Split graphicsLayouts example into qgraphicslinearlayout and

qgraphicsgridlayout and clean up

16 files changed, 755 insertions, 585 deletions

diff --git a/examples/declarative/cppextensions/qgraphicslayouts/graphicsLayouts/graphicsLayouts.pro b/examples/declarative/cppextensions/qgraphicslayouts/graphicsLayouts/graphicsLayouts.pro
deleted file mode 100644
index e5d91b2..0000000
--- a/examples/declarative/cppextensions/qgraphicslayouts/graphicsLayouts/graphicsLayouts.pro
+++ /dev/null
@@ -1,13 +0,0 @@
-TEMPLATE = app
-TARGET  = graphicslayouts
-QT += declarative
-
-SOURCES += \
-    graphicslayouts.cpp \
-    main.cpp
-
-HEADERS += \
-    graphicslayouts_p.h
-
-RESOURCES += \
-    graphicslayouts.qrc
diff --git a/examples/declarative/cppextensions/qgraphicslayouts/graphicsLayouts/graphicsLayouts.qmlproject b/examples/declarative/cppextensions/qgraphicslayouts/graphicsLayouts/graphicsLayouts.qmlproject
deleted file mode 100644
index d4909f8..0000000
--- a/examples/declarative/cppextensions/qgraphicslayouts/graphicsLayouts/graphicsLayouts.qmlproject
+++ /dev/null
@@ -1,16 +0,0 @@
-import QmlProject 1.0
-
-Project {
-    /* Include .qml, .js, and image files from current directory and subdirectories */
-    QmlFiles {
-        directory: "."
-    }
-    JavaScriptFiles {
-        directory: "."
-    }
-    ImageFiles {
-        directory: "."
-    }
-    /* List of plugin directories passed to QML runtime */
-    // importPaths: [ " ../exampleplugin " ]
-}
diff --git a/examples/declarative/cppextensions/qgraphicslayouts/graphicsLayouts/graphicslayouts.cpp b/examples/declarative/cppextensions/qgraphicslayouts/graphicsLayouts/graphicslayouts.cpp
deleted file mode 100644
index 40e286d..0000000
--- a/examples/declarative/cppextensions/qgraphicslayouts/graphicsLayouts/graphicslayouts.cpp
+++ /dev/null
@@ -1,365 +0,0 @@
-/****************************************************************************
-**
-** 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.
-**
-** $QT_BEGIN_LICENSE:BSD$
-** You may use this file under the terms of the BSD license as follows:
-**
-** "Redistribution and use in source and binary forms, with or without
-** modification, are permitted provided that the following conditions are
-** met:
-**   * Redistributions of source code must retain the above copyright
-**     notice, this list of conditions and the following disclaimer.
-**   * Redistributions in binary form must reproduce the above copyright
-**     notice, this list of conditions and the following disclaimer in
-**     the documentation and/or other materials provided with the
-**     distribution.
-**   * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
-**     the names of its contributors may be used to endorse or promote
-**     products derived from this software without specific prior written
-**     permission.
-**
-** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#include "graphicslayouts_p.h"
-
-#include <QtGui/qgraphicswidget.h>
-#include <QtCore/qdebug.h>
-
-QT_BEGIN_NAMESPACE
-
-LinearLayoutAttached::LinearLayoutAttached(QObject *parent)
-: QObject(parent), _stretch(1), _alignment(Qt::AlignCenter), _spacing(0)
-{
-}
-
-void LinearLayoutAttached::setStretchFactor(int f)
-{
-    if (_stretch == f)
-        return;
-
-    _stretch = f;
-    emit stretchChanged(reinterpret_cast<QGraphicsLayoutItem*>(parent()), _stretch);
-}
-
-void LinearLayoutAttached::setSpacing(int s)
-{
-    if (_spacing == s)
-        return;
-
-    _spacing = s;
-    emit spacingChanged(reinterpret_cast<QGraphicsLayoutItem*>(parent()), _spacing);
-}
-
-void LinearLayoutAttached::setAlignment(Qt::Alignment a)
-{
-    if (_alignment == a)
-        return;
-
-    _alignment = a;
-    emit alignmentChanged(reinterpret_cast<QGraphicsLayoutItem*>(parent()), _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)
-{
-}
-
-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());
-    updateSpacing(item, obj->spacing());
-    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)));
-    QObject::connect(obj, SIGNAL(spacingChanged(QGraphicsLayoutItem*,int)),
-                     this, SLOT(updateSpacing(QGraphicsLayoutItem*,int)));
-    //### 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);
-}
-
-qreal QGraphicsLinearLayoutObject::contentsMargin() const
-{
-    qreal a,b,c,d;
-    getContentsMargins(&a, &b, &c, &d);
-    if(a==b && a==c && a==d)
-        return a;
-    return -1;
-}
-
-void QGraphicsLinearLayoutObject::setContentsMargin(qreal m)
-{
-    setContentsMargins(m,m,m,m);
-}
-
-void QGraphicsLinearLayoutObject::updateStretch(QGraphicsLayoutItem *item, int stretch)
-{
-QGraphicsLinearLayout::setStretchFactor(item, stretch);
-}
-
-void QGraphicsLinearLayoutObject::updateSpacing(QGraphicsLayoutItem* item, int spacing)
-{
-    for(int i=0; i < count(); i++){
-        if(itemAt(i) == item){ //I do not see the reverse function, which is why we must loop over all items
