Scroll to row in table?

[maku2903]

Hello
I wonder if present API gives possibility to scroll till some row (using row id or row position)?
f.e. I have a table which height can fully show 30 rows.
I want to use scroll in such a way that row on the 1000th position will show as 30th position of visible part of table (the end of visible part of table).
I hope I haven't over-described the point i want to achieve.

[rdoursenaud]

I’m looking into doing something similar and haven’t found a solution yet.
#169 should help but I haven’t found a way to use it for the moment.

[rdoursenaud]

There’s also a track_item() method that looks interesting but I can’t get it to work on table rows.

[v-ein]

My 2 cents - in case somebody bumps into the same issue.

• While DPG does provide set_x_scrol()/set_y_scroll() methods, they only support dpg.window and dpg.child, not tables.
• Internally, a scrollable table uses a child window (it happens inside of ImGui), so technically it's easy to extend the aforementioned methods to work on tables. I've done this in my local copy of DPG, and hope to eventually open a PR on this.
• A table_row doesn't seem to have a rectangle in the DPG "layout", i.e. the get_item_rect_xxx() methods return zeroes for a table row. I'm not sure if there's a way to make those methods work; I've circumvented this by placing a dpg.group into one of the cells and then querying that group's rectangle. If I remember correctly, get_item_pos() was giving me suitable numbers to calculate the y-coordinate for the row, which can then be passed to set_y_scroll(). Not sure if get_item_rect_min() would be a better choice, for some reason I didn't use it.

[jlgb-uoc]

It would be interesting to know how you made to scroll a table. It's blank in the documentation.
In my case, I would like to continuously add rows to a table, and keep the scroll always in the last row so you can view the last available information.
Is it complicated to do? I'm just landing in this amazing GUI

[v-ein]

Set tracked to True on a widget in your last row, and track_offset to 1.0. Each time you add a row, set tracked back to False on old row, and to True on the newly added row. That's it. No need to scroll explicitly.

With DPG 1.10.0, you can use set_x_scroll/set_y_scroll on tables to explicitly set a scroll position (see also get_x_scroll, get_x_scroll_max, get_y_scroll, get_y_scroll_max).

[v-ein]

So in your case, it's either tracked=True or set_y_scroll(get_y_scroll_max(table)). The former might work better.