Print new number on screen and removing previous characters

[Xbiotec]

hi,
On ESP32 TTGO like below to print number or text, the the printing start at de defined position X and Y. (start to print from left)
when print a number, it could be good to justify it a right and clear the previous characters. May be there is way ?

I tried these 2 ways but not good and difficult to manage well the offset and can not remove the previous first digit!

1- do not use offset , the problem is that numbers are printed from left to right and previous last digit still on display

screen 2.jpg (23.14 KiB) Viewed 4447 times

2- Print of 9999 in green at X and Y position then print 999 in orange at X+offset and Y position. Previous fist digit "9" in green is still on the display too

screen 1.jpg (20.48 KiB) Viewed 4447 times

Do you have a way to solve that? ( cleardisplay is not nice)
thx for your prompt reply

[LeighM]

Add a space character to the text string.
You might need to do that based on the string length.

[stefan.erni]

Hi lucibel

I wrote a macro for leading space or leading zero in the AppDevelopper.

As a suggestion for number of char: (3)for byte, (5)for uinteger, (6)for sinteger, (10)for ulong, (11)for slong

Maybe it help a little

regards

Stefan

String_leading_space._post_1.fcsx

(12.85 KiB) Downloaded 396 times

leading_space_2021-12-23_19-09-51.png (70.84 KiB) Viewed 4433 times

leading_space_2021-12-23_19-11-54.png (130.21 KiB) Viewed 4433 times

[medelec35]

If you would like to post your flowchart, I can add a couple of examples for you.

[Xbiotec]

Hi my data are currently numbers right now.

Add a space character to the text string.
You might need to do that based on the string length.

So I used ToString$ then checked if number is more or less than 999 .
if more than 999 then add a space to the string.

It work well and was easy to do.
Thx LeighM

[Xbiotec]

Hi,
I can not send you the complete one who include EEPROM,webserver, networkcom,WLAN, 2 circularbuffers, 2 UARTS, RTC...
So I will send you a simple flowchart.

If you would like to post your flowchart, I can add a couple of examples for you.

[medelec35]

Hi.
A simple flowchart just displaying the numbers will be fine.