focusIndicator around the current row

src/controls/QskListView.cpp

@@ -7,6 +7,7 @@
 #include "QskAspect.h"
 #include "QskColorFilter.h"
 #include "QskEvent.h"
+#include "QskSkinlet.h"
 
 #include <qguiapplication.h>
 #include <qstylehints.h>
@@ -24,20 +25,26 @@ class QskListView::PrivateData
     PrivateData()
         : preferredWidthFromColumns( false )
         , selectionMode( QskListView::SingleSelection )
-        , selectedRow( -1 )
     {
     }
 
+    /*
+        Currently we only support single selection. We can't navigate
+        the current item ( = focus ) without changing the selection.
+        So for the moment the selected row is always the currentRow.
+     */
+
     bool preferredWidthFromColumns : 1;
     SelectionMode selectionMode : 4;
 
-    int selectedRow;
+    int selectedRow = -1;
 };
 
 QskListView::QskListView( QQuickItem* parent )
     : QskScrollView( parent )
     , m_data( new PrivateData() )
 {
+    connect( this, &QskScrollView::scrollPosChanged, &QskControl::focusIndicatorRectChanged );
 }
 
 QskListView::~QskListView()
@@ -123,6 +130,7 @@ void QskListView::setSelectedRow( int row )
     {
         m_data->selectedRow = row;
         Q_EMIT selectedRowChanged( row );
+        Q_EMIT focusIndicatorRectChanged();
 
         update();
     }
@@ -159,6 +167,19 @@ QskColorFilter QskListView::graphicFilterAt( int row, int col ) const
     return QskColorFilter();
 }
 
+QRectF QskListView::focusIndicatorRect() const
+{
+    if( m_data->selectedRow >= 0 )
+    {
+        const auto rect = effectiveSkinlet()->sampleRect(
+            this, contentsRect(), Cell, m_data->selectedRow );
+
+        return rect.translated( -scrollPos() );
+    }
+
+    return Inherited::focusIndicatorRect();
+}
+
 void QskListView::keyPressEvent( QKeyEvent* event )
 {
     if ( m_data->selectionMode == NoSelection )
@@ -206,8 +227,19 @@ void QskListView::keyPressEvent( QKeyEvent* event )
         }
         default:
         {
-            Inherited::keyPressEvent( event );
-            return;
+            if ( const int steps = qskFocusChainIncrement( event ) )
+            {
+                row += steps;
+
+                if( row < 0 )
+                {
+                    row += rowCount();
+                }
+                else if( row >= rowCount() )
+                {
+                    row %= rowCount();
+                }
+            }
         }
     }
 

src/controls/QskListView.h

@@ -75,6 +75,8 @@ class QSK_EXPORT QskListView : public QskScrollView
     virtual QskColorFilter graphicFilterAt( int row, int col ) const;
 #endif
 
+    QRectF focusIndicatorRect() const override;
+
   public Q_SLOTS:
     void setSelectedRow( int row );
 

src/controls/QskListViewSkinlet.cpp

@@ -127,8 +127,6 @@ void QskListViewSkinlet::updateBackgroundNodes(
         rowMax = listView->rowCount() - 1;
 
     const int rowSelected = listView->selectedRow();
-    const double x0 = viewRect.left() + scrolledPos.x();
-    const double y0 = viewRect.top();
 
     auto rowNode = backgroundNode->firstChild();
 
@@ -138,8 +136,7 @@ void QskListViewSkinlet::updateBackgroundNodes(
         {
             if ( row % 2 )
             {
-                const QRectF rect( x0, y0 + row * cellHeight,
-                    viewRect.width(), cellHeight );
+                const auto rect = sampleRect( listView, listView->contentsRect(), Q::Cell, row );
 
                 auto newNode = updateBoxNode( listView, rowNode, rect, Q::Cell );
                 if ( newNode )
@@ -158,8 +155,7 @@ void QskListViewSkinlet::updateBackgroundNodes(
         QskSkinStateChanger stateChanger( listView );
         stateChanger.setStates( listView->skinStates() | QskListView::Selected );
 
-        const QRectF rect( x0, y0 + rowSelected * cellHeight,
-            viewRect.width(), cellHeight );
+        const auto rect = sampleRect( listView, listView->contentsRect(), Q::Cell, rowSelected );
         
         rowNode = updateBoxNode( listView, rowNode, rect, Q::Cell );
         if ( rowNode && rowNode->parent() != backgroundNode )
@@ -490,4 +486,26 @@ QSizeF QskListViewSkinlet::sizeHint( const QskSkinnable* skinnable,
     return QSizeF( w, -1.0 );
 }
 
+QRectF QskListViewSkinlet::sampleRect( const QskSkinnable* skinnable,
+    const QRectF& contentsRect, QskAspect::Subcontrol subControl, int index ) const
+{
+    using Q = QskListView;
+    const auto listView = static_cast< const QskListView* >( skinnable );
+
+    if ( subControl == Q::Cell )
+    {
+        const auto cellHeight = listView->rowHeight();
+        const auto viewRect = listView->viewContentsRect();
+        const auto scrolledPos = listView->scrollPos();
+
+        const double x0 = viewRect.left() + scrolledPos.x();
+        const double y0 = viewRect.top();
+
+        const QRectF rect( x0, y0 + index * cellHeight, viewRect.width(), cellHeight );
+        return rect;
+    }
+
+    return Inherited::sampleRect( skinnable, contentsRect, subControl, index );
+}
+
 #include "moc_QskListViewSkinlet.cpp"

src/controls/QskListViewSkinlet.h

@@ -37,6 +37,9 @@ class QSK_EXPORT QskListViewSkinlet : public QskScrollViewSkinlet
     QSizeF sizeHint( const QskSkinnable*,
         Qt::SizeHint, const QSizeF& ) const override;
 
+    QRectF sampleRect( const QskSkinnable*,
+        const QRectF&, QskAspect::Subcontrol, int index ) const override;
+
   protected:
     QSGNode* updateContentsNode(
         const QskScrollView*, QSGNode* ) const override;