pull and merge from viewer-development

23 files changed, 405 insertions, 200 deletions

diff --git a/indra/llui/llaccordionctrltab.cpp b/indra/llui/llaccordionctrltab.cpp
index 7a5f9f9fd6..c025cd7939 100644
--- a/indra/llui/llaccordionctrltab.cpp
+++ b/indra/llui/llaccordionctrltab.cpp
@@ -976,7 +976,7 @@ void LLAccordionCtrlTab::drawChild(const LLRect& root_rect,LLView* child)
 			gGL.matrixMode(LLRender::MM_MODELVIEW);
 			LLUI::pushMatrix();
 			{
-				LLUI::translate((F32)child->getRect().mLeft, (F32)child->getRect().mBottom, 0.f);
+				LLUI::translate((F32)child->getRect().mLeft, (F32)child->getRect().mBottom);
 				child->draw();
 
 			}
diff --git a/indra/llui/llbutton.cpp b/indra/llui/llbutton.cpp
index f0d92d597a..705fe16559 100644
--- a/indra/llui/llbutton.cpp
+++ b/indra/llui/llbutton.cpp
@@ -908,9 +908,9 @@ void LLButton::draw()
 		// Not sure if it is really needed. Probably S32_MAX should be always passed as max_chars.
 		mLastDrawCharsCount = mGLFont->render(label, 0,
 			(F32)x,
-			(F32)(mBottomVPad + y_offset),
+			(F32)(getRect().getHeight() / 2 + mBottomVPad),
 			label_color % alpha,
-			mHAlign, LLFontGL::BOTTOM,
+			mHAlign, LLFontGL::VCENTER,
 			LLFontGL::NORMAL,
 			mDropShadowedText ? LLFontGL::DROP_SHADOW_SOFT : LLFontGL::NO_SHADOW,
 			S32_MAX, text_width,
diff --git a/indra/llui/llcombobox.cpp b/indra/llui/llcombobox.cpp
index 89d8842393..806d2ef3f6 100644
--- a/indra/llui/llcombobox.cpp
+++ b/indra/llui/llcombobox.cpp
@@ -613,7 +613,7 @@ void LLComboBox::showList()
 	}
 	mList->setOrigin(rect.mLeft, rect.mBottom);
 	mList->reshape(rect.getWidth(), rect.getHeight());
-	mList->translateIntoRect(root_view_local, FALSE);
+	mList->translateIntoRect(root_view_local);
 
 	// Make sure we didn't go off bottom of screen
 	S32 x, y;
diff --git a/indra/llui/lldraghandle.cpp b/indra/llui/lldraghandle.cpp
index 42e6c3c786..5f69c6af31 100644
--- a/indra/llui/lldraghandle.cpp
+++ b/indra/llui/lldraghandle.cpp
@@ -244,7 +244,7 @@ void LLDragHandleTop::reshapeTitleBox()
 	const LLFontGL* font = LLFontGL::getFontSansSerif();
 	S32 title_width = getRect().getWidth();
 	title_width -= LEFT_PAD + 2 * BORDER_PAD + getButtonsRect().getWidth();
-	S32 title_height = llround(font->getLineHeight());
+	S32 title_height = font->getLineHeight();
 	LLRect title_rect;
 	title_rect.setLeftTopAndSize( 
 		LEFT_PAD, 
diff --git a/indra/llui/llfloater.cpp b/indra/llui/llfloater.cpp
index 33548151fd..22b20969fc 100644
--- a/indra/llui/llfloater.cpp
+++ b/indra/llui/llfloater.cpp
@@ -270,6 +270,7 @@ LLFloater::LLFloater(const LLSD& key, const LLFloater::Params& p)
 	mMinimizeSignal(NULL)
 //	mNotificationContext(NULL)
 {
+	mPosition.setFloater(*this);
 //	mNotificationContext = new LLFloaterNotificationContext(getHandle());
 
 	// Clicks stop here.
@@ -925,7 +926,7 @@ void LLFloater::applyPositioning(LLFloater* other)
 			setOrigin(mSpecifiedLeft, mSpecifiedBottom);
 			const LLRect& snap_rect = gFloaterView->getSnapRect();
 			translate(snap_rect.mLeft, snap_rect.mBottom);
-			translateIntoRect(snap_rect, FALSE);
+			translateIntoRect(snap_rect);
 		}
 		break;
 
@@ -949,7 +950,7 @@ void LLFloater::applyPositioning(LLFloater* other)
 			setOrigin(horizontal_offset, vertical_offset - rect_height);
 
 			translate(snap_rect.mLeft, snap_rect.mBottom);
-			translateIntoRect(snap_rect, FALSE);
+			translateIntoRect(snap_rect);
 		}
 		break;
 
@@ -1681,6 +1682,8 @@ LLFloater* LLFloater::getClosableFloaterFromFocus()
 	{
 		if (it->hasFocus())
 		{
+			LLFloater& floater = *it;
+			focused_floater = &floater;
 			break;
 		}
 	}
@@ -1800,7 +1803,7 @@ void LLFloater::draw()
 				
 				const LLFontGL* font = LLFontGL::getFontSansSerif();
 				LLRect r = getRect();
-				gl_rect_2d_offset_local(0, r.getHeight(), r.getWidth(), r.getHeight() - (S32)font->getLineHeight() - 1, 
+				gl_rect_2d_offset_local(0, r.getHeight(), r.getWidth(), r.getHeight() - font->getLineHeight() - 1, 
 					titlebar_focus_color % alpha, 0, TRUE);
 			}
 		}
@@ -2641,6 +2644,8 @@ void LLFloaterView::refresh()
 	}
 }
 
+const S32 FLOATER_MIN_VISIBLE_PIXELS = 16;
+
 void LLFloaterView::adjustToFitScreen(LLFloater* floater, BOOL allow_partial_outside)
 {
 	if (floater->getParent() != this)
@@ -2694,7 +2699,7 @@ void LLFloaterView::adjustToFitScreen(LLFloater* floater, BOOL allow_partial_out
 	}
 
 	// move window fully onscreen
-	if (floater->translateIntoRect( getSnapRect(), allow_partial_outside ))
+	if (floater->translateIntoRect( getSnapRect(), allow_partial_outside ? FLOATER_MIN_VISIBLE_PIXELS : S32_MAX ))
 	{
 		floater->clearSnapTarget();
 	}
@@ -3269,3 +3274,112 @@ void LLFloater::stackWith(LLFloater& other)
 	setShape(next_rect);
 }
 
