Outliner: Selection on collapsed row is inaccurate #82960

New Issue

Nathan Craddock · 2020-11-24T05:41:01+01:00

Nathan Craddock commented

2020-11-24 05:41:01 +01:00

After collapsing a row, the coordinates of the parent row become inaccurate. This is made clear by the hover highlights not appearing as expected, and selection becomes impossible or selects an unintended object.

It appears that the coordinates of the elements in the collapsed subtree have incorrect coordinates which causes outliner_find_item_at_x_in_row to report inaccurate data.

outliner-select-bug.mp4

To reproduce

In the default startup scene, Select the cube in the outliner, then collapse Collection.
Hover over the row icons next to Collection (Mesh, camera, light). The hover highlight should be slightly off.

This can be made more obvious by increasing the number of children in a collapsed row.

Duplicate the default cube around 10 times.
Select a later copy (like Cube.008)
Collapse Collection
Hover/Select the row icons. In this case the hover highlights for Collection fail to work

Introduced in: 15083

While that commit is when the bug was first introduced, later commits have made the issue more obvious and easy to reproduce.

After collapsing a row, the coordinates of the parent row become inaccurate. This is made clear by the hover highlights not appearing as expected, and selection becomes impossible or selects an unintended object. It appears that the coordinates of the elements in the collapsed subtree have incorrect coordinates which causes `outliner_find_item_at_x_in_row` to report inaccurate data. [outliner-select-bug.mp4](https://archive.blender.org/developer/F9363227/outliner-select-bug.mp4) To reproduce 1. In the default startup scene, Select the cube in the outliner, then collapse Collection. 2. Hover over the row icons next to Collection (Mesh, camera, light). The hover highlight should be slightly off. This can be made more obvious by increasing the number of children in a collapsed row. 1. Duplicate the default cube around 10 times. 2. Select a later copy (like Cube.008) 3. Collapse Collection 4. Hover/Select the row icons. In this case the hover highlights for Collection fail to work Introduced in: 15083 While that commit is when the bug was first introduced, later commits have made the issue more obvious and easy to reproduce.

Nathan Craddock commented

2020-11-24 05:41:01 +01:00

Changed status from 'Needs Triage' to: 'Confirmed'