-            QGraphicsLinearLayout::setItemSpacing(i, spacing);
-            return;
-        }
-    }
-}
-
-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
-//////////////////////////////////////////////////////////////////////////////////////////////////////
-GridLayoutAttached::GridLayoutAttached(QObject *parent)
-: QObject(parent), _row(-1), _column(-1), _rowspan(1), _colspan(1), _alignment(-1), _rowstretch(-1),
-    _colstretch(-1), _rowspacing(-1), _colspacing(-1), _rowprefheight(-1), _rowmaxheight(-1), _rowminheight(-1),
-    _rowfixheight(-1), _colprefwidth(-1), _colmaxwidth(-1), _colminwidth(-1), _colfixwidth(-1)
-{
-}
-
-void GridLayoutAttached::setRow(int r)
-{
-    if (_row == r)
-        return;
-
-    _row = r;
-    //emit rowChanged(reinterpret_cast<QGraphicsLayoutItem*>(parent()), _row);
-}
-
-void GridLayoutAttached::setColumn(int c)
-{
-    if (_column == c)
-        return;
-
-    _column = c;
-    //emit columnChanged(reinterpret_cast<QGraphicsLayoutItem*>(parent()), _column);
-}
-
-void GridLayoutAttached::setRowSpan(int rs)
-{
-    if (_rowspan == rs)
-        return;
-
-    _rowspan = rs;
-    //emit rowSpanChanged(reinterpret_cast<QGraphicsLayoutItem*>(parent()), _rowSpan);
-}
-
-void GridLayoutAttached::setColumnSpan(int cs)
-{
-    if (_colspan == cs)
-        return;
-
-    _colspan = cs;
-    //emit columnSpanChanged(reinterpret_cast<QGraphicsLayoutItem*>(parent()), _columnSpan);
-}
-
-void GridLayoutAttached::setAlignment(Qt::Alignment a)
-{
-    if (_alignment == a)
-        return;
-
-    _alignment = a;
-    emit alignmentChanged(reinterpret_cast<QGraphicsLayoutItem*>(parent()), _alignment);
-}
-
-void GridLayoutAttached::setRowStretchFactor(int f)
-{
-    _rowstretch = f;
-}
-
-void GridLayoutAttached::setColumnStretchFactor(int f)
-{
-    _colstretch = f;
-}
-
-void GridLayoutAttached::setRowSpacing(int s)
-{
-    _rowspacing = s;
-}
-
-void GridLayoutAttached::setColumnSpacing(int s)
-{
-    _colspacing = s;
-}
-
-
-QGraphicsGridLayoutObject::QGraphicsGridLayoutObject(QObject *parent)
-: QObject(parent)
-{
-}
-
-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;
-    }
-    if(obj->rowSpacing() != -1)
-        setRowSpacing(row, obj->rowSpacing());
-    if(obj->columnSpacing() != -1)
-        setColumnSpacing(column, obj->columnSpacing());
-    if(obj->rowStretchFactor() != -1)
-        setRowStretchFactor(row, obj->rowStretchFactor());
-    if(obj->columnStretchFactor() != -1)
-        setColumnStretchFactor(column, obj->columnStretchFactor());
-    if(obj->rowPreferredHeight() != -1)
-        setRowPreferredHeight(row, obj->rowPreferredHeight());
-    if(obj->rowMaximumHeight() != -1)
-        setRowMaximumHeight(row, obj->rowMaximumHeight());
-    if(obj->rowMinimumHeight() != -1)
-        setRowMinimumHeight(row, obj->rowMinimumHeight());
-    if(obj->rowFixedHeight() != -1)
-        setRowFixedHeight(row, obj->rowFixedHeight());
-    if(obj->columnPreferredWidth() != -1)
-        setColumnPreferredWidth(row, obj->columnPreferredWidth());
-    if(obj->columnMaximumWidth() != -1)
-        setColumnMaximumWidth(row, obj->columnMaximumWidth());
-    if(obj->columnMinimumWidth() != -1)
-        setColumnMinimumWidth(row, obj->columnMinimumWidth());
-    if(obj->columnFixedWidth() != -1)
-        setColumnFixedWidth(row, obj->columnFixedWidth());
-    addItem(item, row, column, rowSpan, columnSpan);
-    if (alignment != -1)
-        setAlignment(item,alignment);
-    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 QGraphicsGridLayoutObject::clearChildren()
-{
-for (int i = 0; i < count(); ++i)
-    removeAt(i);
-}
-
-qreal QGraphicsGridLayoutObject::spacing() const
-{
-if (verticalSpacing() == horizontalSpacing())
-    return verticalSpacing();
-return -1;  //###
-}
-
-qreal QGraphicsGridLayoutObject::contentsMargin() const
-{
-    qreal a,b,c,d;
-    getContentsMargins(&a, &b, &c, &d);
-    if(a==b && a==c && a==d)
-        return a;
-    return -1;
-}
-
-void QGraphicsGridLayoutObject::setContentsMargin(qreal m)
-{
-    setContentsMargins(m,m,m,m);
-}
-
-
-void QGraphicsGridLayoutObject::updateAlignment(QGraphicsLayoutItem *item, Qt::Alignment alignment)
-{
-QGraphicsGridLayout::setAlignment(item, alignment);
-}
-
-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
diff --git a/examples/declarative/cppextensions/qgraphicslayouts/qgraphicsgridlayout/.main.cpp.swo b/examples/declarative/cppextensions/qgraphicslayouts/qgraphicsgridlayout/.main.cpp.swo
new file mode 100644
index 0000000..c742274
--- /dev/null
+++ b/examples/declarative/cppextensions/qgraphicslayouts/qgraphicsgridlayout/.main.cpp.swo
diff --git a/examples/declarative/cppextensions/qgraphicslayouts/qgraphicsgridlayout/gridlayout.cpp b/examples/declarative/cppextensions/qgraphicslayouts/qgraphicsgridlayout/gridlayout.cpp
new file mode 100644
index 0000000..728c225
--- /dev/null
