Added the ability to configure pixels_per_point to allow for egui to properly scale the UI

[jacobsky]

This should fix the issue with pixels per point not properly being set by the UI. This allows the individual control nodes to properly scale egui as needed.

Also made some minor changes to the function call of paint_shapes, since it is already using &mut self, rather than passing the texture into the method, the method queries for it directly.

Also added some additional widgets to the example to test the mouse position is correct regardless of the pixels_per_point setting.

Let me know if you have any questions about the changes.

[jacobsky]

Found an issue related to the input handling. when adding the conversion I removed the offset in the coordinates and didn't put it back. I'll work on fixing that.

[setzer22]

Looks good to me!

Something that may be a bit of a limitation is that I don't see a way to update the pixels_per_point at runtime though. The value is read at _ready and not set again.

Maybe we could add a set_pixels_per_point public method on GodotEgui so that it can be set programatically? This could be useful if the game has an options panel to control ui scale for accessibility

What do you think?

[jacobsky]

Issue has been fixed as of bced470, this PR should be ready for review/merge

[jacobsky]

Looks good to me!

Something that may be a bit of a limitation is that I don't see a way to update the pixels_per_point at runtime though. The value is read at _ready and not set again.

Maybe we could add a set_pixels_per_point public method on GodotEgui so that it can be set programatically? This could be useful if the game has an options panel to control ui scale for accessibility

What do you think?

Ah, I hadn't considered that. I'll add that. I think that would make a lot of sense to allow to configure at runtime. Like you said, accessibility options are pretty important, especially when it comes to configuring text output.

[jacobsky]

@setzer22 I've added and tested the changes. I also included a fun little demo of the GUI actively resizing every frame to showcase it's usage.