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POWhen will Sencha Touch Charts handle events on DrawComponent Sprites?
 

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  1. POWhen will Sencha Touch Charts handle events on DrawComponent Sprites?
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    <p>In the Sencha Touch Charts 2 beta distribution, the Drawing guide example code has an example of a Sprite listening for touch start. The code given fails to draw any sprites, because it fails to insert a canvas onto the DOM. However this can be fixed by replacing this:</p> <pre><code> //add the component to the panel Ext.create('Ext.chart.Panel', { fullscreen: true, title: 'Yellow Circle', items: drawComponent }); </code></pre> <p>with this:</p> <pre><code> //add the component to the panel Ext.create('Ext.chart.Panel', { fullscreen: true, title: 'Yellow Circle', chart: drawComponent }); </code></pre> <p>Now, I'd really like to get the event handling to work. The example code continues with:</p> <pre><code>// Add a circle sprite var myCircle = drawComponent.surface.add({ type: 'circle', x: 100, y: 100, radius: 100, fill: '#cc5' }); // Now do stuff with the sprite, like changing its properties: myCircle.setAttributes({ fill: '#ccc' }, true); // Remember always to refresh the image drawComponent.surface.renderFrame(); // or animate an attribute on the sprite // no need to refresh the image when adding animations. myCircle.fx.start({ fill: '#555' }); // Add a touch listener to the sprite myCircle.addListener('touchstart', function() { alert('touchstarted!'); }); </code></pre> <p>but that final alert never happens on touch. Any ideas?</p> <p>drawComponent.addListener('touchstart'... works fine, but is of course not localised to the circle sprite.</p> <p>--- after more investigation ---</p> <p>I think the answer is simply that event handling on sprites his not implemented yet. e.g. in touch-charts/src/draw/engine/Canvas.js we have in the definition of Ext.draw.engine.Canvas, </p> <pre><code>getSpriteForEvent: function(e) { return null; //TODO!!! }, </code></pre> <p>OK - time to change the question from 'how?' to 'when?':</p> <blockquote> <p><strong>'When will Sencha Touch support Sprite event handling?"</strong></p> </blockquote>
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    1. COYou should file a bug / feature request at the Sencha forums.
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      1. POWhen will Sencha Touch Charts handle events on DrawComponent Sprites?
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    2. COYes - I've raised it there too. This started out as a How question, but as I learnt more it became an 'Oh dear it's not there question'.
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      1. POWhen will Sencha Touch Charts handle events on DrawComponent Sprites?
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