diff --git a/kwin/tabbox/declarative.cpp b/kwin/tabbox/declarative.cpp
index 3bdcfac..2e4e234 100644
--- a/kwin/tabbox/declarative.cpp
+++ b/kwin/tabbox/declarative.cpp
@@ -179,16 +179,31 @@ void DeclarativeView::showEvent(QShowEvent *event)
 
 void DeclarativeView::resizeEvent(QResizeEvent *event)
 {
-    m_frame->resizeFrame(event->size());
-    if (Plasma::Theme::defaultTheme()->windowTranslucencyEnabled() && !tabBox->embedded()) {
-        // blur background
-        Plasma::WindowEffects::enableBlurBehind(winId(), true, m_frame->mask());
-        Plasma::WindowEffects::overrideShadow(winId(), true);
-    } else if (tabBox->embedded()) {
+    if (tabBox->embedded()) {
         Plasma::WindowEffects::enableBlurBehind(winId(), false);
-    } else {
-        // do not trim to mask with compositing enabled, otherwise shadows are cropped
-        setMask(m_frame->mask());
+    }
+    else {
+        QString maskImagePath = rootObject()->property("maskImagePath").toString();
+        if (maskImagePath.isEmpty()) {
+            clearMask();
+            Plasma::WindowEffects::enableBlurBehind(winId(), false);
+        } else {
+            double maskWidth = rootObject()->property("maskWidth").toDouble();
+            double maskHeight = rootObject()->property("maskHeight").toDouble();
+            int maskTopMargin = rootObject()->property("maskTopMargin").toInt();
+            int maskLeftMargin = rootObject()->property("maskLeftMargin").toInt();
+            m_frame->setImagePath(maskImagePath);
+            m_frame->resizeFrame(QSizeF(maskWidth, maskHeight));
+            QRegion mask = m_frame->mask().translated(maskLeftMargin, maskTopMargin);
+            if (Plasma::Theme::defaultTheme()->windowTranslucencyEnabled()) {
+                // blur background
+                Plasma::WindowEffects::enableBlurBehind(winId(), true, mask);
+                Plasma::WindowEffects::overrideShadow(winId(), true);
+            } else {
+                // do not trim to mask with compositing enabled, otherwise shadows are cropped
+                setMask(mask);
+            }
+        }
     }
     QDeclarativeView::resizeEvent(event);
 }
@@ -208,7 +223,7 @@ void DeclarativeView::hideEvent(QHideEvent *event)
 
 bool DeclarativeView::x11Event(XEvent *e)
 {
-    if (tabBox->embedded() && 
+    if (tabBox->embedded() &&
         (e->type == ButtonPress || e->type == ButtonRelease || e->type == MotionNotify)) {
         XEvent ev;
 
diff --git a/kwin/tabbox/qml/CMakeLists.txt b/kwin/tabbox/qml/CMakeLists.txt
index d4bc863..c3b3ee7 100644
--- a/kwin/tabbox/qml/CMakeLists.txt
+++ b/kwin/tabbox/qml/CMakeLists.txt
@@ -22,5 +22,5 @@ install( FILES clients/thumbnails/metadata.desktop   DESTINATION ${SERVICES_INST
 install( FILES clients/window_strip/metadata.desktop DESTINATION ${SERVICES_INSTALL_DIR}/${KWIN_NAME} RENAME kwin4_window_switcher_window_strip.desktop )
 
