fix: ScrollBar don't display when size is less

[18202781743]

it's consistent with dtkwidget.

pms: BUG-299771

Summary by Sourcery

Bug Fixes:

• Ensure ScrollBar is only displayed when the content is scrollable (size is less than 1.0)

[sourcery-ai]

Reviewer's Guide by Sourcery

The pull request modifies the visibility logic of the scroll bar in ScrollBar.qml. The scroll bar will now only be visible if the control.policy is not T.ScrollBar.AlwaysOff AND the control.size is less than 1.0.

No diagrams generated as the changes look simple and do not need a visual representation.

File-Level Changes

Change	Details	Files
The scroll bar visibility logic was updated to ensure it's hidden when the control size is less than 1.0, in addition to the existing policy check.	Modified the visible property to include a condition that checks if control.size is less than 1.0.	qt6/src/qml/ScrollBar.qml

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[deepin-ci-robot]

deepin pr auto review

关键摘要:

• 代码修改增加了对 control.size 的检查，确保滚动条仅在 control.size 小于 1.0 时可见。

是否建议立即修改:

• 否，这个修改看起来是有意为之，以避免在 control.size 非常小的情况下显示滚动条，这可能是一个合理的优化。但是，需要确保这个逻辑符合应用的整体设计，并且没有引入新的问题。如果 control.size 的值可能为 0 或负数，那么这个检查可能会在某些情况下导致滚动条始终不可见。建议添加对 control.size 的边界检查，确保其值在合理范围内。

[sourcery-ai]

Hey @18202781743 - I've reviewed your changes - here's some feedback:

Overall Comments:

• Consider adding a comment explaining why the size check was added.

Here's what I looked at during the review

• 🟢 General issues: all looks good
• 🟢 Security: all looks good
• 🟢 Testing: all looks good
• 🟢 Complexity: all looks good
• 🟢 Documentation: all looks good

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[deepin-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: 18202781743, BLumia

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• debian/deepin/OWNERS

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