lbajardsilogic@0: /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
lbajardsilogic@0: 
lbajardsilogic@0: /*
lbajardsilogic@0:     Sonic Visualiser
lbajardsilogic@0:     An audio file viewer and annotation editor.
lbajardsilogic@0:     Centre for Digital Music, Queen Mary, University of London.
lbajardsilogic@0:     
lbajardsilogic@0:     This program is free software; you can redistribute it and/or
lbajardsilogic@0:     modify it under the terms of the GNU General Public License as
lbajardsilogic@0:     published by the Free Software Foundation; either version 2 of the
lbajardsilogic@0:     License, or (at your option) any later version.  See the file
lbajardsilogic@0:     COPYING included with this distribution for more information.
lbajardsilogic@0: */
lbajardsilogic@0: 
lbajardsilogic@0: /**
lbajardsilogic@0:  * A rotary dial widget.
lbajardsilogic@0:  *
lbajardsilogic@0:  * Based on an original design by Thorsten Wilms.
lbajardsilogic@0:  *
lbajardsilogic@0:  * Implemented as a widget for the Rosegarden MIDI and audio sequencer
lbajardsilogic@0:  * and notation editor by Chris Cannam.
lbajardsilogic@0:  *
lbajardsilogic@0:  * Extracted into a standalone Qt3 widget by Pedro Lopez-Cabanillas
lbajardsilogic@0:  * and adapted for use in QSynth.
lbajardsilogic@0:  * 
lbajardsilogic@0:  * Ported to Qt4 by Chris Cannam.
lbajardsilogic@0:  *
lbajardsilogic@0:  * This file copyright 2003-2006 Chris Cannam, copyright 2005 Pedro
lbajardsilogic@0:  * Lopez-Cabanillas, copyright 2006 Queen Mary, University of London.
lbajardsilogic@0:  *
lbajardsilogic@0:  * This program is free software; you can redistribute it and/or
lbajardsilogic@0:  * modify it under the terms of the GNU General Public License as
lbajardsilogic@0:  * published by the Free Software Foundation; either version 2 of the
lbajardsilogic@0:  * License, or (at your option) any later version.  See the file
lbajardsilogic@0:  * COPYING included with this distribution for more information.
lbajardsilogic@0:  */
lbajardsilogic@0: 
lbajardsilogic@0: #include "AudioDial.h"
lbajardsilogic@0: 
lbajardsilogic@0: #include "base/RangeMapper.h"
lbajardsilogic@0: 
lbajardsilogic@0: #include <cmath>
lbajardsilogic@0: #include <iostream>
lbajardsilogic@0: 
lbajardsilogic@0: #include <QTimer>
lbajardsilogic@0: #include <QPainter>
lbajardsilogic@0: #include <QPixmap>
lbajardsilogic@0: #include <QColormap>
lbajardsilogic@0: #include <QMouseEvent>
lbajardsilogic@0: #include <QPaintEvent>
lbajardsilogic@0: #include <QInputDialog>
lbajardsilogic@0: 
lbajardsilogic@0: using std::endl;
lbajardsilogic@0: using std::cerr;
lbajardsilogic@0: 
lbajardsilogic@0: 
lbajardsilogic@0: //!!! Pedro updated his version to use my up/down response code from RG -- need to grab that code in preference to this version from Rui
lbajardsilogic@0: 
lbajardsilogic@0: 
lbajardsilogic@0: //-------------------------------------------------------------------------
lbajardsilogic@0: // AudioDial - Instance knob widget class.
lbajardsilogic@0: //
lbajardsilogic@0: 
lbajardsilogic@0: #define AUDIO_DIAL_MIN (0.25 * M_PI)
lbajardsilogic@0: #define AUDIO_DIAL_MAX (1.75 * M_PI)
lbajardsilogic@0: #define AUDIO_DIAL_RANGE (AUDIO_DIAL_MAX - AUDIO_DIAL_MIN)
lbajardsilogic@0: 
lbajardsilogic@0: 
lbajardsilogic@0: //static int dialsExtant = 0;
lbajardsilogic@0: 
lbajardsilogic@0: 
lbajardsilogic@0: // Constructor.
