bpy.ops.screen.screen_full_area() resets certain fields of the context #89526

Closed
opened 2021-06-29 11:56:06 +02:00 by Sybren A. Stüvel · 7 comments

System Information
Operating system: Linux-5.4.0-74-generic-x86_64-with-glibc2.31 64 Bits
Graphics card: GeForce RTX 2080/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 460.80

Blender Version
Broken: version: 2.93, anything after b787581c9c
Worked: verson 2.92 and master before b787581c9c.

Short description of error
Calling bpy.ops.screen.screen_full_area() resets certain fields of the context, most notably area and space_data. This makes it impossible to register a draw handler or even call bpy.ops.screen.screen_full_area() again to restore the area.

Exact steps for others to reproduce the error

  1. Run the code below
  2. In the 3D Viewport press F3, search for "demo".
  3. Run the "Toggle Fullscreen Demo" operator.
  4. It should make the area go full-screen and back again, without any errors. Instead, it shows Space data is None.

The code and these steps are already set up in fullscreen_demo.blend

import bpy


class DEMO_OT_fullscreen_toggle(bpy.types.Operator):
    bl_idname = "demo.fullscreen_toggle"
    bl_label = "Toggle Fullscreen Demo"
    bl_description = "Demo for issue with b787581c9cda"

    def execute(self, context):
        # Going full-screen shouldn't break the context.
        bpy.ops.screen.screen_full_area()

        # Space data should remain available after full-screening.
        assert context.space_data is not None, 'Space data is None'

        # Un-full-screening should work.
        bpy.ops.screen.screen_full_area()


bpy.utils.register_class(DEMO_OT_fullscreen_toggle)
**System Information** Operating system: Linux-5.4.0-74-generic-x86_64-with-glibc2.31 64 Bits Graphics card: GeForce RTX 2080/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 460.80 **Blender Version** Broken: version: 2.93, anything after b787581c9c Worked: verson 2.92 and master before b787581c9c. **Short description of error** Calling `bpy.ops.screen.screen_full_area()` resets certain fields of the context, most notably `area` and `space_data`. This makes it impossible to register a draw handler or even call `bpy.ops.screen.screen_full_area()` again to restore the area. **Exact steps for others to reproduce the error** 1. Run the code below 2. In the 3D Viewport press F3, search for "demo". 3. Run the "Toggle Fullscreen Demo" operator. 4. It should make the area go full-screen and back again, without any errors. Instead, it shows `Space data is None`. The code and these steps are already set up in [fullscreen_demo.blend](https://archive.blender.org/developer/F10205434/fullscreen_demo.blend) ``` import bpy class DEMO_OT_fullscreen_toggle(bpy.types.Operator): bl_idname = "demo.fullscreen_toggle" bl_label = "Toggle Fullscreen Demo" bl_description = "Demo for issue with b787581c9cda" def execute(self, context): # Going full-screen shouldn't break the context. bpy.ops.screen.screen_full_area() # Space data should remain available after full-screening. assert context.space_data is not None, 'Space data is None' # Un-full-screening should work. bpy.ops.screen.screen_full_area() bpy.utils.register_class(DEMO_OT_fullscreen_toggle) ```
Author
Member

Added subscriber: @dr.sybren

Added subscriber: @dr.sybren

blender/blender-addons#89495 was marked as duplicate of this issue

blender/blender-addons#89495 was marked as duplicate of this issue
Author
Member

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

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

Added subscriber: @railla

Added subscriber: @railla

This issue was referenced by cf9cacd091

This issue was referenced by cf9cacd091e8cbabf9bfc91b0949bfea785968d4

This issue was referenced by 8f6a9c5176

This issue was referenced by 8f6a9c5176453c83187f90eba3a53a01a9c526d2

Changed status from 'Confirmed' to: 'Resolved'

Changed status from 'Confirmed' to: 'Resolved'
Campbell Barton self-assigned this 2021-06-29 13:10:01 +02:00
Thomas Dinges added this to the 3.0 milestone 2023-02-08 15:59:10 +01:00
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Reference: blender/blender#89526
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