fix(reader): close FindWidget before entering slide show mode

[Resurgamz]

Root Cause Analysis

When entering slideshow mode via CentralDocPage::openSlide(), the search box (FindWidget) is not closed. FindWidget is a DFloatingWidget with high z-order; when the window goes fullscreen and triggers a resize event, FindWidget::eventFilter calls updatePosition() which executes show() + raise(), causing the search box to float on top of the slideshow.

Key evidence:

• reader/uiframe/CentralDocPage.cpp:699-704 — openSlide() lacks closeFindWidget() call
• reader/widgets/FindWidget.cpp:50-55 — updatePosition() calls show() + raise()
• reader/uiframe/CentralDocPage.cpp:280 — onTabChanged() already correctly calls closeFindWidget()

Fix

Add docSheet->closeFindWidget(); before creating SlideWidget in openSlide(), consistent with the existing pattern in onTabChanged().

Change Safety Assessment

Code Safety

• Risk Level: Low
• Only one line added — calling existing method DocSheet::closeFindWidget(), no new symbols introduced
• closeFindWidget() is idempotent (no-op when FindWidget doesn't exist); guarded by m_findWidget.isNull() internally
• Consistent with onTabChanged() pattern at CentralDocPage.cpp:280

Business Impact Scope

Affects the slideshow feature in Document Viewer. When a user opens the search box and then enters slideshow mode (right-click menu or F5), the search box will now be properly hidden. No other features or user scenarios are affected.

Verification Suggestion

1. Open a document in Document Viewer, press Ctrl+F to show the search box, then press F5 to enter slideshow — verify the search box is no longer visible
2. Exit slideshow and verify search box functionality still works normally

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根因分析

CentralDocPage::openSlide() 进入幻灯片放映模式时，未调用 closeFindWidget() 关闭搜索框。FindWidget 是 DFloatingWidget，z-order 高于普通 widget；窗口全屏触发 resize 事件后，FindWidget::eventFilter 调用 updatePosition() 执行 show() + raise()，导致搜索框浮在放映画面之上。

关键证据：

• reader/uiframe/CentralDocPage.cpp:699-704 — openSlide() 缺少 closeFindWidget() 调用
• reader/widgets/FindWidget.cpp:50-55 — updatePosition() 调用 show() + raise()
• reader/uiframe/CentralDocPage.cpp:280 — onTabChanged() 已正确调用 closeFindWidget()

修复方案

在 openSlide() 创建 SlideWidget 之前新增 docSheet->closeFindWidget();，与 onTabChanged() 中的已有模式一致。

改动安全评估

代码安全评估

• 风险等级：低
• 仅新增一行已有方法调用 DocSheet::closeFindWidget()，无新增符号
• closeFindWidget() 是幂等操作（FindWidget 不存在时为空操作），内部有 m_findWidget.isNull() 保护
• 与 onTabChanged()（CentralDocPage.cpp:280）中的已有模式完全一致

业务影响范围

影响文档查看器的幻灯片放映功能。用户打开搜索框后进入幻灯片放映（右键菜单或 F5），搜索框将被正确隐藏。不影响其他功能模块和用户场景。

验证建议

1. 在文档查看器中打开文档，按 Ctrl+F 显示搜索框，再按 F5 进入幻灯片放映——验证搜索框不再显示
2. 退出放映后验证搜索框功能正常

Summary by Sourcery

Bug Fixes:

• Close the document search widget before entering slideshow mode so it cannot remain visible over the presentation.

[sourcery-ai]

Reviewer's guide (collapsed on small PRs)

Reviewer's Guide

Fixes slideshow entry so an open FindWidget is hidden before SlideWidget creation, preventing it from resurfacing above fullscreen slideshow content while preserving existing document and search behavior.

Sequence diagram for closing FindWidget before slideshow mode

sequenceDiagram
    participant User
    participant CentralDocPage
    participant DocSheet
    participant FindWidget
    participant SlideWidget

    User->>CentralDocPage: openSlide()
    CentralDocPage->>DocSheet: closeFindWidget()
    DocSheet->>FindWidget: close()
    CentralDocPage->>SlideWidget: new SlideWidget(getCurSheet())
    Note over FindWidget,SlideWidget: FindWidget remains hidden during slideshow

Loading

File-Level Changes

Change	Details	Files
Close the document search widget before entering slideshow mode.	Invoke the existing idempotent cleanup method after validating the current document and before constructing the slideshow widget. Prevent resize-driven repositioning from making the high-z-order search box visible over the slideshow.	reader/uiframe/CentralDocPage.cpp

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[deepin-ci-robot]

deepin pr auto review

🤖 AI 代码审查报告

总体评分： 100 分 (通过阈值: 70分)

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📊 总体评价

项目	结果
审查结论	代码审查通过
评分详情	总体评分 100 分，大于 70 分通过阈值，代码质量符合要求。本次变更为单行 Bug 修复，在进入幻灯片放映模式前关闭搜索框，修复方案合理且与已有代码模式一致。

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🔍 详细分析

1. 语法逻辑 ✅

评价： 优秀 ✅ 通过

潜在问题：
✅ 未发现明显问题

建议： 语法正确，逻辑清晰。新增的 docSheet->closeFindWidget() 调用位于 docSheet 空指针检查之后，调用顺序合理——先关闭搜索框再创建幻灯片组件。与 onTabChanged() 中的已有模式一致。

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2. 代码质量 ✅

评价： 优秀 ✅ 通过

潜在问题：
✅ 未发现明显问题

建议： 代码结构清晰，注释完整。变更最小化（仅1行），方法名 closeFindWidget() 自解释，无需额外注释。与 onTabChanged()（CentralDocPage.cpp:280）中的已有模式完全一致，无重复代码引入。

---

3. 代码性能 ✅

评价： 优秀 ✅ 通过

潜在问题：
✅ 未发现明显问题

建议： 性能良好，资源使用合理。closeFindWidget() 是轻量级 UI 操作（关闭浮动窗口），仅在进入幻灯片放映模式时调用一次，无性能影响。

---

4. 代码安全 🔒

评价： 优秀 ✅ 通过

🔐 发现 0 个安全漏洞

安全漏洞详情：
✅ 未发现安全漏洞

建议： 无安全风险。本次变更仅调用已有的 UI 组件关闭方法，不涉及用户输入处理、外部数据交互、文件操作或网络通信，不存在安全攻击面。

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💡 改进建议代码示例

// 修复代码已在 PR 中正确实现，无需额外修改
// reader/uiframe/CentralDocPage.cpp - openSlide() 方法
void CentralDocPage::openSlide()
{
    DocSheet *docSheet = getCurSheet();
    if (docSheet && docSheet->opened() && m_slideWidget == nullptr) {
        docSheet->closeFindWidget();  // 新增：关闭搜索框
        m_slideWidget = new SlideWidget(getCurSheet());
    }
}

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本报告由 AI 代码审查工具自动生成

[deepin-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: max-lvs, Resurgamz

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
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[Resurgamz]

/merge