lbajardsilogic@0: AudioDial::AudioDial(QWidget *parent) :
lbajardsilogic@0:     QDial(parent),
lbajardsilogic@0:     m_knobColor(Qt::black),
lbajardsilogic@0:     m_meterColor(Qt::white),
lbajardsilogic@0:     m_defaultValue(0),
lbajardsilogic@0:     m_mappedValue(0),
lbajardsilogic@0:     m_noMappedUpdate(false),
lbajardsilogic@0:     m_showTooltip(true),
lbajardsilogic@0:     m_rangeMapper(0)
lbajardsilogic@0: {
lbajardsilogic@0:     m_mouseDial = false;
lbajardsilogic@0:     m_mousePressed = false;
lbajardsilogic@0: //    ++dialsExtant;
lbajardsilogic@0: }
lbajardsilogic@0: 
lbajardsilogic@0: 
lbajardsilogic@0: // Destructor.
lbajardsilogic@0: AudioDial::~AudioDial (void)
lbajardsilogic@0: {
lbajardsilogic@0:     delete m_rangeMapper;
lbajardsilogic@0: //    --dialsExtant;
lbajardsilogic@0: }
lbajardsilogic@0: 
lbajardsilogic@0: 
lbajardsilogic@0: void AudioDial::setRangeMapper(RangeMapper *mapper)
lbajardsilogic@0: {
lbajardsilogic@0: //    std::cerr << "AudioDial[" << this << "][\"" << objectName().toStdString() << "\"::setRangeMapper(" << mapper << ") [current is " << m_rangeMapper << "] (have " << dialsExtant << " dials extant)" << std::endl;
lbajardsilogic@0: 
lbajardsilogic@0:     if (m_rangeMapper == mapper) return;
lbajardsilogic@0: 
lbajardsilogic@0:     if (!m_rangeMapper && mapper) {
lbajardsilogic@0:         connect(this, SIGNAL(valueChanged(int)),
lbajardsilogic@0:                 this, SLOT(updateMappedValue(int)));
lbajardsilogic@0:     }
lbajardsilogic@0: 
lbajardsilogic@0:     delete m_rangeMapper;
lbajardsilogic@0:     m_rangeMapper = mapper;
lbajardsilogic@0: 
lbajardsilogic@0:     updateMappedValue(value());
lbajardsilogic@0: }
lbajardsilogic@0: 
lbajardsilogic@0: 
lbajardsilogic@0: void AudioDial::paintEvent(QPaintEvent *)
lbajardsilogic@0: {
lbajardsilogic@0:     QPainter paint;
lbajardsilogic@0: 
lbajardsilogic@0:     float angle = AUDIO_DIAL_MIN // offset
lbajardsilogic@0: 	+ (AUDIO_DIAL_RANGE *
lbajardsilogic@0: 	   (float(QDial::value() - QDial::minimum()) /
lbajardsilogic@0: 	    (float(QDial::maximum() - QDial::minimum()))));
lbajardsilogic@0:     int degrees = int(angle * 180.0 / M_PI);
lbajardsilogic@0: 
lbajardsilogic@0:     int ns = notchSize();
lbajardsilogic@0:     int numTicks = 1 + (maximum() + ns - minimum()) / ns;
lbajardsilogic@0: 	
lbajardsilogic@0:     QColor knobColor(m_knobColor);
lbajardsilogic@0:     if (knobColor == Qt::black)
lbajardsilogic@0: 	knobColor = palette().background().color();
lbajardsilogic@0: 
lbajardsilogic@0:     QColor meterColor(m_meterColor);
lbajardsilogic@0:     if (!isEnabled())
lbajardsilogic@0: 	meterColor = palette().mid().color();
lbajardsilogic@0:     else if (m_meterColor == Qt::white)
lbajardsilogic@0: 	meterColor = palette().highlight().color();
lbajardsilogic@0: 
lbajardsilogic@0:     int m_size = width() < height() ? width() : height();
lbajardsilogic@0:     int scale = 1;
lbajardsilogic@0:     int width = m_size - 2*scale;
lbajardsilogic@0: 
lbajardsilogic@0:     paint.begin(this);
lbajardsilogic@0:     paint.setRenderHint(QPainter::Antialiasing, true);
lbajardsilogic@0:     paint.translate(1, 1);
lbajardsilogic@0: 
lbajardsilogic@0:     QPen pen;
lbajardsilogic@0:     QColor c;
lbajardsilogic@0: 
lbajardsilogic@0:     // Knob body and face...
