From a2b20e69edbfb51603ba762bd76f569300bd925b Mon Sep 17 00:00:00 2001
From: Liny <liny.odell@phoenixviewer.com>
Date: Mon, 22 Oct 2012 10:29:06 -0700
Subject: [PATCH] FIRE-8024 Ability to scroll tab containers with the scroll
 wheel on the mouse

---
 indra/llui/lltabcontainer.cpp | 39 +++++++++++++++++++++++++++++++++++
 indra/llui/lltabcontainer.h   |  1 +
 2 files changed, 40 insertions(+)

diff --git a/indra/llui/lltabcontainer.cpp b/indra/llui/lltabcontainer.cpp
index e6f2577cae..8736eb89b9 100644
--- a/indra/llui/lltabcontainer.cpp
+++ b/indra/llui/lltabcontainer.cpp
@@ -844,6 +844,45 @@ BOOL LLTabContainer::handleKeyHere(KEY key, MASK mask)
 	return handled;
 }
 
+// <FS:LO> FIRE-8024 Ability to scroll tab containers with the scroll wheel on the mouse
+// virtual
+BOOL LLTabContainer::handleScrollWheel(S32 x, S32 y, S32 clicks)
+{
+	LLTabTuple* firsttuple = getTab(0);
+	static LLUICachedControl<S32> tabcntrv_pad ("UITabCntrvPad", 0);
+	BOOL has_scroll_arrows = (getMaxScrollPos() > 0);
+	LLRect clip;
+	if (mIsVertical)
+	{
+		clip = LLRect(firsttuple->mButton->getRect().mLeft,
+						has_scroll_arrows ? mPrevArrowBtn->getRect().mBottom - tabcntrv_pad : mPrevArrowBtn->getRect().mTop,
+						firsttuple->mButton->getRect().mRight,
+						has_scroll_arrows ? mNextArrowBtn->getRect().mTop + tabcntrv_pad : mNextArrowBtn->getRect().mBottom );
+	}
+	else
+	{
+		clip = LLRect(has_scroll_arrows ? mPrevArrowBtn->getRect().mRight : mJumpPrevArrowBtn->getRect().mLeft,
+						firsttuple->mButton->getRect().mTop,
+						has_scroll_arrows ? mNextArrowBtn->getRect().mLeft : mJumpNextArrowBtn->getRect().mRight,
+						firsttuple->mButton->getRect().mBottom );
+	}
+
+	if( clip.pointInRect( x, y ) )
+	{
+		if(clicks < 0)
+		{
+			setScrollPos(getScrollPos() - 1);
+		}
+		else
+		{
+			setScrollPos(getScrollPos() + 1);
+		}
+	}
+
+	return LLUICtrl::handleScrollWheel(x, y, clicks);
+}
+// </FS:LO>
+
 // virtual
 BOOL LLTabContainer::handleDragAndDrop(S32 x, S32 y, MASK mask,	BOOL drop,	EDragAndDropType type, void* cargo_data, EAcceptance *accept, std::string	&tooltip)
 {
diff --git a/indra/llui/lltabcontainer.h b/indra/llui/lltabcontainer.h
index cc96696dbe..e1a11a0f8a 100644
--- a/indra/llui/lltabcontainer.h
+++ b/indra/llui/lltabcontainer.h
@@ -148,6 +148,7 @@ public:
 	/*virtual*/ BOOL handleMouseUp( S32 x, S32 y, MASK mask );
 	/*virtual*/ BOOL handleToolTip(S32 x, S32 y, MASK mask);
 	/*virtual*/ BOOL handleKeyHere(KEY key, MASK mask);
+	/*virtual*/ BOOL handleScrollWheel(S32 x, S32 y, S32 clicks); // <FS:LO> FIRE-8024 Ability to scroll tab containers with the scroll wheel on the mouse
 	/*virtual*/ BOOL handleDragAndDrop(S32 x, S32 y, MASK mask,	BOOL drop,
 									   EDragAndDropType type, void* cargo_data,
 									   EAcceptance* accept, std::string& tooltip);