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/*
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<one line to give the library's name and an idea of what it does.>
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Copyright (C) 2012 Hong Jen Yee (PCMan) <pcman.tw@gmail.com>
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef FM_ICONTHEME_H
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#define FM_ICONTHEME_H
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#include "libfmqtglobals.h"
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#include <QIcon>
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#include <QString>
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#include "libfm/fm.h"
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namespace Fm {
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// NOTE:
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// Qt seems to has its own QIcon pixmap caching mechanism internally.
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// Besides, it also caches QIcon objects created by QIcon::fromTheme().
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// So maybe we should not duplicate the work.
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// See http://qt.gitorious.org/qt/qt/blobs/4.8/src/gui/image/qicon.cpp
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// QPixmap QPixmapIconEngine::pixmap(const QSize &size, QIcon::Mode mode, QIcon::State state).
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// In addition, QPixmap is actually stored in X11 server, not client side.
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// Hence maybe we should not cache too many pixmaps, I guess?
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// Let's have Qt do its work and only translate GIcon to QIcon here.
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// Nice article about QPixmap from KDE: http://techbase.kde.org/Development/Tutorials/Graphics/Performance
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class LIBFM_QT_API IconTheme: public QObject {
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Q_OBJECT
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public:
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IconTheme();
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~IconTheme();
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static IconTheme* instance();
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static QIcon icon(FmIcon* fmicon);
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static QIcon icon(GIcon* gicon);
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static void checkChanged(); // check if current icon theme name is changed
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Q_SIGNALS:
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void changed(); // emitted when the name of current icon theme is changed
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protected:
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bool eventFilter(QObject *obj, QEvent *event);
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static QIcon convertFromGIcon(GIcon* gicon);
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static QIcon iconFromNames(const char * const * names);
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protected:
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QIcon fallbackIcon_;
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QString currentThemeName_;
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};
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}
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#endif // FM_ICONTHEME_H
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