lbajardsilogic@0: 
lbajardsilogic@0:     c = knobColor;
lbajardsilogic@0:     pen.setColor(knobColor);
lbajardsilogic@0:     pen.setWidth(scale * 2);
lbajardsilogic@0:     pen.setCapStyle(Qt::FlatCap);
lbajardsilogic@0: 	
lbajardsilogic@0:     paint.setPen(pen);
lbajardsilogic@0:     paint.setBrush(c);
lbajardsilogic@0: 
lbajardsilogic@0:     int indent = (int)(width * 0.15 + 1);
lbajardsilogic@0: 
lbajardsilogic@0:     paint.drawEllipse(indent-1, indent-1, width-2*indent, width-2*indent);
lbajardsilogic@0: 
lbajardsilogic@0:     pen.setWidth(3 * scale);
lbajardsilogic@0:     int pos = indent-1 + (width-2*indent) / 20;
lbajardsilogic@0:     int darkWidth = (width-2*indent) * 3 / 4;
lbajardsilogic@0:     while (darkWidth) {
lbajardsilogic@0: 	c = c.light(102);
lbajardsilogic@0: 	pen.setColor(c);
lbajardsilogic@0: 	paint.setPen(pen);
lbajardsilogic@0: 	paint.drawEllipse(pos, pos, darkWidth, darkWidth);
lbajardsilogic@0: 	if (!--darkWidth) break;
lbajardsilogic@0: 	paint.drawEllipse(pos, pos, darkWidth, darkWidth);
lbajardsilogic@0: 	if (!--darkWidth) break;
lbajardsilogic@0: 	paint.drawEllipse(pos, pos, darkWidth, darkWidth);
lbajardsilogic@0: 	++pos; --darkWidth;
lbajardsilogic@0:     }
lbajardsilogic@0: 
lbajardsilogic@0:     // Tick notches...
lbajardsilogic@0: 
lbajardsilogic@0:     if ( notchesVisible() ) {
lbajardsilogic@0: //	std::cerr << "Notches visible" << std::endl;
lbajardsilogic@0: 	pen.setColor(palette().dark().color());
lbajardsilogic@0: 	pen.setWidth(scale);
lbajardsilogic@0: 	paint.setPen(pen);
lbajardsilogic@0: 	for (int i = 0; i < numTicks; ++i) {
lbajardsilogic@0: 	    int div = numTicks;
lbajardsilogic@0: 	    if (div > 1) --div;
lbajardsilogic@0: 	    drawTick(paint, AUDIO_DIAL_MIN + (AUDIO_DIAL_MAX - AUDIO_DIAL_MIN) * i / div,
lbajardsilogic@0: 		     width, true);
lbajardsilogic@0: 	}
lbajardsilogic@0:     }
lbajardsilogic@0: 
lbajardsilogic@0:     // The bright metering bit...
lbajardsilogic@0: 
lbajardsilogic@0:     c = meterColor;
lbajardsilogic@0:     pen.setColor(c);
lbajardsilogic@0:     pen.setWidth(indent);
lbajardsilogic@0:     paint.setPen(pen);
lbajardsilogic@0: 
lbajardsilogic@0: //    std::cerr << "degrees " << degrees << ", gives us " << -(degrees - 45) * 16 << std::endl;
lbajardsilogic@0: 
lbajardsilogic@0:     int arcLen = -(degrees - 45) * 16;
lbajardsilogic@0:     if (arcLen == 0) arcLen = -16;
lbajardsilogic@0: 
lbajardsilogic@0:     paint.drawArc(indent/2, indent/2,
lbajardsilogic@0: 		  width-indent, width-indent, (180 + 45) * 16, arcLen);
lbajardsilogic@0: 
lbajardsilogic@0:     paint.setBrush(Qt::NoBrush);
lbajardsilogic@0: 
lbajardsilogic@0:     // Shadowing...
lbajardsilogic@0: 
lbajardsilogic@0:     pen.setWidth(scale);
lbajardsilogic@0:     paint.setPen(pen);
lbajardsilogic@0: 
lbajardsilogic@0:     // Knob shadow...
lbajardsilogic@0: 
lbajardsilogic@0:     int shadowAngle = -720;
lbajardsilogic@0:     c = knobColor.dark();
lbajardsilogic@0:     for (int arc = 120; arc < 2880; arc += 240) {
lbajardsilogic@0: 	pen.setColor(c);
lbajardsilogic@0: 	paint.setPen(pen);
lbajardsilogic@0: 	paint.drawArc(indent, indent,
lbajardsilogic@0: 		      width-2*indent, width-2*indent, shadowAngle + arc, 240);
lbajardsilogic@0: 	paint.drawArc(indent, indent,
lbajardsilogic@0: 		      width-2*indent, width-2*indent, shadowAngle - arc, 240);
lbajardsilogic@0: 	c = c.light(110);
lbajardsilogic@0:     }
lbajardsilogic@0: 
lbajardsilogic@0:     // Scale shadow...
lbajardsilogic@0: 
lbajardsilogic@0:     shadowAngle = 2160;
lbajardsilogic@0:     c = palette().dark().color();
lbajardsilogic@0:     for (int arc = 120; arc < 2880; arc += 240) {
lbajardsilogic@0: 	pen.setColor(c);
lbajardsilogic@0: 	paint.setPen(pen);
lbajardsilogic@0: 	paint.drawArc(scale/2, scale/2,
lbajardsilogic@0: 		      width-scale, width-scale, shadowAngle + arc, 240);
lbajardsilogic@0: 	paint.drawArc(scale/2, scale/2,
lbajardsilogic@0: 		      width-scale, width-scale, shadowAngle - arc, 240);
lbajardsilogic@0: 	c = c.light(108);
lbajardsilogic@0:     }
lbajardsilogic@0: 
lbajardsilogic@0:     // Undraw the bottom part...
lbajardsilogic@0: 
lbajardsilogic@0:     pen.setColor(palette().background().color());
lbajardsilogic@0:     pen.setWidth(scale * 4);
lbajardsilogic@0:     paint.setPen(pen);
lbajardsilogic@0:     paint.drawArc(scale/2, scale/2,
lbajardsilogic@0: 		  width-scale, width-scale, -45 * 16, -92 * 16);
lbajardsilogic@0: 
lbajardsilogic@0:     // Scale ends...
lbajardsilogic@0: 
lbajardsilogic@0:     pen.setColor(palette().dark().color());
lbajardsilogic@0:     pen.setWidth(scale);
lbajardsilogic@0:     paint.setPen(pen);
lbajardsilogic@0:     for (int i = 0; i < numTicks; ++i) {
lbajardsilogic@0: 	if (i != 0 && i != numTicks - 1) continue;
lbajardsilogic@0: 	int div = numTicks;
lbajardsilogic@0: 	if (div > 1) --div;
lbajardsilogic@0: 	drawTick(paint, AUDIO_DIAL_MIN + (AUDIO_DIAL_MAX - AUDIO_DIAL_MIN) * i / div,
lbajardsilogic@0: 		 width, false);
lbajardsilogic@0:     }
lbajardsilogic@0: 
lbajardsilogic@0:     // Pointer notch...
