fix(mainwindow): Enhance mouse position checks for toolbar visibility

- Added additional checks to ensure the toolbar visibility logic accurately reflects whether the mouse is over the main window, even when other windows may overlap.
- Implemented logic to confirm that the topmost window under the cursor is the main window or the toolbar, preventing issues with overlapping windows affecting toolbar visibility.

This update improves user experience by ensuring the toolbar behaves correctly in multi-window scenarios.

bug: https://pms.uniontech.com/bug-view-334269.html

Author: dengzhongyuan365-dev

src/pin_screenshots/mainwindow.cpp

@@ -12,6 +12,7 @@
 #include <QDBusInterface>
 #include <QScreen>
 #include <QGuiApplication>
+#include <QApplication>
 #include <QClipboard>
 #include <QFileDialog>
 #include <QStandardPaths>
@@ -909,7 +910,20 @@ void MainWindow::checkToolbarVisibility()
     }
 
     const QPoint globalPos = QCursor::pos();
-    const bool mouseOnMainWindow = this->geometry().contains(globalPos);
+    
+    // 检查鼠标是否在当前窗口的几何范围内
+    bool mouseOnMainWindow = this->geometry().contains(globalPos);
+    // 防止多个贴图重叠时，底层窗口工具栏不消失的问题
+    if (mouseOnMainWindow) {
+        QWidget *topWidget = QApplication::widgetAt(globalPos);
+        if (topWidget) {
+            QWidget *topWindow = topWidget->window();
+            if (topWindow != this && topWindow != m_toolBar) {
+                mouseOnMainWindow = false;
+            }
+        }
+    }
+    
     const bool mouseOnToolBar = m_toolBar && m_toolBar->isVisible() && m_toolBar->geometry().contains(globalPos);
 
     bool mouseOnMenu = false;