Mercurial > hg > svgui
view widgets/IconLoader.cpp @ 582:bde4aa56862b
Added tag sv_v1.8 for changeset c9d6cf9c51c8
author | Chris Cannam |
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date | Thu, 07 Apr 2011 15:20:12 +0100 |
parents | 4ca7562dd246 |
children | e4773943c9c1 |
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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 2007 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 "IconLoader.h" #include <QPixmap> #include <QApplication> #include <QPainter> #include <QPalette> static const char *autoInvertExceptions[] = { // These are the icons that look OK in their default colours, even // in a colour scheme with a black background. (They may also be // icons that would look worse if we tried to auto-invert them.) // If we have icons that look bad when auto-inverted but that are // not suitable for use without being inverted, we'll need to // supply inverted versions -- the loader will load xx_inverse.png // in preference to xx.png if a dark background is found.) "fileclose", "filenew-22", "filenew", "fileopen-22", "fileopen", "fileopenaudio", "fileopensession", "filesave-22", "filesave", "filesaveas-22", "filesaveas", "help", "editcut", "editcopy", "editpaste", "editdelete", "exit", "zoom-fit", "zoom-in", "zoom-out", "zoom" }; QIcon IconLoader::load(QString name) { QPixmap pmap(loadPixmap(name)); if (pmap.isNull()) return QIcon(); else return QIcon(pmap); } QPixmap IconLoader::loadPixmap(QString name) { QColor bg = QApplication::palette().window().color(); if (bg.red() + bg.green() + bg.blue() > 384) { // light background QPixmap pmap(QString(":icons/%1").arg(name)); if (pmap.isNull()) { pmap = QPixmap(QString(":icons/%1.png").arg(name)); } return pmap; } QPixmap pmap(QString(":icons/%1").arg(name)); if (pmap.isNull()) { pmap = QPixmap(QString(":icons/%1_inverse.png").arg(name)); if (pmap.isNull()) { pmap = QPixmap(QString(":icons/%1.png").arg(name)); } } if (pmap.isNull()) return pmap; for (int i = 0; i < sizeof(autoInvertExceptions)/ sizeof(autoInvertExceptions[0]); ++i) { if (autoInvertExceptions[i] == name) { return pmap; } } // No suitable inverted icon found for black background; try to // auto-invert the default one QImage img = pmap.toImage().convertToFormat(QImage::Format_ARGB32); for (int y = 0; y < img.height(); ++y) { for (int x = 0; x < img.width(); ++x) { QRgb rgba = img.pixel(x, y); QColor colour = QColor (qRed(rgba), qGreen(rgba), qBlue(rgba), qAlpha(rgba)); int alpha = colour.alpha(); if (colour.saturation() < 5 && colour.alpha() > 10) { colour.setHsv(colour.hue(), colour.saturation(), 255 - colour.value()); colour.setAlpha(alpha); img.setPixel(x, y, colour.rgba()); } } } pmap = QPixmap::fromImage(img); return pmap; }