lbajardsilogic@0: 
lbajardsilogic@0:     float hyp = float(width) / 2.0;
lbajardsilogic@0:     float len = hyp - indent;
lbajardsilogic@0:     --len;
lbajardsilogic@0: 
lbajardsilogic@0:     float x0 = hyp;
lbajardsilogic@0:     float y0 = hyp;
lbajardsilogic@0: 
lbajardsilogic@0:     float x = hyp - len * sin(angle);
lbajardsilogic@0:     float y = hyp + len * cos(angle);
lbajardsilogic@0: 
lbajardsilogic@0:     c = palette().dark().color();
lbajardsilogic@0:     pen.setColor(isEnabled() ? c.dark(130) : c);
lbajardsilogic@0:     pen.setWidth(scale * 2);
lbajardsilogic@0:     paint.setPen(pen);
lbajardsilogic@0:     paint.drawLine(int(x0), int(y0), int(x), int(y));
lbajardsilogic@0: 
lbajardsilogic@0:     paint.end();
lbajardsilogic@0: }
lbajardsilogic@0: 
lbajardsilogic@0: 
lbajardsilogic@0: void AudioDial::drawTick(QPainter &paint,
lbajardsilogic@0: 			 float angle, int size, bool internal)
lbajardsilogic@0: {
lbajardsilogic@0:     float hyp = float(size) / 2.0;
lbajardsilogic@0:     float x0 = hyp - (hyp - 1) * sin(angle);
lbajardsilogic@0:     float y0 = hyp + (hyp - 1) * cos(angle);
lbajardsilogic@0: 
lbajardsilogic@0: //    cerr << "drawTick: angle " << angle << ", size " << size << ", internal " << internal << endl;
lbajardsilogic@0:     
lbajardsilogic@0:     if (internal) {
lbajardsilogic@0: 
lbajardsilogic@0: 	float len = hyp / 4;
lbajardsilogic@0: 	float x1 = hyp - (hyp - len) * sin(angle);
lbajardsilogic@0: 	float y1 = hyp + (hyp - len) * cos(angle);
lbajardsilogic@0: 		
lbajardsilogic@0: 	paint.drawLine(int(x0), int(y0), int(x1), int(y1));
lbajardsilogic@0: 
lbajardsilogic@0:     } else {
lbajardsilogic@0: 
lbajardsilogic@0: 	float len = hyp / 4;
lbajardsilogic@0: 	float x1 = hyp - (hyp + len) * sin(angle);
lbajardsilogic@0: 	float y1 = hyp + (hyp + len) * cos(angle);
lbajardsilogic@0: 
lbajardsilogic@0: 	paint.drawLine(int(x0), int(y0), int(x1), int(y1));
lbajardsilogic@0:     }
lbajardsilogic@0: }
lbajardsilogic@0: 
lbajardsilogic@0: 
lbajardsilogic@0: void AudioDial::setKnobColor(const QColor& color)
lbajardsilogic@0: {
lbajardsilogic@0:     m_knobColor = color;
lbajardsilogic@0:     update();
lbajardsilogic@0: }
lbajardsilogic@0: 
lbajardsilogic@0: 
lbajardsilogic@0: void AudioDial::setMeterColor(const QColor& color)
lbajardsilogic@0: {
lbajardsilogic@0:     m_meterColor = color;
lbajardsilogic@0:     update();
lbajardsilogic@0: }
lbajardsilogic@0: 
lbajardsilogic@0: 
lbajardsilogic@0: void AudioDial::setMouseDial(bool mouseDial)
lbajardsilogic@0: {
lbajardsilogic@0:     m_mouseDial = mouseDial;
lbajardsilogic@0: }
lbajardsilogic@0: 
lbajardsilogic@0: 
lbajardsilogic@0: void AudioDial::setDefaultValue(int defaultValue)
lbajardsilogic@0: {
lbajardsilogic@0:     m_defaultValue = defaultValue;
lbajardsilogic@0: }
lbajardsilogic@0: 
lbajardsilogic@0: 
lbajardsilogic@0: void AudioDial::setValue(int value)
lbajardsilogic@0: {
lbajardsilogic@0:     QDial::setValue(value);
lbajardsilogic@0:     updateMappedValue(value);
