VisualMapView.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 * as formatUtil from '../../util/format';
import * as layout from '../../util/layout';
import VisualMapping from '../../visual/VisualMapping';
export default echarts.extendComponentView({
type: 'visualMap',
/**
* @readOnly
* @type {Object}
*/
autoPositionValues: {left: 1, right: 1, top: 1, bottom: 1},
init: function (ecModel, api) {
/**
* @readOnly
* @type {module:echarts/model/Global}
*/
this.ecModel = ecModel;
/**
* @readOnly
* @type {module:echarts/ExtensionAPI}
*/
this.api = api;
/**
* @readOnly
* @type {module:echarts/component/visualMap/visualMapModel}
*/
this.visualMapModel;
},
/**
* @protected
*/
render: function (visualMapModel, ecModel, api, payload) {
this.visualMapModel = visualMapModel;
if (visualMapModel.get('show') === false) {
this.group.removeAll();
return;
}
this.doRender.apply(this, arguments);
},
/**
* @protected
*/
renderBackground: function (group) {
var visualMapModel = this.visualMapModel;
var padding = formatUtil.normalizeCssArray(visualMapModel.get('padding') || 0);
var rect = group.getBoundingRect();
group.add(new graphic.Rect({
z2: -1, // Lay background rect on the lowest layer.
silent: true,
shape: {
x: rect.x - padding[3],
y: rect.y - padding[0],
width: rect.width + padding[3] + padding[1],
height: rect.height + padding[0] + padding[2]
},
style: {
fill: visualMapModel.get('backgroundColor'),
stroke: visualMapModel.get('borderColor'),
lineWidth: visualMapModel.get('borderWidth')
}
}));
},
/**
* @protected
* @param {number} targetValue can be Infinity or -Infinity
* @param {string=} visualCluster Only can be 'color' 'opacity' 'symbol' 'symbolSize'
* @param {Object} [opts]
* @param {string=} [opts.forceState] Specify state, instead of using getValueState method.
* @param {string=} [opts.convertOpacityToAlpha=false] For color gradient in controller widget.
* @return {*} Visual value.
*/
getControllerVisual: function (targetValue, visualCluster, opts) {
opts = opts || {};
var forceState = opts.forceState;
var visualMapModel = this.visualMapModel;
var visualObj = {};
// Default values.
if (visualCluster === 'symbol') {
visualObj.symbol = visualMapModel.get('itemSymbol');
}
if (visualCluster === 'color') {
var defaultColor = visualMapModel.get('contentColor');
visualObj.color = defaultColor;
}
function getter(key) {
return visualObj[key];
}
function setter(key, value) {
visualObj[key] = value;
}
var mappings = visualMapModel.controllerVisuals[
forceState || visualMapModel.getValueState(targetValue)
];
var visualTypes = VisualMapping.prepareVisualTypes(mappings);
zrUtil.each(visualTypes, function (type) {
var visualMapping = mappings[type];
if (opts.convertOpacityToAlpha && type === 'opacity') {
type = 'colorAlpha';
visualMapping = mappings.__alphaForOpacity;
}
if (VisualMapping.dependsOn(type, visualCluster)) {
visualMapping && visualMapping.applyVisual(
targetValue, getter, setter
);
}
});
return visualObj[visualCluster];
},
/**
* @protected
*/
positionGroup: function (group) {
var model = this.visualMapModel;
var api = this.api;
layout.positionElement(
group,
model.getBoxLayoutParams(),
{width: api.getWidth(), height: api.getHeight()}
);
},
/**
* @protected
* @abstract
*/
doRender: zrUtil.noop
});