project/node_modules/echarts/lib/component/parallel/ParallelView.js

/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements.  See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership.  The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License.  You may obtain a copy of the License at
*
*   http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied.  See the License for the
* specific language governing permissions and limitations
* under the License.
*/


/**
 * AUTO-GENERATED FILE. DO NOT MODIFY.
 */

/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements.  See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership.  The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License.  You may obtain a copy of the License at
*
*   http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied.  See the License for the
* specific language governing permissions and limitations
* under the License.
*/
import { __extends } from "tslib";
import ComponentView from '../../view/Component.js';
import { each, bind, extend } from 'zrender/lib/core/util.js';
import { createOrUpdate, clear } from '../../util/throttle.js';
var CLICK_THRESHOLD = 5; // > 4
var ParallelView = /** @class */function (_super) {
  __extends(ParallelView, _super);
  function ParallelView() {
    var _this = _super !== null && _super.apply(this, arguments) || this;
    _this.type = ParallelView.type;
    return _this;
  }
  ParallelView.prototype.render = function (parallelModel, ecModel, api) {
    this._model = parallelModel;
    this._api = api;
    if (!this._handlers) {
      this._handlers = {};
      each(handlers, function (handler, eventName) {
        api.getZr().on(eventName, this._handlers[eventName] = bind(handler, this));
      }, this);
    }
    createOrUpdate(this, '_throttledDispatchExpand', parallelModel.get('axisExpandRate'), 'fixRate');
  };
  ParallelView.prototype.dispose = function (ecModel, api) {
    clear(this, '_throttledDispatchExpand');
    each(this._handlers, function (handler, eventName) {
      api.getZr().off(eventName, handler);
    });
    this._handlers = null;
  };
  /**
   * @internal
   * @param {Object} [opt] If null, cancel the last action triggering for debounce.
   */
  ParallelView.prototype._throttledDispatchExpand = function (opt) {
    this._dispatchExpand(opt);
  };
  /**
   * @internal
   */
  ParallelView.prototype._dispatchExpand = function (opt) {
    opt && this._api.dispatchAction(extend({
      type: 'parallelAxisExpand'
    }, opt));
  };
  ParallelView.type = 'parallel';
  return ParallelView;
}(ComponentView);
var handlers = {
  mousedown: function (e) {
    if (checkTrigger(this, 'click')) {
      this._mouseDownPoint = [e.offsetX, e.offsetY];
    }
  },
  mouseup: function (e) {
    var mouseDownPoint = this._mouseDownPoint;
    if (checkTrigger(this, 'click') && mouseDownPoint) {
      var point = [e.offsetX, e.offsetY];
      var dist = Math.pow(mouseDownPoint[0] - point[0], 2) + Math.pow(mouseDownPoint[1] - point[1], 2);
      if (dist > CLICK_THRESHOLD) {
        return;
      }
      var result = this._model.coordinateSystem.getSlidedAxisExpandWindow([e.offsetX, e.offsetY]);
      result.behavior !== 'none' && this._dispatchExpand({
        axisExpandWindow: result.axisExpandWindow
      });
    }
    this._mouseDownPoint = null;
  },
  mousemove: function (e) {
    // Should do nothing when brushing.
    if (this._mouseDownPoint || !checkTrigger(this, 'mousemove')) {
      return;
    }
    var model = this._model;
    var result = model.coordinateSystem.getSlidedAxisExpandWindow([e.offsetX, e.offsetY]);
    var behavior = result.behavior;
    behavior === 'jump' && this._throttledDispatchExpand.debounceNextCall(model.get('axisExpandDebounce'));
    this._throttledDispatchExpand(behavior === 'none' ? null // Cancel the last trigger, in case that mouse slide out of the area quickly.
    : {
      axisExpandWindow: result.axisExpandWindow,
      // Jumping uses animation, and sliding suppresses animation.
      animation: behavior === 'jump' ? null : {
        duration: 0 // Disable animation.
      }
    });
  }
};

function checkTrigger(view, triggerOn) {
  var model = view._model;
  return model.get('axisExpandable') && model.get('axisExpandTriggerOn') === triggerOn;
}
export default ParallelView;