Add crosshair cursor prototype example using blitting - #31310

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Thank you for your interest in contributing to Matplotlib! Our existing Cursor widget already has the option to use blitting. Am I missing some context for why you created this example?

I suppose this is in the context of #30515. @konangisireesha3-del is this for exploration? We don't need this as an example in our docs.

Hi @timhoffm and @rcomer,
Thanks for the feedback!

Yes -this PR was mainly created for exploration in the context of #30515.
My goal was not to introduce a new example for the documentation, but to better understand how efficient cursor updates can be implemented using the current blitting mechanism. In particular, I wanted to experiment with how partial redraws work in practice (via restore region and blit) and how they compare to full figure redraws.
This helped me understand the current rendering pipeline and the limitations that motivate the overlay/layered rendering discussion.
If this is not suitable as a documentation example, I’m happy to:

• close the PR, or
• keep it as a reference for discussion, or
• adapt it in a way that would be more useful to the project

Please let me know what would be most appropriate.
Thanks!

Let's close this.

@konangisireesha3-del it's great that you are making examples for your own understanding. I think that is an excellent way to learn. However, pull requests are intended for changes you actually want to put into the library. If you want to share your examples, consider making a gist and sharing the link to that in the conversation.