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Knife cursor goes away when dragging status bar to see options #107021

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opened 2023-04-17 02:30:12 +02:00 by Oliver Villar · 2 comments
Oliver Villar commented 2023-04-17 02:30:12 +02:00
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System Information
Operating system: Windows-10-10.0.19044-SP0 64 Bits
Graphics card: NVIDIA GeForce RTX 2080 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 531.41

Blender Version
Broken: version: 3.5.0, branch: blender-v3.5-release, commit date: 2023-03-29 02:56, hash: 1be25cfff18b
Worked: (newest version of Blender that worked as expected)

Short description of error
While using the Knife tool, and using middle mouse click and drag to see all options within the status bar, the knife cursor changes to the edit cross cursor. This doesn't happen when using the mouse wheel to scroll through the status bar. It also doesn't happen using the Knife Active Tool, only when pressing K to launch the tool.

Exact steps for others to reproduce the error

  1. Press K in Edit Mode to launch the knife tool
  2. Move the cursor over to the status bar, where the options for the tool are shown.
  3. Middle Mouse click and drag left and right to scroll through the status bar.

Knife cursor dissappears.mp4

**System Information** Operating system: Windows-10-10.0.19044-SP0 64 Bits Graphics card: NVIDIA GeForce RTX 2080 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 531.41 **Blender Version** Broken: version: 3.5.0, branch: blender-v3.5-release, commit date: 2023-03-29 02:56, hash: `1be25cfff18b` Worked: (newest version of Blender that worked as expected) **Short description of error** While using the Knife tool, and using middle mouse click and drag to see all options within the status bar, the knife cursor changes to the edit cross cursor. This doesn't happen when using the mouse wheel to scroll through the status bar. It also doesn't happen using the Knife Active Tool, only when pressing K to launch the tool. **Exact steps for others to reproduce the error** 1. Press K in Edit Mode to launch the knife tool 2. Move the cursor over to the status bar, where the options for the tool are shown. 3. Middle Mouse click and drag left and right to scroll through the status bar. [Knife cursor dissappears.mp4](/attachments/4f4c5822-8935-4901-a9a6-2b4135ed8ac7)
Knife cursor dissappears.mp4
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Oliver Villar added the
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 labels 2023-04-17 02:30:13 +02:00
Pratik Borhade commented 2023-04-17 05:49:24 +02:00
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Hi, thanks for the report. Can confirm with modal knife option.
Issue doesn't happen if knife is selected in toolbar.
Similar problem is seen in previous versions. Will check whether duplicate report exists.

Hi, thanks for the report. Can confirm with modal knife option. Issue doesn't happen if knife is selected in toolbar. Similar problem is seen in previous versions. Will check whether duplicate report exists.
Pratik Borhade added
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 labels 2023-04-17 05:49:52 +02:00
YimingWu commented 2023-04-17 10:11:36 +02:00
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void WM_cursor_modal_set(wmWindow *win, int val)
{
  if (win->lastcursor == 0) {
    win->lastcursor = win->cursor;
  }
  win->modalcursor = val;
  WM_cursor_set(win, val);
}

I believe the mechanism is that in the WM_cursor_modal_set(), it only registers last_cursor one time when last_cursor is not zero (as opposed to using a stack), which in this case it's already WM_CURSOR_EDIT when called from view_pan_invoke, because the knife modal operator already saved its last_cursor there for restoring when the knife modal operator quits. So when view_pan_modal exits, it restores the cursor to WM_CURSOR_EDIT.

The tool bar logic already saves the cursor before operator is called, thus not affected.

I suggest we could use a last_cursor stack, or saving the modal cursor state inside individual operators instead of a window?

cc @ideasman42 for WM_cursor_modal_set().

``` void WM_cursor_modal_set(wmWindow *win, int val) { if (win->lastcursor == 0) { win->lastcursor = win->cursor; } win->modalcursor = val; WM_cursor_set(win, val); } ``` I believe the mechanism is that in the `WM_cursor_modal_set()`, it only registers `last_cursor` one time when `last_cursor` is not zero (as opposed to using a stack), which in this case it's already `WM_CURSOR_EDIT` when called from `view_pan_invoke`, because the knife modal operator already saved its `last_cursor` there for restoring when the knife modal operator quits. So when `view_pan_modal` exits, it restores the cursor to `WM_CURSOR_EDIT`. The tool bar logic already saves the cursor before operator is called, thus not affected. I suggest we could use a `last_cursor` stack, or saving the modal cursor state inside individual operators instead of a window? cc @ideasman42 for `WM_cursor_modal_set()`.
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