EXP-890 FIX -- Resizing inbox or outbox to minimum size while open does not show present items when hte box is next opened

EXP-897 FIX -- Black box shown in UI when shrinking Inbox down in size

* Layout panel now supports "expanded_min_dim" parameter which allows a different min
  size to be specified when the layout panel is collapsed vs expanded.
* Inbox and Outbox expanded_min_dim attributes are now set to be larger than min dim
  so they can not be collapsed all the way when they are expanded.

2 files changed, 77 insertions, 54 deletions

diff --git a/indra/llui/lllayoutstack.cpp b/indra/llui/lllayoutstack.cpp
index 8a92796942..d87ee428aa 100644
--- a/indra/llui/lllayoutstack.cpp
+++ b/indra/llui/lllayoutstack.cpp
@@ -49,6 +49,8 @@ void LLLayoutStack::OrientationNames::declareValues()
 //
 LLLayoutPanel::LLLayoutPanel(const Params& p)	
 :	LLPanel(p),
+	mExpandedMinDimSpecified(false),
+	mExpandedMinDim(p.min_dim),
  	mMinDim(p.min_dim), 
  	mMaxDim(p.max_dim), 
  	mAutoResize(p.auto_resize),
@@ -58,6 +60,13 @@ LLLayoutPanel::LLLayoutPanel(const Params& p)
 	mVisibleAmt(1.f), // default to fully visible
 	mResizeBar(NULL) 
 {
+	// Set the expanded min dim if it is provided, otherwise it gets the p.min_dim value
+	if (p.expanded_min_dim.isProvided())
+	{
+		mExpandedMinDimSpecified = true;
+		mExpandedMinDim = p.expanded_min_dim();
+	}
+	
 	// panels initialized as hidden should not start out partially visible
 	if (!getVisible())
 	{
@@ -84,13 +93,13 @@ F32 LLLayoutPanel::getCollapseFactor(LLLayoutStack::ELayoutOrientation orientati
 	if (orientation == LLLayoutStack::HORIZONTAL)
 	{
 		F32 collapse_amt = 
-			clamp_rescale(mCollapseAmt, 0.f, 1.f, 1.f, (F32)mMinDim / (F32)llmax(1, getRect().getWidth()));
+			clamp_rescale(mCollapseAmt, 0.f, 1.f, 1.f, getRelevantMinDim() / (F32)llmax(1, getRect().getWidth()));
 		return mVisibleAmt * collapse_amt;
 	}
 	else
 	{
 		F32 collapse_amt = 
-			clamp_rescale(mCollapseAmt, 0.f, 1.f, 1.f, llmin(1.f, (F32)mMinDim / (F32)llmax(1, getRect().getHeight())));
+			clamp_rescale(mCollapseAmt, 0.f, 1.f, 1.f, llmin(1.f, getRelevantMinDim() / (F32)llmax(1, getRect().getHeight())));
 		return mVisibleAmt * collapse_amt;
 	}
 }
@@ -281,9 +290,9 @@ bool LLLayoutStack::getPanelMinSize(const std::string& panel_name, S32* min_dimp
 {
 	LLLayoutPanel* panel = findEmbeddedPanelByName(panel_name);
 
-	if (panel)
+	if (panel && min_dimp)
 	{
-		if (min_dimp) *min_dimp = panel->mMinDim;
+		*min_dimp = panel->getRelevantMinDim();
 	}
 
