Some style fixes

src/servers/app/decorator/DecorManager.h

@@ -52,7 +52,7 @@ public:
 	virtual const DesktopListenerList& GetDesktopListeners();
 
 protected:
-	virtual Decorator*			_AllocateDecorator(DesktopSettings& settings,
+	virtual	Decorator*			_AllocateDecorator(DesktopSettings& settings,
 									BRect rect);
 
 			DesktopListenerList	fDesktopListeners;

src/servers/app/decorator/Decorator.cpp

@@ -294,7 +294,8 @@ Decorator::TabRect(Decorator::Tab* tab) const
 	Note that this does not update the button's look - it just updates the
 	internal button value
 
-	\param is_down Whether the button is down or not
+	\param tab The tab index
+	\param pressed Whether the button is down or not
 */
 void
 Decorator::SetClose(int32 tab, bool pressed)
@@ -309,6 +310,7 @@ Decorator::SetClose(int32 tab, bool pressed)
 	}
 }
 
+
 /*!	\brief Sets the minimize button's value.
 
 	Note that this does not update the button's look - it just updates the
@@ -619,17 +621,17 @@ Decorator::GetSettings(BMessage* settings) const
 }
 
 
-/*!	\brief Updates the decorator's look in the area \a rect
+/*!	\brief Updates the decorator in the rectangular area \a updateRect.
 
 	The default version updates all areas which intersect the frame and tab.
 
-	\param rect The area to update.
+	\param updateRect The rectangular area to update.
 */
 void
-Decorator::Draw(BRect rect)
+Decorator::Draw(BRect updateRect)
 {
-	_DrawFrame(rect & fFrame);
-	_DrawTabs(rect & fTitleBarRect);
+	_DrawFrame(updateRect & fFrame);
+	_DrawTabs(updateRect & fTitleBarRect);
 }
 
 
@@ -748,7 +750,6 @@ Decorator::_DrawFrame(BRect rect)
 }
 
 
-
 void
 Decorator::_DrawTabs(BRect rect)
 {

src/servers/app/decorator/Decorator.h

@@ -155,7 +155,7 @@ public:
 								BRegion* updateRegion = NULL);
 	virtual	bool			GetSettings(BMessage* settings) const;
 
-	virtual	void			Draw(BRect rect);
+	virtual	void			Draw(BRect updateRect);
 	virtual	void			Draw();
 	virtual	void			DrawClose(int32 tab);
 	virtual	void			DrawMinimize(int32 tab);

src/servers/app/decorator/DefaultDecorator.cpp

@@ -721,8 +721,7 @@ DefaultDecorator::_DrawFrame(BRect invalid)
 					fDrawingEngine->StrokeLine(BPoint(r.left + i, r.top + i),
 						BPoint(r.right - i, r.top + i), colors[i * 2]);
 				}
-				if (fTitleBarRect.IsValid()
-					&& fTopTab->look != kLeftTitledWindowLook) {
+				if (fTitleBarRect.IsValid() && fTopTab->look != kLeftTitledWindowLook) {
 					// grey along the bottom of the tab
 					// (overwrites "white" from frame)
 					fDrawingEngine->StrokeLine(
@@ -1436,7 +1435,7 @@ DefaultDecorator::_GetFootprint(BRegion *region)
 	// This function calculates the decorator's footprint in coordinates
 	// relative to the view. This is most often used to set a Window
 	// object's visible region.
-	if (!region)
+	if (region == NULL)
 		return;
 
 	region->MakeEmpty();

src/servers/app/decorator/DefaultDecorator.h

@@ -141,7 +141,7 @@ protected:
 	virtual	bool				_SetSettings(const BMessage& settings,
 									BRegion* updateRegion = NULL);
 
-	virtual bool				_AddTab(DesktopSettings& settings,
+	virtual	bool				_AddTab(DesktopSettings& settings,
 									int32 index = -1,
 									BRegion* updateRegion = NULL);
 	virtual	bool				_RemoveTab(int32 index,