React

by Augustus Yuan

HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.7/d3.js"></script>
<div id="app"></div>

CSS

body {
  background: #20262E;
  padding: 20px;
  font-family: Helvetica;
}

#app {
  background: #fff;
  border-radius: 4px;
  padding: 20px;
  transition: all 0.2s;
}

li {
  margin: 8px 0;
}

h2 {
  font-weight: bold;
  margin-bottom: 15px;
}

.done {
  color: rgba(0, 0, 0, 0.3);
  text-decoration: line-through;
}

input {
  margin-right: 5px;
}

React

class TodoApp extends React.Component {
  constructor(props) {
    super(props)
    this.onDbClick = this.onDbClick.bind(this);
  }
  
  componentDidMount() {
  var svg = d3.select("svg")
  .attr("width", "100%")
  .attr("height", "100%");
  
  var circleSvgs = svg.selectAll("circle");
  
  svg.call(d3.behavior.zoom().on("zoom", function (e) {
    svg.attr("transform", "translate(" + d3.event.translate + ")" + " scale(" + d3.event.scale + ")")
  }));
  }
  
  onDbClick(e) {
  
  // this is double click event on circle
  
  // when you double click on circle svg should not zoom
  
  // here no matter what I put, it does not stop the event propogation to svg
    e.preventDefault();
    e.stopPropagation();
    e.nativeEvent.stopImmediatePropagation();
  
  }
  
  render() {
    return (
    <div style={{border: '2px solid black', overflow: 'hidden'}}>
      <svg>
        <circle onDoubleClick={(e) => this.onDbClick(e)} cx="30" cy="30" r="20" fill="pink"></circle>
        <circle onDoubleClick={(e) => this.onDbClick(e)} cx="80" cy="80" r="20" fill="red"></circle>
      </svg>
    </div>
      
    )
  }
}

ReactDOM.render(<TodoApp />, document.querySelector("#app"))