☰

Image Viewer

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

当前为 2014-05-04 提交的版本，查看 最新版本。

  1. // ==UserScript==
  2. // @name       Image Viewer
  3. // @namespace  https://gist.github.com/bradenbest/04bd0fc2d57ec650449f
  4. // @version    1.5.0
  5. // @description  inject this script into any page, and RIGHT-CLICK on the image you want to view full-size
  6. // @copyright  2014 - present, Braden Best
  7. // ==/UserScript==
  8.  
  9. (function initialize(init){
  10.   var init = init || 0;
  11.   function push(url){
  12.     var img = document.createElement('img'),
  13.         img_helper = document.createElement('div'),
  14.         img_helper_link = document.createElement('a');
  15.     // Image
  16.     img.src = url;
  17.     img.style.position = 'absolute';
  18.     img.style.left = '0px';
  19.     img.style.top  = (document.body.scrollTop) + 'px';
  20.     img.style.zIndex = '2147483647'; // this is to push it above everything else, so the NG navbar doesn't float over it.
  21.     img.className = 'img_viewer';
  22.     img.draggable = 'false';
  23.     img.dragging = 0;
  24.     img.mousepos = [0,0];
  25.     img.tabIndex = 0;
  26.     // Image helper
  27.     img_helper.innerHTML = "Click here to close image";
  28.     img_helper.style.position = 'fixed';
  29.     img_helper.style.left = '0px';
  30.     img_helper.style.top  = '0px';
  31.     img_helper.style.margin = '0';
  32.     img_helper.style.padding = '5px 0';
  33.     img_helper.style.width = '100%';
  34.     img_helper.style.height='50px';
  35.     img_helper.style.background = '#fff';
  36.     img_helper.style.borderBottom = '1px solid #ccc';
  37.     img_helper.style.color = '#000';
  38.     img_helper.style.fontSize = '12px';
  39.     img_helper.style.textAlign = 'center';
  40.     img_helper.style.zIndex = '2147483647'; // The absolute maximum
  41.     img_helper.className = 'img_viewer';
  42.     // Image helper link
  43.     img_helper_link.innerText = 'Direct URL';
  44.     img_helper_link.href = url;
  45.     img_helper_link.target = '_blank';
  46.     img_helper_link.style.margin = '0';
  47.     img_helper_link.style.padding = '0';
  48.     img_helper_link.style.background = '#fff';
  49.     img_helper_link.style.borderBottom = '1px solid #ccc';
  50.     img_helper_link.style.display = 'block';
  51.     img_helper_link.style.width = '100%';
  52.     img_helper_link.style.height = '20px';
  53.     img_helper_link.style.position = 'fixed';
  54.     img_helper_link.style.left = '0';
  55.     img_helper_link.style.top = '50px';
  56.     img_helper_link.style.fontSize = '12px';
  57.     img_helper_link.style.textAlign = 'center';
  58.     img_helper_link.style.zIndex = '2147483647';
  59.     img_helper_link.className = 'img_viewer';
  60.     // append to body
  61.     document.body.appendChild(img_helper);
  62.     document.body.appendChild(img_helper_link);
  63.     document.body.appendChild(img);
  64.     // helper on-click
  65.     img_helper.onclick = function(){
  66.       document.body.removeChild(img);
  67.       document.body.removeChild(img_helper);
  68.       document.body.removeChild(img_helper_link);
  69.     }
  70.     img.onmousedown = function(evt){
  71.       this.dragging = 1;
  72.       this.mousepos[0] = (evt.clientX || evt.pageX);
  73.       this.mousepos[1] = (evt.clientY || evt.pageY);
  74.     }
  75.     img.onmouseup = function(evt){
  76.       this.dragging = 0;
  77.     }
  78.     img.onmousemove = function(evt){ // Hoo boy, that was pretty difficult to figure out
  79.       if(this.dragging){
  80.         lastX = this.mousepos[0];
  81.         curX = (evt.clientX || evt.pageX);
  82.         lastY = this.mousepos[1];
  83.         curY = (evt.clientY || evt.pageY);
  84.         if(!(lastX == curX && lastY == curY)){
  85.           console.log("mouse has moved");
  86.           if(curX > lastX){
  87.             this.style.left = (parseInt(this.style.left) + (curX - lastX)) + 'px';
  88.           }
  89.           if(curX < lastX){
  90.             this.style.left = (parseInt(this.style.left) - (lastX - curX)) + 'px';
  91.           }
  92.           if(curY > lastY){
  93.             this.style.top = (parseInt(this.style.top) + (curY - lastY)) + 'px';
  94.           }
  95.           if(curY < lastY){
  96.             this.style.top = (parseInt(this.style.top) - (lastY - curY)) + 'px';
  97.           }
  98.         }
  99.         this.mousepos[0] = curX;
  100.         this.mousepos[1] = curY;
  101.       }
  102.       return false;
  103.     }
  104.     img.onkeydown = function(evt){
  105.       var temp_width;
  106.       if(evt.keyCode == 38) { // Up
  107.         temp_width = parseInt(this.width) + 10;
  108.         this.width = temp_width;
  109.       } else if(evt.keyCode == 40) { // Down
  110.         temp_width = parseInt(this.width) - 10;
  111.         this.width = temp_width;
  112.       } else {
  113.         console.log("Key: " + evt.keyCode);
  114.       }
  115.       return false;
  116.     }
  117.   }
  118.  
  119.   function clear(){
  120.     var imgs = document.querySelectorAll('.img_viewer');
  121.     if(imgs[0]) {
  122.       for(var i = 0; i < imgs.length; i++){
  123.         document.body.removeChild(imgs[i]);
  124.       }
  125.     } else {
  126.       console.log("No images generated by this script were found");
  127.     }
  128.   }
  129.  
  130.   var imgs = document.querySelectorAll('img[src]'), i;
  131.   if(imgs[0]){
  132.     for(i = 0; i < imgs.length; i++){
  133.       if(imgs[i].src){
  134.         imgs[i].oncontextmenu = function(){
  135.           push(this.src);
  136.           return false;
  137.         }
  138.       }
  139.     }
  140.   } else {
  141.     console.log("Something has gone wrong!");
  142.   }
  143.   document.body.onkeydown = function(evt){
  144.     if(evt.keyCode == 27){ // Escape key
  145.       clear();
  146.     }
  147.     if(evt.keyCode == 17){ // Ctrl
  148.       //clear();
  149.       initialize(1);
  150.     }
  151.   }
  152.   if(!init){
  153.     console.log("Image Viewer successfully started up!");
  154.     console.log("Try right-clicking an image");
  155.   }else{
  156.     console.log("Queue updated");
  157.   }
  158. })();