lbajardsilogic@0: }
lbajardsilogic@0: 
lbajardsilogic@0: 
lbajardsilogic@0: void AudioDial::setMappedValue(float mappedValue)
lbajardsilogic@0: {
lbajardsilogic@0:     if (m_rangeMapper) {
lbajardsilogic@0:         int newPosition = m_rangeMapper->getPositionForValue(mappedValue);
lbajardsilogic@0:         bool changed = (m_mappedValue != mappedValue);
lbajardsilogic@0:         m_mappedValue = mappedValue;
lbajardsilogic@0:         m_noMappedUpdate = true;
lbajardsilogic@0:         std::cerr << "AudioDial::setMappedValue(" << mappedValue << "): new position is " << newPosition << std::endl;
lbajardsilogic@0:         if (newPosition != value()) {
lbajardsilogic@0:             setValue(newPosition);
lbajardsilogic@0:         } else if (changed) {
lbajardsilogic@0:             emit valueChanged(newPosition);
lbajardsilogic@0:         }
lbajardsilogic@0:         m_noMappedUpdate = false;
lbajardsilogic@0:     } else {
lbajardsilogic@0:         setValue(int(mappedValue));
lbajardsilogic@0:     }
lbajardsilogic@0: }
lbajardsilogic@0: 
lbajardsilogic@0: 
lbajardsilogic@0: void AudioDial::setShowToolTip(bool show)
lbajardsilogic@0: {
lbajardsilogic@0:     m_showTooltip = show;
lbajardsilogic@0:     m_noMappedUpdate = true;
lbajardsilogic@0:     updateMappedValue(value());
lbajardsilogic@0:     m_noMappedUpdate = false;
lbajardsilogic@0: }
lbajardsilogic@0: 
lbajardsilogic@0: 
lbajardsilogic@0: float AudioDial::mappedValue() const
lbajardsilogic@0: {
lbajardsilogic@0:     if (m_rangeMapper) {
lbajardsilogic@0:         std::cerr << "AudioDial::mappedValue(): value = " << value() << ", mappedValue = " << m_mappedValue << std::endl;
lbajardsilogic@0:         return m_mappedValue;
lbajardsilogic@0:     }
lbajardsilogic@0:     return value();
lbajardsilogic@0: }
lbajardsilogic@0: 
lbajardsilogic@0: 
lbajardsilogic@0: void AudioDial::updateMappedValue(int value)
lbajardsilogic@0: {
lbajardsilogic@0:     if (!m_noMappedUpdate) {
lbajardsilogic@0:         if (m_rangeMapper) {
lbajardsilogic@0:             m_mappedValue = m_rangeMapper->getValueForPosition(value);
lbajardsilogic@0:         } else {
lbajardsilogic@0:             m_mappedValue = value;
lbajardsilogic@0:         }
lbajardsilogic@0:     }
lbajardsilogic@0: 
lbajardsilogic@0:     if (m_showTooltip) {
lbajardsilogic@0:         QString name = objectName();
lbajardsilogic@0:         QString unit = "";
lbajardsilogic@0:         QString text;
lbajardsilogic@0:         if (m_rangeMapper) unit = m_rangeMapper->getUnit();
lbajardsilogic@0:         if (name != "") {
lbajardsilogic@0:             text = tr("%1: %2%3").arg(name).arg(m_mappedValue).arg(unit);
lbajardsilogic@0:         } else {
lbajardsilogic@0:             text = tr("%2%3").arg(m_mappedValue).arg(unit);
lbajardsilogic@0:         }
lbajardsilogic@0:         setToolTip(text);
lbajardsilogic@0:     }
lbajardsilogic@0: }
lbajardsilogic@0: 
lbajardsilogic@0: 
lbajardsilogic@0: // Alternate mouse behavior event handlers.
