Expose implicitWidth and implicitHeight properties of Item.

Overridden as readonly for elements that have an inherent implicit size
such as Text, TextEdit, TextInput, positioners, Loader.

Task-number: QTBUG-14957
Reviewed-by: Michael Brasser

29 files changed, 652 insertions, 57 deletions

diff --git a/src/declarative/graphicsitems/graphicsitems.pri b/src/declarative/graphicsitems/graphicsitems.pri
index 2cd3323b99..9904274023 100644
--- a/src/declarative/graphicsitems/graphicsitems.pri
+++ b/src/declarative/graphicsitems/graphicsitems.pri
@@ -52,7 +52,10 @@ HEADERS += \
     $$PWD/qdeclarativegraphicswidget_p.h \
     $$PWD/qdeclarativetextlayout_p.h \
     $$PWD/qdeclarativepincharea_p.h \
-    $$PWD/qdeclarativepincharea_p_p.h
+    $$PWD/qdeclarativepincharea_p_p.h \
+    $$PWD/qdeclarativeimplicitsizeitem_p.h \
+    $$PWD/qdeclarativeimplicitsizeitem_p_p.h
+
 
 SOURCES += \
     $$PWD/qdeclarativeitemsmodule.cpp \
@@ -86,5 +89,6 @@ SOURCES += \
     $$PWD/qdeclarativelayoutitem.cpp \
     $$PWD/qdeclarativegraphicswidget.cpp \
     $$PWD/qdeclarativetextlayout.cpp \
-    $$PWD/qdeclarativepincharea.cpp
+    $$PWD/qdeclarativepincharea.cpp \
+    $$PWD/qdeclarativeimplicitsizeitem.cpp
 
diff --git a/src/declarative/graphicsitems/qdeclarativeimagebase.cpp b/src/declarative/graphicsitems/qdeclarativeimagebase.cpp
index 7ce357b56c..8448bd63ca 100644
--- a/src/declarative/graphicsitems/qdeclarativeimagebase.cpp
+++ b/src/declarative/graphicsitems/qdeclarativeimagebase.cpp
@@ -49,7 +49,7 @@
 QT_BEGIN_NAMESPACE
 
 QDeclarativeImageBase::QDeclarativeImageBase(QDeclarativeImageBasePrivate &dd, QDeclarativeItem *parent)
-  : QDeclarativeItem(dd, parent)
+  : QDeclarativeImplicitSizeItem(dd, parent)
 {
 }
 
diff --git a/src/declarative/graphicsitems/qdeclarativeimagebase_p.h b/src/declarative/graphicsitems/qdeclarativeimagebase_p.h
index 4d2aa04afb..d183bdc84a 100644
--- a/src/declarative/graphicsitems/qdeclarativeimagebase_p.h
+++ b/src/declarative/graphicsitems/qdeclarativeimagebase_p.h
@@ -42,14 +42,14 @@
 #ifndef QDECLARATIVEIMAGEBASE_H
 #define QDECLARATIVEIMAGEBASE_H
 
-#include "qdeclarativeitem.h"
+#include "qdeclarativeimplicitsizeitem_p.h"
 
 QT_BEGIN_HEADER
 
 QT_BEGIN_NAMESPACE
 
 class QDeclarativeImageBasePrivate;
-class Q_AUTOTEST_EXPORT QDeclarativeImageBase : public QDeclarativeItem
+class Q_AUTOTEST_EXPORT QDeclarativeImageBase : public QDeclarativeImplicitSizeItem
 {
     Q_OBJECT
     Q_ENUMS(Status)
diff --git a/src/declarative/graphicsitems/qdeclarativeimagebase_p_p.h b/src/declarative/graphicsitems/qdeclarativeimagebase_p_p.h
index 39cf44efad..ab16e66fd6 100644
--- a/src/declarative/graphicsitems/qdeclarativeimagebase_p_p.h
+++ b/src/declarative/graphicsitems/qdeclarativeimagebase_p_p.h
@@ -53,7 +53,7 @@
 // We mean it.
 //
 
-#include "private/qdeclarativeitem_p.h"
+#include "private/qdeclarativeimplicitsizeitem_p_p.h"
 #include "private/qdeclarativepixmapcache_p.h"
 
 #include <QtCore/QPointer>
@@ -61,7 +61,7 @@
 QT_BEGIN_NAMESPACE
 
 class QNetworkReply;
-class QDeclarativeImageBasePrivate : public QDeclarativeItemPrivate
+class QDeclarativeImageBasePrivate : public QDeclarativeImplicitSizeItemPrivate
 {
     Q_DECLARE_PUBLIC(QDeclarativeImageBase)
 
