Operator.bl_options "GRAB_CURSOR" fails with nested calls. #80853

New Issue

michael campbell · 2020-09-16T20:39:28+02:00

michael campbell commented

2020-09-16 20:39:28 +02:00

System Information
Operating system: Windows-10-10.0.18362-SP0 64 Bits
Graphics card: GeForce GTX 1070/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 452.06

Blender Version
Broken: version: 2.91.0 Alpha, branch: master, commit date: 2020-09-11 09:14, hash: 1b6dd42803
Worked: (newest version of Blender that worked as expected)

Short description of error
bl_options "GRAB_CURSOR" option malfunctions if user presses middle mouse

Exact steps for others to reproduce the error
use an operator that has "GRAB_CURSOR" option in the bl_options. when the modal is running press middle mouse as if you want to rotate the view whilst using the modal. mouse wrapping stops working.

**System Information** Operating system: Windows-10-10.0.18362-SP0 64 Bits Graphics card: GeForce GTX 1070/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 452.06 **Blender Version** Broken: version: 2.91.0 Alpha, branch: master, commit date: 2020-09-11 09:14, hash: `1b6dd42803` Worked: (newest version of Blender that worked as expected) **Short description of error** bl_options "GRAB_CURSOR" option malfunctions if user presses middle mouse **Exact steps for others to reproduce the error** use an operator that has "GRAB_CURSOR" option in the bl_options. when the modal is running press middle mouse as if you want to rotate the view whilst using the modal. mouse wrapping stops working.

michael campbell commented

2020-09-16 20:39:28 +02:00

Added subscriber: @3di

Campbell Barton commented

2020-09-17 01:46:31 +02:00

Added subscriber: @ideasman42

Campbell Barton commented

2020-09-17 01:46:31 +02:00

Changed status from 'Needs Triage' to: 'Needs User Info'

Campbell Barton commented

2020-09-17 01:46:31 +02:00

Please attach test script.

michael campbell commented

2020-09-17 09:51:35 +02:00

script below. To replicate:

install addon
add a cube
press ctrl + shift + f in object mode and choose the solidify option from the popup menu
move the mouse left and right to change size of solidify
the cursor will wrap around the 3d viewport
press middle mouse button whilst still in themodal to rotate the view
let go of the middle mouse button and try moving the mouse to the left beyond the viewport
the cursor will no longer wrap around

The above behaviour will vary dependant on how many times the cursor has wrapped around. For example if you have a text editor to the right of the 3d viewport and you move your mouse to the right of the 3d viewport, the cursor will go to the left of the viewport, but hodling down the middle mouse wheel and moving, will temporarily move the tetxt editor. As though one bit of blender is ignoring cursor wrapping.

grab_mouse_bug.rar

script below. To replicate: - install addon - add a cube - press ctrl + shift + f in object mode and choose the solidify option from the popup menu - move the mouse left and right to change size of solidify - the cursor will wrap around the 3d viewport - press middle mouse button whilst still in themodal to rotate the view - let go of the middle mouse button and try moving the mouse to the left beyond the viewport - the cursor will no longer wrap around The above behaviour will vary dependant on how many times the cursor has wrapped around. For example if you have a text editor to the right of the 3d viewport and you move your mouse to the right of the 3d viewport, the cursor will go to the left of the viewport, but hodling down the middle mouse wheel and moving, will temporarily move the tetxt editor. As though one bit of blender is ignoring cursor wrapping. [grab_mouse_bug.rar](https://archive.blender.org/developer/F8891581/grab_mouse_bug.rar)

Ankit Meel commented

2020-10-07 11:33:41 +02:00

Changed status from 'Needs User Info' to: 'Needs Triage'

Campbell Barton commented

2020-11-10 10:55:12 +01:00

Note that this test is much to advanced, we need a simple script that can redo the error.

Having looked at the code though, ending a modal operator always disables grab.

This is related to the issue of modifiers each defining a mouse cursor, which has similar issues.

Ideally we would have a stack of interactivity states (mouse cursor grab, mouse cursor icon...) which would be pushed/popped automatically.

Note that this test is much to advanced, we need a simple script that can redo the error. Having looked at the code though, ending a modal operator always disables grab. This is related to the issue of modifiers each defining a mouse cursor, which has similar issues. Ideally we would have a stack of interactivity states (mouse cursor grab, mouse cursor icon...) which would be pushed/popped automatically.

Campbell Barton commented

2020-11-10 10:55:39 +01:00

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

Campbell Barton changed title from ~~bl_options "GRAB_CURSOR" option malfunctions if user presses middle mouse~~ to Operator.bl_options "GRAB_CURSOR" fails with nested calls.

2020-11-10 10:58:06 +01:00

Philipp Oeser removed the

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Operator.bl_options "GRAB_CURSOR" fails with nested calls. #80853