/*
 * ChannelView.h
 *
 * Copyright (C) 1999 Stephen F. White
 * 
 * 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.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program (see the file "COPYING" for details); if 
 * not, write to the Free Software Foundation, Inc., 675 Mass Ave, 
 * Cambridge, MA 02139, USA.
 */

#ifndef _CHANNEL_VIEW_H
#define _CHANNEL_VIEW_H

// undefine if you do not need the blinking channelview cursor
#define BLINKTIMER 1 

#ifndef _RECT_H
#include "Rect.h"
#endif
#ifndef _POINT_H
#include "Point.h"
#endif
#ifndef _SCENE_VIEW_H
#include "SceneView.h"
#endif

class Node;
class DuneDoc;

enum {
    NORMAL,
    DRAGGING,
    SELECTING
};

#include "swttypedef.h"

class Interpolator;

class ChannelView : public SceneView
{
public:
			ChannelView(Scene *scene, SWND parent);
    virtual	       ~ChannelView();

    virtual void	OnDraw(int x, int y, int width, int height);
    virtual void	OnUpdate(SceneView *sender, int type, Hint *hint);

    virtual void	OnLButtonDown(int x, int y, int modifiers);
    virtual void	OnLButtonUp(int x, int y, int modifiers);
    virtual void	OnMouseMove(int x, int y, int modifiers);
    virtual void	OnFastForward();
    virtual void	OnRewind();
    virtual void	OnEditDelete();
    virtual void	OnSize(int width, int height);
//    virtual void	OnUpdateEditDelete(CCmdUI* pCmdUI);
    void		DeleteLastSelection(void);
#ifdef BLINKTIMER
    int			OnBlinkTimer();
#endif
    int			OnAutoScrollTimer();

private:
    void		AutoScale();
    void		DoMouseMove(int x, int y);
    void		CheckAutoScroll(int x, int y);
    void		DrawRulers(SDC dc, float xMin, float xMax,
    					   float yMin, float yMax);
    void		DrawKeys(SDC dc);
    void		DrawSelection(SDC dc);
    void		SetSelection(int pos);
    void		InvalidateSelection();
    bool		PointNearLine(int x, int y, int x1, int y1,
    				  		    int x2, int y2) const;
    void		AddKey(int chan, int key, int x);
    bool                isDrawableChannel(int chan);
    void                findDrawableChannels(void);

private:
    Interpolator       *_interpolator;
    int			_selectedChannel;
    int			_selectedKey;
    float		_yMin, _yMax;
    float		_xScale;
    float		_yScale;
    int			_state;
    Rect		_rect;
    int			_anchor;
    int		   	 _lastX;
    int			_selMin;
    int			_selMax;
#ifdef BLINKTIMER
    STIMER		_timer;
#endif
    STIMER		_autoScrollTimer;
    bool		_cursorOn;
    bool		_autoScrolling;
    int			_autoScrollPX, _autoScrollPY;
    Array<bool>         _multipleValuesInChannel;
};
#endif