diff --git a/src/declarative/graphicsitems/qdeclarativeimplicitsizeitem.cpp b/src/declarative/graphicsitems/qdeclarativeimplicitsizeitem.cpp
new file mode 100644
index 0000000000..31ac28f062
--- /dev/null
+++ b/src/declarative/graphicsitems/qdeclarativeimplicitsizeitem.cpp
@@ -0,0 +1,92 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 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 "private/qdeclarativeimplicitsizeitem_p.h"
+#include "private/qdeclarativeimplicitsizeitem_p_p.h"
+
+QT_BEGIN_NAMESPACE
+
+void QDeclarativeImplicitSizeItemPrivate::implicitWidthChanged()
+{
+    Q_Q(QDeclarativeImplicitSizeItem);
+    emit q->implicitWidthChanged();
+}
+
+void QDeclarativeImplicitSizeItemPrivate::implicitHeightChanged()
+{
+    Q_Q(QDeclarativeImplicitSizeItem);
+    emit q->implicitHeightChanged();
+}
+
+QDeclarativeImplicitSizeItem::QDeclarativeImplicitSizeItem(QDeclarativeItem *parent)
+    : QDeclarativeItem(*(new QDeclarativeImplicitSizeItemPrivate), parent)
+{
+}
+
+QDeclarativeImplicitSizeItem::QDeclarativeImplicitSizeItem(QDeclarativeImplicitSizeItemPrivate &dd, QDeclarativeItem *parent)
+    : QDeclarativeItem(dd, parent)
+{
+}
+
+
+void QDeclarativeImplicitSizePaintedItemPrivate::implicitWidthChanged()
+{
+    Q_Q(QDeclarativeImplicitSizePaintedItem);
+    emit q->implicitWidthChanged();
+}
+
+void QDeclarativeImplicitSizePaintedItemPrivate::implicitHeightChanged()
+{
+    Q_Q(QDeclarativeImplicitSizePaintedItem);
+    emit q->implicitHeightChanged();
+}
+
+QDeclarativeImplicitSizePaintedItem::QDeclarativeImplicitSizePaintedItem(QDeclarativeItem *parent)
+    : QDeclarativePaintedItem(*(new QDeclarativeImplicitSizePaintedItemPrivate), parent)
+{
+}
+
+QDeclarativeImplicitSizePaintedItem::QDeclarativeImplicitSizePaintedItem(QDeclarativeImplicitSizePaintedItemPrivate &dd, QDeclarativeItem *parent)
+    : QDeclarativePaintedItem(dd, parent)
+{
+}
+
+QT_END_NAMESPACE
diff --git a/src/declarative/graphicsitems/qdeclarativeimplicitsizeitem_p.h b/src/declarative/graphicsitems/qdeclarativeimplicitsizeitem_p.h
new file mode 100644
index 0000000000..1863d95fa7
--- /dev/null
+++ b/src/declarative/graphicsitems/qdeclarativeimplicitsizeitem_p.h
@@ -0,0 +1,100 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 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 QDECLARATIVEIMPLICITSIZEITEM_H
+#define QDECLARATIVEIMPLICITSIZEITEM_H
+
+#include "qdeclarativepainteditem_p.h"
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+class QDeclarativeImplicitSizeItemPrivate;
+class Q_AUTOTEST_EXPORT QDeclarativeImplicitSizeItem : public QDeclarativeItem
+{
+    Q_OBJECT
+    Q_PROPERTY(qreal implicitWidth READ implicitWidth NOTIFY implicitWidthChanged REVISION 1)
+    Q_PROPERTY(qreal implicitHeight READ implicitHeight NOTIFY implicitHeightChanged REVISION 1)
+
+public:
+    QDeclarativeImplicitSizeItem(QDeclarativeItem *parent = 0);
+
+protected:
+    QDeclarativeImplicitSizeItem(QDeclarativeImplicitSizeItemPrivate &dd, QDeclarativeItem *parent);
+
+Q_SIGNALS:
+    Q_REVISION(1) void implicitWidthChanged();
+    Q_REVISION(1) void implicitHeightChanged();
+
+private:
+    Q_DISABLE_COPY(QDeclarativeImplicitSizeItem)
+    Q_DECLARE_PRIVATE_D(QGraphicsItem::d_ptr.data(), QDeclarativeImplicitSizeItem)
+};
+
+class QDeclarativeImplicitSizePaintedItemPrivate;
+class Q_AUTOTEST_EXPORT QDeclarativeImplicitSizePaintedItem : public QDeclarativePaintedItem
+{
+    Q_OBJECT
+    Q_PROPERTY(qreal implicitWidth READ implicitWidth NOTIFY implicitWidthChanged REVISION 1)
+    Q_PROPERTY(qreal implicitHeight READ implicitHeight NOTIFY implicitHeightChanged REVISION 1)
+
+public:
+    QDeclarativeImplicitSizePaintedItem(QDeclarativeItem *parent = 0);
+
+protected:
+    QDeclarativeImplicitSizePaintedItem(QDeclarativeImplicitSizePaintedItemPrivate &dd, QDeclarativeItem *parent);
+    virtual void drawContents(QPainter *, const QRect &) {};
+
+Q_SIGNALS:
+    Q_REVISION(1) void implicitWidthChanged();
+    Q_REVISION(1) void implicitHeightChanged();
+
+private:
+    Q_DISABLE_COPY(QDeclarativeImplicitSizePaintedItem)
+    Q_DECLARE_PRIVATE_D(QGraphicsItem::d_ptr.data(), QDeclarativeImplicitSizePaintedItem)
+};
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif // QDECLARATIVEIMPLICITSIZEITEM_H
diff --git a/src/declarative/graphicsitems/qdeclarativeimplicitsizeitem_p_p.h b/src/declarative/graphicsitems/qdeclarativeimplicitsizeitem_p_p.h
new file mode 100644
index 0000000000..0bb7163c62
--- /dev/null
+++ b/src/declarative/graphicsitems/qdeclarativeimplicitsizeitem_p_p.h
@@ -0,0 +1,90 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 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 QDECLARATIVEIMPLICITSIZEITEM_P_H
+#define QDECLARATIVEIMPLICITSIZEITEM_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include "private/qdeclarativeitem_p.h"
+#include "private/qdeclarativepainteditem_p_p.h"
+
+QT_BEGIN_NAMESPACE
+
+class QDeclarativeImplicitSizeItemPrivate : public QDeclarativeItemPrivate
+{
+    Q_DECLARE_PUBLIC(QDeclarativeImplicitSizeItem)
+
+public:
+    QDeclarativeImplicitSizeItemPrivate()
+    {
+    }
+
+    virtual void implicitWidthChanged();
+    virtual void implicitHeightChanged();
+};
+
+
+class QDeclarativeImplicitSizePaintedItemPrivate : public QDeclarativePaintedItemPrivate
+{
+    Q_DECLARE_PUBLIC(QDeclarativeImplicitSizePaintedItem)
+
+public:
+    QDeclarativeImplicitSizePaintedItemPrivate()
+    {
+    }
+
+    virtual void implicitWidthChanged();
+    virtual void implicitHeightChanged();
+};
+
+QT_END_NAMESPACE
+
+#endif // QDECLARATIVEIMPLICITSIZEITEM_P_H
diff --git a/src/declarative/graphicsitems/qdeclarativeitem.cpp b/src/declarative/graphicsitems/qdeclarativeitem.cpp
index 00e06bed3d..afa1b72262 100644
--- a/src/declarative/graphicsitems/qdeclarativeitem.cpp
+++ b/src/declarative/graphicsitems/qdeclarativeitem.cpp
@@ -3056,13 +3056,24 @@ void QDeclarativeItemPrivate::resetWidth()
     q->setImplicitWidth(q->implicitWidth());
 }
 
+void QDeclarativeItemPrivate::implicitWidthChanged()
+{
+    Q_Q(QDeclarativeItem);
+    emit q->implicitWidthChanged();
+}
+
+qreal QDeclarativeItemPrivate::implicitWidth() const
+{
+    return mImplicitWidth;
+}
+
 /*!
     Returns the width of the item that is implied by other properties that determine the content.
 */
 qreal QDeclarativeItem::implicitWidth() const
 {
     Q_D(const QDeclarativeItem);
-    return d->implicitWidth;
+    return d->implicitWidth();
 }
 
 /*!
@@ -3072,9 +3083,13 @@ qreal QDeclarativeItem::implicitWidth() const
 void QDeclarativeItem::setImplicitWidth(qreal w)
 {
     Q_D(QDeclarativeItem);
-    d->implicitWidth = w;
-    if (d->mWidth == w || widthValid())
+    bool changed = w != d->mImplicitWidth;
+    d->mImplicitWidth = w;
+    if (d->mWidth == w || widthValid()) {
+        if (changed)
+            d->implicitWidthChanged();
         return;
+    }
 
     qreal oldWidth = d->mWidth;
 
@@ -3083,6 +3098,9 @@ void QDeclarativeItem::setImplicitWidth(qreal w)
 
     geometryChanged(QRectF(x(), y(), width(), height()),
                     QRectF(x(), y(), oldWidth, height()));
+
+    if (changed)
+        d->implicitWidthChanged();
 }
 
 /*!
@@ -3164,25 +3182,77 @@ void QDeclarativeItemPrivate::resetHeight()
     q->setImplicitHeight(q->implicitHeight());
 }
 
+void QDeclarativeItemPrivate::implicitHeightChanged()
+{
+    Q_Q(QDeclarativeItem);
+    emit q->implicitHeightChanged();
+}
+
+qreal QDeclarativeItemPrivate::implicitHeight() const
+{
+    return mImplicitHeight;
+}
+
 /*!
     Returns the height of the item that is implied by other properties that determine the content.
 */
 qreal QDeclarativeItem::implicitHeight() const
 {
     Q_D(const QDeclarativeItem);
-    return d->implicitHeight;
+    return d->implicitHeight();
 }
 
