ThemeRiverView.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.
*/
var echarts = require("../../echarts");
var _poly = require("../line/poly");
var Polygon = _poly.Polygon;
var graphic = require("../../util/graphic");
var _util = require("zrender/lib/core/util");
var bind = _util.bind;
var extend = _util.extend;
var DataDiffer = require("../../data/DataDiffer");
/*
* 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.
*/
/**
* @file The file used to draw themeRiver view
* @author Deqing Li(annong035@gmail.com)
*/
var _default = echarts.extendChartView({
type: 'themeRiver',
init: function () {
this._layers = [];
},
render: function (seriesModel, ecModel, api) {
var data = seriesModel.getData();
var group = this.group;
var layerSeries = seriesModel.getLayerSeries();
var layoutInfo = data.getLayout('layoutInfo');
var rect = layoutInfo.rect;
var boundaryGap = layoutInfo.boundaryGap;
group.attr('position', [0, rect.y + boundaryGap[0]]);
function keyGetter(item) {
return item.name;
}
var dataDiffer = new DataDiffer(this._layersSeries || [], layerSeries, keyGetter, keyGetter);
var newLayersGroups = {};
dataDiffer.add(bind(process, this, 'add')).update(bind(process, this, 'update')).remove(bind(process, this, 'remove')).execute();
function process(status, idx, oldIdx) {
var oldLayersGroups = this._layers;
if (status === 'remove') {
group.remove(oldLayersGroups[idx]);
return;
}
var points0 = [];
var points1 = [];
var color;
var indices = layerSeries[idx].indices;
for (var j = 0; j < indices.length; j++) {
var layout = data.getItemLayout(indices[j]);
var x = layout.x;
var y0 = layout.y0;
var y = layout.y;
points0.push([x, y0]);
points1.push([x, y0 + y]);
color = data.getItemVisual(indices[j], 'color');
}
var polygon;
var text;
var textLayout = data.getItemLayout(indices[0]);
var itemModel = data.getItemModel(indices[j - 1]);
var labelModel = itemModel.getModel('label');
var margin = labelModel.get('margin');
if (status === 'add') {
var layerGroup = newLayersGroups[idx] = new graphic.Group();
polygon = new Polygon({
shape: {
points: points0,
stackedOnPoints: points1,
smooth: 0.4,
stackedOnSmooth: 0.4,
smoothConstraint: false
},
z2: 0
});
text = new graphic.Text({
style: {
x: textLayout.x - margin,
y: textLayout.y0 + textLayout.y / 2
}
});
layerGroup.add(polygon);
layerGroup.add(text);
group.add(layerGroup);
polygon.setClipPath(createGridClipShape(polygon.getBoundingRect(), seriesModel, function () {
polygon.removeClipPath();
}));
} else {
var layerGroup = oldLayersGroups[oldIdx];
polygon = layerGroup.childAt(0);
text = layerGroup.childAt(1);
group.add(layerGroup);
newLayersGroups[idx] = layerGroup;
graphic.updateProps(polygon, {
shape: {
points: points0,
stackedOnPoints: points1
}
}, seriesModel);
graphic.updateProps(text, {
style: {
x: textLayout.x - margin,
y: textLayout.y0 + textLayout.y / 2
}
}, seriesModel);
}
var hoverItemStyleModel = itemModel.getModel('emphasis.itemStyle');
var itemStyleModel = itemModel.getModel('itemStyle');
graphic.setTextStyle(text.style, labelModel, {
text: labelModel.get('show') ? seriesModel.getFormattedLabel(indices[j - 1], 'normal') || data.getName(indices[j - 1]) : null,
textVerticalAlign: 'middle'
});
polygon.setStyle(extend({
fill: color
}, itemStyleModel.getItemStyle(['color'])));
graphic.setHoverStyle(polygon, hoverItemStyleModel.getItemStyle());
}
this._layersSeries = layerSeries;
this._layers = newLayersGroups;
},
dispose: function () {}
}); // add animation to the view
function createGridClipShape(rect, seriesModel, cb) {
var rectEl = new graphic.Rect({
shape: {
x: rect.x - 10,
y: rect.y - 10,
width: 0,
height: rect.height + 20
}
});
graphic.initProps(rectEl, {
shape: {
width: rect.width + 20,
height: rect.height + 20
}
}, seriesModel, cb);
return rectEl;
}
module.exports = _default;