Mercurial > hg > svgui
view layer/PianoScale.cpp @ 1441:8d5bf4ab98ef
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author | Chris Cannam |
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date | Wed, 24 Apr 2019 11:29:53 +0100 |
parents | b4cb11ca8233 |
children | f2525e6cbdf1 |
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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 "LayerGeometryProvider.h" #include "HorizontalScaleProvider.h" #include <iostream> using namespace std; void PianoScale::paintPianoVertical(LayerGeometryProvider *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; } } void PianoScale::paintPianoHorizontal(LayerGeometryProvider *v, const HorizontalScaleProvider *p, QPainter &paint, QRect r) { int x0 = r.x(), y0 = r.y(), x1 = r.x() + r.width(), y1 = r.y() + r.height(); paint.drawLine(x0, y0, x1, y0); int px = x0, ppx = x0; paint.setBrush(paint.pen().color()); for (int i = 0; i < 128; ++i) { double f = Pitch::getFrequencyForPitch(i); int x = int(lrint(p->getXForFrequency(v, f))); if (i == 0) { px = ppx = x; } if (i == 1) { ppx = px - (x - px); } if (x < x0) { ppx = px; px = x; continue; } if (x > x1) { break; } 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 (x - ppx > 2) { paint.fillRect((px + ppx) / 2 + 1, y0 + 1, x - (px + ppx) / 2 - 1, y1 - y0, col); } } if (n == 1 || n == 3 || n == 6 || n == 8 || n == 10) { // black notes paint.drawLine(x, y0, x, y1); int rw = int(lrint(double(x - px) / 4) * 2); if (rw < 2) rw = 2; paint.drawRect(x - rw/2, (y0 + y1) / 2, rw, (y1 - y0) / 2); } else if (n == 0 || n == 5) { // C, F if (px < x1) { paint.drawLine((x + px) / 2, y0, (x + px) / 2, y1); } } ppx = px; px = x; } }