// ==UserScript==
// @name canvas screenshot to tga
// @namespace http://bzzzzdzzzz.blogspot.com/
// @description useful for io games like woomy.arras.io (press [:])
// @author BZZZZ
// @include *
// @version 0.6
// @grant none
// @run-at document-start
// @inject-into content
// ==/UserScript==
(function(
blobArr,
blobOpt,
linkTag,
Date,
toISOString,
Blob,
appendChild,
removeChild,
getImageData,
getKey,
ArrayBuffer,
Uint8Array,
createObjectURL,
revokeObjectURL,
setHref,
setDownload,
bodyList,
getData,
getWidth,
getHeight,
getContext,
click,
consoleError,
consoleWarn,
canvasList
){
"use strict";
bodyList.__proto__=null;
canvasList.__proto__=null;
window.addEventListener("keypress",function(evnt){
try{
if(getKey(evnt)!=":")return;
var i=canvasList[0];
if(!i){
consoleError("canvas screenshot to tga: no canvas tag");
return;
}
var w=getWidth(i),h=getHeight(i),raw=getData(getImageData(getContext(i,"2d"),0,0,w,h)),w3=w*3,w4=w*4,end,i2=h*w4,i3,tga=new Uint8Array(blobArr[0]=new ArrayBuffer(18+h*w3));
tga[2]=2;
tga[12]=w&255;
tga[13]=w>>8;
tga[14]=h&255;
tga[15]=h>>8;
tga[16]=24;
i=18;
while(0<i2){
i2-=w4;
end=i+w3;
i3=i2;
while(i<end){
tga[i++]=raw[2+i3];
tga[i++]=raw[1+i3];
tga[i++]=raw[i3];
i3+=4;
}
}
raw=toISOString(new Date());
i2=raw.length;
i=0;
w="shot_";
while(i<i2)w+=((i3=raw[i++])==":")?"_":i3;
w+=".tga";
setDownload(linkTag,w);
tga=createObjectURL(new Blob(blobArr,blobOpt));
setHref(linkTag,tga);
i=bodyList[0];
try{
if(i)appendChild(i,linkTag);
}catch(err){
consoleWarn("canvas screenshot to tga: failed to append a to body:",err);
}
click(linkTag);
try{
if(i)removeChild(i,linkTag);
}catch(err){
consoleWarn("canvas screenshot to tga: failed to remove a from body:",err);
}
revokeObjectURL(tga);
}catch(err){
consoleError("canvas screenshot to tga:",err);
}
},false);
})(
[null],
{"__proto__":null,"type":"image/x-targa"},
document.createElementNS("http://www.w3.org/1999/xhtml","a"),
Date,
Function.prototype.call.bind(Date.prototype.toISOString),
Blob,
Function.prototype.call.bind(Node.prototype.appendChild),
Function.prototype.call.bind(Node.prototype.removeChild),
Function.prototype.call.bind(CanvasRenderingContext2D.prototype.getImageData),
Function.prototype.call.bind(KeyboardEvent.prototype.__lookupGetter__("key")),
ArrayBuffer,
Uint8Array,
URL.createObjectURL,
URL.revokeObjectURL,
Function.prototype.call.bind(HTMLAnchorElement.prototype.__lookupSetter__("href")),
Function.prototype.call.bind(HTMLAnchorElement.prototype.__lookupSetter__("download")),
document.getElementsByTagNameNS("http://www.w3.org/1999/xhtml","body"),
Function.prototype.call.bind(ImageData.prototype.__lookupGetter__("data")),
Function.prototype.call.bind(HTMLCanvasElement.prototype.__lookupGetter__("width")),
Function.prototype.call.bind(HTMLCanvasElement.prototype.__lookupGetter__("height")),
Function.prototype.call.bind(HTMLCanvasElement.prototype.getContext),
Function.prototype.call.bind(HTMLElement.prototype.click),
console.error,
console.warn,
document.getElementsByTagNameNS("http://www.w3.org/1999/xhtml","canvas")
);
