/**
 * QCObjects SDK 2.4
 * ________________
 *
 * Author: Jean Machuca <correojean@gmail.com>
 *
 * Cross Browser Javascript Framework for MVC Patterns
 * QuickCorp/QCObjects is licensed under the
 * GNU Lesser General Public License v3.0
 * [LICENSE] (https://github.com/QuickCorp/QCObjects/blob/master/LICENSE.txt)
 *
 * Permissions of this copyleft license are conditioned on making available
 * complete source code of licensed works and modifications under the same
 * license or the GNU GPLv3. Copyright and license notices must be preserved.
 * Contributors provide an express grant of patent rights. However, a larger
 * work using the licensed work through interfaces provided by the licensed
 * work may be distributed under different terms and without source code for
 * the larger work.
 *
 * Copyright (C) 2015 Jean Machuca,<correojean@gmail.com>
 *
 * Everyone is permitted to copy and distribute verbatim copies of this
 * license document, but changing it is not allowed.
*/
"use strict";

import { Package, InheritClass } from "qcobjects";

(function() {
  Package("org.qcobjects.tools.canvas",[

    class CanvasTool extends InheritClass {

      drawImageFilled (img:HTMLImageElement, canvas:HTMLCanvasElement, zoom=1, px=0, py=0){
        // get the scale
        let scale = Math.max(canvas.width / img.width, canvas.height / img.height);
        scale = scale*zoom;
        // get the top left position of the image
        const x = (canvas.width / 2) - (img.width / 2) * scale;
        const y = (canvas.height / 2) - (img.height / 2) * scale;
        const ctx = canvas.getContext("2d");
        ctx?.drawImage(img, (px+x), (py+y), img.width * scale, img.height * scale);
      }

      getImageResized (img:HTMLImageElement, width:number, height:number, resizedImage:HTMLImageElement, zoom=1, px=0, py=0){
        const canvas = document.createElement("canvas");
        canvas.width = width;
        canvas.height = height;
        canvas.style.width = width.toString();
        canvas.style.height = height.toString();
        this.drawImageFilled(img,canvas,zoom,px,py);
        resizedImage.src = canvas.toDataURL("image/png");
        return canvas;
      }

    }
  ]);

})();