From 34737b642ee0e4a151d4f3925eb135354567990d Mon Sep 17 00:00:00 2001
From: ana <ana@opencascade.com>
Date: Wed, 12 May 2010 12:02:00 +0000
Subject: [PATCH] Implement icons for slider preference item

---
 src/Qtx/QtxPagePrefMgr.cxx | 91 +++++++++++++++++++++++++++++++++++++-
 src/Qtx/QtxPagePrefMgr.h   | 12 ++++-
 2 files changed, 100 insertions(+), 3 deletions(-)

diff --git a/src/Qtx/QtxPagePrefMgr.cxx b/src/Qtx/QtxPagePrefMgr.cxx
index e19f581c7..98940ab20 100644
--- a/src/Qtx/QtxPagePrefMgr.cxx
+++ b/src/Qtx/QtxPagePrefMgr.cxx
@@ -2228,8 +2228,16 @@ QtxPagePrefSliderItem::QtxPagePrefSliderItem( const QString& title, QtxPreferenc
 : QtxPageNamedPrefItem( title, parent, sect, param )
 {
   setControl( mySlider = new QSlider( Qt::Horizontal ) );
+  widget()->layout()->addWidget( myLabel = new QLabel( ) );
+    
+  setMinimum( 0 );
+  setMaximum( 0 );
+  setSingleStep( 1 );
+  setPageStep( 1 );
+  
   mySlider->setTickPosition( QSlider::TicksBothSides );
-
+  
+  connect (mySlider, SIGNAL(valueChanged(int)), this, SLOT(setIcon(int)));
   updateSlider();
 }
 
@@ -2280,6 +2288,16 @@ int QtxPagePrefSliderItem::maximum() const
     return mySlider->maximum();
 }
 
+/*!
+  \brief Get the list of the icons associated with the selection widget items
+  \return list of icons
+  \sa setIcons()
+*/
+QList<QIcon> QtxPagePrefSliderItem::icons() const
+{
+  return myIcons;
+}
+
 /*!
   \brief Set slider preference item step value.
   \param step new slider single step value
@@ -2308,16 +2326,39 @@ void QtxPagePrefSliderItem::setPageStep( const int& step )
 void QtxPagePrefSliderItem::setMinimum( const int& min )
 {
   mySlider->setMinimum( min );
+  setIcon( mySlider->value() );
 }
 
 /*!
   \brief Set slider preference item maximum value.
-  \param min new slider maximum value
+  \param max new slider maximum value
   \sa maximum()
 */
 void QtxPagePrefSliderItem::setMaximum( const int& max )
 {
   mySlider->setMaximum( max );
+  setIcon( mySlider->value() );
+}
+
+/*!
+  \brief Set the list of the icons to the selection widget items
+  \param icns new list of icons
+  \sa icons()
+*/
+void QtxPagePrefSliderItem::setIcons( const QList<QIcon>& icns )
+{
+  if ( icns.isEmpty() ) 
+    return;
+  myIcons = icns;
+  
+  QSize maxsize(0, 0); 
+  for ( QList<QIcon>::const_iterator it = myIcons.begin(); it != myIcons.end(); ++it ) {
+    if ( (*it).isNull() ) continue;
+    maxsize = maxsize.expandedTo( (*it).availableSizes().first() );
+  }
+  myLabel->setFixedSize( maxsize );
+  
+  updateSlider();
 }
 
 /*!
@@ -2354,6 +2395,14 @@ QVariant QtxPagePrefSliderItem::optionValue( const QString& name ) const
     return singleStep();
   else if ( name == "page_step" )
     return pageStep();
+  else if ( name == "icons" || name == "pixmaps" )
+  {
+    QList<QVariant> lst;
+    QList<QIcon> ics = icons();
+    for ( QList<QIcon>::const_iterator it = ics.begin(); it != ics.end(); ++it )
+      lst.append( *it );
+    return lst;
+  }
   else
     return QtxPageNamedPrefItem::optionValue( name );
 }
@@ -2379,10 +2428,21 @@ void QtxPagePrefSliderItem::setOptionValue( const QString& name, const QVariant&
     else
       QtxPageNamedPrefItem::setOptionValue( name, val );
   }
+  else if ( name == "icons" || name == "pixmaps" )
+    setIcons( val );
   else
     QtxPageNamedPrefItem::setOptionValue( name, val );
 }
 
+void QtxPagePrefSliderItem::setIcon( int pos )
+{
+  int index = pos - mySlider->minimum();
+  if ( !myIcons.isEmpty() && index >= 0 && index < myIcons.size() && !myIcons[index].isNull() )
+    myLabel->setPixmap( myIcons[index].pixmap( myIcons[index].availableSizes().first() ) );
+  else
+    myLabel->clear();
+}
+
 /*!
   \brief Update slider widget.
 */
@@ -2402,6 +2462,33 @@ void QtxPagePrefSliderItem::updateSlider()
   setPageStep( ptp );
   setMinimum( min );
   setMaximum( max );
+  
+  myLabel->setVisible( !myIcons.empty() );
+  widget()->layout()->setSpacing( !myIcons.empty() ? 6 : 0 );
+}
+
+/*!
+  \brief Set the list of the icons from the resource manager.
+  \param var new icons list
+  \internal
+*/
+void  QtxPagePrefSliderItem::setIcons( const QVariant& var )
+{
+  if ( var.type() != QVariant::List )
+    return;
+
+  QList<QIcon> lst;
+  QList<QVariant> varList = var.toList();
+  for ( QList<QVariant>::const_iterator it = varList.begin(); it != varList.end(); ++it )
+  {
+    if ( (*it).canConvert<QIcon>() )
+      lst.append( (*it).value<QIcon>() );
+    else if ( (*it).canConvert<QPixmap>() )
+      lst.append( (*it).value<QPixmap>() );
+    else
+      lst.append( QIcon() );
+  }
+  setIcons( lst );
 }
 
 /*!
diff --git a/src/Qtx/QtxPagePrefMgr.h b/src/Qtx/QtxPagePrefMgr.h
index 25ec149b9..5501fdf23 100644
--- a/src/Qtx/QtxPagePrefMgr.h
+++ b/src/Qtx/QtxPagePrefMgr.h
@@ -417,8 +417,10 @@ private:
   QLineEdit*       myEditor;
 };
 
-class QTX_EXPORT QtxPagePrefSliderItem : public QtxPageNamedPrefItem
+class QTX_EXPORT QtxPagePrefSliderItem : public QObject,public QtxPageNamedPrefItem
 {
+  Q_OBJECT
+
 public:
   QtxPagePrefSliderItem( const QString&, QtxPreferenceItem* = 0,
                          const QString& = QString(), const QString& = QString() );
@@ -428,11 +430,13 @@ public:
   int              pageStep() const;
   int              minimum() const;
   int              maximum() const;
+  QList<QIcon>     icons() const; 
 
   void             setSingleStep( const int& );
   void             setPageStep( const int& );
   void             setMinimum( const int& );
   void             setMaximum( const int& );
+  void             setIcons( const QList<QIcon>& );
 
   virtual void     store();
   virtual void     retrieve();
@@ -441,11 +445,17 @@ protected:
   virtual QVariant optionValue( const QString& ) const;
   virtual void     setOptionValue( const QString&, const QVariant& );
 
+private slots:
+ void             setIcon( int );
+
 private:
   void             updateSlider();
+  void             setIcons( const QVariant& );
 
 private:
   QSlider*         mySlider;
+  QLabel*          myLabel;
+  QList<QIcon>     myIcons;
 };
 
 class QTX_EXPORT QtxPagePrefSelectItem : public QtxPageNamedPrefItem
-- 
2.39.2