风青山 f7397a0fee Remove confusing Control::is_top_level_control() ...

It's hard to tell at first glance under what circumstances `is_top_level_control()`
returns `true`. So it's hard to decide when to use this method. And it seems to be
just a helper function for `Control::get_root_parent_control()`.

`is_top_level_control()` seems to only return `true` during entry and exit of canvas.

2025-01-28 00:29:23 +08:00

129 KiB

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