ImageBoard Viewer/Downloader

A simple quick and dirty image viewer for gelbooru.com and rule34.xxx supports all formats from gif to webm.

Versão de: 14/05/2017. Veja: a última versão.

Você precisará instalar uma extensão como Tampermonkey, Greasemonkey ou Violentmonkey para instalar este script.

Você precisará instalar uma extensão como Tampermonkey ou Violentmonkey para instalar este script.

Você precisará instalar uma extensão como Tampermonkey ou Violentmonkey para instalar este script.

Você precisará instalar uma extensão como Tampermonkey ou Userscripts para instalar este script.

Você precisará instalar uma extensão como o Tampermonkey para instalar este script.

Você precisará instalar um gerenciador de scripts de usuário para instalar este script.

(Eu já tenho um gerenciador de scripts de usuário, me deixe instalá-lo!)

Você precisará instalar uma extensão como o Stylus para instalar este estilo.

Você precisará instalar uma extensão como o Stylus para instalar este estilo.

Você precisará instalar uma extensão como o Stylus para instalar este estilo.

Você precisará instalar um gerenciador de estilos de usuário para instalar este estilo.

Você precisará instalar um gerenciador de estilos de usuário para instalar este estilo.

Você precisará instalar um gerenciador de estilos de usuário para instalar este estilo.

(Eu já possuo um gerenciador de estilos de usuário, me deixar fazer a instalação!)

// ==UserScript==
// @name         ImageBoard Viewer/Downloader
// @version      1.25
// @description  A simple quick and dirty image viewer for gelbooru.com and rule34.xxx supports all formats from gif to webm.
// @author       PineappleLover69
// @include      https://gelbooru.com*
// @include      https://rule34.xxx*
// @include      http://rule34.xxx*
// @include      https://chan.sankakucomplex.com*
// @namespace https://greasyfork.org/users/120106
// ==/UserScript==


(function () {

    //Settings
    var StartImageHeight = 650;
    var AutoShowImageView = false;
    var DisableImageLinks = true;


    var siteInfo = {
        hostName: window.location.hostname,
        get siteIndex() {
            if (this.hostName == "gelbooru.com" || this.hostName == "rule34.xxx") {
                return "gel+r34";
            } else if (this.hostName == "chan.sankakucomplex.com") {
                return "sankaku";
            }
        }
    };


    //this group of vars is to be set by SetVars() and depends on the current website
    var buttonInsertionPoint, posts, imgList, tagEntry, tagTypeLookup, apiCallJson, tagArray, postSources;


    var tagDictionary = {};

    function GelbooruLayout() {
        buttonInsertionPoint = document.getElementsByClassName("content")[0];
        posts = document.getElementById("post-list");
        imgList = document.getElementsByClassName("thumb");
        tagEntry = document.getElementById("tags");
        postSources = Array(imgList.length);

        tagTypeLookup = {
            0: "tag-type-general",
            1: "tag-type-artist",
            2: "tag-type-copyright",
            3: "tag-type-copyright",
            4: "tag-type-character"
        };
    }

    function SetVars() {
        switch (siteInfo.siteIndex) {
            case "gel+r34":
                GelbooruLayout();
                break;
            case "sankaku":
                GelbooruLayout();
                break;
        }
    }

    SetVars();
    BatchApiCall();

    var imgIndex = 0;
    var imgOpened = false;

    if (DisableImageLinks) {
        for (let i = 0; i < imgList.length;) {
            try {
                imgList[i].setAttribute("openRef", imgList[i].childNodes[0].getAttribute("href"));
                imgList[i].childNodes[0].removeAttribute("href");
                imgList[i].childNodes[0].addEventListener("click", ImgClick);
                i++;
            } catch (ex) {
                imgList[i].remove();
            }
        }
    }

    function ImgClickChildParent(child, parent){
        switch (siteInfo.siteIndex) {
            case "gel+r34":
                child = e.target.parentNode.parentNode;
                parent = child.parentNode;
                break;
            case "sankaku":
                child = e.target.parentNode.parentNode;
                parent = child.parentNode;
                break;
        }
    }

    function ImgClick(e) {
        if (!imgOpened)
            ImgView();

        var child, parent;
        ImgClickChildParent(child, parent);
        console.log(child);