+LLCoordFloater::LLCoordFloater(F32 x, F32 y, LLFloater& floater)
+:	coord_t((S32)x, (S32)y)
+{
+	mFloater = floater.getHandle();
+}
+
+
+LLCoordFloater::LLCoordFloater(const LLCoordCommon& other, LLFloater& floater)
+{
+	mFloater = floater.getHandle();
+	convertFromCommon(other);
+}
+
+LLCoordFloater& LLCoordFloater::operator=(const LLCoordFloater& other)
+{
+	mFloater = other.mFloater;
+	coord_t::operator =(other);
+	return *this;
+}
+
+void LLCoordFloater::setFloater(LLFloater& floater)
+{
+	mFloater = floater.getHandle();
+}
+
+bool LLCoordFloater::operator==(const LLCoordFloater& other) const 
+{ 
+	return mX == other.mX && mY == other.mY && mFloater == other.mFloater; 
+}
+
+LLCoordCommon LL_COORD_FLOATER::convertToCommon() const
+{
+	const LLCoordFloater& self = static_cast<const LLCoordFloater&>(*this);
+
+	LLRect snap_rect = gFloaterView->getSnapRect();
+	LLFloater* floaterp = mFloater.get();
+	S32 floater_width = floaterp ? floaterp->getRect().getWidth() : 0;
+	S32 floater_height = floaterp ? floaterp->getRect().getHeight() : 0;
+	LLCoordCommon out;
+	if (self.mX < -0.5f)
+	{
+		out.mX = llround(rescale(self.mX, -1.f, -0.5f, snap_rect.mLeft - (floater_width - FLOATER_MIN_VISIBLE_PIXELS), snap_rect.mLeft));
+	}
+	else if (self.mX > 0.5f)
+	{
+		out.mX = llround(rescale(self.mX, 0.5f, 1.f, snap_rect.mRight - floater_width, snap_rect.mRight - FLOATER_MIN_VISIBLE_PIXELS));
+	}
+	else
+	{
+		out.mX = llround(rescale(self.mX, -0.5f, 0.5f, snap_rect.mLeft, snap_rect.mRight - floater_width));
+	}
+
+	if (self.mY < -0.5f)
+	{
+		out.mY = llround(rescale(self.mY, -1.f, -0.5f, snap_rect.mBottom - (floater_height - FLOATER_MIN_VISIBLE_PIXELS), snap_rect.mBottom));
+	}
+	else if (self.mY > 0.5f)
+	{
+		out.mY = llround(rescale(self.mY, 0.5f, 1.f, snap_rect.mTop - floater_height, snap_rect.mTop - FLOATER_MIN_VISIBLE_PIXELS));
+	}
+	else
+	{
+		out.mY = llround(rescale(self.mY, -0.5f, 0.5f, snap_rect.mBottom, snap_rect.mTop - floater_height));
+	}
+
+	// return center point instead of lower left
+	out.mX += floater_width / 2;
+	out.mY += floater_height / 2;
+
+	return out;
+}
+
+void LL_COORD_FLOATER::convertFromCommon(const LLCoordCommon& from)
+{
+	LLCoordFloater& self = static_cast<LLCoordFloater&>(*this);
+	LLRect snap_rect = gFloaterView->getSnapRect();
+	LLFloater* floaterp = mFloater.get();
+	S32 floater_width = floaterp ? floaterp->getRect().getWidth() : 0;
+	S32 floater_height = floaterp ? floaterp->getRect().getHeight() : 0;
+
+	S32 from_x = from.mX - floater_width / 2;
+	S32 from_y = from.mY - floater_height / 2;
+
+	if (from_x < snap_rect.mLeft)
+	{
+		self.mX = rescale(from_x, snap_rect.mLeft - (floater_width - FLOATER_MIN_VISIBLE_PIXELS), snap_rect.mLeft, -1.f, -0.5f);
+	}
+	else if (from_x + floater_width > snap_rect.mRight)
+	{
+		self.mX = rescale(from_x, snap_rect.mRight - floater_width, snap_rect.mRight - FLOATER_MIN_VISIBLE_PIXELS, 0.5f, 1.f);
+	}
+	else
+	{
+		self.mX = rescale(from_x, snap_rect.mLeft, snap_rect.mRight - floater_width, -0.5f, 0.5f);
+	}
+
+	if (from_y < snap_rect.mBottom)
+	{
+		self.mY = rescale(from_y, snap_rect.mBottom - (floater_height - FLOATER_MIN_VISIBLE_PIXELS), snap_rect.mBottom, -1.f, -0.5f);
+	}
+	else if (from_y + floater_height > snap_rect.mTop)
+	{
+		self.mY = rescale(from_y, snap_rect.mTop - floater_height, snap_rect.mTop - FLOATER_MIN_VISIBLE_PIXELS, 0.5f, 1.f);
+	}
+	else
+	{
+		self.mY = rescale(from_y, snap_rect.mBottom, snap_rect.mTop - floater_height, -0.5f, 0.5f);
+	}
+}
diff --git a/indra/llui/llfloater.h b/indra/llui/llfloater.h
index 59b35d206f..a7cc9ae961 100644
--- a/indra/llui/llfloater.h
+++ b/indra/llui/llfloater.h
@@ -82,6 +82,37 @@ namespace LLInitParam
 	};
 }
 
+struct LL_COORD_FLOATER
+{
+	typedef F32 value_t;
+
+	LLCoordCommon convertToCommon() const;
+	void convertFromCommon(const LLCoordCommon& from);
+protected:
+	LLHandle<LLFloater> mFloater;
+};
+
+struct LLCoordFloater : LLCoord<LL_COORD_FLOATER>
+{
+	typedef LLCoord<LL_COORD_FLOATER> coord_t;
+
+	LLCoordFloater() {}
+	LLCoordFloater(F32 x, F32 y, LLFloater& floater);
+	LLCoordFloater(const LLCoordCommon& other, LLFloater& floater);
+
+	LLCoordFloater& operator=(const LLCoordCommon& other)
+	{
+		convertFromCommon(other);
+		return *this;
+	}
+
+	LLCoordFloater& operator=(const LLCoordFloater& other);
+
+	bool operator==(const LLCoordFloater& other) const;
+	bool operator!=(const LLCoordFloater& other) const { return !(*this == other); }
+
+	void setFloater(LLFloater& floater);
+};
 
 class LLFloater : public LLPanel, public LLInstanceTracker<LLFloater>
 {
@@ -184,7 +215,7 @@ public:
 	bool initFloaterXML(LLXMLNodePtr node, LLView *parent, const std::string& filename, LLXMLNodePtr output_node = NULL);
 
 	/*virtual*/ void handleReshape(const LLRect& new_rect, bool by_user = false);
-	/*virtual*/ BOOL canSnapTo(const LLView* other_view);
+	/*virtual*/ BOOL canSnapTo(const LLView* other_view); 
 	/*virtual*/ void setSnappedTo(const LLView* snap_view);
 	/*virtual*/ void setFocus( BOOL b );
 	/*virtual*/ void setIsChrome(BOOL is_chrome);
@@ -425,6 +456,7 @@ private:
 	LLFloaterEnums::EOpenPositioning	mOpenPositioning;
 	S32									mSpecifiedLeft;
 	S32									mSpecifiedBottom;
+	LLCoordFloater	mPosition;
 	
 	S32				mMinWidth;
 	S32				mMinHeight;
diff --git a/indra/llui/lllayoutstack.cpp b/indra/llui/lllayoutstack.cpp
index 2f1c2a47c9..ae262f794e 100644
--- a/indra/llui/lllayoutstack.cpp
+++ b/indra/llui/lllayoutstack.cpp
@@ -36,7 +36,7 @@
 #include "llcriticaldamp.h"
 #include "boost/foreach.hpp"
 
-static const F32 MIN_FRACTIONAL_SIZE = 0.0001f;
+static const F32 MIN_FRACTIONAL_SIZE = 0.0f;
 static const F32 MAX_FRACTIONAL_SIZE = 1.f;
 
 static LLDefaultChildRegistry::Register<LLLayoutStack> register_layout_stack("layout_stack");
@@ -129,6 +129,12 @@ void LLLayoutPanel::setOrientation( LLLayoutStack::ELayoutOrientation orientatio
 		? getRect().getWidth()
 		: getRect().getHeight()));
 
+	if (mAutoResize == FALSE 
+		&& mUserResize == TRUE 
+		&& mMinDim == -1 )
+	{
+		setMinDim(layout_dim);
+	}
 	mTargetDim = llmax(layout_dim, getMinDim());
 }
  
@@ -306,7 +312,6 @@ void LLLayoutStack::updateLayout()
 
 	bool animation_in_progress = animatePanels();
 	F32 total_visible_fraction = 0.f;
-	F32 total_open_fraction = 0.f;
 	S32 space_to_distribute = (mOrientation == HORIZONTAL)
 							? getRect().getWidth()
 							: getRect().getHeight();
@@ -318,20 +323,17 @@ void LLLayoutStack::updateLayout()
 		if (panelp->mAutoResize)
 		{
 			panelp->mTargetDim = panelp->getRelevantMinDim();
-			if (!panelp->mCollapsed && panelp->getVisible())
-			{
-				total_open_fraction += panelp->mFractionalSize;
-			}
 		}
 		space_to_distribute -= panelp->getVisibleDim() + llround((F32)mPanelSpacing * panelp->getVisibleAmount());
-		total_visible_fraction += panelp->mFractionalSize;
+		total_visible_fraction += panelp->mFractionalSize * panelp->getAutoResizeFactor();
 	}
 
-	llassert(total_visible_fraction < 1.01f);
+	llassert(total_visible_fraction < 1.05f);
 
 	// don't need spacing after last panel
 	space_to_distribute += panelp ? llround((F32)mPanelSpacing * panelp->getVisibleAmount()) : 0;
 
+	S32 remaining_space = space_to_distribute;
 	F32 fraction_distributed = 0.f;
 	if (space_to_distribute > 0 && total_visible_fraction > 0.f)
 	{	// give space proportionally to visible auto resize panels
@@ -343,26 +345,23 @@ void LLLayoutStack::updateLayout()
 				S32 delta = llround((F32)space_to_distribute * fraction_to_distribute);
 				fraction_distributed += fraction_to_distribute;
 				panelp->mTargetDim += delta;
+				remaining_space -= delta;
 			}
 		}
 	}
 
-	if (fraction_distributed < total_visible_fraction)
-	{	// distribute any left over pixels to non-collapsed, visible panels
-		F32 fraction_left = total_visible_fraction - fraction_distributed;
-		S32 space_left = llround((F32)space_to_distribute * (fraction_left / total_visible_fraction));
+	// distribute any left over pixels to non-collapsed, visible panels
+	BOOST_FOREACH(LLLayoutPanel* panelp, mPanels)
+	{
+		if (remaining_space == 0) break;
 
