Image Viewer

inject this script into any page, and RIGHT-CLICK on the image you want to view full-size

As of 2014-05-04. See the latest version.

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 or Violentmonkey 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       Image Viewer
// @namespace  https://gist.github.com/bradenbest/04bd0fc2d57ec650449f
// @version    1.4.3
// @description  inject this script into any page, and RIGHT-CLICK on the image you want to view full-size
// @copyright  2014 - present, Braden Best
// ==/UserScript==
 
(function initialize(init){
  var init = init || 0;
  function push(url){
    var img = document.createElement('img'),
        img_helper = document.createElement('div'),
        img_helper_link = document.createElement('a');
    // Image
    img.src = url;
    img.style.position = 'absolute';
    img.style.left = '0px';
    img.style.top  = (document.body.scrollTop) + 'px';
    img.style.zIndex = '2147483647'; // this is to push it above everything else, so the NG navbar doesn't float over it.
    img.className = 'img_viewer';
    img.draggable = 'false';
    img.dragging = 0;
    img.mousepos = [0,0];
    // Image helper
    img_helper.innerHTML = "Click here to close image";
    img_helper.style.position = 'fixed';
    img_helper.style.left = '0px';
    img_helper.style.top  = '0px';
    img_helper.style.margin = '0';
    img_helper.style.padding = '5px 0';
    img_helper.style.width = '100%';
    img_helper.style.height='50px';
    img_helper.style.background = '#fff';
    img_helper.style.borderBottom = '1px solid #ccc';
    img_helper.style.color = '#000';
    img_helper.style.fontSize = '12px';
    img_helper.style.textAlign = 'center';
    img_helper.style.zIndex = '2147483647'; // The absolute maximum
    img_helper.className = 'img_viewer';
    // Image helper link
    img_helper_link.innerText = 'Direct URL';
    img_helper_link.href = url;
    img_helper_link.target = '_blank';
    img_helper_link.style.margin = '0';
    img_helper_link.style.padding = '0';
    img_helper_link.style.background = '#fff';
    img_helper_link.style.borderBottom = '1px solid #ccc';
    img_helper_link.style.display = 'block';
    img_helper_link.style.width = '100%';
    img_helper_link.style.height = '20px';
    img_helper_link.style.position = 'fixed';
    img_helper_link.style.left = '0';
    img_helper_link.style.top = '50px';
    img_helper_link.style.fontSize = '12px';
    img_helper_link.style.textAlign = 'center';
    img_helper_link.style.zIndex = '2147483647';
    img_helper_link.className = 'img_viewer';
    // append to body
    document.body.appendChild(img_helper);
    document.body.appendChild(img_helper_link);
    document.body.appendChild(img);
    // helper on-click
    img_helper.onclick = function(){
      document.body.removeChild(img);
      document.body.removeChild(img_helper);
      document.body.removeChild(img_helper_link);
    }
    img.onmousedown = function(evt){
      this.dragging = 1;
      this.mousepos[0] = (evt.clientX || evt.pageX);
      this.mousepos[1] = (evt.clientY || evt.pageY);
    }
    img.onmouseup = function(evt){
      this.dragging = 0;
    }
    img.onmousemove = function(evt){ // Hoo boy, that was pretty difficult to figure out
      if(this.dragging){
        lastX = this.mousepos[0];
        curX = (evt.clientX || evt.pageX);
        lastY = this.mousepos[1];
        curY = (evt.clientY || evt.pageY);
        if(!(lastX == curX && lastY == curY)){
          console.log("mouse has moved");
          if(curX > lastX){
            this.style.left = (parseInt(this.style.left) + (curX - lastX)) + 'px';
          }
          if(curX < lastX){
            this.style.left = (parseInt(this.style.left) - (lastX - curX)) + 'px';
          }
          if(curY > lastY){
            this.style.top = (parseInt(this.style.top) + (curY - lastY)) + 'px';
          }
          if(curY < lastY){
            this.style.top = (parseInt(this.style.top) - (lastY - curY)) + 'px';
          }
        }
        this.mousepos[0] = curX;
        this.mousepos[1] = curY;
      }
      return false;
    }
  }

  function clear(){
    var imgs = document.querySelectorAll('.img_viewer');
    if(imgs[0]) {
      for(var i = 0; i < imgs.length; i++){
        document.body.removeChild(imgs[i]);
      }
    } else {
      console.log("No images generated by this script were found");
    }
  }

  var imgs = document.querySelectorAll('img[src]'), i;
  if(imgs[0]){
    for(i = 0; i < imgs.length; i++){
      if(imgs[i].src){
        imgs[i].oncontextmenu = function(){
          push(this.src);
          return false;
        }
      }
    }
  } else {
    console.log("Something has gone wrong!");
  }
  document.body.onkeydown = function(evt){
    if(evt.keyCode == 27){ // Escape key
      clear();
    }
    if(evt.keyCode == 17){ // Ctrl
      //clear();
      initialize(1);
    }
  }
  if(!init){
    console.log("Image Viewer successfully started up!");
    console.log("Try right-clicking an image");
  }else{
    console.log("Queue updated");
  }
})();