diff options
Diffstat (limited to 'tqtinterface/qt4/tools/designer/designer/listdnd.cpp')
-rw-r--r-- | tqtinterface/qt4/tools/designer/designer/listdnd.cpp | 149 |
1 files changed, 149 insertions, 0 deletions
diff --git a/tqtinterface/qt4/tools/designer/designer/listdnd.cpp b/tqtinterface/qt4/tools/designer/designer/listdnd.cpp new file mode 100644 index 0000000..dfc010d --- /dev/null +++ b/tqtinterface/qt4/tools/designer/designer/listdnd.cpp @@ -0,0 +1,149 @@ +/********************************************************************** +** Copyright (C) 2005-2008 Trolltech ASA. All rights reserved. +** +** This file is part of TQt Designer. +** +** This file may be used under the terms of the GNU General +** Public License versions 2.0 or 3.0 as published by the Free +** Software Foundation and appearing in the files LICENSE.GPL2 +** and LICENSE.GPL3 included in the packaging of this file. +** Alternatively you may (at your option) use any later version +** of the GNU General Public License if such license has been +** publicly approved by Trolltech ASA (or its successors, if any) +** and the KDE Free TQt Foundation. +** +** Please review the following information to ensure GNU General +** Public Licensing requirements will be met: +** http://trolltech.com/products/qt/licenses/licensing/opensource/. +** If you are unsure which license is appropriate for your use, please +** review the following information: +** http://trolltech.com/products/qt/licenses/licensing/licensingoverview +** or contact the sales department at sales@trolltech.com. +** +** Licensees holding valid TQt Commercial licenses may use this file in +** accordance with the TQt Commercial License Agreement provided with +** the Software. +** +** This file is provided "AS IS" with NO WARRANTY OF ANY KIND, +** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR +** A PARTICULAR PURPOSE. Trolltech reserves all rights not granted +** herein. +** +**********************************************************************/ + +#include "listdnd.h" +#include <tqwidget.h> +#include <tqpainter.h> + +ListDnd::ListDnd( TQScrollView * eventSource, const char * name ) + : TQObject( eventSource, name ), + dragInside( FALSE ), dragDelete( TRUE ), dropConfirmed( FALSE ), dMode( Both ) +{ + src = eventSource; + src->setAcceptDrops( TRUE ); + src->installEventFilter( this ); + src->viewport()->installEventFilter( this ); + + line = new TQWidget( src->viewport(), 0, (WFlags)(TQt::WStyle_NoBorder | TQt::WStyle_StaysOnTop) ); + line->setBackgroundColor( TQt::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( TQObject *, TQEvent * event ) +{ + switch ( event->type() ) { + case TQEvent::DragEnter: + return dragEnterEvent( (TQDragEnterEvent *) event ); + case TQEvent::DragLeave: + return dragLeaveEvent( (TQDragLeaveEvent *) event ); + case TQEvent::DragMove: + return dragMoveEvent( (TQDragMoveEvent *) event ); + case TQEvent::Drop: + return dropEvent( (TQDropEvent *) event ); + case TQEvent::MouseButtonPress: + return mousePressEvent( (TQMouseEvent *) event ); + case TQEvent::MouseMove: + return mouseMoveEvent( (TQMouseEvent *) event ); + default: + break; + } + return FALSE; +} + + +bool ListDnd::dragEnterEvent( TQDragEnterEvent * 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( TQDragLeaveEvent * ) +{ + dragInside = FALSE; + line->hide(); + return TRUE; +} + +bool ListDnd::dragMoveEvent( TQDragMoveEvent * event ) +{ + if ( dragInside && dMode && !( dMode & NullDrop ) ) { + updateLine( event->pos() ); + } + return TRUE; +} + +bool ListDnd::dropEvent( TQDropEvent * ) +{ + // do nothing + return FALSE; +} + +bool ListDnd::mousePressEvent( TQMouseEvent * event ) +{ + if ( event->button() == Qt::LeftButton ) + mousePressPos = event->pos(); + return FALSE; +} + +bool ListDnd::mouseMoveEvent( TQMouseEvent * ) +{ + // do nothing + return FALSE; +} + +void ListDnd::updateLine( const TQPoint & ) +{ + // do nothing +} + +bool ListDnd::canDecode( TQDragEnterEvent * ) +{ + // do nothing + return FALSE; +} |