Mercurial > hg > svgui
view layer/HorizontalFrequencyScale.cpp @ 1524:4fab699536f9
Merge
author | Chris Cannam |
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date | Wed, 25 Sep 2019 14:11:42 +0100 |
parents | f2525e6cbdf1 |
children |
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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 2006-2018 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 "HorizontalFrequencyScale.h" #include "HorizontalScaleProvider.h" #include "LayerGeometryProvider.h" #include "base/ScaleTickIntervals.h" #include <QPainter> #include <cmath> int HorizontalFrequencyScale::getHeight(LayerGeometryProvider *, QPainter &paint) { return paint.fontMetrics().height() + 10; } void HorizontalFrequencyScale::paintScale(LayerGeometryProvider *v, const HorizontalScaleProvider *p, QPainter &paint, QRect r, bool logarithmic) { int x0 = r.x(), y0 = r.y(), x1 = r.x() + r.width(), y1 = r.y() + r.height(); paint.drawLine(x0, y0, x1, y0); double f0 = p->getFrequencyForX(v, x0 ? x0 : 1); double f1 = p->getFrequencyForX(v, x1); int n = 20; auto ticks = logarithmic ? ScaleTickIntervals::logarithmic({ f0, f1, n }) : ScaleTickIntervals::linear({ f0, f1, n }); n = int(ticks.size()); int marginx = -1; for (int i = 0; i < n; ++i) { // Qt 5.13 deprecates QFontMetrics::width(), but its suggested // replacement (horizontalAdvance) was only added in Qt 5.11 // which is too new for us #pragma GCC diagnostic ignored "-Wdeprecated-declarations" double val = ticks[i].value; QString label = QString::fromStdString(ticks[i].label); int tw = paint.fontMetrics().width(label); int x = int(round(p->getXForFrequency(v, val))); if (x < marginx) continue; //!!! todo: pixel scaling (here & elsewhere in these classes) paint.drawLine(x, y0, x, y1); paint.drawText(x + 5, y0 + paint.fontMetrics().ascent() + 5, label); marginx = x + tw + 10; } }