Ext GWT 3.0 Drawing and Charting http://www.sencha.com/blog/ext-gwt-3-drawing-and-charting It has always been a challenge to draw objects in GWT because SVG and VML are not supported out of the box. In Ext GWT 3.0, we solve this problem by providing a draw framework that runs everywhere, from IE6 to the latest Chrome that is developed as a pure GWT library. en-us brendan@sencha.com Copyright 2011 2011-08-30T20:00:45+00:00 Comment by jessedziedzic I am in accordance completely! I am in accordance completely!

]]> Thu, 20 Oct 2011 05:46 GMT http://www.sencha.com/blog//ext-gwt-3-drawing-and-charting#id:28487#date:05:46 Comment by Yaniv Great work guys. This looks like a good design that will save us some time! Great work guys. This looks like a good design that will save us some time!

]]> Tue, 11 Oct 2011 23:31 GMT http://www.sencha.com/blog//ext-gwt-3-drawing-and-charting#id:28339#date:23:31 Comment by Hannah You mean I don’t have to pay for expert avidce like this anymore?! You mean I don’t have to pay for expert avidce like this anymore?!

]]> Wed, 28 Sep 2011 16:43 GMT http://www.sencha.com/blog//ext-gwt-3-drawing-and-charting#id:27831#date:16:43 Comment by Jerry Kudos to you! I hadn’t toughht of that! Kudos to you! I hadn’t toughht of that!

]]> Thu, 08 Sep 2011 13:01 GMT http://www.sencha.com/blog//ext-gwt-3-drawing-and-charting#id:26490#date:13:01 Comment by Arkady By markers I mean the ability to generate a pointer with a label to a particular point on a line chart. By markers I mean the ability to generate a pointer with a label to a particular point on a line chart.

]]> Wed, 07 Sep 2011 23:05 GMT http://www.sencha.com/blog//ext-gwt-3-drawing-and-charting#id:26464#date:23:05 Comment by Brendan Coughran @Arkady Not sure what you mean by markers. Charts like Line and Radar do have sprite markers to represent its points. Also there will be Label and Tooltip support in preview release 4. @Arkady
Not sure what you mean by markers. Charts like Line and Radar do have sprite markers to represent its points. Also there will be Label and Tooltip support in preview release 4.

]]> Wed, 07 Sep 2011 00:19 GMT http://www.sencha.com/blog//ext-gwt-3-drawing-and-charting#id:26431#date:00:19 Comment by Arkady Looks great! Is the charting framework going to support markers? Looks great!

Is the charting framework going to support markers?

]]> Wed, 07 Sep 2011 00:08 GMT http://www.sencha.com/blog//ext-gwt-3-drawing-and-charting#id:26430#date:00:08 Comment by Brendan Coughran @Daniel We do plan to add Canvas support, however not in the scope of the initial 3.0 release. One of the strengths of the framework is that the drawing logic is completely abstracted from the rendering engine. This will allow us to add a Canvas engine soon after. @Daniel
We do plan to add Canvas support, however not in the scope of the initial 3.0 release. One of the strengths of the framework is that the drawing logic is completely abstracted from the rendering engine. This will allow us to add a Canvas engine soon after.

]]> Wed, 31 Aug 2011 22:13 GMT http://www.sencha.com/blog//ext-gwt-3-drawing-and-charting#id:26197#date:22:13 Comment by Daniel Are there any plans to add Canvas support for drawing? We make heavy use of ExtJs graphs in our application, however, it’s performance isn’t that great given that it uses SVG as its drawing engine. With Canvas, the performance would be greatly improved over SVG. Are there any plans to add Canvas support for drawing? We make heavy use of ExtJs graphs in our application, however, it’s performance isn’t that great given that it uses SVG as its drawing engine.

With Canvas, the performance would be greatly improved over SVG.

]]> Wed, 31 Aug 2011 14:54 GMT http://www.sencha.com/blog//ext-gwt-3-drawing-and-charting#id:26172#date:14:54 Comment by Brendan Coughran @Vinny That wraps a Js library, which would defeat the purpose of having a pure GWT based framework. @Henry Sue 1. I’ll look into adding that functionality. 2. In the third preview release Bar Renderer Example shows how to do this. @The Jackal Thanks for pointing that out, result of eclipse generated getters and setters. It was changed for the third preview release. @Haixu Huang That could be accomplished by manipulating data on the store side. @Mathias That is a planned feature for beta1. @Omar That was discussed in the first developer preview. http://www.sencha.com/blog/ext-gwt-3-dev-preview-1/ Short answer: that can be accomplished server side, but not client side. @Vinny
That wraps a Js library, which would defeat the purpose of having a pure GWT based framework.

