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/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
/*
Sonic Visualiser
An audio file viewer and annotation editor.
Centre for Digital Music, Queen Mary, University of London.
This file copyright 2006-2013 Chris Cannam and QMUL.
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.
*/
#include "PianoScale.h"
#include <QPainter>
#include <cmath>
#include "base/Pitch.h"
#include "view/View.h"
void
PianoScale::paintPianoVertical(View *v,
QPainter &paint,
QRect r,
double minf,
double maxf)
{
int x0 = r.x(), y0 = r.y(), x1 = r.x() + r.width(), y1 = r.y() + r.height();
paint.drawLine(x0, y0, x0, y1);
int py = y1, ppy = y1;
paint.setBrush(paint.pen().color());
for (int i = 0; i < 128; ++i) {
double f = Pitch::getFrequencyForPitch(i);
int y = int(lrint(v->getYForFrequency(f, minf, maxf, true)));
if (y < y0 - 2) break;
if (y > y1 + 2) {
continue;
}
int n = (i % 12);
if (n == 1) {
// C# -- fill the C from here
QColor col = Qt::gray;
if (i == 61) { // filling middle C
col = Qt::blue;
col = col.light(150);
}
if (ppy - y > 2) {
paint.fillRect(x0 + 1,
y,
x1 - x0,
(py + ppy) / 2 - y,
col);
}
}
if (n == 1 || n == 3 || n == 6 || n == 8 || n == 10) {
// black notes
paint.drawLine(x0 + 1, y, x1, y);
int rh = ((py - y) / 4) * 2;
if (rh < 2) rh = 2;
paint.drawRect(x0 + 1, y - (py-y)/4, (x1 - x0) / 2, rh);
} else if (n == 0 || n == 5) {
// C, F
if (py < y1) {
paint.drawLine(x0 + 1, (y + py) / 2, x1, (y + py) / 2);
}
}
ppy = py;
py = y;
}
}
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