--Bug Fixes

-Fix strange spurious crash in library tab when switching between SP and DP.
 -Compensate for severe Qt bug where dragging and dropping disjoint items in the Library tree would resort the dropped items in special situations.
 -Move Info.plist to Data folder.
 -Ensure RTTI is included in build.
 -Add darker versions of .png icons.

Builds/MSVC/VS2015/Ember.vcxproj

@@ -70,6 +70,7 @@
       <MultiProcessorCompilation>true</MultiProcessorCompilation>
       <MinimalRebuild>false</MinimalRebuild>
       <InlineFunctionExpansion>AnySuitable</InlineFunctionExpansion>
+      <RuntimeTypeInfo>true</RuntimeTypeInfo>
     </ClCompile>
     <Link>
       <SubSystem>Windows</SubSystem>
@@ -99,6 +100,7 @@
       <FloatingPointExceptions>false</FloatingPointExceptions>
       <BufferSecurityCheck>false</BufferSecurityCheck>
       <MinimalRebuild>false</MinimalRebuild>
+      <RuntimeTypeInfo>true</RuntimeTypeInfo>
     </ClCompile>
     <Link>
       <SubSystem>Windows</SubSystem>

Builds/MSVC/VS2015/EmberAnimate.vcxproj

@@ -67,6 +67,7 @@
       <StringPooling>true</StringPooling>
       <FloatingPointExceptions>false</FloatingPointExceptions>
       <InlineFunctionExpansion>AnySuitable</InlineFunctionExpansion>
+      <RuntimeTypeInfo>true</RuntimeTypeInfo>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
@@ -97,6 +98,7 @@ xcopy /F /Y /R /D "$(SolutionDir)..\..\..\Data\flam3-palettes.xml" "$(OutDir)"
       <StringPooling>true</StringPooling>
       <FloatingPointExceptions>false</FloatingPointExceptions>
       <BufferSecurityCheck>false</BufferSecurityCheck>
+      <RuntimeTypeInfo>true</RuntimeTypeInfo>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>

Builds/MSVC/VS2015/EmberCL.vcxproj

@@ -68,6 +68,7 @@
       <StringPooling>true</StringPooling>
       <FloatingPointExceptions>false</FloatingPointExceptions>
       <InlineFunctionExpansion>AnySuitable</InlineFunctionExpansion>
+      <RuntimeTypeInfo>true</RuntimeTypeInfo>
     </ClCompile>
     <Link>
       <SubSystem>Windows</SubSystem>
@@ -96,6 +97,7 @@
       <FloatingPointExceptions>false</FloatingPointExceptions>
       <StringPooling>true</StringPooling>
       <BufferSecurityCheck>false</BufferSecurityCheck>
+      <RuntimeTypeInfo>true</RuntimeTypeInfo>
     </ClCompile>
     <Link>
       <SubSystem>Windows</SubSystem>

Builds/MSVC/VS2015/EmberGenome.vcxproj

@@ -67,6 +67,7 @@
       <StringPooling>true</StringPooling>
       <FloatingPointExceptions>false</FloatingPointExceptions>
       <InlineFunctionExpansion>AnySuitable</InlineFunctionExpansion>
+      <RuntimeTypeInfo>true</RuntimeTypeInfo>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
@@ -97,6 +98,7 @@ xcopy /F /Y /R /D "$(SolutionDir)..\..\..\Data\flam3-palettes.xml" "$(OutDir)"
       <StringPooling>true</StringPooling>
       <FloatingPointExceptions>false</FloatingPointExceptions>
       <BufferSecurityCheck>false</BufferSecurityCheck>
+      <RuntimeTypeInfo>true</RuntimeTypeInfo>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>

Builds/MSVC/VS2015/EmberRender.vcxproj

@@ -67,6 +67,7 @@
       <StringPooling>true</StringPooling>
       <FloatingPointExceptions>false</FloatingPointExceptions>
       <InlineFunctionExpansion>AnySuitable</InlineFunctionExpansion>
+      <RuntimeTypeInfo>true</RuntimeTypeInfo>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
@@ -98,6 +99,7 @@ xcopy /F /Y /R /D "$(SolutionDir)..\..\..\Data\flam3-palettes.xml" "$(OutDir)"
       <FloatingPointExceptions>false</FloatingPointExceptions>
       <StringPooling>true</StringPooling>
       <BufferSecurityCheck>false</BufferSecurityCheck>
+      <RuntimeTypeInfo>true</RuntimeTypeInfo>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>