-		BOOST_FOREACH(LLLayoutPanel* panelp, mPanels)
+		if (panelp->mAutoResize 
+			&& !panelp->mCollapsed 
+			&& panelp->getVisible())
 		{
-			if (panelp->mAutoResize 
-				&& !panelp->mCollapsed 
-				&& panelp->getVisible())
-			{
-				S32 space_for_panel = llmax(0, llround((F32)space_left * (panelp->mFractionalSize / total_open_fraction)));
-				panelp->mTargetDim += space_for_panel;
-				space_left -= space_for_panel;
-				total_open_fraction -= panelp->mFractionalSize;
-			}
+			S32 space_for_panel = remaining_space > 0 ? 1 : -1;
+			panelp->mTargetDim += space_for_panel;
+			remaining_space -= space_for_panel;
 		}
 	}
 
@@ -494,33 +493,46 @@ void LLLayoutStack::updateClass()
 
 void LLLayoutStack::updateFractionalSizes()
 {
-	F32 total_resizable_dim = 0;
-	S32 num_auto_resize_panels = 0;
+	F32 total_resizable_dim = 0.f;
 
 	BOOST_FOREACH(LLLayoutPanel* panelp, mPanels)
 	{
 		if (panelp->mAutoResize)
 		{
 			total_resizable_dim += llmax(0, panelp->getLayoutDim() - panelp->getRelevantMinDim());
-			num_auto_resize_panels++;
 		}
 	}
 
-	F32 total_fractional_size = 0.f;
-	
 	BOOST_FOREACH(LLLayoutPanel* panelp, mPanels)
 	{
 		if (panelp->mAutoResize)
 		{
 			F32 panel_resizable_dim = llmax(MIN_FRACTIONAL_SIZE, (F32)(panelp->getLayoutDim() - panelp->getRelevantMinDim()));
 			panelp->mFractionalSize = panel_resizable_dim > 0.f 
-										? llclamp(panel_resizable_dim / total_resizable_dim, MIN_FRACTIONAL_SIZE, MAX_FRACTIONAL_SIZE)
-										: MIN_FRACTIONAL_SIZE;
-			total_fractional_size += panelp->mFractionalSize;
+				? llclamp(panel_resizable_dim / total_resizable_dim, MIN_FRACTIONAL_SIZE, MAX_FRACTIONAL_SIZE)
+				: MIN_FRACTIONAL_SIZE;
 			llassert(!llisnan(panelp->mFractionalSize));
 		}
 	}
 
+	normalizeFractionalSizes();
+}
+
+
+void LLLayoutStack::normalizeFractionalSizes()
+{
+	S32 num_auto_resize_panels = 0;
+	F32 total_fractional_size = 0.f;
+	
+	BOOST_FOREACH(LLLayoutPanel* panelp, mPanels)
+	{
+		if (panelp->mAutoResize)
+		{
+			total_fractional_size += panelp->mFractionalSize;
+			num_auto_resize_panels++;
+		}
+	}
+
 	if (total_fractional_size == 0.f)
 	{ // equal distribution
 		BOOST_FOREACH(LLLayoutPanel* panelp, mPanels)
@@ -632,7 +644,7 @@ void LLLayoutStack::updatePanelRect( LLLayoutPanel* resized_panel, const LLRect&
 
 	F32 total_visible_fraction = 0.f;
 	F32 delta_auto_resize_headroom = 0.f;
-	F32 total_auto_resize_headroom = 0.f;
+	F32 original_auto_resize_headroom = 0.f;
 
 	LLLayoutPanel* other_resize_panel = NULL;
 	LLLayoutPanel* following_panel = NULL;
@@ -641,8 +653,11 @@ void LLLayoutStack::updatePanelRect( LLLayoutPanel* resized_panel, const LLRect&
 	{
 		if (panelp->mAutoResize)
 		{
-			total_auto_resize_headroom += (F32)(panelp->mTargetDim - panelp->getRelevantMinDim());
-			total_visible_fraction += panelp->mFractionalSize * panelp->getAutoResizeFactor();
+			original_auto_resize_headroom += (F32)(panelp->mTargetDim - panelp->getRelevantMinDim());
+			if (panelp->getVisible() && !panelp->mCollapsed)
+			{
+				total_visible_fraction += panelp->mFractionalSize;
+			}
 		}
 
 		if (panelp == resized_panel)
@@ -656,18 +671,25 @@ void LLLayoutStack::updatePanelRect( LLLayoutPanel* resized_panel, const LLRect&
 		}
 	}
 
-	if (resized_panel->mAutoResize == FALSE)
+
+	if (resized_panel->mAutoResize)
 	{
-		delta_auto_resize_headroom += -delta_dim;
+		if (!other_resize_panel || !other_resize_panel->mAutoResize)
+		{
+			delta_auto_resize_headroom += delta_dim;	
+		}
 	}
-	if (other_resize_panel && other_resize_panel->mAutoResize == FALSE)
+	else 
 	{
-		delta_auto_resize_headroom += delta_dim;
+		if (!other_resize_panel || other_resize_panel->mAutoResize)
+		{
+			delta_auto_resize_headroom -= delta_dim;
+		}
 	}
 
 	F32 fraction_given_up = 0.f;
 	F32 fraction_remaining = 1.f;
-	F32 updated_auto_resize_headroom = total_auto_resize_headroom + delta_auto_resize_headroom;
+	F32 updated_auto_resize_headroom = original_auto_resize_headroom + delta_auto_resize_headroom;
 
 	enum
 	{
@@ -691,14 +713,15 @@ void LLLayoutStack::updatePanelRect( LLLayoutPanel* resized_panel, const LLRect&
 		case BEFORE_RESIZED_PANEL:
 			if (panelp->mAutoResize)
 			{	// freeze current size as fraction of overall auto_resize space
-				F32 fractional_adjustment_factor = total_auto_resize_headroom / updated_auto_resize_headroom;
+				F32 fractional_adjustment_factor = updated_auto_resize_headroom == 0.f
+													? 1.f
+													: original_auto_resize_headroom / updated_auto_resize_headroom;
 				F32 new_fractional_size = llclamp(panelp->mFractionalSize * fractional_adjustment_factor,
 													MIN_FRACTIONAL_SIZE,
 													MAX_FRACTIONAL_SIZE);
-				F32 fraction_delta = (new_fractional_size - panelp->mFractionalSize);
-				fraction_given_up -= fraction_delta;
+				fraction_given_up -= new_fractional_size - panelp->mFractionalSize;
 				fraction_remaining -= panelp->mFractionalSize;
-				panelp->mFractionalSize += fraction_delta;
+				panelp->mFractionalSize = new_fractional_size;
 				llassert(!llisnan(panelp->mFractionalSize));
 			}
 			else
@@ -711,7 +734,7 @@ void LLLayoutStack::updatePanelRect( LLLayoutPanel* resized_panel, const LLRect&
 			{	// freeze new size as fraction
 				F32 new_fractional_size = (updated_auto_resize_headroom == 0.f)
 					? MAX_FRACTIONAL_SIZE
-					: llclamp((F32)(new_dim - panelp->getRelevantMinDim()) / updated_auto_resize_headroom, MIN_FRACTIONAL_SIZE, MAX_FRACTIONAL_SIZE);
+					: llclamp(total_visible_fraction * (F32)(new_dim - panelp->getRelevantMinDim()) / updated_auto_resize_headroom, MIN_FRACTIONAL_SIZE, MAX_FRACTIONAL_SIZE);
 				fraction_given_up -= new_fractional_size - panelp->mFractionalSize;
 				fraction_remaining -= panelp->mFractionalSize;
 				panelp->mFractionalSize = new_fractional_size;
@@ -720,7 +743,6 @@ void LLLayoutStack::updatePanelRect( LLLayoutPanel* resized_panel, const LLRect&
 			else
 			{	// freeze new size as original size
 				panelp->mTargetDim = new_dim;
-				fraction_remaining -= fraction_given_up;
 			}
 			which_panel = NEXT_PANEL;
 			break;
@@ -728,14 +750,14 @@ void LLLayoutStack::updatePanelRect( LLLayoutPanel* resized_panel, const LLRect&
 			if (panelp->mAutoResize)
 			{
 				fraction_remaining -= panelp->mFractionalSize;
-				if (fraction_given_up != 0.f)
+				if (resized_panel->mAutoResize)
 				{
 					panelp->mFractionalSize = llclamp(panelp->mFractionalSize + fraction_given_up, MIN_FRACTIONAL_SIZE, MAX_FRACTIONAL_SIZE);
 					fraction_given_up = 0.f;
 				}
 				else
 				{
-					F32 new_fractional_size = llclamp((F32)(panelp->mTargetDim - panelp->getRelevantMinDim() + delta_auto_resize_headroom) 
+					F32 new_fractional_size = llclamp(total_visible_fraction * (F32)(panelp->mTargetDim - panelp->getRelevantMinDim() + delta_auto_resize_headroom) 
 														/ updated_auto_resize_headroom,
 													MIN_FRACTIONAL_SIZE,
 													MAX_FRACTIONAL_SIZE);
@@ -750,7 +772,7 @@ void LLLayoutStack::updatePanelRect( LLLayoutPanel* resized_panel, const LLRect&
 			which_panel = AFTER_RESIZED_PANEL;
 			break;
 		case AFTER_RESIZED_PANEL:
-			if (panelp->mAutoResize)
+			if (panelp->mAutoResize && fraction_given_up != 0.f)
 			{
 				panelp->mFractionalSize = llclamp(panelp->mFractionalSize + (panelp->mFractionalSize / fraction_remaining) * fraction_given_up,
 												MIN_FRACTIONAL_SIZE,
@@ -760,6 +782,8 @@ void LLLayoutStack::updatePanelRect( LLLayoutPanel* resized_panel, const LLRect&
 			break;
 		}
 	}
+	updateLayout();
+	normalizeFractionalSizes();
 }
 
