CursorPainter.hh

/*===========================================================================*\
 *                                                                           *
 *                              OpenFlipper                                  *
 *      Copyright (C) 2001-2009 by Computer Graphics Group, RWTH Aachen      *
 *                           www.openflipper.org                             *
 *                                                                           *
 *---------------------------------------------------------------------------*
 *  This file is part of OpenFlipper.                                        *
 *                                                                           *
 *  OpenFlipper is free software: you can redistribute it and/or modify      *
 *  it under the terms of the GNU Lesser General Public License as           *
 *  published by the Free Software Foundation, either version 3 of           *
 *  the License, or (at your option) any later version with the              *
 *  following exceptions:                                                    *
 *                                                                           *
 *  If other files instantiate templates or use macros                       *
 *  or inline functions from this file, or you compile this file and         *
 *  link it with other files to produce an executable, this file does        *
 *  not by itself cause the resulting executable to be covered by the        *
 *  GNU Lesser General Public License. This exception does not however       *
 *  invalidate any other reasons why the executable file might be            *
 *  covered by the GNU Lesser General Public License.                        *
 *                                                                           *
 *  OpenFlipper 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 Lesser General Public License for more details.                      *
 *                                                                           *
 *  You should have received a copy of the GNU LesserGeneral Public          *
 *  License along with OpenFlipper. If not,                                  *
 *  see <http://www.gnu.org/licenses/>.                                      *
 *                                                                           *
\*===========================================================================*/

#ifndef CURSORPAINTER_HH
#define CURSORPAINTER_HH

//== INCLUDES =================================================================

#include <QObject>
#include <QCursor>
#include <QVector>
#include <QRectF>

#include <ACG/GL/GLState.hh>
#include <OpenFlipper/common/GlobalDefines.hh>

//== NAMESPACES ===============================================================

//== FORWARDDECLARATIONS ======================================================
class glViewer;

//== CLASS DEFINITION =========================================================


class DLLEXPORT CursorPainter : public QObject
{
 Q_OBJECT

  public:
    CursorPainter (QObject *_parent = 0);

    ~CursorPainter ();

    void setCursor (const QCursor &_cursor);

    void initializeGL ();

    void registerViewer (glViewer *_viewer);

    void paintCursor (ACG::GLState *_state);

    void updateCursorPosition (QPointF _scenePos);

    QPointF cursorPosition ();

    void setEnabled (bool _enabled);

    void setForceNative (bool _enabled);

    bool enabled ();

    void setMouseIn (bool _in);

    QRectF cursorBoundingBox ();

  private:
    // Create a texture for the cursor
    void cursorToTexture ();
    void cursorToCursor ();

  private:
    QCursor cursor_;
    QCursor nativeCursor_;
    QPointF cursorPos_;

    bool initialized_;

    QVector<glViewer *> views_;

    bool enabled_;
    bool mouseIn_;
    bool forceNative_;

    // x and y offset between click position and texture (hotspot)
    int xOff_;
    int yOff_;
    GLuint texture_;
    bool hasCursor_;
};

//=============================================================================
#endif
//=============================================================================