fix: adapt checkbox state handling for Qt6

[18202781743]

Summary

Qt6 中 QCheckBox 的复选状态信号签名由 stateChanged(int) 变为 checkStateChanged(Qt::CheckState)。dtkwidget 中仍有 3 处 Qt6 分支使用旧式 int 参数：

1. dprintpreviewdialog.cpp duplex 复选框使用字符串式 SIGNAL(checkStateChanged(int))，在 Qt6 下匹配不到信号，产生 QObject::connect: No such signal QCheckBox::checkStateChanged(int) 警告且连接静默失败。
2. dprintpreviewdialog.cpp sidebyside 复选框 lambda 参数为 int，status == 0 魔法数字。
3. dsettingswidgetfactory.cpp 复选框工厂 lambda 参数为 int。

本次统一改为 Qt6 正确的 Qt::CheckState 类型，并将 duplex 的字符串式连接改为函数指针 lambda 连接。

Changes

• dprintpreviewdialog.cpp: duplex 复选框改为 &DCheckBox::checkStateChanged + lambda（显式 int(state) 转换传给 _q_checkStateChanged）；sidebyside 复选框参数改 Qt::CheckState，status == 0 改为 status == Qt::Unchecked。
• dsettingswidgetfactory.cpp: 复选框工厂 lambda 参数改为 Qt::CheckState。

Qt5 分支（stateChanged(int)）保持不变。已用 Qt6 构建验证（dtk6widget 100% 编译通过，无新增告警）。

Test

• 打印预览对话框切换"并排显示"与"双面打印"复选框，验证行为正常、无 No such signal 警告
• 设置项工厂复选框勾选/取消正确写回 DSettingsOption
• Qt5 构建回归无变化

Summary by Sourcery

Correct checkbox state handling across Qt6 widget integrations while maintaining Qt5 compatibility.

Bug Fixes:

• Fix Qt6 checkbox signal handling in print preview and settings widgets so checkbox changes connect and update reliably without invalid-signal warnings.

Enhancements:

• Use Qt's typed checkbox state handling and explicit unchecked-state comparison while preserving Qt5 behavior.

[sourcery-ai]

Reviewer's guide (collapsed on small PRs)

Reviewer's Guide

The PR fixes Qt6 checkbox handling by adopting the checkStateChanged(Qt::CheckState) signature, replacing the invalid duplex string connection with a typed lambda connection, and retaining Qt5-specific behavior through conditional compilation.

Sequence diagram for Qt6 checkbox state handling

sequenceDiagram
    participant CheckBox as QCheckBox
    participant Preview as DPrintPreviewDialogPrivate
    participant SettingsOption as DSettingsOption

    CheckBox->>Preview: checkStateChanged(Qt::CheckState)
    Preview->>Preview: _q_checkStateChanged(int(state))
    CheckBox->>Preview: checkStateChanged(Qt::CheckState)
    Preview->>Preview: status == Qt::Unchecked
    CheckBox->>SettingsOption: checkStateChanged(Qt::CheckState)
    SettingsOption->>SettingsOption: setValue(status == Qt::Checked)

Loading

File-Level Changes

Change	Details	Files
Use the Qt6 checkbox signal signature and enum type throughout affected connections.	Change Qt6 side-by-side checkbox lambdas to accept Qt::CheckState. Replace the unchecked-state magic number with Qt::Unchecked. Update the settings widget factory lambda to accept Qt::CheckState and preserve boolean value mapping.	src/widgets/dprintpreviewdialog.cpp src/widgets/dsettingswidgetfactory.cpp
Replace the failing Qt6 string-based duplex signal connection with a typed connection and compatibility conversion.	Connect DCheckBox::checkStateChanged via function pointer and lambda. Convert Qt::CheckState explicitly to int before invoking the existing handler. Leave Qt5 stateChanged(int) connections unchanged under conditional compilation.	src/widgets/dprintpreviewdialog.cpp

---

Tips and commands

Interacting with Sourcery

• Trigger a new review: Comment @sourcery-ai review on the pull request.
• Continue discussions: Reply directly to Sourcery's review comments.
• Generate a GitHub issue from a review comment: Ask Sourcery to create an
  issue from a review comment by replying to it. You can also reply to a
  review comment with @sourcery-ai issue to create an issue from it.
• Generate a pull request title: Write @sourcery-ai anywhere in the pull
  request title to generate a title at any time. You can also comment
  @sourcery-ai title on the pull request to (re-)generate the title at any time.
• Generate a pull request summary: Write @sourcery-ai summary anywhere in
  the pull request body to generate a PR summary at any time exactly where you
  want it. You can also comment @sourcery-ai summary on the pull request to
  (re-)generate the summary at any time.
• Generate reviewer's guide: Comment @sourcery-ai guide on the pull
  request to (re-)generate the reviewer's guide at any time.
• Resolve all Sourcery comments: Comment @sourcery-ai resolve on the
  pull request to resolve all Sourcery comments. Useful if you've already
  addressed all the comments and don't want to see them anymore.
• Dismiss all Sourcery reviews: Comment @sourcery-ai dismiss on the pull
  request to dismiss all existing Sourcery reviews. Especially useful if you
  want to start fresh with a new review - don't forget to comment
  @sourcery-ai review to trigger a new review!

Customizing Your Experience

Access your dashboard to:

• Enable or disable review features such as the Sourcery-generated pull request
  summary, the reviewer's guide, and others.
• Change the review language.
• Add, remove or edit custom review instructions.
• Adjust other review settings.

Getting Help

• Contact our support team for questions or feedback.
• Visit our documentation for detailed guides and information.
• Keep in touch with the Sourcery team by following us on X/Twitter, LinkedIn or GitHub.

[sourcery-ai]

Hey - I've found 1 issue

Prompt for AI Agents

Please address the comments from this code review:

## Individual Comments

### Comment 1
<location path="src/widgets/dsettingswidgetfactory.cpp" line_range="278" />
<code_context>
     option->connect(rightWidget, &QCheckBox::stateChanged,
 #endif
-    option, [ = ](int status) {
+    option, [ = ](Qt::CheckState status) {
         option->setValue(status == Qt::Checked);
     });
</code_context>
<issue_to_address>
**issue (bug_risk):** The Qt5 branch still connects `QCheckBox::stateChanged(int)`, but the lambda now requires `Qt::CheckState`; the new-style connection is type-incompatible and the Qt5 build fails to compile.

**Triggers:** When building with Qt5, where `QCheckBox::stateChanged` has the `int` parameter.

**Suggested fix:** Keep the lambda parameter as `int` in the Qt5 branch, or add a Qt-version-specific lambda so Qt5 receives `int` and Qt6 receives `Qt::CheckState`.

```suggestion
#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
    option, [ = ](Qt::CheckState status) {
#else
    option, [ = ](int status) {
#endif
```
</issue_to_address>

---

Sourcery is free for open source - if you like our reviews please consider sharing them ✨

• X
• Mastodon
• LinkedIn
• Facebook

_{Help me be more useful! Please click 👍 or 👎 on each comment and I'll use the feedback to improve your reviews.}

[deepin-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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

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

Details

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