qBittorrent/src/gui/guiiconprovider.cpp
2018-08-14 17:03:14 +08:00

121 lines
3.8 KiB
C++

/*
* Bittorrent Client using Qt and libtorrent.
* Copyright (C) 2015 Vladimir Golovnev <glassez@yandex.ru>
* Copyright (C) 2011 Christophe Dumez <chris@qbittorrent.org>
*
* 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.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* In addition, as a special exception, the copyright holders give permission to
* link this program with the OpenSSL project's "OpenSSL" library (or with
* modified versions of it that use the same license as the "OpenSSL" library),
* and distribute the linked executables. You must obey the GNU General Public
* License in all respects for all of the code used other than "OpenSSL". If you
* modify file(s), you may extend this exception to your version of the file(s),
* but you are not obligated to do so. If you do not wish to do so, delete this
* exception statement from your version.
*/
#include "guiiconprovider.h"
#include <QHash>
#include <QIcon>
#include <QVector>
#if (defined(Q_OS_UNIX) && !defined(Q_OS_MAC))
#include <QDir>
#include <QFile>
#endif
#include "base/preferences.h"
#include "base/utils/fs.h"
GuiIconProvider::GuiIconProvider(QObject *parent)
: IconProvider(parent)
{
configure();
connect(Preferences::instance(), &Preferences::changed, this, &GuiIconProvider::configure);
}
GuiIconProvider::~GuiIconProvider() = default;
void GuiIconProvider::initInstance()
{
if (!m_instance)
m_instance = new GuiIconProvider;
}
GuiIconProvider *GuiIconProvider::instance()
{
return static_cast<GuiIconProvider *>(m_instance);
}
QIcon GuiIconProvider::getIcon(const QString &iconId) const
{
return getIcon(iconId, iconId);
}
QIcon GuiIconProvider::getIcon(const QString &iconId, const QString &fallback) const
{
#if (defined(Q_OS_UNIX) && !defined(Q_OS_MAC))
if (m_useSystemTheme) {
QIcon icon = QIcon::fromTheme(iconId);
if (icon.name() != iconId)
icon = QIcon::fromTheme(fallback, QIcon(IconProvider::getIconPath(iconId)));
return icon;
}
#else
Q_UNUSED(fallback)
#endif
// cache to avoid rescaling svg icons
static QHash<QString, QIcon> iconCache;
const auto iter = iconCache.find(iconId);
if (iter != iconCache.end())
return *iter;
const QIcon icon {IconProvider::getIconPath(iconId)};
iconCache[iconId] = icon;
return icon;
}
QIcon GuiIconProvider::getFlagIcon(const QString &countryIsoCode) const
{
if (countryIsoCode.isEmpty()) return QIcon();
return QIcon(":/icons/flags/" + countryIsoCode.toLower() + ".svg");
}
QString GuiIconProvider::getIconPath(const QString &iconId) const
{
#if (defined(Q_OS_UNIX) && !defined(Q_OS_MAC))
if (m_useSystemTheme) {
QString path = Utils::Fs::tempPath() + iconId + ".png";
if (!QFile::exists(path)) {
const QIcon icon = QIcon::fromTheme(iconId);
if (!icon.isNull())
icon.pixmap(32).save(path);
else
path = IconProvider::getIconPath(iconId);
}
return path;
}
#endif
return IconProvider::getIconPath(iconId);
}
void GuiIconProvider::configure()
{
#if (defined(Q_OS_UNIX) && !defined(Q_OS_MAC))
m_useSystemTheme = Preferences::instance()->useSystemIconTheme();
#endif
}