With our previous release (Q2 2012) we introduced RadHtmlChart, but we didn’t stop there – even before the next major release we introduced a lot of the features you asked for.
Once again we leveraged the latest HTML5 goodness and RadHtmlChart now has its own younger brother – RadGauge. In fact, it’s a pair of twins – RadRadialGauge and RadLinearGauge to make the family life even more fun.
Put simply, you can use the gauge to show very specific data with relation to a given range. You could mimic a car dashboard and show the fuel left and have the last quarter glow bright red to draw the attention. But I bet you know better than me what you would need a gauge for, so let’s get down to the details :)
Once again, SVG is used for modern browsers and VML for the dinosaurs like IE6 and IE7. Yes, I dare mention them because the gauge will still work under them, despite targeting modern web development.
As I mentioned earlier – the RadGauge moniker holds two gauges – a radial and a linear. To make things clearer they are separated in different tags so you can’t confuse properties.
The simplicity and usability were once again focus during development, so the gauge’s markup is also very close to its rendering – WYSIWIG in a way ;-)
The RadRadialGauge does exactly what its name suggests – a rounded dial much like a car dashboard with an arrow pointing against the scale you defined. Let’s take a quick look at some markup:
You will soon be able to see this live in a demo, but let me showcase it in advance:
It doesn’t get simpler than that.
So, this renders the following gauge:
Quite quickly and quite pretty, right :) Of course, the large set of skins all other controls have are extended to the gauge, too. The screenshot is an example of the Forest skin.
But this is not all, let me give you a sneak peek of what can be achieved with the gauge once you put the designers to work:
You can think of the linear gauge much in the same way you think of the thermometer outside your window – a line that fills up with mercury to show you cold or hot. It is not much different than its brother, but you can flip it:
The markup you’ve seen so far isn’t much, but if you do not want to see it at all - this time we are shipping the control with a design-time configurator right from the start.
I hope you like what you saw, so once the release is out – download it, give it a try and experience all the new magic tricks we have cooked up for you.
There are even more features in the control, but I’ll keep them a secret for the release. *Hint* look at different pointer types and labels positioning. If there is something you want, but you cannot find – let us know, this is how the control can become better :-)
Marin Bratanov is a Principal Technical Support Engineer in the ASP.NET AJAX division. Ever since he joined Telerik in early 2011 as a novice, his main focus has been improving the services and customer care the company offers. Apart from work, Marin is an avid reader and usually enjoys the worlds of fantasy and Sci-Fi literature. You can find him on Twitter, Goodreads, LinkedIn and GooglePlus.