fix: Refine background rendering logic for toolbar in recording modes

Updated the background rendering conditions to ensure the toolbar blur effect is applied correctly in recording and scrolling screenshot modes, enhancing visual consistency across different function types. This change improves the user experience by maintaining the intended appearance of the toolbar during various capture scenarios.

Author: dengzhongyuan365-dev

src/main_window.cpp

@@ -4785,21 +4785,32 @@ void MainWindow::paintEvent(QPaintEvent *event)
     painter.setRenderHint(QPainter::Antialiasing, true);
 
     // 绘制背景图片，用于工具栏模糊效果
-    // 原条件只在截图模式和2D模式下绘制，导致录屏/滚动截图模式下工具栏模糊失效
-    if (status::shot == m_functionType || status::record == m_functionType || status::scrollshot == m_functionType || m_hasComposite == false) {
-        //        qCDebug(dsrApp) << "function: " << __func__ << " ,line: " << __LINE__;
+    // Qt6+XCB: widget是逻辑大小(m_backgroundRect)，pixmap是物理大小
+    QRect backgroundRect;
+    if (Utils::isQt6XcbEnv) {
+        backgroundRect = QRect(0, 0, m_backgroundRect.width(), m_backgroundRect.height());
+    } else {
+        backgroundRect = QRect(0, 0, rootWindowRect.width(), rootWindowRect.height());
+    }
+    
+    if (status::shot == m_functionType || m_hasComposite == false) {
+        // 截图模式或2D模式：全屏绘制背景
         painter.setRenderHint(QPainter::Antialiasing, true);
-        
-        // Qt6+XCB: widget是逻辑大小(m_backgroundRect)，pixmap是物理大小
-        QRect backgroundRect;
-        if (Utils::isQt6XcbEnv) {
-            backgroundRect = QRect(0, 0, m_backgroundRect.width(), m_backgroundRect.height());
-        } else {
-            backgroundRect = QRect(0, 0, rootWindowRect.width(), rootWindowRect.height());
-        }
-        
         m_backgroundPixmap.setDevicePixelRatio(m_pixelRatio);
         painter.drawPixmap(backgroundRect, m_backgroundPixmap);
+    } else if (status::record == m_functionType || status::scrollshot == m_functionType) {
+        // 录屏/滚动截图模式：只在工具栏区域绘制背景
+        // 不全屏绘制，避免影响鼠标穿透
+        if (m_toolBar && m_toolBar->isVisible()) {
+            QRect toolBarRect = m_toolBar->geometry();
+            toolBarRect.adjust(-20, -20, 20, 20);
+            
+            painter.setRenderHint(QPainter::Antialiasing, true);
+            m_backgroundPixmap.setDevicePixelRatio(m_pixelRatio);
+            painter.setClipRect(toolBarRect);
+            painter.drawPixmap(backgroundRect, m_backgroundPixmap);
+            painter.setClipping(false);
+        }
     }