04-21-2020 14:48 PM - last edited 03-28-2022 11:32 AM
Note (6-30-2021): this technique cannot be used within Power Apps applications created within Teams.
Updated on 9-13-2020: in step 3 formula, the lblMyLabel has been replaced with the Self operator; simply copy the formula to your label's Width property and it'll work fine!
I am very happy today to provide the Power Apps Community with this Auto Width Label Generator component!
This component will allow you to make your application's label controls grow or shrink according to their content. And this auto-width feature will work whatever the Power Apps font you use and whatever the font-weight of your label.
And guess what: it works for buttons as well!
Before using this component though, make sure to read the recommandations and instructions below...
How does it work?
Well, in fact it's pretty simple... A Power Apps collection named colCharsWidth lists the exact width of each and every of the 255 Latin characters from the ASCII table. Then, a simple formula placed inside the Width property of a label will calculate its size, given the characters present in its Text property.
How can this help me build my applications?
Well, for instance, it will help you with the following:
Until today, making multi-language applications was a challenge as labels content could vary in size according to the language, thus making it hard, for instance, to have nice toolbars that would adjust themselves to their content.
Before, a toolbar would have fixed-sized labels just like this:
Some of you decided probably to maintain the size of each label within the list of translations for the various labels. But what a pain to maintain!
Now, using this little trick of mine, your toolbar will just look like a normal toolbar, whatever the language:
Breadcrumbs and tabs
Using this component, you will be able to have breadcrumbs where the nice little chevrons between each level will move over according to the content of each label at each level, assuming they are positionned using relative positionning of course.
Likewise, tabs will adjust their sizes whatever their content or language.
How do I use it?
From there on, the component is pretty self-explanatory, but I'll detail it here anyway:
And BOOOOM it's done! Your labels have now auto-width! 😃
Why create a new app dedicated to that component?
Because the component holds an internal collection of 224 characters * 13 fonts * 4 font-weights = 11,648 entries describing each character width, for each font and each font-weight. Why not 255 characters? Because the first 31 characters are special control chars which are not relevant for this case.
So, considering the size of that internal collection, wherever you put the component it might really slow down the application where it is hosted. So don't put that component on a screen of the application that you are actually building and where you will want to have auto-width labels. Create a dedicated application to use this component.
You'll also find the component (with my other components) here on Github: e-gallis/PowerApps.
I hope you'll enjoy this little trick that just changed my life on Power Apps! 😉
If some of you wonder how I got the sizes for each character, font and font-weight... Well I used the native behavior of Power Apps that shifts the content of a label to the next line when it reaches its width's right border. Setting that label to AutoHeight, I made an application that would detect when the label's height would change. And so, for each character here is what I did:
Here's a animation of the app running... (funny to watch isn't it? 😁😞
You can download this FontCharsWidthBuilder app right below if you need to calculate the widths for other type of characters or fonts.
This component is also available on my Github Power Apps repo: https://github.com/e-gallis/PowerApps/tree/master/Components/AutoWidthLabelGenerator
Please don't forget to give a "thumbs up" to this post if you like it... 🙂
And do not hesitate to post your questions below...
Yours truly, @R3dKap
This is great. I can get it to work in Powerapps Classic, but having trouble implementing it in Powerapps for Teams as Teams doesn't seem to have all of the Control Properties cited in the solution. Do you know of/has anyone found a workaround for this?
I'm afraid that since in Teams Power Apps applications you cannot access some of the controls properties (like the Font or FontWeight properties of a label), the solution I propose here cannot be used within Teams applications.
First and foremost, Great Job! Great component! You have saved me alot of time trying to figure somethings out, as well as gave me ideas along the way!
Now for the NooB question.
I have 3 labels all in a row. each one is dynamic based on the first label.
Label1 - label2 - label3
what I am wanting it todo is collapse to the left, with the width of each one. so there is only the padding between the labels?
Here is snippet of what I mean......Label2 needs to follow the width of Label1?
Any help would be appreciated!
Well if you have 3 labels that should stick together whatever their content, you can do it this way:
Label1.X = 100 (or whatever is the position of your first label) Label1.Width = <the formula provided by the AutoWidth component> Label2.X = Label1.X + Label1.Width Label2.Width = <the formula provided by the AutoWidth component> Label3.X = Label2.X + Label2.Width Label3.Width = <the formula provided by the AutoWidth component>
I hope this is what you were trying to acheive... 🙂
Hi @R3dKap , first of all thanks for a great looking component! I have imported your component within an App, then in a separate app I have copied the code for OnStart and then applied the step 3 formula to the width, however it is stuck at size 10 and not dynamic, wondering if I have missed a step? Any help appreciated 🙂