ingenious-flow-designer/packages/flow-designer/src/nodes/Task.ts

[演示地址](http://antd-vben5-pro.madong.tech/)

import { GraphModel, h, RectNode, RectNodeModel } from "@logicflow/core";
import { ColorEnum, NodeSizeEnum, NodeStateEnum } from "../types/enums";

class TaskModel extends RectNodeModel {
  constructor(data: any, graphModel: GraphModel) {
    super(data, graphModel);
  }

  setAttributes(): void {
    if((this.text && this.text.value == "") || !this.text) {
      this.text.value = "用户任务";
    }

    if (this.properties._width) {
      this.width = this.properties._width;
    } else {
      this.width = NodeSizeEnum.width;
    }

    if (this.properties._height) {
      this.height = this.properties._height;
    } else {
      this.height = NodeSizeEnum.height;
    }

    if (this.properties._radius !== undefined) {
      this.radius = this.properties._radius;
    } else {
      this.radius = 4;
    }

    if (this.properties._stroke) {
      this.properties.stroke = this.properties._stroke;
    }
    if (this.properties._fill) {
      this.properties.fill = this.properties._fill;
    }
    if (this.properties._strokeWidth) {
      this.properties.strokeWidth = this.properties._strokeWidth;
    }
    if (this.properties._opacity) {
      this.properties.opacity = this.properties._opacity;
    }
  }

  getNodeStyle() {
    const style = super.getNodeStyle();
    const state = this.properties.state;

    if(state === NodeStateEnum.history) {
      style.stroke = ColorEnum.historyColor;
      style.fill = `${ColorEnum.historyColor}10`;
    } else if(state === NodeStateEnum.active) {
      style.stroke = ColorEnum.activeColor;
      style.fill = `${ColorEnum.activeColor}10`;
    } else if(state === NodeStateEnum.error) {
      style.stroke = ColorEnum.errorColor;
      style.fill = `${ColorEnum.errorColor}10`;
    } else {
      style.stroke = ColorEnum.primaryColor;
      style.fill = `${ColorEnum.primaryColor}08`;
    }

    if (this.properties._stroke) {
      style.stroke = this.properties._stroke;
    }
    if (this.properties._fill) {
      style.fill = this.properties._fill;
    }
    if (this.properties._strokeWidth) {
      style.strokeWidth = this.properties._strokeWidth;
    }
    if (this.properties._opacity !== undefined) {
      style.opacity = this.properties._opacity;
    }

    return style;
  }
}

class TaskView extends RectNode {
  private getUserIcon() {
    const { model } = this.props;
    const { x, y, width } = model;
    const style = model.getNodeStyle();
    const iconSize = 16;
    const padding = 8;

    const headSize = iconSize * 0.35;
    const bodyWidth = iconSize * 0.6;
    const bodyHeight = iconSize * 0.4;
    const headX = x - width / 2 + padding + iconSize / 2;
    const headY = y - headSize / 2 - 2;
    const bodyX = headX;
    const bodyY = y + 2;

    return h("g", {}, [
      h("circle", {
        cx: headX,
        cy: headY,
        r: headSize / 2,
        fill: style.stroke,
        stroke: "none"
      }),
      h("rect", {
        x: bodyX - bodyWidth / 2,
        y: bodyY,
        width: bodyWidth,
        height: bodyHeight,
        rx: bodyHeight / 2,
        ry: bodyHeight / 2,
        fill: style.stroke,
        stroke: "none"
      })
    ]);
  }

  private getLeftBar() {
    const { model } = this.props;
    const { x, y, width, height } = model;
    const style = model.getNodeStyle();
    const barWidth = 3;

    return h("rect", {
      x: x - width / 2,
      y: y - height / 2,
      width: barWidth,
      height,
      rx: 1.5,
      ry: 1.5,
      fill: style.stroke,
      opacity: 0.7
    });
  }

  getResizeShape() {
    const { model } = this.props;
    const { x, y, width, height, radius } = model;
    const style = model.getNodeStyle();
    return h("g", {}, [
      h("rect", {
        ...style,
        x: x - width / 2,
        y: y - height / 2,
        rx: radius,
        ry: radius,
        width,
        height
      }),
      this.getLeftBar(),
      this.getUserIcon()
    ]);
  }

  getShape() {
    return this.getResizeShape();
  }
}

export default {
  type: "task",
  view: TaskView,
  model: TaskModel,
};