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/*
 For general Scribus (>=1.3.2) copyright and licensing information please refer
 to the COPYING file provided with the program. Following this notice may exist
 a copyright and/or license notice that predates the release of Scribus 1.3.2
 for which a new license (GPL+exception) is in place.
 */

/***************************************************************************
*                                                                         *
*   This program is free software; you can redistribute it and/or modify  *
*   it under the terms of the GNU General Public License as published by  *
*   the Free Software Foundation; either version 2 of the License, or     *
*   (at your option) any later version.                                   *
*                                                                         *
***************************************************************************/




#ifndef CANVAS_GESTURE_RULERMOVE_H
#define CANVAS_GESTURE_RULERMOVE_H

#include <QPoint>

#include "scribusapi.h"
#include "canvas.h"
#include "canvasgesture.h"
#include "canvasmode.h"
#include "scribusview.h"

class QCursor;
class QDragEnterEvent;
class QDragMoveEvent;
class QDragLeaveEvent;
class QDropEvent;
class QEvent;
class QInputMethodEvent;
class QMouseEvent;
class QKeyEvent;
class QPainter;
class ScribusMainWindow;

/**
  This class realizes the moving of guides and the moving of the ruler origin
 */

class SCRIBUS_API RulerGesture : public CanvasGesture
{
        Q_OBJECT
public:
        enum Mode { HORIZONTAL, VERTICAL, ORIGIN };
        RulerGesture (ScribusView* view, Mode mode) :
                CanvasGesture(view), m_ScMW(m_view->m_ScMW), m_mode(mode), m_haveGuide(false), m_haveCursor(false), m_xy(0,0) {};

        /**
                Prepares the gesture for 'mode' without using an existing guide. If 'mode' is HORIZONTAL
                or VERTICAL, a new guide will be created when the mouse is moved over a page.
         */

        void prepare(Mode mode);
        void clear();
       
        virtual void drawControls(QPainter* p);
        virtual void activate(bool);
        virtual void deactivate(bool);
        virtual void mouseReleaseEvent(QMouseEvent *m);
        virtual void mouseMoveEvent(QMouseEvent *m);
        /**
          This method should be called when the mousebutton is pressed.
          If there's a moveable guide near this position, it prepares the gesture for moving this guide.
         */

        virtual void mousePressEvent(QMouseEvent *m);
       
        Mode getMode() { return m_mode; }
        /**
                Use this to test if there's a moveable guide near this position.
                It prepares the gesture for moving this guide.
         */

        bool mouseHitsGuide(FPoint mousePointDoc);
        /**
          It tests for a guide near position, that guide being moveable or not.
          If the test results in success, emits guideInfo;
        */

        void mouseSelectGuide(QMouseEvent *m);
private:
        ScribusMainWindow* m_ScMW;
        Mode m_mode;
        bool m_haveGuide;
        int m_page;
        double m_guide;
        bool m_haveCursor;
        QCursor m_cursor;
        QPoint m_xy;
        void movePoint(QMouseEvent *m);
       
        signals:
                void guideInfo(int /*direction*/, double /*position*/);
};


#endif