--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/homescreenapp/hsutils/inc/hswidgetpositioningonwidgetmove.h	Fri Jun 25 19:19:22 2010 +0300
@@ -0,0 +1,172 @@
+/*
+* 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:
+*
+*/
+
+#ifndef HSWIDGETPOSITIONINGONWIDGETMOVE_H
+#define HSWIDGETPOSITIONINGONWIDGETMOVE_H
+
+#include <QVariantHash>
+#include <QList>
+#include <QRectF>
+#include <QPointF>
+#include <QLineF>
+
+#include "hsutils_global.h"
+#include "hstest_global.h"
+
+HOMESCREEN_TEST_CLASS(t_hsUtils)
+
+class HSUTILS_EXPORT HsWidgetPositioningOnWidgetMove
+{
+public:
+    class Result
+    {
+    public:
+        Result() : hasHorizontalSnap(false), hasVerticalSnap(false),
+                   horizontalSnapPosition(0.0), verticalSnapPosition(0.0)
+        { }
+        bool isNull() const 
+        { return !hasHorizontalSnap && !hasVerticalSnap; }
+
+        bool hasHorizontalSnap;
+        bool hasVerticalSnap;
+        qreal horizontalSnapPosition;
+        qreal verticalSnapPosition;
+        QLineF verticalSnapLine;
+        QLineF horizontalSnapLine;
+    };
+
+    virtual ~HsWidgetPositioningOnWidgetMove() {}
+    
+    virtual void setConfiguration(const QVariantHash &configuration) = 0;
+
+    virtual void setPagePresentation(const QRectF &containerRect, 
+                                     const QList<QRectF> &inactiveRects,
+                                     const QRectF &activeRect) = 0;
+
+    virtual Result run(const QRectF &movingRect) = 0;
+
+    static void setInstance(HsWidgetPositioningOnWidgetMove *instance);
+    static HsWidgetPositioningOnWidgetMove *instance();
+
+private:
+    static HsWidgetPositioningOnWidgetMove *mInstance;
+};
+
+class HsSnapRectangle
+{
+public:
+    HsSnapRectangle() : rectangle(QRectF()) 
+    { }
+    HsSnapRectangle(QRectF rect) : rectangle(rect), isLeftSnapableForAbove(true), isLeftSnapableForBelow(true),
+                                   isRightSnapableForAbove(true), isRightSnapableForBelow(true),
+                                   isTopSnapableForLeft(true), isTopSnapableForRight(true),
+                                   isBottomSnapableForLeft(true), isBottomSnapableForRight(true)
+    { }
+
+    QRectF rectangle;
+    bool isLeftSnapableForAbove;
+    bool isLeftSnapableForBelow;
+    bool isRightSnapableForAbove;
+    bool isRightSnapableForBelow;
+    bool isTopSnapableForLeft;
+    bool isTopSnapableForRight;
+    bool isBottomSnapableForLeft;
+    bool isBottomSnapableForRight;
+};
+
+class HSUTILS_EXPORT HsSnapToLines : public HsWidgetPositioningOnWidgetMove
+{
+public:
+    HsSnapToLines();
+
+    void setConfiguration(const QVariantHash &configuration);
+
+    void setPagePresentation(const QRectF &containerRect, 
+                             const QList<QRectF> &inactiveRects,
+                             const QRectF &activeRect);
+
+    Result run(const QRectF &movingRect);
+private:
+
+    void createSnappableRectangles(const QList<QRectF> &inactiveRects);
+    void checkForCenterSnapping();
+    void checkInactiveRectLieAboveOrBelowOfMovingRect();
+    void compareLeftSideOfMovingRectForSnapping();
+    void compareRightSideOfMovingRectForSnapping();
+    void checkInactiveRectLieLeftOrRightOfMovingRect();
+    void compareTopOfMovingRectForSnapping();
+    void compareBottomOfMovingRectForSnapping();
+    void extendVerticalLine();
+    void extendHorizontalLine();
+    void checkInactiveRectPositionToVerticalLine();
+    void extendVerticalLineToIncludeInactiveRect();
+    void checkInactiveRectPositionToHorizontalLine();
+    void extendHorizontalLineToIncludeInactiveRect();
+
+private: //data
+    QRectF mContainerRect;
+
+    qreal mActiveRectWidth;
+    qreal mActiveRectHeight;
+
+    QList<HsSnapRectangle> mInactiveSnapRects;
+
+    QRectF mInactiveRectToCompare;
+    HsSnapRectangle mInactiveSnapRectToCompare;
+    QRectF mMovingRect;
+    qreal mHorizontalSnapPosition;
+    qreal mVerticalSnapPosition;
+
+    bool mHorizontalSnapFound;
+    QLineF mVerticalLine;
+
+    bool mVerticalSnapFound;
+    QLineF mHorizontalLine;
+
+    bool mRectLieAbove;
+    bool mLeftInRange;
+    bool mRightInRange;
+    qreal mMinVerticalEdgesDistance;
+    qreal mVerticalDistance;
+    qreal mVerticalDistanceFromSelectedRect;
+    qreal mContainerVerticalEdgeDistance;
+
+    bool mRectLieLeft;
+    bool mTopInRange;
+    bool mBottomInRange;
+    qreal mMinHorizontalEdgesDistance;
+    qreal mHorizontalDistance;
+    qreal mHorizontalDistanceFromSelectedRect;
+    qreal mContainerHorizontalEdgeDistance;
+
+    bool mSnapEnabled;
+    qreal mSnapForce;
+    qreal mSnapGap;
+    qreal mSnapBorderGap;
+
+    bool mRectVerticalEdgeLiesInLineWithVerticalLine;
+    bool mRectLieAboveVerticalLine;
+    bool mRectLieBelowVerticalLine;
+
+    bool mRectHorizontalEdgeLiesInLineWithHorizontalLine;
+    bool mRectLieLeftOfHorizontalLine;
+    bool mRectLiesRightOfHorizontalLine;
+
+    HOMESCREEN_TEST_FRIEND_CLASS(t_hsUtils)
+};
+
+#endif // HSWIDGETPOSITIONINGONWIDGETMOVE_H