Comments for The Tranxition Developer Blog

Comment on Customizing “lookful” WPF controls – Take 2 by hempelcx

hempelcx — Tue, 22 Dec 2009 16:50:22 +0000

Thanks for the comment, Marcel.

Sice “a non-zero margin applies space outside the element layout’s ActualWidth and ActualHeight” (http://bit.ly/6K25fI) you shouldn’t need to take that into account for CalculateIsTextTrimmed. Padding is an interesting issue, however, as well as any render transforms which may be applied to the TextBlock (and may or may not be applied when CalculateIsTextTrimmed executes.) I haven’t tested the proposed algorithm against either scenario, but I expect it will fail under both.

This solution is suboptimal and would definitely be better served by a custom control allowing access to MeasureOverride and ArrangeOverride. In this case, most of us are just looking for a clean hack to overcome the lookful nature of the TextBlock control when that’s the only option.

If you have a revised general purpose algorithm which you believe covers more cases, please post it in the comments!

Comment on Customizing “lookful” WPF controls – Take 2 by Marcel Kunz

Marcel Kunz — Mon, 21 Dec 2009 16:07:27 +0000

If you want to set Padding and Margin to the TextBlock you must subtract them from the textblock size in the CalculateIsTextTrimmed method.

Comment on A Generic Factory in C# by Bryan Ray

Bryan Ray — Fri, 30 Oct 2009 13:52:19 +0000

Definitely a good use of Reflection and an excellent walk through for understanding how to refactor your code and look for “code smells.”

I would, however, agree with hempelcx and cgassib that you’re very much going towards a Dependency Injection solution. There’s a lot of “support” code there that has to be maintained and rather than focusing on your application you’re having to focus on something that a DI container could do for you.

Take a look at Ninject, Unity, Autofac, Spring.NET, etc. There’s a handful of good DI libraries out there.

I only say this for future readers who are looking. Other than that it’s a great article, man.

Thanks.

Comment on A Generic Factory in C# by cgassib

cgassib — Thu, 08 Oct 2009 20:15:55 +0000

I agree. It sounds like the route you’re heading is leaning more towards a Dependency Injection approach.

Comment on A Generic Factory in C# by hempelcx

hempelcx — Thu, 08 Oct 2009 06:37:02 +0000

arno, To me that's starting to sound a lot like a plugin or extension framework. Personally, I would consider either a Dependency Injection Container or Microsoft's Managed Extensibility Framework depending on how far you want to take it.

Comment on Customizing “lookful” WPF controls – Take 2 by jan

jan — Wed, 07 Oct 2009 20:06:59 +0000

oh never mind, i figured it out.
sorry for the spam =)

Comment on Customizing “lookful” WPF controls – Take 2 by jan

jan — Wed, 07 Oct 2009 19:18:11 +0000

Hi! Thanks for this post. I downloaded the project file and it works on the multi-line but not if there’s just one word in it and Trimming = ”CharacterEllipsis” as Kevin noted above. Do you have an updated project file?
Thanks

Comment on Customizing “lookful” WPF controls – Take 2 by Richard Jones

Richard Jones — Wed, 07 Oct 2009 08:12:57 +0000

To solve the problem with calculating IsTextTrimmed when the field contains a single word, a simpler solution is to add the line:
formattedText.Trimming = TextTrimming.None
after
formattedText.MaxTextWidth = textBlock.ActualWidth
(rather than Kevin’s extra code from August 8th). This means that formattedText’s height always increases if its content needs to wrap around.

I have another problem: The IsTextTrimmed property is recalculated if the textblock size is changed (e.g. if the UI is resized). However, it doesn’t get recalculated if the textblock’s content is changed. I’m using binding to set the textblock’s value, and IsTextTrimmed is calculated correctly when the field is displayed initially. However if the underlying Text value is then changed to something else, IsTextTrimmed doesn’t get recalculated (unless you jiggle the edge of the UI!)

It seems that where we register the handler for the SizeChangedEvent, we also need to do something similar for when the Text property’s value is changed.
I’ve tried various things but haven’t found an elegant solution. Any ideas?

Comment on A Generic Factory in C# by -arno-

-arno- — Mon, 28 Sep 2009 12:50:51 +0000

Hello,
i developped quite the same thing (~not generic ), some time ago, and i’m now facing a new problem with this approach : i want my factory to build an inherited objet declared in a different assembly…the only way i found until now is to make my factory parse every assmebly available in a specific folder in order to find every “type” that would match my object interface… not very clean. Would you have an idea to solve this ?

Comment on Customizing “lookful” WPF controls – Take 2 by STEVE F

STEVE F — Wed, 16 Sep 2009 19:11:15 +0000

Anyone have code for this working in a textbox.
If so could you email it to me at steve_44@inbox.com