Added old abandoned KDE3 version of the RoseGarden MIDI tool

git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/applications/rosegarden@1097595 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 167 insertions, 0 deletions

diff --git a/src/gui/widgets/Rotary.h b/src/gui/widgets/Rotary.h
new file mode 100644
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--- /dev/null
+++ b/src/gui/widgets/Rotary.h
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+
+/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
+
+/*
+    Rosegarden
+    A MIDI and audio sequencer and musical notation editor.
+
+    This program is Copyright 2000-2008
+        Guillaume Laurent   <[email protected]>,
+        Chris Cannam        <[email protected]>,
+        Richard Bown        <[email protected]>
+
+    The moral rights of Guillaume Laurent, Chris Cannam, and Richard
+    Bown to claim authorship of this work have been asserted.
+
+    Other copyrights also apply to some parts of this work.  Please
+    see the AUTHORS file and individual file headers for details.
+
+    This program 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.  See the file
+    COPYING included with this distribution for more information.
+*/
+
+#ifndef _RG_ROSEGARDENROTARY_H_
+#define _RG_ROSEGARDENROTARY_H_
+
+#include <map>
+#include <qcolor.h>
+#include <qwidget.h>
+
+
+class QWheelEvent;
+class QPaintEvent;
+class QPainter;
+class QMouseEvent;
+
+
+namespace Rosegarden
+{
+
+
+
+class Rotary : public QWidget
+{
+    Q_OBJECT
+public:
+
+    enum TickMode {
+        NoTicks,        // plain circle with no marks for end points etc
+        LimitTicks,     // marks at end points but not any intermediate points
+        IntervalTicks,  // end points plus quarter, half, three-quarters
+        PageStepTicks,  // end points plus every page-step interval
+        StepTicks       // end points plus every step interval
+    };
+
+    Rotary(QWidget *parent,
+           float minValue = 0.0,
+           float maxValue = 100.0,
+           float step = 1.0,
+           float pageStep = 10.0,
+           float initialPosition = 50.0,
+           int size = 20,
+           TickMode ticks = NoTicks,
+           bool snapToTicks = false,
+           bool centred = false,
+           bool logarithmic = false); // extents are logs, exp for display
+    ~Rotary();
+
+    void setMinValue(float min) { m_minValue = min; }
+    float getMinValue() const { return m_minValue; }
+
+    void setMaxValue(float max) { m_maxValue = max; }
+    float getMaxValue() const { return m_maxValue; }
+
+    void setStep(float step) { m_step = step; }
+    float getStep() const { return m_step; }
+
+    void setPageStep(float step) { m_pageStep = step; }
+    float getPageStep() const { return m_pageStep; }
+
+    int getSize() const { return m_size; }
+
+    // Position
+    //
+    float getPosition() const { return m_position; }
+    void setPosition(float position);
+
+    // Set the colour of the knob
+    //
+    void setKnobColour(const QColor &colour);
+    QColor getKnobColour() const { return m_knobColour; }
+
+signals:
+    void valueChanged(float);
+
+protected slots:
+    void slotFloatTimeout();
+
+protected:
+    virtual void paintEvent(QPaintEvent *e);
+    virtual void mousePressEvent(QMouseEvent *e);
+    virtual void mouseReleaseEvent(QMouseEvent *e);
+    virtual void mouseMoveEvent(QMouseEvent *e);
+    virtual void mouseDoubleClickEvent(QMouseEvent *e);
+    virtual void wheelEvent(QWheelEvent *e);
+
+    void snapPosition();
+    void drawPosition();
+    void drawTick(QPainter &paint, double angle, int size, bool internal);
+
+    float                m_minValue;
+    float                m_maxValue;
+    float                m_step;
+    float                m_pageStep;
+    int                  m_size;
+    TickMode             m_tickMode;
+    bool                 m_snapToTicks;
+    bool                 m_centred;
+    bool                 m_logarithmic;
+
+    float                m_position;
+    float                m_snapPosition;
+    float                m_initialPosition;
+    bool                 m_buttonPressed;
+    int                  m_lastY;
+    int                  m_lastX;
+
+    QColor               m_knobColour;
+
+    struct CacheIndex {
+
+        CacheIndex(int _s, int _c, int _a, int _n, int _ct) :
+            size(_s), colour(_c), angle(_a), numTicks(_n), centred(_ct) { }
+
+        bool operator<(const CacheIndex &i) const {
+            // woo!
+            if (size < i.size) return true;
+            else if (size > i.size) return false;
+            else if (colour < i.colour) return true;
+            else if (colour > i.colour) return false;
+            else if (angle < i.angle) return true;
+            else if (angle > i.angle) return false;
+            else if (numTicks < i.numTicks) return true;
+            else if (numTicks > i.numTicks) return false;
+            else if (centred == i.centred) return false;
+            else if (!centred) return true;
+            return false;
+        }
+
+        int          size;
+        unsigned int colour;
+        int          angle;
+        int          numTicks;
+        bool         centred;
+    };
+
+    typedef std::map<CacheIndex, QPixmap> PixmapCache;
+    static PixmapCache m_pixmaps;
+};
+
+
+
+}
+
+#endif