Rule34.xxx - Image Hover

Shows the full size image when you hover over a thumbnail. Also adds arrow key navigation.

K instalaci tototo skriptu si budete muset nainstalovat rozšíření jako Tampermonkey, Greasemonkey nebo Violentmonkey.

K instalaci tohoto skriptu si budete muset nainstalovat rozšíření jako Tampermonkey nebo Violentmonkey.

K instalaci tohoto skriptu si budete muset nainstalovat rozšíření jako Tampermonkey nebo Violentmonkey.

K instalaci tohoto skriptu si budete muset nainstalovat rozšíření jako Tampermonkey nebo Userscripts.

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

K instalaci tohoto skriptu si budete muset nainstalovat manažer uživatelských skriptů.

(Už mám manažer uživatelských skriptů, nechte mě ho nainstalovat!)

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.

(Už mám manažer uživatelských stylů, nechte mě ho nainstalovat!)

// ==UserScript==
// @name         Rule34.xxx - Image Hover
// @namespace    http://tampermonkey.net/
// @version      1.0.2
// @description  Shows the full size image when you hover over a thumbnail. Also adds arrow key navigation.
// @author       Gondola
// @match        https://rule34.xxx/*
// @require      http://code.jquery.com/jquery-3.4.1.min.js
// @compatible   firefox
// @compatible   chrome
// ==/UserScript==


(function() {

    /*---START Keyboard Navigation---*/
    var pagination = document.getElementsByClassName("pagination")[0].children

    for(var i = 0; i < pagination.length; i++)
    {
        if(pagination[i].nodeName == "B")
        {
            pagination[i].classList.add("key_nav_pagination")
        }
    }

    window.addEventListener("keyup", checkKeyPress, false);

    function checkKeyPress(key)
    {
        if(document.activeElement.tagName != 'INPUT')
        {

            if(key.keyCode == "39")
            {
                document.getElementsByClassName("key_nav_pagination")[0].nextSibling.nextSibling.click()
            }

            if(key.keyCode == "37")
            {
                document.getElementsByClassName("key_nav_pagination")[0].previousSibling.previousSibling.click()
            }
        }
    }
    /*---END Keyboard Navigation---*/



    /*---START Image Hover---*/
    document.getElementById("body").insertAdjacentHTML('afterbegin', "<img id='img_hover_container' style='float:left; position:absolute; max-width:200px; overflow:hidden; z-index:9999;' src=''>")

    var img_type = "jpg";
    var mouse_offset_x = 16;
    var mouse_offset_y = 16;
    var mouse_side = false;
    var currentMousePos = { x: -1, y: -1 };

    $(".preview").mouseenter(function()
    {
        img_type = "jpg"
        $("#img_hover_container").attr("src",this.src.replace("thumbnails","/images").replace("thumbnail_",""))
        $("#img_hover_container").css("max-height",$(window).height())

    })

    $(".preview").mouseleave(function()
    {
        $("#img_hover_container").attr("src","")
    })


    $(document).mousemove(function(event) {
        currentMousePos.x = event.pageX;
        currentMousePos.y = event.pageY;
        update_pos();
    });
    
    
    //remove tag tooltip on hover
    var thumb_list = document.getElementsByClassName("preview")

    for(var tl = 0; tl < thumb_list.length; tl++)
    {
        thumb_list[tl].title = "";
    }


    function update_pos(){
        //Mouse Horizontal
        if(currentMousePos.x > ($(window).width()/2))
        {
            mouse_side = true;
            mouse_offset_x = -$("#img_hover_container").width() - 16;
            $("#img_hover_container").css("max-width", currentMousePos.x - 16)
        }
        else
        {
            mouse_side = false;
            mouse_offset_x = 16;
            $("#img_hover_container").css("max-width", $(window).width()-currentMousePos.x)
        }

        //Mouse Vertical
        if(currentMousePos.y > ($(window).height() - $("#img_hover_container").height()))
        {
            mouse_offset_y = ($(window).height() - $("#img_hover_container").height()) + $(document).scrollTop();
        }
        else
        {
            mouse_offset_y = currentMousePos.y + 16;
        }

        $("#img_hover_container").offset({
            top: mouse_offset_y,
            left: currentMousePos.x + mouse_offset_x
        });
    }

    //image type handler
    $("#img_hover_container").on('error', function()
    {
        if(img_type == "jpg")
        {
            $("#img_hover_container").attr("src", $("#img_hover_container").attr("src").replace("jpg","png"))
            img_type = "png";
        }
        else if(img_type == "png")
        {
            $("#img_hover_container").attr("src", $("#img_hover_container").attr("src").replace("png","jpeg"))
            img_type = "jpeg";
        }
        else if(img_type == "jpeg")
        {
            $("#img_hover_container").attr("src", $("#img_hover_container").attr("src").replace("jpeg","gif"))
            img_type = "gif";
        }
    })

    //Update image position periodically
    var intervalID = setInterval(function(){update_pos();}, 100);

    $("#img_hover_container").css("max-height", $(window).height())
    /*---END Image Hover---*/

})();