Comments on: Rating Selector

By: Hassan

Hassan — Thu, 28 Feb 2008 09:37:42 +0000

Hi, Thanks for your help. One last question.
Why did you use the SelectRatingcommand for the RatingSelectorItem. Couldnt you have used an MouseLeftButtonDown event for it just like the MouseEnter event. By the way I did this but the event was not fired. Dont know what the problem was.

Thanks

By: marlongrech

marlongrech — Wed, 27 Feb 2008 15:46:12 +0000

Hi,
that is an anonymouse function
http://www.softsteel.co.uk/tutorials/cSharp/lesson22.html

Regards

By: Hassan

Hassan — Wed, 27 Feb 2008 09:28:53 +0000

Hi, can you explain what MouseEnter += delegate means. I’ve never seen such an instruction before.
Thanks.

By: marlongrech

marlongrech — Tue, 26 Feb 2008 11:14:41 +0000

Hi,

basically the concept is to create Lookless Controls
have a look here
http://www.cubido.at/Blog/tabid/176/EntryID/81/Default.aspx

Let me know if you need more info

By: Hassan

Hassan — Tue, 26 Feb 2008 09:02:05 +0000

A slight problem in the previous comment.
Hi, sorry for asking so many questions. Could you give me the reason why you used a ResourceDictionary and not a UserControl and why did you wrap the ItemsPanelTemplate and ControlTemplate inside Style tags. Couldnt you have used them without these tags. Thanks

By: Hassan

Hassan — Tue, 26 Feb 2008 08:44:48 +0000

Hi, sorry for asking so many questions. Could you give me the reason why you used a ResourceDictionary and not a UserControl and why did you wrap the and inside tags. Couldnt you have used them without these tags. Thanks

By: marlongrech

marlongrech — Sat, 23 Feb 2008 14:44:48 +0000

no problem… if you need any more help (even not related to AvalonControlsLibrary) please let me know

Regards

By: Hassan

Hassan — Sat, 23 Feb 2008 14:41:00 +0000

You are STUPENDOUS!!! Thanks a lot for the help.

By: marlongrech

marlongrech — Sat, 23 Feb 2008 14:14:34 +0000

Basically what happens is that the Rating Selector Raises an event (RateItemMouseOver) to all RatingSelectorItems to tell them that one of the items is being mouse overed.

All RaitingSelectorItems have a property called IsHigherRateMouseOver which is set in the event handler of the Rating selector RateItemMouseOver event.. This event handler looks like this

//handler for the rate item mouse over
void ParentSelectorRateItemMouseOver(object sender, RateItemMouseOverEventArgs args)
{
if (args.Cancel)

IsHigherRateMouseOver = false;
else
IsHigherRateMouseOver = args.RateValue >= RateValue;
}

so basically here every RatingSelectorItem checks if the the value of the item being mouse over is greater or equal to it’s own item. If it is the IsHigherRateMouseOver is set to true. In the XAML there is a trigger that gives a color to the item if this property is set to true….

That’s it …. if you need any more info please let me know

By: Hassan

Hassan — Sat, 23 Feb 2008 13:26:39 +0000

Hi, Could you explain a little about the events you have declared in your control. I have downloaded the code but still dont know quite how its functioning. When the mouse moves over a RatingSelectorItem the Fill color of path changes but how do the previous Items know they have to change color too? Thanks.