echarts default 源码
echarts default 代码
文件路径:/src/loading/default.ts
/*
* 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 * as graphic from '../util/graphic';
import { LoadingEffect } from '../util/types';
import ExtensionAPI from '../core/ExtensionAPI';
const PI = Math.PI;
/**
* @param {module:echarts/ExtensionAPI} api
* @param {Object} [opts]
* @param {string} [opts.text]
* @param {string} [opts.color]
* @param {string} [opts.textColor]
* @return {module:zrender/Element}
*/
export default function defaultLoading(
api: ExtensionAPI,
opts?: {
text?: string;
color?: string;
textColor?: string;
maskColor?: string;
zlevel?: number;
showSpinner?: boolean;
spinnerRadius?: number;
lineWidth?: number;
fontSize?: number;
fontWeight?: 'normal' | 'bold' | 'bolder' | 'lighter' | number;
fontStyle?: 'normal' | 'italic' | 'oblique';
fontFamily?: string
}
): LoadingEffect {
opts = opts || {};
zrUtil.defaults(opts, {
text: 'loading',
textColor: '#000',
fontSize: 12,
fontWeight: 'normal',
fontStyle: 'normal',
fontFamily: 'sans-serif',
maskColor: 'rgba(255, 255, 255, 0.8)',
showSpinner: true,
color: '#5470c6',
spinnerRadius: 10,
lineWidth: 5,
zlevel: 0
});
const group = new graphic.Group() as (graphic.Group & LoadingEffect);
const mask = new graphic.Rect({
style: {
fill: opts.maskColor
},
zlevel: opts.zlevel,
z: 10000
});
group.add(mask);
const textContent = new graphic.Text({
style: {
text: opts.text,
fill: opts.textColor,
fontSize: opts.fontSize,
fontWeight: opts.fontWeight,
fontStyle: opts.fontStyle,
fontFamily: opts.fontFamily
},
zlevel: opts.zlevel,
z: 10001
});
const labelRect = new graphic.Rect({
style: {
fill: 'none'
},
textContent: textContent,
textConfig: {
position: 'right',
distance: 10
},
zlevel: opts.zlevel,
z: 10001
});
group.add(labelRect);
let arc: graphic.Arc;
if (opts.showSpinner) {
arc = new graphic.Arc({
shape: {
startAngle: -PI / 2,
endAngle: -PI / 2 + 0.1,
r: opts.spinnerRadius
},
style: {
stroke: opts.color,
lineCap: 'round',
lineWidth: opts.lineWidth
},
zlevel: opts.zlevel,
z: 10001
});
arc.animateShape(true)
.when(1000, {
endAngle: PI * 3 / 2
})
.start('circularInOut');
arc.animateShape(true)
.when(1000, {
startAngle: PI * 3 / 2
})
.delay(300)
.start('circularInOut');
group.add(arc);
}
// Inject resize
group.resize = function () {
const textWidth = textContent.getBoundingRect().width;
const r = opts.showSpinner ? opts.spinnerRadius : 0;
// cx = (containerWidth - arcDiameter - textDistance - textWidth) / 2
// textDistance needs to be calculated when both animation and text exist
const cx = (api.getWidth() - r * 2 - (opts.showSpinner && textWidth ? 10 : 0) - textWidth) / 2
- (opts.showSpinner && textWidth ? 0 : 5 + textWidth / 2)
// only show the text
+ (opts.showSpinner ? 0 : textWidth / 2)
// only show the spinner
+ (textWidth ? 0 : r);
const cy = api.getHeight() / 2;
opts.showSpinner && arc.setShape({
cx: cx,
cy: cy
});
labelRect.setShape({
x: cx - r,
y: cy - r,
width: r * 2,
height: r * 2
});
mask.setShape({
x: 0,
y: 0,
width: api.getWidth(),
height: api.getHeight()
});
};
group.resize();
return group;
}
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