fix: modify the background blur effect

Modify the background blur effect of the full-screen application group

Issue: linuxdeepin/developer-center#9374

qml/FolderGridViewPopup.qml

@@ -29,7 +29,10 @@ Popup {
     // anchors.centerIn: parent // seems dtkdeclarative's Popup doesn't have anchors.centerIn
 
     width: cs * 4 + 20 /* padding */
-    height: cs * 3 + 130 /* title height*/
+
+    // TODO: 经验证发现：Poppu窗口高度为奇数时，会多显示一个像素的外边框；为偶数时不会显示
+    // 因此，这里需要保证高度是偶数来确保Popup窗口没有外边框
+    height: (cs * 3) % 2 === 0 ? (cs * 3) : (cs * 3 + 1) + 130 /* title height*/
     x: (parent.width - width) / 2
     y: (parent.height - height) / 2
 
@@ -315,6 +318,7 @@ Popup {
     }
     background: FloatingPanel {
         radius: isWindowedMode ? 12 : 36
+        blurMultiplier: 5.0
         backgroundColor: Palette {
             normal: Qt.rgba(1.0, 1.0, 1.0, 0.2)
             normalDark: Qt.rgba(1.0, 1.0, 1.0, 0.2)