IvfMouseViewHandler.h

//
// Copyright 1999-2006 by Structural Mechanics, Lund University.
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Library General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// Library General Public License for more details.
//
// You should have received a copy of the GNU Library General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
// USA.
//
// Please report all bugs and problems to "ivf@byggmek.lth.se".
//
//
// Written by Jonas Lindemann
//

#ifndef _CIvfMouseViewHandler_h_
#define _CIvfMouseViewHandler_h_

#include <ivf/IvfBase.h>
#include <ivf/IvfCamera.h>

#include <ivfwidget/IvfWidgetBase.h>
#include <ivfwidget/IvfHandlerBase.h>

IvfSmartPointer(CIvfMouseViewHandler);

class IVFWIDGET_API CIvfMouseViewHandler : public CIvfHandlerBase,
        CIvfMouseDownEvent,
        CIvfMouseMoveEvent,
        CIvfMouseUpEvent,
        CIvfResizeEvent
{
public:
        enum TKeyHandling {
                KH_NORMAL,
                KH_MIDDLE_BUTTON
        };
private:
        double m_angleX;
        double m_angleY;
        double m_moveX;
        double m_moveY;
        double m_zoomX;
        double m_zoomY;

        int m_beginX;
        int m_beginY;

        int m_width;
        int m_height;

        double m_panScalefactor;
        double m_zoomScalefactor;
        double m_rotateScalefactor;

        double m_autoScaleBias;

        bool m_autoScale;

        CIvfCameraPtr m_camera;
        CIvfWidgetBase* m_widget;

        TKeyHandling m_keyHandling;

        bool isPan();
        bool isZoom();
        bool isRotating();
        bool isZoomOrPan();
        void calcAutoScale();
public:
        CIvfMouseViewHandler(CIvfWidgetBase* widget, CIvfCamera* camera);

        virtual ~CIvfMouseViewHandler();

        IvfClassInfo("CIvfMouseViewHandler",CIvfBase);

        void setPanScalefactor(double factor);

        double getPanScalefactor();

        void setZoomScalefactor(double factor);

        double getZoomScalefactor();

        void setAutoScale(bool flag);

        bool getAutoScale();

        void setAutoScaleBias(double bias);

        double getAutoScaleBias();

        void setKeyHandling(TKeyHandling keyHandling);

        TKeyHandling getKeyHandling();

        virtual void doResize(int width, int height);
        virtual void doMouseDown(int x, int y);
        virtual void doMouseMove(int x, int y);
        virtual void doMouseUp(int x, int y);

        // Implemented events

        virtual void onMouseDown(int x, int y);
        virtual void onMouseMove(int x, int y);
        virtual void onMouseUp(int x, int y);
        virtual void onResize(int width, int height);

};

#endif

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