 void LLLayoutStack::reshape(S32 width, S32 height, BOOL called_from_parent)
diff --git a/indra/llui/lllayoutstack.h b/indra/llui/lllayoutstack.h
index efe93f6def..d32caec5f9 100644
--- a/indra/llui/lllayoutstack.h
+++ b/indra/llui/lllayoutstack.h
@@ -72,7 +72,7 @@ public:
 	/*virtual*/ void draw();
 	/*virtual*/ void removeChild(LLView*);
 	/*virtual*/ BOOL postBuild();
-	/*virtual*/ bool addChild(LLView* child, S32 tab_group = 0);
+	/*virtual*/ bool addChild(LLView* child, S32 tab_groupdatefractuiona = 0);
 	/*virtual*/ void reshape(S32 width, S32 height, BOOL called_from_parent = TRUE);
 
 
@@ -112,6 +112,7 @@ private:
 	LLLayoutPanel* findEmbeddedPanel(LLPanel* panelp) const;
 	LLLayoutPanel* findEmbeddedPanelByName(const std::string& name) const;
 	void updateFractionalSizes();
+	void normalizeFractionalSizes();
 	void updatePanelRect( LLLayoutPanel* param1, const LLRect& new_rect );
 
 	S32 mPanelSpacing;
@@ -154,10 +155,10 @@ public:
 	void setVisible(BOOL visible);
 
 	S32 getLayoutDim() const;
-	S32 getMinDim() const { return (mMinDim >= 0 || mAutoResize) ? llmax(0, mMinDim) : getLayoutDim(); }
+	S32 getMinDim() const { return llmax(0, mMinDim); }
 	void setMinDim(S32 value) { mMinDim = value; }
 
-	S32 getExpandedMinDim() const { return mExpandedMinDim >= 0 ? mExpandedMinDim : mMinDim; }
+	S32 getExpandedMinDim() const { return mExpandedMinDim >= 0 ? mExpandedMinDim : getMinDim(); }
 	void setExpandedMinDim(S32 value) { mExpandedMinDim = value; }
 	
 	S32 getRelevantMinDim() const
diff --git a/indra/llui/lllineeditor.cpp b/indra/llui/lllineeditor.cpp
index 06dfc90d83..7e84814c51 100644
--- a/indra/llui/lllineeditor.cpp
+++ b/indra/llui/lllineeditor.cpp
@@ -1630,7 +1630,7 @@ void LLLineEditor::draw()
 	LLRect background( 0, getRect().getHeight(), getRect().getWidth(), 0 );
 	background.stretch( -mBorderThickness );
 
-	S32 lineeditor_v_pad = llround((background.getHeight() - mGLFont->getLineHeight())/2);
+	S32 lineeditor_v_pad = (background.getHeight() - mGLFont->getLineHeight()) / 2;
 
 	drawBackground();
 	
diff --git a/indra/llui/llmenugl.cpp b/indra/llui/llmenugl.cpp
index 95ecbb1c94..ff6928ffda 100644
--- a/indra/llui/llmenugl.cpp
+++ b/indra/llui/llmenugl.cpp
@@ -317,7 +317,7 @@ void LLMenuItemGL::setJumpKey(KEY key)
 // virtual 
 U32 LLMenuItemGL::getNominalHeight( void ) const 
 { 
-	return llround(mFont->getLineHeight()) + MENU_ITEM_PADDING; 
+	return mFont->getLineHeight() + MENU_ITEM_PADDING;
 }
 
 //virtual
@@ -508,19 +508,19 @@ void LLMenuItemGL::draw( void )
 	{
 		if( !mDrawBoolLabel.empty() )
 		{
-			mFont->render( mDrawBoolLabel.getWString(), 0, (F32)LEFT_PAD_PIXELS, ((F32)MENU_ITEM_PADDING / 2.f) + 1.f, color,
+			mFont->render( mDrawBoolLabel.getWString(), 0, (F32)LEFT_PAD_PIXELS, ((F32)MENU_ITEM_PADDING / 2.f), color,
 						   LLFontGL::LEFT, LLFontGL::BOTTOM, LLFontGL::NORMAL, LLFontGL::NO_SHADOW, S32_MAX, S32_MAX, NULL, FALSE );
 		}
-		mFont->render( mLabel.getWString(), 0, (F32)LEFT_PLAIN_PIXELS, ((F32)MENU_ITEM_PADDING / 2.f) + 1.f, color,
+		mFont->render( mLabel.getWString(), 0, (F32)LEFT_PLAIN_PIXELS, ((F32)MENU_ITEM_PADDING / 2.f), color,
 					   LLFontGL::LEFT, LLFontGL::BOTTOM, LLFontGL::NORMAL, LLFontGL::NO_SHADOW, S32_MAX, S32_MAX, NULL, FALSE );
 		if( !mDrawAccelLabel.empty() )
 		{
-			mFont->render( mDrawAccelLabel.getWString(), 0, (F32)getRect().mRight - (F32)RIGHT_PLAIN_PIXELS, ((F32)MENU_ITEM_PADDING / 2.f) + 1.f, color,
+			mFont->render( mDrawAccelLabel.getWString(), 0, (F32)getRect().mRight - (F32)RIGHT_PLAIN_PIXELS, ((F32)MENU_ITEM_PADDING / 2.f), color,
 						   LLFontGL::RIGHT, LLFontGL::BOTTOM, LLFontGL::NORMAL, LLFontGL::NO_SHADOW, S32_MAX, S32_MAX, NULL, FALSE );
 		}
 		if( !mDrawBranchLabel.empty() )
 		{
-			mFont->render( mDrawBranchLabel.getWString(), 0, (F32)getRect().mRight - (F32)RIGHT_PAD_PIXELS, ((F32)MENU_ITEM_PADDING / 2.f) + 1.f, color,
+			mFont->render( mDrawBranchLabel.getWString(), 0, (F32)getRect().mRight - (F32)RIGHT_PAD_PIXELS, ((F32)MENU_ITEM_PADDING / 2.f), color,
 						   LLFontGL::RIGHT, LLFontGL::BOTTOM, LLFontGL::NORMAL, LLFontGL::NO_SHADOW, S32_MAX, S32_MAX, NULL, FALSE );
 		}
 	}
@@ -1966,7 +1966,7 @@ void LLMenuGL::arrange( void )
 
 		// *FIX: create the item first and then ask for its dimensions?
 		S32 spillover_item_width = PLAIN_PAD_PIXELS + LLFontGL::getFontSansSerif()->getWidth( std::string("More") ); // *TODO: Translate
-		S32 spillover_item_height = llround(LLFontGL::getFontSansSerif()->getLineHeight()) + MENU_ITEM_PADDING;
+		S32 spillover_item_height = LLFontGL::getFontSansSerif()->getLineHeight() + MENU_ITEM_PADDING;
 
 		// Scrolling support
 		item_list_t::iterator first_visible_item_iter;
@@ -3082,7 +3082,7 @@ void LLMenuGL::showPopup(LLView* spawning_view, LLMenuGL* menu, S32 x, S32 y)
 		mouse_y + MOUSE_CURSOR_PADDING, 
 		CURSOR_WIDTH + MOUSE_CURSOR_PADDING * 2, 
 		CURSOR_HEIGHT + MOUSE_CURSOR_PADDING * 2);
-	menu->translateIntoRectWithExclusion( menu_region_rect, mouse_rect, FALSE );
+	menu->translateIntoRectWithExclusion( menu_region_rect, mouse_rect );
 	menu->getParent()->sendChildToFront(menu);
 }
 
@@ -3425,7 +3425,7 @@ void LLMenuHolderGL::draw()
 		
