From c6b331268096596311d266faca1dba7b5db03e76 Mon Sep 17 00:00:00 2001
From: stv <stv@opencascade.com>
Date: Thu, 24 Nov 2005 10:07:11 +0000
Subject: [PATCH] New class added: QtxLogoMgr

---
 src/Qtx/Makefile.in    |   3 +
 src/Qtx/QtxLogoMgr.cxx | 169 +++++++++++++++++++++++++++++++++++++++++
 src/Qtx/QtxLogoMgr.h   |  49 ++++++++++++
 3 files changed, 221 insertions(+)
 create mode 100644 src/Qtx/QtxLogoMgr.cxx
 create mode 100644 src/Qtx/QtxLogoMgr.h

diff --git a/src/Qtx/Makefile.in b/src/Qtx/Makefile.in
index eda7470b7..d433050d1 100755
--- a/src/Qtx/Makefile.in
+++ b/src/Qtx/Makefile.in
@@ -25,6 +25,7 @@ EXPORT_HEADERS= Qtx.h \
 		QtxListAction.h \
 		QtxListBox.h \
                 QtxListOfOperations.h \
+                QtxLogoMgr.h \
 		QtxMenuButton.h \
 		QtxMRUAction.h \
 		QtxOperations.h \
@@ -71,6 +72,7 @@ LIB_SRC= \
 	QtxListAction.cxx \
 	QtxListBox.cxx \
         QtxListOfOperations.cxx \
+        QtxLogoMgr.cxx \
 	QtxMenuButton.cxx \
 	QtxMRUAction.cxx \
 	QtxPathDialog.cxx \
@@ -107,6 +109,7 @@ LIB_MOC = \
         QtxIntSpinBox.h \
         QtxListAction.h \
         QtxListBox.h \
+        QtxLogoMgr.h \
         QtxMenuButton.h \
         QtxMRUAction.h \
         QtxPathDialog.h \
diff --git a/src/Qtx/QtxLogoMgr.cxx b/src/Qtx/QtxLogoMgr.cxx
new file mode 100644
index 000000000..f045d9c95
--- /dev/null
+++ b/src/Qtx/QtxLogoMgr.cxx
@@ -0,0 +1,169 @@
+#include "QtxLogoMgr.h"
+
+#include <qhbox.h>
+#include <qlabel.h>
+#include <qstyle.h>
+#include <qimage.h>
+#include <qbitmap.h>
+#include <qlayout.h>
+#include <qmenubar.h>
+#include <qapplication.h>
+
+QtxLogoMgr::QtxLogoMgr( QMenuBar* mb )
+: QObject( mb ),
+myMenus( mb ),
+myId( 0 )
+{
+}
+
+QtxLogoMgr::~QtxLogoMgr()
+{
+}
+
+/*!
+  Returns the menubar.
+*/
+QMenuBar* QtxLogoMgr::menuBar() const
+{
+  return myMenus;
+}
+
+/*!
+  Returns the count of the existed logos.
+*/
+int QtxLogoMgr::count() const
+{
+  return myLogos.count();
+}
+
+/*!
+  Insert new logo to the menu bar area
+*/
+void QtxLogoMgr::insert( const QString& id, const QPixmap& pix, const int index )
+{
+  if ( pix.isNull() )
+    return;
+
+  LogoInfo* inf = 0;
+
+  int idx = find( id );
+  if ( idx < 0 )
+  {
+    idx = index < (int)myLogos.count() ? index : -1;
+    if ( idx < 0 )
+      inf = &( *myLogos.append( LogoInfo() ) );
+    else
+      inf = &( *myLogos.insert( myLogos.at( idx ), LogoInfo() ) );
+  }
+  else
+    inf = &( *myLogos.at( idx ) );
+
+
+  inf->id = id;
+  inf->pix = pix;
+
+  generate();
+}
+
+/*!
+  Removes a logo
+*/
+void QtxLogoMgr::remove( const QString& id )
+{
+  int idx = find( id );
+  if ( idx < 0 )
+    return;
+
+  myLogos.remove( myLogos.at( idx ) );
+
+  generate();
+}
+
+/*!
+  Removes all logos 
+*/
+void QtxLogoMgr::clear()
+{
+  myLogos.clear();
+  generate();
+}
+
+void QtxLogoMgr::generate()
+{
+  if ( !menuBar() )
+    return;
+
+  if ( myId ) 
+    menuBar()->removeItem( myId );
+
+  myId = 0;
+
+  if ( myLogos.isEmpty() )
+    return;
+
+  class LogoBox : public QHBox
+  {
+  public:
+    LogoBox( QWidget* parent = 0, const char* name = 0, WFlags f = 0 ) : QHBox( parent, name, f ) {};
+
+    void addSpacing( int spacing )
+    {
+      QApplication::sendPostedEvents( this, QEvent::ChildInserted );
+      ((QHBoxLayout*)layout())->addSpacing( spacing );
+    }
+
+  protected:
+    void drawContents( QPainter* p )
+    {
+      if ( parentWidget()->inherits( "QMenuBar" ) )
+        style().drawControl( QStyle::CE_MenuBarEmptyArea, p, this, contentsRect(), colorGroup() );
+      else
+        QHBox::drawContents( p );
+    }
+  };
+
+  LogoBox* cnt = new LogoBox( menuBar() );
+  cnt->setSpacing( 10 );
+
+  for ( LogoList::const_iterator it = myLogos.begin(); it != myLogos.end(); ++it )
+  {
+    QPixmap pix = (*it).pix;
+    if ( !pix.mask() )
+    {
+      QImage img = pix.convertToImage();
+      QBitmap bm;
+      if ( img.hasAlphaBuffer() )
+        bm = img.createAlphaMask();
+      else
+        bm = img.createHeuristicMask();
+      pix.setMask( bm );
+    }
+
+    QLabel* logoLab = new QLabel( cnt );
+    logoLab->setPixmap( (*it).pix );
+    logoLab->setScaledContents( false );
+    logoLab->setAlignment( QLabel::AlignCenter ); 
+
+    if ( pix.mask() )
+  	  logoLab->setMask( *pix.mask() );
+  }
+
+  QApplication::sendPostedEvents( cnt, QEvent::ChildInserted );
+  cnt->addSpacing( 2 );
+
+  myId = menuBar()->insertItem( cnt );
+
+  QApplication::sendPostedEvents( menuBar()->parentWidget(), QEvent::LayoutHint );
+  QApplication::postEvent( menuBar()->parentWidget(), new QEvent( QEvent::LayoutHint ) );
+}
+
+int QtxLogoMgr::find( const QString& id ) const
+{
+  int idx = -1;
+  for ( uint i = 0; i < myLogos.count() && idx < 0; i++ )
+  {
+    if ( (*myLogos.at( i ) ).id == id )
+      idx = i;
+  }
+  return idx;
+}
diff --git a/src/Qtx/QtxLogoMgr.h b/src/Qtx/QtxLogoMgr.h
new file mode 100644
index 000000000..bc18c9d36
--- /dev/null
+++ b/src/Qtx/QtxLogoMgr.h
@@ -0,0 +1,49 @@
+#ifndef QTX_LOGOMGR_H
+#define QTX_LOGOMGR_H
+
+#include "Qtx.h"
+
+class QMenuBar;
+
+#include <qobject.h>
+#include <qpixmap.h>
+
+#ifdef WIN32
+#pragma warning( disable : 4251 )
+#endif
+
+class QTX_EXPORT QtxLogoMgr : public QObject
+{
+  Q_OBJECT
+
+public:
+  QtxLogoMgr( QMenuBar* );
+  virtual ~QtxLogoMgr();
+
+  int        count() const;
+
+  void       insert( const QString&, const QPixmap&, const int = -1 );
+  void       remove( const QString& );
+  void       clear();
+
+  QMenuBar*  menuBar() const;
+
+private:
+  void       generate();
+  int        find( const QString& ) const;
+
+private:
+  typedef struct { QString id; QPixmap pix; } LogoInfo;
+  typedef QValueList<LogoInfo>                LogoList;
+
+private:
+  int        myId;
+  QMenuBar*  myMenus;
+  LogoList   myLogos;
+};
+
+#ifdef WIN32
+#pragma warning( default : 4251 )
+#endif
+
+#endif
-- 
2.39.2