File indexing completed on 2024-05-12 05:46:31

 /*
   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) version 3 or any later version
   accepted by the membership of KDE e.V. (or its successor appro-
   ved by the membership of KDE e.V.), which shall act as a proxy
   defined in Section 14 of version 3 of the license.
 
   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, see http://www.gnu.org/licenses/.
 */
 
 /*
   Copyright (C) 2012 Eike Hein <hein@kde.org>
 */
 
 #include "viewspringloader.h"
 #include "viewtree.h"
 
 #include <QDragMoveEvent>
 #include <QTabBar>
 #include <QMimeData>
 
 ViewSpringLoader::ViewSpringLoader(ViewContainer* viewContainer) : QObject(viewContainer)
 {
     m_viewContainer = viewContainer;
 
     m_hoverTimer.setSingleShot(true);
     connect(&m_hoverTimer, &QTimer::timeout, this, &ViewSpringLoader::springLoad);
 }
 
 ViewSpringLoader::~ViewSpringLoader()
 {
 }
 
 void ViewSpringLoader::addWidget(QWidget* widget)
 {
     widget->installEventFilter(this);
 }
 
 bool ViewSpringLoader::eventFilter(QObject* watched, QEvent* event)
 {
     if (event->type() == QEvent::DragEnter)
     {
         if (!dynamic_cast<QDragEnterEvent*>(event)->mimeData()->hasFormat(QStringLiteral("application/x-konversation-chatwindow")))
         {
             m_hoveredWidget = qobject_cast<QWidget*>(watched);
 
             event->accept();
 
             return true;
         }
     }
     else if (event->type() == QEvent::DragMove)
     {
         QDragMoveEvent* dragMoveEvent = dynamic_cast<QDragMoveEvent*>(event);
 
         if (!dragMoveEvent->mimeData()->hasFormat(QStringLiteral("application/x-konversation-chatwindow")))
         {
             ChatWindow* hoveredView = viewForPos(watched, dragMoveEvent->pos());
 
             if (hoveredView != m_hoveredView)
             {
                 m_hoveredView = hoveredView;
 
                 if (m_hoveredView)
                     m_hoverTimer.start(400);
             }
 
             event->ignore();
 
             return true;
         }
     }
     else if (event->type() == QEvent::Drop || event->type() == QEvent::DragLeave)
     {
         m_hoverTimer.stop();
         m_hoveredWidget = nullptr;
         m_hoveredView = nullptr;
     }
 
     return QObject::eventFilter(watched, event);
 }
 
 void ViewSpringLoader::springLoad()
 {
     if (m_hoveredView && m_hoveredView == viewForPos(m_hoveredWidget,
         m_hoveredWidget->mapFromGlobal(QCursor::pos())))
     {
         m_viewContainer->showView(m_hoveredView);
         m_hoveredView = nullptr;
     }
 }
 
 ChatWindow* ViewSpringLoader::viewForPos(QObject* widget, const QPoint& pos)
 {
     QTabBar* tabBar = qobject_cast<QTabBar*>(widget);
 
     if (tabBar)
        return m_viewContainer->getViewAt(tabBar->tabAt(pos));
     else
     {
         ViewTree* viewTree = qobject_cast<ViewTree*>(widget->parent());
 
         if (viewTree)
         {
             const QModelIndex& idx = viewTree->indexAt(QPoint(0, pos.y()));
 
             if (idx.isValid()) {
                 ChatWindow* view = static_cast<ChatWindow*>(idx.internalPointer());
 
                 return view;
             }
         }
     }
 
     return nullptr;
 }