fix: skip popup position clamping on Wayland

[yixinshark]

Summary

• Skip global screen-bound popup clamping on Wayland.
• Preserve Qt/Wayland popup placement relative to the parent surface.
• Keep the existing X11 position adjustment unchanged.

Test plan

• Tested with dde-shell dock context menu on Wayland/Treeland with popup blur enabled.
• Confirmed the menu opens at the expected pointer position.

Pms: BUG-295233

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[deepin-bot]

TAG Bot

New tag: 6.7.44
DISTRIBUTION: unstable
Suggest: synchronizing this PR through rebase #641

[deepin-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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

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[yixinshark]

/forcemerge

[deepin-ci-robot]

deepin pr auto review

★ 总体评分：100分

■ 【总体评价】

代码准确修复了Wayland平台下弹窗定位异常及边界计算错误问题。
逻辑严谨且无任何安全风险，符合满分标准。

■ 【详细分析】

• 1.语法逻辑（完全正确）✓

在 DPopupWindowHandle::adjustPopupPosition() 函数入口处增加了对Wayland平台的判断，直接返回交由合成器处理，完美规避了X11专属位置调整逻辑在Wayland下的越界与翻转错误。将 screen->availableGeometry() 替换为 screen->geometry()，修正了包含任务栏等区域在内的完整屏幕边界计算基准，逻辑严密无误。
建议：保持现有逻辑，无需额外修改。

• 2.代码质量（良好）✓

代码改动极其精简且直击痛点，两处修改分别对应两个核心BUG点。平台判断前置，避免了后续无意义的尺寸获取与屏幕计算，符合“早返回”的编码规范。
建议：建议在新增的Wayland平台判断语句上方补充单行注释，说明跳过调整的具体原因以提升可读性。

• 3.代码性能（高效）✓

新增的 DGuiApplicationHelper::testAttribute 调用开销极小。在Wayland环境下直接跳过后续的尺寸获取、屏幕遍历及矩形边界计算，显著减少了不必要的CPU计算开销。geometry() 与原 availableGeometry() 接口调用性能一致。
建议：无需优化。

• 4.代码安全（存在0个安全漏洞）✓

漏洞对比统计：新增漏洞 0 个，减少漏洞 0 个，持平 0 个
本次修改仅涉及UI坐标计算与平台分支逻辑，不涉及内存操作、外部输入解析、命令执行或权限变更，无任何安全攻击面。
建议：无需修复。

■ 【改进建议代码示例】

--- a/src/private/dpopupwindowhandle.cpp
+++ b/src/private/dpopupwindowhandle.cpp
@@ -206,6 +206,9 @@ void DPopupWindowHandle::adjustPopupPosition()
     if (!isEnabled() ||!m_popupWin)
         return;
 
+    // Wayland平台下跳过位置调整，交由合成器处理以避免定位错乱
+    if (DGuiApplicationHelper::testAttribute(DGuiApplicationHelper::IsWaylandPlatform))
+        return;
+
     const QSize size = m_popupWin->size();
     if (size.width() <= 0 || size.height() <= 0)
         return;
@@ -235,7 +238,8 @@ void DPopupWindowHandle::adjustPopupPosition()
     if (!screen)
         return;
 
-    const QRectF bounds(screen->availableGeometry());
+    // 使用完整屏幕几何尺寸进行边界计算，排除任务栏区域导致的基准错误
+    const QRectF bounds(screen->geometry());
     QRectF rect(QPointF(m_popupWin->position()), QSizeF(size));
 
     // Horizontal flip for submenus:

[deepin-bot]

This pr force merged! (status: unstable)