helper.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 zrUtil from 'zrender/src/core/util';
import {getLayoutRect} from '../../util/layout';
/**
* @param {module:echarts/component/visualMap/VisualMapModel} visualMapModel\
* @param {module:echarts/ExtensionAPI} api
* @param {Array.<number>} itemSize always [short, long]
* @return {string} 'left' or 'right' or 'top' or 'bottom'
*/
export function getItemAlign(visualMapModel, api, itemSize) {
var modelOption = visualMapModel.option;
var itemAlign = modelOption.align;
if (itemAlign != null && itemAlign !== 'auto') {
return itemAlign;
}
// Auto decision align.
var ecSize = {width: api.getWidth(), height: api.getHeight()};
var realIndex = modelOption.orient === 'horizontal' ? 1 : 0;
var paramsSet = [
['left', 'right', 'width'],
['top', 'bottom', 'height']
];
var reals = paramsSet[realIndex];
var fakeValue = [0, null, 10];
var layoutInput = {};
for (var i = 0; i < 3; i++) {
layoutInput[paramsSet[1 - realIndex][i]] = fakeValue[i];
layoutInput[reals[i]] = i === 2 ? itemSize[0] : modelOption[reals[i]];
}
var rParam = [['x', 'width', 3], ['y', 'height', 0]][realIndex];
var rect = getLayoutRect(layoutInput, ecSize, modelOption.padding);
return reals[
(rect.margin[rParam[2]] || 0) + rect[rParam[0]] + rect[rParam[1]] * 0.5
< ecSize[rParam[1]] * 0.5 ? 0 : 1
];
}
/**
* Prepare dataIndex for outside usage, where dataIndex means rawIndex, and
* dataIndexInside means filtered index.
*/
export function convertDataIndex(batch) {
zrUtil.each(batch || [], function (batchItem) {
if (batch.dataIndex != null) {
batch.dataIndexInside = batch.dataIndex;
batch.dataIndex = null;
}
});
return batch;
}