目前只支持右下角拉伸尺寸，希望能支持不同方位的拉伸 #814
Description
If you have a feature request, please try to implement it before requesting it.
This is free software and the author is busy with other projects.
Is your feature request related to a problem? Please describe.
A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
Describe the solution you'd like
A clear and concise description of what you want to happen.
Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered.
Additional context
Add any other context or screenshots about the feature request here.