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node_modules/echarts/extension/bmap/BMapView.js 3.95 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.
  */
  
  var echarts = require("echarts");
  
  /*
  * 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.
  */
  var _default = echarts.extendComponentView({
    type: 'bmap',
    render: function (bMapModel, ecModel, api) {
      var rendering = true;
      var bmap = bMapModel.getBMap();
      var viewportRoot = api.getZr().painter.getViewportRoot();
      var coordSys = bMapModel.coordinateSystem;
  
      var moveHandler = function (type, target) {
        if (rendering) {
          return;
        }
  
        var offsetEl = viewportRoot.parentNode.parentNode.parentNode;
        var mapOffset = [-parseInt(offsetEl.style.left, 10) || 0, -parseInt(offsetEl.style.top, 10) || 0];
        viewportRoot.style.left = mapOffset[0] + 'px';
        viewportRoot.style.top = mapOffset[1] + 'px';
        coordSys.setMapOffset(mapOffset);
        bMapModel.__mapOffset = mapOffset;
        api.dispatchAction({
          type: 'bmapRoam'
        });
      };
  
      function zoomEndHandler() {
        if (rendering) {
          return;
        }
  
        api.dispatchAction({
          type: 'bmapRoam'
        });
      }
  
      bmap.removeEventListener('moving', this._oldMoveHandler); // FIXME
      // Moveend may be triggered by centerAndZoom method when creating coordSys next time
      // bmap.removeEventListener('moveend', this._oldMoveHandler);
  
      bmap.removeEventListener('zoomend', this._oldZoomEndHandler);
      bmap.addEventListener('moving', moveHandler); // bmap.addEventListener('moveend', moveHandler);
  
      bmap.addEventListener('zoomend', zoomEndHandler);
      this._oldMoveHandler = moveHandler;
      this._oldZoomEndHandler = zoomEndHandler;
      var roam = bMapModel.get('roam');
  
      if (roam && roam !== 'scale') {
        bmap.enableDragging();
      } else {
        bmap.disableDragging();
      }
  
      if (roam && roam !== 'move') {
        bmap.enableScrollWheelZoom();
        bmap.enableDoubleClickZoom();
        bmap.enablePinchToZoom();
      } else {
        bmap.disableScrollWheelZoom();
        bmap.disableDoubleClickZoom();
        bmap.disablePinchToZoom();
      }
  
      var originalStyle = bMapModel.__mapStyle;
      var newMapStyle = bMapModel.get('mapStyle') || {}; // FIXME, Not use JSON methods
  
      var mapStyleStr = JSON.stringify(newMapStyle);
  
      if (JSON.stringify(originalStyle) !== mapStyleStr) {
        // FIXME May have blank tile when dragging if setMapStyle
        if (Object.keys(newMapStyle).length) {
          bmap.setMapStyle(newMapStyle);
        }
  
        bMapModel.__mapStyle = JSON.parse(mapStyleStr);
      }
  
      rendering = false;
    }
  });
  
  module.exports = _default;