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

This pull-request has been approved by: deepin-ci-robot

The full list of commands accepted by this bot can be found here.

Needs approval from an approver in each of these files:

• debian/deepin/OWNERS

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment

[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