 	return NULL != panel;
@@ -316,7 +325,7 @@ void LLLayoutStack::updateLayout(BOOL force_resize)
 	e_panel_list_t::iterator panel_it;
 	for (panel_it = mPanels.begin(); panel_it != mPanels.end();	++panel_it)
 	{
-		LLPanel* panelp = (*panel_it);
+		LLLayoutPanel* panelp = (*panel_it);
 		if (panelp->getVisible()) 
 		{
 			if (mAnimate)
@@ -366,9 +375,9 @@ void LLLayoutStack::updateLayout(BOOL force_resize)
 		if (mOrientation == HORIZONTAL)
 		{
 			// enforce minimize size constraint by default
-			if (panelp->getRect().getWidth() < (*panel_it)->mMinDim)
+			if (panelp->getRect().getWidth() < (*panel_it)->getRelevantMinDim())
 			{
-				panelp->reshape((*panel_it)->mMinDim, panelp->getRect().getHeight());
+				panelp->reshape((*panel_it)->getRelevantMinDim(), panelp->getRect().getHeight());
 			}
         	total_width += llround(panelp->getRect().getWidth() * (*panel_it)->getCollapseFactor(mOrientation));
         	// want n-1 panel gaps for n panels
@@ -380,9 +389,9 @@ void LLLayoutStack::updateLayout(BOOL force_resize)
 		else //VERTICAL
 		{
 			// enforce minimize size constraint by default
-			if (panelp->getRect().getHeight() < (*panel_it)->mMinDim)
+			if (panelp->getRect().getHeight() < (*panel_it)->getRelevantMinDim())
 			{
-				panelp->reshape(panelp->getRect().getWidth(), (*panel_it)->mMinDim);
+				panelp->reshape(panelp->getRect().getWidth(), (*panel_it)->getRelevantMinDim());
 			}
 			total_height += llround(panelp->getRect().getHeight() * (*panel_it)->getCollapseFactor(mOrientation));
 			if (panel_it != mPanels.begin())
@@ -409,28 +418,20 @@ void LLLayoutStack::updateLayout(BOOL force_resize)
 			|| (!(*panel_it)->mAutoResize 
 				&& !force_resize))
 		{
-			if (mOrientation == HORIZONTAL)
-			{
-				shrink_headroom_total += (*panel_it)->getRect().getWidth() - (*panel_it)->mMinDim;
-			}
-			else //VERTICAL
-			{
-				shrink_headroom_total += (*panel_it)->getRect().getHeight() - (*panel_it)->mMinDim;
-			}
+			S32 relevant_dimension = (mOrientation == HORIZONTAL) ? (*panel_it)->getRect().getWidth() : (*panel_it)->getRect().getHeight();
+			F32 relevant_min = ((*panel_it)->mCollapsed ? (*panel_it)->getRelevantMinDim() : (*panel_it)->mExpandedMinDim);
+			
+			shrink_headroom_total += relevant_dimension - relevant_min;
 		}
 		else
 		{
 			num_resizable_panels++;
-			if (mOrientation == HORIZONTAL)
-			{
-				shrink_headroom_available += (*panel_it)->getRect().getWidth() - (*panel_it)->mMinDim;
-				shrink_headroom_total += (*panel_it)->getRect().getWidth() - (*panel_it)->mMinDim;
-			}
-			else //VERTICAL
-			{
-				shrink_headroom_available += (*panel_it)->getRect().getHeight() - (*panel_it)->mMinDim;
-				shrink_headroom_total += (*panel_it)->getRect().getHeight() - (*panel_it)->mMinDim;
-			}
+
+			S32 relevant_dimension = (mOrientation == HORIZONTAL) ? (*panel_it)->getRect().getWidth() : (*panel_it)->getRect().getHeight();
+			F32 relevant_min = ((*panel_it)->mCollapsed ? (*panel_it)->getRelevantMinDim() : (*panel_it)->mExpandedMinDim);
+			
+			shrink_headroom_available += relevant_dimension - relevant_min;
+			shrink_headroom_total += relevant_dimension - relevant_min;
 		}
 	}
 
@@ -452,27 +453,28 @@ void LLLayoutStack::updateLayout(BOOL force_resize)
 
 	for (panel_it = mPanels.begin(); panel_it != mPanels.end(); ++panel_it)
 	{
-		LLPanel* panelp = (*panel_it);
+		LLLayoutPanel* panelp = (*panel_it);
 
