Knife tool doesn't pass through tweak/click and drag events correctly #71323

New Issue

Stanislav Blinov · 2019-11-03T20:36:40+01:00

Stanislav Blinov commented

2019-11-03 20:36:40 +01:00

Broken: 2.80, 2.81, 2.82

If in 3D View (Global) one is to set view3d.rotate to Alt+LMB Click Drag, the 'Panning' entry for the Knife tool doesn't seem to propagate that event, regardless of how it is configured. If view3d.rotate is set to Alt+LMB Press, then the same configuration can be set in Knife's 'Panning' entry, and will propagate. But setting it up this way prohibits the Alt+LMB combo for loop selection in edit mode, while Alt+Click Drag does not.
The same is true for Alt+LMB Tweak.

Steps to reproduce

Open User Preferences -> Keymap.
In 3D View -> 3D View (Global), change 'Rotate View' entry to Mouse, Left, Click Drag
In Mesh -> Knife Topology Tool -> Knife Tool Modal map, change 'Panning' entry to Mouse, Left, Click Drag
Exit user preferences
Verify that Alt+LMB drag rotates the view
Enter edit mode on some mesh and enable the Knife tool
Verify that Alt+LMB drag does not rotate the view
Cancel the tool and exit edit mode
Open User Preferences -> Keymap.
In 3D View -> 3D View (Global), change 'Rotate View' entry to Mouse, Left, Press
In Mesh -> Knife Topology Tool -> Knife Tool Modal map, change 'Panning' entry to Mouse, Left, Press
Exit user preferences
Verify that Alt+LMB drag rotates the view
Enter edit mode on some mesh and enable the Knife tool
Verify that Alt+LMB drag rotates the view

The steps above are illustrative and incomplete, you may encounter other issues like view rotation not stopping, etc., as the full setup may require more adjustments to the keymap. The point is that the Knife Tool doesn't seem to propagate the Click Drag event like it does with the Press event. Note that while step (15) verifies a possible workaround, it's not acceptable, as mapping in this way interferes with the usage of another mapping (Alt+LMB Click) in the viewport.

**Broken**: 2.80, 2.81, 2.82 If in 3D View (Global) one is to set view3d.rotate to Alt+LMB Click Drag, the 'Panning' entry for the Knife tool doesn't seem to propagate that event, regardless of how it is configured. If view3d.rotate is set to Alt+LMB Press, then the same configuration can be set in Knife's 'Panning' entry, and will propagate. But setting it up this way prohibits the Alt+LMB combo for loop selection in edit mode, while Alt+Click Drag does not. The same is true for Alt+LMB Tweak. **Steps to reproduce** 1. Open User Preferences -> Keymap. 2. In 3D View -> 3D View (Global), change 'Rotate View' entry to Mouse, Left, Click Drag 3. In Mesh -> Knife Topology Tool -> Knife Tool Modal map, change 'Panning' entry to Mouse, Left, Click Drag 4. Exit user preferences 5. Verify that Alt+LMB drag rotates the view 6. Enter edit mode on some mesh and enable the Knife tool 7. Verify that Alt+LMB drag **does not** rotate the view 8. Cancel the tool and exit edit mode 9. Open User Preferences -> Keymap. 10. In 3D View -> 3D View (Global), change 'Rotate View' entry to Mouse, Left, Press 11. In Mesh -> Knife Topology Tool -> Knife Tool Modal map, change 'Panning' entry to Mouse, Left, Press 12. Exit user preferences 13. Verify that Alt+LMB drag rotates the view 14. Enter edit mode on some mesh and enable the Knife tool 15. Verify that Alt+LMB drag rotates the view The steps above are illustrative and incomplete, you may encounter other issues like view rotation not stopping, etc., as the full setup may require more adjustments to the keymap. The point is that the Knife Tool doesn't seem to propagate the Click Drag event like it does with the Press event. Note that while step (15) verifies a possible workaround, it's not acceptable, as mapping in this way interferes with the usage of another mapping (Alt+LMB Click) in the viewport.

Stanislav Blinov commented

2019-11-03 20:36:40 +01:00

Added subscriber: @Stan_Pancakes

Alexander Revkov commented

2019-11-08 18:43:08 +01:00

Added subscriber: @avrprj

Germano Cavalcante commented

2019-12-12 20:36:55 +01:00

Added subscriber: @mano-wii

Germano Cavalcante commented

2019-12-12 20:36:55 +01:00

Please use the bug reporting template, and provide all the requested information.
It is important to have a part with a brief description of the problem and another indicating the steps to reproduce it.
Also explained here: https://www.youtube.com/watch?v=JTD0OJq_rF4

Also, is it the same bug as #62154?

Please use the [bug reporting template](https://developer.blender.org/maniphest/task/edit/form/1/), and provide all the requested information. It is important to have a part with a **brief description of the problem** and another indicating the **steps to reproduce it**. Also explained here: https://www.youtube.com/watch?v=JTD0OJq_rF4 Also, is it the same bug as #62154?

Stanislav Blinov commented

2019-12-20 07:43:13 +01:00

As per description of #62154? No, as this is not about MMB. But as per further discussion in it - yes :)

Germano Cavalcante commented

2019-12-20 15:12:17 +01:00

After some investigation, this is a result of the same limitation described in the other report.
So I will merge the reports.

After some investigation, this is a result of the same limitation described in the other report. So I will merge the reports.

Germano Cavalcante commented

2019-12-20 15:12:29 +01:00

Closed as duplicate of #62154

Germano Cavalcante closed this issue

2019-12-20 15:12:29 +01:00

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Knife tool doesn't pass through tweak/click and drag events correctly #71323