RepositorySys/wwwroot/cropperjs-main/src/js/change.js

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import {
  ACTION_ALL,
  ACTION_CROP,
  ACTION_EAST,
  ACTION_MOVE,
  ACTION_NORTH,
  ACTION_NORTH_EAST,
  ACTION_NORTH_WEST,
  ACTION_SOUTH,
  ACTION_SOUTH_EAST,
  ACTION_SOUTH_WEST,
  ACTION_WEST,
  ACTION_ZOOM,
  CLASS_HIDDEN,
} from './constants';
import {
  forEach,
  getMaxZoomRatio,
  getOffset,
  removeClass,
} from './utilities';

export default {
  change(event) {
    const {
      options,
      canvasData,
      containerData,
      cropBoxData,
      pointers,
    } = this;
    let { action } = this;
    let { aspectRatio } = options;
    let {
      left,
      top,
      width,
      height,
    } = cropBoxData;
    const right = left + width;
    const bottom = top + height;
    let minLeft = 0;
    let minTop = 0;
    let maxWidth = containerData.width;
    let maxHeight = containerData.height;
    let renderable = true;
    let offset;

    // Locking aspect ratio in "free mode" by holding shift key
    if (!aspectRatio && event.shiftKey) {
      aspectRatio = width && height ? width / height : 1;
    }

    if (this.limited) {
      ({ minLeft, minTop } = cropBoxData);
      maxWidth = minLeft + Math.min(
        containerData.width,
        canvasData.width,
        canvasData.left + canvasData.width,
      );