No uses B_OP_OVER when drawing the arrows - this fixes the broken look

due to anti-aliasing. Have I mentioned that the arrows are very ugly
anyway right now, and don't match the rest of the look? :-)
Fixed a crashing bug in the "pressed button repeater" - it didn't lock
the looper when scrolling the view.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@13191 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/kits/interface/ScrollBar.cpp

@@ -1,5 +1,5 @@
 //------------------------------------------------------------------------------
-//	Copyright (c) 2001-2002 OpenBeOS
+//	Copyright (c) 2001-2005 Haiku
 //
 //	Permission is hereby granted, free of charge, to any person obtaining a
 //	copy of this software and associated documentation files (the "Software"),
@@ -151,7 +151,9 @@ BScrollBar::Private::ButtonRepeaterThread(void *data)
 	while (!exitval) {
 		oldframe = scrollBar->fPrivateData->fThumbFrame;
 
+		scrollBar->Window()->Lock();
 		returnval = scroll_by_value(scrollvalue, scrollBar);
+		scrollBar->Window()->Unlock();
 
 		snooze(50000);
 
@@ -805,6 +807,8 @@ BScrollBar::Draw(BRect updateRect)
 	SetHighColor(dark);
 	StrokeRect(Bounds());
 
+	SetDrawingMode(B_OP_OVER);
+
 	// Draw arrows
 	BPoint buttonpt(0,0);
 	if (fOrientation == B_HORIZONTAL) {
@@ -845,6 +849,8 @@ BScrollBar::Draw(BRect updateRect)
 			fPrivateData->fButtonDown == ARROW4);
 	}
 
+	SetDrawingMode(B_OP_COPY);
+
 	// Draw scroll thumb
 	
 	if (fPrivateData->fEnabled) {