I couldn't resist playing some more with ezprof. I don't know if I can trust it's results though, revealing as they are. Somebody should explain to me why forgetting a return *this; in an operator= method works in the first place, and why it results in the constructor being called.

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@15255 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/tests/servers/app/newerClipping/Desktop.cpp

@@ -14,7 +14,7 @@
 
 // constructor
 Desktop::Desktop(DrawView* drawView)
-	: BLooper("desktop"),
+	: BLooper("desktop", B_URGENT_DISPLAY_PRIORITY),
 	  fTracking(false),
 	  fLastMousePos(-1.0, -1.0),
 	  fClickedWindow(NULL),
@@ -144,13 +144,13 @@ Desktop::MouseMoved(BPoint where, uint32 code, const BMessage* dragMessage)
 
 		if (dx != 0 || dy != 0) {
 			if (fClickedWindow) {
-bigtime_t now = system_time();
+//bigtime_t now = system_time();
 				if (fResizing) {
 					ResizeWindowBy(fClickedWindow, dx, dy);
-printf("resizing: %lld\n", system_time() - now);
+//printf("resizing: %lld\n", system_time() - now);
 				} else {
 					MoveWindowBy(fClickedWindow, dx, dy);
-printf("moving: %lld\n", system_time() - now);
+//printf("moving: %lld\n", system_time() - now);
 				}
 			}
 		}

src/tests/servers/app/newerClipping/WindowLayer.cpp

@@ -155,7 +155,19 @@ void
 WindowLayer::GetBorderRegion(BRegion* region)
 {
 	if (!fBorderRegionValid) {
-		// TODO: speed up by avoiding "Exclude()"
+		fBorderRegion.Set(BRect(fFrame.left - 4, fFrame.top - 20,
+							  	(fFrame.left + fFrame.right) / 2, fFrame.top - 5));
+		fBorderRegion.Include(BRect(fFrame.left - 4, fFrame.top - 4,
+									fFrame.right + 4, fFrame.top - 1));
+		fBorderRegion.Include(BRect(fFrame.left - 4, fFrame.top,
+									fFrame.left - 1, fFrame.bottom));
+		fBorderRegion.Include(BRect(fFrame.right + 1, fFrame.top,
+									fFrame.right + 4, fFrame.bottom - 11));
+		fBorderRegion.Include(BRect(fFrame.left - 4, fFrame.bottom + 1,
+									fFrame.right - 11, fFrame.bottom + 4));
+		fBorderRegion.Include(BRect(fFrame.right - 10, fFrame.bottom - 10,
+									fFrame.right + 4, fFrame.bottom + 4));
+/*		// TODO: speed up by avoiding "Exclude()"
 		// start from the frame, extend to include decorator border
 		fBorderRegion.Set(BRect(fFrame.left - 4, fFrame.top - 4,
 						  fFrame.right + 4, fFrame.bottom + 4));
@@ -169,7 +181,7 @@ WindowLayer::GetBorderRegion(BRegion* region)
 		// resize handle
 		// if (B_DOCUMENT_WINDOW_LOOK)
 			fBorderRegion.Include(BRect(fFrame.right - 10, fFrame.bottom - 10,
-								  fFrame.right, fFrame.bottom));
+								  fFrame.right, fFrame.bottom));*/
 		fBorderRegionValid = true;
 	}
 
@@ -779,6 +791,7 @@ UpdateSession::operator=(const UpdateSession& other)
 {
 	fDirtyRegion = other.fDirtyRegion;
 	fInUse = other.fInUse;
+	return *this;
 }
 
 

src/tests/servers/app/newerClipping/main.cpp

@@ -181,14 +181,14 @@ Window::Test()
 		AddWindow(frame, name.String());
 	}
 
-	frame.Set(10, 80, 320, 290);
+/*	frame.Set(10, 80, 320, 290);
 	for (int32 i = 20; i < 40; i++) {
 		BString name("Window ");
 		frame.OffsetBy(20, 15);
 		name << i + 1;
 		AddWindow(frame, name.String());
 	}
-/*
+
 	frame.Set(20, 140, 330, 230);
 	for (int32 i = 40; i < 60; i++) {
 		BString name("Window ");