ScrollWheel does'nt draw numbers until I move it

[Iñaki_Bidasoro]

Hi!

I'm developing an application in the simulator, I'm stuck on one bug with the scrollWheel.

I have done these two scrollWheel that i update on their respective callbacks like this:

void Display_Stages::m_scroll_pressureUpdateItem (Item_To_Select &item, int16_t itemIndex)
{
  item.Update_Text (itemIndex);
}
void Display_Stages::m_scroll_pressureUpdateCenterItem (Selected_Item &item, int16_t itemIndex)
{
  item.Update_Text (itemIndex);
}

void Display_Stages::m_scroll_timeUpdateItem (Item_To_Select &item, int16_t itemIndex)
{
  item.Update_Text (itemIndex);
}
void Display_Stages::m_scroll_timeUpdateCenterItem (Selected_Item &item, int16_t itemIndex)
{

  item.Update_Text (itemIndex);
}

The problem is that when i make the widgets visible i do scroll.animateToItem (value) so that it can go where the value we want to modify is, and this works fine, but when its a new value and the  m_scroll_pressure.animateToItem (value) value =  0, as it is the same value that the position the widget is created in the callback doesn't trigger and it doesn't print a single number until i scroll a bit.

This is how it looks when bugged:

Am I doing something wrong? 

Thanks in advance.

[GaetanGodart]

Hello @Iñaki_Bidasoro ,

My first thought is that you don't invalidate.
Try something like:

void Display_Stages::m_scroll_pressureUpdateItem (Item_To_Select &item, int16_t itemIndex)
{
  item.Update_Text (itemIndex);
  pressureWheel.invalidate();
}
void Display_Stages::m_scroll_pressureUpdateCenterItem (Selected_Item &item, int16_t itemIndex)
{
  item.Update_Text (itemIndex);
  pressureWheel.invalidate();
}

void Display_Stages::m_scroll_timeUpdateItem (Item_To_Select &item, int16_t itemIndex)
{
  item.Update_Text (itemIndex);
  timeWheel.invalidate();
}
void Display_Stages::m_scroll_timeUpdateCenterItem (Selected_Item &item, int16_t itemIndex)
{

  item.Update_Text (itemIndex);
  timeWheel.invalidate();
}

(replace "pressureWheel" and "timeWheel" by the name of your scrollWheels).

If this comment solves your issue, I invite you to select it as "best answer".

If this doesn't solve your problem, I invite you to share your project in a 7z zipped file so I can try it myself.

Regards,