Chris@690: /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
Chris@690: 
Chris@690: /*
Chris@690:     Sonic Visualiser
Chris@690:     An audio file viewer and annotation editor.
Chris@690:     Centre for Digital Music, Queen Mary, University of London.
Chris@690:     This file copyright 2006-2013 Chris Cannam and QMUL.
Chris@690:     
Chris@690:     This program is free software; you can redistribute it and/or
Chris@690:     modify it under the terms of the GNU General Public License as
Chris@690:     published by the Free Software Foundation; either version 2 of the
Chris@690:     License, or (at your option) any later version.  See the file
Chris@690:     COPYING included with this distribution for more information.
Chris@690: */
Chris@690: 
Chris@690: #include "PianoScale.h"
Chris@690: 
Chris@690: #include <QPainter>
Chris@690: 
Chris@690: #include <cmath>
Chris@690: 
Chris@690: #include "base/Pitch.h"
Chris@690: 
Chris@918: #include "view/LayerGeometryProvider.h"
Chris@690: 
Chris@690: void
Chris@918: PianoScale::paintPianoVertical(LayerGeometryProvider *v,
Chris@690: 			       QPainter &paint,
Chris@690: 			       QRect r,
Chris@904: 			       double minf,
Chris@904: 			       double maxf)
Chris@690: {
Chris@690:     int x0 = r.x(), y0 = r.y(), x1 = r.x() + r.width(), y1 = r.y() + r.height();
Chris@690: 
Chris@690:     paint.drawLine(x0, y0, x0, y1);
Chris@690: 
Chris@690:     int py = y1, ppy = y1;
Chris@690:     paint.setBrush(paint.pen().color());
Chris@690: 
Chris@690:     for (int i = 0; i < 128; ++i) {
Chris@690: 
Chris@904: 	double f = Pitch::getFrequencyForPitch(i);
Chris@905: 	int y = int(lrint(v->getYForFrequency(f, minf, maxf, true)));
Chris@690: 
Chris@690: 	if (y < y0 - 2) break;
Chris@690: 	if (y > y1 + 2) {
Chris@690: 	    continue;
Chris@690: 	}
Chris@690: 	
Chris@690: 	int n = (i % 12);
Chris@690: 	
Chris@690: 	if (n == 1) {
Chris@690: 	    // C# -- fill the C from here
Chris@690: 	    QColor col = Qt::gray;
Chris@690: 	    if (i == 61) { // filling middle C
Chris@690: 		col = Qt::blue;
Chris@690: 		col = col.light(150);
Chris@690: 	    }
Chris@690: 	    if (ppy - y > 2) {
Chris@690: 		paint.fillRect(x0 + 1,
Chris@690: 			       y,
Chris@690: 			       x1 - x0,
Chris@690: 			       (py + ppy) / 2 - y,
Chris@690: 			       col);
Chris@690: 	    }
Chris@690: 	}
Chris@690: 	
Chris@690: 	if (n == 1 || n == 3 || n == 6 || n == 8 || n == 10) {
Chris@690: 	    // black notes
Chris@690: 	    paint.drawLine(x0 + 1, y, x1, y);
Chris@690: 	    int rh = ((py - y) / 4) * 2;
Chris@690: 	    if (rh < 2) rh = 2;
Chris@690: 	    paint.drawRect(x0 + 1, y - (py-y)/4, (x1 - x0) / 2, rh);
Chris@690: 	} else if (n == 0 || n == 5) {
Chris@690: 	    // C, F
Chris@690: 	    if (py < y1) {
Chris@690: 		paint.drawLine(x0 + 1, (y + py) / 2, x1, (y + py) / 2);
Chris@690: 	    }
Chris@690: 	}
Chris@690: 	
Chris@690: 	ppy = py;
Chris@690: 	py = y;
Chris@690:     }
Chris@690: }
Chris@690: