maxGraph/packages/html/stories/Animation.stories.js

/*
Copyright 2021-present The maxGraph project Contributors
Copyright (c) 2006-2020, JGraph Ltd

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 { Graph, Point } from '@maxgraph/core';

import { globalTypes, globalValues } from './shared/args.js';
// required by the custom code (see the end of the Story)
import './css/animation.css';

export default {
  title: 'Effects/Animation',
  argTypes: {
    ...globalTypes,
  },
  args: {
    ...globalValues,
  },
};

const Template = ({ label, ...args }) => {
  const container = document.createElement('div');
  container.style.position = 'relative';
  container.style.overflow = 'hidden';
  container.style.width = `${args.width}px`;
  container.style.height = `${args.height}px`;
  container.style.background = 'url(/images/grid.gif)';
  container.style.cursor = 'default';

  const graph = new Graph(container);
  graph.setEnabled(false);
  const parent = graph.getDefaultParent();

  const vertexStyle = {
    shape: 'cylinder',
    strokeWidth: 2,
    fillColor: '#ffffff',
    strokeColor: 'black',
    gradientColor: '#a0a0a0',
    fontColor: 'black',
    fontStyle: 1,
    spacingTop: 14,
  };

  let e1;
  graph.batchUpdate(() => {
    const v1 = graph.insertVertex({
      parent,
      value: 'Pump',
      position: [20, 20],
      size: [60, 60],
      style: vertexStyle,
    });
    const v2 = graph.insertVertex({
      parent,
      value: 'Tank',
      position: [200, 150],
      size: [60, 60],
      style: vertexStyle,
    });
    e1 = graph.insertEdge({
      parent,
      source: v1,
      target: v2,
      style: {
        strokeWidth: 3,
        endArrow: 'block',
        endSize: 2,
        endFill: 1,
        strokeColor: 'black',
        rounded: 1,
      },
    });
    e1.geometry.points = [new Point(230, 50)];
    graph.orderCells(true, [e1]);
  });

  // Adds animation to edge shape and makes "pipe" visible
  const state = graph.view.getState(e1);
  state.shape.node.getElementsByTagName('path')[0].removeAttribute('visibility');
  state.shape.node.getElementsByTagName('path')[0].setAttribute('stroke-width', '6');
  state.shape.node.getElementsByTagName('path')[0].setAttribute('stroke', 'lightGray');
  state.shape.node.getElementsByTagName('path')[1].setAttribute('class', 'flow');

  return container;
};

export const Default = Template.bind({});