qBittorrent/src/iconprovider.cpp

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/*
* Bittorrent Client using Qt4 and libtorrent.
* Copyright (C) 2011 Christophe Dumez
*
* 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.
*
* Contact : chris@qbittorrent.org
*/
#include "iconprovider.h"
#include "preferences.h"
IconProvider* IconProvider::m_instance = 0;
IconProvider::IconProvider()
{
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#if defined(Q_WS_X11)
m_useSystemTheme = Preferences().useSystemIconTheme();
#endif
}
IconProvider * IconProvider::instance()
{
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if (!m_instance)
m_instance = new IconProvider;
return m_instance;
}
void IconProvider::drop()
{
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if (m_instance) {
delete m_instance;
m_instance = 0;
}
}
QIcon IconProvider::getIcon(const QString &iconId)
{
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#if defined(Q_WS_X11)
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if (m_useSystemTheme) {
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QIcon icon = QIcon::fromTheme(iconId, QIcon(":/Icons/oxygen/"+iconId+".png"));
icon = generateDifferentSizes(icon);
return icon;
}
#endif
return QIcon(":/Icons/oxygen/"+iconId+".png");
}
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#if defined(Q_WS_X11)
void IconProvider::useSystemIconTheme(bool enable)
{
m_useSystemTheme = enable;
}
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// Makes sure the icon is at least available in 16px and 24px size
// It scales the icon from the theme if necessary
// Otherwise, the UI looks broken if the icon is not available
// in the correct size.
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QIcon IconProvider::generateDifferentSizes(const QIcon& icon)
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{
QIcon new_icon;
QList<QSize> required_sizes;
required_sizes << QSize(16, 16) << QSize(24, 24);
QList<QIcon::Mode> modes;
modes << QIcon::Normal << QIcon::Active << QIcon::Selected << QIcon::Disabled;
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foreach (const QSize& size, required_sizes) {
foreach (QIcon::Mode mode, modes) {
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QPixmap pixoff = icon.pixmap(size, mode, QIcon::Off);
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if (pixoff.height() > size.height())
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pixoff = pixoff.scaled(size, Qt::KeepAspectRatio, Qt::SmoothTransformation);
new_icon.addPixmap(pixoff, mode, QIcon::Off);
QPixmap pixon = icon.pixmap(size, mode, QIcon::On);
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if (pixon.height() > size.height())
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pixon = pixoff.scaled(size, Qt::KeepAspectRatio, Qt::SmoothTransformation);
new_icon.addPixmap(pixon, mode, QIcon::On);
}
}
return new_icon;
}
#endif
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QString IconProvider::getIconPath(const QString& iconId)
{
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#if defined(Q_WS_X11)
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if (m_useSystemTheme) {
QString path = QDir::temp().absoluteFilePath(iconId+".png");
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if (!QFile::exists(path)) {
const QIcon icon = QIcon::fromTheme(iconId);
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if (icon.isNull()) return ":/Icons/oxygen/"+iconId+".png";
QPixmap px = icon.pixmap(32);
px.save(path);
}
return path;
}
#endif
return ":/Icons/oxygen/"+iconId+".png";
}