lbajardsilogic@0: void AudioDial::mousePressEvent(QMouseEvent *mouseEvent)
lbajardsilogic@0: {
lbajardsilogic@0:     if (m_mouseDial) {
lbajardsilogic@0: 	QDial::mousePressEvent(mouseEvent);
lbajardsilogic@0:     } else if (mouseEvent->button() == Qt::MidButton ||
lbajardsilogic@0:                ((mouseEvent->button() == Qt::LeftButton) &&
lbajardsilogic@0:                 (mouseEvent->modifiers() & Qt::ControlModifier))) {
lbajardsilogic@0: 	int dv = m_defaultValue;
lbajardsilogic@0: 	if (dv < minimum()) dv = minimum();
lbajardsilogic@0: 	if (dv > maximum()) dv = maximum();
lbajardsilogic@0: 	setValue(m_defaultValue);
lbajardsilogic@0:     } else if (mouseEvent->button() == Qt::LeftButton) {
lbajardsilogic@0: 	m_mousePressed = true;
lbajardsilogic@0: 	m_posMouse = mouseEvent->pos();
lbajardsilogic@0:     }
lbajardsilogic@0: }
lbajardsilogic@0: 
lbajardsilogic@0: 
lbajardsilogic@0: void AudioDial::mouseDoubleClickEvent(QMouseEvent *mouseEvent)
lbajardsilogic@0: {
lbajardsilogic@0:     //!!! needs a common base class with Thumbwheel
lbajardsilogic@0: 
lbajardsilogic@0:     if (m_mouseDial) {
lbajardsilogic@0: 	QDial::mouseDoubleClickEvent(mouseEvent);
lbajardsilogic@0:     } else if (mouseEvent->button() != Qt::LeftButton) {
lbajardsilogic@0:         return;
lbajardsilogic@0:     }
lbajardsilogic@0: 
lbajardsilogic@0:     bool ok = false;
lbajardsilogic@0: 
lbajardsilogic@0:     if (m_rangeMapper) {
lbajardsilogic@0:         
lbajardsilogic@0:         float min = m_rangeMapper->getValueForPosition(minimum());
lbajardsilogic@0:         float max = m_rangeMapper->getValueForPosition(maximum());
lbajardsilogic@0:         
lbajardsilogic@0:         if (min > max) { 
lbajardsilogic@0:             float tmp = min;
lbajardsilogic@0:             min = max;
lbajardsilogic@0:             max = tmp;
lbajardsilogic@0:         }
lbajardsilogic@0: 
lbajardsilogic@0:         QString unit = m_rangeMapper->getUnit();
lbajardsilogic@0:         
lbajardsilogic@0:         QString text;
lbajardsilogic@0:         if (objectName() != "") {
lbajardsilogic@0:             if (unit != "") {
lbajardsilogic@0:                 text = tr("New value for %1, from %2 to %3 %4:")
lbajardsilogic@0:                     .arg(objectName()).arg(min).arg(max).arg(unit);
lbajardsilogic@0:             } else {
lbajardsilogic@0:                 text = tr("New value for %1, from %2 to %3:")
lbajardsilogic@0:                     .arg(objectName()).arg(min).arg(max);
lbajardsilogic@0:             }
lbajardsilogic@0:         } else {
lbajardsilogic@0:             if (unit != "") {
lbajardsilogic@0:                 text = tr("Enter a new value from %1 to %2 %3:")
lbajardsilogic@0:                     .arg(min).arg(max).arg(unit);
lbajardsilogic@0:             } else {
lbajardsilogic@0:                 text = tr("Enter a new value from %1 to %2:")
lbajardsilogic@0:                     .arg(min).arg(max);
