From 6169a6e3d148db0d281a085e514abe6f28a64d9b Mon Sep 17 00:00:00 2001
From: Alex Wilson <yourpalal2@gmail.com>
Date: Tue, 24 Jan 2012 10:17:10 +1300
Subject: [PATCH] Minimize the effect invisible items have on a BALMLayout.

There seems to still be some effect on positioning, but invisible items
no longer constrain the layout.
---
 src/libs/alm/Area.cpp | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/src/libs/alm/Area.cpp b/src/libs/alm/Area.cpp
index abc1dc9280..20acc6c369 100644
--- a/src/libs/alm/Area.cpp
+++ b/src/libs/alm/Area.cpp
@@ -571,6 +571,9 @@ Area::_DoLayout(const BPoint& offset)
 	if (!fLeft)
 		return;
 
+	if (!fLayoutItem->IsVisible())
+		fLayoutItem->AlignInFrame(BRect(0, 0, -1, -1));
+
 	BRect areaFrame(Frame());
 	areaFrame.left += LeftInset();
 	areaFrame.right -= RightInset();
@@ -584,6 +587,12 @@ Area::_DoLayout(const BPoint& offset)
 void
 Area::_UpdateMinSizeConstraint(BSize min)
 {
+	if (!fLayoutItem->IsVisible()) {
+		fMinContentHeight->SetRightSide(-1);
+		fMinContentWidth->SetRightSide(-1);
+		return;
+	}
+
 	float width = 0.;
 	float height = 0.;
 	if (min.width > 0)
@@ -599,6 +608,12 @@ Area::_UpdateMinSizeConstraint(BSize min)
 void
 Area::_UpdateMaxSizeConstraint(BSize max)
 {
+	if (!fLayoutItem->IsVisible()) {
+		fMaxContentHeight->SetRightSide(B_SIZE_UNLIMITED);
+		fMaxContentWidth->SetRightSide(B_SIZE_UNLIMITED);
+		return;
+	}
+
 	max.width += LeftInset() + RightInset();
 	max.height += TopInset() + BottomInset();