Add resizing state flag to Splitter items.

New iterator for Splitter items.
Use std::function instead of templates for type safety.

src/modules/partition/gui/PartitionSplitterWidget.cpp

@@ -128,9 +128,11 @@ PartitionSplitterWidget::setSplitPartition( const QString& path,
         for ( int i = 0; i < m_items.count(); ++i )
         {
             if ( m_items[ i ].itemPath == m_itemToResize.itemPath &&
+                 m_items[ i ].status == PartitionSplitterItem::Resizing &&
                  i + 1 < m_items.count() )
             {
                 m_items[ i ].size = m_items[ i ].size + m_itemToResizeNext.size;
+                m_items[ i ].status = PartitionSplitterItem::Normal;
                 m_items.removeAt( i + 1 );
                 m_itemToResizeNext = PartitionSplitterItem::null();
                 break;
@@ -144,6 +146,7 @@ PartitionSplitterWidget::setSplitPartition( const QString& path,
                     {
                         m_items[ i ].children[ j ].size =
                                 m_items[ i ].children[ j ].size + m_itemToResizeNext.size;
+                        m_items[ i ].children[ j ].status = PartitionSplitterItem::Normal;
                         m_items[ i ].children.removeAt( j + 1 );
                         m_itemToResizeNext = PartitionSplitterItem::null();
                         break;
@@ -161,7 +164,12 @@ PartitionSplitterWidget::setSplitPartition( const QString& path,
     PartitionSplitterItem itemToResize = _findItem( m_items,
         [ path ]( PartitionSplitterItem& item ) -> bool
     {
-        return path == item.itemPath;
+        if ( path == item.itemPath )
+        {
+            item.status = PartitionSplitterItem::Resizing;
+            return true;
+        }
+        return false;
     } );
 
     if ( itemToResize.isNull() )
@@ -176,6 +184,17 @@ PartitionSplitterWidget::setSplitPartition( const QString& path,
 
     qint64 newSize = m_itemToResize.size - preferredSize;
     m_itemToResize.size = preferredSize;
+    int opCount = _eachItem( m_items,
+               [ preferredSize ]( PartitionSplitterItem& item ) -> bool
+    {
+        if ( item.status == PartitionSplitterItem::Resizing )
+        {
+            item.size = preferredSize;
+            return true;
+        }
+        return false;
+    } );
+    cDebug() << "each splitter item opcount:" << opCount;
     m_itemMinSize = minSize;
     m_itemMaxSize = maxSize;
     m_itemPrefSize = preferredSize;
@@ -185,7 +204,12 @@ PartitionSplitterWidget::setSplitPartition( const QString& path,
         if ( m_items[ i ].itemPath == itemToResize.itemPath )
         {
             m_items.insert( i+1,
-                            { "", QColor( "#c0392b" ), false, newSize, {} } );
+                            { "",
+                              QColor( "#c0392b" ),
+                              false,
+                              newSize,
+                              PartitionSplitterItem::ResizingNext,
+                              {} } );
             m_itemToResizeNext = m_items[ i+1 ];
             break;
         }
@@ -196,7 +220,12 @@ PartitionSplitterWidget::setSplitPartition( const QString& path,
                 if ( m_items[ i ].children[ j ].itemPath == itemToResize.itemPath )
                 {
                     m_items[ i ].children.insert( j+1,
-                                                  { "", QColor( "#c0392b" ), false, newSize, {} } );
+                                                  { "",
+                                                    QColor( "#c0392b" ),
+                                                    false,
+                                                    newSize,
+                                                    PartitionSplitterItem::ResizingNext,
+                                                    {} } );
                     m_itemToResizeNext = m_items[ i ].children[ j+1 ];
                     break;
                 }
@@ -212,7 +241,7 @@ PartitionSplitterWidget::setSplitPartition( const QString& path,
 
     cDebug() << "Items updated. Status:";
     foreach ( const PartitionSplitterItem& item, m_items )
-        cDebug() << "item" << item.itemPath << "size" << item.size;
+        cDebug() << "item" << item.itemPath << "size" << item.size << "status:" << item.status;
 
     cDebug() << "m_itemToResize:    " << !m_itemToResize.isNull() << m_itemToResize.itemPath;
     cDebug() << "m_itemToResizeNext:" << !m_itemToResizeNext.isNull() << m_itemToResizeNext.itemPath;
@@ -331,6 +360,21 @@ PartitionSplitterWidget::mouseMoveEvent( QMouseEvent* event )
 
         m_itemToResize.size = qRound64( span * percent );
         m_itemToResizeNext.size -= m_itemToResize.size - oldsize;
+        _eachItem( m_items,
+                   [ this ]( PartitionSplitterItem& item ) -> bool
+        {
+            if ( item.status == PartitionSplitterItem::Resizing )
+            {
+                item.size = m_itemToResize.size;
+                return true;
+            }
+            else if ( item.status == PartitionSplitterItem::ResizingNext )
+            {
+                item.size = m_itemToResizeNext.size;
+                return true;
+            }
+            return false;
+        } );
 
         repaint();
 
@@ -503,10 +547,9 @@ PartitionSplitterWidget::drawPartitions( QPainter* painter,
 }
 
 
-template < typename F >
 PartitionSplitterItem
 PartitionSplitterWidget::_findItem( QVector< PartitionSplitterItem >& items,
-                                    F condition )
+                                    std::function< bool ( PartitionSplitterItem& ) > condition ) const
 {
     for ( auto it = items.begin(); it != items.end(); ++it)
     {
@@ -521,6 +564,22 @@ PartitionSplitterWidget::_findItem( QVector< PartitionSplitterItem >& items,
 }
 
 
+int
+PartitionSplitterWidget::_eachItem( QVector< PartitionSplitterItem >& items,
+                                    std::function< bool ( PartitionSplitterItem& ) > operation ) const
+{
+    int opCount = 0;
+    for ( auto it = items.begin(); it != items.end(); ++it)
+    {
+        if ( operation( *it ) )
+            opCount++;
+
+        opCount += _eachItem( it->children, operation );
+    }
+    return opCount;
+}
+
+
 QPair< QVector< PartitionSplitterItem >, qreal >
 PartitionSplitterWidget::computeItemsVector( const QVector< PartitionSplitterItem >& originalItems ) const
 {

src/modules/partition/gui/PartitionSplitterWidget.h

@@ -21,18 +21,28 @@
 
 #include <QWidget>
 
+#include <functional>
+
 class Device;
 
 struct PartitionSplitterItem
 {
+    enum Status
+    {
+        Normal = 0,
+        Resizing,
+        ResizingNext
+    };
+
     QString itemPath;
     QColor color;
     bool isFreeSpace;
     qint64 size;
+    Status status;
 
     QVector< PartitionSplitterItem > children;
 
-    static PartitionSplitterItem null() { return { QString(), QColor(), false, 0 }; }
+    static PartitionSplitterItem null() { return { QString(), QColor(), false, 0, Normal }; }
 
     bool isNull() const { return itemPath.isEmpty() && size == 0; }
     operator bool() const { return !isNull(); }
@@ -79,8 +89,11 @@ private:
                            const QRect& rect_,
                            int x );
 
-    template < typename F >
+    PartitionSplitterItem _findItem( QVector< PartitionSplitterItem >& items,
-    PartitionSplitterItem _findItem( QVector< PartitionSplitterItem >& items, F condition );
+                                     std::function< bool ( PartitionSplitterItem& ) > condition ) const;
+
+    int _eachItem( QVector< PartitionSplitterItem >& items,
+                   std::function< bool ( PartitionSplitterItem& ) > operation ) const;
 
     QPair< QVector< PartitionSplitterItem >, qreal >
     computeItemsVector( const QVector< PartitionSplitterItem >& originalItems ) const;