File indexing completed on 2024-05-19 04:48:57

 /***************************************************************************
  *   Copyright (c) 2008  Jeff Mitchell <mitchell@kde.org>                  *
  *                                                                         *
  *   This program is free software; you can redistribute it and/or modify  *
  *   it under the terms of the GNU General Public License as published by  *
  *   the Free Software Foundation; either version 2 of the License, or     *
  *   (at your option) any later version.                                   *
  *                                                                         *
  *   This program is distributed in the hope that it will be useful,       *
  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  *   GNU General Public License for more details.                          *
  *                                                                         *
  *   You should have received a copy of the GNU General Public License     *
  *   along with this program; if not, write to the                         *
  *   Free Software Foundation, Inc.,                                       *
  *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.         *
  ***************************************************************************/
 
 #include "PopupDropperView.h"
 #include "PopupDropper.h"
 #include "PopupDropper_p.h"
 #include "PopupDropperItem.h"
 
 #include <QDragEnterEvent>
 #include <QDragMoveEvent>
 #include <QDragLeaveEvent>
 #include <QDropEvent>
 
 #include <QtDebug>
 
 class PopupDropperViewPrivate
 {
 public:
     PopupDropperViewPrivate( PopupDropper* pd )
         : pd( pd )
         , lastItem( nullptr )
         , entered( false )
         {}
 
     PopupDropper *pd;
     PopupDropperItem *lastItem;
     bool entered;
 };
 
 ////////////////////////////////////////////////////////////////////////////
 
 PopupDropperView::PopupDropperView( PopupDropper *pd, QGraphicsScene *scene, QWidget *parent )
     : QGraphicsView( scene, parent ) 
     , d( new PopupDropperViewPrivate( pd ) )
 {
     setInteractive( true );
     setAcceptDrops( true );
 }
 
 PopupDropperView::~PopupDropperView()
 {
     delete d;
 }
 
 void PopupDropperView::dragMoveEvent( QDragMoveEvent *event )
 {
     //qDebug() << "PopupDropperView::dragMoveEvent";
     QGraphicsItem* item = itemAt( event->pos() );
 
     #define svgitem(x) dynamic_cast<QGraphicsSvgItem*>(x)
     #define textitem(x) dynamic_cast<QGraphicsTextItem*>(x)
     #define borderitem(x) dynamic_cast<QGraphicsRectItem*>(x)
 
     if( !svgitem(item) && !textitem(item) && !borderitem(item) )
     {
         if( d->lastItem )
             d->lastItem->hoverLeft();
         d->lastItem = nullptr;
     }
     else if( svgitem(item) &&
             d->lastItem != dynamic_cast<PopupDropperItem*>( svgitem(item)->parentItem() ) )
     {
         //qDebug() << "svg item";
         if( d->lastItem )
             d->lastItem->hoverLeft();
         static_cast<PopupDropperItem*>( svgitem(item)->parentItem() )->hoverEntered();
         d->lastItem = static_cast<PopupDropperItem*>( svgitem(item)->parentItem() );
     }
     else if( textitem(item) && 
              d->lastItem != dynamic_cast<PopupDropperItem*>( textitem(item)->parentItem() ) )
     {
         //qDebug() << "text item";
         if( d->lastItem )
             d->lastItem->hoverLeft();
         static_cast<PopupDropperItem*>( textitem(item)->parentItem() )->hoverEntered();
         d->lastItem = static_cast<PopupDropperItem*>( textitem(item)->parentItem() );
     }
     else if( borderitem(item) && 
              d->lastItem != dynamic_cast<PopupDropperItem*>( borderitem(item)->parentItem() ) )
     {
         //qDebug() << "border item";
         if( d->lastItem )
             d->lastItem->hoverLeft();
         static_cast<PopupDropperItem*>( borderitem(item)->parentItem() )->hoverEntered();
         d->lastItem = static_cast<PopupDropperItem*>( borderitem(item)->parentItem() );
     }
     
     #undef borderitem
     #undef textitem
     #undef pditem
 
     event->accept();
 }
 
 void PopupDropperView::dragEnterEvent( QDragEnterEvent *event )
 {
     //qDebug() << "PopupDropperView::dragEnterEvent";
     event->accept();
     d->entered = true;
     d->pd->d->dragEntered();
 }
 
 void PopupDropperView::dragLeaveEvent( QDragLeaveEvent *event )
 {
     //qDebug() << "PopupDropperView::dragLeaveEvent";
     event->accept();
     if( d->lastItem )
     {
         d->lastItem->hoverLeft();
         d->lastItem = nullptr;
     }
     d->pd->d->dragLeft();
 }
 
 void PopupDropperView::dropEvent( QDropEvent *event )
 {
     //qDebug() << "PopupDropperView::dropEvent";
 
     if( !d->pd->d->amIOnTop( this ) )
     {
         event->accept();
         return;
     }
 
     QGraphicsItem* item = itemAt( event->pos() );
 
     if( QGraphicsSvgItem *svgItem = dynamic_cast<QGraphicsSvgItem*>(item) )
     {
         //qDebug() << "It's a svg item";
         if( PopupDropperItem *pdi = dynamic_cast<PopupDropperItem*>( svgItem->parentItem() ) )
             pdi->dropped( event );
     }
     else if( QGraphicsTextItem *textItem = dynamic_cast<QGraphicsTextItem*>(item) )
     {
         //qDebug() << "It's a text item";
         if( PopupDropperItem *pdi = dynamic_cast<PopupDropperItem*>( textItem->parentItem() ) )
             pdi->dropped( event );
     }
     else if( QGraphicsRectItem *borderItem = dynamic_cast<QGraphicsRectItem*>(item) )
     {
         //qDebug() << "It's a border item";
         if( PopupDropperItem *pdi = dynamic_cast<PopupDropperItem*>( borderItem->parentItem() ) )
             pdi->dropped( event );
     }
     event->accept();
     //qDebug() << "Leaving dropEvent";
 }
 
 void PopupDropperView::resetView()
 {
     d->lastItem = nullptr;
     d->entered = false;
     setAcceptDrops( true );
 }
 
 void PopupDropperView::deactivateHover()
 {
     if( d->lastItem )
         d->lastItem->hoverLeft();
     d->lastItem = nullptr;
 }
 
 bool PopupDropperView::entered() const
 {
     return d->entered;
 }
 
 void PopupDropperView::setEntered( bool entered )
 {
     d->entered = entered;
 }