2 files changed, 44 insertions, 2 deletions

diff --git a/indra/llui/lldockcontrol.cpp b/indra/llui/lldockcontrol.cpp
index d836a5f4cd..f91c07184d 100644
--- a/indra/llui/lldockcontrol.cpp
+++ b/indra/llui/lldockcontrol.cpp
@@ -162,7 +162,9 @@ bool LLDockControl::isDockVisible()
 			{
 			case LEFT: // to keep compiler happy
 				break;
+			case BOTTOM:
 			case TOP:
+			{
 				// check is dock inside parent rect
 				LLRect dockParentRect =
 						mDockWidget->getParent()->calcScreenRect();
@@ -173,6 +175,9 @@ bool LLDockControl::isDockVisible()
 				}
 				break;
 			}
+			default:
+				break;
+			}
 		}
 	}
 
@@ -255,6 +260,42 @@ void LLDockControl::moveDockable()
 		mDockTongueY = dockRect.mTop;
 
 		break;
+	case BOTTOM:
+		x = dockRect.getCenterX() - dockableRect.getWidth() / 2;
+		y = dockRect.mBottom;
+		// unique docking used with dock tongue, so add tongue height o the Y coordinate
+		if (use_tongue)
+		{
+			y -= mDockTongue->getHeight();
+		}
+
+		// check is dockable inside root view rect
+		if (x < rootRect.mLeft)
+		{
+			x = rootRect.mLeft;
+		}
+		if (x + dockableRect.getWidth() > rootRect.mRight)
+		{
+			x = rootRect.mRight - dockableRect.getWidth();
+		}
+
+		// calculate dock tongue position
+		dockParentRect = mDockWidget->getParent()->calcScreenRect();
+		if (dockRect.getCenterX() < dockParentRect.mLeft)
+		{
+			mDockTongueX = dockParentRect.mLeft - mDockTongue->getWidth() / 2;
+		}
+		else if (dockRect.getCenterX() > dockParentRect.mRight)
+		{
+			mDockTongueX = dockParentRect.mRight - mDockTongue->getWidth() / 2;;
+		}
+		else
+		{
+			mDockTongueX = dockRect.getCenterX() - mDockTongue->getWidth() / 2;
+		}
+		mDockTongueY = dockRect.mTop + mDockTongue->getHeight();
+
+		break;
 	}
 
 	// move dockable
diff --git a/indra/llui/lldockcontrol.h b/indra/llui/lldockcontrol.h
index 550955c4c5..a5caf68001 100644
--- a/indra/llui/lldockcontrol.h
+++ b/indra/llui/lldockcontrol.h
@@ -47,8 +47,9 @@ class LLDockControl
 public:
 	enum DocAt
 	{
-		TOP
-		,LEFT
+		TOP,
+		LEFT,
+		BOTTOM
 	};
 
 public: