ground/gcs/src/libs/osgearth/osgQtQuick/DirtySupport.hpp

   1 /**
   2  ******************************************************************************
   3  *
   4  * @file       DirtySupport.hpp
   5  * @author     The LibrePilot Project, http://www.librepilot.org Copyright (C) 2016.
   6  * @addtogroup
   7  * @{
   8  * @addtogroup
   9  * @{
  10  * @brief
  11  *****************************************************************************/
  12 /*
  13  * This program is free software; you can redistribute it and/or modify
  14  * it under the terms of the GNU General Public License as published by
  15  * the Free Software Foundation; either version 3 of the License, or
  16  * (at your option) any later version.
  17  *
  18  * This program is distributed in the hope that it will be useful, but
  19  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  20  * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
  21  * for more details.
  22  *
  23  * You should have received a copy of the GNU General Public License along
  24  * with this program; if not, write to the Free Software Foundation, Inc.,
  25  * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  26  */
  27
  28 #ifndef _H_OSGQTQUICK_DIRTYSUPPORT_H_
  29 #define _H_OSGQTQUICK_DIRTYSUPPORT_H_
  30
  31 namespace osg {
  32 class Node;
  33 } // namespace osg
  34
  35 namespace osgQtQuick {
  36 /**
  37  * Provides support to:
  38  * - manage dirty state flags
  39  * - add/remove node callback to trigger refresh (compatible with viewer on demand mode)
  40  */
  41 class DirtySupport {
  42 public:
  43     explicit DirtySupport();
  44     virtual ~DirtySupport();
  45
  46 protected:
  47     int dirty() const;
  48     bool isDirty(int mask = 0xFFFF) const;
  49     void setDirty(int mask = 0xFFFF);
  50     void clearDirty();
  51
  52 private:
  53     struct Hidden;
  54     struct NodeUpdateCallback;
  55     Hidden *const h;
  56
  57     virtual osg::Node *nodeToUpdate() const = 0;
  58
  59     virtual void update() = 0;
  60 };
  61 } // namespace osgQtQuick
  62
  63 #endif // _H_OSGQTQUICK_DIRTYSUPPORT_H_