Sybren A. Stüvel
59401d9c41
We now draw the GUI using OpenGL in Python. This allows for much more control on the Python side. It's still a prototype, and allows us to test the features without depending on C support in Blender itself. GUI code was taken from the Asset Flinger addon.
64 lines
1.6 KiB
Python
64 lines
1.6 KiB
Python
"""Manages the asyncio loop."""
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import asyncio
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import traceback
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import bpy
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def kick_async_loop(*args):
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loop = asyncio.get_event_loop()
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if loop.is_closed():
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print('{}: loop closed, stopping'.format(__name__))
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stop_async_loop()
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return
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all_tasks = asyncio.Task.all_tasks()
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if not all_tasks:
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print('{}: no more scheduled tasks, stopping'.format(__name__))
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stop_async_loop()
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return
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if all(task.done() for task in all_tasks):
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print('{}: all tasks are done, fetching results and stopping.'.format(__name__))
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for task in all_tasks:
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# noinspection PyBroadException
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try:
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task.result()
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except asyncio.CancelledError:
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# No problem, we want to stop anyway.
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pass
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except Exception:
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print('{}: resulted in exception'.format(task))
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traceback.print_exc()
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stop_async_loop()
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return
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# Perform a single async loop step
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async def do_nothing():
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pass
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loop.run_until_complete(do_nothing())
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def async_loop_handler() -> callable:
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name = kick_async_loop.__name__
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for handler in bpy.app.handlers.scene_update_pre:
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if getattr(handler, '__name__', '') == name:
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return handler
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return None
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def ensure_async_loop():
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if async_loop_handler() is not None:
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return
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bpy.app.handlers.scene_update_pre.append(kick_async_loop)
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def stop_async_loop():
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handler = async_loop_handler()
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if handler is None:
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return
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bpy.app.handlers.scene_update_pre.remove(handler)
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