Traverso/cvs/traverso/src/plugins/PluginSlider.h

/*
Copyright (C) 2006-2007 Remon Sijrier

This file is part of Traverso

Traverso 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) any later version.

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, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA.

*/


#ifndef PLUGIN_SLIDER_H
#define PLUGIN_SLIDER_H

#include <QWidget>
#include <QPainter>
#include <QMouseEvent>

class PluginControlPort;

class PluginSlider : public QWidget
{
        Q_OBJECT
        
public:
        PluginSlider(PluginControlPort* port);
        ~PluginSlider(){};
        
        void paint(QPainter *);
        void reset_default_value();
        void update_slider_position();
        
protected:
        void paintEvent(QPaintEvent *);
        void mousePressEvent(QMouseEvent *e);
        void mouseMoveEvent(QMouseEvent *e);
        void mouseReleaseEvent(QMouseEvent *e);
        void leaveEvent( QEvent* );
        void enterEvent( QEvent* );
        void wheelEvent(QWheelEvent* e );
        
private:
        PluginControlPort* m_port;
        float   m_max;
        float   m_min;
        float   m_value;
        float   m_stepvalue;
        int     m_xpos;
        bool    highlight;
        bool    dragging;
        
        void calculate_new_value(float mouseX);
        
signals:
        void sliderValueChanged(float value);
};
 
#endif

//eof

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