File indexing completed on 2024-05-12 16:34:30

 /* This file is part of the KDE project
  * Copyright (c) 2008 Jan Hambrecht <jaham@gmx.net>
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library 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
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  */
 
 #include "SpaceNavigatorDevice.h"
 #include "SpaceNavigatorPollingThread.h"
 #include "SpaceNavigatorEvent.h"
 #include "SpaceNavigatorDebug.h"
 
 #include <KoToolManager.h>
 #include <KoCanvasController.h>
 
 #include <spnav.h>
 #include <math.h>
 
 #define SpaceNavigatorDevice_ID "SpaceNavigator"
 
 SpaceNavigatorDevice::SpaceNavigatorDevice( QObject * parent )
 : KoInputDeviceHandler( parent, SpaceNavigatorDevice_ID ), m_thread( new SpaceNavigatorPollingThread( this ) )
 {
     qRegisterMetaType<Qt::MouseButtons>( "Qt::MouseButtons" );
     qRegisterMetaType<Qt::MouseButton>( "Qt::MouseButton" );
     connect( m_thread, SIGNAL(moveEvent(int,int,int,int,int,int,Qt::MouseButtons)),
             this, SLOT(slotMoveEvent(int,int,int,int,int,int,Qt::MouseButtons)));
     connect( m_thread, SIGNAL(buttonEvent(int,int,int,int,int,int,Qt::MouseButtons,Qt::MouseButton,int)),
             this, SLOT(slotButtonEvent(int,int,int,int,int,int,Qt::MouseButtons,Qt::MouseButton,int)));
 }
 
 SpaceNavigatorDevice::~SpaceNavigatorDevice()
 {
 }
 
 bool SpaceNavigatorDevice::start()
 {
     if( m_thread->isRunning() )
         return true;
 
     m_thread->start();
 
     return true;
 }
 
 bool SpaceNavigatorDevice::stop()
 {
     if( ! m_thread->isRunning() )
         return true;
 
     m_thread->stop();
 
     if( ! m_thread->wait( 500 ) )
         m_thread->terminate();
 
     spnav_close();
 
     return true;
 }
 
 void SpaceNavigatorDevice::slotMoveEvent( int x, int y, int z, int rx, int ry, int rz, Qt::MouseButtons buttons )
 {
     SpaceNavigatorEvent e( KoInputDeviceHandlerEvent::PositionChanged );
     e.setPosition( x, y, z );
     e.setRotation( rx, ry, rz );
     e.setButton( Qt::NoButton );
     e.setButtons( buttons );
     KoToolManager::instance()->injectDeviceEvent( &e );
 
     if( ! e.isAccepted() )
     {
         // no tool wants the event, so do some standard actions
         KoCanvasController * controller = KoToolManager::instance()->activeCanvasController();
         // check if the z-movement is dominant
         if( qAbs(z) > qAbs(x) && qAbs(z) > qAbs(y) )
         {
             // zoom
             controller->zoomBy( controller->preferredCenter().toPoint(), pow(1.01,-z/10) );
         }
         else
         {
             // pan
             controller->pan( QPoint( -x, -y ) );
         }
     }
 }
 
 void SpaceNavigatorDevice::slotButtonEvent( int x, int y, int z, int rx, int ry, int rz, Qt::MouseButtons buttons, Qt::MouseButton button, int type )
 {
     SpaceNavigatorEvent e( static_cast<KoInputDeviceHandlerEvent::Type>( type ) );
     e.setPosition( x, y, z );
     e.setRotation( rx, ry, rz );
     e.setButton( button );
     e.setButtons( buttons );
     KoToolManager::instance()->injectDeviceEvent( &e );
 }