 /*!
+    \qmlproperty real Item::implicitWidth
+    \qmlproperty real Item::implicitHeight
+    \since Quick 1.1
+
+    Defines the natural width or height of the Item if no \l width or \l height is specified.
+
+    The default implicit size for most items is 0x0, however some elements have an inherent
+    implicit size which cannot be overridden, e.g. Image, Text.
+
+    Setting the implicit size is useful for defining components that have a preferred size
+    based on their content, for example:
+
+    \code
+    // Label.qml
+    import QtQuick 1.1
+
+    Item {
+        property alias icon: image.source
+        property alias label: text.text
+        implicitWidth: text.implicitWidth + image.implicitWidth
+        implicitHeight: Math.max(text.implicitHeight, image.implicitHeight)
+        Image { id: image }
+        Text {
+            id: text
+            wrapMode: Text.Wrap
+            anchors.left: image.right; anchors.right: parent.right
+            anchors.verticalCenter: parent.verticalCenter
+        }
+    }
+    \endcode
+
+    \bold Note: using implicitWidth of Text or TextEdit and setting the width explicitly
+    incurs a performance penalty as the text must be layed out twice.
+*/
+
+
+/*!
     Sets the implied height of the item to \a h.
     This is the height implied by other properties that determine the content.
 */
 void QDeclarativeItem::setImplicitHeight(qreal h)
 {
     Q_D(QDeclarativeItem);
-    d->implicitHeight = h;
-    if (d->mHeight == h || heightValid())
+    bool changed = h != d->mImplicitHeight;
+    d->mImplicitHeight = h;
+    if (d->mHeight == h || heightValid()) {
+        if (changed)
+            d->implicitHeightChanged();
         return;
+    }
 
     qreal oldHeight = d->mHeight;
 
@@ -3191,6 +3261,9 @@ void QDeclarativeItem::setImplicitHeight(qreal h)
 
     geometryChanged(QRectF(x(), y(), width(), height()),
                     QRectF(x(), y(), width(), oldHeight));
+
+    if (changed)
+        d->implicitHeightChanged();
 }
 
 /*!
diff --git a/src/declarative/graphicsitems/qdeclarativeitem.h b/src/declarative/graphicsitems/qdeclarativeitem.h
index 0dd393767b..839b934903 100644
--- a/src/declarative/graphicsitems/qdeclarativeitem.h
+++ b/src/declarative/graphicsitems/qdeclarativeitem.h
@@ -92,6 +92,9 @@ class Q_DECLARATIVE_EXPORT QDeclarativeItem : public QGraphicsObject, public QDe
     Q_PROPERTY(TransformOrigin transformOrigin READ transformOrigin WRITE setTransformOrigin NOTIFY transformOriginChanged)
     Q_PROPERTY(QPointF transformOriginPoint READ transformOriginPoint) // transformOriginPoint is read-only for Item
     Q_PROPERTY(bool smooth READ smooth WRITE setSmooth NOTIFY smoothChanged)
+    Q_PROPERTY(qreal implicitWidth READ implicitWidth WRITE setImplicitWidth NOTIFY implicitWidthChanged REVISION 1)
+    Q_PROPERTY(qreal implicitHeight READ implicitHeight WRITE setImplicitHeight NOTIFY implicitHeightChanged REVISION 1)
+
     Q_ENUMS(TransformOrigin)
     Q_CLASSINFO("DefaultProperty", "data")
 
@@ -161,6 +164,8 @@ Q_SIGNALS:
     void transformOriginChanged(TransformOrigin);
     void smoothChanged(bool);
     void clipChanged(bool);
+    Q_REVISION(1) void implicitWidthChanged();
+    Q_REVISION(1) void implicitHeightChanged();
 
 protected:
     bool isComponentComplete() const;
diff --git a/src/declarative/graphicsitems/qdeclarativeitem_p.h b/src/declarative/graphicsitems/qdeclarativeitem_p.h
index fd9c7364f2..4303c0aec4 100644
--- a/src/declarative/graphicsitems/qdeclarativeitem_p.h
+++ b/src/declarative/graphicsitems/qdeclarativeitem_p.h
@@ -126,7 +126,7 @@ public:
       widthValid(false), heightValid(false),
       componentComplete(true), keepMouse(false),
       smooth(false), transformOriginDirty(true), doneEventPreHandler(false), keyHandler(0),
-      mWidth(0), mHeight(0), implicitWidth(0), implicitHeight(0), hadSubFocusItem(false)
+      mWidth(0), mHeight(0), mImplicitWidth(0), mImplicitHeight(0), hadSubFocusItem(false)
     {
         QGraphicsItemPrivate::acceptedMouseButtons = 0;
         isDeclarativeItem = 1;
@@ -157,6 +157,11 @@ public:
     void setHeight(qreal);
     void resetHeight();
 
+    virtual qreal implicitWidth() const;
+    virtual qreal implicitHeight() const;
+    virtual void implicitWidthChanged();
+    virtual void implicitHeightChanged();
+
     QDeclarativeListProperty<QObject> data();
     QDeclarativeListProperty<QObject> resources();
 
@@ -272,8 +277,8 @@ public:
 
     qreal mWidth;
     qreal mHeight;
-    qreal implicitWidth;
-    qreal implicitHeight;
+    qreal mImplicitWidth;
+    qreal mImplicitHeight;
 
     bool hadSubFocusItem;
 
diff --git a/src/declarative/graphicsitems/qdeclarativeitemsmodule.cpp b/src/declarative/graphicsitems/qdeclarativeitemsmodule.cpp
index 32c71dd269..33953977a1 100644
--- a/src/declarative/graphicsitems/qdeclarativeitemsmodule.cpp
+++ b/src/declarative/graphicsitems/qdeclarativeitemsmodule.cpp
@@ -179,6 +179,7 @@ void QDeclarativeItemModule::defineModule()
     qmlRegisterType<QDeclarativePinchArea>("QtQuick",1,1,"PinchArea");
     qmlRegisterType<QDeclarativePinch>("QtQuick",1,1,"Pinch");
     qmlRegisterType<QDeclarativePinchEvent>();
+    qmlRegisterType<QDeclarativeItem,1>("QtQuick",1,1,"Item");
     qmlRegisterType<QDeclarativeFlickable,1>("QtQuick",1,1,"Flickable");
     qmlRegisterType<QDeclarativeListView,1>("QtQuick",1,1,"ListView");
     qmlRegisterType<QDeclarativeGridView,1>("QtQuick",1,1,"GridView");
@@ -190,6 +191,10 @@ void QDeclarativeItemModule::defineModule()
 #ifndef QT_NO_LINEEDIT
     qmlRegisterType<QDeclarativeTextInput,1>("QtQuick",1,1,"TextInput");
 #endif
+    qmlRegisterRevision<QDeclarativeImplicitSizeItem,0>("QtQuick",1,0);
+    qmlRegisterRevision<QDeclarativeImplicitSizeItem,1>("QtQuick",1,1);
+    qmlRegisterRevision<QDeclarativeImplicitSizePaintedItem,0>("QtQuick",1,0);
+    qmlRegisterRevision<QDeclarativeImplicitSizePaintedItem,1>("QtQuick",1,1);
 
