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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.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "graphicslayouts_p.h"
+
+#include <QtGui/qgraphicswidget.h>
+#include <QtCore/qdebug.h>
+
+QT_BEGIN_NAMESPACE
+
+QML_DEFINE_INTERFACE(QGraphicsLayoutItem)
+QML_DEFINE_INTERFACE(QGraphicsLayout)
+
+QML_DEFINE_TYPE(Qt,4,6,QGraphicsLinearLayoutStretchItem,QGraphicsLinearLayoutStretchItemObject)
+QML_DEFINE_TYPE(Qt,4,6,QGraphicsLinearLayout,QGraphicsLinearLayoutObject)
+QML_DEFINE_TYPE(Qt,4,6,QGraphicsGridLayout,QGraphicsGridLayoutObject)
+
+class LinearLayoutAttached : public QObject
+{
+ Q_OBJECT
+
+ Q_PROPERTY(int stretchFactor READ stretchFactor WRITE setStretchFactor NOTIFY stretchChanged)
+ Q_PROPERTY(Qt::Alignment alignment READ alignment WRITE setAlignment NOTIFY alignmentChanged)
+public:
+ LinearLayoutAttached(QObject *parent)
+ : QObject(parent), _stretch(1), _alignment(Qt::AlignCenter)
+ {
+ }
+
+ int stretchFactor() const { return _stretch; }
+ void setStretchFactor(int f)
+ {
+ if (_stretch == f)
+ return;
+
+ _stretch = f;
+ emit stretchChanged(reinterpret_cast<QGraphicsLayoutItem*>(parent()), _stretch);
+ }
+
+ Qt::Alignment alignment() const { return _alignment; }
+ void setAlignment(Qt::Alignment a)
+ {
+ if (_alignment == a)
+ return;
+
+ _alignment = a;
+ emit alignmentChanged(reinterpret_cast<QGraphicsLayoutItem*>(parent()), _alignment);
+ }
+
+Q_SIGNALS:
+ void stretchChanged(QGraphicsLayoutItem*,int);
+ void alignmentChanged(QGraphicsLayoutItem*,Qt::Alignment);
+
+private:
+ int _stretch;
+ Qt::Alignment _alignment;
+};
+
+
+QGraphicsLinearLayoutStretchItemObject::QGraphicsLinearLayoutStretchItemObject(QObject *parent)
+ : QObject(parent)
+{
+}
+
+QSizeF QGraphicsLinearLayoutStretchItemObject::sizeHint(Qt::SizeHint which, const QSizeF &constraint) const
+{
+ Q_UNUSED(which);
+ Q_UNUSED(constraint);
+ return QSizeF();
+}
+
+
+QGraphicsLinearLayoutObject::QGraphicsLinearLayoutObject(QObject *parent)
+: QObject(parent), _children(this)
+{
+}
+
+QGraphicsLinearLayoutObject::~QGraphicsLinearLayoutObject()
+{
+}
+
+void QGraphicsLinearLayoutObject::insertLayoutItem(int index, QGraphicsLayoutItem *item)
+{
+ insertItem(index, item);
+
+ //connect attached properties
+ if (LinearLayoutAttached *obj = attachedProperties.value(item)) {
+ setStretchFactor(item, obj->stretchFactor());
+ setAlignment(item, obj->alignment());
+ QObject::connect(obj, SIGNAL(stretchChanged(QGraphicsLayoutItem*,int)),
+ this, SLOT(updateStretch(QGraphicsLayoutItem*,int)));
+ QObject::connect(obj, SIGNAL(alignmentChanged(QGraphicsLayoutItem*,Qt::Alignment)),
+ this, SLOT(updateAlignment(QGraphicsLayoutItem*,Qt::Alignment)));
+ //### need to disconnect when widget is removed?
+ }
+}
+
+//### is there a better way to do this?