lbajardsilogic@0:             }
lbajardsilogic@0:         }
lbajardsilogic@0:         
lbajardsilogic@0:         float newValue = QInputDialog::getDouble
lbajardsilogic@0:             (this,
lbajardsilogic@0:              tr("Enter new value"),
lbajardsilogic@0:              text,
lbajardsilogic@0:              m_mappedValue,
lbajardsilogic@0:              min,
lbajardsilogic@0:              max,
lbajardsilogic@0:              4, 
lbajardsilogic@0:              &ok);
lbajardsilogic@0:         
lbajardsilogic@0:         if (ok) {
lbajardsilogic@0:             setMappedValue(newValue);
lbajardsilogic@0:         }
lbajardsilogic@0:         
lbajardsilogic@0:     } else {
lbajardsilogic@0:         
lbajardsilogic@0:         int newPosition = QInputDialog::getInteger
lbajardsilogic@0:             (this,
lbajardsilogic@0:              tr("Enter new value"),
lbajardsilogic@0:              tr("Enter a new value from %1 to %2:")
lbajardsilogic@0:              .arg(minimum()).arg(maximum()),
lbajardsilogic@0:              value(), minimum(), maximum(), pageStep(), &ok);
lbajardsilogic@0:         
lbajardsilogic@0:         if (ok) {
lbajardsilogic@0:             setValue(newPosition);
lbajardsilogic@0:         }
lbajardsilogic@0:     }
lbajardsilogic@0: }
lbajardsilogic@0: 
lbajardsilogic@0: 
lbajardsilogic@0: void AudioDial::mouseMoveEvent(QMouseEvent *mouseEvent)
lbajardsilogic@0: {
lbajardsilogic@0:     if (m_mouseDial) {
lbajardsilogic@0: 	QDial::mouseMoveEvent(mouseEvent);
lbajardsilogic@0:     } else if (m_mousePressed) {
lbajardsilogic@0: 	const QPoint& posMouse = mouseEvent->pos();
lbajardsilogic@0: 	int v = QDial::value()
lbajardsilogic@0: 	    + (posMouse.x() - m_posMouse.x())
lbajardsilogic@0: 	    + (m_posMouse.y() - posMouse.y());
lbajardsilogic@0: 	if (v > QDial::maximum())
lbajardsilogic@0: 	    v = QDial::maximum();
lbajardsilogic@0: 	else
lbajardsilogic@0: 	    if (v < QDial::minimum())
lbajardsilogic@0: 		v = QDial::minimum();
lbajardsilogic@0: 	m_posMouse = posMouse;
lbajardsilogic@0: 	QDial::setValue(v);
lbajardsilogic@0:     }
lbajardsilogic@0: }
lbajardsilogic@0: 
lbajardsilogic@0: 
lbajardsilogic@0: void AudioDial::mouseReleaseEvent(QMouseEvent *mouseEvent)
lbajardsilogic@0: {
lbajardsilogic@0:     if (m_mouseDial) {
lbajardsilogic@0: 	QDial::mouseReleaseEvent(mouseEvent);
lbajardsilogic@0:     } else if (m_mousePressed) {
lbajardsilogic@0: 	m_mousePressed = false;
lbajardsilogic@0:     }
lbajardsilogic@0: }
lbajardsilogic@0: 
lbajardsilogic@0: void
lbajardsilogic@0: AudioDial::enterEvent(QEvent *e)
lbajardsilogic@0: {
lbajardsilogic@0:     QDial::enterEvent(e);
lbajardsilogic@0:     emit mouseEntered();
lbajardsilogic@0: }
lbajardsilogic@0: 
lbajardsilogic@0: void
lbajardsilogic@0: AudioDial::leaveEvent(QEvent *e)
lbajardsilogic@0: {
lbajardsilogic@0:     QDial::enterEvent(e);
lbajardsilogic@0:     emit mouseLeft();
lbajardsilogic@0: }
lbajardsilogic@0: