/*
 * Draw.h -- Header for common drawing routines.
 *
 * Authors		: Patrick Lecoanet.
 * Creation date	: Sat Dec 10 12:51:30 1994
 *
 * $Id$
 */

/*
 *  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 _Draw_h
#define _Draw_h

#include "List.h"
#include "Types.h"
#include "Color.h"
#include "Attrs.h"

#include <X11/Xlib.h>


#define LIGHTNING_POINTS	4
#define CORNER_POINTS		3
#define DOUBLE_CORNER_POINTS	4
#define STRAIGHT_POINTS		2
#define	LINE_SHAPE_POINTS	4	/* Maximum of all above */


struct _WidgetInfo;


void SetLineStyle(Display *display, GC gc, LineStyle line_style);
void GetLineShape(ZnPoint *p1, ZnPoint *p2, unsigned int line_width,
		  LineShape shape, ZnBBox *bbox, ZnList to_points);
void DrawLineShape(struct _WidgetInfo *wi, ZnPoint *points, int num_points,
		   LineStyle line_style, ZnColor line_foreground,
		   unsigned int line_width, LineShape shape);
int PolygonReliefInBBox(ZnPoint *points, int num_points, int line_width,
			ZnBBox *bbox);
void GetPolygonReliefBBox(ZnPoint *points, int num_points, int line_width,
			  ZnBBox *bbox);
double PolygonReliefToPointDist(ZnPoint *points, int num_points, int line_width,
				ZnPoint *pp);
void DrawRectangleRelief(struct _WidgetInfo *wi,
 			 ReliefStyle relief, ZnColorGradient gradient,
 			 XRectangle *bbox, unsigned int line_width);
void DrawPolygonRelief(struct _WidgetInfo *wi, ReliefStyle relief,
		       ZnColorGradient gradient, ZnPoint *points,
		       int num_points, int line_width);
void DrawRectangleGradient(struct _WidgetInfo *wi, ZnGradientGeom grad_geom,
			   ZnColorGradient grad_color, XRectangle *bbox);
void DrawPolygonGradient(struct _WidgetInfo *wi, ZnGradientGeom grad_geom,
			 ZnColorGradient grad_color, ZnPoly *poly, ZnBBox *bbox);


#endif	/* _Draw_h */