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166 lines
4.8 KiB
166 lines
4.8 KiB
/*
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Rosegarden
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A MIDI and audio sequencer and musical notation editor.
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This program is Copyright 2000-2008
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Guillaume Laurent <glaurent@telegraph-road.org>,
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Chris Cannam <cannam@all-day-breakfast.com>,
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Richard Bown <richard.bown@ferventsoftware.com>
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The moral rights of Guillaume Laurent, Chris Cannam, and Richard
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Bown to claim authorship of this work have been asserted.
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Other copyrights also apply to some parts of this work. Please
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see the AUTHORS file and individual file headers for details.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version. See the file
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COPYING included with this distribution for more information.
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*/
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#ifndef _RG_ROSEGARDENROTARY_H_
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#define _RG_ROSEGARDENROTARY_H_
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#include <map>
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#include <tqcolor.h>
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#include <tqwidget.h>
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class TQWheelEvent;
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class TQPaintEvent;
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class TQPainter;
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class TQMouseEvent;
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namespace Rosegarden
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{
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class Rotary : public TQWidget
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{
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TQ_OBJECT
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public:
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enum TickMode {
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NoTicks, // plain circle with no marks for end points etc
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LimitTicks, // marks at end points but not any intermediate points
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IntervalTicks, // end points plus quarter, half, three-quarters
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PageStepTicks, // end points plus every page-step interval
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StepTicks // end points plus every step interval
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};
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Rotary(TQWidget *parent,
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float minValue = 0.0,
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float maxValue = 100.0,
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float step = 1.0,
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float pageStep = 10.0,
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float initialPosition = 50.0,
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int size = 20,
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TickMode ticks = NoTicks,
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bool snapToTicks = false,
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bool centred = false,
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bool logarithmic = false); // extents are logs, exp for display
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~Rotary();
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void setMinValue(float min) { m_minValue = min; }
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float getMinValue() const { return m_minValue; }
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void setMaxValue(float max) { m_maxValue = max; }
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float getMaxValue() const { return m_maxValue; }
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void setStep(float step) { m_step = step; }
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float getStep() const { return m_step; }
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void setPageStep(float step) { m_pageStep = step; }
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float getPageStep() const { return m_pageStep; }
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int getSize() const { return m_size; }
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// Position
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//
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float getPosition() const { return m_position; }
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void setPosition(float position);
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// Set the colour of the knob
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//
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void setKnobColour(const TQColor &colour);
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TQColor getKnobColour() const { return m_knobColour; }
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signals:
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void valueChanged(float);
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protected slots:
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void slotFloatTimeout();
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protected:
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virtual void paintEvent(TQPaintEvent *e);
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virtual void mousePressEvent(TQMouseEvent *e);
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virtual void mouseReleaseEvent(TQMouseEvent *e);
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virtual void mouseMoveEvent(TQMouseEvent *e);
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virtual void mouseDoubleClickEvent(TQMouseEvent *e);
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virtual void wheelEvent(TQWheelEvent *e);
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void snapPosition();
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void drawPosition();
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void drawTick(TQPainter &paint, double angle, int size, bool internal);
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float m_minValue;
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float m_maxValue;
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float m_step;
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float m_pageStep;
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int m_size;
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TickMode m_tickMode;
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bool m_snapToTicks;
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bool m_centred;
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bool m_logarithmic;
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float m_position;
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float m_snapPosition;
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float m_initialPosition;
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bool m_buttonPressed;
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int m_lastY;
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int m_lastX;
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TQColor m_knobColour;
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struct CacheIndex {
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CacheIndex(int _s, int _c, int _a, int _n, int _ct) :
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size(_s), colour(_c), angle(_a), numTicks(_n), centred(_ct) { }
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bool operator<(const CacheIndex &i) const {
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// woo!
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if (size < i.size) return true;
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else if (size > i.size) return false;
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else if (colour < i.colour) return true;
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else if (colour > i.colour) return false;
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else if (angle < i.angle) return true;
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else if (angle > i.angle) return false;
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else if (numTicks < i.numTicks) return true;
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else if (numTicks > i.numTicks) return false;
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else if (centred == i.centred) return false;
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else if (!centred) return true;
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return false;
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}
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int size;
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unsigned int colour;
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int angle;
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int numTicks;
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bool centred;
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};
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typedef std::map<CacheIndex, TQPixmap> PixmapCache;
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static PixmapCache m_pixmaps;
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};
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}
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#endif
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