undo and redo adding new cropper library as it had a .git config from the original project

library/cropperjs/src/js/handlers.js

@@ -0,0 +1,212 @@
+import {
+  ACTION_CROP,
+  ACTION_ZOOM,
+  CLASS_CROP,
+  CLASS_MODAL,
+  DATA_ACTION,
+  DRAG_MODE_CROP,
+  DRAG_MODE_MOVE,
+  DRAG_MODE_NONE,
+  EVENT_CROP_END,
+  EVENT_CROP_MOVE,
+  EVENT_CROP_START,
+  REGEXP_ACTIONS,
+} from './constants';
+import {
+  addClass,
+  dispatchEvent,
+  each,
+  extend,
+  getData,
+  getPointer,
+  hasClass,
+  toggleClass,
+} from './utilities';
+
+export default {
+  resize() {
+    const { options, container, containerData } = this;
+    const minContainerWidth = Number(options.minContainerWidth) || 200;
+    const minContainerHeight = Number(options.minContainerHeight) || 100;
+
+    if (this.disabled || containerData.width <= minContainerWidth ||
+      containerData.height <= minContainerHeight) {
+      return;
+    }
+
+    const ratio = container.offsetWidth / containerData.width;
+
+    // Resize when width changed or height changed
+    if (ratio !== 1 || container.offsetHeight !== containerData.height) {
+      let canvasData;
+      let cropBoxData;
+
+      if (options.restore) {
+        canvasData = this.getCanvasData();
+        cropBoxData = this.getCropBoxData();
+      }
+
+      this.render();
+
+      if (options.restore) {
+        this.setCanvasData(each(canvasData, (n, i) => {
+          canvasData[i] = n * ratio;
+        }));
+        this.setCropBoxData(each(cropBoxData, (n, i) => {
+          cropBoxData[i] = n * ratio;
+        }));
+      }
+    }
+  },
+
+  dblclick() {
+    if (this.disabled || this.options.dragMode === DRAG_MODE_NONE) {
+      return;
+    }
+
+    this.setDragMode(hasClass(this.dragBox, CLASS_CROP) ? DRAG_MODE_MOVE : DRAG_MODE_CROP);
+  },
+
+  wheel(e) {
+    const ratio = Number(this.options.wheelZoomRatio) || 0.1;
+    let delta = 1;
+
+    if (this.disabled) {
+      return;
+    }
+
+    e.preventDefault();
+
+    // Limit wheel speed to prevent zoom too fast (#21)
+    if (this.wheeling) {
+      return;
+    }
+
+    this.wheeling = true;
+
+    setTimeout(() => {
+      this.wheeling = false;
+    }, 50);
+
+    if (e.deltaY) {
+      delta = e.deltaY > 0 ? 1 : -1;
+    } else if (e.wheelDelta) {
+      delta = -e.wheelDelta / 120;
+    } else if (e.detail) {
+      delta = e.detail > 0 ? 1 : -1;
+    }
+
+    this.zoom(-delta * ratio, e);
+  },
+
+  cropStart(e) {
+    if (this.disabled) {
+      return;
+    }
+
+    const { options, pointers } = this;
+    let action;
+
+    if (e.changedTouches) {
+      // Handle touch event
+      each(e.changedTouches, (touch) => {
+        pointers[touch.identifier] = getPointer(touch);
+      });
+    } else {
+      // Handle mouse event and pointer event
+      pointers[e.pointerId || 0] = getPointer(e);
+    }
+
+    if (Object.keys(pointers).length > 1 && options.zoomable && options.zoomOnTouch) {
+      action = ACTION_ZOOM;
+    } else {
+      action = getData(e.target, DATA_ACTION);
+    }
+
+    if (!REGEXP_ACTIONS.test(action)) {
+      return;
+    }
+
+    if (dispatchEvent(this.element, EVENT_CROP_START, {
+      originalEvent: e,
+      action,
+    }) === false) {
+      return;
+    }
+
+    e.preventDefault();
+
+    this.action = action;
+    this.cropping = false;
+
+    if (action === ACTION_CROP) {
+      this.cropping = true;
+      addClass(this.dragBox, CLASS_MODAL);
+    }
+  },
+
+  cropMove(e) {
+    const { action } = this;
+
+    if (this.disabled || !action) {
+      return;
+    }
+
+    const { pointers } = this;
+
+    e.preventDefault();
+
+    if (dispatchEvent(this.element, EVENT_CROP_MOVE, {
+      originalEvent: e,
+      action,
+    }) === false) {
+      return;
+    }
+
+    if (e.changedTouches) {
+      each(e.changedTouches, (touch) => {
+        extend(pointers[touch.identifier], getPointer(touch, true));
+      });
+    } else {
+      extend(pointers[e.pointerId || 0], getPointer(e, true));
+    }
+
+    this.change(e);
+  },
+
+  cropEnd(e) {
+    if (this.disabled) {
+      return;
+    }
+
+    const { action, pointers } = this;
+
+    if (e.changedTouches) {
+      each(e.changedTouches, (touch) => {
+        delete pointers[touch.identifier];
+      });
+    } else {
+      delete pointers[e.pointerId || 0];
+    }
+
+    if (!action) {
+      return;
+    }
+
+    e.preventDefault();
+
+    if (!Object.keys(pointers).length) {
+      this.action = '';
+    }
+
+    if (this.cropping) {
+      this.cropping = false;
+      toggleClass(this.dragBox, CLASS_MODAL, this.cropped && this.options.modal);
+    }
+
+    dispatchEvent(this.element, EVENT_CROP_END, {
+      originalEvent: e,
+      action,
+    });
+  },
+};