 		LLUI::pushMatrix();
 		{
-			LLUI::translate((F32)item_rect.mLeft, (F32)item_rect.mBottom, 0.f);
+			LLUI::translate((F32)item_rect.mLeft, (F32)item_rect.mBottom);
 			selecteditem->getMenu()->drawBackground(selecteditem, interpolant);
 			selecteditem->draw();
 		}
diff --git a/indra/llui/llnotifications.cpp b/indra/llui/llnotifications.cpp
index d232e27ef2..8aa548b974 100644
--- a/indra/llui/llnotifications.cpp
+++ b/indra/llui/llnotifications.cpp
@@ -1412,6 +1412,7 @@ void addPathIfExists(const std::string& new_path, std::vector<std::string>& path
 
 bool LLNotifications::loadTemplates()
 {
+	llinfos << "Reading notifications template" << llendl;
 	std::vector<std::string> search_paths;
 	
 	std::string skin_relative_path = gDirUtilp->getDirDelimiter() + LLUI::getSkinPath() + gDirUtilp->getDirDelimiter() + "notifications.xml";
@@ -1484,6 +1485,8 @@ bool LLNotifications::loadTemplates()
 		mTemplates[notification.name] = LLNotificationTemplatePtr(new LLNotificationTemplate(notification));
 	}
 
+	llinfos << "...done" << llendl;
+
 	return true;
 }
 
diff --git a/indra/llui/llscrollcontainer.cpp b/indra/llui/llscrollcontainer.cpp
index ad4cc20d9a..20bed050ad 100644
--- a/indra/llui/llscrollcontainer.cpp
+++ b/indra/llui/llscrollcontainer.cpp
@@ -378,23 +378,21 @@ void LLScrollContainer::calcVisibleSize( S32 *visible_width, S32 *visible_height
 
 	if (!mHideScrollbar)
 	{
-		if( *visible_height < doc_height )
+		// Note: 1 pixel change can happen on final animation and should not trigger 
+		// the display of sliders.
+		if ((doc_height - *visible_height) > 1)
 		{
 			*show_v_scrollbar = TRUE;
 			*visible_width -= scrollbar_size;
 		}
-
-		if( *visible_width < doc_width )
+		if ((doc_width - *visible_width) > 1)
 		{
 			*show_h_scrollbar = TRUE;
 			*visible_height -= scrollbar_size;
-
-			// Must retest now that visible_height has changed
-			if( !*show_v_scrollbar && (*visible_height < doc_height) )
-			{
-				*show_v_scrollbar = TRUE;
-				*visible_width -= scrollbar_size;
-			}
+			// Note: Do *not* recompute *show_v_scrollbar here because with
+			// the (- scrollbar_size) we just did we will always add a vertical scrollbar
+			// even if the height of the items is actually less than the visible size.
+			// Fear not though: there's enough calcVisibleSize() calls to add a vertical slider later.
 		}
 	}
 }
diff --git a/indra/llui/llscrolllistcell.cpp b/indra/llui/llscrolllistcell.cpp
index 9d25c7180d..8000efad0e 100644
--- a/indra/llui/llscrolllistcell.cpp
+++ b/indra/llui/llscrolllistcell.cpp
@@ -232,7 +232,7 @@ BOOL LLScrollListText::getVisible() const
 //virtual 
 S32 LLScrollListText::getHeight() const
 {
-	return llround(mFont->getLineHeight());
+	return mFont->getLineHeight();
 }
 
 
@@ -306,7 +306,7 @@ void LLScrollListText::draw(const LLColor4& color, const LLColor4& highlight_col
 			break;
 		}
 		LLRect highlight_rect(left - 2, 
-				llround(mFont->getLineHeight()) + 1, 
+				mFont->getLineHeight() + 1, 
 				left + mFont->getWidth(mText.getString(), mHighlightOffset, mHighlightCount) + 1, 
 				1);
 		mRoundedRectImage->draw(highlight_rect, highlight_color);
@@ -329,7 +329,7 @@ void LLScrollListText::draw(const LLColor4& color, const LLColor4& highlight_col
 		break;
 	}
 	mFont->render(mText.getWString(), 0, 
-					start_x, 2.f,
+					start_x, 0.f,
 					display_color,
 					mFontAlignment,
 					LLFontGL::BOTTOM, 
diff --git a/indra/llui/llscrolllistitem.cpp b/indra/llui/llscrolllistitem.cpp
index d95752e31c..5a1e96ab03 100644
--- a/indra/llui/llscrolllistitem.cpp
+++ b/indra/llui/llscrolllistitem.cpp
@@ -138,7 +138,7 @@ void LLScrollListItem::draw(const LLRect& rect, const LLColor4& fg_color, const
 
 		LLUI::pushMatrix();
 		{
-			LLUI::translate((F32) cur_x, (F32) rect.mBottom, 0.0f);
+			LLUI::translate((F32) cur_x, (F32) rect.mBottom);
 
 			cell->draw( fg_color, highlight_color );
 		}
diff --git a/indra/llui/llscrolllistitem.h b/indra/llui/llscrolllistitem.h
index 611df729b4..13655b5873 100644
--- a/indra/llui/llscrolllistitem.h
+++ b/indra/llui/llscrolllistitem.h
@@ -33,10 +33,10 @@
 #include "v4color.h"
 #include "llinitparam.h"
 #include "llscrolllistcell.h"
+#include "llcoord.h"
 
 #include <vector>
 
-class LLCoordGL;
 class LLCheckBoxCtrl;
 class LLResizeBar;
 class LLScrollListCtrl;
diff --git a/indra/llui/lltextbase.cpp b/indra/llui/lltextbase.cpp
index 0040be45c7..7aeeae298f 100644
--- a/indra/llui/lltextbase.cpp
+++ b/indra/llui/lltextbase.cpp
@@ -1192,7 +1192,10 @@ void LLTextBase::reflow()
 
 		// shrink document to minimum size (visible portion of text widget)
 		// to force inlined widgets with follows set to shrink
-		mDocumentView->reshape(mVisibleTextRect.getWidth(), mDocumentView->getRect().getHeight());
+		if (mWordWrap)
+		{
+			mDocumentView->reshape(mVisibleTextRect.getWidth(), mDocumentView->getRect().getHeight());
+		}
 
 		S32 cur_top = 0;
 
@@ -2157,7 +2160,7 @@ LLRect LLTextBase::getLocalRectFromDocIndex(S32 pos) const
 	{ 
 		// return default height rect in upper left
 		local_rect = content_window_rect;
-		local_rect.mBottom = local_rect.mTop - (S32)(mDefaultFont->getLineHeight());
+		local_rect.mBottom = local_rect.mTop - mDefaultFont->getLineHeight();
 		return local_rect;
 	}
 
@@ -2380,6 +2383,9 @@ S32 LLTextBase::getEditableIndex(S32 index, bool increasing_direction)
 
 void LLTextBase::updateRects()
 {
+	LLRect old_text_rect = mVisibleTextRect;
+	mVisibleTextRect = mScroller ? mScroller->getContentWindowRect() : getLocalRect();
+
 	if (mLineInfoList.empty()) 
 	{
 		mTextBoundingRect = LLRect(0, mVPad, mHPad, 0);
@@ -2395,10 +2401,24 @@ void LLTextBase::updateRects()
 		}
 
 		mTextBoundingRect.mTop += mVPad;
-		// subtract a pixel off the bottom to deal with rounding errors in measuring font height
-		mTextBoundingRect.mBottom -= 1;
 
-		S32 delta_pos = -mTextBoundingRect.mBottom;
+		S32 delta_pos = 0;
+		
+		switch(mVAlign)
+		{
+		case LLFontGL::TOP:
+			delta_pos = llmax(mVisibleTextRect.getHeight() - mTextBoundingRect.mTop, -mTextBoundingRect.mBottom);
+			break;
+		case LLFontGL::VCENTER:
+			delta_pos = (llmax(mVisibleTextRect.getHeight() - mTextBoundingRect.mTop, -mTextBoundingRect.mBottom) + (mVisibleTextRect.mBottom - mTextBoundingRect.mBottom)) / 2;
+			break;
+		case LLFontGL::BOTTOM:
+			delta_pos = mVisibleTextRect.mBottom - mTextBoundingRect.mBottom;
+			break;
+		case LLFontGL::BASELINE:
+			// do nothing
+			break;
+		}
 		// move line segments to fit new document rect
 		for (line_list_t::iterator it = mLineInfoList.begin(); it != mLineInfoList.end(); ++it)
 		{
@@ -2408,8 +2428,9 @@ void LLTextBase::updateRects()
 	}
 
 	// update document container dimensions according to text contents
-	LLRect doc_rect = mTextBoundingRect;
+	LLRect doc_rect;
 	// use old mVisibleTextRect constraint document to width of viewable region
+	doc_rect.mBottom = llmin(mVisibleTextRect.mBottom,  mTextBoundingRect.mBottom);
 	doc_rect.mLeft = 0;
 
