Scrollable container and wildcard values

[HHarj.1]

Hello again,

I have a bunch of measurement results that I would like to display on the screen but space is getting too little. I looked at the scrollable container example, where the long text was put as a text resource (or whatever that is). However, my measurement results aren't, of course, static text so I would need to use wildcard text buffers. How could I implement this? 

[Romain DIELEMAN]

Hi,

What do you meant by "Space is getting too little"? Could you use multiple textArea widgets instead of one big one?

Could you add a screenshot of what your project looks like on Designer and possibly a bit more detail on what you wish to show? Some of the other examples might help you where they show a fixed text and changing values (for example the RadioButton example where Ressource is used but with non static text)

/Romain

[HHarj.1]

Hi,

here is an example. I am using multiple text area widgets. There is a static text area for each measurement result (V1, V2..etc) and then a wildcard buffer for each of them. There are more results I would like to display than I can get fit on the display. Therefore I thought a scrollable container would be good, but I don't know how to implement that with wildcard values. I know how to do that with static text or normally with wildcard values when everything fits on the screen. I can make the font size smaller, but you can only do that for a certain point and it's not a good solution.

[Romain DIELEMAN]

Instead of a scrollable container use a scollWheel or scrollList. I believe this is exactly what you need for your situation since you can have as many elements as you like with the textArea widgets you need. You can have a look at Tutorial 4 and at some of the projects using those widgets (some examples configure the scrollWheel or list through code and not designer directly, like in Demo 3).

[Krautermann]

I am trying to do the same thing where I want to update the wildcards in the scroll list but I cannot find the wild card in Screen2ViewBase.cpp even though I created them on TouchGFX Designer.

 

So I need help and thus bumping this post. A solution has not yet been posted.

[JTP1]

Hello

Because items in ScrollList must be containers, not single textAreas, you cannot find wildcard buffers of list items from the view- class base file. Instead you must make function to your list-item container to update texts and then call this function from view- class.

Maybe I make some example, what things you need to your scroll list ... Typed texts or wild card buffer -texts, select item highlight, callback to view when some item selected ?

 

[Krautermann]

Hi @JTP1 

Thank you for your reply. I don't need to select any item, however I need to fill the table with incoming data from SPI/UART.

I have put a wildcard inside the scroll list container and this should store the received buffer - Do you know how to do that? It seems I need to do an infinite switch case function??

Also how do I make the table scroll up automatically as it gets filled?

[JTP1]

Hello. How many lines you should have then totally ? It might problematic if you want to save big amount of data.

[Krautermann]

I don't want to save any data, just want to display them on an infinitely long table. The data received from SPI comes in at around more than 10,000 per second, I want to display all of them if possible on the table.

I was successful yesterday at displaying random chars in the table but I have yet to figure out how to export SPI data to the table and make the table scroll up automatically.

[Krautermann]

Maybe I do need to save the data after all, but it can be overwritten with time I suppose.