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153 lines
3.7 KiB
153 lines
3.7 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_VUMETER_H_
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#define _RG_VUMETER_H_
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#include <tqcolor.h>
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#include <tqlabel.h>
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class TQWidget;
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class TQTimer;
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class TQPaintEvent;
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class TQPainter;
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namespace Rosegarden
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{
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class VelocityColour;
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class VUMeter : public TQLabel
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{
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TQ_OBJECT
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public:
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typedef enum
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{
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Plain,
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PeakHold,
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AudioPeakHoldShort,
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AudioPeakHoldLong,
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AudioPeakHoldIEC,
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AudioPeakHoldIECLong,
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FixedHeightVisiblePeakHold
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} VUMeterType;
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typedef enum
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{
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Horizontal,
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Vertical
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} VUAlignment;
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// Mono and stereo level setting. The AudioPeakHold meter types
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// expect levels in dB; other types expect levels between 0 and 1.
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//
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void setLevel(double level);
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void setLevel(double leftLevel, double rightLevel);
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// Mono and stereo record level setting. Same units. Only
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// applicable if hasRecord true in constructor.
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//
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void setRecordLevel(double level);
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void setRecordLevel(double leftLevel, double rightLevel);
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virtual void paintEvent(TQPaintEvent*);
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protected:
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// Constructor is protected - we can only create an object
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// from a sub-class of this type from a sub-class.
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//
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VUMeter(TQWidget *parent = 0,
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VUMeterType type = Plain,
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bool stereo = false,
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bool hasRecord = false,
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int width = 0,
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int height = 0,
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VUAlignment alignment = Horizontal,
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const char *name = 0);
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~VUMeter();
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virtual void meterStart() = 0;
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virtual void meterStop() = 0;
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int m_originalHeight;
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bool m_active;
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void setLevel(double leftLevel, double rightLevel, bool record);
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private slots:
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void slotReduceLevelLeft();
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void slotStopShowingPeakLeft();
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void slotReduceLevelRight();
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void slotStopShowingPeakRight();
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private:
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void drawMeterLevel(TQPainter *paint);
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void drawColouredBar(TQPainter *paint, int channel,
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int x, int y, int w, int h);
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VUMeterType m_type;
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VUAlignment m_alignment;
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TQColor m_background;
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short m_maxLevel;
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short m_levelLeft;
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short m_recordLevelLeft;
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short m_peakLevelLeft;
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short m_levelStepLeft;
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short m_recordLevelStepLeft;
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TQTimer *m_fallTimerLeft;
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TQTimer *m_peakTimerLeft;
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short m_levelRight;
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short m_recordLevelRight;
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short m_peakLevelRight;
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short m_levelStepRight;
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short m_recordLevelStepRight;
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TQTimer *m_fallTimerRight;
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TQTimer *m_peakTimerRight;
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bool m_showPeakLevel;
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short m_baseLevelStep;
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bool m_stereo;
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bool m_hasRecord;
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// We use this to work out our colours
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//
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VelocityColour *m_velocityColour;
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};
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}
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#endif
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