Add Shift-key line snapping for horizontal/vertical segments

[Si-KongShuo]

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• I have searched the X-AnyLabeling issues and found no similar feature requests.

Description

我希望在标注线条的时候，按Shift能能画竖直或者水平线段，在一些测量距离的项目里或许有作用

Use case

No response

Additional

No response

Are you willing to submit a PR?

• Yes I'd like to help by submitting a PR!

[CVHub520]

Hello @Si-KongShuo, thanks a lot for your suggestion regarding drawing vertical or horizontal line segments while holding Shift! That's a great idea for precision labeling.

We'll definitely keep this in mind for consideration in upcoming versions of X-AnyLabeling. Please stay tuned for future updates! ✨

[CVHub520]

Hello @Si-KongShuo,

Thanks again for your excellent suggestion regarding Shift-key line snapping for horizontal/vertical segments! We're thrilled to let you know that this feature has actually been implemented and is now available in the latest version of X-AnyLabeling.

Please feel free to update and give it a try – we hope it significantly enhances your precision labeling workflows! ✨