        // The equivalent of parent.children.indexOf(child)
        imgIndex = Array.prototype.indexOf.call(parent.children, child);
        SetImg();
        imgViewBtn.scrollIntoView();
    }

    imgViewBtn = document.createElement("button");
    imgViewBtn.innerHTML = "Image View";
    imgViewBtn.onclick = ImgView;
    var dlAllBtn = document.createElement("button");
    dlAllBtn.innerHTML = "Download All";
    dlAllBtn.onclick = dlAll;

//imgViewBtn.setAttribute("class", "active");
    buttonInsertionPoint.insertBefore(dlAllBtn, buttonInsertionPoint.childNodes[0]);
    buttonInsertionPoint.insertBefore(imgViewBtn, buttonInsertionPoint.childNodes[0]);

    var imgMouseDown = false;
    var imgDownPosX, imgDownPosY, imgDownHeight = 0;

    function ImgView() {
        if (imgOpened)
            return;

        holdDiv = document.createElement("div");
        holdDiv.setAttribute("align", "center");
        buttonInsertionPoint.insertBefore(holdDiv, buttonInsertionPoint.childNodes[2]);

        imgViewImg = document.createElement("img");
        imgViewImg.setAttribute("height", StartImageHeight);
        holdDiv.appendChild(imgViewImg);
        videoImg = document.createElement("video");
        videoImg.setAttribute("height", StartImageHeight);
        videoImg.setAttribute("autoplay", true);
        videoImg.setAttribute("controls", true);
        videoImg.setAttribute("loop", true);
        videoImg.setAttribute("hidden", true);
        holdDiv.appendChild(videoImg);

        preloadImg1 = document.createElement("img");
        preloadImg2 = document.createElement("img");
        preloadImg1.setAttribute("hidden", true);
        preloadImg2.setAttribute("hidden", true);
        holdDiv.appendChild(preloadImg1);
        holdDiv.appendChild(preloadImg2);

        preloadImg3 = document.createElement("img");
        preloadImg4 = document.createElement("img");
        preloadImg3.setAttribute("hidden", true);
        preloadImg4.setAttribute("hidden", true);
        holdDiv.appendChild(preloadImg3);
        holdDiv.appendChild(preloadImg4);

        imgViewImg.addEventListener('load', DoPreload);

        imgViewImg.addEventListener('mousedown', ImageMouseDown);
        imgViewImg.addEventListener('mouseup', ImageMouseUp);
        imgViewImg.addEventListener('mousemove', ImageMouseMove);
        imgViewImg.addEventListener('mouseleave', ImageMouseLeave);

        videoImg.addEventListener('mousedown', ImageMouseDown);
        videoImg.addEventListener('mouseup', ImageMouseUp);
        videoImg.addEventListener('mousemove', ImageMouseMove);
        videoImg.addEventListener('mouseleave', ImageMouseLeave);

        prevBtn = document.createElement("button");
        prevBtn.innerHTML = "Prev";
        prevBtn.onclick = PrevImg;
        nextBtn = document.createElement("button");
        nextBtn.innerHTML = "Next";
        nextBtn.onclick = NextImg;
        dlBtn = document.createElement("button");
        dlBtn.innerHTML = "Download";
        dlBtn.onclick = DownloadCurrent;
        opBtn = document.createElement("button");
        opBtn.innerHTML = "Open Src";
        opBtn.onclick = OpenSrc;
        spacer = document.createElement("img");
        spacer.setAttribute("width", 30);
        spacer2 = document.createElement("img");
        spacer2.setAttribute("width", 30);
        spacer3 = document.createElement("img");
        spacer3.setAttribute("width", 30);
        holdDiv.appendChild(document.createElement("br"));
        holdDiv.appendChild(prevBtn);
        holdDiv.appendChild(spacer);
        holdDiv.appendChild(dlBtn);
        holdDiv.appendChild(spacer2);
        holdDiv.appendChild(opBtn);
        holdDiv.appendChild(spacer3);
        holdDiv.appendChild(nextBtn);

