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node_modules/echarts/src/loading/default.js 2.97 KB
aaac7fed   liuqimichale   add
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  /*
  * 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 * as zrUtil from 'zrender/src/core/util';
  import * as graphic from '../util/graphic';
  
  var PI = Math.PI;
  
  /**
   * @param {module:echarts/ExtensionAPI} api
   * @param {Object} [opts]
   * @param {string} [opts.text]
   * @param {string} [opts.color]
   * @param {string} [opts.textColor]
   * @return {module:zrender/Element}
   */
  export default function (api, opts) {
      opts = opts || {};
      zrUtil.defaults(opts, {
          text: 'loading',
          color: '#c23531',
          textColor: '#000',
          maskColor: 'rgba(255, 255, 255, 0.8)',
          zlevel: 0
      });
      var mask = new graphic.Rect({
          style: {
              fill: opts.maskColor
          },
          zlevel: opts.zlevel,
          z: 10000
      });
      var arc = new graphic.Arc({
          shape: {
              startAngle: -PI / 2,
              endAngle: -PI / 2 + 0.1,
              r: 10
          },
          style: {
              stroke: opts.color,
              lineCap: 'round',
              lineWidth: 5
          },
          zlevel: opts.zlevel,
          z: 10001
      });
      var labelRect = new graphic.Rect({
          style: {
              fill: 'none',
              text: opts.text,
              textPosition: 'right',
              textDistance: 10,
              textFill: opts.textColor
          },
          zlevel: opts.zlevel,
          z: 10001
      });
  
      arc.animateShape(true)
          .when(1000, {
              endAngle: PI * 3 / 2
          })
          .start('circularInOut');
      arc.animateShape(true)
          .when(1000, {
              startAngle: PI * 3 / 2
          })
          .delay(300)
          .start('circularInOut');
  
      var group = new graphic.Group();
      group.add(arc);
      group.add(labelRect);
      group.add(mask);
      // Inject resize
      group.resize = function () {
          var cx = api.getWidth() / 2;
          var cy = api.getHeight() / 2;
          arc.setShape({
              cx: cx,
              cy: cy
          });
          var r = arc.shape.r;
          labelRect.setShape({
              x: cx - r,
              y: cy - r,
              width: r * 2,
              height: r * 2
          });
  
          mask.setShape({
              x: 0,
              y: 0,
              width: api.getWidth(),
              height: api.getHeight()
          });
      };
      group.resize();
      return group;
  }