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/* $Id: gtkdatabox_graph.h 4 2008-06-22 09:19:11Z rbock $ */
/* GtkDatabox - An extension to the gtk+ library
* Copyright (C) 1998 - 2008 Dr. Roland Bock
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 2.1
* 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
/**
* SECTION:gtkdatabox_graph
* @short_description: An abstract anchestor for all "real" graphs.
* @include: gtkdatabox_graph.h
* @see_also: #GtkDatabox, #GtkDataboxPoints, #GtkDataboxLines, #GtkDataboxBars, #GtkDataboxGrid, #GtkDataboxCrossSimple
*
* GtkDataboxGraphs can display data or other things in a #GtkDatabox widget.
*
* This class is just the basic interface. Other graph classes are derived from this
* class and implement some real things.
*
*/
#ifndef __GTK_DATABOX_GRAPH_H__
#define __GTK_DATABOX_GRAPH_H__
#include <gtk/gtkstyle.h>
#include <gdk/gdk.h>
#include <pango/pango.h>
#include <gtkdatabox.h>
G_BEGIN_DECLS
#define GTK_DATABOX_TYPE_GRAPH (gtk_databox_graph_get_type ())
#define GTK_DATABOX_GRAPH(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), \
GTK_DATABOX_TYPE_GRAPH, \
GtkDataboxGraph))
#define GTK_DATABOX_GRAPH_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), \
GTK_DATABOX_TYPE_GRAPH, \
GtkDataboxGraphClass))
#define GTK_DATABOX_IS_GRAPH(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), \
GTK_DATABOX_TYPE_GRAPH))
#define GTK_DATABOX_IS_GRAPH_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), \
GTK_DATABOX_TYPE_GRAPH))
#define GTK_DATABOX_GRAPH_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), \
GTK_DATABOX_TYPE_GRAPH, \
GtkDataboxGraphClass))
typedef struct _GtkDataboxGraphClass GtkDataboxGraphClass;
/**
* GtkDataboxGraphPrivate
*
* A private data structure used by the #GtkDataboxGraph. It shields all internal things
* from developers who are just using the object.
*
**/
typedef struct _GtkDataboxGraphPrivate GtkDataboxGraphPrivate;
/**
* _GtkDataboxGraph
* @parent: The parent object
* @priv: A private structure containing internal data.
*
* Implementation of #GtkDataboxGraph
*
**/
struct _GtkDataboxGraph
{
/*< private >*/
GObject parent;
GtkDataboxGraphPrivate *priv;
};
struct _GtkDataboxGraphClass
{
GObjectClass parent_class;
/*
* public virtual drawing function
*/
void (*draw) (GtkDataboxGraph * graph, GtkDatabox * box);
gint (*calculate_extrema) (GtkDataboxGraph * graph,
gfloat * min_x, gfloat * max_x,
gfloat * min_y, gfloat * max_y);
GdkGC* (*create_gc) (GtkDataboxGraph * graph, GtkDatabox * box);
};
GType gtk_databox_graph_get_type (void);
GdkGC* gtk_databox_graph_get_gc (GtkDataboxGraph * graph);
void gtk_databox_graph_set_gc (GtkDataboxGraph * graph, GdkGC *gc);
void gtk_databox_graph_set_hide (GtkDataboxGraph * graph, gboolean hide);
gboolean gtk_databox_graph_get_hide (GtkDataboxGraph * graph);
void gtk_databox_graph_set_color (GtkDataboxGraph * graph,
GdkColor * color);
GdkColor *gtk_databox_graph_get_color (GtkDataboxGraph * graph);
void gtk_databox_graph_set_size (GtkDataboxGraph * graph, gint size);
gint gtk_databox_graph_get_size (GtkDataboxGraph * graph);
gint gtk_databox_graph_calculate_extrema (GtkDataboxGraph * graph,
gfloat * min_x, gfloat * max_x,
gfloat * min_y, gfloat * max_y);
/* This function is called by GtkDatabox */
void gtk_databox_graph_draw (GtkDataboxGraph * graph, GtkDatabox * box);
/* This function is called by derived graph classes */
GdkGC* gtk_databox_graph_create_gc (GtkDataboxGraph * graph, GtkDatabox * box);
G_END_DECLS
#endif /* __GTK_DATABOX_GRAPH_H__ */
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