sync: from linuxdeepin/dtkwidget

[deepin-ci-robot]

Synchronize source files from linuxdeepin/dtkwidget.

Source-pull-request: linuxdeepin/dtkwidget#602

[deepin-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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• debian/deepin/OWNERS

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[deepin-bot]

TAG Bot

New tag: 6.0.21
DISTRIBUTION: unstable
Suggest: synchronizing this PR through rebase #81

[deepin-bot]

TAG Bot

New tag: 6.0.22
DISTRIBUTION: unstable
Suggest: synchronizing this PR through rebase #95

[deepin-bot]

TAG Bot

New tag: 6.0.23
DISTRIBUTION: unstable
Suggest: synchronizing this PR through rebase #96

[deepin-bot]

TAG Bot

New tag: 6.0.24
DISTRIBUTION: unstable
Suggest: synchronizing this PR through rebase #100

[deepin-bot]

TAG Bot

New tag: 6.0.24.1
DISTRIBUTION: unstable
Suggest: synchronizing this PR through rebase #102

[deepin-bot]

TAG Bot

New tag: 6.0.25
DISTRIBUTION: unstable
Suggest: synchronizing this PR through rebase #104

[deepin-ci-robot]

deepin pr auto review

关键摘要:

• 在DGuiApplicationHelper::adjustColor函数调用中，参数+20可能是一个错误，应该是一个变量或者常量。
• Q_UNUSED(event)宏通常用于避免编译器警告，但在paintEvent函数中，event参数实际上被忽略了，这可能是一个误导。

是否建议立即修改:

• 是