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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 VisualMapModel from './VisualMapModel';
import * as numberUtil from '../../util/number';
// Constant
var DEFAULT_BAR_BOUND = [20, 140];
var ContinuousModel = VisualMapModel.extend({
type: 'visualMap.continuous',
/**
* @protected
*/
defaultOption: {
align: 'auto', // 'auto', 'left', 'right', 'top', 'bottom'
calculable: false, // This prop effect default component type determine,
// See echarts/component/visualMap/typeDefaulter.
range: null, // selected range. In default case `range` is [min, max]
// and can auto change along with modification of min max,
// util use specifid a range.
realtime: true, // Whether realtime update.
itemHeight: null, // The length of the range control edge.
itemWidth: null, // The length of the other side.
hoverLink: true, // Enable hover highlight.
hoverLinkDataSize: null, // The size of hovered data.
hoverLinkOnHandle: null // Whether trigger hoverLink when hover handle.
// If not specified, follow the value of `realtime`.
},
/**
* @override
*/
optionUpdated: function (newOption, isInit) {
ContinuousModel.superApply(this, 'optionUpdated', arguments);
this.resetExtent();
this.resetVisual(function (mappingOption) {
mappingOption.mappingMethod = 'linear';
mappingOption.dataExtent = this.getExtent();
});
this._resetRange();
},
/**
* @protected
* @override
*/
resetItemSize: function () {
ContinuousModel.superApply(this, 'resetItemSize', arguments);
var itemSize = this.itemSize;
this._orient === 'horizontal' && itemSize.reverse();
(itemSize[0] == null || isNaN(itemSize[0])) && (itemSize[0] = DEFAULT_BAR_BOUND[0]);
(itemSize[1] == null || isNaN(itemSize[1])) && (itemSize[1] = DEFAULT_BAR_BOUND[1]);
},
/**
* @private
*/
_resetRange: function () {
var dataExtent = this.getExtent();
var range = this.option.range;
if (!range || range.auto) {
// `range` should always be array (so we dont use other
// value like 'auto') for user-friend. (consider getOption).
dataExtent.auto = 1;
this.option.range = dataExtent;
}
else if (zrUtil.isArray(range)) {
if (range[0] > range[1]) {
range.reverse();
}
range[0] = Math.max(range[0], dataExtent[0]);
range[1] = Math.min(range[1], dataExtent[1]);
}
},
/**
* @protected
* @override
*/
completeVisualOption: function () {
VisualMapModel.prototype.completeVisualOption.apply(this, arguments);
zrUtil.each(this.stateList, function (state) {
var symbolSize = this.option.controller[state].symbolSize;
if (symbolSize && symbolSize[0] !== symbolSize[1]) {
symbolSize[0] = 0; // For good looking.
}
}, this);
},
/**
* @override
*/
setSelected: function (selected) {
this.option.range = selected.slice();
this._resetRange();
},
/**
* @public
*/
getSelected: function () {
var dataExtent = this.getExtent();
var dataInterval = numberUtil.asc(
(this.get('range') || []).slice()
);
// Clamp
dataInterval[0] > dataExtent[1] && (dataInterval[0] = dataExtent[1]);
dataInterval[1] > dataExtent[1] && (dataInterval[1] = dataExtent[1]);
dataInterval[0] < dataExtent[0] && (dataInterval[0] = dataExtent[0]);
dataInterval[1] < dataExtent[0] && (dataInterval[1] = dataExtent[0]);
return dataInterval;
},
/**
* @override
*/
getValueState: function (value) {
var range = this.option.range;
var dataExtent = this.getExtent();
// When range[0] === dataExtent[0], any value larger than dataExtent[0] maps to 'inRange'.
// range[1] is processed likewise.
return (
(range[0] <= dataExtent[0] || range[0] <= value)
&& (range[1] >= dataExtent[1] || value <= range[1])
) ? 'inRange' : 'outOfRange';
},
/**
* @params {Array.<number>} range target value: range[0] <= value && value <= range[1]
* @return {Array.<Object>} [{seriesId, dataIndices: <Array.<number>>}, ...]
*/
findTargetDataIndices: function (range) {
var result = [];
this.eachTargetSeries(function (seriesModel) {
var dataIndices = [];
var data = seriesModel.getData();
data.each(this.getDataDimension(data), function (value, dataIndex) {
range[0] <= value && value <= range[1] && dataIndices.push(dataIndex);
}, this);
result.push({seriesId: seriesModel.id, dataIndex: dataIndices});
}, this);
return result;
},
/**
* @implement
*/
getVisualMeta: function (getColorVisual) {
var oVals = getColorStopValues(this, 'outOfRange', this.getExtent());
var iVals = getColorStopValues(this, 'inRange', this.option.range.slice());
var stops = [];
function setStop(value, valueState) {
stops.push({
value: value,
color: getColorVisual(value, valueState)
});
}
// Format to: outOfRange -- inRange -- outOfRange.
var iIdx = 0;
var oIdx = 0;
var iLen = iVals.length;
var oLen = oVals.length;
for (; oIdx < oLen && (!iVals.length || oVals[oIdx] <= iVals[0]); oIdx++) {
// If oVal[oIdx] === iVals[iIdx], oVal[oIdx] should be ignored.
if (oVals[oIdx] < iVals[iIdx]) {
setStop(oVals[oIdx], 'outOfRange');
}
}
for (var first = 1; iIdx < iLen; iIdx++, first = 0) {
// If range is full, value beyond min, max will be clamped.
// make a singularity
first && stops.length && setStop(iVals[iIdx], 'outOfRange');
setStop(iVals[iIdx], 'inRange');
}
for (var first = 1; oIdx < oLen; oIdx++) {
if (!iVals.length || iVals[iVals.length - 1] < oVals[oIdx]) {
// make a singularity
if (first) {
stops.length && setStop(stops[stops.length - 1].value, 'outOfRange');
first = 0;
}
setStop(oVals[oIdx], 'outOfRange');
}
}
var stopsLen = stops.length;
return {
stops: stops,
outerColors: [
stopsLen ? stops[0].color : 'transparent',
stopsLen ? stops[stopsLen - 1].color : 'transparent'
]
};
}
});
function getColorStopValues(visualMapModel, valueState, dataExtent) {
if (dataExtent[0] === dataExtent[1]) {
return dataExtent.slice();
}
// When using colorHue mapping, it is not linear color any more.
// Moreover, canvas gradient seems not to be accurate linear.
// FIXME
// Should be arbitrary value 100? or based on pixel size?
var count = 200;
var step = (dataExtent[1] - dataExtent[0]) / count;
var value = dataExtent[0];
var stopValues = [];
for (var i = 0; i <= count && value < dataExtent[1]; i++) {
stopValues.push(value);
value += step;
}
stopValues.push(dataExtent[1]);
return stopValues;
}
export default ContinuousModel;