+++ b/examples/declarative/cppextensions/qgraphicslayouts/qgraphicsgridlayout/gridlayout.cpp
@@ -0,0 +1,180 @@
+/****************************************************************************
+**
+** 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.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
+**     the names of its contributors may be used to endorse or promote
+**     products derived from this software without specific prior written
+**     permission.
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "gridlayout.h"
+
+#include <QGraphicsWidget>
+#include <QDebug>
+
+GridLayoutAttached::GridLayoutAttached(QObject *parent)
+: QObject(parent), m_row(-1), m_column(-1), m_rowspan(1), m_colspan(1), m_alignment(-1), m_rowStretch(-1),
+    m_colStretch(-1), m_rowSpacing(-1), m_colSpacing(-1), m_rowPrefHeight(-1), m_rowMaxHeight(-1), m_rowMinHeight(-1),
+    m_rowFixHeight(-1), m_colPrefwidth(-1), m_colMaxwidth(-1), m_colMinwidth(-1), m_colFixwidth(-1)
+{
+}
+
+void GridLayoutAttached::setAlignment(Qt::Alignment a)
+{
+    if (m_alignment != a) {
+        m_alignment = a;
+        emit alignmentChanged(reinterpret_cast<QGraphicsLayoutItem*>(parent()), m_alignment);
+    }
+}
+
+QHash<QGraphicsLayoutItem*, GridLayoutAttached*> QGraphicsGridLayoutObject::attachedProperties;
+
+QGraphicsGridLayoutObject::QGraphicsGridLayoutObject(QObject *parent)
+: QObject(parent)
+{
+}
+
+QGraphicsGridLayoutObject::~QGraphicsGridLayoutObject()
+{
+}
+
+void QGraphicsGridLayoutObject::addWidget(QGraphicsWidget *widget)
+{
+    //use attached properties
+    if (QObject *obj = attachedProperties.value(qobject_cast<QGraphicsLayoutItem*>(widget))) {
+        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(widget, 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;
+        }
+
+        if (obj->rowSpacing() != -1)
+            setRowSpacing(row, obj->rowSpacing());
+        if (obj->columnSpacing() != -1)
+            setColumnSpacing(column, obj->columnSpacing());
+        if (obj->rowStretchFactor() != -1)
+            setRowStretchFactor(row, obj->rowStretchFactor());
+        if (obj->columnStretchFactor() != -1)
+            setColumnStretchFactor(column, obj->columnStretchFactor());
+        if (obj->rowPreferredHeight() != -1)
+            setRowPreferredHeight(row, obj->rowPreferredHeight());
+        if (obj->rowMaximumHeight() != -1)
+            setRowMaximumHeight(row, obj->rowMaximumHeight());
+        if (obj->rowMinimumHeight() != -1)
+            setRowMinimumHeight(row, obj->rowMinimumHeight());
+        if (obj->rowFixedHeight() != -1)
+            setRowFixedHeight(row, obj->rowFixedHeight());
+        if (obj->columnPreferredWidth() != -1)
+            setColumnPreferredWidth(row, obj->columnPreferredWidth());
+        if (obj->columnMaximumWidth() != -1)
+            setColumnMaximumWidth(row, obj->columnMaximumWidth());
+        if (obj->columnMinimumWidth() != -1)
+            setColumnMinimumWidth(row, obj->columnMinimumWidth());
+        if (obj->columnFixedWidth() != -1)
+            setColumnFixedWidth(row, obj->columnFixedWidth());
+
+        addItem(item, row, column, rowSpan, columnSpan);
+
+        if (alignment != -1)
+            setAlignment(item, alignment);
+        QObject::connect(obj, SIGNAL(alignmentChanged(QGraphicsLayoutItem*, Qt::Alignment)),
+                         this, SLOT(updateAlignment(QGraphicsLayoutItem*, Qt::Alignment)));
+        //### need to disconnect when widget is removed? Re-implement removeAt()?
+    }
+}
+
+void QGraphicsGridLayoutObject::clearChildren()
+{
+    //### do I need to delete the removed items? And/or removed them from attachedProperties?
+    while (count() > 0)
+        removeAt(count()-1);
+}
+
+qreal QGraphicsGridLayoutObject::spacing() const
+{
+    if (verticalSpacing() == horizontalSpacing())
+        return verticalSpacing();
+    return -1;  //###
+}
+
+qreal QGraphicsGridLayoutObject::contentsMargin() const
+{
+    qreal a, b, c, d;
+    getContentsMargins(&a, &b, &c, &d);
+    if (a == b && a == c && a == d)
+        return a;
+    return -1;
+}
+
+void QGraphicsGridLayoutObject::setContentsMargin(qreal m)
+{
+    setContentsMargins(m, m, m, m);
+}
+
+void QGraphicsGridLayoutObject::updateAlignment(QGraphicsLayoutItem *item, Qt::Alignment alignment)
+{
+    QGraphicsGridLayout::setAlignment(item, alignment);
+}
+
+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;
+}
+
diff --git a/examples/declarative/cppextensions/qgraphicslayouts/graphicsLayouts/graphicslayouts_p.h b/examples/declarative/cppextensions/qgraphicslayouts/qgraphicsgridlayout/gridlayout.h
index 7aa98df..04f0148 100644
--- a/examples/declarative/cppextensions/qgraphicslayouts/graphicsLayouts/graphicslayouts_p.h
+++ b/examples/declarative/cppextensions/qgraphicslayouts/qgraphicsgridlayout/gridlayout.h
@@ -38,78 +38,13 @@
 **
 ****************************************************************************/
 
