Line data    Source code

       1             : 
       2             : /* Copyright (c) 2009-2015, Stefan Eilemann <eile@equalizergraphics.com>
       3             :  *                          Cedric Stalder <cedric.stalder@gmail.com>
       4             :  *
       5             :  * This library is free software; you can redistribute it and/or modify it under
       6             :  * the terms of the GNU Lesser General Public License version 2.1 as published
       7             :  * by the Free Software Foundation.
       8             :  *
       9             :  * This library is distributed in the hope that it will be useful, but WITHOUT
      10             :  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
      11             :  * FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
      12             :  * details.
      13             :  *
      14             :  * You should have received a copy of the GNU Lesser General Public License
      15             :  * along with this library; if not, write to the Free Software Foundation, Inc.,
      16             :  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
      17             :  */
      18             : 
      19             : #ifndef EQSERVER_CANVAS_H
      20             : #define EQSERVER_CANVAS_H
      21             : 
      22             : #include <eq/server/api.h>
      23             : #include "types.h"
      24             : #include "visitorResult.h"  // enum
      25             : 
      26             : #include <eq/fabric/canvas.h> // base class
      27             : 
      28             : #include <lunchbox/api.h>
      29             : #include <string>
      30             : 
      31             : namespace eq
      32             : {
      33             : namespace server
      34             : {
      35             : /** The canvas. @sa eq::Canvas */
      36             : class Canvas : public fabric::Canvas< Config, Canvas, Segment, Layout >
      37             : {
      38             : public:
      39             :     /** Construct a new Canvas. */
      40             :     EQSERVER_API explicit Canvas( Config* parent );
      41             : 
      42             :     /** Destruct this canvas. */
      43             :     virtual ~Canvas();
      44             : 
      45             :     /** @name Data Access */
      46             :     //@{
      47             :     /** @return the Server of this canvas. @version 1.0 */
      48             :     ServerPtr getServer();
      49             : 
      50             :     /** @return the segment of the given path. */
      51             :     Segment* getSegment( const SegmentPath& path );
      52             : 
      53             :     /** @return true if this canvas is initialized. */
      54         442 :     bool isStopped() const { return _state == STATE_STOPPED; }
      55             : 
      56             :     /** @return true if this canvas is initialized. */
      57             :     bool isRunning() const { return _state == STATE_RUNNING; }
      58             : 
      59             :     /** @return true if this canvas should be deleted. */
      60           8 :     bool needsDelete() const { return _state == STATE_DELETE; }
      61             :     //@}
      62             : 
      63             :     /**
      64             :      * @name Operations
      65             :      */
      66             :     //@{
      67             :     void init();
      68             :     void exit();
      69             : 
      70             :     /** Schedule deletion of this canvas. */
      71             :     void postDelete();
      72             :     //@}
      73             : 
      74             : protected:
      75             :     virtual void activateLayout( const uint32_t index );
      76             : 
      77             : private:
      78             :     enum State
      79             :     {
      80             :         STATE_STOPPED = 0,  // next: RUNNING
      81             :         STATE_RUNNING,      // next: STOPPED or DELETE
      82             :         STATE_DELETE,       // next: destructor
      83             :     }
      84             :         _state;
      85             : 
      86             :     struct Private;
      87             :     Private* _private; // placeholder for binary-compatible changes
      88             : 
      89             :     /** Run-time layout switch */
      90             :     void _switchLayout( const uint32_t oldIndex, const uint32_t newIndex );
      91             : 
      92             : };
      93             : 
      94             : }
      95             : }
      96             : #endif // EQSERVER_CANVAS_H