--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/gui/kernel/qlayoutengine_p.h	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,140 @@
+/****************************************************************************
+**
+** 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 QtGui 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 QLAYOUTENGINE_P_H
+#define QLAYOUTENGINE_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 "QtGui/qlayoutitem.h"
+#include "QtGui/qstyle.h"
+
+QT_BEGIN_NAMESPACE
+
+template <typename T> class QVector;
+
+struct QLayoutStruct
+{
+    inline void init(int stretchFactor = 0, int minSize = 0) {
+        stretch = stretchFactor;
+        minimumSize = sizeHint = minSize;
+        maximumSize = QLAYOUTSIZE_MAX;
+        expansive = false;
+        empty = true;
+        spacing = 0;
+    }
+
+    int smartSizeHint() {
+        return (stretch > 0) ? minimumSize : sizeHint;
+    }
+    int effectiveSpacer(int uniformSpacer) const {
+        Q_ASSERT(uniformSpacer >= 0 || spacing >= 0);
+        return (uniformSpacer >= 0) ? uniformSpacer : spacing;
+    }
+
+    // parameters
+    int stretch;
+    int sizeHint;
+    int maximumSize;
+    int minimumSize;
+    bool expansive;
+    bool empty;
+    int spacing;
+
+    // temporary storage
+    bool done;
+
+    // result
+    int pos;
+    int size;
+};
+
+
+Q_GUI_EXPORT void qGeomCalc(QVector<QLayoutStruct> &chain, int start, int count,
+                            int pos, int space, int spacer = -1);
+Q_GUI_EXPORT QSize qSmartMinSize(const QSize &sizeHint, const QSize &minSizeHint,
+                                 const QSize &minSize, const QSize &maxSize,
+                                 const QSizePolicy &sizePolicy);
+Q_GUI_EXPORT QSize qSmartMinSize(const QWidgetItem *i);
+Q_GUI_EXPORT QSize qSmartMinSize(const QWidget *w);
+Q_GUI_EXPORT QSize qSmartMaxSize(const QSize &sizeHint,
+                                 const QSize &minSize, const QSize &maxSize,
+                                 const QSizePolicy &sizePolicy, Qt::Alignment align = 0);
+Q_GUI_EXPORT QSize qSmartMaxSize(const QWidgetItem *i, Qt::Alignment align = 0);
+Q_GUI_EXPORT QSize qSmartMaxSize(const QWidget *w, Qt::Alignment align = 0);
+
+Q_GUI_EXPORT int qSmartSpacing(const QLayout *layout, QStyle::PixelMetric pm);
+
+/*
+  Modify total maximum (max), total expansion (exp), and total empty
+  when adding boxmax/boxexp.
+
+  Expansive boxes win over non-expansive boxes.
+  Non-empty boxes win over empty boxes.
+*/
+static inline void qMaxExpCalc(int & max, bool &exp, bool &empty,
+                               int boxmax, bool boxexp, bool boxempty)
+{
+    if (exp) {
+        if (boxexp)
+            max = qMax(max, boxmax);
+    } else {
+        if (boxexp || (empty && (!boxempty || max == 0)))
+            max = boxmax;
+        else if (empty == boxempty)
+            max = qMin(max, boxmax);
+    }
+    exp = exp || boxexp;
+    empty = empty && boxempty;
+}
+
+QT_END_NAMESPACE
+
+#endif // QLAYOUTENGINE_P_H