-#ifndef GRAPHICSLAYOUTS_H
-#define GRAPHICSLAYOUTS_H
+#ifndef GRIDLAYOUT_H
+#define GRIDLAYOUT_H
 
-#include <QtGui/QGraphicsLinearLayout>
-#include <QtGui/QGraphicsGridLayout>
 #include <qdeclarative.h>
 
-QT_BEGIN_HEADER
-
-QT_BEGIN_NAMESPACE
-
-QT_MODULE(Declarative)
-
-class QGraphicsLinearLayoutStretchItemObject : public QObject, public QGraphicsLayoutItem
-{
-    Q_OBJECT
-    Q_INTERFACES(QGraphicsLayoutItem)
-public:
-    QGraphicsLinearLayoutStretchItemObject(QObject *parent = 0);
-
-    virtual QSizeF sizeHint(Qt::SizeHint, const QSizeF &) const;
-};
-
-class LinearLayoutAttached;
-class QGraphicsLinearLayoutObject : public QObject, public QGraphicsLinearLayout
-{
-    Q_OBJECT
-    Q_INTERFACES(QGraphicsLayout QGraphicsLayoutItem)
-
-    Q_PROPERTY(QDeclarativeListProperty<QGraphicsLayoutItem> children READ children)
-    Q_PROPERTY(Qt::Orientation orientation READ orientation WRITE setOrientation)
-    Q_PROPERTY(qreal spacing READ spacing WRITE setSpacing)
-    Q_PROPERTY(qreal contentsMargin READ contentsMargin WRITE setContentsMargin)
-    Q_CLASSINFO("DefaultProperty", "children")
-public:
-    QGraphicsLinearLayoutObject(QObject * = 0);
-    ~QGraphicsLinearLayoutObject();
-
-    QDeclarativeListProperty<QGraphicsLayoutItem> children() { return QDeclarativeListProperty<QGraphicsLayoutItem>(this, 0, children_append, children_count, children_at, children_clear); }
-
-    static LinearLayoutAttached *qmlAttachedProperties(QObject *);
-
-    qreal contentsMargin() const;
-    void setContentsMargin(qreal);
-
-private Q_SLOTS:
-    void updateStretch(QGraphicsLayoutItem*,int);
-    void updateSpacing(QGraphicsLayoutItem*,int);
-    void updateAlignment(QGraphicsLayoutItem*,Qt::Alignment);
-
-private:
-    friend class LinearLayoutAttached;
-    void clearChildren();
-    void insertLayoutItem(int, QGraphicsLayoutItem *);
-    static QHash<QGraphicsLayoutItem*, LinearLayoutAttached*> attachedProperties;
-
-    static void children_append(QDeclarativeListProperty<QGraphicsLayoutItem> *prop, QGraphicsLayoutItem *item) {
-        static_cast<QGraphicsLinearLayoutObject*>(prop->object)->insertLayoutItem(-1, item);
-    }
-
-    static void children_clear(QDeclarativeListProperty<QGraphicsLayoutItem> *prop) {
-        static_cast<QGraphicsLinearLayoutObject*>(prop->object)->clearChildren();
-    }
-
-    static int children_count(QDeclarativeListProperty<QGraphicsLayoutItem> *prop) {
-        return static_cast<QGraphicsLinearLayoutObject*>(prop->object)->count();
-    }
-
-    static QGraphicsLayoutItem *children_at(QDeclarativeListProperty<QGraphicsLayoutItem> *prop, int index) {
-        return static_cast<QGraphicsLinearLayoutObject*>(prop->object)->itemAt(index);
-    }
-};
+#include <QGraphicsGridLayout>
+#include <QGraphicsLayoutItem>
 
 class GridLayoutAttached;
 class QGraphicsGridLayoutObject : public QObject, public QGraphicsGridLayout
@@ -123,6 +58,7 @@ class QGraphicsGridLayoutObject : public QObject, public QGraphicsGridLayout
     Q_PROPERTY(qreal verticalSpacing READ verticalSpacing WRITE setVerticalSpacing)
     Q_PROPERTY(qreal horizontalSpacing READ horizontalSpacing WRITE setHorizontalSpacing)
     Q_CLASSINFO("DefaultProperty", "children")
+
 public:
     QGraphicsGridLayoutObject(QObject * = 0);
     ~QGraphicsGridLayoutObject();
@@ -135,15 +71,15 @@ public:
 
     static GridLayoutAttached *qmlAttachedProperties(QObject *);
 
-private Q_SLOTS:
+private slots:
     void updateAlignment(QGraphicsLayoutItem*,Qt::Alignment);
 
 private:
     friend class GraphicsLayoutAttached;
+
     void addWidget(QGraphicsWidget *);
     void clearChildren();
     void addLayoutItem(QGraphicsLayoutItem *);
-    static QHash<QGraphicsLayoutItem*, GridLayoutAttached*> attachedProperties;
 
     static void children_append(QDeclarativeListProperty<QGraphicsLayoutItem> *prop, QGraphicsLayoutItem *item) {
         static_cast<QGraphicsGridLayoutObject*>(prop->object)->addLayoutItem(item);
@@ -160,53 +96,32 @@ private:
     static QGraphicsLayoutItem *children_at(QDeclarativeListProperty<QGraphicsLayoutItem> *prop, int index) {
         return static_cast<QGraphicsGridLayoutObject*>(prop->object)->itemAt(index);
     }
-};
 
-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)
-    Q_PROPERTY(int spacing READ spacing WRITE setSpacing NOTIFY spacingChanged)
-public:
-    LinearLayoutAttached(QObject *parent);
-
-    int stretchFactor() const { return _stretch; }
-    void setStretchFactor(int f);
-    Qt::Alignment alignment() const { return _alignment; }
-    void setAlignment(Qt::Alignment a);
-    int spacing() const { return _spacing; }
-    void setSpacing(int s);
-
-Q_SIGNALS:
-    void stretchChanged(QGraphicsLayoutItem*,int);
-    void alignmentChanged(QGraphicsLayoutItem*,Qt::Alignment);
-    void spacingChanged(QGraphicsLayoutItem*,int);
-
-private:
-    int _stretch;
-    Qt::Alignment _alignment;
-    int _spacing;
+    static QHash<QGraphicsLayoutItem*, GridLayoutAttached*> attachedProperties;
 };
 
+
 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)
+
     Q_PROPERTY(int rowStretchFactor READ rowStretchFactor WRITE setRowStretchFactor)
     Q_PROPERTY(int columnStretchFactor READ columnStretchFactor WRITE setColumnStretchFactor)
     Q_PROPERTY(int rowSpacing READ rowSpacing WRITE setRowSpacing)
     Q_PROPERTY(int columnSpacing READ columnSpacing WRITE setColumnSpacing)
+
     Q_PROPERTY(int rowPreferredHeight READ rowPreferredHeight WRITE setRowPreferredHeight)
     Q_PROPERTY(int rowMinimumHeight READ rowMinimumHeight WRITE setRowMinimumHeight)
     Q_PROPERTY(int rowMaximumHeight READ rowMaximumHeight WRITE setRowMaximumHeight)
     Q_PROPERTY(int rowFixedHeight READ rowFixedHeight WRITE setRowFixedHeight)
+
     Q_PROPERTY(int columnPreferredWidth READ columnPreferredWidth WRITE setColumnPreferredWidth)
     Q_PROPERTY(int columnMaximumWidth READ columnMaximumWidth WRITE setColumnMaximumWidth)
     Q_PROPERTY(int columnMinimumWidth READ columnMinimumWidth WRITE setColumnMinimumWidth)
@@ -215,88 +130,86 @@ class GridLayoutAttached : public QObject
 public:
     GridLayoutAttached(QObject *parent);
 
-    int row() const { return _row; }
-    void setRow(int r);
+    int row() const { return m_row; }
+    void setRow(int r) { m_row = r; }
 
-    int column() const { return _column; }
-    void setColumn(int c);
+    int column() const { return m_column; }
+    void setColumn(int c) { m_column = c; }
 
-    int rowSpan() const { return _rowspan; }
-    void setRowSpan(int rs);
+    int rowSpan() const { return m_rowspan; }
+    void setRowSpan(int rs) { m_rowspan = rs; }
 
-    int columnSpan() const { return _colspan; }
-    void setColumnSpan(int cs);
+    int columnSpan() const { return m_colspan; }
+    void setColumnSpan(int cs) { m_colspan = cs; }
 
-    Qt::Alignment alignment() const { return _alignment; }
+    Qt::Alignment alignment() const { return m_alignment; }
     void setAlignment(Qt::Alignment a);
 
-    int rowStretchFactor() const { return _rowstretch; }
-    void setRowStretchFactor(int f);
-    int columnStretchFactor() const { return _colstretch; }
-    void setColumnStretchFactor(int f);
+    int rowStretchFactor() const { return m_rowStretch; }
+    void setRowStretchFactor(int f) { m_rowStretch = f; }
+    int columnStretchFactor() const { return m_colStretch; }
+    void setColumnStretchFactor(int f) { m_colStretch = f; }
 
-    int rowSpacing() const { return _rowspacing; }
-    void setRowSpacing(int s);
-    int columnSpacing() const { return _colspacing; }
-    void setColumnSpacing(int s);
+    int rowSpacing() const { return m_rowSpacing; }
+    void setRowSpacing(int s) { m_rowSpacing = s; }
+    int columnSpacing() const { return m_colSpacing; }
+    void setColumnSpacing(int s) { m_colSpacing = s; }
 
-    int rowPreferredHeight() const { return _rowprefheight; }
-    void setRowPreferredHeight(int s) { _rowprefheight = s; }
+    int rowPreferredHeight() const { return m_rowPrefHeight; }
+    void setRowPreferredHeight(int s) { m_rowPrefHeight = s; }
 
-    int rowMaximumHeight() const { return _rowmaxheight; }
-    void setRowMaximumHeight(int s) { _rowmaxheight = s; }
+    int rowMaximumHeight() const { return m_rowMaxHeight; }
+    void setRowMaximumHeight(int s) { m_rowMaxHeight = s; }
 
-    int rowMinimumHeight() const { return _rowminheight; }
-    void setRowMinimumHeight(int s) { _rowminheight = s; }
+    int rowMinimumHeight() const { return m_rowMinHeight; }
+    void setRowMinimumHeight(int s) { m_rowMinHeight = s; }
 
-    int rowFixedHeight() const { return _rowfixheight; }
-    void setRowFixedHeight(int s) { _rowfixheight = s; }
+    int rowFixedHeight() const { return m_rowFixHeight; }
+    void setRowFixedHeight(int s) { m_rowFixHeight = s; }
 
-    int columnPreferredWidth() const { return _colprefwidth; }
-    void setColumnPreferredWidth(int s) { _colprefwidth = s; }
+    int columnPreferredWidth() const { return m_colPrefwidth; }
+    void setColumnPreferredWidth(int s) { m_colPrefwidth = s; }
 
-    int columnMaximumWidth() const { return _colmaxwidth; }
-    void setColumnMaximumWidth(int s) { _colmaxwidth = s; }
+    int columnMaximumWidth() const { return m_colMaxwidth; }
+    void setColumnMaximumWidth(int s) { m_colMaxwidth = s; }
 
-    int columnMinimumWidth() const { return _colminwidth; }
-    void setColumnMinimumWidth(int s) { _colminwidth = s; }
+    int columnMinimumWidth() const { return m_colMinwidth; }
+    void setColumnMinimumWidth(int s) { m_colMinwidth = s; }
 
-    int columnFixedWidth() const { return _colfixwidth; }
-    void setColumnFixedWidth(int s) { _colfixwidth = s; }
+    int columnFixedWidth() const { return m_colFixwidth; }
+    void setColumnFixedWidth(int s) { m_colFixwidth = s; }
 
-Q_SIGNALS:
-    void alignmentChanged(QGraphicsLayoutItem*,Qt::Alignment);
+signals:
+    void alignmentChanged(QGraphicsLayoutItem*, Qt::Alignment);
 
 private:
-    int _row;
-    int _column;
-    int _rowspan;
-    int _colspan;
-    Qt::Alignment _alignment;
-    int _rowstretch;
-    int _colstretch;
-    int _rowspacing;
-    int _colspacing;
-    int _rowprefheight;
-    int _rowmaxheight;
-    int _rowminheight;
-    int _rowfixheight;
-    int _colprefwidth;
-    int _colmaxwidth;
-    int _colminwidth;
-    int _colfixwidth;
+    int m_row;
+    int m_column;
+
+    int m_rowspan;
+    int m_colspan;
+    Qt::Alignment m_alignment;
+
+    int m_rowStretch;
+    int m_colStretch;
+    int m_rowSpacing;
+    int m_colSpacing;
+
+    int m_rowPrefHeight;
+    int m_rowMaxHeight;
+    int m_rowMinHeight;
+    int m_rowFixHeight;
+
+    int m_colPrefwidth;
+    int m_colMaxwidth;
+    int m_colMinwidth;
+    int m_colFixwidth;
 };
 
-QT_END_NAMESPACE
-
 QML_DECLARE_INTERFACE(QGraphicsLayoutItem)
 QML_DECLARE_INTERFACE(QGraphicsLayout)
-QML_DECLARE_TYPE(QGraphicsLinearLayoutStretchItemObject)
-QML_DECLARE_TYPE(QGraphicsLinearLayoutObject)
-QML_DECLARE_TYPEINFO(QGraphicsLinearLayoutObject, QML_HAS_ATTACHED_PROPERTIES)
 QML_DECLARE_TYPE(QGraphicsGridLayoutObject)
 QML_DECLARE_TYPEINFO(QGraphicsGridLayoutObject, QML_HAS_ATTACHED_PROPERTIES)
 