 	// allow horizontal scrolling?
@@ -2419,11 +2440,22 @@ void LLTextBase::updateRects()
 	doc_rect.mRight = mScroller 
 		? llmax(mVisibleTextRect.getWidth(), mTextBoundingRect.mRight)
 		: mVisibleTextRect.getWidth();
+	doc_rect.mTop = llmax(mVisibleTextRect.mTop, mTextBoundingRect.mTop);
 
 	if (!mScroller)
 	{
 		// push doc rect to top of text widget
-		doc_rect.translate(0, mVisibleTextRect.getHeight() - doc_rect.mTop);
+		switch(mVAlign)
+		{
+		case LLFontGL::TOP:
+			doc_rect.translate(0, mVisibleTextRect.getHeight() - doc_rect.mTop);
+			break;
+		case LLFontGL::VCENTER:
+			doc_rect.translate(0, (mVisibleTextRect.getHeight() - doc_rect.mTop) / 2);
+		case LLFontGL::BOTTOM:
+		default:
+			break;
+		}
 	}
 
 	mDocumentView->setShape(doc_rect);
@@ -2431,7 +2463,6 @@ void LLTextBase::updateRects()
 	//update mVisibleTextRect *after* mDocumentView has been resized
 	// so that scrollbars are added if document needs to scroll
 	// since mVisibleTextRect does not include scrollbars
-	LLRect old_text_rect = mVisibleTextRect;
 	mVisibleTextRect = mScroller ? mScroller->getContentWindowRect() : getLocalRect();
 	//FIXME: replace border with image?
 	if (mBorderVisible)
@@ -2444,9 +2475,27 @@ void LLTextBase::updateRects()
 	}
 
 	// update document container again, using new mVisibleTextRect (that has scrollbars enabled as needed)
+	doc_rect.mBottom = llmin(mVisibleTextRect.mBottom,  mTextBoundingRect.mBottom);
+	doc_rect.mLeft = 0;
 	doc_rect.mRight = mScroller 
 		? llmax(mVisibleTextRect.getWidth(), mTextBoundingRect.mRight)
 		: mVisibleTextRect.getWidth();
+	doc_rect.mTop = llmax(mVisibleTextRect.mTop, mTextBoundingRect.mTop);
+	if (!mScroller)
+	{
+		// push doc rect to top of text widget
+		switch(mVAlign)
+		{
+		case LLFontGL::TOP:
+			doc_rect.translate(0, mVisibleTextRect.getHeight() - doc_rect.mTop);
+			break;
+		case LLFontGL::VCENTER:
+			doc_rect.translate(0, (mVisibleTextRect.getHeight() - doc_rect.mTop) / 2);
+		case LLFontGL::BOTTOM:
+		default:
+			break;
+		}
+	}
 	mDocumentView->setShape(doc_rect);
 }
 
@@ -2560,8 +2609,7 @@ BOOL LLTextSegment::handleScrollWheel(S32 x, S32 y, S32 clicks) { return FALSE;
 BOOL LLTextSegment::handleToolTip(S32 x, S32 y, MASK mask) { return FALSE; }
 const std::string&	LLTextSegment::getName() const 
 {
-	static std::string empty_string("");
-	return empty_string; 
+	return LLStringUtil::null;
 }
 void LLTextSegment::onMouseCaptureLost() {}
 void LLTextSegment::screenPointToLocal(S32 screen_x, S32 screen_y, S32* local_x, S32* local_y) const {}
@@ -2578,7 +2626,7 @@ LLNormalTextSegment::LLNormalTextSegment( LLStyleConstSP style, S32 start, S32 e
 	mToken(NULL),
 	mEditor(editor)
 {
-	mFontHeight = llceil(mStyle->getFont()->getLineHeight());
+	mFontHeight = mStyle->getFont()->getLineHeight();
 
 	LLUIImagePtr image = mStyle->getImage();
 	if (image.notNull())
@@ -2594,7 +2642,7 @@ LLNormalTextSegment::LLNormalTextSegment( const LLColor4& color, S32 start, S32
 {
 	mStyle = new LLStyle(LLStyle::Params().visible(is_visible).color(color));
 
-	mFontHeight = llceil(mStyle->getFont()->getLineHeight());
+	mFontHeight = mStyle->getFont()->getLineHeight();
 }
 
 LLNormalTextSegment::~LLNormalTextSegment()
@@ -2962,11 +3010,11 @@ LLLineBreakTextSegment::LLLineBreakTextSegment(S32 pos):LLTextSegment(pos,pos+1)
 {
 	LLStyleSP s( new LLStyle(LLStyle::Params().visible(true)));
 
-	mFontHeight = llceil(s->getFont()->getLineHeight());
+	mFontHeight = s->getFont()->getLineHeight();
 }
 LLLineBreakTextSegment::LLLineBreakTextSegment(LLStyleConstSP style,S32 pos):LLTextSegment(pos,pos+1)
 {
-	mFontHeight = llceil(style->getFont()->getLineHeight());
+	mFontHeight = style->getFont()->getLineHeight();
 }
 LLLineBreakTextSegment::~LLLineBreakTextSegment()
 {
@@ -3003,7 +3051,7 @@ static const S32 IMAGE_HPAD = 3;
 bool LLImageTextSegment::getDimensions(S32 first_char, S32 num_chars, S32& width, S32& height) const
 {
 	width = 0;
-	height = llceil(mStyle->getFont()->getLineHeight());;
+	height = mStyle->getFont()->getLineHeight();
 
 	LLUIImagePtr image = mStyle->getImage();
 	if( num_chars>0 && image.notNull())
diff --git a/indra/llui/lltexteditor.cpp b/indra/llui/lltexteditor.cpp
index 3a23ce1cac..3409b6817d 100644
--- a/indra/llui/lltexteditor.cpp
+++ b/indra/llui/lltexteditor.cpp
@@ -1992,7 +1992,7 @@ void LLTextEditor::drawPreeditMarker()
 		return;
 	}
 		
-	const S32 line_height = llround( mDefaultFont->getLineHeight() );
+	const S32 line_height = mDefaultFont->getLineHeight();
 
 	S32 line_start = getLineStart(cur_line);
 	S32 line_y = mVisibleTextRect.mTop - line_height;
@@ -2715,7 +2715,7 @@ BOOL LLTextEditor::getPreeditLocation(S32 query_offset, LLCoordGL *coord, LLRect
 
     const LLWString textString(getWText());
 	const llwchar * const text = textString.c_str();
-	const S32 line_height = llround(mDefaultFont->getLineHeight());
+	const S32 line_height = mDefaultFont->getLineHeight();
 
 	if (coord)
 	{
@@ -2818,7 +2818,7 @@ void LLTextEditor::markAsPreedit(S32 position, S32 length)
 
 S32 LLTextEditor::getPreeditFontSize() const
 {
-	return llround(mDefaultFont->getLineHeight() * LLUI::sGLScaleFactor.mV[VY]);
+	return llround((F32)mDefaultFont->getLineHeight() * LLUI::sGLScaleFactor.mV[VY]);
 }
 
 BOOL LLTextEditor::isDirty() const
diff --git a/indra/llui/lltoolbar.cpp b/indra/llui/lltoolbar.cpp
index 9b31a6449d..81ea0ebf0c 100644
--- a/indra/llui/lltoolbar.cpp
+++ b/indra/llui/lltoolbar.cpp
@@ -827,7 +827,7 @@ void LLToolBar::draw()
 	// rect may have shifted during layout
 	LLUI::popMatrix();
 	LLUI::pushMatrix();
-	LLUI::translate((F32)getRect().mLeft, (F32)getRect().mBottom, 0.f);
+	LLUI::translate((F32)getRect().mLeft, (F32)getRect().mBottom);
 
 	// Position the caret 
 	LLIconCtrl* caret = getChild<LLIconCtrl>("caret");
diff --git a/indra/llui/lltooltip.cpp b/indra/llui/lltooltip.cpp
index 23cdd9ad9a..f737d48abf 100644
--- a/indra/llui/lltooltip.cpp
+++ b/indra/llui/lltooltip.cpp
@@ -180,6 +180,7 @@ LLToolTip::LLToolTip(const LLToolTip::Params& p)
 	params.font = p.font;
 	params.use_ellipses = true;
 	params.wrap = p.wrap;
+	params.font_valign = LLFontGL::VCENTER;
 	params.parse_urls = false; // disallow hyperlinks in tooltips, as they want to spawn their own explanatory tooltips
 	mTextBox = LLUICtrlFactory::create<LLTextBox> (params);
 	addChild(mTextBox);
@@ -190,7 +191,6 @@ LLToolTip::LLToolTip(const LLToolTip::Params& p)
 	{
 		LLButton::Params icon_params;
 		icon_params.name = "tooltip_info";
-		icon_params.label(""); // provid label but set to empty so name does not overwrite it -angela
 		LLRect icon_rect;
 		LLUIImage* imagep = p.image;
 		TOOLTIP_ICON_SIZE = (imagep ? imagep->getWidth() : 16);
@@ -291,6 +291,12 @@ void LLToolTip::initFromParams(const LLToolTip::Params& p)
 	S32 text_width = llmin(p.max_width(), mTextBox->getTextPixelWidth());
 	S32 text_height = mTextBox->getTextPixelHeight();
 	mTextBox->reshape(text_width, text_height);
+	if (mInfoButton)
+	{
+		LLRect text_rect = mTextBox->getRect();
+		LLRect icon_rect = mInfoButton->getRect();
+		mTextBox->translate(0, icon_rect.getCenterY() - text_rect.getCenterY());
+	}
 
