1 files changed, 142 insertions, 0 deletions
diff --git a/kdevdesigner/designer/listdnd.cpp b/kdevdesigner/designer/listdnd.cpp
new file mode 100644
index 00000000..34562e6f
--- /dev/null
+++ b/kdevdesigner/designer/listdnd.cpp
@@ -0,0 +1,142 @@
+/**********************************************************************
+** Copyright (C) 2002 Trolltech AS.  All rights reserved.
+**
+** This file is part of Qt Designer.
+**
+** This file may be distributed and/or modified under the terms of the
+** GNU General Public License version 2 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.
+**
+** Licensees holding valid Qt Enterprise Edition or Qt Professional Edition
+** licenses may use this file in accordance with the Qt Commercial License
+** Agreement provided with the Software.
+**
+** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
+** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+**
+** See http://www.trolltech.com/gpl/ for GPL licensing information.
+** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for
+**   information about Qt Commercial License Agreements.
+**
+** Contact info@trolltech.com if any conditions of this licensing are
+** not clear to you.
+**
+**********************************************************************/
+
+#include "listdnd.h"
+#include <qwidget.h>
+#include <qpainter.h>
+
+ListDnd::ListDnd( QScrollView * eventSource, const char * name )
+    : QObject( eventSource, name ),
+      dragInside( FALSE ), dragDelete( TRUE ), dropConfirmed( FALSE ), dMode( Both )
+{
+    src = eventSource;
+    src->setAcceptDrops( TRUE );
+    src->installEventFilter( this );
+    src->viewport()->installEventFilter( this );
+
+    line = new QWidget( src->viewport(), 0, Qt::WStyle_NoBorder | WStyle_StaysOnTop );
+    line->setBackgroundColor( Qt::black );
+    line->resize( src->viewport()->width(), 2 );
+    line->hide();
+}
+
+void ListDnd::setDragMode( int mode )
+{
+    dMode = mode;
+}
+
+int ListDnd::dragMode() const
+{
+    return dMode;
+}
+
+bool ListDnd::eventFilter( QObject *, QEvent * event )
+{
+    switch ( event->type() ) {
+    case QEvent::DragEnter:
+	return dragEnterEvent( (QDragEnterEvent *) event );
+    case QEvent::DragLeave:
+	return dragLeaveEvent( (QDragLeaveEvent *) event );
+    case QEvent::DragMove:
+	return dragMoveEvent( (QDragMoveEvent *) event );
+    case QEvent::Drop:
+	return dropEvent( (QDropEvent *) event );
+    case QEvent::MouseButtonPress:
+	return mousePressEvent( (QMouseEvent *) event );
+    case QEvent::MouseMove:
+	return mouseMoveEvent( (QMouseEvent *) event );
+    default:
+	break;
+    }
+    return FALSE;
+}
+
+
+bool ListDnd::dragEnterEvent( QDragEnterEvent * event )
+{
+    if ( dMode == None ) {
+	return TRUE;
+    }
+
+    bool ok = ( ( ( dMode & Both ) == Both ) ||
+		( ( dMode & Internal ) && ( event->source() == src ) ) ||
+		( ( dMode & External ) && ( event->source() != src ) ) );
+
+    if ( ok && canDecode( event ) ) {
+	event->accept();
+	dragInside = TRUE;
+	if ( !( dMode & NullDrop ) ) {
+	    updateLine( event->pos() );
+	    line->show();
+	}
+    }
+    return TRUE;
+}
+
+bool ListDnd::dragLeaveEvent( QDragLeaveEvent * )
+{
+    dragInside = FALSE;
+    line->hide();
+    return TRUE;
+}
+
+bool ListDnd::dragMoveEvent( QDragMoveEvent * event )
+{
+    if ( dragInside && dMode && !( dMode & NullDrop ) ) {
+	updateLine( event->pos() );
+    }
+    return TRUE;
+}
+
+bool ListDnd::dropEvent( QDropEvent * )
+{
+    // do nothing
+    return FALSE;
+}
+
+bool ListDnd::mousePressEvent( QMouseEvent * event )
+{
+    if ( event->button() == LeftButton )
+	mousePressPos = event->pos();
+    return FALSE;
+}
+
+bool ListDnd::mouseMoveEvent( QMouseEvent * )
+{
+    // do nothing
+    return FALSE;
+}
+
+void ListDnd::updateLine( const QPoint & )
+{
+    // do nothing
+}
+
+bool ListDnd::canDecode( QDragEnterEvent * )
+{
+    // do nothing
+    return FALSE;
+}