Improving the resizing by dragging of the render window of the image dispalay plugin

[HankWong-guangdong]

Description

Make resizing the render window in image_display by dragging on the left bottom corner and the right bottom corner to be as easy as resizing by dragging on the left top corner and the right top corner.

Checklist

[rhaschke]

Thanks for providing this PR. Could you please update the PR title to something meaningful, i.e. reflecting the actual problem being solved? Also, please remove irrelevant items from the checklist in the main PR description.

[rhaschke]

I changed this to draft as you seem to still be working on it. Please mark as "ready for review" if it is. Thanks.

[rhaschke]

You might want to install pre-commit as a git pre-commit hook to automatically perform formatting checks:

pip install pre-commit
pre-commit install

[HankWong-guangdong]

Thanks for providing this PR. Could you please update the PR title to something meaningful, i.e. reflecting the actual problem being solved? Also, please remove irrelevant items from the checklist in the main PR description.

Hello！I want to ask what you think about the PR. Would the PR be merged?

[rhaschke]

Sorry, I didn't have time to look into this PR yet. I'm maintaining rviz on a voluntary basis in my free time!

[HankWong-guangdong]

Sorry, I didn't have time to look into this PR yet. I'm maintaining rviz on a voluntary basis in my free time!

It doesn’t matter. Please consider the PR when you have time. Thank you!

[rhaschke]

I tried your PR and couldn't notice any difference regarding panel resizing.

[rhaschke]

@HankWong-guangdong, could you please clarify what should have changed by this PR? I don't notice any change in behavior.

[HankWong-guangdong]

@HankWong-guangdong, could you please clarify what should have changed by this PR? I don't notice any change in behavior.

I found that the improvement for the panel resizing is little，I want to continue to improve the panel resizing.