QtCollider/widgets/QcRangeSlider.h

   1 /************************************************************************
   2 *
   3 * Copyright 2010 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_RANGE_SLIDER
  23 #define QC_RANGE_SLIDER
  24
  25 #include "QcAbstractStepValue.h"
  26 #include "../QcHelper.h"
  27
  28 #include <QWidget>
  29
  30 class QcRangeSlider :
  31   public QWidget, public QcHelper, public QcAbstractStepValue
  32 {
  33   Q_OBJECT
  34   Q_PROPERTY( Qt::Orientation orientation
  35               READ orientation WRITE setOrientation );
  36   Q_PROPERTY( float loValue READ loValue WRITE setLoValue )
  37   Q_PROPERTY( float hiValue READ hiValue WRITE setHiValue )
  38   Q_PROPERTY( float shiftScale READ dummyFloat WRITE setShiftScale );
  39   Q_PROPERTY( float ctrlScale READ dummyFloat WRITE setCtrlScale );
  40   Q_PROPERTY( float altScale READ dummyFloat WRITE setAltScale );
  41   Q_PROPERTY( float step READ dummyFloat WRITE setStep )
  42
  43   public:
  44     enum MouseMode {
  45       None = 0,
  46       Drag,
  47       SetLo,
  48       SetHi
  49     };
  50
  51     QcRangeSlider();
  52     Qt::Orientation orientation() const { return _ort; }
  53     void setOrientation( Qt::Orientation o );
  54     float loValue() const { return _lo; }
  55     void setLoValue( float );
  56     float hiValue() const { return _hi; }
  57     void setHiValue( float );
  58     void setStep( float f ) { _step = f; }
  59     QSize sizeHint() const;
  60     QSize minimumSizeHint() const;
  61
  62   public Q_SLOTS:
  63     void increment( double factor );
  64     void decrement( double factor );
  65
  66   Q_SIGNALS:
  67     void action();
  68
  69   private:
  70     QRect thumbRect();
  71     float valueFromPos( const QPoint& pos );
  72     void moveBy( float );
  73     void increment();
  74     void decrement();
  75     void mouseMoveEvent ( QMouseEvent * );
  76     void mousePressEvent ( QMouseEvent * );
  77     void mouseReleaseEvent ( QMouseEvent * );
  78     void keyPressEvent ( QKeyEvent * );
  79     void paintEvent ( QPaintEvent * );
  80
  81     Qt::Orientation _ort;
  82     float _lo;
  83     float _hi;
  84     float _step;
  85     QPoint dragOffset;
  86     MouseMode mouseMode;
  87 };
  88
  89 #endif