-QT_END_HEADER
+#endif
 
-#endif // GRAPHICSLAYOUTS_H
diff --git a/examples/declarative/cppextensions/qgraphicslayouts/graphicsLayouts/graphicslayouts.qrc b/examples/declarative/cppextensions/qgraphicslayouts/qgraphicsgridlayout/gridlayout.qrc
index a199f8d..bdf8312 100644
--- a/examples/declarative/cppextensions/qgraphicslayouts/graphicsLayouts/graphicslayouts.qrc
+++ b/examples/declarative/cppextensions/qgraphicslayouts/qgraphicsgridlayout/gridlayout.qrc
@@ -1,5 +1,6 @@
 <!DOCTYPE RCC><RCC version="1.0">
 <qresource>
-    <file>graphicslayouts.qml</file>
+    <file>qgraphicsgridlayout.qml</file>
 </qresource>
 </RCC>
+
diff --git a/examples/declarative/cppextensions/qgraphicslayouts/graphicsLayouts/main.cpp b/examples/declarative/cppextensions/qgraphicslayouts/qgraphicsgridlayout/main.cpp
index b0a15fc..7585b23 100644
--- a/examples/declarative/cppextensions/qgraphicslayouts/graphicsLayouts/main.cpp
+++ b/examples/declarative/cppextensions/qgraphicslayouts/qgraphicsgridlayout/main.cpp
@@ -38,22 +38,26 @@
 **
 ****************************************************************************/
 
+#include "gridlayout.h"
+
+#include <qdeclarative.h>
+#include <QDeclarativeView>
+
 #include <QApplication>
-#include <QtDeclarative/qdeclarative.h>
-#include "graphicslayouts_p.h"
-#include <QtDeclarative/QDeclarativeView>
 
 int main(int argc, char* argv[])
 {
     QApplication app(argc, argv);
-    QDeclarativeView view;
+
     qmlRegisterInterface<QGraphicsLayoutItem>("QGraphicsLayoutItem");
     qmlRegisterInterface<QGraphicsLayout>("QGraphicsLayout");
-    qmlRegisterType<QGraphicsLinearLayoutStretchItemObject>("GraphicsLayouts",4,7,"QGraphicsLinearLayoutStretchItem");
-    qmlRegisterType<QGraphicsLinearLayoutObject>("GraphicsLayouts",4,7,"QGraphicsLinearLayout");
-    qmlRegisterType<QGraphicsGridLayoutObject>("GraphicsLayouts",4,7,"QGraphicsGridLayout");
-    view.setSource(QUrl(":graphicslayouts.qml"));
+    qmlRegisterType<QGraphicsGridLayoutObject>("GridLayouts",4,7,"QGraphicsGridLayout");
+
+    QDeclarativeView view;
+    view.setSource(QUrl(":qgraphicsgridlayout.qml"));
     view.show();
+
     return app.exec();
 };
 
+
diff --git a/examples/declarative/cppextensions/qgraphicslayouts/qgraphicsgridlayout/qgraphicsgridlayout.pro b/examples/declarative/cppextensions/qgraphicslayouts/qgraphicsgridlayout/qgraphicsgridlayout.pro
new file mode 100644
index 0000000..ae6373d
--- /dev/null
+++ b/examples/declarative/cppextensions/qgraphicslayouts/qgraphicsgridlayout/qgraphicsgridlayout.pro
@@ -0,0 +1,15 @@
+TEMPLATE = app
+TARGET  = qgraphicsgridlayout
+QT += declarative
+
+SOURCES += \
+    gridlayout.cpp \
+    main.cpp
+
+HEADERS += \
+    gridlayout.h
+
+RESOURCES += \
+    gridlayout.qrc
+
+
diff --git a/examples/declarative/cppextensions/qgraphicslayouts/graphicsLayouts/graphicslayouts.qml b/examples/declarative/cppextensions/qgraphicslayouts/qgraphicsgridlayout/qgraphicsgridlayout.qml
index 586f7f9..c3edf1d 100644
--- a/examples/declarative/cppextensions/qgraphicslayouts/graphicsLayouts/graphicslayouts.qml
+++ b/examples/declarative/cppextensions/qgraphicslayouts/qgraphicsgridlayout/qgraphicsgridlayout.qml
@@ -39,42 +39,22 @@
 ****************************************************************************/
 
 import Qt 4.7
-import GraphicsLayouts 4.7
+import GridLayouts 4.7
 
 Item {
-    id: resizable
-
-    width: 800
+    width: 400
     height: 400
 
     QGraphicsWidget {
-        size.width: parent.width/2
-        size.height: parent.height
-
-        layout: QGraphicsLinearLayout {
-            LayoutItem {
-                minimumSize: "100x100"
-                maximumSize: "300x300"
-                preferredSize: "100x100"
-                Rectangle { color: "yellow"; anchors.fill: parent }
-            }
-            LayoutItem {
-                minimumSize: "100x100"
-                maximumSize: "400x400"
-                preferredSize: "200x200"
-                Rectangle { color: "green"; anchors.fill: parent }
-            }
-        }
-    }
-    QGraphicsWidget {
-        x: parent.width/2
-        size.width: parent.width/2
+        size.width: parent.width
         size.height: parent.height
 
         layout: QGraphicsGridLayout {
+            objectName: "layout"
             LayoutItem {
                 QGraphicsGridLayout.row: 0
                 QGraphicsGridLayout.column: 0
+                QGraphicsGridLayout.alignment: Qt.AlignLeft
                 minimumSize: "100x100"
                 maximumSize: "300x300"
                 preferredSize: "100x100"
@@ -115,3 +95,4 @@ Item {
         }
     }
 }
+
diff --git a/examples/declarative/cppextensions/qgraphicslayouts/qgraphicslinearlayout/linearlayout.cpp b/examples/declarative/cppextensions/qgraphicslayouts/qgraphicslinearlayout/linearlayout.cpp
new file mode 100644
index 0000000..5cd35cb
--- /dev/null
+++ b/examples/declarative/cppextensions/qgraphicslayouts/qgraphicslinearlayout/linearlayout.cpp
@@ -0,0 +1,167 @@
+/****************************************************************************
+**
+** 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.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
+**     the names of its contributors may be used to endorse or promote
+**     products derived from this software without specific prior written
+**     permission.
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "linearlayout.h"
+
+#include <QGraphicsWidget>
+#include <QGraphicsLayoutItem>
+
+LinearLayoutAttached::LinearLayoutAttached(QObject *parent)
+: QObject(parent), m_stretch(1), m_alignment(Qt::AlignCenter), m_spacing(0)
+{
+}
+
+void LinearLayoutAttached::setStretchFactor(int f)
+{
+    if (m_stretch != f) {
+        m_stretch = f;
+        emit stretchChanged(reinterpret_cast<QGraphicsLayoutItem*>(parent()), m_stretch);
+    }
+}
+
+void LinearLayoutAttached::setSpacing(int s)
+{
+    if (m_spacing != s) {
+        m_spacing = s;
+        emit spacingChanged(reinterpret_cast<QGraphicsLayoutItem*>(parent()), m_spacing);
+    }
+}
+
+void LinearLayoutAttached::setAlignment(Qt::Alignment a)
+{
+    if (m_alignment != a) {
+        m_alignment = a;
+        emit alignmentChanged(reinterpret_cast<QGraphicsLayoutItem*>(parent()), m_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)
+{
+}
+
+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());
+        updateSpacing(item, obj->spacing());
+        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)));
+        QObject::connect(obj, SIGNAL(spacingChanged(QGraphicsLayoutItem*,int)),
+                         this, SLOT(updateSpacing(QGraphicsLayoutItem*,int)));
+        //### need to disconnect when widget is removed?
+    }
+}
+
+void QGraphicsLinearLayoutObject::clearChildren()
+{
+    while (count() > 0)
+        removeAt(count()-1);
+}
+
+qreal QGraphicsLinearLayoutObject::contentsMargin() const
+{
+    qreal a, b, c, d;
+    getContentsMargins(&a, &b, &c, &d);
+    if (a == b && a == c && a == d)
+        return a;
+    return -1;
+}
+
+void QGraphicsLinearLayoutObject::setContentsMargin(qreal m)
+{
+    setContentsMargins(m, m, m, m);
+}
+
+void QGraphicsLinearLayoutObject::updateStretch(QGraphicsLayoutItem *item, int stretch)
+{
+    QGraphicsLinearLayout::setStretchFactor(item, stretch);
+}
+
+void QGraphicsLinearLayoutObject::updateSpacing(QGraphicsLayoutItem* item, int spacing)
+{
+    for (int i=0; i < count(); i++){
+        if (itemAt(i) == item) {
+            QGraphicsLinearLayout::setItemSpacing(i, spacing);
+            return;
+        }
+    }
+}
+
+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;
+}
+
+
diff --git a/examples/declarative/cppextensions/qgraphicslayouts/qgraphicslinearlayout/linearlayout.h b/examples/declarative/cppextensions/qgraphicslayouts/qgraphicslinearlayout/linearlayout.h
new file mode 100644
index 0000000..392f3f8
--- /dev/null
+++ b/examples/declarative/cppextensions/qgraphicslayouts/qgraphicslinearlayout/linearlayout.h
@@ -0,0 +1,150 @@
+/****************************************************************************
+**
+** 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.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
+**     the names of its contributors may be used to endorse or promote
+**     products derived from this software without specific prior written
+**     permission.
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef LINEARLAYOUT_H
+#define LINEARLAYOUT_H
+
+#include <qdeclarative.h>
+
+#include <QGraphicsLinearLayout>
+#include <QGraphicsLayoutItem>
+
+class QGraphicsLinearLayoutStretchItemObject : public QObject, public QGraphicsLayoutItem
+{
+    Q_OBJECT
+    Q_INTERFACES(QGraphicsLayoutItem)
+public:
+    QGraphicsLinearLayoutStretchItemObject(QObject *parent = 0);
+
+    virtual QSizeF sizeHint(Qt::SizeHint, const QSizeF &) const;
+};
+
+
+class LinearLayoutAttached;
+class QGraphicsLinearLayoutObject : public QObject, public QGraphicsLinearLayout
+{
+    Q_OBJECT
+    Q_INTERFACES(QGraphicsLayout QGraphicsLayoutItem)
+
+    Q_PROPERTY(QDeclarativeListProperty<QGraphicsLayoutItem> children READ children)
+    Q_PROPERTY(Qt::Orientation orientation READ orientation WRITE setOrientation)
+    Q_PROPERTY(qreal spacing READ spacing WRITE setSpacing)
+    Q_PROPERTY(qreal contentsMargin READ contentsMargin WRITE setContentsMargin)
+    Q_CLASSINFO("DefaultProperty", "children")
+public:
+    QGraphicsLinearLayoutObject(QObject * = 0);
+    ~QGraphicsLinearLayoutObject();
+
+    QDeclarativeListProperty<QGraphicsLayoutItem> children() { return QDeclarativeListProperty<QGraphicsLayoutItem>(this, 0, children_append, children_count, children_at, children_clear); }
+
+    static LinearLayoutAttached *qmlAttachedProperties(QObject *);
+
+    qreal contentsMargin() const;
+    void setContentsMargin(qreal);
+
+private slots:
+    void updateStretch(QGraphicsLayoutItem*,int);
+    void updateSpacing(QGraphicsLayoutItem*,int);
+    void updateAlignment(QGraphicsLayoutItem*,Qt::Alignment);
+
+private:
+    friend class LinearLayoutAttached;
+
+    void clearChildren();
+    void insertLayoutItem(int, QGraphicsLayoutItem *);
