forgot to add new file.

tabbox/qml/ShadowedSvgItem.qml

@@ -0,0 +1,52 @@
+/********************************************************************
+ KWin - the KDE window manager
+ This file is part of the KDE project.
+
+Copyright (C) 2013 Weng Xuetian <wengxt@gmail.com>
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*********************************************************************/
+
+import QtQuick 1.0
+import org.kde.plasma.core 0.1 as PlasmaCore
+
+Item {
+    property double leftMargin: background.margins.left + shadow.margins.left
+    property double topMargin: background.margins.top + shadow.margins.top
+    property double rightMargin: background.margins.right + shadow.margins.right
+    property double bottomMargin: background.margins.bottom + shadow.margins.bottom
+    property double centerWidth: background.width
+    property double centerHeight: background.height
+    property int centerTopMargin: shadow.margins.top
+    property int centerLeftMargin: shadow.margins.left
+
+    PlasmaCore.FrameSvgItem {
+        id: shadow
+        imagePath: "dialogs/background"
+        prefix: "shadow"
+        anchors.fill: parent
+
+        PlasmaCore.FrameSvgItem {
+            id: background
+            imagePath: "dialogs/background"
+            anchors {
+                fill: parent
+                leftMargin: shadow.margins.left
+                topMargin: shadow.margins.top
+                rightMargin: shadow.margins.right
+                bottomMargin: shadow.margins.bottom
+            }
+        }
+    }
+}