--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/homescreenapp/hsutils/src/hswidgetpositioningonwidgetadd.cpp	Fri Mar 19 09:27:44 2010 +0200
@@ -0,0 +1,139 @@
+/*
+* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description: 
+*
+*/
+
+#include <QtGlobal>
+#include "hswidgetpositioningonwidgetadd.h"
+#include <math.h>
+#include <QLineF>
+
+const qreal offset = 40; //TODO: Implement this as configurable parameter
+
+/*!
+    \class HsWidgetPositioningOnWidgetAdd
+    \brief Defines widget positioning on widget add.
+
+    Widget positioning on widget add sets positions for
+    a set of home screen widgets added from application library.
+*/
+
+/*!
+    Sets the positioning \a instance as the current one.
+    Deletes the existing instance if present.
+*/
+void HsWidgetPositioningOnWidgetAdd::setInstance(
+    HsWidgetPositioningOnWidgetAdd *instance)
+{
+    if (mInstance)
+        delete mInstance;
+    mInstance = instance;
+}
+ 
+/*!
+    Returns the current positioning instance.
+*/
+HsWidgetPositioningOnWidgetAdd *HsWidgetPositioningOnWidgetAdd::instance()
+{
+    return mInstance;
+}
+
+/*!
+    Stores the current positioning instance.
+*/
+HsWidgetPositioningOnWidgetAdd *HsWidgetPositioningOnWidgetAdd::mInstance = 0;
+
+/*!
+    \class HsAnchorPointInBottomRight
+    \brief Diagonal widget positioning algorithm.
+    
+    Sets widget's lower right corner to follow content area's diagonal.
+    Widgets are positioned to certain offset to each other.
+*/
+QList<QRectF> HsAnchorPointInBottomRight::convert(
+    const QRectF &contentArea,
+    const QList<QRectF> &widgets)
+{
+    QList<QRectF> toGeometries;
+
+    //Offset for widgets' bottom right position to each other
+    qreal k = contentArea.height()/contentArea.width(); //slope of the diagonal
+    qreal offset_x = offset/(sqrt(k + 1));
+    qreal offset_y = k*offset_x;
+    QPointF offsetPoint(offset_x, offset_y);
+    
+    QLineF diagonal(contentArea.topLeft(), contentArea.bottomRight());
+    QLineF widgetRight(contentArea.center().x()+ widgets.at(0).width()/2,
+                       contentArea.top(),
+                       contentArea.center().x()+ widgets.at(0).width()/2,
+                       contentArea.bottom());
+
+    QPointF anchorPoint;
+    if(QLineF::BoundedIntersection != diagonal.intersect(widgetRight, &anchorPoint)) {
+        return widgets; //Return original since undefined error.
+                        //In this case widget's must be wider than the content area.
+    }
+
+    //First widget to the center of the content area
+    foreach (QRectF g, widgets) {
+        g.moveBottomRight(anchorPoint);
+        toGeometries << g;
+        anchorPoint -= offsetPoint;
+        if(!contentArea.contains(anchorPoint)) {
+            anchorPoint = contentArea.bottomRight();
+        }
+    }
+    return toGeometries;
+}
+
+/*!
+    \class HsAnchorPointInCenter
+    \brief Diagonal widget positioning algorithm.
+    
+    Sets widget's center point to follow content area's diagonal.
+    Widgets are positioned to certain offset to each other.
+*/
+#ifdef COVERAGE_MEASUREMENT
+#pragma CTC SKIP
+#endif //COVERAGE_MEASUREMENT
+QList<QRectF> HsAnchorPointInCenter::convert(
+    const QRectF &contentArea,
+    const QList<QRectF> &widgets)
+{
+    QList<QRectF> toGeometries;
+
+    //Offset for widgets' centers position to each other
+    qreal k = contentArea.height()/contentArea.width(); //slope of the diagonal
+    qreal offset_x = offset/(sqrt(k + 1));
+    qreal offset_y = k*offset_x;
+    QPointF offsetPoint(offset_x, offset_y);
+
+    //First widget to the center of the content area
+    QPointF anchorPoint = contentArea.center();
+    foreach (QRectF g, widgets) {
+        g.moveCenter(anchorPoint);
+        toGeometries << g;
+        anchorPoint -= offsetPoint;
+        if(!contentArea.contains(anchorPoint)) {
+            anchorPoint = contentArea.bottomRight();
+        }
+    }
+    return toGeometries;
+}
+
+#ifdef COVERAGE_MEASUREMENT
+#pragma CTC ENDSKIP
+#endif //COVERAGE_MEASUREMENT
+