+
+    static void children_append(QDeclarativeListProperty<QGraphicsLayoutItem> *prop, QGraphicsLayoutItem *item) {
+        static_cast<QGraphicsLinearLayoutObject*>(prop->object)->insertLayoutItem(-1, item);
+    }
+
+    static void children_clear(QDeclarativeListProperty<QGraphicsLayoutItem> *prop) {
+        static_cast<QGraphicsLinearLayoutObject*>(prop->object)->clearChildren();
+    }
+
+    static int children_count(QDeclarativeListProperty<QGraphicsLayoutItem> *prop) {
+        return static_cast<QGraphicsLinearLayoutObject*>(prop->object)->count();
+    }
+
+    static QGraphicsLayoutItem *children_at(QDeclarativeListProperty<QGraphicsLayoutItem> *prop, int index) {
+        return static_cast<QGraphicsLinearLayoutObject*>(prop->object)->itemAt(index);
+    }
+
+    static QHash<QGraphicsLayoutItem*, LinearLayoutAttached*> attachedProperties;
+};
+
+
+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)
+    Q_PROPERTY(int spacing READ spacing WRITE setSpacing NOTIFY spacingChanged)
+
+public:
+    LinearLayoutAttached(QObject *parent);
+
+    int stretchFactor() const { return m_stretch; }
+    void setStretchFactor(int f);
+    Qt::Alignment alignment() const { return m_alignment; }
+    void setAlignment(Qt::Alignment a);
+    int spacing() const { return m_spacing; }
+    void setSpacing(int s);
+
+signals:
+    void stretchChanged(QGraphicsLayoutItem*, int);
+    void alignmentChanged(QGraphicsLayoutItem*, Qt::Alignment);
+    void spacingChanged(QGraphicsLayoutItem*, int);
+
+private:
+    int m_stretch;
+    Qt::Alignment m_alignment;
+    int m_spacing;
+};
+
+QML_DECLARE_INTERFACE(QGraphicsLayoutItem)
+QML_DECLARE_INTERFACE(QGraphicsLayout)
+QML_DECLARE_TYPE(QGraphicsLinearLayoutStretchItemObject)
+QML_DECLARE_TYPE(QGraphicsLinearLayoutObject)
+QML_DECLARE_TYPEINFO(QGraphicsLinearLayoutObject, QML_HAS_ATTACHED_PROPERTIES)
+
+#endif
+
+
diff --git a/examples/declarative/cppextensions/qgraphicslayouts/qgraphicslinearlayout/linearlayout.qrc b/examples/declarative/cppextensions/qgraphicslayouts/qgraphicslinearlayout/linearlayout.qrc
new file mode 100644
index 0000000..93a3533
--- /dev/null
+++ b/examples/declarative/cppextensions/qgraphicslayouts/qgraphicslinearlayout/linearlayout.qrc
@@ -0,0 +1,6 @@
+<!DOCTYPE RCC><RCC version="1.0">
+<qresource>
+    <file>qgraphicslinearlayout.qml</file>
+</qresource>
+</RCC>
+
diff --git a/examples/declarative/cppextensions/qgraphicslayouts/qgraphicslinearlayout/main.cpp b/examples/declarative/cppextensions/qgraphicslayouts/qgraphicslinearlayout/main.cpp
new file mode 100644
index 0000000..c76e403
--- /dev/null
+++ b/examples/declarative/cppextensions/qgraphicslayouts/qgraphicslinearlayout/main.cpp
@@ -0,0 +1,64 @@
+/****************************************************************************
+**
+** 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 plugins of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
+**     the names of its contributors may be used to endorse or promote
+**     products derived from this software without specific prior written
+**     permission.
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "linearlayout.h"
+
+#include <qdeclarative.h>
+#include <QDeclarativeView>
+
+#include <QApplication>
+
+int main(int argc, char* argv[])
+{
+    QApplication app(argc, argv);
+
+    qmlRegisterInterface<QGraphicsLayoutItem>("QGraphicsLayoutItem");
+    qmlRegisterInterface<QGraphicsLayout>("QGraphicsLayout");
+    qmlRegisterType<QGraphicsLinearLayoutStretchItemObject>("LinearLayouts",4,7,"QGraphicsLinearLayoutStretchItem");
+    qmlRegisterType<QGraphicsLinearLayoutObject>("LinearLayouts",4,7,"QGraphicsLinearLayout");
+
+    QDeclarativeView view;
+    view.setSource(QUrl(":qgraphicslinearlayout.qml"));
+    view.show();
+
+    return app.exec();
+};
+
+
diff --git a/examples/declarative/cppextensions/qgraphicslayouts/qgraphicslinearlayout/qgraphicslinearlayout.pro b/examples/declarative/cppextensions/qgraphicslayouts/qgraphicslinearlayout/qgraphicslinearlayout.pro
new file mode 100644
index 0000000..79eb6ff
--- /dev/null
+++ b/examples/declarative/cppextensions/qgraphicslayouts/qgraphicslinearlayout/qgraphicslinearlayout.pro
@@ -0,0 +1,15 @@
+TEMPLATE = app
+TARGET  = qgraphicslinearlayout
+QT += declarative
+
+SOURCES += \
+    linearlayout.cpp \
+    main.cpp
+
+HEADERS += \
+    linearlayout.h
+
+RESOURCES += \
+    linearlayout.qrc
+
+
diff --git a/examples/declarative/cppextensions/qgraphicslayouts/qgraphicslinearlayout/qgraphicslinearlayout.qml b/examples/declarative/cppextensions/qgraphicslayouts/qgraphicslinearlayout/qgraphicslinearlayout.qml
new file mode 100644
index 0000000..da77921
--- /dev/null
+++ b/examples/declarative/cppextensions/qgraphicslayouts/qgraphicslinearlayout/qgraphicslinearlayout.qml
@@ -0,0 +1,68 @@
+/****************************************************************************
+**
+** 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.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
+**     the names of its contributors may be used to endorse or promote
+**     products derived from this software without specific prior written
+**     permission.
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+import Qt 4.7
+import LinearLayouts 4.7
+
+Item {
+    width: 400
+    height: 400
+
+    QGraphicsWidget {
+        size.width: parent.width
+        size.height: parent.height
+
+        layout: QGraphicsLinearLayout {
+            LayoutItem {
+                minimumSize: "100x100"
+                maximumSize: "300x300"
+                preferredSize: "100x100"
+                Rectangle { color: "yellow"; anchors.fill: parent }
+            }
+            LayoutItem {
+                minimumSize: "100x100"
+                maximumSize: "400x400"
+                preferredSize: "200x200"
+                Rectangle { color: "green"; anchors.fill: parent }
+            }
+        }
+    }
+}
+