src/component/helper/listComponent.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 formatUtil from '../../util/format';
import * as graphic from '../../util/graphic';
import { RectLike } from 'zrender/src/core/BoundingRect';
import { ItemStyleOption, ZRColor } from '../../util/types';
import Model from '../../model/Model';


interface BackgroundRelatedOption {
    backgroundColor?: ZRColor
    borderRadius?: number | number[]
    padding?: number | number[]
    itemStyle?: Omit<ItemStyleOption, 'color' | 'opacity'>
};

export function makeBackground(rect: RectLike, componentModel: Model<BackgroundRelatedOption>): graphic.Rect {
    const padding = formatUtil.normalizeCssArray(
        componentModel.get('padding')
    );
    const style = componentModel.getItemStyle(['color', 'opacity']);
    style.fill = componentModel.get('backgroundColor');
    const bgRect = new graphic.Rect({
        shape: {
            x: rect.x - padding[3],
            y: rect.y - padding[0],
            width: rect.width + padding[1] + padding[3],
            height: rect.height + padding[0] + padding[2],
            r: componentModel.get('borderRadius')
        },
        style: style,
        silent: true,
        z2: -1
    });
    // FIXME
    // `subPixelOptimizeRect` may bring some gap between edge of viewpart
    // and background rect when setting like `left: 0`, `top: 0`.
    // graphic.subPixelOptimizeRect(rect);

    return bgRect;
}