4 files changed, 30 insertions, 2 deletions

diff --git a/indra/llui/llmultislider.cpp b/indra/llui/llmultislider.cpp
index cd9c77585a..725f1e8f65 100644
--- a/indra/llui/llmultislider.cpp
+++ b/indra/llui/llmultislider.cpp
@@ -41,6 +41,8 @@
 
 static LLDefaultChildRegistry::Register<LLMultiSlider> r("multi_slider_bar");
 
+const F32 FLOAT_THRESHOLD = 0.00001f;
+
 S32 LLMultiSlider::mNameCounter = 0;
 
 LLMultiSlider::SliderParams::SliderParams()
@@ -52,6 +54,7 @@ LLMultiSlider::SliderParams::SliderParams()
 LLMultiSlider::Params::Params()
 :	max_sliders("max_sliders", 1),
 	allow_overlap("allow_overlap", false),
+	loop_overlap("loop_overlap", false),
 	overlap_threshold("overlap_threshold", 0),
 	draw_track("draw_track", true),
 	use_triangle("use_triangle", false),
@@ -73,6 +76,7 @@ LLMultiSlider::LLMultiSlider(const LLMultiSlider::Params& p)
 	mDragStartThumbRect( 0, getRect().getHeight(), p.thumb_width, 0 ),
 	mMaxNumSliders(p.max_sliders),
 	mAllowOverlap(p.allow_overlap),
+	mLoopOverlap(p.loop_overlap),
 	mDrawTrack(p.draw_track),
 	mUseTriangle(p.use_triangle),
 	mTrackColor(p.track_color()),
@@ -151,7 +155,14 @@ void LLMultiSlider::setSliderValue(const std::string& name, F32 value, BOOL from
 		// look at the current spot
 		// and see if anything is there
 		LLSD::map_iterator mIt = mValue.beginMap();
-		F32 threshold = mOverlapThreshold + (mIncrement / 4); // increment is our distance between points, use to eliminate round error
+
+		// increment is our distance between points, use to eliminate round error
+		F32 threshold = mOverlapThreshold + (mIncrement / 4);
+		// If loop overlap is enabled, check if we overlap with points 'after' max value (project to lower)
+		F32 loop_up_check = (mLoopOverlap && (value + threshold) > mMaxValue) ? (value + threshold - mMaxValue + mMinValue) : 0.0f;
+		// If loop overlap is enabled, check if we overlap with points 'before' min value (project to upper)
+		F32 loop_down_check = (mLoopOverlap && (value - threshold) < mMinValue) ? (value - threshold - mMinValue + mMaxValue) : 0.0f;
+
 		for(;mIt != mValue.endMap(); mIt++) {
 			
 			F32 testVal = (F32)mIt->second.asReal() - newValue;
@@ -162,6 +173,18 @@ void LLMultiSlider::setSliderValue(const std::string& name, F32 value, BOOL from
 				hit = true;
 				break;
 			}
+			if (loop_up_check != 0
+				&& testVal < loop_up_check)
+			{
+				hit = true;
+				break;
+			}
+			if (loop_down_check != 0
+				&& testVal > loop_down_check)
+			{
+				hit = true;
+				break;
+			}
 		}
 
 		// if none found, stop
@@ -311,7 +334,7 @@ bool LLMultiSlider::findUnusedValue(F32& initVal)
 
 		// look at the current spot
 		// and see if anything is there
-		F32 threshold = mOverlapThreshold + (mIncrement / 4);
+		F32 threshold = mAllowOverlap ? FLOAT_THRESHOLD : mOverlapThreshold + (mIncrement / 4);
 		LLSD::map_iterator mIt = mValue.beginMap();
 		for(;mIt != mValue.endMap(); mIt++) {
 			
diff --git a/indra/llui/llmultislider.h b/indra/llui/llmultislider.h
index 9281b68406..eff0c7d2d7 100644
--- a/indra/llui/llmultislider.h
+++ b/indra/llui/llmultislider.h
@@ -47,6 +47,7 @@ public:
 		Optional<S32>	max_sliders;
 
 		Optional<bool>	allow_overlap,
+						loop_overlap,
 						draw_track,
 						use_triangle;
 
@@ -109,6 +110,7 @@ protected:
 
 	S32				mMaxNumSliders;
 	BOOL			mAllowOverlap;
+	BOOL			mLoopOverlap;
 	F32				mOverlapThreshold;
 	BOOL			mDrawTrack;
 	BOOL			mUseTriangle;			/// hacked in toggle to use a triangle
diff --git a/indra/llui/llmultisliderctrl.cpp b/indra/llui/llmultisliderctrl.cpp
index d2afca19b7..4c2936eb69 100644
--- a/indra/llui/llmultisliderctrl.cpp
+++ b/indra/llui/llmultisliderctrl.cpp
@@ -53,6 +53,7 @@ LLMultiSliderCtrl::Params::Params()
 	can_edit_text("can_edit_text", false),
 	max_sliders("max_sliders", 1),
 	allow_overlap("allow_overlap", false),
+	loop_overlap("loop_overlap", false),
 	overlap_threshold("overlap_threshold", 0),
 	draw_track("draw_track", true),
 	use_triangle("use_triangle", false),
@@ -168,6 +169,7 @@ LLMultiSliderCtrl::LLMultiSliderCtrl(const LLMultiSliderCtrl::Params& p)
 	params.increment(p.increment);
 	params.max_sliders(p.max_sliders);
 	params.allow_overlap(p.allow_overlap);
+	params.loop_overlap(p.loop_overlap);
 	if (p.overlap_threshold.isProvided())
 	{
 		params.overlap_threshold = p.overlap_threshold;
diff --git a/indra/llui/llmultisliderctrl.h b/indra/llui/llmultisliderctrl.h
index 507115f5e1..0ce21c0612 100644
--- a/indra/llui/llmultisliderctrl.h
+++ b/indra/llui/llmultisliderctrl.h
@@ -54,6 +54,7 @@ public:
 		Optional<S32>			decimal_digits;
 		Optional<S32>			max_sliders;	
 		Optional<bool>			allow_overlap,
+								loop_overlap,
 								draw_track,
 								use_triangle;