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 #include "../style/style.hpp"
  28
  29 #include <QWidget>
  30
  31 class QcRangeSlider :
  32   public QWidget, QcHelper, QcAbstractStepValue, QtCollider::Style::Client
  33 {
  34   Q_OBJECT
  35   Q_PROPERTY( Qt::Orientation orientation
  36               READ orientation WRITE setOrientation );
  37   Q_PROPERTY( double loValue READ loValue WRITE setLoValue )
  38   Q_PROPERTY( double hiValue READ hiValue WRITE setHiValue )
  39   Q_PROPERTY( double shiftScale READ dummyFloat WRITE setShiftScale );
  40   Q_PROPERTY( double ctrlScale READ dummyFloat WRITE setCtrlScale );
  41   Q_PROPERTY( double altScale READ dummyFloat WRITE setAltScale );
  42   Q_PROPERTY( double step READ dummyFloat WRITE setStep )
  43   Q_PROPERTY( QColor grooveColor READ grooveColor WRITE setGrooveColor );
  44   Q_PROPERTY( QColor focusColor READ focusColor WRITE setFocusColor );
  45   Q_PROPERTY( QColor knobColor READ knobColor WRITE setKnobColor );
  46
  47   public:
  48     enum MouseMode {
  49       None = 0,
  50       Move,
  51       MoveHi,
  52       MoveLo,
  53       SetLo,
  54       SetHi
  55     };
  56
  57     QcRangeSlider();
  58     Qt::Orientation orientation() const { return _ort; }
  59     void setOrientation( Qt::Orientation o );
  60     double loValue() const { return _lo; }
  61     void setLoValue( double );
  62     double hiValue() const { return _hi; }
  63     void setHiValue( double );
  64     void setRange( double val, double range );
  65     void setStep( double f ) { _step = f; }
  66     QSize sizeHint() const;
  67     QSize minimumSizeHint() const;
  68
  69     const QColor & knobColor() const
  70       { return _knobColor.isValid() ? _knobColor : palette().color(QPalette::ButtonText); }
  71     void setKnobColor(const QColor &c) { _knobColor = c; update(); }
  72
  73   public Q_SLOTS:
  74     void increment( double factor );
  75     void decrement( double factor );
  76
  77   Q_SIGNALS:
  78     void action();
  79
  80   private:
  81     QRect thumbRect();
  82     QRect valueRect();
  83     double valueFromPos( const QPoint& pos );
  84     void moveBy( double );
  85     void increment();
  86     void decrement();
  87     void mouseMoveEvent ( QMouseEvent * );
  88     void mousePressEvent ( QMouseEvent * );
  89     void mouseReleaseEvent ( QMouseEvent * );
  90     void keyPressEvent ( QKeyEvent * );
  91     void paintEvent ( QPaintEvent * );
  92
  93     Qt::Orientation _ort;
  94     double _lo;
  95     double _hi;
  96     double _step;
  97     QPoint dragOrigin;
  98     double dragVal, dragRange;
  99     MouseMode mouseMode;
 100
 101     QColor _knobColor;
 102 };
 103
 104 #endif