#ifndef __SP_RULER_H__
#define __SP_RULER_H__

/*
 * Customized ruler class for inkscape
 *
 * Authors:
 *   Lauris Kaplinski <lauris@kaplinski.com>
 *   Frank Felfe <innerspace@iname.com>
 *
 * Copyright (C) 1999-2002 authors
 *
 * Released under GNU GPL, read the file 'COPYING' for more information
 */

#include <gtk/gtk.h>
#include "sp-metric.h"
#include <iostream>
#include <glib.h>

#define SP_TYPE_RULER            (sp_ruler_get_type ())
#define SP_RULER(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), SP_TYPE_RULER, SPRuler))
#define SP_RULER_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), SP_TYPE_RULER, SPRulerClass))
#define SP_IS_RULER(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), SP_TYPE_RULER))
#define SP_IS_RULER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), SP_TYPE_RULER))
#define SP_RULER_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), SP_TYPE_RULER, SPRulerClass))


typedef struct _SPRuler         SPRuler;
typedef struct _SPRulerPrivate  SPRulerPrivate;
typedef struct _SPRulerClass    SPRulerClass;
typedef struct _SPRulerMetric   SPRulerMetric;

/* All distances below are in 1/72nd's of an inch. (According to
 * Adobe that's a point, but points are really 1/72.27 in.)
 */
struct _SPRuler
{
  GtkWidget widget;

  /*< private >*/
  SPRulerPrivate *priv;
};

struct _SPRulerClass
{
  GtkWidgetClass parent_class;

  void (* draw_ticks) (SPRuler *ruler,
		       cairo_t *cr);
  void (* draw_pos)   (SPRuler *ruler,
		       cairo_t *cr);
};

struct _SPRulerMetric
{
  gchar const *metric_name;
  gchar const *abbrev;
  /* This should be points_per_unit. This is the size of the unit
   * in 1/72nd's of an inch and has nothing to do with screen pixels */
  gdouble pixels_per_unit;
  gdouble ruler_scale[10];
  gint subdivide[5];        /* five possible modes of subdivision */
};


GType           sp_ruler_get_type   (void) G_GNUC_CONST;
GtkWidget*      sp_ruler_new        (GtkOrientation  orientation);
void            sp_ruler_set_range  (SPRuler        *ruler,
                                     gdouble         lower,
                                     gdouble         upper,
                                     gdouble         position,
                                     gdouble         max_size);
void            sp_ruler_get_range  (SPRuler        *ruler,
                                     gdouble        *lower,
                                     gdouble        *upper,
                                     gdouble        *position,
                                     gdouble        *max_size);
void     sp_ruler_set_metric(SPRuler *ruler, SPMetric  metric);
SPMetric sp_ruler_get_metric(SPRuler *ruler);

#endif /* __SP_RULER_H__ */

/*
  Local Variables:
  mode:c++
  c-file-style:"stroustrup"
  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
  indent-tabs-mode:nil
  fill-column:99
  End:
*/
// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :