From 16295296c07fe407990f7059f68fcb2dc55826e5 Mon Sep 17 00:00:00 2001
From: sbh <sbh@opencascade.com>
Date: Wed, 17 Jul 2013 13:52:58 +0000
Subject: [PATCH] New behavior TabBar of the QtxWorkstack: show close (cross)
 button on each tab

---
 src/Qtx/QtxWorkstack.cxx | 129 ++-------------------------------------
 src/Qtx/QtxWorkstack.h   |   3 +-
 2 files changed, 6 insertions(+), 126 deletions(-)

diff --git a/src/Qtx/QtxWorkstack.cxx b/src/Qtx/QtxWorkstack.cxx
index d8621f0d0..7c7911cbb 100644
--- a/src/Qtx/QtxWorkstack.cxx
+++ b/src/Qtx/QtxWorkstack.cxx
@@ -251,121 +251,6 @@ void QtxWorkstackDrag::startDrawRect()
 }
 
 
-/*
-  \class CloseButton
-  \brief Workstack area close button.
-  \internal
-*/
-class CloseButton : public QAbstractButton
-{
-public:
-  CloseButton( QWidget* );
-
-  QSize        sizeHint() const;
-  QSize        minimumSizeHint() const;
-
-  void enterEvent( QEvent* );
-  void leaveEvent( QEvent* );
-  void paintEvent( QPaintEvent* );
-};
-
-/*!
-  \brief Constructor
-  \internal
-  \param parent parent widget
-*/
-CloseButton::CloseButton( QWidget* parent )
-: QAbstractButton( parent )
-{
- setFocusPolicy( Qt::NoFocus );
-}
-
-/*!
-  \brief Get appropriate size for the button.
-  \internal
-  \return size value
-*/
-QSize CloseButton::sizeHint() const
-{
-  ensurePolished();
-  int dim = 0;
-  if( !icon().isNull() )
-  {
-    const QPixmap pm = icon().pixmap( style()->pixelMetric( QStyle::PM_SmallIconSize ),
-                                      QIcon::Normal );
-    dim = qMax( pm.width(), pm.height() );
-  }
-  return QSize( dim + 4, dim + 4 );
-}
-
-/*!
-  \brief Get minimum appropriate size for the button.
-  \internal
-  \return minimum size value
-*/
-QSize CloseButton::minimumSizeHint() const
-{
-  return sizeHint();
-}
-
-/*!
-  \brief Process mouse enter event.
-  \internal
-  \param event mouse enter event
-*/
-void CloseButton::enterEvent( QEvent *event )
-{
-  if ( isEnabled() )
-    update();
-  QAbstractButton::enterEvent( event );
-}
-
-/*!
-  \brief Process mouse leave event.
-  \internal
-  \param event mouse leave event
-*/
-void CloseButton::leaveEvent( QEvent *event )
-{
-  if( isEnabled() )
-    update();
-  QAbstractButton::leaveEvent( event );
-}
-
-/*!
-  \brief Process paint event.
-  \internal
-  \param event paint event
-*/
-void CloseButton::paintEvent( QPaintEvent* )
-{
-  QPainter p( this );
-
-  QRect r = rect();
-  QStyleOption opt;
-  opt.init( this );
-  opt.state |= QStyle::State_AutoRaise;
-  if ( isEnabled() && underMouse() && !isChecked() && !isDown() )
-    opt.state |= QStyle::State_Raised;
-  if ( isChecked() )
-    opt.state |= QStyle::State_On;
-  if ( isDown() )
-    opt.state |= QStyle::State_Sunken;
-  style()->drawPrimitive( QStyle::PE_PanelButtonTool, &opt, &p, this );
-
-  int shiftHorizontal = opt.state & QStyle::State_Sunken ? style()->pixelMetric( QStyle::PM_ButtonShiftHorizontal, &opt, this ) : 0;
-  int shiftVertical = opt.state & QStyle::State_Sunken ? style()->pixelMetric( QStyle::PM_ButtonShiftVertical, &opt, this ) : 0;
-
-  r.adjust( 2, 2, -2, -2 );
-  r.translate( shiftHorizontal, shiftVertical );
-
-  QPixmap pm = icon().pixmap( style()->pixelMetric( QStyle::PM_SmallIconSize ), isEnabled() ?
-                              underMouse() ? QIcon::Active : QIcon::Normal
-			      : QIcon::Disabled,
-                              isDown() ? QIcon::On : QIcon::Off );
-  style()->drawItemPixmap( &p, r, Qt::AlignCenter, pm );
-}
-
 /*!
   \class QtxWorkstackArea
   \internal
@@ -393,17 +278,13 @@ QtxWorkstackArea::QtxWorkstackArea( QWidget* parent )
 
   myBar = new QtxWorkstackTabBar( top );
   tl->addWidget( myBar, 1 );
-
-  CloseButton* close = new CloseButton( top );
-  close->setIcon( style()->standardIcon( QStyle::SP_TitleBarCloseButton ) );
-  myClose = close;
-  tl->addWidget( myClose );
+  myBar->setTabsClosable( true );
 
   myStack = new QStackedWidget( this );
 
   base->addWidget( myStack, 1 );
 
-  connect( myClose, SIGNAL( clicked() ), this, SLOT( onClose() ) );
+  connect( myBar, SIGNAL( tabCloseRequested( int ) ), this, SLOT( onClose( int ) ) );
   connect( myBar, SIGNAL( currentChanged( int ) ), this, SLOT( onCurrentChanged( int ) ) );
   connect( myBar, SIGNAL( dragActiveTab() ), this, SLOT( onDragActiveTab() ) );
   connect( myBar, SIGNAL( contextMenuRequested( QPoint ) ), this, SLOT( onContextMenuRequested( QPoint ) ) );
@@ -665,7 +546,7 @@ bool QtxWorkstackArea::eventFilter( QObject* o, QEvent* e )
     if ( e->type() == QEvent::FocusIn || e->type() == QEvent::MouseButtonPress )
     {
       bool ok = false;
-      while ( !ok && wid && wid != myClose )
+      while ( !ok && wid )
       {
         ok = wid == this;
         wid = wid->parentWidget();
@@ -800,9 +681,9 @@ void QtxWorkstackArea::mousePressEvent( QMouseEvent* e )
 /*!
   \brief Called when user presses "Close" button.
 */
-void QtxWorkstackArea::onClose()
+void QtxWorkstackArea::onClose( int idx )
 {
-  QWidget* wid = activeWidget();
+  QWidget* wid = widget( myBar->tabId( idx ) );
   if ( wid )
     wid->close();
 }
diff --git a/src/Qtx/QtxWorkstack.h b/src/Qtx/QtxWorkstack.h
index 7037ae655..c00401deb 100644
--- a/src/Qtx/QtxWorkstack.h
+++ b/src/Qtx/QtxWorkstack.h
@@ -214,7 +214,7 @@ public slots:
   virtual void        setVisible( bool );
 
 private slots:
-  void                onClose();
+  void                onClose( int );
   void                onCurrentChanged( int );
 
   void                onWidgetDestroyed();
@@ -272,7 +272,6 @@ private:
 
 private:
   QtxWorkstackTabBar* myBar;     //!< workarea tab bar header
-  QAbstractButton*    myClose;   //!< close button
   QStackedWidget*     myStack;   //!< widget stack
 
   QWidgetList         myList;    //!< child widgets list
-- 
2.39.2