 		S32 cur_width = panelp->getRect().getWidth();
 		S32 cur_height = panelp->getRect().getHeight();
 		S32 new_width = cur_width;
-		S32 new_height = cur_height; 
+		S32 new_height = cur_height;
+		S32 relevant_min = (S32) panelp->getRelevantMinDim();
 
 		if (mOrientation == HORIZONTAL)
 		{
-			new_width = llmax((*panel_it)->mMinDim, new_width);
+			new_width = llmax(relevant_min, new_width);
 		}
 		else
 		{
-			new_height = llmax((*panel_it)->mMinDim, new_height);
+			new_height = llmax(relevant_min, new_height);
 		}
 		S32 delta_size = 0;
 
 		// if panel can automatically resize (not animating, and resize flag set)...
-		if ((*panel_it)->getCollapseFactor(mOrientation) == 1.f 
-			&& (force_resize || (*panel_it)->mAutoResize) 
-			&& !(*panel_it)->mResizeBar->hasMouseCapture()) 
+		if (panelp->getCollapseFactor(mOrientation) == 1.f 
+			&& (force_resize || panelp->mAutoResize) 
+			&& !panelp->mResizeBar->hasMouseCapture()) 
 		{
 			if (mOrientation == HORIZONTAL)
 			{
@@ -481,8 +483,8 @@ void LLLayoutStack::updateLayout(BOOL force_resize)
 				{
 					// shrink proportionally to amount over minimum
 					// so we can do this in one pass
-					delta_size = (shrink_headroom_available > 0) ? llround((F32)pixels_to_distribute * ((F32)(cur_width - (*panel_it)->mMinDim) / (F32)shrink_headroom_available)) : 0;
-					shrink_headroom_available -= (cur_width - (*panel_it)->mMinDim);
+					delta_size = (shrink_headroom_available > 0) ? llround((F32)pixels_to_distribute * ((F32)(cur_width - panelp->getRelevantMinDim()) / (F32)shrink_headroom_available)) : 0;
+					shrink_headroom_available -= (cur_width - relevant_min);
 				}
 				else
 				{
@@ -491,7 +493,7 @@ void LLLayoutStack::updateLayout(BOOL force_resize)
 					num_resizable_panels--;
 				}
 				pixels_to_distribute -= delta_size;
-				new_width = llmax((*panel_it)->mMinDim, cur_width + delta_size);
+				new_width = llmax(relevant_min, cur_width + delta_size);
 			}
 			else
 			{
@@ -504,8 +506,8 @@ void LLLayoutStack::updateLayout(BOOL force_resize)
 				{
 					// shrink proportionally to amount over minimum
 					// so we can do this in one pass
-					delta_size = (shrink_headroom_available > 0) ? llround((F32)pixels_to_distribute * ((F32)(cur_height - (*panel_it)->mMinDim) / (F32)shrink_headroom_available)) : 0;
-					shrink_headroom_available -= (cur_height - (*panel_it)->mMinDim);
+					delta_size = (shrink_headroom_available > 0) ? llround((F32)pixels_to_distribute * ((F32)(cur_height - relevant_min) / (F32)shrink_headroom_available)) : 0;
+					shrink_headroom_available -= (cur_height - relevant_min);
 				}
 				else
 				{
@@ -513,7 +515,7 @@ void LLLayoutStack::updateLayout(BOOL force_resize)
 					num_resizable_panels--;
 				}
 				pixels_to_distribute -= delta_size;
-				new_height = llmax((*panel_it)->mMinDim, cur_height + delta_size);
+				new_height = llmax(relevant_min, cur_height + delta_size);
 			}
 			else
 			{
@@ -566,19 +568,20 @@ void LLLayoutStack::updateLayout(BOOL force_resize)
 	LLLayoutPanel* last_resizeable_panel = NULL;
 	for (panel_it = mPanels.begin(); panel_it != mPanels.end(); ++panel_it)
 	{
-		LLPanel* panelp = (*panel_it);
+		LLLayoutPanel* panelp = (*panel_it);
+		F32 relevant_min = panelp->getRelevantMinDim();
 
 		if (mOrientation == HORIZONTAL)
 		{
 			(*panel_it)->mResizeBar->setResizeLimits(
-				(*panel_it)->mMinDim, 
-				(*panel_it)->mMinDim + shrink_headroom_total);
+				relevant_min, 
+				relevant_min + shrink_headroom_total);
 		}
 		else //VERTICAL
 		{
 			(*panel_it)->mResizeBar->setResizeLimits(
-				(*panel_it)->mMinDim, 
-				(*panel_it)->mMinDim + shrink_headroom_total);
+				relevant_min, 
+				relevant_min + shrink_headroom_total);
 		}
 
