From: Mikko Rasa <tdb@tdb.fi>
Date: Wed, 12 Jun 2013 09:55:54 +0000 (+0300)
Subject: Smarter way of complementing constraint types
X-Git-Url: http://git.tdb.fi/?p=libs%2Fgltk.git;a=commitdiff_plain;h=a7776a50f9c3bf8d3a61af56f6d11b0721209582

Smarter way of complementing constraint types
---

diff --git a/source/layout.cpp b/source/layout.cpp
index 1ffbcda..66eb66b 100644
--- a/source/layout.cpp
+++ b/source/layout.cpp
@@ -204,16 +204,7 @@ Layout::Slot &Layout::get_slot_for_widget(Widget &wdg)
 
 Layout::ConstraintType Layout::complement(ConstraintType type)
 {
-	if(type==RIGHT_OF)
-		return LEFT_OF;
-	else if(type==LEFT_OF)
-		return RIGHT_OF;
-	else if(type==ABOVE)
-		return BELOW;
-	else if(type==BELOW)
-		return ABOVE;
-	else
-		return type;
+	return static_cast<ConstraintType>((type&~(SELF_MASK|TARGET_MASK)) | ((type&SELF_MASK)<<2) | ((type&TARGET_MASK)>>2));
 }
 
 void Layout::create_constraint(Widget &src, ConstraintType type, Widget &tgt, int sp)
diff --git a/source/layout.h b/source/layout.h
index 0ea47a1..43d1ca8 100644
--- a/source/layout.h
+++ b/source/layout.h
@@ -57,8 +57,10 @@ private:
 		VERTICAL = 1,
 		SELF_POS = 2,
 		SELF_DIM = 4,
+		SELF_MASK = 6,
 		TARGET_POS = 8,
 		TARGET_DIM = 16,
+		TARGET_MASK = 24,
 		SPACING = 32
 	};