gateway-shapes.ts

/*
Copyright 2020 Bonitasoft S.A.

Licensed 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 type { IconPainter, PaintParameter } from './render';
import type { mxAbstractCanvas2D } from 'mxgraph';

import { ShapeBpmnEventBasedGatewayKind } from '../../../model/bpmn/internal';
import { mxRhombus, mxUtils } from '../initializer';
import { BpmnStyleIdentifier, StyleDefault } from '../style';
import { getBpmnIsInstantiating } from '../style/utils';

import { buildPaintParameter } from './render/icon-painter';

abstract class GatewayShape extends mxRhombus {
  // The actual value is injected at runtime by BpmnCellRenderer
  protected iconPainter: IconPainter = undefined;

  protected abstract paintInnerShape(paintParameter: PaintParameter): void;

  override paintVertexShape(c: mxAbstractCanvas2D, x: number, y: number, w: number, h: number): void {
    const paintParameter = buildPaintParameter({ canvas: c, x, y, width: w, height: h, shape: this });
    this.paintOuterShape(paintParameter);
    this.paintInnerShape(paintParameter);
  }

  protected paintOuterShape({ canvas, shapeConfig: { x, y, width, height } }: PaintParameter): void {
    super.paintVertexShape(canvas, x, y, width, height);
  }
}

/**
 * @internal
 */
export class ExclusiveGatewayShape extends GatewayShape {
  protected paintInnerShape(paintParameter: PaintParameter): void {
    this.iconPainter.paintXCrossIcon({
      ...paintParameter,
      iconStyleConfig: { ...paintParameter.iconStyleConfig, isFilled: true },
      ratioFromParent: 0.5,
    });
  }
}

/**
 * @internal
 */
export class ParallelGatewayShape extends GatewayShape {
  protected paintInnerShape(paintParameter: PaintParameter): void {
    this.iconPainter.paintPlusCrossIcon({
      ...paintParameter,
      iconStyleConfig: { ...paintParameter.iconStyleConfig, isFilled: true },
      ratioFromParent: 0.5,
    });
  }
}

/**
 * @internal
 */
export class InclusiveGatewayShape extends GatewayShape {
  protected paintInnerShape(paintParameter: PaintParameter): void {
    this.iconPainter.paintCircleIcon({
      ...paintParameter,
      ratioFromParent: 0.62,
      iconStyleConfig: { ...paintParameter.iconStyleConfig, isFilled: false, strokeWidth: StyleDefault.STROKE_WIDTH_THICK.valueOf() },
    });
  }
}

/**
 * @internal
 */
export class ComplexGatewayShape extends GatewayShape {
  protected paintInnerShape(paintParameter: PaintParameter): void {
    this.iconPainter.paintAsteriskIcon({
      ...paintParameter,
      iconStyleConfig: { ...paintParameter.iconStyleConfig, isFilled: true },
      ratioFromParent: 0.5,
    });
  }
}

/**
 * @internal
 */
export class EventBasedGatewayShape extends GatewayShape {
  protected paintInnerShape(paintParameter: PaintParameter): void {
    paintParameter = { ...paintParameter, iconStyleConfig: { ...paintParameter.iconStyleConfig, strokeWidth: 1 } };

    // circle (simple or double)
    this.iconPainter.paintCircleIcon({
      ...paintParameter,
      ratioFromParent: 0.55,
    });
    if (!getBpmnIsInstantiating(this.style)) {
      this.iconPainter.paintCircleIcon({
        ...paintParameter,
        ratioFromParent: 0.45,
      });
    }

    // inner icon
    const innerIconPaintParameter = {
      ...paintParameter,
      ratioFromParent: 0.3,
    };
    if (mxUtils.getValue(this.style, BpmnStyleIdentifier.EVENT_BASED_GATEWAY_KIND, ShapeBpmnEventBasedGatewayKind.Exclusive) == ShapeBpmnEventBasedGatewayKind.Parallel) {
      this.iconPainter.paintPlusCrossIcon(innerIconPaintParameter);
    } else {
      this.iconPainter.paintPentagon(innerIconPaintParameter);
    }
  }
}