 #ifndef QT_NO_IMPORT_QT47_QML
 #ifdef QT_NO_MOVIE
diff --git a/src/declarative/graphicsitems/qdeclarativeloader.cpp b/src/declarative/graphicsitems/qdeclarativeloader.cpp
index 86e438f925..86d64043f4 100644
--- a/src/declarative/graphicsitems/qdeclarativeloader.cpp
+++ b/src/declarative/graphicsitems/qdeclarativeloader.cpp
@@ -216,7 +216,7 @@ void QDeclarativeLoaderPrivate::initResize()
 */
 
 QDeclarativeLoader::QDeclarativeLoader(QDeclarativeItem *parent)
-  : QDeclarativeItem(*(new QDeclarativeLoaderPrivate), parent)
+  : QDeclarativeImplicitSizeItem(*(new QDeclarativeLoaderPrivate), parent)
 {
     Q_D(QDeclarativeLoader);
     d->flags |= QGraphicsItem::ItemIsFocusScope;
diff --git a/src/declarative/graphicsitems/qdeclarativeloader_p.h b/src/declarative/graphicsitems/qdeclarativeloader_p.h
index 1fe7ae7449..96b883c330 100644
--- a/src/declarative/graphicsitems/qdeclarativeloader_p.h
+++ b/src/declarative/graphicsitems/qdeclarativeloader_p.h
@@ -42,7 +42,7 @@
 #ifndef QDECLARATIVELOADER_H
 #define QDECLARATIVELOADER_H
 
-#include "qdeclarativeitem.h"
+#include "qdeclarativeimplicitsizeitem_p.h"
 
 QT_BEGIN_HEADER
 
@@ -51,7 +51,7 @@ QT_BEGIN_NAMESPACE
 QT_MODULE(Declarative)
 
 class QDeclarativeLoaderPrivate;
-class Q_AUTOTEST_EXPORT QDeclarativeLoader : public QDeclarativeItem
+class Q_AUTOTEST_EXPORT QDeclarativeLoader : public QDeclarativeImplicitSizeItem
 {
     Q_OBJECT
     Q_ENUMS(Status)
diff --git a/src/declarative/graphicsitems/qdeclarativeloader_p_p.h b/src/declarative/graphicsitems/qdeclarativeloader_p_p.h
index 81ca66dc0e..7f1a6daa82 100644
--- a/src/declarative/graphicsitems/qdeclarativeloader_p_p.h
+++ b/src/declarative/graphicsitems/qdeclarativeloader_p_p.h
@@ -55,13 +55,13 @@
 
 #include "private/qdeclarativeloader_p.h"
 
-#include "private/qdeclarativeitem_p.h"
+#include "private/qdeclarativeimplicitsizeitem_p_p.h"
 #include "private/qdeclarativeitemchangelistener_p.h"
 
 QT_BEGIN_NAMESPACE
 
 class QDeclarativeContext;
-class QDeclarativeLoaderPrivate : public QDeclarativeItemPrivate, public QDeclarativeItemChangeListener
+class QDeclarativeLoaderPrivate : public QDeclarativeImplicitSizeItemPrivate, public QDeclarativeItemChangeListener
 {
     Q_DECLARE_PUBLIC(QDeclarativeLoader)
 
diff --git a/src/declarative/graphicsitems/qdeclarativepositioners.cpp b/src/declarative/graphicsitems/qdeclarativepositioners.cpp
index a2a167e0de..9450647360 100644
--- a/src/declarative/graphicsitems/qdeclarativepositioners.cpp
+++ b/src/declarative/graphicsitems/qdeclarativepositioners.cpp
@@ -111,14 +111,14 @@ void QDeclarativeBasePositioner::graphicsWidgetGeometryChanged()
     Note that the subclass is responsible for adding the spacing in between items.
 */
 QDeclarativeBasePositioner::QDeclarativeBasePositioner(PositionerType at, QDeclarativeItem *parent)
-    : QDeclarativeItem(*(new QDeclarativeBasePositionerPrivate), parent)
+    : QDeclarativeImplicitSizeItem(*(new QDeclarativeBasePositionerPrivate), parent)
 {
     Q_D(QDeclarativeBasePositioner);
     d->init(at);
 }
 
 QDeclarativeBasePositioner::QDeclarativeBasePositioner(QDeclarativeBasePositionerPrivate &dd, PositionerType at, QDeclarativeItem *parent)
-    : QDeclarativeItem(dd, parent)
+    : QDeclarativeImplicitSizeItem(dd, parent)
 {
     Q_D(QDeclarativeBasePositioner);
     d->init(at);
diff --git a/src/declarative/graphicsitems/qdeclarativepositioners_p.h b/src/declarative/graphicsitems/qdeclarativepositioners_p.h
index 1306fcd1dc..6b45e49ffe 100644
--- a/src/declarative/graphicsitems/qdeclarativepositioners_p.h
+++ b/src/declarative/graphicsitems/qdeclarativepositioners_p.h
@@ -42,7 +42,7 @@
 #ifndef QDECLARATIVELAYOUTS_H
 #define QDECLARATIVELAYOUTS_H
 
-#include "qdeclarativeitem.h"
+#include "qdeclarativeimplicitsizeitem_p.h"
 
 #include <private/qdeclarativestate_p.h>
 #include <private/qpodvector_p.h>
@@ -57,7 +57,7 @@ QT_BEGIN_NAMESPACE
 QT_MODULE(Declarative)
 class QDeclarativeBasePositionerPrivate;
 
-class Q_DECLARATIVE_PRIVATE_EXPORT QDeclarativeBasePositioner : public QDeclarativeItem
+class Q_DECLARATIVE_PRIVATE_EXPORT QDeclarativeBasePositioner : public QDeclarativeImplicitSizeItem
 {
     Q_OBJECT
 
diff --git a/src/declarative/graphicsitems/qdeclarativepositioners_p_p.h b/src/declarative/graphicsitems/qdeclarativepositioners_p_p.h
index c6535a7a9c..df105c660f 100644
--- a/src/declarative/graphicsitems/qdeclarativepositioners_p_p.h
+++ b/src/declarative/graphicsitems/qdeclarativepositioners_p_p.h
@@ -55,7 +55,7 @@
 
 #include "private/qdeclarativepositioners_p.h"
 
-#include "private/qdeclarativeitem_p.h"
+#include "private/qdeclarativeimplicitsizeitem_p_p.h"
 
 #include <qdeclarativestate_p.h>
 #include <qdeclarativetransitionmanager_p_p.h>
@@ -67,7 +67,7 @@
 #include <QDebug>
 
 QT_BEGIN_NAMESPACE
-class QDeclarativeBasePositionerPrivate : public QDeclarativeItemPrivate, public QDeclarativeItemChangeListener
+class QDeclarativeBasePositionerPrivate : public QDeclarativeImplicitSizeItemPrivate, public QDeclarativeItemChangeListener
 {
     Q_DECLARE_PUBLIC(QDeclarativeBasePositioner)
 
diff --git a/src/declarative/graphicsitems/qdeclarativetext.cpp b/src/declarative/graphicsitems/qdeclarativetext.cpp
index 64925d03ee..d424e30c0e 100644
--- a/src/declarative/graphicsitems/qdeclarativetext.cpp
+++ b/src/declarative/graphicsitems/qdeclarativetext.cpp
@@ -92,7 +92,7 @@ QDeclarativeTextPrivate::QDeclarativeTextPrivate()
   vAlign(QDeclarativeText::AlignTop), elideMode(QDeclarativeText::ElideNone),
   format(QDeclarativeText::AutoText), wrapMode(QDeclarativeText::NoWrap), lineCount(1), truncated(false), maximumLineCount(INT_MAX),
   maximumLineCountValid(false), imageCacheDirty(true), updateOnComponentComplete(true), richText(false), singleline(false),
-  cacheAllTextAsImage(true), internalWidthUpdate(false), doc(0)
+  cacheAllTextAsImage(true), internalWidthUpdate(false), requireImplicitWidth(false), naturalWidth(0), doc(0)
 {
     cacheAllTextAsImage = enableImageCache();
     QGraphicsItemPrivate::acceptedMouseButtons = Qt::LeftButton;
@@ -179,6 +179,18 @@ QDeclarativeTextPrivate::~QDeclarativeTextPrivate()
 {
 }
 
