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/*
 * gMathView, mathematic expressions viewing & editing widget
 *
 *  # Widget header
 *
 * Author : Guillaume Seguin
 * Email : guillaume@segu.in
 *
 * Copyright (c) 2007 Guillaume Seguin <guillaume@segu.in>
 *
 * 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 2
 * 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, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA  02110-1301, USA.
 */

#ifndef _GMATHVIEW_H
#define _GMATHVIEW_H

#include <gtk/gtk.h>
#include <cairo.h>

#include <gmathlib.h>
#include <gmathcairo.h>

#define OUTLINE_WIDTH       1
#define BASE_OFFSET         2

G_BEGIN_DECLS

#define G_TYPE_MATH_VIEW             (g_math_view_get_type ())
#define G_MATH_VIEW(obj)             (G_TYPE_CHECK_INSTANCE_CAST ((obj), \
                                      G_TYPE_MATH_VIEW, GMathView))
#define G_MATH_VIEW_CLASS(obj)       (G_TYPE_CHECK_CLASS_CAST ((obj), \
                                      G_MATH_VIEW, GMathViewClass))
#define IS_G_MATH_VIEW(obj)          (G_TYPE_CHECK_INSTANCE_TYPE ((obj), \
                                      G_TYPE_MATH_VIEW))
#define IS_G_MATH_VIEW_CLASS(obj)    (G_TYPE_CHECK_CLASS_TYPE ((obj), \
                                      G_TYPE_MATH_VIEW))
#define G_MATH_VIEW_GET_CLASS        (G_TYPE_INSTANCE_GET_CLASS ((obj), \
                                      G_TYPE_MATH_VIEW, GMathViewClass))

typedef struct _GMathView           GMathView;
typedef struct _GMathViewClass      GMathViewClass;

struct _GMathView
{
    GtkDrawingArea      parent;
};

struct _GMathViewClass
{
    GtkDrawingAreaClass parent_class;
};

typedef enum
{
    GMathSelectionNone,
    GMathSelectionOutline,
    GMathSelectionHighlight
} GMathSelectionType;

GType
g_math_view_get_type (void) G_GNUC_CONST;

GtkWidget*
g_math_view_new (void);

void
g_math_view_update (GMathView *mathview);

GMathContext*
g_math_view_get_context (GMathView *mathview);

GMathFormula*
g_math_view_get_formula (GMathView *mathview);

void
g_math_view_set_formula (GMathView *mathview, GMathFormula *formula);

gboolean
g_math_view_get_editor_mode (GMathView *mathview);

void
g_math_view_set_editor_mode (GMathView *mathview, gboolean editor_mode);

G_END_DECLS

/* Helper functions */

cairo_surface_t*
g_math_view_copy_surface (cairo_surface_t *source);

void
g_math_view_outline_boxed (cairo_t *cr, GMathBoxed *boxed);

void
g_math_view_highlight_boxed (cairo_t *cr, GMathBoxed *boxed);

#endif