/* GTK - The GIMP Toolkit
 * Copyright (C) 2007 Carlos Garnacho <carlos@imendio.com>
 *
 * This library 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 library 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 library. If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef __GTK_TIMELINE_H__
#define __GTK_TIMELINE_H__

#include <glib-object.h>
#include <gtk/gtkenums.h>
#include <gtk/gtkwidget.h>
#include <gdk/gdk.h>

G_BEGIN_DECLS

#define GTK_TYPE_TIMELINE                 (gtk_timeline_get_type ())
#define GTK_TIMELINE(obj)                 (G_TYPE_CHECK_INSTANCE_CAST ((obj), GTK_TYPE_TIMELINE, GtkTimeline))
#define GTK_TIMELINE_CLASS(klass)         (G_TYPE_CHECK_CLASS_CAST ((klass), GTK_TYPE_TIMELINE, GtkTimelineClass))
#define GTK_IS_TIMELINE(obj)              (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GTK_TYPE_TIMELINE))
#define GTK_IS_TIMELINE_CLASS(klass)      (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_TIMELINE))
#define GTK_TIMELINE_GET_CLASS(obj)       (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_TIMELINE, GtkTimelineClass))

typedef struct GtkTimeline      GtkTimeline;
typedef struct GtkTimelineClass GtkTimelineClass;

typedef enum {
  GTK_TIMELINE_DIRECTION_FORWARD,
  GTK_TIMELINE_DIRECTION_BACKWARD
} GtkTimelineDirection;

typedef enum {
  GTK_TIMELINE_PROGRESS_LINEAR,
  GTK_TIMELINE_PROGRESS_EASE,
  GTK_TIMELINE_PROGRESS_EASE_IN,
  GTK_TIMELINE_PROGRESS_EASE_OUT,
  GTK_TIMELINE_PROGRESS_EASE_IN_OUT
} GtkTimelineProgressType;

struct GtkTimeline
{
  GObject parent_instance;
  gpointer priv;
};

struct GtkTimelineClass
{
  GObjectClass parent_class;

  void (* started)           (GtkTimeline *timeline);
  void (* finished)          (GtkTimeline *timeline);
  void (* paused)            (GtkTimeline *timeline);

  void (* frame)             (GtkTimeline *timeline,
			      gdouble      progress);

  void (* __gtk_reserved1) (void);
  void (* __gtk_reserved2) (void);
  void (* __gtk_reserved3) (void);
  void (* __gtk_reserved4) (void);
};


GType                   gtk_timeline_get_type          (void) G_GNUC_CONST;

GtkTimeline *           gtk_timeline_new               (GtkWidget               *widget,
                                                        guint                    duration);

void                    gtk_timeline_start             (GtkTimeline             *timeline);
void                    gtk_timeline_pause             (GtkTimeline             *timeline);
void                    gtk_timeline_rewind            (GtkTimeline             *timeline);

gboolean                gtk_timeline_is_running        (GtkTimeline             *timeline);
guint                   gtk_timeline_get_elapsed_time  (GtkTimeline             *timeline);

gboolean                gtk_timeline_get_loop          (GtkTimeline             *timeline);
void                    gtk_timeline_set_loop          (GtkTimeline             *timeline,
                                                        gboolean                 loop);

guint                   gtk_timeline_get_duration      (GtkTimeline             *timeline);
void                    gtk_timeline_set_duration      (GtkTimeline             *timeline,
                                                        guint                    duration);

GdkFrameClock *         gtk_timeline_get_frame_clock   (GtkTimeline             *timeline);
void                    gtk_timeline_set_frame_clock   (GtkTimeline             *timeline,
                                                        GdkFrameClock           *frame_clock);

GdkScreen *             gtk_timeline_get_screen        (GtkTimeline             *timeline);
void                    gtk_timeline_set_screen        (GtkTimeline             *timeline,
                                                        GdkScreen               *screen);

GtkWidget *             gtk_timeline_get_widget        (GtkTimeline             *timeline);
void                    gtk_timeline_set_widget        (GtkTimeline             *timeline,
                                                        GtkWidget               *widget);

GtkTimelineDirection    gtk_timeline_get_direction     (GtkTimeline             *timeline);
void                    gtk_timeline_set_direction     (GtkTimeline             *timeline,
                                                        GtkTimelineDirection     direction);

gdouble                 gtk_timeline_get_progress      (GtkTimeline             *timeline);

GtkTimelineProgressType gtk_timeline_get_progress_type (GtkTimeline             *timeline);
void                    gtk_timeline_set_progress_type (GtkTimeline             *timeline,
                                                        GtkTimelineProgressType  progress_type);

G_END_DECLS

#endif /* _GTK_TIMELINE_H__ */