        imgOpened = true;
        document.getElementById("header").remove();
        document.getElementsByClassName("header")[0].remove();

        document.addEventListener("keydown", keyInput);
        SetImg();
    }

    if (AutoShowImageView)
        ImgView();


    function BatchApiCall() {
        var urlItems = getJsonFromUrl();
        var pid = 0;
        if (urlItems.pid)
            pid = urlItems.pid / 42;

        var tags = tagEntry.value;
        var limit = imgList.length;

        var request = "/index.php?page=dapi&s=post&q=index&limit=" + limit + "&tags=" + tags + "&pid=" + pid;

        var xhttp = new XMLHttpRequest();
        xhttp.onreadystatechange = function () {
            if (this.readyState == 4 && this.status == 200) {
                apiCallJson = xmlToJson(this.responseXML);

                for (var i = 0; i < limit; i++) {
                    if (!apiCallJson.posts.post[i])
                        break;
                    postSources[i] = apiCallJson.posts.post[i]["@attributes"].file_url;
                }

                CreateTagBase();
            }
        };
        xhttp.open("GET", request, true);
        xhttp.send();
    }

    function CreateTagBase() {
        var uniqueTagList = [];
        for (var i = 0; i < imgList.length; i++) {
            var currentPost = apiCallJson.posts.post[i];
            var tags = currentPost["@attributes"].tags;
            var splitTags = tags.split(' ');

            uniqueTagList.push(splitTags);
        }
        uniqueTagList = mergeDedupe(uniqueTagList);

        var uniqueTagString = "";
        var uniqueStringArray = [];
        var usCount = 0;
        for (i = 0; i < uniqueTagList.length; i++) {
            if (usCount === 0) {
                uniqueTagString += uniqueTagList[i];
            } else {
                uniqueTagString += " " + uniqueTagList[i];
            }
            usCount++;
            if (usCount > 99 || i == uniqueTagList.length - 1) {
                usCount = 0;
                uniqueStringArray.push(uniqueTagString);
                uniqueTagString = "";
            }
        }

        for (i = 0; i < uniqueStringArray.length; i++) {
            var request = "/index.php?page=dapi&s=tag&q=index&names=" + encodeURIComponent(uniqueStringArray[i]);
            TagRequest(request);
        }


    }

    function TagRequest(tagRequest) {
        var xhttp = new XMLHttpRequest();
        xhttp.onreadystatechange = function () {
            if (this.readyState == 4 && this.status == 200) {
                var tagPageJson = xmlToJson(this.responseXML);
                if (!tagArray)
                    tagArray = tagPageJson.tags.tag;
                else
                    tagArray = tagArray.concat(tagPageJson.tags.tag);

                var tmpArray = tagPageJson.tags.tag;
                for (i = 0; i < tmpArray.length; i++) {
                    tagDictionary[tmpArray[i]["@attributes"].name] = tmpArray[i]["@attributes"];
                }

                if (imgOpened)
                    SetNewTags();
            }
        };
        xhttp.open("GET", tagRequest, true);
        xhttp.send();
    }


    function OpenSrc() {
        window.open(imgList[imgIndex].getAttribute("openRef"));
    }


    function SetCurrentSrc() {
        currentSrc = GetSrcForImg(imgIndex);
    }

    function GetSrcForImg(getIndex) {
        if (postSources[getIndex]) {
            return postSources[getIndex];
        } else {
            var tmpSrc = imgList[getIndex].id;
            tmpSrc = tmpSrc.replace("s", "");

            var thing = JsonHttpRequest("/index.php?page=dapi&s=post&q=index&id=" + tmpSrc.toString());

            tmpSrc = thing.posts.post["@attributes"].file_url;
            postSources[getIndex] = tmpSrc;
            return tmpSrc;
        }
    }


    function RemoveTags() {
        var tagBar = document.getElementById("tag-sidebar");
        for (var i = tagBar.childNodes.length - 1; i >= 1; i--) {
            tagBar.childNodes[i].remove();
        }
    }

    function SetNewTags() {
        if (!tagArray)
            return;

        var currentPost = apiCallJson.posts.post[imgIndex];
        var tags = currentPost["@attributes"].tags;
        var splitTags = tags.split(' ');

