/* uber-graph.h
 *
 * Copyright (C) 2010 Christian Hergert <chris@dronelabs.com>
 *
 * 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 3 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.  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef __UBER_GRAPH_H__
#define __UBER_GRAPH_H__

#include <gtk/gtk.h>

#include "uber-range.h"
#include "uber-label.h"

G_BEGIN_DECLS

#define UBER_TYPE_GRAPH            (uber_graph_get_type())
#define UBER_GRAPH(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), UBER_TYPE_GRAPH, UberGraph))
#define UBER_GRAPH_CONST(obj)      (G_TYPE_CHECK_INSTANCE_CAST ((obj), UBER_TYPE_GRAPH, UberGraph const))
#define UBER_GRAPH_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass),  UBER_TYPE_GRAPH, UberGraphClass))
#define UBER_IS_GRAPH(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), UBER_TYPE_GRAPH))
#define UBER_IS_GRAPH_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass),  UBER_TYPE_GRAPH))
#define UBER_GRAPH_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj),  UBER_TYPE_GRAPH, UberGraphClass))

typedef enum
{
	UBER_GRAPH_FORMAT_DIRECT,
	UBER_GRAPH_FORMAT_DIRECT1024,
	UBER_GRAPH_FORMAT_PERCENT,
} UberGraphFormat;

typedef struct _UberGraph        UberGraph;
typedef struct _UberGraphClass   UberGraphClass;
typedef struct _UberGraphPrivate UberGraphPrivate;

struct _UberGraph
{
	GtkDrawingArea parent;

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

struct _UberGraphClass
{
	GtkDrawingAreaClass parent_class;

	gboolean   (*downscale)     (UberGraph    *graph);
	gboolean   (*get_next_data) (UberGraph    *graph);
	void       (*get_yrange)    (UberGraph    *graph,
	                             UberRange    *range);
	void       (*render)        (UberGraph    *graph,
	                             cairo_t      *cairo,
	                             GdkRectangle *content_area,
	                             guint         epoch,
	                             gfloat        each);
	void       (*render_fast)   (UberGraph    *graph,
	                             cairo_t      *cairo,
	                             GdkRectangle *content_area,
	                             guint         epoch,
	                             gfloat        each);
	void       (*set_stride)    (UberGraph    *graph,
	                             guint         stride);
};

GType      uber_graph_get_type         (void) G_GNUC_CONST;
void       uber_graph_set_dps          (UberGraph       *graph,
                                        gfloat           dps);
void       uber_graph_set_fps          (UberGraph       *graph,
                                        guint            fps);
void       uber_graph_redraw           (UberGraph       *graph);
void       uber_graph_set_format       (UberGraph       *graph,
                                        UberGraphFormat  format);
GtkWidget* uber_graph_get_labels       (UberGraph       *graph);
void       uber_graph_get_content_area (UberGraph       *graph,
                                        GdkRectangle    *rect);
void       uber_graph_add_label        (UberGraph       *graph,
                                        UberLabel       *label);
gboolean   uber_graph_get_show_xlines  (UberGraph       *graph);
void       uber_graph_set_show_xlines  (UberGraph       *graph,
                                        gboolean         show_xlines);
gboolean   uber_graph_get_show_xlabels (UberGraph       *graph);
void       uber_graph_set_show_xlabels (UberGraph       *graph,
                                        gboolean         show_xlabels);
gboolean   uber_graph_get_show_ylines  (UberGraph       *graph);
void       uber_graph_set_show_ylines  (UberGraph       *graph,
                                        gboolean         show_ylines);
void       uber_graph_scale_changed    (UberGraph       *graph);

G_END_DECLS

#endif /* __UBER_GRAPH_H__ */