Builds/MSVC/VS2015/EmberTester.vcxproj

@@ -67,6 +67,7 @@
       <StringPooling>true</StringPooling>
       <FloatingPointExceptions>false</FloatingPointExceptions>
       <InlineFunctionExpansion>AnySuitable</InlineFunctionExpansion>
+      <RuntimeTypeInfo>true</RuntimeTypeInfo>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
@@ -97,6 +98,7 @@ xcopy /F /Y /R /D "$(SolutionDir)..\..\..\Data\flam3-palettes.xml" "$(OutDir)"
       <StringPooling>true</StringPooling>
       <FloatingPointExceptions>false</FloatingPointExceptions>
       <BufferSecurityCheck>false</BufferSecurityCheck>
+      <RuntimeTypeInfo>true</RuntimeTypeInfo>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>

Builds/MSVC/VS2015/Fractorium.vcxproj

@@ -49,10 +49,10 @@
     <IntDir Condition="'$(Configuration)|$(Platform)'=='Release|x64'">$(SolutionDir)Obj\$(TargetName)\$(Platform)\$(Configuration)\</IntDir>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
-    <PostBuildEventUseInBuild>false</PostBuildEventUseInBuild>
+    <PostBuildEventUseInBuild>true</PostBuildEventUseInBuild>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
-    <PostBuildEventUseInBuild>false</PostBuildEventUseInBuild>
+    <PostBuildEventUseInBuild>true</PostBuildEventUseInBuild>
   </PropertyGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
     <ClCompile>
@@ -74,6 +74,7 @@
       <FloatingPointExceptions>false</FloatingPointExceptions>
       <WarningLevel>Level3</WarningLevel>
       <InlineFunctionExpansion>AnySuitable</InlineFunctionExpansion>
+      <RuntimeTypeInfo>true</RuntimeTypeInfo>
     </ClCompile>
     <Link>
       <SubSystem>Windows</SubSystem>
@@ -114,6 +115,7 @@ xcopy /F /Y /R /D "$(QTDIR)\plugins\platforms\qwindowsd.dll" "$(OutDir)\platform
       <AdditionalOptions>/bigobj -Zm150 %(AdditionalOptions)</AdditionalOptions>
       <BufferSecurityCheck>false</BufferSecurityCheck>
       <WarningLevel>Level3</WarningLevel>
+      <RuntimeTypeInfo>true</RuntimeTypeInfo>
     </ClCompile>
     <Link>
       <SubSystem>Windows</SubSystem>

Source/Fractorium/EmberTreeWidgetItem.h

@@ -34,6 +34,11 @@ public:
 	{
 	}
 
+	//~EmberTreeWidgetItemBase()
+	//{
+	//	qDebug() << "~EmberTreeWidgetItemBase()";
+	//}
+
 	/// <summary>
 	/// Set the preview image for the tree widget item.
 	/// </summary>

Source/Fractorium/FractoriumLibrary.cpp

@@ -283,7 +283,11 @@ void FractoriumEmberController<T>::EmberTreeItemChanged(QTreeWidgetItem* item, i
 	}
 }
 
-void Fractorium::OnEmberTreeItemChanged(QTreeWidgetItem* item, int col) { m_Controller->EmberTreeItemChanged(item, col); }
+void Fractorium::OnEmberTreeItemChanged(QTreeWidgetItem* item, int col)
+{
+	if (ui.LibraryTree->topLevelItemCount())//This can sometimes be spurriously called even when the tree is empty.
+		m_Controller->EmberTreeItemChanged(item, col);
+}
 
 /// <summary>
 /// Set the current ember to the selected item.
@@ -301,12 +305,17 @@ void FractoriumEmberController<T>::EmberTreeItemDoubleClicked(QTreeWidgetItem* i
 		SetEmber(m_Fractorium->ui.LibraryTree->currentIndex().row(), false);
 }
 
