Steam Screenshot Scroll

Use mouse wheel to scroll screenshots in Steam

You will need to install an extension such as Tampermonkey, Greasemonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Userscripts to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install a user script manager extension to install this script.

(I already have a user script manager, let me install it!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(I already have a user style manager, let me install it!)

// ==UserScript==
// @name        	Steam Screenshot Scroll
// @namespace   	iFantz7E.SteamScreenshotScroll
// @description 	Use mouse wheel to scroll screenshots in Steam
// @version     	0.03
// @run-at      	document-start
// @match       	*://store.steampowered.com/app/*
// @match       	*://steamcommunity.com/sharedfiles/filedetails/*
// @icon      		https://store.steampowered.com/favicon.ico
// @grant       	none
// @license			GPL-3.0-only
// @copyright		2018, 7-elephant
// @supportURL		https://steamcommunity.com/id/7-elephant/
// @contributionURL	https://www.paypal.me/iFantz7E
// ==/UserScript==

// License: GPL-3.0-only - https://spdx.org/licenses/GPL-3.0-only.html

// Since 26 May 2018
// https://greasyfork.org/scripts/368462-steam-screenshot-scroll

// Modify from:
//   https://greasyfork.org/en/scripts/759-steam-scroll/
//   https://steamstore-a.akamaihd.net/public/javascript/gamehighlightplayer.js

// External variable:
//   jQuery, g_player, HighlightPlayer

// Sample:
//   https://store.steampowered.com/app/227300/Euro_Truck_Simulator_2/
//   https://steamcommunity.com/sharedfiles/filedetails/?id=729791016

(function ()
{
	"use strict";
	// jshint multistr:true
	
function attachOnReady(callback)
{
	document.addEventListener("DOMContentLoaded", function (e)
	{
		callback();
	});
}

function main()
{
	setTimeout(function() 
	{
		var ssPlayer = null;
		
		if (typeof g_player !== "undefined")
		{
			ssPlayer = g_player;
		}
		else if (typeof HighlightPlayer !== "undefined")
		{
			HighlightPlayer.prototype.HighlightItem = function(elem, bUserAction)
			{
				// Modify
				if (!ssPlayer)
				{
					ssPlayer = this;
				}
				
				// Original
				{
					var $Elem = $JFromIDOrElement(elem);
					if (this.BIsMovie($Elem))
						this.HighlightMovie(this.GetMovieId($Elem), bUserAction);
					else
						this.HighlightScreenshot(this.GetScreenshotId($Elem));

					var nextItem = this.m_activeItem.next('.highlight_player_item');
					if (nextItem && this.BIsScreenshot(nextItem))
						this.LoadScreenshot(this.GetScreenshotId(nextItem));
				}
			}
			
			// Force set ssPlayer
			jQuery(".highlight_strip_item.focus").click();
		}
			
		var lastScroll = Date.now();
		
		function ssScroll(ev) {
			ev.preventDefault();
			
			if (Date.now() - lastScroll < 250)
			{
				// Prevent too fast scrolling
				return;
			}
			else
			{
				lastScroll = Date.now();
			}
			
			var isScrollDown = (ev.deltaY > 0);
			var siblingProp = isScrollDown ? "next" : "prev";
			
			var eleExpect = jQuery(".highlight_strip_screenshot.focus")
				[siblingProp](".highlight_strip_screenshot")[0];
				
			if (!eleExpect) {
				var elesSs = jQuery(".highlight_strip_screenshot");
				eleExpect = elesSs[isScrollDown ? 0 : elesSs.length - 1];
			}
			
			if (ssPlayer)
			{
				ssPlayer.HighlightItem(eleExpect);
				ssPlayer.ClearInterval();
			}
		}
		
		var eleHolder = jQuery("#highlight_strip")[0];
		if (eleHolder)
		{
			eleHolder.addEventListener("wheel", ssScroll);
		}
		
		if (ssPlayer)
		{
			ssPlayer.ClearInterval();
		}
	}, 1000);
}

attachOnReady(main);

})();

// End