Add 'Search by Image' in browser context menu when you right click on image to search Google with that image.
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// ==UserScript==
// @name Google Image Search Context Menu
// @namespace http://userscripts.org/users/12
// @description Add 'Search by Image' in browser context menu when you right click on image to search Google with that image.
// @version 1.2
// @author LouCypher
// @license GPL
// @resource license https://raw.github.com/LouCypher/userscripts/master/licenses/GPL/LICENSE.txt
// @include *
// @exclude file://*
// @grant GM_openInTab
// ==/UserScript==
if (!("contextMenu" in document.documentElement && "HTMLMenuItemElement" in window)) return;
var body = document.body;
body.addEventListener("contextmenu", initMenu, false);
var menu = body.appendChild(document.createElement("menu"));
menu.outerHTML = '<menu id="userscript-search-by-image" type="context">\
<menuitem label="Search this image"\
icon="data:image/png;base64,\
iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAABHNCSVQICAgIfAhkiAAAAAlwSFlz\
AAAK6wAACusBgosNWgAAABx0RVh0U29mdHdhcmUAQWRvYmUgRmlyZXdvcmtzIENTNXG14zYAAAEl\
SURBVDiNY/z//z8DJYCRkIKsthv/kRX9Z2BgmFalARdiIcaGKZXqcH5O+01U+ay2G3MYGBiSiXUm\
mofnsBDSjEUTMkiBe2Eq1JnZ7TcZBHhZGNythBl0lLkZODmYGX7++sdw/sZnhl3H3zF8+voHwwsY\
FkR5ijNICLMzTF31hOHnr38MHGxMDJlhMgwv3vxkWL7jJYpaJmzu0lTigWtmYGBg+PHrH8P0VU8Y\
tJV5MNRiNYCfmxmuGQZ+/PrHwMmOqRyrAX///WfgYEOV4mBjwjAUpwHHL31iyA6XgRvCwcbEkBUm\
w3DuxmcMtVgDkYONicHLVoTBSJOXgYONieHHz38Ml+98Ydh88DXDtx//CBtACmBiYGCYS4H+OYyU\
5kasgUgKAADN8WLFzlj9rgAAAABJRU5ErkJggg=="></menuitem>\
</menu>';
document.querySelector("#userscript-search-by-image menuitem").addEventListener("click", searchImage, false);
function initMenu(aEvent)
{
// Executed when user right click on web page body
// aEvent.target is the element you right click on
var node = aEvent.target;
var item = document.querySelector("#userscript-search-by-image menuitem");
if (node.localName == "img")
{
body.setAttribute("contextmenu", "userscript-search-by-image");
item.setAttribute("imageURL", node.src);
}
else
{
body.removeAttribute("contextmenu");
item.removeAttribute("imageURL");
}
}
function addParamsToForm(aForm, aKey, aValue)
{
var hiddenField = document.createElement("input");
hiddenField.setAttribute("type", "hidden");
hiddenField.setAttribute("name", aKey);
hiddenField.setAttribute("value", aValue);
aForm.appendChild(hiddenField);
}
function searchImage(aEvent)
{
// Executed when user click on menuitem
// aEvent.target is the <menuitem> element
var imageURL = aEvent.target.getAttribute("imageURL");
if (imageURL.indexOf("data:") == 0)
{
var base64Offset = imageURL.indexOf(",");
if (base64Offset != -1)
{
var inlineImage = imageURL.substring(base64Offset + 1)
.replace(/\+/g, "-")
.replace(/\//g, "_")
.replace(/\./g, "=");
var form = document.createElement("form");
form.setAttribute("method", "POST");
form.setAttribute("action", "//www.google.com.hk/searchbyimage/upload");
form.setAttribute("enctype", "multipart/form-data");
form.setAttribute("target", "_blank");
addParamsToForm(form, "image_content", inlineImage);
addParamsToForm(form, "filename", "");
addParamsToForm(form, "image_url", "");
body.appendChild(form);
form.submit();
}
}
else
{
//GM_openInTab("http://www.google.com.hk/searchbyimage?image_url="+encodeURIComponent(imageURL));
GM_openInTab("http://stu.baidu.com/i?objurl=" + encodeURIComponent(imageURL) + "&filename=&rt=0&rn=10&ftn=searchstu&ct=1&stt=0&tn=shituresult");
}
}