        RemoveTags();

        var tagBar = document.getElementById("tag-sidebar");
        var firstTag = tagBar.childNodes[0];
        var stringToReplace = firstTag.innerHTML.substring(firstTag.innerHTML.indexOf("search=") + 7, firstTag.innerHTML.indexOf('" title="Wiki"'));

        for (var i = 1; i < splitTags.length; i++) {
            AddTag(splitTags[i], tagBar, firstTag, stringToReplace);
        }
        firstTag.remove();
        RemoveEmptyTags();
    }

    function RemoveEmptyTags() {
        var tagBar = document.getElementById("tag-sidebar");
        for (var i = tagBar.childNodes.length - 1; i >= 0; i--) {
            let tAg = tagBar.childNodes[i];
            if (tAg.childNodes[7].innerHTML === "") {
                tAg.remove();
            }
        }
    }


    function AddTag(tagName, tagParent, tagToClone, stringToReplace) {
        try {
            var clonedTag = tagToClone.cloneNode(true);
            tagParent.appendChild(clonedTag);
            clonedTag.innerHTML = clonedTag.innerHTML.replaceAll(stringToReplace, encodeURIComponent(tagName));
            clonedTag.childNodes[7].innerHTML = tagName.replace(/_/g, " ");

            var jsonTag = tagDictionary[tagName];
            var tagType = jsonTag.type;
            clonedTag.setAttribute("class", tagTypeLookup[tagType]);
            clonedTag.childNodes[9].innerHTML = jsonTag.count;
        } catch (ex) {
            console.log("Failed tag: " + tagName);
            //console.log(ex);
            console.log(tagDictionary);
        }
    }

    function SetImg() {
        SetCurrentSrc();
        var dI = currentSrc.lastIndexOf(".");
        var fileExt = currentSrc.substring(dI + 1);

        if (fileExt.toLowerCase() == "webm") {
            videoImg.setAttribute("src", currentSrc);
            videoImg.removeAttribute("hidden");
            videoImg.play();
            imgViewImg.setAttribute("hidden", true);
            setTimeout(DoPreload, 200);
        } else {
            imgViewImg.setAttribute("src", "");
            imgViewImg.removeAttribute("hidden");
            videoImg.setAttribute("hidden", true);
            videoImg.pause();

            setTimeout(SetImageAfterTimeout, 1);
        }

        SetNewTags();
    }

    function SetImageAfterTimeout() {
        imgViewImg.setAttribute("src", currentSrc);
    }


    function DoPreload() {
        var preIndex = imgIndex + 1;
        if (preIndex >= imgList.length)
            preIndex = 0;
        preloadImg1.src = GetSrcForImg(preIndex);

        preIndex++;
        if (preIndex >= imgList.length)
            preIndex = 0;
        preloadImg2.src = GetSrcForImg(preIndex);

        preIndex = imgIndex - 1;
        if (preIndex < 0)
            preIndex = imgList.length - 1;
        preloadImg3.src = GetSrcForImg(preIndex);

        //preIndex--;
        //if(preIndex < 0)
        //    preIndex = imgList.length - 1;
        //preloadImg4.src = GetSrcForImg(preIndex);
    }

    function DownloadCurrent() {
        SetCurrentSrc();
        var dI = currentSrc.lastIndexOf(".");
        var uI = currentSrc.lastIndexOf("/") + 5;
        var fileExt = currentSrc.substring(dI);
        var imgName = "tags-" + tagEntry.value + " ";
        if (tagEntry.value === "") {
            imgName = currentSrc.substring(uI, dI);
        } else {
            imgName += currentSrc.substring(uI, dI);
        }
        imgName += " id-" + imgList[imgIndex].childNodes[0].getAttribute("id");
        imgName += fileExt;
        //console.log(imgName);
        var dl = document.createElement("a");
        dl.setAttribute("href", currentSrc);
        dl.setAttribute("download", imgName);
        dl.click();
        dl.remove();