+qreal QDeclarativeTextPrivate::implicitWidth() const
+{
+    if (!requireImplicitWidth) {
+        // We don't calculate implicitWidth unless it is required.
+        // We need to force a size update now to ensure implicitWidth is calculated
+        QDeclarativeTextPrivate *me = const_cast<QDeclarativeTextPrivate*>(this);
+        me->requireImplicitWidth = true;
+        me->updateSize();
+    }
+    return mImplicitWidth;
+}
+
 void QDeclarativeTextPrivate::updateLayout()
 {
     Q_Q(QDeclarativeText);
@@ -222,12 +234,20 @@ void QDeclarativeTextPrivate::updateSize()
         return;
     }
 
+    if (!requireImplicitWidth) {
+        emit q->implicitWidthChanged();
+        // if the implicitWidth is used, then updateSize() has already been called (recursively)
+        if (requireImplicitWidth)
+            return;
+    }
+
     invalidateImageCache();
 
     QFontMetrics fm(font);
     if (text.isEmpty()) {
         q->setImplicitWidth(0);
         q->setImplicitHeight(fm.height());
+        paintedSize = QSize(0, fm.height());
         emit q->paintedSizeChanged();
         q->update();
         return;
@@ -251,6 +271,10 @@ void QDeclarativeTextPrivate::updateSize()
         QTextOption option((Qt::Alignment)int(hAlign | vAlign));
         option.setWrapMode(QTextOption::WrapMode(wrapMode));
         doc->setDefaultTextOption(option);
+        if (requireImplicitWidth && q->widthValid()) {
+            doc->setTextWidth(-1);
+            naturalWidth = doc->idealWidth();
+        }
         if (wrapMode != QDeclarativeText::NoWrap && q->widthValid())
             doc->setTextWidth(q->width());
         else
@@ -275,10 +299,16 @@ void QDeclarativeTextPrivate::updateSize()
 
     //### need to comfirm cost of always setting these for richText
     internalWidthUpdate = true;
-    q->setImplicitWidth(size.width());
+    if (!q->widthValid())
+        q->setImplicitWidth(size.width());
+    else if (requireImplicitWidth)
+        q->setImplicitWidth(naturalWidth);
     internalWidthUpdate = false;
     q->setImplicitHeight(size.height());
-    emit q->paintedSizeChanged();
+    if (paintedSize != size) {
+        paintedSize = size;
+        emit q->paintedSizeChanged();
+    }
     q->update();
 }
 
@@ -318,6 +348,22 @@ QSize QDeclarativeTextPrivate::setupTextLayout()
     qreal elideWidth = fm.width(elideChar);
     elidePos = QPointF();
 
+    if (requireImplicitWidth && q->widthValid()) {
+        // requires an extra layout
+        layout.beginLayout();
+        forever {
+            QTextLine line = layout.createLine();
+            if (!line.isValid())
+                break;
+        }
+        layout.endLayout();
+        naturalWidth = 0;
+        for (int i = 0; i < layout.lineCount(); ++i) {
+            QTextLine line = layout.lineAt(i);
+            naturalWidth = qMax(naturalWidth, line.naturalTextWidth());
+        }
+    }
+
     if (maximumLineCountValid) {
         layout.beginLayout();
         int y = 0;
@@ -383,6 +429,8 @@ QSize QDeclarativeTextPrivate::setupTextLayout()
     }
 
     qreal layoutWidth = q->widthValid() ? q->width() : widthUsed;
+    if (!q->widthValid())
+        naturalWidth = layoutWidth;
 
     qreal x = 0;
     for (int i = 0; i < layout.lineCount(); ++i) {
@@ -660,7 +708,7 @@ QPixmap QDeclarativeTextPrivate::drawOutline(const QPixmap &source, const QPixma
     \sa {declarative/text/fonts}{Fonts example}
 */
 QDeclarativeText::QDeclarativeText(QDeclarativeItem *parent)
-  : QDeclarativeItem(*(new QDeclarativeTextPrivate), parent)
+  : QDeclarativeImplicitSizeItem(*(new QDeclarativeTextPrivate), parent)
 {
 }
 
@@ -1331,7 +1379,8 @@ void QDeclarativeText::geometryChanged(const QRectF &newGeometry, const QRectF &
 */
 qreal QDeclarativeText::paintedWidth() const
 {
-    return implicitWidth();
+    Q_D(const QDeclarativeText);
+    return d->paintedSize.width();
 }
 
 /*!
@@ -1342,7 +1391,8 @@ qreal QDeclarativeText::paintedWidth() const
 */
 qreal QDeclarativeText::paintedHeight() const
 {
-    return implicitHeight();
+    Q_D(const QDeclarativeText);
+    return d->paintedSize.height();
 }
 
 /*!
diff --git a/src/declarative/graphicsitems/qdeclarativetext_p.h b/src/declarative/graphicsitems/qdeclarativetext_p.h
index 6468a779fa..ec33b84a5a 100644
--- a/src/declarative/graphicsitems/qdeclarativetext_p.h
+++ b/src/declarative/graphicsitems/qdeclarativetext_p.h
@@ -43,7 +43,7 @@
 #define QDECLARATIVETEXT_H
 
 #include <QtGui/qtextoption.h>
-#include "qdeclarativeitem.h"
+#include "qdeclarativeimplicitsizeitem_p.h"
 
 #include <private/qdeclarativeglobal_p.h>
 
@@ -53,7 +53,7 @@ QT_BEGIN_NAMESPACE
 
 QT_MODULE(Declarative)
 class QDeclarativeTextPrivate;
-class Q_DECLARATIVE_PRIVATE_EXPORT QDeclarativeText : public QDeclarativeItem
+class Q_DECLARATIVE_PRIVATE_EXPORT QDeclarativeText : public QDeclarativeImplicitSizeItem
 {
     Q_OBJECT
     Q_ENUMS(HAlignment)
diff --git a/src/declarative/graphicsitems/qdeclarativetext_p_p.h b/src/declarative/graphicsitems/qdeclarativetext_p_p.h
index fe2b0428c8..bae2d8576a 100644
--- a/src/declarative/graphicsitems/qdeclarativetext_p_p.h
+++ b/src/declarative/graphicsitems/qdeclarativetext_p_p.h
@@ -54,7 +54,7 @@
 //
 
 #include "qdeclarativeitem.h"
-#include "private/qdeclarativeitem_p.h"
+#include "private/qdeclarativeimplicitsizeitem_p_p.h"
 #include "private/qdeclarativetextlayout_p.h"
 
