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//=============================================================================
// Awl
// Audio Widget Library
// $Id:$
//
// Copyright (C) 1999-2011 by Werner Schweer and others
//
// 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; version 2 of
// the License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
//=============================================================================
#include "fastlog.h"
#include "midimslider.h"
#include <QPainter>
#include <QPaintEvent>
namespace Awl {
//---------------------------------------------------------
// MidiMeterSlider
//---------------------------------------------------------
MidiMeterSlider::MidiMeterSlider(QWidget* parent)
: Slider(parent)
{
setRange(0.0f, 127.0f);
setLineStep(2);
setPageStep(4);
setScaleWidth(7);
_meterWidth = _scaleWidth * 3;
meterval = 0.0f;
}
//---------------------------------------------------------
// setMeterVal
// v - 0.0 < 1.0
//---------------------------------------------------------
void MidiMeterSlider::setMeterVal(double v)
{
if (v < 0.001)
v = .0f;
if (meterval != v) {
meterval = v;
update();
}
}
//---------------------------------------------------------
// mouseDoubleClickEvent
//---------------------------------------------------------
void MidiMeterSlider::mouseDoubleClickEvent(QMouseEvent*)
{
_value = _minValue;
valueChange();
update();
}
//---------------------------------------------------------
// drawScale
//---------------------------------------------------------
void MidiMeterSlider::paintEvent(QPaintEvent* ev)
{
int pixel = height() - sliderSize().height();
double range = maxValue() - minValue();
int ppos = int(pixel * (_value - minValue()) / range);
if (_invert)
ppos = pixel - ppos;
QRect rr(ev->rect());
QPainter p(this);
QColor sc(isEnabled() ? _scaleColor : Qt::gray);
QColor svc(isEnabled() ? _scaleValueColor : Qt::gray);
p.setBrush(svc);
int h = height();
// int kw = sliderSize().width();
int kh = sliderSize().height();
//---------------------------------------------------
// draw meter
//---------------------------------------------------
int mw = _meterWidth;
int x = 0;
int y1 = kh / 2;
int y2 = h - (ppos + y1);
int y3 = h - y1;
int mh = h - kh;
p.setPen(Qt::white);
h = lrint(meterval * mh);
if (h < 0)
h = 0;
else if (h > mh)
h = mh;
//QColor qc;
//float v = 5.0/6.0 + 1.0/6.0 * meterval;
//qc.setHsvF(1.0/3.0, 1.0, (v<=1.0?v:1.0));
p.fillRect(x, y3-h, mw, h, QBrush(0x00ff00)); // green
//p.fillRect(x, y3-h, mw, h, QBrush(qc)); // green get a bit darker
p.fillRect(x, y1, mw, mh-h, QBrush(0x007000)); // dark green
x += mw;
//---------------------------------------------------
// draw scale
//---------------------------------------------------
// x += _scaleWidth/2;
// p.setPen(QPen(sc, _scaleWidth));
// p.drawLine(x, y1, x, y2);
// p.setPen(QPen(svc, _scaleWidth));
// p.drawLine(x, y2, x, y3);
p.fillRect(x, y1, _scaleWidth, y2-y1, sc);
p.fillRect(x, y2, _scaleWidth, y3-y2, svc);
//---------------------------------------------------
// draw slider
//---------------------------------------------------
x += _scaleWidth/2;
p.setPen(QPen(svc, 0));
p.translate(QPointF(x, y2));
p.setRenderHint(QPainter::Antialiasing, true);
p.drawPath(*points);
}
}
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