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/****************************************************************************
**
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** 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 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#pragma once
#include <QtCore/qglobal.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 <QtCore/QHash>
#include <QtCore/QVector>
#include <QtCore/QTypeInfo>
namespace QtXdg
{
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 ~QIconLoaderEngineEntry()
{
}
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) Q_DECL_OVERRIDE;
QIcon svgIcon;
};
struct PixmapEntry : public QIconLoaderEngineEntry
{
QPixmap pixmap(const QSize &size, QIcon::Mode mode, QIcon::State state) Q_DECL_OVERRIDE;
QPixmap basePixmap;
};
typedef QList<QIconLoaderEngineEntry *> QThemeIconEntries;
// class QIconLoaderEngine : public QIconEngine
class QIconLoaderEngineFixed : public QIconEngine
{
public:
QIconLoaderEngineFixed(const QString &iconName = QString());
~QIconLoaderEngineFixed();
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);
QIconEngine *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);
QIconLoaderEngineFixed(const QIconLoaderEngineFixed &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;
}
QVector<QIconDirInfo> keyList()
{
return m_keyList;
}
QString contentDir()
{
return m_contentDir;
}
QStringList contentDirs()
{
return m_contentDirs;
}
bool isValid()
{
return m_valid;
}
private:
QString m_contentDir;
QStringList m_contentDirs;
QVector<QIconDirInfo> m_keyList;
QStringList m_parents;
bool m_valid;
};
class QIconLoader
{
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++;
}
void ensureInitialized();
private:
QThemeIconEntries findIconHelper(const QString &themeName, const QString &iconName,
QStringList &visited) const;
uint m_themeKey;
bool m_supportsSvg;
bool m_initialized;
mutable QString m_userTheme;
mutable QString m_systemTheme;
mutable QStringList m_iconDirs;
mutable QHash<QString, QIconTheme> themeList;
};
} // QtXdg
// Note: class template specialization of 'QTypeInfo' must occur at
// global scope
Q_DECLARE_TYPEINFO(QtXdg::QIconDirInfo, Q_MOVABLE_TYPE);
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