Function _imageContain

src/image/loading_displaying.js:726–744

* @private * @param {(LEFT|RIGHT|CENTER)} xAlign either LEFT, RIGHT or CENTER * @param {(TOP|BOTTOM|CENTER)} yAlign either TOP, BOTTOM or CENTER * @param {Number} dx * @param {Number} dy * @param {Number} dw * @param {Number} dh * @param {Number} sw * @param {Number} sh *

(xAlign, yAlign, dx, dy, dw, dh, sw, sh)

   */

  function _imageContain(xAlign, yAlign, dx, dy, dw, dh, sw, sh) {
    const r = Math.max(sw / dw, sh / dh);
    const [adjusted_dw, adjusted_dh] = [sw / r, sh / r];
    let x = dx;
    let y = dy;

    if (xAlign === constants.CENTER) {
      x += (dw - adjusted_dw) / 2;
    } else if (xAlign === constants.RIGHT) {
      x += dw - adjusted_dw;
    }

    if (yAlign === constants.CENTER) {
      y += (dh - adjusted_dh) / 2;
    } else if (yAlign === constants.BOTTOM) {
      y += dh - adjusted_dh;
    }
    return { x, y, w: adjusted_dw, h: adjusted_dh };
  }

  /**
   * @private