 	// reshape tooltip panel to fit text box
 	LLRect tooltip_rect = calcBoundingRect();
@@ -299,6 +305,8 @@ void LLToolTip::initFromParams(const LLToolTip::Params& p)
 	tooltip_rect.mBottom = 0;
 	tooltip_rect.mLeft = 0;
 
+	mTextBox->reshape(mTextBox->getRect().getWidth(), llmax(mTextBox->getRect().getHeight(), tooltip_rect.getHeight() - 2 * mPadding));
+
 	setShape(tooltip_rect);
 }
 
diff --git a/indra/llui/llui.cpp b/indra/llui/llui.cpp
index 6b74c5a6be..b5e27616b7 100644
--- a/indra/llui/llui.cpp
+++ b/indra/llui/llui.cpp
@@ -972,43 +972,53 @@ void gl_ring( F32 radius, F32 width, const LLColor4& center_color, const LLColor
 // Draw gray and white checkerboard with black border
 void gl_rect_2d_checkerboard(const LLRect& rect, GLfloat alpha)
 {
-	// Initialize the first time this is called.
-	const S32 PIXELS = 32;
-	static GLubyte checkerboard[PIXELS * PIXELS];
-	static BOOL first = TRUE;
-	if( first )
-	{
-		for( S32 i = 0; i < PIXELS; i++ )
+	if (!LLGLSLShader::sNoFixedFunction)
+	{ 
+		// Initialize the first time this is called.
+		const S32 PIXELS = 32;
+		static GLubyte checkerboard[PIXELS * PIXELS];
+		static BOOL first = TRUE;
+		if( first )
 		{
-			for( S32 j = 0; j < PIXELS; j++ )
+			for( S32 i = 0; i < PIXELS; i++ )
 			{
-				checkerboard[i * PIXELS + j] = ((i & 1) ^ (j & 1)) * 0xFF;
+				for( S32 j = 0; j < PIXELS; j++ )
+				{
+					checkerboard[i * PIXELS + j] = ((i & 1) ^ (j & 1)) * 0xFF;
+				}
 			}
+			first = FALSE;
 		}
-		first = FALSE;
-	}
 	
-	gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
+		gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
 
-	// ...white squares
-	gGL.color4f( 1.f, 1.f, 1.f, alpha );
-	gl_rect_2d(rect);
+		// ...white squares
+		gGL.color4f( 1.f, 1.f, 1.f, alpha );
+		gl_rect_2d(rect);
 
-	// ...gray squares
-	gGL.color4f( .7f, .7f, .7f, alpha );
-	gGL.flush();
+		// ...gray squares
+		gGL.color4f( .7f, .7f, .7f, alpha );
+		gGL.flush();
 
-	if (!LLGLSLShader::sNoFixedFunction)
-	{ //polygon stipple is deprecated
 		glPolygonStipple( checkerboard );
 
 		LLGLEnable polygon_stipple(GL_POLYGON_STIPPLE);
 		gl_rect_2d(rect);
 	}
 	else
-	{
-		gl_rect_2d(rect);
+	{ //polygon stipple is deprecated, use "Checker" texture
+		LLPointer<LLUIImage> img = LLUI::getUIImage("Checker");
+		gGL.getTexUnit(0)->bind(img->getImage());
+		gGL.getTexUnit(0)->setTextureAddressMode(LLTexUnit::TAM_WRAP);
+		gGL.getTexUnit(0)->setTextureFilteringOption(LLTexUnit::TFO_POINT);
+
+		LLColor4 color(1.f, 1.f, 1.f, alpha);
+		LLRectf uv_rect(0, 0, rect.getWidth()/32.f, rect.getHeight()/32.f);
+
+		gl_draw_scaled_image(rect.mLeft, rect.mBottom, rect.getWidth(), rect.getHeight(),
+			img->getImage(), color, uv_rect);
 	}
+	
 	gGL.flush();
 }
 
@@ -1688,21 +1698,22 @@ void LLUI::translate(F32 x, F32 y, F32 z)
 	gGL.translateUI(x,y,z);
 	LLFontGL::sCurOrigin.mX += (S32) x;
 	LLFontGL::sCurOrigin.mY += (S32) y;
-	LLFontGL::sCurOrigin.mZ += z;
+	LLFontGL::sCurDepth += z;
 }
 
 //static
 void LLUI::pushMatrix()
 {
 	gGL.pushUIMatrix();
-	LLFontGL::sOriginStack.push_back(LLFontGL::sCurOrigin);
+	LLFontGL::sOriginStack.push_back(std::make_pair(LLFontGL::sCurOrigin, LLFontGL::sCurDepth));
 }
 
 //static
 void LLUI::popMatrix()
 {
 	gGL.popUIMatrix();
-	LLFontGL::sCurOrigin = *LLFontGL::sOriginStack.rbegin();
+	LLFontGL::sCurOrigin = LLFontGL::sOriginStack.back().first;
+	LLFontGL::sCurDepth = LLFontGL::sOriginStack.back().second;
 	LLFontGL::sOriginStack.pop_back();
 }
 
@@ -1712,7 +1723,7 @@ void LLUI::loadIdentity()
 	gGL.loadUIIdentity(); 
 	LLFontGL::sCurOrigin.mX = 0;
 	LLFontGL::sCurOrigin.mY = 0;
-	LLFontGL::sCurOrigin.mZ = 0;
+	LLFontGL::sCurDepth = 0.f;
 }
 
 //static
@@ -1735,10 +1746,7 @@ void LLUI::setMousePositionScreen(S32 x, S32 y)
 	screen_x = llround((F32)x * sGLScaleFactor.mV[VX]);
 	screen_y = llround((F32)y * sGLScaleFactor.mV[VY]);
 	
-	LLCoordWindow window_point;
-	LLView::getWindow()->convertCoords(LLCoordGL(screen_x, screen_y), &window_point);
-
-	LLView::getWindow()->setCursorPosition(window_point);
+	LLView::getWindow()->setCursorPosition(LLCoordGL(screen_x, screen_y).convert());
 }
 
 //static 
@@ -1746,8 +1754,7 @@ void LLUI::getMousePositionScreen(S32 *x, S32 *y)
 {
 	LLCoordWindow cursor_pos_window;
 	getWindow()->getCursorPosition(&cursor_pos_window);
-	LLCoordGL cursor_pos_gl;
-	getWindow()->convertCoords(cursor_pos_window, &cursor_pos_gl);
+	LLCoordGL cursor_pos_gl(cursor_pos_window.convert());
 	*x = llround((F32)cursor_pos_gl.mX / sGLScaleFactor.mV[VX]);
 	*y = llround((F32)cursor_pos_gl.mY / sGLScaleFactor.mV[VX]);
 }
@@ -2052,7 +2059,7 @@ void LLUI::positionViewNearMouse(LLView* view, S32 spawn_x, S32 spawn_y)
 	// Start at spawn position (using left/top)
 	view->setOrigin( local_x, local_y - view->getRect().getHeight());
 	// Make sure we're on-screen and not overlapping the mouse
-	view->translateIntoRectWithExclusion( virtual_window_rect, mouse_rect, FALSE );
+	view->translateIntoRectWithExclusion( virtual_window_rect, mouse_rect );
 }
 
 LLView* LLUI::resolvePath(LLView* context, const std::string& path)
diff --git a/indra/llui/lluistring.cpp b/indra/llui/lluistring.cpp
index ac69d3bf85..c4e073ccdb 100644
--- a/indra/llui/lluistring.cpp
+++ b/indra/llui/lluistring.cpp
@@ -128,17 +128,13 @@ void LLUIString::updateResult() const
 	}
 	mResult = mOrig;
 	
