general util.js

1 files changed, 38 insertions, 0 deletions

diff --git a/js/util.js b/js/util.js
index 9dc306c..fc27166 100644
--- a/js/util.js
+++ b/js/util.js
@@ -1,3 +1,41 @@
 $.fn.int = function(){ return parseInt($(this).val(),10) }
 $.fn.float = function(){ return parseFloat($(this).val()) }
 function clamp(n,a,b){ return n<a?a:n<b?n:b }
+
+function loadImage(imageURL, callback) {
+  document.getElementById("save").style.display = "none"
+  document.getElementById("encode").style.display = "none"
+  status("loading")
+  var imageURL = proxify( imageURL );
+
+  window.gif = window.img = null
+
+  if (imageURL.substr(-3) === "gif") {
+    window.gif = GIF(imageURL);
+    // gif.on("error", tryToLoadNextImage);
+    // gif.on("rendered", trackLoadTime);
+    gif.on("rendered", callback);
+    return gif.render();
+  } else {
+    window.img = new Image();
+    // img.addEventListener("error", tryToLoadNextImage);
+    img.addEventListener("load", callback);
+    img.crossOrigin = "anonymous";
+    return img.src = imageURL;
+  }
+}
+
+function giveImage() {
+  if (imageURL.substr(-3) === "gif") {
+    return gif.frames[gif.currentFrame()].ctx.canvas;
+  } else {
+    return img;
+  }
+}
+
+function proxify (url) {
+  if (url.indexOf("http") == 0)
+    return "/cgi-bin/proxy?" + url // .replace(/^https?:\/\//, "");
+  else
+    return url
+};