-void Fractorium::OnEmberTreeItemDoubleClicked(QTreeWidgetItem* item, int col) { m_Controller->EmberTreeItemDoubleClicked(item, col); }
+void Fractorium::OnEmberTreeItemDoubleClicked(QTreeWidgetItem* item, int col)
+{
+	if (ui.LibraryTree->topLevelItemCount())//This can sometimes be spurriously called even when the tree is empty.
+		m_Controller->EmberTreeItemDoubleClicked(item, col);
+}
 
 /// <summary>
-/// Move a library item at one index to the next index.
+/// Move a possibly disjoint selection of library items from their indices,
+/// to another index.
 /// </summary>
-/// <param name="startRow">The index of the source item to move</param>
+/// <param name="items">The selected list of items to move</param>
 /// <param name="destRow">The destination index to move the item to</param>
 template <typename T>
 void FractoriumEmberController<T>::MoveLibraryItems(const QModelIndexList& items, int destRow)
@@ -315,17 +324,16 @@ void FractoriumEmberController<T>::MoveLibraryItems(const QModelIndexList& items
 	auto startRow = items[0].row();
 	auto tree = m_Fractorium->ui.LibraryTree;
 	auto top = tree->topLevelItem(0);
-	list<QString> names;
+	list<string> names;
 
 	for (auto& item : items)
 		if (auto temp = m_EmberFile.Get(item.row()))
-			names.push_back(QString::fromStdString(temp->m_Name));
+			names.push_back(temp->m_Name);
 
 	auto b = m_EmberFile.m_Embers.begin();
 	auto result = Gather(b, m_EmberFile.m_Embers.end(), Advance(b, destRow), [&](const Ember<T>& ember)
 	{
-		auto qname = QString::fromStdString(ember.m_Name);
-		auto position = std::find(names.begin(), names.end(), qname);
+		auto position = std::find(names.begin(), names.end(), ember.m_Name);
 
 		if (position != names.end())
 		{
@@ -335,7 +343,9 @@ void FractoriumEmberController<T>::MoveLibraryItems(const QModelIndexList& items
 
 		return false;
 	});
+	tree->update();
 	SyncLibrary(eLibraryUpdate(eLibraryUpdate::INDEX | eLibraryUpdate::POINTER));
+	//SyncLibrary(eLibraryUpdate(eLibraryUpdate::INDEX | eLibraryUpdate::POINTER | eLibraryUpdate::NAME));
 }
 
 /// <summary>
@@ -496,7 +506,11 @@ void FractoriumEmberController<T>::SequenceTreeItemChanged(QTreeWidgetItem* item
 	}
 }
 
-void Fractorium::OnSequenceTreeItemChanged(QTreeWidgetItem* item, int col) { m_Controller->SequenceTreeItemChanged(item, col); }
+void Fractorium::OnSequenceTreeItemChanged(QTreeWidgetItem* item, int col)
+{
+	if (ui.SequenceTree->topLevelItemCount())
+		m_Controller->SequenceTreeItemChanged(item, col);
+}
 
 /// <summary>
 /// Wrapper around calling RenderPreviews with the appropriate values passed in for the previews in the sequence tree.

Source/Fractorium/FractoriumRender.cpp

@@ -683,6 +683,7 @@ bool Fractorium::CreateControllerFromOptions()
 		Palette<float> tempPalette;
 #endif
 		QModelIndex index = ui.LibraryTree->currentIndex();
+		ui.LibraryTree->clear();//This must be here before FillLibraryTree() is called below, else a spurious EmberTreeItemChanged event will be called on a deleted object.
 
