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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Qt Software Information (qt-info@nokia.com)
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the either Technology Preview License Agreement or the
** Beta Release License Agreement.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain
** additional rights. These rights are described in the Nokia Qt LGPL
** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at qt-sales@nokia.com.
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QDESKTOPICON_P_H
#define QDESKTOPICON_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include <QtGui/QIcon>
#include <QtGui/QIconEngine>
#include <QtGui/QPixmapCache>
#include <private/qicon_p.h>
#include <private/qfactoryloader_p.h>
QT_BEGIN_NAMESPACE
class QIconLoader;
struct QIconDirInfo
{
enum Type { Fixed, Scalable, Threshold };
QIconDirInfo(const QString &_path = QString()) :
path(_path),
size(0),
maxSize(0),
minSize(0),
threshold(0),
type(Threshold) {}
QString path;
short size;
short maxSize;
short minSize;
short threshold;
Type type : 4;
};
class QIconLoaderEngineEntry
{
public:
virtual QPixmap pixmap(const QSize &size,
QIcon::Mode mode,
QIcon::State state) = 0;
QString filename;
QIconDirInfo dir;
static int count;
};
struct ScalableEntry : public QIconLoaderEngineEntry
{
QPixmap pixmap(const QSize &size, QIcon::Mode mode, QIcon::State state);
QIcon svgIcon;
};
struct PixmapEntry : public QIconLoaderEngineEntry
{
QPixmap pixmap(const QSize &size, QIcon::Mode mode, QIcon::State state);
QPixmap basePixmap;
};
typedef QList<QIconLoaderEngineEntry*> QThemeIconEntries;
class QIconLoaderEngine : public QIconEngineV2
{
public:
QIconLoaderEngine(const QString& iconName = QString());
~QIconLoaderEngine();
void paint(QPainter *painter, const QRect &rect, QIcon::Mode mode, QIcon::State state);
QPixmap pixmap(const QSize &size, QIcon::Mode mode, QIcon::State state);
QSize actualSize(const QSize &size, QIcon::Mode mode, QIcon::State state);
QIconEngineV2 *clone() const;
bool read(QDataStream &in);
bool write(QDataStream &out) const;
private:
QString key() const;
bool hasIcon() const;
void ensureLoaded();
void virtual_hook(int id, void *data);
QIconLoaderEngineEntry *entryForSize(const QSize &size);
QIconLoaderEngine(const QIconLoaderEngine &other);
QThemeIconEntries m_entries;
QString m_iconName;
uint m_key;
friend class QIconLoader;
};
class QIconTheme
{
public:
QIconTheme(const QString &name);
QIconTheme() : m_valid(false) {};
QStringList parents() { return m_parents; }
QList <QIconDirInfo> keyList() { return m_keyList; }
QString contentDir() { return m_contentDir; }
bool isValid() { return m_valid; }
private:
QString m_contentDir;
QList <QIconDirInfo> m_keyList;
QStringList m_parents;
bool m_valid;
};
class QIconLoader : public QObject
{
public:
QIconLoader();
QThemeIconEntries loadIcon(const QString &iconName) const;
uint themeKey() const { return m_themeKey; }
QString themeName() const { return m_userTheme.isEmpty() ? m_systemTheme : m_userTheme; }
void setThemeName(const QString &themeName);
QIconTheme theme() { return themeList.value(themeName()); }
void setThemeSearchPath(const QStringList &searchPaths);
QStringList themeSearchPaths() const;
QIconDirInfo dirInfo(int dirindex);
static QIconLoader *instance();
void updateSystemTheme();
void invalidateKey() { m_themeKey++; }
private:
QThemeIconEntries findIconHelper(const QString &themeName,
const QString &iconName,
QStringList &visited) const;
uint m_themeKey;
bool m_supportsSvg;
mutable QString m_userTheme;
mutable QString m_systemTheme;
mutable QStringList m_iconDirs;
mutable QHash <QString, QIconTheme> themeList;
};
QT_END_NAMESPACE
#endif // QDESKTOPICON_P_H
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