 #include <qdeclarative.h>
@@ -66,7 +66,7 @@ QT_BEGIN_NAMESPACE
 class QTextLayout;
 class QTextDocumentWithImageResources;
 
-class QDeclarativeTextPrivate : public QDeclarativeItemPrivate
+class QDeclarativeTextPrivate : public QDeclarativeImplicitSizeItemPrivate
 {
     Q_DECLARE_PUBLIC(QDeclarativeText)
 public:
@@ -107,9 +107,12 @@ public:
     bool singleline:1;
     bool cacheAllTextAsImage:1;
     bool internalWidthUpdate:1;
+    bool requireImplicitWidth:1;
 
     QSize layedOutTextSize;
-    
+    QSize paintedSize;
+    qreal naturalWidth;
+    virtual qreal implicitWidth() const;
     void ensureDoc();
     QPixmap textDocumentImage(bool drawStyle);
     QTextDocumentWithImageResources *doc;
diff --git a/src/declarative/graphicsitems/qdeclarativetextedit.cpp b/src/declarative/graphicsitems/qdeclarativetextedit.cpp
index 280c8c3d2f..959d655734 100644
--- a/src/declarative/graphicsitems/qdeclarativetextedit.cpp
+++ b/src/declarative/graphicsitems/qdeclarativetextedit.cpp
@@ -113,7 +113,7 @@ TextEdit {
     \a link string provides access to the particular link.
 */
 QDeclarativeTextEdit::QDeclarativeTextEdit(QDeclarativeItem *parent)
-: QDeclarativePaintedItem(*(new QDeclarativeTextEditPrivate), parent)
+: QDeclarativeImplicitSizePaintedItem(*(new QDeclarativeTextEditPrivate), parent)
 {
     Q_D(QDeclarativeTextEdit);
     d->init();
@@ -559,7 +559,8 @@ int QDeclarativeTextEdit::lineCount() const
 */
 qreal QDeclarativeTextEdit::paintedWidth() const
 {
-    return implicitWidth();
+    Q_D(const QDeclarativeTextEdit);
+    return d->paintedSize.width();
 }
 
 /*!
@@ -570,7 +571,8 @@ qreal QDeclarativeTextEdit::paintedWidth() const
 */
 qreal QDeclarativeTextEdit::paintedHeight() const
 {
-    return implicitHeight();
+    Q_D(const QDeclarativeTextEdit);
+    return d->paintedSize.height();
 }
 
 /*!
@@ -1482,6 +1484,17 @@ QRectF QDeclarativeTextEdit::boundingRect() const
     return r.translated(0,d->yoff);
 }
 
+qreal QDeclarativeTextEditPrivate::implicitWidth() const
+{
+    Q_Q(const QDeclarativeTextEdit);
+    if (!requireImplicitWidth) {
+        // We don't calculate implicitWidth unless it is required.
+        // We need to force a size update now to ensure implicitWidth is calculated
+        const_cast<QDeclarativeTextEditPrivate*>(this)->requireImplicitWidth = true;
+        const_cast<QDeclarativeTextEdit*>(q)->updateSize();
+    }
+    return mImplicitWidth;
+}
 
 //### we should perhaps be a bit smarter here -- depending on what has changed, we shouldn't
 //    need to do all the calculations each time
@@ -1489,16 +1502,27 @@ void QDeclarativeTextEdit::updateSize()
 {
     Q_D(QDeclarativeTextEdit);
     if (isComponentComplete()) {
-        QFontMetrics fm = QFontMetrics(d->font);
-        int dy = height();
+        qreal naturalWidth = d->mImplicitWidth;
         // ### assumes that if the width is set, the text will fill to edges
         // ### (unless wrap is false, then clipping will occur)
         if (widthValid()) {
+            if (!d->requireImplicitWidth) {
+                emit implicitWidthChanged();
+                // if the implicitWidth is used, then updateSize() has already been called (recursively)
+                if (d->requireImplicitWidth)
+                    return;
+            }
+            if (d->requireImplicitWidth) {
+                d->document->setTextWidth(-1);
+                naturalWidth = d->document->idealWidth();
+            }
             if (d->document->textWidth() != width())
                 d->document->setTextWidth(width());
         } else {
             d->document->setTextWidth(-1);
         }
+        QFontMetrics fm = QFontMetrics(d->font);
+        int dy = height();
         dy -= (int)d->document->size().height();
 
         int nyoff;
@@ -1523,12 +1547,15 @@ void QDeclarativeTextEdit::updateSize()
         if (!widthValid() && d->document->textWidth() != newWidth)
             d->document->setTextWidth(newWidth); // ### Text does not align if width is not set (QTextDoc bug)
         // ### Setting the implicitWidth triggers another updateSize(), and unless there are bindings nothing has changed.
-        setImplicitWidth(newWidth);
+        if (!widthValid())
+            setImplicitWidth(newWidth);
+        else if (d->requireImplicitWidth)
+            setImplicitWidth(naturalWidth);
         qreal newHeight = d->document->isEmpty() ? fm.height() : (int)d->document->size().height();
         setImplicitHeight(newHeight);
 
-        setContentsSize(QSize(newWidth, newHeight));
-
+        d->paintedSize = QSize(newWidth, newHeight);
+        setContentsSize(d->paintedSize);
         emit paintedSizeChanged();
     } else {
         d->dirty = true;
diff --git a/src/declarative/graphicsitems/qdeclarativetextedit_p.h b/src/declarative/graphicsitems/qdeclarativetextedit_p.h
index c534623cdd..276d570455 100644
--- a/src/declarative/graphicsitems/qdeclarativetextedit_p.h
+++ b/src/declarative/graphicsitems/qdeclarativetextedit_p.h
@@ -43,7 +43,7 @@
 #define QDECLARATIVETEXTEDIT_H
 
 #include "private/qdeclarativetext_p.h"
-#include "private/qdeclarativepainteditem_p.h"
+#include "private/qdeclarativeimplicitsizeitem_p.h"
 
 #include <QtGui/qtextdocument.h>
 #include <QtGui/qtextoption.h>
@@ -58,7 +58,7 @@ QT_MODULE(Declarative)
 
 
 class QDeclarativeTextEditPrivate;
-class Q_AUTOTEST_EXPORT QDeclarativeTextEdit : public QDeclarativePaintedItem
+class Q_AUTOTEST_EXPORT QDeclarativeTextEdit : public QDeclarativeImplicitSizePaintedItem
 {
     Q_OBJECT
     Q_ENUMS(VAlignment)
diff --git a/src/declarative/graphicsitems/qdeclarativetextedit_p_p.h b/src/declarative/graphicsitems/qdeclarativetextedit_p_p.h
index 13fee50773..98b3c6d582 100644
--- a/src/declarative/graphicsitems/qdeclarativetextedit_p_p.h
+++ b/src/declarative/graphicsitems/qdeclarativetextedit_p_p.h
@@ -54,7 +54,7 @@
 //
 
 #include "qdeclarativeitem.h"
-#include "private/qdeclarativepainteditem_p_p.h"
+#include "private/qdeclarativeimplicitsizeitem_p_p.h"
 
