echarts brushHelper 源码
echarts brushHelper 代码
文件路径：/src/component/helper/brushHelper.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 BoundingRect, { RectLike } from 'zrender/src/core/BoundingRect';
import {onIrrelevantElement} from './cursorHelper';
import * as graphicUtil from '../../util/graphic';
import ExtensionAPI from '../../core/ExtensionAPI';
import { ElementEvent } from 'zrender/src/Element';
import ComponentModel from '../../model/Component';
export function makeRectPanelClipPath(rect: RectLike) {
rect = normalizeRect(rect);
return function (localPoints: number[][]) {
return graphicUtil.clipPointsByRect(localPoints, rect);
};
}
export function makeLinearBrushOtherExtent(rect: RectLike, specifiedXYIndex?: 0 | 1) {
rect = normalizeRect(rect);
return function (xyIndex: 0 | 1) {
const idx = specifiedXYIndex != null ? specifiedXYIndex : xyIndex;
const brushWidth = idx ? rect.width : rect.height;
const base = idx ? rect.x : rect.y;
return [base, base + (brushWidth || 0)];
};
}
export function makeRectIsTargetByCursor(rect: RectLike, api: ExtensionAPI, targetModel: ComponentModel) {
const boundingRect = normalizeRect(rect);
return function (e: ElementEvent, localCursorPoint: number[]) {
return boundingRect.contain(localCursorPoint[0], localCursorPoint[1])
&& !onIrrelevantElement(e, api, targetModel);
};
}
// Consider width/height is negative.
function normalizeRect(rect: RectLike): BoundingRect {
return BoundingRect.create(rect);
}
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