xdg.cpp

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/**********************************************************************
 * LeechCraft - modular cross-platform feature rich internet client.
 * Copyright (C) 2006-2014  Georg Rudoy
 *
 * Boost Software License - Version 1.0 - August 17th, 2003
 *
 * Permission is hereby granted, free of charge, to any person or organization
 * obtaining a copy of the software and accompanying documentation covered by
 * this license (the "Software") to use, reproduce, display, distribute,
 * execute, and transmit the Software, and to prepare derivative works of the
 * Software, and to permit third-parties to whom the Software is furnished to
 * do so, all subject to the following:
 *
 * The copyright notices in the Software and this entire statement, including
 * the above license grant, this restriction and the following disclaimer,
 * must be included in all copies of the Software, in whole or in part, and
 * all derivative works of the Software, unless such copies or derivative
 * works are solely in the form of machine-executable object code generated by
 * a source language processor.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
 * SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
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 **********************************************************************/
 
#include "xdg.h"
#include <QIcon>
#include <QFile>
 
namespace LC
{
namespace Util
{
namespace XDG
{
    QIcon GetAppIcon (const QString& name)
    {
        return GetAppPixmap (name);
    }
 
    QPixmap GetAppPixmap (const QString& name)
    {
        const auto prefixes =
        {
            "/usr/share/pixmaps/",
            "/usr/local/share/pixmaps/"
        };
 
        const auto sizes = { "192", "128", "96", "72", "64", "48", "36", "32" };
        const QStringList themes
        {
            "/usr/local/share/icons/hicolor/",
            "/usr/share/icons/hicolor/"
        };
 
        for (auto ext : { ".png", ".svg", ".xpm", ".jpg", "" })
        {
            for (auto prefix : prefixes)
                if (QFile::exists (prefix + name + ext))
                    return { prefix + name + ext };
 
            for (auto themeDir : themes)
                for (const auto& size : sizes)
                {
                    const auto& str = themeDir + size + 'x' + size + "/apps/" + name + ext;
                    if (QFile::exists (str))
                        return { str };
                }
        }
 
        return {};
    }
}
}
}