 #include <qdeclarative.h>
 
@@ -62,7 +62,7 @@ QT_BEGIN_NAMESPACE
 class QTextLayout;
 class QTextDocument;
 class QTextControl;
-class QDeclarativeTextEditPrivate : public QDeclarativePaintedItemPrivate
+class QDeclarativeTextEditPrivate : public QDeclarativeImplicitSizePaintedItemPrivate
 {
     Q_DECLARE_PUBLIC(QDeclarativeTextEdit)
 
@@ -70,8 +70,8 @@ public:
     QDeclarativeTextEditPrivate()
       : color("black"), hAlign(QDeclarativeTextEdit::AlignLeft), vAlign(QDeclarativeTextEdit::AlignTop),
       imgDirty(true), dirty(false), richText(false), cursorVisible(false), focusOnPress(true),
-      showInputPanelOnFocus(true), clickCausedFocus(false), persistentSelection(true), textMargin(0.0),
-      lastSelectionStart(0), lastSelectionEnd(0), cursorComponent(0), cursor(0),
+      showInputPanelOnFocus(true), clickCausedFocus(false), persistentSelection(true), requireImplicitWidth(false),
+      textMargin(0.0), lastSelectionStart(0), lastSelectionEnd(0), cursorComponent(0), cursor(0),
       format(QDeclarativeTextEdit::AutoText), document(0), wrapMode(QDeclarativeTextEdit::NoWrap),
       selectByMouse(false), canPaste(false),
       yoff(0)
@@ -88,6 +88,7 @@ public:
     void updateDefaultTextOption();
     void relayoutDocument();
     void updateSelection();
+    qreal implicitWidth() const;
     void focusChanged(bool);
 
     QString text;
@@ -110,6 +111,7 @@ public:
     bool showInputPanelOnFocus : 1;
     bool clickCausedFocus : 1;
     bool persistentSelection : 1;
+    bool requireImplicitWidth:1;
     qreal textMargin;
     int lastSelectionStart;
     int lastSelectionEnd;
@@ -123,6 +125,7 @@ public:
     bool selectByMouse;
     bool canPaste;
     int yoff;
+    QSize paintedSize;
 };
 
 QT_END_NAMESPACE
diff --git a/src/declarative/graphicsitems/qdeclarativetextinput.cpp b/src/declarative/graphicsitems/qdeclarativetextinput.cpp
index bd961f64f7..911c68c2d8 100644
--- a/src/declarative/graphicsitems/qdeclarativetextinput.cpp
+++ b/src/declarative/graphicsitems/qdeclarativetextinput.cpp
@@ -76,7 +76,7 @@ QT_BEGIN_NAMESPACE
     \sa TextEdit, Text, {declarative/text/textselection}{Text Selection example}
 */
 QDeclarativeTextInput::QDeclarativeTextInput(QDeclarativeItem* parent)
-    : QDeclarativePaintedItem(*(new QDeclarativeTextInputPrivate), parent)
+    : QDeclarativeImplicitSizePaintedItem(*(new QDeclarativeTextInputPrivate), parent)
 {
     Q_D(QDeclarativeTextInput);
     d->init();
diff --git a/src/declarative/graphicsitems/qdeclarativetextinput_p.h b/src/declarative/graphicsitems/qdeclarativetextinput_p.h
index 7406fee620..543f7a8b84 100644
--- a/src/declarative/graphicsitems/qdeclarativetextinput_p.h
+++ b/src/declarative/graphicsitems/qdeclarativetextinput_p.h
@@ -43,7 +43,7 @@
 #define QDECLARATIVETEXTINPUT_H
 
 #include "private/qdeclarativetext_p.h"
-#include "private/qdeclarativepainteditem_p.h"
+#include "private/qdeclarativeimplicitsizeitem_p.h"
 
 #include <QGraphicsSceneMouseEvent>
 #include <QIntValidator>
@@ -58,7 +58,7 @@ QT_MODULE(Declarative)
 
 class QDeclarativeTextInputPrivate;
 class QValidator;
-class Q_AUTOTEST_EXPORT QDeclarativeTextInput : public QDeclarativePaintedItem
+class Q_AUTOTEST_EXPORT QDeclarativeTextInput : public QDeclarativeImplicitSizePaintedItem
 {
     Q_OBJECT
     Q_ENUMS(HAlignment)
diff --git a/src/declarative/graphicsitems/qdeclarativetextinput_p_p.h b/src/declarative/graphicsitems/qdeclarativetextinput_p_p.h
index 22f452aa5c..9644410961 100644
--- a/src/declarative/graphicsitems/qdeclarativetextinput_p_p.h
+++ b/src/declarative/graphicsitems/qdeclarativetextinput_p_p.h
@@ -44,7 +44,7 @@
 
 #include "private/qdeclarativetextinput_p.h"
 
-#include "private/qdeclarativepainteditem_p_p.h"
+#include "private/qdeclarativeimplicitsizeitem_p_p.h"
 
 #include <qdeclarative.h>
 
@@ -66,7 +66,7 @@
 
 QT_BEGIN_NAMESPACE
 
-class QDeclarativeTextInputPrivate : public QDeclarativePaintedItemPrivate
+class QDeclarativeTextInputPrivate : public QDeclarativeImplicitSizePaintedItemPrivate
 {
     Q_DECLARE_PUBLIC(QDeclarativeTextInput)
 public:
diff --git a/tests/auto/declarative/qdeclarativeitem/tst_qdeclarativeitem.cpp b/tests/auto/declarative/qdeclarativeitem/tst_qdeclarativeitem.cpp
index dbed7998f3..e636383e37 100644
--- a/tests/auto/declarative/qdeclarativeitem/tst_qdeclarativeitem.cpp
+++ b/tests/auto/declarative/qdeclarativeitem/tst_qdeclarativeitem.cpp
@@ -83,6 +83,9 @@ private slots:
     void mouseFocus();
 
     void transformCrash();
+    void implicitSize();
+    void testQtQuick11Attributes();
+    void testQtQuick11Attributes_data();
 
 private:
     template<typename T>
@@ -915,6 +918,83 @@ void tst_QDeclarativeItem::transformCrash()
     delete canvas;
 }
 
