Class BrushFeature

src/component/toolbox/feature/Brush.ts:41–151

}

class BrushFeature extends ToolboxFeature<ToolboxBrushFeatureOption> {

    private _brushType: BrushTypeUncertain;
    private _brushMode: string;

    render(
        featureModel: ToolboxFeatureModel<ToolboxBrushFeatureOption>,
        ecModel: GlobalModel,
        api: ExtensionAPI
    ) {
        let brushType: BrushTypeUncertain;
        let brushMode: string;
        let isBrushed: boolean;

        ecModel.eachComponent({mainType: 'brush'}, function (brushModel: BrushModel) {
            brushType = brushModel.brushType;
            brushMode = brushModel.brushOption.brushMode || 'single';
            isBrushed = isBrushed || !!brushModel.areas.length;
        });
        this._brushType = brushType;
        this._brushMode = brushMode;

        zrUtil.each(featureModel.get('type', true), function (type) {
            featureModel.setIconStatus(
                type,
                (
                    type === 'keep'
                    ? brushMode === 'multiple'
                    : type === 'clear'
                    ? isBrushed
                    : type === brushType
                ) ? 'emphasis' : 'normal'
            );
        });
    }

    updateView(
        featureModel: ToolboxFeatureModel<ToolboxBrushFeatureOption>,
        ecModel: GlobalModel,
        api: ExtensionAPI
    ) {
        this.render(featureModel, ecModel, api);
    }

    getIcons() {
        const model = this.model;
        const availableIcons = model.get('icon', true);
        const icons: ToolboxBrushFeatureOption['icon'] = {};
        zrUtil.each(model.get('type', true), function (type) {
            if (availableIcons[type]) {
                icons[type] = availableIcons[type];
            }
        });
        return icons;
    };

    onclick(ecModel: GlobalModel, api: ExtensionAPI, type: IconType) {
        const brushType = this._brushType;