 		//First check if a controller has already been created, and if so, save its embers and gracefully shut it down.
 		if (m_Controller.get())
@@ -716,6 +717,12 @@ bool Fractorium::CreateControllerFromOptions()
 				prev->m_Palette = tempPalette;
 
 			m_Controller->SetEmberFile(efd, true);
+			//Template specific palette table and variations tree setup in controller constructor, but
+			//must manually setup the library tree here because it's after the embers were assigned.
+			//Passing row re-selects the item that was previously selected.
+			//This will eventually call FillParamTablesAndPalette(), which in addition to filling in various fields,
+			//will apply the palette adjustments.
+			m_Controller->FillLibraryTree(index.row());
 			m_Controller->SetEmber(current, true);
 			m_Controller->LockedScale(scale);
 			//Setting these and updating the GUI overwrites the work of clearing them done in SetEmber() above.
@@ -727,12 +734,6 @@ bool Fractorium::CreateControllerFromOptions()
 			m_PaletteBlurSpin->SetValueStealth(blur);
 			m_PaletteFrequencySpin->SetValueStealth(freq);
 			m_Controller->PaletteAdjust();//Applies the adjustments to temp and saves in m_Ember.m_Palette, then fills in the palette preview widget.
-			//Template specific palette table and variations tree setup in controller constructor, but
-			//must manually setup the library tree here because it's after the embers were assigned.
-			//Passing row re-selects the item that was previously selected.
-			//This will eventually call FillParamTablesAndPalette(), which in addition to filling in various fields,
-			//will apply the palette adjustments.
-			m_Controller->FillLibraryTree(index.row());
 		}
 	}
 
@@ -773,5 +774,5 @@ bool Fractorium::ControllersOk() { return m_Controller.get() && m_Controller->GL
 template class FractoriumEmberController<float>;
 
 #ifdef DO_DOUBLE
-template class FractoriumEmberController<double>;
+	template class FractoriumEmberController<double>;
 #endif

Source/Fractorium/LibraryTreeWidget.cpp

@@ -27,14 +27,70 @@ void LibraryTreeWidget::dropEvent(QDropEvent* de)
 	}
 	else if (!items.empty())//Actually do the drop and move the item to a new location.
 	{
-		int row = droppedIndex.row();
+		// get the list of the items that are about to be dragged
+		int i, row = droppedIndex.row();
 		DropIndicatorPosition dp = dropIndicatorPosition();
+		QList<QTreeWidgetItem*> dragItems = selectedItems();
 
 		if (dp == QAbstractItemView::BelowItem)
 			row++;
 
+		auto itemat = this->itemFromIndex(droppedIndex);
+		QTreeWidget::dropEvent(de);//This internally changes the order of the items.
+
+		//Qt has a long standing major bug that rearranges the order of disjoint selections when
+		//The drop location is in between the disjoint regions.
+		//This is an attempt to correct for that bug by removing the dropped items, then re-inserting them
+		//in the order they were selected.
+		//This bug remains present as of Qt 5.8: https://bugreports.qt.io/browse/QTBUG-45320
+		if (auto top = topLevelItem(0))
+		{
+			if (itemat)
+			{
+				auto offsetitem = this->indexFromItem(itemat);
+
+				if (dp == QAbstractItemView::BelowItem)
+				{
+					auto itemrow = offsetitem.row() + 1;
+
+					for (i = 0; i < dragItems.size(); i++)
+					{
+						if (itemrow < top->childCount())
+							top->takeChild(itemrow);
+					}
+
+					for (i = 0; i < dragItems.size(); i++)
+					{
+						auto offset = i + itemrow;
+
+						if (offset <= top->childCount())
+							top->insertChild(offset, dragItems[i]);
+					}
+				}
+				else
+				{
+					auto itemrow = offsetitem.row();//Will be at least 1 if dropped above it.
+					auto offset = itemrow;
+
+					for (i = 0; i < dragItems.size(); i++)
+					{
+						offset--;
+
+						if (offset < top->childCount())
+							top->takeChild(offset);
+					}
+
+					for (i = 0; i < dragItems.size(); i++)
+					{
+						if (offset <= top->childCount())
+							top->insertChild(offset, dragItems[i]);
+
+						offset++;
+					}
+				}
+			}
+		}
+
 		QTimer::singleShot(500, [ = ]() { m_Fractorium->m_Controller->MoveLibraryItems(items, row); });//Need to fire this after this event has internally reshuffled the items.
 	}
-
-	QTreeWidget::dropEvent(de);
 }