QtCollider/widgets/QcKnob.hpp

   1 /************************************************************************
   2 *
   3 * Copyright 2011-2012 Jakob Leben (jakob.leben@gmail.com)
   4 *
   5 * This file is part of SuperCollider Qt GUI.
   6 *
   7 * This program is free software: you can redistribute it and/or modify
   8 * it under the terms of the GNU General Public License as published by
   9 * the Free Software Foundation, either version 3 of the License, or
  10 * (at your option) any later version.
  11 *
  12 * This program is distributed in the hope that it will be useful,
  13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 * GNU General Public License for more details.
  16 *
  17 * You should have received a copy of the GNU General Public License
  18 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19 *
  20 ************************************************************************/
  21
  22 #ifndef QC_KNOB_HPP
  23 #define QC_KNOB_HPP
  24
  25 #include <QWidget>
  26 #include "QcAbstractStepValue.h"
  27 #include "../style/style.hpp"
  28
  29 class QcKnob : public QWidget, QcAbstractStepValue, QtCollider::Style::Client
  30 {
  31   Q_OBJECT
  32   Q_PROPERTY( double shiftScale READ shiftScale WRITE setShiftScale );
  33   Q_PROPERTY( double ctrlScale READ ctrlScale WRITE setCtrlScale );
  34   Q_PROPERTY( double altScale READ altScale WRITE setAltScale );
  35
  36   Q_PROPERTY( double value READ value WRITE setValue )
  37   Q_PROPERTY( int mode READ mode WRITE setMode )
  38   Q_PROPERTY( double step READ step WRITE setStep )
  39   Q_PROPERTY( bool centered READ centered WRITE setCentered )
  40   Q_PROPERTY( QColor focusColor READ focusColor WRITE setFocusColor );
  41
  42 Q_SIGNALS:
  43   void action();
  44
  45 public:
  46   QcKnob();
  47   void setValue( double );
  48   double value() const { return _value; }
  49   void setMode( int i ) { _mode = i; }
  50   int mode() const { return _mode; }
  51   void setStep( float step ) { _step = step; }
  52   float step() const { return _step; }
  53   void setCentered( bool b ) { _centered = b; update(); }
  54   bool centered() const { return _centered; }
  55
  56   virtual QSize sizeHint() const { return QSize(40,40); }
  57   virtual QSize minimumSizeHint() const { return QSize(15,15); }
  58
  59 protected:
  60   virtual void mousePressEvent( QMouseEvent * );
  61   virtual void mouseMoveEvent( QMouseEvent * );
  62   virtual void paintEvent( QPaintEvent * );
  63
  64 private:
  65   double value( const QPoint & );
  66
  67   double _value;
  68   double _step;
  69   int _mode;
  70   QPoint _prevPos;
  71   bool _centered;
  72 };
  73
  74 #endif // QC_KNOB_HPP