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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtDeclarative 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 Technology Preview License Agreement accompanying
+** this package.
+**
+** 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 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QMLGRAPHICSLAYOUTS_H
+#define QMLGRAPHICSLAYOUTS_H
+
+#include <QtCore/QObject>
+#include <QtCore/QString>
+#include <QtDeclarative/qmlgraphicsitem.h>
+#include <private/qmlstate_p.h>
+
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(Declarative)
+class QmlGraphicsBasePositionerPrivate;
+
+class Q_DECLARATIVE_EXPORT QmlGraphicsBasePositioner : public QmlGraphicsItem
+{
+ Q_OBJECT
+
+ Q_PROPERTY(int spacing READ spacing WRITE setSpacing NOTIFY spacingChanged)
+ Q_PROPERTY(QmlTransition *move READ move WRITE setMove)
+ Q_PROPERTY(QmlTransition *add READ add WRITE setAdd)
+ Q_PROPERTY(QmlTransition *remove READ remove WRITE setRemove)
+public:
+ enum AutoUpdateType { None = 0x0, Horizontal = 0x1, Vertical = 0x2, Both = 0x3 };
+ QmlGraphicsBasePositioner(AutoUpdateType, QmlGraphicsItem *parent);
+
+ int spacing() const;
+ void setSpacing(int);
+
+ QmlTransition *move() const;
+ void setMove(QmlTransition *);
+
+ QmlTransition *add() const;
+ void setAdd(QmlTransition *);
+
+ QmlTransition *remove() const;
+ void setRemove(QmlTransition *);
+
+protected:
+ virtual void componentComplete();
+ virtual QVariant itemChange(GraphicsItemChange, const QVariant &);
+ virtual bool event(QEvent *);
+ QSet<QmlGraphicsItem *>* newItems();
+ QSet<QmlGraphicsItem *>* leavingItems();
+ QSet<QmlGraphicsItem *>* items();
+ void applyAdd(const QList<QPair<QString, QVariant> >& changes, QmlGraphicsItem* target);
+ void applyMove(const QList<QPair<QString, QVariant> >& changes, QmlGraphicsItem* target);
+ void applyRemove(const QList<QPair<QString, QVariant> >& changes, QmlGraphicsItem* target);
+ void finishApplyTransitions();
+
+Q_SIGNALS:
+ void layoutItemChanged();
+ void spacingChanged();
+
+protected Q_SLOTS:
+ virtual void doPositioning()=0;
+
+private Q_SLOTS:
+ void prePositioning();
+
+protected:
+ QmlGraphicsBasePositioner(QmlGraphicsBasePositionerPrivate &dd, AutoUpdateType at, QmlGraphicsItem *parent);
+ void setMovingItem(QmlGraphicsItem *);
+
+private:
+ void applyTransition(const QList<QPair<QString, QVariant> >& changes, QmlGraphicsItem* target,
+ QmlStateOperation::ActionList &actions);
+ Q_DISABLE_COPY(QmlGraphicsBasePositioner)
+ Q_DECLARE_PRIVATE_D(QGraphicsItem::d_ptr.data(), QmlGraphicsBasePositioner)
+};
+
+class Q_DECLARATIVE_EXPORT QmlGraphicsColumn : public QmlGraphicsBasePositioner
+{
+ Q_OBJECT
+public:
+ QmlGraphicsColumn(QmlGraphicsItem *parent=0);
+protected Q_SLOTS:
+ virtual void doPositioning();
+private:
+ Q_DISABLE_COPY(QmlGraphicsColumn)
+};
+
+class Q_DECLARATIVE_EXPORT QmlGraphicsRow: public QmlGraphicsBasePositioner
+{
+ Q_OBJECT
+public:
+ QmlGraphicsRow(QmlGraphicsItem *parent=0);
+protected Q_SLOTS:
+ virtual void doPositioning();
+private:
+ Q_DISABLE_COPY(QmlGraphicsRow)
+};
+
+class Q_DECLARATIVE_EXPORT QmlGraphicsGrid : public QmlGraphicsBasePositioner
+{
+ Q_OBJECT
+ Q_PROPERTY(int rows READ rows WRITE setRows)
+ Q_PROPERTY(int columns READ columns WRITE setcolumns)
+public:
+ QmlGraphicsGrid(QmlGraphicsItem *parent=0);
+
+ int rows() const {return _rows;}
+ void setRows(const int rows){_rows = rows;}
+
+ int columns() const {return _columns;}
+ void setcolumns(const int columns){_columns = columns;}
+protected Q_SLOTS:
+ virtual void doPositioning();
+
+private:
+ int _rows;
+ int _columns;
+ Q_DISABLE_COPY(QmlGraphicsGrid)
+};
+
+QT_END_NAMESPACE
+
+QML_DECLARE_TYPE(QmlGraphicsColumn)
+QML_DECLARE_TYPE(QmlGraphicsRow)
+QML_DECLARE_TYPE(QmlGraphicsGrid)
+
+QT_END_HEADER
+
+#endif