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javascriptcanvaskineticjs

Click Event on a Shape doesn't work in kineticjs


I want to print message when a click event on a shape is made.It doesn't fire at all and draggable also doesn't work.How can I make this work?Can anyone help?

JS Code

 $(function(){
    var stage = new Kinetic.Stage({
        container: 'toolbar',
        width: $("#gamebox").width(),
        height: window.innerHeight * 0.9,
        listening: true
   });
  var layer = new Kinetic.Layer();
  stage.add(layer);
  var line = new Kinetic.Shape({
            drawFunc: function (canvas) {
             console.log("shape");
            var context = canvas.getContext();
            context.beginPath();
            context.moveTo(20,5);
            context.quadraticCurveTo(10, 35, 20, 60);
            context.moveTo(20,5);
            context.quadraticCurveTo(30, 35, 20, 60);
            canvas.stroke(this);
            context.fillStyle = 'black';
            context.fill();
        },
         strokeWidth: 2,
        draggable: true
    });

    line.on('click', function() {
        alert("click detected");
    });
    layer.add(line);
    stage.add(layer);
 });

HTML Code

<div id="toolbar">        
</div>
<div id="gamebox">
</div>

Solution

  • In the more recent versions of KineticJS (5.0+ I think), a wrapped context is fed into drawFunc.

    Note that this wrapped context is a subset of the canvas context and does not have all the canvas context methods. For example, compositing is not available.

    Here's a working example of your code using KineticJS 5.1.0:

    var stage = new Kinetic.Stage({
      container: 'container',
      width: 350,
      height: 350
    });
    var layer = new Kinetic.Layer();
    stage.add(layer);
    
    
    var line=new Kinetic.Shape({
      x:0,
      y:0,
      stroke:"blue",
      fill: 'red',
      drawFunc: function(context) {
        context.beginPath();
        context.moveTo(20,5);
        context.quadraticCurveTo(10, 35, 20, 60);
        context.moveTo(20,5);
        context.quadraticCurveTo(30, 35, 20, 60);
        context.fillStrokeShape(this);
      }
    });
    layer.add(line);
    
    line.on('click', function() {
      alert("click detected");
    });
    
    layer.draw();
    body{padding:20px;}
    #container{
      border:solid 1px #ccc;
      margin-top: 10px;
      width:350px;
      height:350px;
    }
    <script src="http://d3lp1msu2r81bx.cloudfront.net/kjs/js/lib/kinetic-v5.1.0.min.js"></script>
    <h4>Click the shape.</h4>
    <div id="container"></div>