+void tst_QDeclarativeItem::implicitSize()
+{
+    QDeclarativeView *canvas = new QDeclarativeView(0);
+    canvas->setSource(QUrl::fromLocalFile(SRCDIR "/data/implicitsize.qml"));
+    canvas->show();
+
+    QDeclarativeItem *item = qobject_cast<QDeclarativeItem*>(canvas->rootObject());
+    QVERIFY(item);
+    QCOMPARE(item->width(), qreal(80));
+    QCOMPARE(item->height(), qreal(60));
+
+    QCOMPARE(item->implicitWidth(), qreal(200));
+    QCOMPARE(item->implicitHeight(), qreal(100));
+
+    QMetaObject::invokeMethod(item, "resetSize");
+
+    QCOMPARE(item->width(), qreal(200));
+    QCOMPARE(item->height(), qreal(100));
+
+    QMetaObject::invokeMethod(item, "changeImplicit");
+
+    QCOMPARE(item->implicitWidth(), qreal(150));
+    QCOMPARE(item->implicitHeight(), qreal(80));
+    QCOMPARE(item->width(), qreal(150));
+    QCOMPARE(item->height(), qreal(80));
+
+    delete canvas;
+}
+
+void tst_QDeclarativeItem::testQtQuick11Attributes()
+{
+    QFETCH(QString, code);
+    QFETCH(QString, warning);
+    QFETCH(QString, error);
+
+    QDeclarativeEngine engine;
+    QObject *obj;
+
+    QDeclarativeComponent valid(&engine);
+    valid.setData("import QtQuick 1.1; Item { " + code.toUtf8() + " }", QUrl(""));
+    obj = valid.create();
+    QVERIFY(obj);
+    QVERIFY(valid.errorString().isEmpty());
+    delete obj;
+
+    QDeclarativeComponent invalid(&engine);
+    invalid.setData("import QtQuick 1.0; Item { " + code.toUtf8() + " }", QUrl(""));
+    QTest::ignoreMessage(QtWarningMsg, warning.toUtf8());
+    obj = invalid.create();
+    QCOMPARE(invalid.errorString(), error);
+    delete obj;
+}
+
+void tst_QDeclarativeItem::testQtQuick11Attributes_data()
+{
+    QTest::addColumn<QString>("code");
+    QTest::addColumn<QString>("warning");
+    QTest::addColumn<QString>("error");
+
+    QTest::newRow("implicitWidth") << "implicitWidth: 100"
+        << "QDeclarativeComponent: Component is not ready"
+        << ":1 Property \"implicitWidth\" not available in QtQuick/Item 1.0\n";
+
+    QTest::newRow("implicitHeight") << "implicitHeight: 100"
+        << "QDeclarativeComponent: Component is not ready"
+        << ":1 Property \"implicitHeight\" not available in QtQuick/Item 1.0\n";
+
+    QTest::newRow("onImplicitWidthChanged") << "onImplicitWidthChanged: x"
+        << "QDeclarativeComponent: Component is not ready"
+        << ":1 Signal \"onImplicitWidthChanged\" not available in QtQuick/Item 1.0\n";
+
+    QTest::newRow("onImplicitHeightChanged") << "onImplicitHeightChanged: x"
+        << "QDeclarativeComponent: Component is not ready"
+        << ":1 Signal \"onImplicitHeightChanged\" not available in QtQuick/Item 1.0\n";
+}
+
+
 template<typename T>
 T *tst_QDeclarativeItem::findItem(QGraphicsObject *parent, const QString &objectName)
 {
diff --git a/tests/auto/declarative/qdeclarativetext/tst_qdeclarativetext.cpp b/tests/auto/declarative/qdeclarativetext/tst_qdeclarativetext.cpp
index ae521a5e30..faea44897c 100644
--- a/tests/auto/declarative/qdeclarativetext/tst_qdeclarativetext.cpp
+++ b/tests/auto/declarative/qdeclarativetext/tst_qdeclarativetext.cpp
@@ -101,6 +101,8 @@ private slots:
     void clickLink();
 
     void QTBUG_12291();
+    void implicitSize_data();
+    void implicitSize();
 
 private:
     QStringList standard;
@@ -1050,6 +1052,33 @@ void tst_qdeclarativetext::lineCount()
     QCOMPARE(myText->maximumLineCount(), 2);
 }
 
+void tst_qdeclarativetext::implicitSize_data()
+{
+    QTest::addColumn<QString>("text");
+    QTest::addColumn<QString>("wrap");
+    QTest::newRow("plain") << "The quick red fox jumped over the lazy brown dog" << "Text.NoWrap";
+    QTest::newRow("richtext") << "<b>The quick red fox jumped over the lazy brown dog</b>" << "Text.NoWrap";
+    QTest::newRow("plain_wrap") << "The quick red fox jumped over the lazy brown dog" << "Text.Wrap";
+    QTest::newRow("richtext_wrap") << "<b>The quick red fox jumped over the lazy brown dog</b>" << "Text.Wrap";
+}
+
+void tst_qdeclarativetext::implicitSize()
+{
+    QFETCH(QString, text);
+    QFETCH(QString, wrap);
+    QString componentStr = "import QtQuick 1.1\nText { text: \"" + text + "\"; width: 50; wrapMode: " + wrap + " }";
+    QDeclarativeComponent textComponent(&engine);
+    textComponent.setData(componentStr.toLatin1(), QUrl::fromLocalFile(""));
+    QDeclarativeText *textObject = qobject_cast<QDeclarativeText*>(textComponent.create());
+
+    QVERIFY(textObject->width() < textObject->implicitWidth());
+    QVERIFY(textObject->height() == textObject->implicitHeight());
+
+    textObject->resetWidth();
+    QVERIFY(textObject->width() == textObject->implicitWidth());
+    QVERIFY(textObject->height() == textObject->implicitHeight());
+}
+
 QTEST_MAIN(tst_qdeclarativetext)
 
 #include "tst_qdeclarativetext.moc"
diff --git a/tests/auto/declarative/qdeclarativetextedit/tst_qdeclarativetextedit.cpp b/tests/auto/declarative/qdeclarativetextedit/tst_qdeclarativetextedit.cpp
index 89e8fec2b3..582b20fef6 100644
--- a/tests/auto/declarative/qdeclarativetextedit/tst_qdeclarativetextedit.cpp
+++ b/tests/auto/declarative/qdeclarativetextedit/tst_qdeclarativetextedit.cpp
@@ -127,6 +127,8 @@ private slots:
     void openInputPanelOnFocus();
     void geometrySignals();
     void pastingRichText_QTBUG_14003();
+    void implicitSize_data();
+    void implicitSize();
 
 private:
     void simulateKey(QDeclarativeView *, int key);
@@ -1447,6 +1449,33 @@ void tst_qdeclarativetextedit::pastingRichText_QTBUG_14003()
 #endif
 }
 
+void tst_qdeclarativetextedit::implicitSize_data()
+{
+    QTest::addColumn<QString>("text");
+    QTest::addColumn<QString>("wrap");
+    QTest::newRow("plain") << "The quick red fox jumped over the lazy brown dog" << "TextEdit.NoWrap";
+    QTest::newRow("richtext") << "<b>The quick red fox jumped over the lazy brown dog</b>" << "TextEdit.NoWrap";
+    QTest::newRow("plain_wrap") << "The quick red fox jumped over the lazy brown dog" << "TextEdit.Wrap";
+    QTest::newRow("richtext_wrap") << "<b>The quick red fox jumped over the lazy brown dog</b>" << "TextEdit.Wrap";
+}
+
+void tst_qdeclarativetextedit::implicitSize()
+{
+    QFETCH(QString, text);
+    QFETCH(QString, wrap);
+    QString componentStr = "import QtQuick 1.1\nTextEdit { text: \"" + text + "\"; width: 50; wrapMode: " + wrap + " }";
+    QDeclarativeComponent textComponent(&engine);
+    textComponent.setData(componentStr.toLatin1(), QUrl::fromLocalFile(""));
+    QDeclarativeTextEdit *textObject = qobject_cast<QDeclarativeTextEdit*>(textComponent.create());
+
+    QVERIFY(textObject->width() < textObject->implicitWidth());
+    QVERIFY(textObject->height() == textObject->implicitHeight());
+
+    textObject->resetWidth();
+    QVERIFY(textObject->width() == textObject->implicitWidth());
+    QVERIFY(textObject->height() == textObject->implicitHeight());
+}
+
 QTEST_MAIN(tst_qdeclarativetextedit)
 
 #include "tst_qdeclarativetextedit.moc"