@tiddlygit/tiddlywiki/core/modules/editor/operations/bitmap/rotate-left.js

a non-linear personal web notebook

/*\
title: $:/core/modules/editor/operations/bitmap/rotate-left.js
type: application/javascript
module-type: bitmapeditoroperation

Bitmap editor operation to rotate the image left by 90 degrees

\*/
(function(){

/*jslint node: true, browser: true */
/*global $tw: false */
"use strict";

exports["rotate-left"] = function(event) {
	// Rotate the canvas left by 90 degrees
	this.rotateCanvasLeft();
	// Update the input controls
	this.refreshToolbar();
	// Save the image into the tiddler
	this.saveChanges();
};

})();