+void QGraphicsLinearLayoutObject::clearChildren()
+{
+ for (int i = 0; i < count(); ++i)
+ removeAt(i);
+}
+
+void QGraphicsLinearLayoutObject::updateStretch(QGraphicsLayoutItem *item, int stretch)
+{
+ QGraphicsLinearLayout::setStretchFactor(item, stretch);
+}
+
+void QGraphicsLinearLayoutObject::updateAlignment(QGraphicsLayoutItem *item, Qt::Alignment alignment)
+{
+ QGraphicsLinearLayout::setAlignment(item, alignment);
+}
+
+QHash<QGraphicsLayoutItem*, LinearLayoutAttached*> QGraphicsLinearLayoutObject::attachedProperties;
+LinearLayoutAttached *QGraphicsLinearLayoutObject::qmlAttachedProperties(QObject *obj)
+{
+ // ### This is not allowed - you must attach to any object
+ if (!qobject_cast<QGraphicsLayoutItem*>(obj))
+ return 0;
+ LinearLayoutAttached *rv = new LinearLayoutAttached(obj);
+ attachedProperties.insert(qobject_cast<QGraphicsLayoutItem*>(obj), rv);
+ return rv;
+}
+
+//////////////////////////////////////////////////////////////////////////////////////////////////////
+// QGraphicsGridLayout-related classes
+//////////////////////////////////////////////////////////////////////////////////////////////////////
+class GridLayoutAttached : public QObject
+{
+ Q_OBJECT
+
+ Q_PROPERTY(int row READ row WRITE setRow)
+ Q_PROPERTY(int column READ column WRITE setColumn)
+ Q_PROPERTY(int rowSpan READ rowSpan WRITE setRowSpan)
+ Q_PROPERTY(int columnSpan READ columnSpan WRITE setColumnSpan)
+ Q_PROPERTY(Qt::Alignment alignment READ alignment WRITE setAlignment)
+public:
+ GridLayoutAttached(QObject *parent)
+ : QObject(parent), _row(-1), _column(-1), _rowspan(1), _colspan(1), _alignment(-1)
+ {
+ }
+
+ int row() const { return _row; }
+ void setRow(int r)
+ {
+ if (_row == r)
+ return;
+
+ _row = r;
+ //emit rowChanged(reinterpret_cast<QGraphicsLayoutItem*>(parent()), _row);
+ }
+
+ int column() const { return _column; }
+ void setColumn(int c)
+ {
+ if (_column == c)
+ return;
+
+ _column = c;
+ //emit columnChanged(reinterpret_cast<QGraphicsLayoutItem*>(parent()), _column);
+ }
+
+ int rowSpan() const { return _rowspan; }
+ void setRowSpan(int rs)
+ {
+ if (_rowspan == rs)
+ return;
+
+ _rowspan = rs;
+ //emit rowSpanChanged(reinterpret_cast<QGraphicsLayoutItem*>(parent()), _rowSpan);
+ }
+
+ int columnSpan() const { return _colspan; }
+ void setColumnSpan(int cs)
+ {
+ if (_colspan == cs)
+ return;
+
+ _colspan = cs;
+ //emit columnSpanChanged(reinterpret_cast<QGraphicsLayoutItem*>(parent()), _columnSpan);
+ }
+
+ Qt::Alignment alignment() const { return _alignment; }
+ void setAlignment(Qt::Alignment a)
+ {
+ if (_alignment == a)
+ return;
+
+ _alignment = a;
+ //emit alignmentChanged(reinterpret_cast<QGraphicsLayoutItem*>(parent()), _alignment);
+ }
+
+Q_SIGNALS:
+ //void rowChanged(QGraphicsLayoutItem*,int);
+ //void columnSpanChanged(QGraphicsLayoutItem*,int);
+ //void rowSpanChanged(QGraphicsLayoutItem*,int);
+ //void columnChanged(QGraphicsLayoutItem*,int);
+ //void alignmentChanged(QGraphicsLayoutItem*,Qt::Alignment);
+
+private:
+ int _row;
+ int _column;
+ int _rowspan;
+ int _colspan;
+ Qt::Alignment _alignment;
+};
+
+
+QGraphicsGridLayoutObject::QGraphicsGridLayoutObject(QObject *parent)
+: QObject(parent), _children(this)
+{
+}
+
+QGraphicsGridLayoutObject::~QGraphicsGridLayoutObject()
+{
+}
+
+void QGraphicsGridLayoutObject::addWidget(QGraphicsWidget *wid)
+{
+ //use attached properties
+ if (QObject *obj = attachedProperties.value(qobject_cast<QGraphicsLayoutItem*>(wid))) {
+ int row = static_cast<GridLayoutAttached *>(obj)->row();
+ int column = static_cast<GridLayoutAttached *>(obj)->column();
+ int rowSpan = static_cast<GridLayoutAttached *>(obj)->rowSpan();
+ int columnSpan = static_cast<GridLayoutAttached *>(obj)->columnSpan();
+ if (row == -1 || column == -1) {
+ qWarning() << "Must set row and column for an item in a grid layout";
+ return;
+ }
+ addItem(wid, row, column, rowSpan, columnSpan);
+ }
+}
+
+void QGraphicsGridLayoutObject::addLayoutItem(QGraphicsLayoutItem *item)
+{
+ //use attached properties
+ if (GridLayoutAttached *obj = attachedProperties.value(item)) {
+ int row = obj->row();
+ int column = obj->column();
+ int rowSpan = obj->rowSpan();
+ int columnSpan = obj->columnSpan();
+ Qt::Alignment alignment = obj->alignment();
+ if (row == -1 || column == -1) {
+ qWarning() << "Must set row and column for an item in a grid layout";
+ return;
+ }
+ addItem(item, row, column, rowSpan, columnSpan);
+ if (alignment != -1)
+ setAlignment(item,alignment);
+ }
+}
+
+//### is there a better way to do this?
+void QGraphicsGridLayoutObject::clearChildren()
+{
+ for (int i = 0; i < count(); ++i)
+ removeAt(i);
+}
+
+qreal QGraphicsGridLayoutObject::spacing() const
+{
+ if (verticalSpacing() == horizontalSpacing())
+ return verticalSpacing();
+ return -1; //###
+}
+
+QHash<QGraphicsLayoutItem*, GridLayoutAttached*> QGraphicsGridLayoutObject::attachedProperties;
+GridLayoutAttached *QGraphicsGridLayoutObject::qmlAttachedProperties(QObject *obj)
+{
+ // ### This is not allowed - you must attach to any object
+ if (!qobject_cast<QGraphicsLayoutItem*>(obj))
+ return 0;
+ GridLayoutAttached *rv = new GridLayoutAttached(obj);
+ attachedProperties.insert(qobject_cast<QGraphicsLayoutItem*>(obj), rv);
+ return rv;
+}
+
+QT_END_NAMESPACE
+
+#include <graphicslayouts.moc>