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@1077: #include "LayerGeometryProvider.h"
Chris@1276: #include "HorizontalScaleProvider.h"
Chris@690: 
Chris@1238: #include <iostream>
Chris@1238: using namespace std;
Chris@1238: 
Chris@690: void
Chris@918: PianoScale::paintPianoVertical(LayerGeometryProvider *v,
Chris@1266:                                QPainter &paint,
Chris@1266:                                QRect r,
Chris@1266:                                double minf,
Chris@1266:                                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@1266:         double f = Pitch::getFrequencyForPitch(i);
Chris@1266:         int y = int(lrint(v->getYForFrequency(f, minf, maxf, true)));
Chris@690: 
Chris@1266:         if (y < y0 - 2) break;
Chris@1266:         if (y > y1 + 2) {
Chris@1266:             continue;
Chris@1266:         }
Chris@1266:         
Chris@1266:         int n = (i % 12);
Chris@1266:         
Chris@1266:         if (n == 1) {
Chris@1266:             // C# -- fill the C from here
Chris@1266:             QColor col = Qt::gray;
Chris@1266:             if (i == 61) { // filling middle C
Chris@1266:                 col = Qt::blue;
Chris@1471:                 col = col.lighter(150);
Chris@1266:             }
Chris@1266:             if (ppy - y > 2) {
Chris@1266:                 paint.fillRect(x0 + 1,
Chris@1266:                                y,
Chris@1266:                                x1 - x0,
Chris@1266:                                (py + ppy) / 2 - y,
Chris@1266:                                col);
Chris@1266:             }
Chris@1266:         }
Chris@1266:         
Chris@1266:         if (n == 1 || n == 3 || n == 6 || n == 8 || n == 10) {
Chris@1266:             // black notes
Chris@1266:             paint.drawLine(x0 + 1, y, x1, y);
Chris@1266:             int rh = ((py - y) / 4) * 2;
Chris@1266:             if (rh < 2) rh = 2;
Chris@1266:             paint.drawRect(x0 + 1, y - (py-y)/4, (x1 - x0) / 2, rh);
Chris@1266:         } else if (n == 0 || n == 5) {
Chris@1266:             // C, F
Chris@1266:             if (py < y1) {
Chris@1266:                 paint.drawLine(x0 + 1, (y + py) / 2, x1, (y + py) / 2);
Chris@1266:             }
Chris@1266:         }
Chris@1266:         
Chris@1266:         ppy = py;
Chris@1266:         py = y;
Chris@690:     }
Chris@690: }
Chris@690: 
Chris@1238: void
Chris@1238: PianoScale::paintPianoHorizontal(LayerGeometryProvider *v,
Chris@1238:                                  const HorizontalScaleProvider *p,
Chris@1238:                                  QPainter &paint,
Chris@1238:                                  QRect r)
Chris@1238: {
Chris@1238:     int x0 = r.x(), y0 = r.y(), x1 = r.x() + r.width(), y1 = r.y() + r.height();
Chris@1238: 
Chris@1238:     paint.drawLine(x0, y0, x1, y0);
Chris@1238: 
Chris@1238:     int px = x0, ppx = x0;
Chris@1238:     paint.setBrush(paint.pen().color());
Chris@1238: 
Chris@1238:     for (int i = 0; i < 128; ++i) {
Chris@1238: 
Chris@1238:         double f = Pitch::getFrequencyForPitch(i);
Chris@1238:         int x = int(lrint(p->getXForFrequency(v, f)));
Chris@1238: 
Chris@1238:         if (i == 0) {
Chris@1238:             px = ppx = x;
Chris@1238:         }
Chris@1238:         if (i == 1) {
Chris@1238:             ppx = px - (x - px);
Chris@1238:         }
Chris@1238:         
Chris@1238:         if (x < x0) {
Chris@1238:             ppx = px;
Chris@1238:             px = x;
Chris@1238:             continue;
Chris@1238:         }
Chris@1238:         
Chris@1238:         if (x > x1) {
Chris@1238:             break;
Chris@1238:         }
Chris@1238: 
Chris@1238:         int n = (i % 12);
Chris@1238: 
Chris@1238:         if (n == 1) {
Chris@1238:             // C# -- fill the C from here
Chris@1238:             QColor col = Qt::gray;
Chris@1238:             if (i == 61) { // filling middle C
Chris@1238:                 col = Qt::blue;
Chris@1471:                 col = col.lighter(150);
Chris@1238:             }
Chris@1238:             if (x - ppx > 2) {
Chris@1238:                 paint.fillRect((px + ppx) / 2 + 1,
Chris@1238:                                y0 + 1,
Chris@1238:                                x - (px + ppx) / 2 - 1,
Chris@1238:                                y1 - y0,
Chris@1238:                                col);
Chris@1238:             }
Chris@1238:         }
Chris@1238: 
Chris@1238:         if (n == 1 || n == 3 || n == 6 || n == 8 || n == 10) {
Chris@1238:             // black notes
Chris@1238:             paint.drawLine(x, y0, x, y1);
Chris@1238:             int rw = int(lrint(double(x - px) / 4) * 2);
Chris@1238:             if (rw < 2) rw = 2;
Chris@1238:             paint.drawRect(x - rw/2, (y0 + y1) / 2, rw, (y1 - y0) / 2);
Chris@1238:         } else if (n == 0 || n == 5) {
Chris@1238:             // C, F
Chris@1238:             if (px < x1) {
Chris@1238:                 paint.drawLine((x + px) / 2, y0, (x + px) / 2, y1);
Chris@1238:             }
Chris@1238:         }
Chris@1238:         
Chris@1238:         ppx = px;
Chris@1238:         px = x;
Chris@1238:     }
Chris@1238: }
Chris@1238: 
Chris@1238: