/*
 * Attrs.h -- Header for the attribute manipulation routines.
 *
 * Authors		: Patrick Lecoanet.
 * Creation date	: Fri Dec 31 10:06:37 1999
 *
 * $Id$
 */

/*
 *  Copyright (c) 1993 - 1999 CENA, Patrick Lecoanet --
 *
 * This code 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 code 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 code; if not, write to the Free
 * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 */


#ifndef _Attrs_h
#define _Attrs_h

#ifdef __CPLUSPLUS__
extern "C" {
#endif


#include <Types.h>
  

/*
 * Label Formats.
 */
  
/*
 * field flags.
 */
#define	LF_ATTACH_PIXEL	0
#define	LF_ATTACH_FWD	1
#define	LF_ATTACH_BWD	2
#define	LF_ATTACH_LEFT	3	/* Align left on left or top on top */
#define	LF_ATTACH_RIGHT	4	/* Align right on right or bottom on bottom */

#define LF_DIM_PIXEL	0
#define	LF_DIM_FONT	1
#define	LF_DIM_ICON	2
#define LF_DIM_AUTO	3
#define LF_DIM_LABEL	4
  
typedef struct {
  int		x_spec;
  int		y_spec;
  short		width_spec;
  short		height_spec;
  char		x_attach;
  char		y_attach;
  char		x_dim;
  char		y_dim;
} ZnFieldFormatStruct, *ZnFieldFormat;

typedef struct {
  short		clip_width;
  short		clip_height;
  int		num_fields;
  Tcl_HashEntry	*entry;
  int		ref_count;
  ZnFieldFormatStruct fields[1];
} ZnLabelFormatStruct, *ZnLabelFormat;


ZnLabelFormat
LabelFormatCreate(Tcl_Interp	* /* interp */,
		  char		* /* format_str */,
		  int		/* num_fields */);
ZnLabelFormat
LabelFormatDuplicate(ZnLabelFormat	/* label_format */);
void
LabelFormatDelete(ZnLabelFormat	/* label_format */);
char *
LabelFormatGetString(ZnLabelFormat	/* label_format */);
ZnBool
LabelFormatGetClipBox(ZnLabelFormat	/* label_format */,
		      ZnDim		*/* width */,
		      ZnDim		*/* height */);
#define LabelFormatNumFields(lf)	((lf)->num_fields)
void
LabelFormatGetField(ZnLabelFormat	/* label_format */,
		    int		/* field */,
		    char	*/* x_attach */,
		    char	*/* y_attach */,
		    char	*/* x_dim */,
		    char	*/* y_dim */,
		    int		*/* x_spec */,
		    int		*/* y_spec */,
		    short	*/* width_spec */,
		    short	*/* height_spec */);

/*
 * Line Ends.
 */
typedef struct {
  ZnReal	shape_a;
  ZnReal	shape_b;
  ZnReal	shape_c;
  Tcl_HashEntry	*entry;
  int		ref_count;
} ZnLineEndStruct, *ZnLineEnd;

ZnLineEnd
LineEndCreate(Tcl_Interp	*interp,
	      char		*line_end_str);
ZnLineEnd
LineEndDuplicate(ZnLineEnd	le);
void
LineEndDelete(ZnLineEnd	le);
char *
LineEndGetString(ZnLineEnd	le);

/*
 * Gradient Geometry.
 */
typedef struct {
  int		d1;
  int		d2;
  int		angle;
  Tcl_HashEntry	*entry;
  int		ref_count;
} ZnGradientGeomStruct, *ZnGradientGeom;

ZnGradientGeom
GradientGeomCreate(Tcl_Interp	*interp,
		   char		*grad_geom_str);
ZnGradientGeom
GradientGeomDuplicate(ZnGradientGeom	gg);
void
GradientGeomDelete(ZnGradientGeom	gg);
char *
GradientGeomGetString(ZnGradientGeom	gg);

  
#ifdef __CPLUSPLUS__
}
#endif

#endif	/* _Attrs_h */