fix: fix crop view displaying issue on iOS 26

[guoyingtao]

Summary by CodeRabbit

• Bug Fixes
  • Improved stability by preventing layout operations when the crop area has no valid size. This helps avoid potential errors during image cropping.

[coderabbitai]

Walkthrough

A guard statement was added in the viewDidLayoutSubviews() method of CropViewController.swift to ensure that layout initialization only proceeds if the cropView has non-zero bounds. If the bounds are zero, the method exits early, preventing further layout and transformation operations.

Changes

File(s)	Change Summary
Sources/Mantis/CropViewController/CropViewController.swift	Added a guard in viewDidLayoutSubviews() to skip layout logic if cropView bounds are zero.

Poem

A careful check in layout's flow,
If bounds are zero, we now say no.
No needless work, no wasted run,
Just tidy code when size is none.
A hop ahead, our crops now thrive—
With smarter views, our apps arrive! 🥕

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📜 Recent review details

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📥 Commits

Reviewing files that changed from the base of the PR and between fbe63dd and 571aa01.

📒 Files selected for processing (1)

• Sources/Mantis/CropViewController/CropViewController.swift (1 hunks)

🧰 Additional context used

🧠 Learnings (2)

📓 Common learnings

Learnt from: guoyingtao
PR: guoyingtao/Mantis#462
File: Sources/Mantis/SwiftUIView/ImageCropper.swift:145-152
Timestamp: 2025-06-19T08:13:01.113Z
Learning: In the Mantis SwiftUI implementation, the user prefers to keep the CropAction enum minimal with only the .crop case active for now, rather than implementing all possible crop actions upfront.

Sources/Mantis/CropViewController/CropViewController.swift (1)

Learnt from: guoyingtao
PR: guoyingtao/Mantis#462
File: Sources/Mantis/SwiftUIView/ImageCropper.swift:145-152
Timestamp: 2025-06-19T08:13:01.113Z
Learning: In the Mantis SwiftUI implementation, the user prefers to keep the CropAction enum minimal with only the .crop case active for now, rather than implementing all possible crop actions upfront.

🔇 Additional comments (1)

Sources/Mantis/CropViewController/CropViewController.swift (1)

190-192: Good defensive programming to prevent layout issues with zero bounds.

This guard statement effectively prevents layout initialization when the cropView has invalid (zero) bounds, which is a common timing issue in iOS view lifecycle. The early return prevents potential visual glitches or incorrect layout calculations that could occur when performing operations on a view with no size.

The fix aligns well with the PR objective of resolving display issues on iOS 26, likely caused by changes in view lifecycle timing in newer iOS versions.

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