        document.body.focus();
    }

    function dlAll() {
        var prevIndex = imgIndex;
        for (imgIndex = 0; imgIndex < imgList.length;) {
            try {
                DownloadCurrent();
                imgIndex++;
            } catch (ex) {
                console.log(ex);
                imgIndex++;
                //imgList[imgIndex].remove();
            }
        }

        imgIndex = prevIndex;
    }


    function keyInput(e) {
        if (document.activeElement != tagEntry) {
            if (e.keyCode === 32) {
                e.preventDefault();
                return false;
            }
            if (e.keyCode === 37) {
                e.preventDefault();
                PrevImg();
                return false;
            }
            if (e.keyCode === 39) {
                e.preventDefault();
                NextImg();
                return false;
            }
            if (e.keyCode === 40) {
                e.preventDefault();
                DownloadCurrent();
                return false;
            }
        }
    }

    //----------everything below here is either utility or is pretty set in stone-------------------

    Element.prototype.remove = function () {
        if (this)
            this.parentElement.removeChild(this);
    };

    String.prototype.replaceAll = function (search, replacement) {
        var target = this;
        return target.replace(new RegExp(search, 'g'), replacement);
    };

    function mergeDedupe(arr) {
        return [...new Set([].concat(...arr))];
    }

    function PrevImg() {
        imgIndex--;
        if (imgIndex < 0)
            imgIndex = imgList.length - 1;
        SetImg();
    }

    function NextImg() {
        imgIndex++;
        if (imgIndex >= imgList.length)
            imgIndex = 0;
        SetImg();
    }

    function ImageMouseDown(e) {
        e.preventDefault();
        imgMouseDown = true;
        imgDownPosX = e.screenX;
        imgDownPosY = e.screenY;
        imgDownHeight = Number(imgViewImg.getAttribute("height"));
        return false;
    }

    function ImageMouseUp(e) {
        e.preventDefault();
        imgMouseDown = false;
        return false;
    }

    function ImageMouseMove(e) {
        if (imgMouseDown) {
            e.preventDefault();
            var moveDist = e.screenY - Number(imgDownPosY);
            imgViewImg.setAttribute("height", imgDownHeight + moveDist * 2);
            videoImg.setAttribute("height", imgDownHeight + moveDist * 2);
            return false;
        }
    }

    function ImageMouseLeave(e) {
        e.preventDefault();
        imgMouseDown = false;
        return false;
    }

    function getJsonFromUrl() {
        var query = location.search.substr(1);
        var result = {};
        query.split("&").forEach(function (part) {
            var item = part.split("=");
            result[item[0]] = decodeURIComponent(item[1]);
        });
        return result;
    }

    function JsonHttpRequest(urlRequest) {
        var xhr = new XMLHttpRequest();
        xhr.open("GET", urlRequest, false);
        xhr.send();
        return xmlToJson(xhr.responseXML);
    }

    // Changes XML to JSON
    function xmlToJson(xml) {

        // Create the return object
        var obj = {};

        if (xml.nodeType == 1) { // element
            // do attributes
            if (xml.attributes.length > 0) {
                obj["@attributes"] = {};
                for (var j = 0; j < xml.attributes.length; j++) {
                    var attribute = xml.attributes.item(j);
                    obj["@attributes"][attribute.nodeName] = attribute.nodeValue;
                }
            }
        } else if (xml.nodeType == 3) { // text
            obj = xml.nodeValue;
        }

        // do children
        if (xml.hasChildNodes()) {
            for (var i = 0; i < xml.childNodes.length; i++) {
                var item = xml.childNodes.item(i);
                var nodeName = item.nodeName;
                if (typeof(obj[nodeName]) == "undefined") {
                    obj[nodeName] = xmlToJson(item);
                } else {
                    if (typeof(obj[nodeName].push) == "undefined") {
                        var old = obj[nodeName];
                        obj[nodeName] = [];
                        obj[nodeName].push(old);
                    }
                    obj[nodeName].push(xmlToJson(item));
                }
            }
        }
        return obj;
    }


})
();