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Diffstat (limited to 'src/declarative/graphicsitems/qdeclarativegridview_p.h')
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1 files changed, 223 insertions, 0 deletions
diff --git a/src/declarative/graphicsitems/qdeclarativegridview_p.h b/src/declarative/graphicsitems/qdeclarativegridview_p.h new file mode 100644 index 0000000..b488475 --- /dev/null +++ b/src/declarative/graphicsitems/qdeclarativegridview_p.h @@ -0,0 +1,223 @@ +/**************************************************************************** +** +** 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 QDECLARATIVEGRIDVIEW_H +#define QDECLARATIVEGRIDVIEW_H + +#include "qdeclarativeflickable_p.h" + +QT_BEGIN_HEADER + +QT_BEGIN_NAMESPACE + +QT_MODULE(Declarative) +class QDeclarativeVisualModel; +class QDeclarativeGridViewAttached; +class QDeclarativeGridViewPrivate; +class Q_DECLARATIVE_EXPORT QDeclarativeGridView : public QDeclarativeFlickable +{ + Q_OBJECT + Q_DECLARE_PRIVATE_D(QGraphicsItem::d_ptr.data(), QDeclarativeGridView) + + Q_PROPERTY(QVariant model READ model WRITE setModel) + Q_PROPERTY(QDeclarativeComponent *delegate READ delegate WRITE setDelegate) + Q_PROPERTY(int currentIndex READ currentIndex WRITE setCurrentIndex NOTIFY currentIndexChanged) + Q_PROPERTY(QDeclarativeItem *currentItem READ currentItem NOTIFY currentIndexChanged) + Q_PROPERTY(int count READ count NOTIFY countChanged) + + Q_PROPERTY(QDeclarativeComponent *highlight READ highlight WRITE setHighlight) + Q_PROPERTY(QDeclarativeItem *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: + QDeclarativeGridView(QDeclarativeItem *parent=0); + ~QDeclarativeGridView(); + + QVariant model() const; + void setModel(const QVariant &); + + QDeclarativeComponent *delegate() const; + void setDelegate(QDeclarativeComponent *); + + int currentIndex() const; + void setCurrentIndex(int idx); + + QDeclarativeItem *currentItem(); + QDeclarativeItem *highlightItem(); + int count() const; + + QDeclarativeComponent *highlight() const; + void setHighlight(QDeclarativeComponent *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 QDeclarativeGridViewAttached *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 modelReset(); + void destroyRemoved(); + void createdItem(int index, QDeclarativeItem *item); + void destroyingItem(QDeclarativeItem *item); + void sizeChange(); + void layout(); + +private: + void refill(); +}; + +class QDeclarativeGridViewAttached : public QObject +{ + Q_OBJECT +public: + QDeclarativeGridViewAttached(QObject *parent) + : QObject(parent), m_isCurrent(false), m_delayRemove(false) {} + ~QDeclarativeGridViewAttached() { + attachedProperties.remove(parent()); + } + + Q_PROPERTY(QDeclarativeGridView *view READ view CONSTANT) + QDeclarativeGridView *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 QDeclarativeGridViewAttached *properties(QObject *obj) { + QDeclarativeGridViewAttached *rv = attachedProperties.value(obj); + if (!rv) { + rv = new QDeclarativeGridViewAttached(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: + QDeclarativeGridView *m_view; + bool m_isCurrent; + bool m_delayRemove; + + static QHash<QObject*, QDeclarativeGridViewAttached*> attachedProperties; +}; + + +QT_END_NAMESPACE + +QML_DECLARE_TYPE(QDeclarativeGridView) +QML_DECLARE_TYPEINFO(QDeclarativeGridView, QML_HAS_ATTACHED_PROPERTIES) + +QT_END_HEADER + +#endif |