getComputedStyle for background-origin

khtml/css/css_renderstyledeclarationimpl.cpp

@@ -39,6 +39,7 @@ static const int computedProperties[] = {
     CSS_PROP_BACKGROUND_IMAGE,
     CSS_PROP_BACKGROUND_REPEAT,
     CSS_PROP_BACKGROUND_ATTACHMENT,
+    CSS_PROP_BACKGROUND_ORIGIN,
     CSS_PROP_BACKGROUND_POSITION,
     CSS_PROP_BACKGROUND_POSITION_X,
     CSS_PROP_BACKGROUND_POSITION_Y,
@@ -459,6 +460,17 @@ CSSValueImpl *RenderStyleDeclarationImpl::getPropertyCSSValue( int propertyID )
             Q_ASSERT( 0 );
         }
         break;
+    case CSS_PROP_BACKGROUND_ORIGIN:
+        switch (style->backgroundLayers()->backgroundOrigin()) {
+            case BGBORDER:
+                return new CSSPrimitiveValueImpl(CSS_VAL_BORDER_BOX);
+            case BGPADDING:
+                return new CSSPrimitiveValueImpl(CSS_VAL_PADDING_BOX);
+            case BGCONTENT:
+                return new CSSPrimitiveValueImpl(CSS_VAL_CONTENT_BOX);
+        }
+        Q_ASSERT(0);
+        break;
     case CSS_PROP_BACKGROUND_POSITION:
     {
         RETURN_NULL_ON_NULL(renderer);