 		// toggle resize bars based on panel visibility, resizability, etc
@@ -658,7 +661,7 @@ void LLLayoutStack::calcMinExtents()
 	{
 		if (mOrientation == HORIZONTAL)
 		{
-            mMinWidth += (*panel_it)->mMinDim;
+            mMinWidth += (*panel_it)->getRelevantMinDim();
 			if (panel_it != mPanels.begin())
 			{
 				mMinWidth += mPanelSpacing;
@@ -666,7 +669,7 @@ void LLLayoutStack::calcMinExtents()
 		}
 		else //VERTICAL
 		{
-			mMinHeight += (*panel_it)->mMinDim;
+			mMinHeight += (*panel_it)->getRelevantMinDim();
 			if (panel_it != mPanels.begin())
 			{
 				mMinHeight += mPanelSpacing;
diff --git a/indra/llui/lllayoutstack.h b/indra/llui/lllayoutstack.h
index 2fc2cf3eb4..d8ef0aeaca 100644
--- a/indra/llui/lllayoutstack.h
+++ b/indra/llui/lllayoutstack.h
@@ -30,10 +30,10 @@
 
 #include "llpanel.h"
 
-class LLPanel;
 
 class LLLayoutPanel;
 
+
 class LLLayoutStack : public LLView, public LLInstanceTracker<LLLayoutStack>
 {
 public:
@@ -149,6 +149,7 @@ private:
 	F32 mCloseTimeConstant;
 }; // end class LLLayoutStack
 
+
 class LLLayoutPanel : public LLPanel
 {
 friend class LLLayoutStack;
@@ -156,13 +157,15 @@ friend class LLUICtrlFactory;
 public:
 	struct Params : public LLInitParam::Block<Params, LLPanel::Params>
 	{
-		Optional<S32>			min_dim,
+		Optional<S32>			expanded_min_dim,
+								min_dim,
 								max_dim;
 		Optional<bool>			user_resize,
 								auto_resize;
 
 		Params()
-		:	min_dim("min_dim", 0),
+		:	expanded_min_dim("expanded_min_dim", 0),
+			min_dim("min_dim", 0),
 			max_dim("max_dim", 0),
 			user_resize("user_resize", true),
 			auto_resize("auto_resize", true)
@@ -179,17 +182,34 @@ public:
 	void initFromParams(const Params& p);
 
 	S32 getMinDim() const { return mMinDim; }
-	S32 getMaxDim() const { return mMaxDim; }
+	void setMinDim(S32 value) { mMinDim = value; if (!mExpandedMinDimSpecified) mExpandedMinDim = value; }
 
-	void setMinDim(S32 value) { mMinDim = value; }
+	S32 getMaxDim() const { return mMaxDim; }
 	void setMaxDim(S32 value) { mMaxDim = value; }
 
-protected:
-	LLLayoutPanel(const Params& p)	;
+	S32 getExpandedMinDim() const { return mExpandedMinDim; }
+	void setExpandedMinDim(S32 value) { mExpandedMinDim = value; mExpandedMinDimSpecified = true; }
+	
+	S32 getRelevantMinDim() const
+	{
+		S32 min_dim = mMinDim;
+		
+		if (!mCollapsed)
+		{
+			min_dim = mExpandedMinDim;
+		}
+		
+		return min_dim;
+	}
 
+protected:
+	LLLayoutPanel(const Params& p);
 	
 	F32 getCollapseFactor(LLLayoutStack::ELayoutOrientation orientation);
 
+	bool mExpandedMinDimSpecified;
+	S32 mExpandedMinDim;
+	
 	S32 mMinDim;
 	S32 mMaxDim;
 	BOOL mAutoResize;