@Henry Sue
1. I’ll look into adding that functionality.
2. In the third preview release Bar Renderer Example shows how to do this.

@The Jackal
Thanks for pointing that out, result of eclipse generated getters and setters. It was changed for the third preview release.

@Haixu Huang
That could be accomplished by manipulating data on the store side.

@Mathias
That is a planned feature for beta1.

@Omar
That was discussed in the first developer preview. http://www.sencha.com/blog/ext-gwt-3-dev-preview-1/ Short answer: that can be accomplished server side, but not client side.

]]> Wed, 31 Aug 2011 01:18 GMT http://www.sencha.com/blog//ext-gwt-3-drawing-and-charting#id:26148#date:01:18 Comment by Omar Looks very good. Is there going to be any support for exporting the charts to clipboard / saving to local machine or printing them? Looks very good.
Is there going to be any support for exporting the charts to clipboard / saving to local machine or printing them?

]]> Tue, 30 Aug 2011 21:08 GMT http://www.sencha.com/blog//ext-gwt-3-drawing-and-charting#id:26139#date:21:08 Comment by Mathias Is there any drag and drop implementation planed for sprites - or can you point me at a good resource to implements it myself? Is there any drag and drop implementation planed for sprites - or can you point me at a good resource to implements it myself?

]]> Fri, 19 Aug 2011 11:06 GMT http://www.sencha.com/blog//ext-gwt-3-drawing-and-charting#id:25498#date:11:06 Comment by Haixu Huang Hi, please think about using logarithmic scale on y-axis and maybe more y-axis beyond the chart, some on left-side and some on right-side. Hi, please think about using logarithmic scale on y-axis and maybe more y-axis beyond the chart, some on left-side and some on right-side.

]]> Tue, 02 Aug 2011 01:49 GMT http://www.sencha.com/blog//ext-gwt-3-drawing-and-charting#id:24751#date:01:49 Comment by The_Jackal Some of these methods don’t seem to conform to Java naming standards: bar.setyAxisPosition bar.addyField @Vinny Google vis requires an external connection to Google, which many of my clients won’t tolerate. Some of these methods don’t seem to conform to Java naming standards:
bar.setyAxisPosition
bar.addyField

@Vinny Google vis requires an external connection to Google, which many of my clients won’t tolerate.

]]> Mon, 01 Aug 2011 23:37 GMT http://www.sencha.com/blog//ext-gwt-3-drawing-and-charting#id:24743#date:23:37 Comment by Henry Sue I have played with the preview release and I liked it. It is a big improvement over 2.x. But I do have complaints about the following 2 aspects of the design: 1. Tying legend to series Sometimes you want legend even with 1 series. With this design, it is impossible to accomplish this. 2. Tying colors to series (Column Chart) This is related to #1. If you have a single series of data, the chart will be more appealing if you have a different color for each column. But with this design, I don’t know if it can be done at all. I have played with the preview release and I liked it. It is a big improvement over 2.x. But I do have complaints about the following 2 aspects of the design:

1. Tying legend to series
Sometimes you want legend even with 1 series. With this design, it is impossible to accomplish this.

2. Tying colors to series (Column Chart)
This is related to #1. If you have a single series of data, the chart will be more appealing if you have a different color for each column. But with this design, I don’t know if it can be done at all.

]]> Mon, 01 Aug 2011 22:59 GMT http://www.sencha.com/blog//ext-gwt-3-drawing-and-charting#id:24741#date:22:59 Comment by Vinny Carpenter Looks great - any reason you are not leveraging GWT Visualization? (http://code.google.com/p/gwt-google-apis/wiki/VisualizationGettingStarted). It seems like Google is pushing the Visualization library for users of GWT and so I am just curious to see why you would implement something different.  Just curious.  Thanks and can’t wait for GXT 3.0. Looks great - any reason you are not leveraging GWT Visualization? (http://code.google.com/p/gwt-google-apis/wiki/VisualizationGettingStarted). It seems like Google is pushing the Visualization library for users of GWT and so I am just curious to see why you would implement something different.  Just curious.  Thanks and can’t wait for GXT 3.0.

]]> Mon, 01 Aug 2011 20:45 GMT http://www.sencha.com/blog//ext-gwt-3-drawing-and-charting#id:24726#date:20:45