 # install additional icon tabbox into those that need it
-install (FILES IconTabBox.qml DESTINATION ${DATA_INSTALL_DIR}/${KWIN_NAME}/tabbox/big_icons/contents/ui)
+install (FILES IconTabBox.qml ShadowedSvgItem.qml DESTINATION ${DATA_INSTALL_DIR}/${KWIN_NAME}/tabbox/big_icons/contents/ui)
 install (FILES IconTabBox.qml DESTINATION ${DATA_INSTALL_DIR}/${KWIN_NAME}/tabbox/small_icons/contents/ui)
diff --git a/kwin/tabbox/qml/clients/big_icons/contents/ui/main.qml b/kwin/tabbox/qml/clients/big_icons/contents/ui/main.qml
index 7115b7f..a81e2d6 100644
--- a/kwin/tabbox/qml/clients/big_icons/contents/ui/main.qml
+++ b/kwin/tabbox/qml/clients/big_icons/contents/ui/main.qml
@@ -26,10 +26,15 @@ Item {
     property int screenWidth : 0
     property int screenHeight : 0
     property int imagePathPrefix: (new Date()).getTime()
-    property int optimalWidth: (icons.iconSize + icons.margins.left + icons.margins.right) * icons.count + background.margins.left + background.margins.bottom
-    property int optimalHeight: icons.iconSize + icons.margins.top + icons.margins.bottom + background.margins.top + background.margins.bottom + 40
+    property int optimalWidth: (icons.iconSize + icons.margins.left + icons.margins.right) * icons.count + background.leftMargin + background.bottomMargin
+    property int optimalHeight: icons.iconSize + icons.margins.top + icons.margins.bottom + background.topMargin + background.bottomMargin + 40
     property bool canStretchX: false
     property bool canStretchY: false
+    property string maskImagePath: "dialogs/background"
+    property double maskWidth: background.centerWidth
+    property double maskHeight: background.centerHeight
+    property int maskTopMargin: background.centerTopMargin
+    property int maskLeftMargin: background.centerLeftMargin
     width: Math.min(Math.max(screenWidth * 0.3, optimalWidth), screenWidth * 0.9)
     height: Math.min(Math.max(screenHeight * 0.05, optimalHeight), screenHeight * 0.5)
 
@@ -42,24 +47,22 @@ Item {
         icons.modelChanged();
     }
 
-    PlasmaCore.FrameSvgItem {
+    ShadowedSvgItem {
         id: background
         anchors.fill: parent
-        imagePath: "dialogs/background"
     }
 
     IconTabBox {
         id: icons
         iconSize: 128
-        height: iconSize + background.margins.top + background.margins.bottom
+        height: iconSize + background.topMargin + background.bottomMargin
         anchors {
             top: parent.top
             left: parent.left
             right: parent.right
-            topMargin: background.margins.top
-            rightMargin: background.margins.right
-            bottomMargin: background.margins.bottom
-            leftMargin: background.margins.left
+            topMargin: background.topMargin
+            rightMargin: background.rightMargin
+            leftMargin: background.leftMargin
         }
     }
     Item {
@@ -69,9 +72,9 @@ Item {
             left: parent.left
             right: parent.right
             bottom: parent.bottom
-            leftMargin: background.margins.left
-            rightMargin: background.margins.right
-            bottomMargin: background.margins.bottom
+            leftMargin: background.leftMargin
+            rightMargin: background.rightMargin
+            bottomMargin: background.bottomMargin
         }
         Text {
             function constrainWidth() {
diff --git a/kwin/tabbox/qml/tabbox.qml b/kwin/tabbox/qml/tabbox.qml
index 4176231..9fccc0b 100644
--- a/kwin/tabbox/qml/tabbox.qml
+++ b/kwin/tabbox/qml/tabbox.qml
@@ -26,6 +26,11 @@ Loader {
     property int screenHeight : 0
     property bool allDesktops: true
     property string longestCaption: ""
+    property string maskImagePath: item && item.maskImagePath != undefined ? item.maskImagePath : ""
+    property double maskWidth: item && item.maskWidth != undefined ? item.maskWidth : 0
+    property double maskHeight: item && item.maskHeight != undefined ? item.maskHeight : 0
+    property int maskTopMargin: item && item.maskTopMargin != undefined ? item.maskTopMargin : 0
+    property int maskLeftMargin: item && item.maskLeftMargin != undefined ? item.maskLeftMargin : 0
     onLoaded: {
         if (item.screenWidth != undefined) {
             item.screenWidth = screenWidth;