Fixes for cases where search results would be skipped or repeatedly found involving tables in RichTextLabel:
- If previous result was found in last cell of table, earlier cells would be skipped, since the end of the table was reached. Updated to not skip earlier cells when searching in reverse.
- When choosing next line to continue from after searching table, the inner line number within the table's cell was added, causing the search to jump forward if not on line 0 in the cell. This could cause lines to get skipped when searching forward, or searching the table again when searching in reverse. Updated to continue from the immediate next line before/after the table.
- If a table cell has multiple lines, repeated searching would only include the line where the previous result was found, then jump to the next cell. Updated to search remaining lines in the same cell first.
This new method allow you to get the line offset of the current
selection (returns -1 if nothing is selected.)
This is useful if you want to pop up a control or menu above the
currently selected text. Previously there was no accurate way to get
this information.
The logic is moved from the implementation of `scroll_to_selection`
verbatim, and that method has been adjusted to avoid repetition.
When calculating table height, RichTextLabel::_shape_line would increase the height when it reached the end of a complete row, or the final cell of the table. RichTextLabel::_resize_line would only increase the height at the end of a complete row, causing the height to ignore the final row if not all cells were populated. This would cause the final row to overlap with the following line in the RichTextLabel if it was the last visible line in the RichTextLabel, as _resize_line is called when updating scrolling properties.
This change moves the common table size calculations to a separate function to reuse the code between _shape_line and _resize_line, keeping the final cell check that was used in _shape_line.
Fixes#92603
