Allows zooming into images without changing pages. Hold Ctrl+Shift (Cmd+Shift on MAC) when clicking on an image to load it with the extension.
// ==UserScript==
// @name [Global] Image Zoomer
// @description Allows zooming into images without changing pages. Hold Ctrl+Shift (Cmd+Shift on MAC) when clicking on an image to load it with the extension.
// @author MetalTxus
// @version 1.3.9
// @include *
// @exclude *youtube.com/embed*
// @icon https://dl.dropbox.com/s/4mnevtuyvt1eden/48.png
// @require http://code.jquery.com/jquery-3.2.1.min.js
// @require https://greasyfork.org/scripts/396703-key-navigation/code/Key%20navigation.js
// @namespace https://greasyfork.org/users/8682
// ==/UserScript==
const ENABLED_FOR_LINKS = true;
const preloader = 'https://dl.dropbox.com/s/xbxkvw77dfsrum4/preloader.svg';
const extensions = ['.jpg', '.jpeg', '.png', '.gif'];
const jQuery = window.jQuery;
const setUpKeyNavigation = window.setUpKeyNavigation;
const gizContainer = jQuery(`<div id="giz-container">`);
const gizAnchor = jQuery(`<a target="_blank" id="giz-link">`);
const gizImage = jQuery(`<img class="centered" id="giz-image">`);
const gizPreloader = jQuery(`<img class="centered" id="giz-preloader" src="${preloader}">`);
const gizClose = jQuery(`<span id="giz-close">`);
const initialize = () => {
jQuery(`<style>
#giz-container { position: fixed; top: 0; left: 0; height: 100%; width: 100%; background-color: rgba(0, 0, 0, .9); z-index: 10000; display: none; }
#giz-container .centered { position: fixed; left: 50%; top: 50%; }
#giz-preloader { margin-left: -32px; margin-top: -33px; z-index: 10001; filter: drop-shadow(0 0 2px rgba(255, 255, 255, 1)); }
#giz-image { max-height: 100%; max-width: 100%; cursor: url(https://dl.dropbox.com/s/32kv0rup3zw5lho/zoom-in.cur), zoom-in; }
#giz-close { width: 32px; height: 32px; right: 0; margin: 4px; position: absolute; display: block; cursor: pointer; background: url(https://dl.dropbox.com/s/7smpm0ohq2ymfey/close.svg); }
</style>`).appendTo('head');
gizContainer.click(hideContainer);
gizClose.click(hideContainer);
gizAnchor.append(gizImage);
gizContainer.append(gizAnchor);
gizContainer.append(gizPreloader);
gizContainer.append(gizClose);
jQuery('body').append(gizContainer);
gizImage
.on('load', event => {
const newUrl = event.target.src;
gizAnchor.attr('href', newUrl);
showImage();
})
.on('error', () => {
const url = gizImage.attr('src');
for (var i = 0; i < extensions.length; i++) {
if (url.includes(extensions[i])) {
const newUrl = url.replace(extensions[i], extensions[i + 1]);
gizImage.attr('src', newUrl);
break;
}
}
});
jQuery(document).click(event => {
if (
(event.ctrlKey || event.metaKey) &&
event.shiftKey &&
event.target.nodeName.toLowerCase() === 'img' &&
(ENABLED_FOR_LINKS || event.parentElement.target.nodeName !== 'A')
) {
event.preventDefault();
loadPreview(event.target);
}
});
jQuery(window).resize(() => {
if (gizContainer.is(':visible')) {
relocateImage();
}
});
setUpKeyNavigation({
onLeftPressed: e => isContainerVisible() && loadSiblingImage(-1) && e.preventDefault(),
onRightPressed: e => isContainerVisible() && loadSiblingImage(1) && e.preventDefault(),
onDownPressed: e => isContainerVisible() && hideContainer() && e.preventDefault(),
onUpPressed: e => isContainerVisible() && e.preventDefault(),
});
console.info('Script "Global Image Zoomer" ready for its use');
};
const loadPreview = element => {
let newURL = element.src;
if (newURL !== undefined && element.nodeName === 'IMG') {
newURL = parseURL(newURL);
if (removeExtension(newURL) !== removeExtension(gizImage.attr('src')) && newURL !== preloader) {
loadImageUrl(newURL);
}
showContainer();
}
};
const loadImageUrl = newURL => {
showPreloader();
gizImage.attr('src', newURL);
gizAnchor.attr('href', newURL);
};
const loadSiblingImage = increment => {
if (!isContainerVisible()) return;
const imagesUrls = [
...new Set(
jQuery('img')
.map((i, img) => img.src)
.toArray()
)
];
const currentImageUrl = gizImage.attr('src');
const currentIndex = imagesUrls.indexOf(currentImageUrl);
const requestedIndex = currentIndex + increment;
if (requestedIndex < 0 || requestedIndex >= imagesUrls.length) {
hideContainer();
}
/*const newIndex = requestedIndex < 0 ? 0 : requestedIndex >= imagesUrls.length ? imagesUrls.length - 1 : requestedIndex;*/
const newIndex = requestedIndex;
loadImageUrl(imagesUrls[newIndex]);
};
const parseURL = url => {
if (urlContains('deviantart.com')) {
url = url.replace('/200H/', '/').replace('/150/', '/');
} else if (urlContains('zerochan.net')) {
url = url.replace('s3.', 'static.').replace('.240.', '.full.');
}
return url;
};
const urlContains = text => {
return window.location.href.includes(text);
};
const removeExtension = url => {
if (url) {
extensions.forEach(extension => {
url = url.replace(extension, '');
});
}
return url;
};
const relocateImage = () => {
return gizImage.css('margin', `${-Math.ceil(gizImage.height() / 2)}px ${-Math.ceil(gizImage.width() / 2)}px`);
};
const hideContainer = () => {
return gizContainer.fadeOut(100);
};
const showContainer = () => {
return gizContainer.fadeIn(100);
};
const isContainerVisible = () => {
return !jQuery('#giz-container').is(':hidden');
}
const hidePreloader = () => {
return gizPreloader.hide();
};
const showPreloader = () => {
return hideImage() && gizPreloader.show();
};
const hideImage = () => {
return gizImage.hide();
};
const showImage = () => {
return relocateImage() && hidePreloader() && gizImage.show();
};
setTimeout(() => {
if (!jQuery('#giz-container').length) {
initialize();
}
});