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/****************************************************************************
**
** Copyright (C) 2010 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 QMLGRAPHICSGRIDVIEW_H
#define QMLGRAPHICSGRIDVIEW_H
#include "qmlgraphicsflickable_p.h"
QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE
QT_MODULE(Declarative)
class QmlGraphicsVisualModel;
class QmlGraphicsGridViewAttached;
class QmlGraphicsGridViewPrivate;
class Q_DECLARATIVE_EXPORT QmlGraphicsGridView : public QmlGraphicsFlickable
{
Q_OBJECT
Q_DECLARE_PRIVATE_D(QGraphicsItem::d_ptr.data(), QmlGraphicsGridView)
Q_PROPERTY(QVariant model READ model WRITE setModel)
Q_PROPERTY(QmlComponent *delegate READ delegate WRITE setDelegate)
Q_PROPERTY(int currentIndex READ currentIndex WRITE setCurrentIndex NOTIFY currentIndexChanged)
Q_PROPERTY(QmlGraphicsItem *currentItem READ currentItem NOTIFY currentIndexChanged)
Q_PROPERTY(int count READ count NOTIFY countChanged)
Q_PROPERTY(QmlComponent *highlight READ highlight WRITE setHighlight)
Q_PROPERTY(QmlGraphicsItem *highlightItem READ highlightItem NOTIFY highlightChanged)
Q_PROPERTY(bool highlightFollowsCurrentItem READ highlightFollowsCurrentItem WRITE setHighlightFollowsCurrentItem)
Q_PROPERTY(Flow flow READ flow WRITE setFlow)
Q_PROPERTY(bool keyNavigationWraps READ isWrapEnabled WRITE setWrapEnabled)
Q_PROPERTY(int cacheBuffer READ cacheBuffer WRITE setCacheBuffer)
Q_PROPERTY(int cellWidth READ cellWidth WRITE setCellWidth NOTIFY cellWidthChanged)
Q_PROPERTY(int cellHeight READ cellHeight WRITE setCellHeight NOTIFY cellHeightChanged)
Q_CLASSINFO("DefaultProperty", "data")
public:
QmlGraphicsGridView(QmlGraphicsItem *parent=0);
~QmlGraphicsGridView();
QVariant model() const;
void setModel(const QVariant &);
QmlComponent *delegate() const;
void setDelegate(QmlComponent *);
int currentIndex() const;
void setCurrentIndex(int idx);
QmlGraphicsItem *currentItem();
QmlGraphicsItem *highlightItem();
int count() const;
QmlComponent *highlight() const;
void setHighlight(QmlComponent *highlight);
bool highlightFollowsCurrentItem() const;
void setHighlightFollowsCurrentItem(bool);
Q_ENUMS(Flow)
enum Flow { LeftToRight, TopToBottom };
Flow flow() const;
void setFlow(Flow);
bool isWrapEnabled() const;
void setWrapEnabled(bool);
int cacheBuffer() const;
void setCacheBuffer(int);
int cellWidth() const;
void setCellWidth(int);
int cellHeight() const;
void setCellHeight(int);
static QmlGraphicsGridViewAttached *qmlAttachedProperties(QObject *);
public Q_SLOTS:
void moveCurrentIndexUp();
void moveCurrentIndexDown();
void moveCurrentIndexLeft();
void moveCurrentIndexRight();
void positionViewAtIndex(int index);
Q_SIGNALS:
void countChanged();
void currentIndexChanged();
void cellWidthChanged();
void cellHeightChanged();
void highlightChanged();
protected:
virtual void viewportMoved();
virtual qreal minYExtent() const;
virtual qreal maxYExtent() const;
virtual qreal minXExtent() const;
virtual qreal maxXExtent() const;
virtual void keyPressEvent(QKeyEvent *);
virtual void componentComplete();
private Q_SLOTS:
void trackedPositionChanged();
void itemsInserted(int index, int count);
void itemsRemoved(int index, int count);
void itemsMoved(int from, int to, int count);
void destroyRemoved();
void createdItem(int index, QmlGraphicsItem *item);
void destroyingItem(QmlGraphicsItem *item);
void sizeChange();
void layout();
private:
void refill();
};
class QmlGraphicsGridViewAttached : public QObject
{
Q_OBJECT
public:
QmlGraphicsGridViewAttached(QObject *parent)
: QObject(parent), m_isCurrent(false), m_delayRemove(false) {}
~QmlGraphicsGridViewAttached() {
attachedProperties.remove(parent());
}
Q_PROPERTY(QmlGraphicsGridView *view READ view CONSTANT)
QmlGraphicsGridView *view() { return m_view; }
Q_PROPERTY(bool isCurrentItem READ isCurrentItem NOTIFY currentItemChanged)
bool isCurrentItem() const { return m_isCurrent; }
void setIsCurrentItem(bool c) {
if (m_isCurrent != c) {
m_isCurrent = c;
emit currentItemChanged();
}
}
Q_PROPERTY(bool delayRemove READ delayRemove WRITE setDelayRemove NOTIFY delayRemoveChanged)
bool delayRemove() const { return m_delayRemove; }
void setDelayRemove(bool delay) {
if (m_delayRemove != delay) {
m_delayRemove = delay;
emit delayRemoveChanged();
}
}
static QmlGraphicsGridViewAttached *properties(QObject *obj) {
QmlGraphicsGridViewAttached *rv = attachedProperties.value(obj);
if (!rv) {
rv = new QmlGraphicsGridViewAttached(obj);
attachedProperties.insert(obj, rv);
}
return rv;
}
void emitAdd() { emit add(); }
void emitRemove() { emit remove(); }
Q_SIGNALS:
void currentItemChanged();
void delayRemoveChanged();
void add();
void remove();
public:
QmlGraphicsGridView *m_view;
bool m_isCurrent;
bool m_delayRemove;
static QHash<QObject*, QmlGraphicsGridViewAttached*> attachedProperties;
};
QT_END_NAMESPACE
QML_DECLARE_TYPE(QmlGraphicsGridView)
QML_DECLARE_TYPEINFO(QmlGraphicsGridView, QML_HAS_ATTACHED_PROPERTIES)
QT_END_HEADER
#endif
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