MapView.js
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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 echarts from '../../echarts';
import * as zrUtil from 'zrender/src/core/util';
import * as graphic from '../../util/graphic';
import MapDraw from '../../component/helper/MapDraw';
export default echarts.extendChartView({
type: 'map',
render: function (mapModel, ecModel, api, payload) {
// Not render if it is an toggleSelect action from self
if (payload && payload.type === 'mapToggleSelect'
&& payload.from === this.uid
) {
return;
}
var group = this.group;
group.removeAll();
if (mapModel.getHostGeoModel()) {
return;
}
// Not update map if it is an roam action from self
if (!(payload && payload.type === 'geoRoam'
&& payload.componentType === 'series'
&& payload.seriesId === mapModel.id
)
) {
if (mapModel.needsDrawMap) {
var mapDraw = this._mapDraw || new MapDraw(api, true);
group.add(mapDraw.group);
mapDraw.draw(mapModel, ecModel, api, this, payload);
this._mapDraw = mapDraw;
}
else {
// Remove drawed map
this._mapDraw && this._mapDraw.remove();
this._mapDraw = null;
}
}
else {
var mapDraw = this._mapDraw;
mapDraw && group.add(mapDraw.group);
}
mapModel.get('showLegendSymbol') && ecModel.getComponent('legend')
&& this._renderSymbols(mapModel, ecModel, api);
},
remove: function () {
this._mapDraw && this._mapDraw.remove();
this._mapDraw = null;
this.group.removeAll();
},
dispose: function () {
this._mapDraw && this._mapDraw.remove();
this._mapDraw = null;
},
_renderSymbols: function (mapModel, ecModel, api) {
var originalData = mapModel.originalData;
var group = this.group;
originalData.each(originalData.mapDimension('value'), function (value, idx) {
if (isNaN(value)) {
return;
}
var layout = originalData.getItemLayout(idx);
if (!layout || !layout.point) {
// Not exists in map
return;
}
var point = layout.point;
var offset = layout.offset;
var circle = new graphic.Circle({
style: {
// Because the special of map draw.
// Which needs statistic of multiple series and draw on one map.
// And each series also need a symbol with legend color
//
// Layout and visual are put one the different data
fill: mapModel.getData().getVisual('color')
},
shape: {
cx: point[0] + offset * 9,
cy: point[1],
r: 3
},
silent: true,
// Do not overlap the first series, on which labels are displayed.
z2: !offset ? 10 : 8
});
// First data on the same region
if (!offset) {
var fullData = mapModel.mainSeries.getData();
var name = originalData.getName(idx);
var fullIndex = fullData.indexOfName(name);
var itemModel = originalData.getItemModel(idx);
var labelModel = itemModel.getModel('label');
var hoverLabelModel = itemModel.getModel('emphasis.label');
var polygonGroups = fullData.getItemGraphicEl(fullIndex);
var normalText = zrUtil.retrieve2(
mapModel.getFormattedLabel(idx, 'normal'),
name
);
var emphasisText = zrUtil.retrieve2(
mapModel.getFormattedLabel(idx, 'emphasis'),
normalText
);
var onEmphasis = function () {
var hoverStyle = graphic.setTextStyle({}, hoverLabelModel, {
text: hoverLabelModel.get('show') ? emphasisText : null
}, {isRectText: true, useInsideStyle: false}, true);
circle.style.extendFrom(hoverStyle);
// Make label upper than others if overlaps.
circle.__mapOriginalZ2 = circle.z2;
circle.z2 += 1;
};
var onNormal = function () {
graphic.setTextStyle(circle.style, labelModel, {
text: labelModel.get('show') ? normalText : null,
textPosition: labelModel.getShallow('position') || 'bottom'
}, {isRectText: true, useInsideStyle: false});
if (circle.__mapOriginalZ2 != null) {
circle.z2 = circle.__mapOriginalZ2;
circle.__mapOriginalZ2 = null;
}
};
polygonGroups.on('mouseover', onEmphasis)
.on('mouseout', onNormal)
.on('emphasis', onEmphasis)
.on('normal', onNormal);
onNormal();
}
group.add(circle);
});
}
});