-	// get the defailt args + local args
-	if (!mArgs || mArgs->empty())
+	// get the default args + local args
+	LLStringUtil::format_map_t combined_args = LLTrans::getDefaultArgs();
+	if (mArgs && !mArgs->empty())
 	{
-		LLStringUtil::format(mResult, LLTrans::getDefaultArgs());
-	}
-	else
-	{
-		LLStringUtil::format_map_t combined_args = LLTrans::getDefaultArgs();
 		combined_args.insert(mArgs->begin(), mArgs->end());
-		LLStringUtil::format(mResult, combined_args);
 	}
+	LLStringUtil::format(mResult, combined_args);
 }
 
 void LLUIString::updateWResult() const
diff --git a/indra/llui/llview.cpp b/indra/llui/llview.cpp
index e1ee0a5b14..421166dcd4 100644
--- a/indra/llui/llview.cpp
+++ b/indra/llui/llview.cpp
@@ -1106,7 +1106,7 @@ void LLView::drawChildren()
 				{
 					LLUI::pushMatrix();
 					{
-						LLUI::translate((F32)viewp->getRect().mLeft, (F32)viewp->getRect().mBottom, 0.f);
+						LLUI::translate((F32)viewp->getRect().mLeft, (F32)viewp->getRect().mBottom);
 						// flag the fact we are in draw here, in case overridden draw() method attempts to remove this widget
 						viewp->mInDraw = true;
 						viewp->draw();
@@ -1159,7 +1159,7 @@ void LLView::drawDebugRect()
 
 		if (getUseBoundingRect())
 		{
-			LLUI::translate((F32)mBoundingRect.mLeft - (F32)mRect.mLeft, (F32)mBoundingRect.mBottom - (F32)mRect.mBottom, 0.f);
+			LLUI::translate((F32)mBoundingRect.mLeft - (F32)mRect.mLeft, (F32)mBoundingRect.mBottom - (F32)mRect.mBottom);
 		}
 
 		LLRect debug_rect = getUseBoundingRect() ? mBoundingRect : mRect;
@@ -1231,7 +1231,7 @@ void LLView::drawChild(LLView* childp, S32 x_offset, S32 y_offset, BOOL force_dr
 			gGL.matrixMode(LLRender::MM_MODELVIEW);
 			LLUI::pushMatrix();
 			{
-				LLUI::translate((F32)childp->getRect().mLeft + x_offset, (F32)childp->getRect().mBottom + y_offset, 0.f);
+				LLUI::translate((F32)childp->getRect().mLeft + x_offset, (F32)childp->getRect().mBottom + y_offset);
 				childp->draw();
 			}
 			LLUI::popMatrix();
@@ -1300,7 +1300,10 @@ void LLView::reshape(S32 width, S32 height, BOOL called_from_parent)
 			S32 delta_x = child_rect.mLeft - viewp->getRect().mLeft;
 			S32 delta_y = child_rect.mBottom - viewp->getRect().mBottom;
 			viewp->translate( delta_x, delta_y );
-			viewp->reshape(child_rect.getWidth(), child_rect.getHeight());
+			if (child_rect.getWidth() != viewp->getRect().getWidth() || child_rect.getHeight() != viewp->getRect().getHeight())
+			{
+				viewp->reshape(child_rect.getWidth(), child_rect.getHeight());
+			}
 		}
 	}
 
@@ -1616,59 +1619,30 @@ LLView* LLView::findNextSibling(LLView* child)
 }
 
 
-LLCoordGL getNeededTranslation(const LLRect& input, const LLRect& constraint, BOOL allow_partial_outside)
+LLCoordGL getNeededTranslation(const LLRect& input, const LLRect& constraint, S32 min_overlap_pixels)
 {
 	LLCoordGL delta;
 
-	if (allow_partial_outside)
-	{
-		const S32 KEEP_ONSCREEN_PIXELS = 16;
+	const S32 KEEP_ONSCREEN_PIXELS_WIDTH = llmin(min_overlap_pixels, input.getWidth());
+	const S32 KEEP_ONSCREEN_PIXELS_HEIGHT = llmin(min_overlap_pixels, input.getHeight());
 
-		if( input.mRight - KEEP_ONSCREEN_PIXELS < constraint.mLeft )
-		{
-			delta.mX = constraint.mLeft - (input.mRight - KEEP_ONSCREEN_PIXELS);
-		}
-		else
-		if( input.mLeft + KEEP_ONSCREEN_PIXELS > constraint.mRight )
-		{
-			delta.mX = constraint.mRight - (input.mLeft + KEEP_ONSCREEN_PIXELS);
-		}
+	if( input.mRight - KEEP_ONSCREEN_PIXELS_WIDTH < constraint.mLeft )
+	{
+		delta.mX = constraint.mLeft - (input.mRight - KEEP_ONSCREEN_PIXELS_WIDTH);
+	}
+	else if( input.mLeft + KEEP_ONSCREEN_PIXELS_WIDTH > constraint.mRight )
+	{
+		delta.mX = constraint.mRight - (input.mLeft + KEEP_ONSCREEN_PIXELS_WIDTH);
+	}
 
-		if( input.mTop > constraint.mTop )
-		{
-			delta.mY = constraint.mTop - input.mTop;
-		}
-		else
-		if( input.mTop - KEEP_ONSCREEN_PIXELS < constraint.mBottom )
-		{
-			delta.mY = constraint.mBottom - (input.mTop - KEEP_ONSCREEN_PIXELS);
-		}
+	if( input.mTop > constraint.mTop )
+	{
+		delta.mY = constraint.mTop - input.mTop;
 	}
 	else
+	if( input.mTop - KEEP_ONSCREEN_PIXELS_HEIGHT < constraint.mBottom )
 	{
-		if( input.mLeft < constraint.mLeft )
-		{
-			delta.mX = constraint.mLeft - input.mLeft;
-		}
-		else
-		if( input.mRight > constraint.mRight )
-		{
-			delta.mX = constraint.mRight - input.mRight;
-			// compensate for left edge possible going off screen
-			delta.mX += llmax( 0, input.getWidth() - constraint.getWidth() );
-		}
-
-		if( input.mTop > constraint.mTop )
-		{
-			delta.mY = constraint.mTop - input.mTop;
-		}
-		else
-		if( input.mBottom < constraint.mBottom )
-		{
-			delta.mY = constraint.mBottom - input.mBottom;
-			// compensate for top edge possible going off screen
-			delta.mY -= llmax( 0, input.getHeight() - constraint.getHeight() );
-		}
+		delta.mY = constraint.mBottom - (input.mTop - KEEP_ONSCREEN_PIXELS_HEIGHT);
 	}
 
 	return delta;
@@ -1677,9 +1651,9 @@ LLCoordGL getNeededTranslation(const LLRect& input, const LLRect& constraint, BO
 // Moves the view so that it is entirely inside of constraint.
 // If the view will not fit because it's too big, aligns with the top and left.
 // (Why top and left?  That's where the drag bars are for floaters.)
-BOOL LLView::translateIntoRect(const LLRect& constraint, BOOL allow_partial_outside )
+BOOL LLView::translateIntoRect(const LLRect& constraint, S32 min_overlap_pixels)
 {
-	LLCoordGL translation = getNeededTranslation(getRect(), constraint, allow_partial_outside);
+	LLCoordGL translation = getNeededTranslation(getRect(), constraint, min_overlap_pixels);
 
 	if (translation.mX != 0 || translation.mY != 0)
 	{
@@ -1691,9 +1665,9 @@ BOOL LLView::translateIntoRect(const LLRect& constraint, BOOL allow_partial_outs
 
 // move this view into "inside" but not onto "exclude"
 // NOTE: if this view is already contained in "inside", we ignore the "exclude" rect
-BOOL LLView::translateIntoRectWithExclusion( const LLRect& inside, const LLRect& exclude, BOOL allow_partial_outside )
+BOOL LLView::translateIntoRectWithExclusion( const LLRect& inside, const LLRect& exclude, S32 min_overlap_pixels)
 {
-	LLCoordGL translation = getNeededTranslation(getRect(), inside, allow_partial_outside);
+	LLCoordGL translation = getNeededTranslation(getRect(), inside, min_overlap_pixels);
 	
 	if (translation.mX != 0 || translation.mY != 0)
 	{
diff --git a/indra/llui/llview.h b/indra/llui/llview.h
index f1fac5f69c..fd19309a56 100644
--- a/indra/llui/llview.h
+++ b/indra/llui/llview.h
@@ -370,8 +370,8 @@ public:
 	virtual void	reshape(S32 width, S32 height, BOOL called_from_parent = TRUE);
 	virtual void	translate( S32 x, S32 y );
 	void			setOrigin( S32 x, S32 y )	{ mRect.translate( x - mRect.mLeft, y - mRect.mBottom ); }
-	BOOL			translateIntoRect( const LLRect& constraint, BOOL allow_partial_outside );
-	BOOL			translateIntoRectWithExclusion( const LLRect& inside, const LLRect& exclude, BOOL allow_partial_outside );
+	BOOL			translateIntoRect( const LLRect& constraint, S32 min_overlap_pixels = S32_MAX);
+	BOOL			translateIntoRectWithExclusion( const LLRect& inside, const LLRect& exclude, S32 min_overlap_pixels = S32_MAX);
 	void			centerWithin(const LLRect& bounds);
 
 	void	setShape(const LLRect& new_rect, bool by_user = false);