Mercurial > hg > sonic-visualiser
changeset 954:74b3eaa684d3 scalable-icons
Add splash screen code
author | Chris Cannam |
---|---|
date | Wed, 06 May 2015 13:02:28 +0100 (2015-05-06) |
parents | 4a8f87c175f7 |
children | 76b46442fc2d |
files | main/SVSplash.cpp main/SVSplash.h |
diffstat | 2 files changed, 137 insertions(+), 0 deletions(-) [+] |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/main/SVSplash.cpp Wed May 06 13:02:28 2015 +0100 @@ -0,0 +1,98 @@ +/* -*- 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 <QDesktopWidget> +#include <QSvgRenderer> + +#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(); + QRect desk = QApplication::desktop()->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) +{ + painter->drawPixmap(rect(), *m_pixmap, m_pixmap->rect()); + QString text = QString("v%1").arg(SV_VERSION); + painter->drawText + (width() - painter->fontMetrics().width(text) - (width()/50), + (width()/50) + painter->fontMetrics().ascent(), + text); +} + +
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/main/SVSplash.h Wed May 06 13:02:28 2015 +0100 @@ -0,0 +1,39 @@ +/* -*- 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. +*/ + +#ifndef SV_SPLASH_H +#define SV_SPLASH_H + +#include <QSplashScreen> + +class QPixmap; + +class SVSplash : public QSplashScreen +{ + Q_OBJECT + +public: + SVSplash(); + virtual ~SVSplash(); + +public slots: + void finishSplash(QWidget *); + +protected: + void drawContents(QPainter *); + QPixmap *m_pixmap; +}; + +#endif +