of the caller
async function getImageDimensionsPromise(imageurl, element, imagesize) {
var image;
var imageH;
var imageW;
var color;
// sanity check - skip full download of image if it is larger than 20MB
if ( (imagesize !== null) && (imagesize > 20971520) ) {
return {url: imageurl, element: element, width: "unknown", height: "unknown", color: "Grey", size:imagesize};
}
image = new Image();
image.src = imageurl;
await image.decode().then(function() {
imageH = image.naturalHeight;
imageW = image.naturalWidth;
});
image.src = "data:,"; // clear the image, now that we no longer need it
if (imageH >= 2160) {
color = "hsl(160, 100%, 70%)";
} else if (imageH >= 1080) {
color = "hsl(" + (120.0 + 40.0 * ((imageH - 1080.0) / 1080.0)) + ", 100%, " + (50.0 + 20.0 * ((imageH - 1080.0) / 1080.0)) + "%)";
// color = "Lime"; // #00FF00, HSL(120°, 100%, 50%)
} else if (imageH >=270 ) {
color = "hsl(" + (120.0 * ((imageH - 270.0) / 810.0)) + ", 100%, 50%)";
// color = "Red"; // #FF0000, HSL(0°, 100%, 50%)
} else if (imageH < 270 && imageH > 0 ) {
color = "hsl(0, 100%, " + (50.0 * (imageH / 270.0)) + "%)";
// color = "Red"; // #FF0000, HSL(0°, 100%, 50%)
} else {
color = "Grey";
}
return {url: imageurl, element: element, width: imageW, height: imageH, color: color, size:imagesize};
}
var myDateTimeFormat = Intl.DateTimeFormat(undefined, {weekday: "short", year: "numeric", month: "numeric", day: "numeric", hour: "numeric", minute: "numeric" /*, timeZoneName: "shortOffset" */ });
function displayDateTime(myDoc, myContext) {
if (myDoc===null) myDoc= myContext;
if (myDoc===null) return;
if (myContext===null) myContext= myDoc;
var matches;
var datetime;
matches=myDoc.evaluate(".//article//header//time[@datetime and not(@displaytimestampscript='1')]"
+ " | " +
"./ancestor-or-self::article/descendant::header//time[@datetime and not(@displaytimestampscript='1')]",
myContext, null, XPathResult.UNORDERED_NODE_SNAPSHOT_TYPE, null);
for(var i=0, el; (i<matches.snapshotLength); i++) {
el=matches.snapshotItem(i);
if (el) {
try {
datetime = el.getAttribute("datetime");
el.setAttribute("displaytimestampscript", "1"); // flag that this node was added or edited by this script
el.textContent = myDateTimeFormat.format(Date.parse(datetime));
} catch (e) { console.warn("error: ", e); }
}
}
}
function removeImageHtmlCrap(myDoc, myContext) {
if (myDoc===null) myDoc= myContext;
if (myDoc===null) return;
if (myContext===null) myContext= myDoc;
var matches;
var imgurl_full;
var imgurl_match;
var partialurl;
var singlematch;
var singlenode;
var sib;
var vsize;
imgurl_full = window.location.href;
// this part of the URL isd the same for all available sizes of the image
partialurl = imgurl_full.match(/https?:\/\/[^/]+\.tumblr\.com\/[^/]+\//i);
if (partialurl) {
imgurl_match = partialurl[0];
singlematch = myDoc.evaluate("./descendant-or-self::img[contains(@srcset,'" + imgurl_match + "') or contains(@src,'" + imgurl_match + "')]",
myContext, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null);
singlenode = singlematch.singleNodeValue;
if (singlenode) {
// modify the image to use the largest available size varient (which is equal to the page URL!)
// change several styles so that the image fits into the available viewport space
singlenode.parentNode.setAttribute("style", "padding: 0px;");
sib = singlenode.previousElementSibling; //this is the blog title (if available)
if (sib===null) {
singlenode.parentNode.parentNode.setAttribute("style", "padding: 0px;");
sib = singlenode.parentNode.previousElementSibling; //this is the blog title (if available)
}
if (sib) {
vsize = sib.clientHeight;
} else {
vsize = 0;
}
if (singlenode.hasAttribute("srcset")) {
singlenode.removeAttribute("srcset");
singlenode.removeAttribute("sizes");
}
singlenode.setAttribute("src", imgurl_full);
singlenode.setAttribute("style", "max-width: 99vw; max-height: calc(99vh - " + vsize +"px); object-fit: contain;");
singlenode.removeAttribute("class");
}
//remove all DIVs that are unrelated to the image as well as to the blog title (which appears right above the image)
matches = myDoc.evaluate("./descendant-or-self::div[not( ./descendant-or-self::img["+
"(contains(@srcset,'" + imgurl_match + "') or contains(@src,'" + imgurl_match + "'))] )"
+ "and " +
"not( ./descendant-or-self::img[@role='img'] ) ]",
myContext, null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
for(var i=0, el; (i<matches.snapshotLength); i++) {
el=matches.snapshotItem(i);
if (el) {
try {
el.remove();
} catch (e) { console.warn("error: ", e); }
}
}
}
}
var observer;
var config;
var singlematch;
var rootnode;
if ( window.location.href.includes('.media.tumblr.com/') ) {
// special part of script - acting only on direct image URLs to remove the HTML-crap injected by Tumblr
// create an observer instance and iterate through each individual new node
observer = new MutationObserver(function(mutations) {
mutations.forEach(function(mutation) {
mutation.addedNodes.forEach(function(addedNode) {
removeImageHtmlCrap(mutation.target.ownerDocument, addedNode.parentNode);
});
});
});
// configuration of the observer
config = { attributes: false, childList: true, characterData: false, subtree: true };
// new twitter UI has few stable IDs - need to start very high with "root" node
singlematch = document.evaluate("//body[@id='tumblr']/div[@id='root']", document, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null);
//console.info("singlematch: ", singlematch);
rootnode = singlematch.singleNodeValue;
if (rootnode) {
//start the observer for new nodes
observer.observe(rootnode, config);
//process already loaded nodes (the initial posts before scrolling down for the first time)
removeImageHtmlCrap(document, rootnode);
}
} else { // this is "normal" part of script - acting on anything except direct image URLs
// create an observer instance and iterate through each individual new node
observer = new MutationObserver(function(mutations) {
mutations.forEach(function(mutation) {
mutation.addedNodes.forEach(function(addedNode) {
createImageLinks(mutation.target.ownerDocument, addedNode);
displayDateTime(mutation.target.ownerDocument, addedNode);
processFixedHeightNonsense(mutation.target.ownerDocument, addedNode);
});
});
});
// configuration of the observer
config = { attributes: false, childList: true, characterData: false, subtree: true };
// Tumblr UI has few stable IDs - need to start very high with "root" node
singlematch = document.evaluate("//body[@id='tumblr']/div[@id='root']", document, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null);
//console.info("singlematch: ", singlematch);
rootnode = singlematch.singleNodeValue;
//start the observer for new nodes
observer.observe(rootnode, config);
//process already loaded nodes (the initial posts before scrolling down for the first time)
createImageLinks(document, rootnode);
displayDateTime(document, rootnode);
processFixedHeightNonsense(document, rootnode);
}
