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view main/SVSplash.cpp @ 2316:05dadb3efb57
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author | Chris Cannam |
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date | Wed, 11 Sep 2019 13:36:51 +0100 |
parents | eb7f4579e5cc |
children | 7e70382e6ece |
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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 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 "SVSplash.h" #include "../version.h" #include <QPainter> #include <QApplication> #include <QScreen> #include <QSvgRenderer> #include <cmath> #include <iostream> using namespace std; SVSplash::SVSplash() { setWindowFlags(windowFlags() | Qt::WindowStaysOnTopHint); QPixmap *p1 = new QPixmap(":icons/scalable/sv-splash.png"); int w = p1->width(), h = p1->height(); QScreen *screen = QApplication::primaryScreen(); QRect desk = screen->availableGeometry(); double dpratio = devicePixelRatio(); double widthMultiple = double(desk.width()) / double(w); int sw = w, sh = h; if (widthMultiple > 2.5 || dpratio > 1.0) { // Hi-dpi either via pixel doubling or simply via lots of // pixels double factor = widthMultiple / 2.5; if (factor < 1.0) factor = 1.0; sw = int(floor(w * factor)); sh = int(floor(h * factor)); delete p1; m_pixmap = new QPixmap(int(floor(sw * dpratio)), int(floor(sh * dpratio))); // cerr << "pixmap size = " << m_pixmap->width() << " * " // << m_pixmap->height() << endl; m_pixmap->fill(Qt::red); QSvgRenderer renderer(QString(":icons/scalable/sv-splash.svg")); QPainter painter(m_pixmap); renderer.render(&painter); painter.end(); } else { // The "low dpi" case m_pixmap = p1; } setFixedWidth(sw); setFixedHeight(sh); setGeometry(desk.x() + desk.width()/2 - sw/2, desk.y() + desk.height()/2 - sh/2, sw, sh); } SVSplash::~SVSplash() { delete m_pixmap; } void SVSplash::finishSplash(QWidget *w) { finish(w); } void SVSplash::drawContents(QPainter *painter) { // 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" painter->drawPixmap(rect(), *m_pixmap, m_pixmap->rect()); QString text = QString("v%1").arg(SV_VERSION); painter->setPen(Qt::black); painter->drawText (width() - painter->fontMetrics().width(text) - (width()/50), (width()/70) + painter->fontMetrics().ascent(), text); }