src/hid/gtk/gui-trackball.h

   1 /*
   2  *                            COPYRIGHT
   3  *
   4  *  PCB, interactive printed circuit board design
   5  *  Copyright (C) 2009  PCB Contributors (see ChangeLog for details)
   6  *
   7  *  This program is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License as published by
   9  *  the Free Software Foundation; either version 2 of the License, or
  10  *  (at your option) any later version.
  11  *
  12  *  This program is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *  GNU General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU General Public License
  18  *  along with this program; if not, write to the Free Software
  19  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20  *
  21  *  Contact addresses for paper mail and Email:
  22  *  Thomas Nau, Schlehenweg 15, 88471 Baustetten, Germany
  23  *  Thomas.Nau@rz.uni-ulm.de
  24  *
  25  */
  26
  27 #ifndef __GHID_TRACKBALL_H__
  28 #define __GHID_TRACKBALL_H__
  29
  30
  31 #define GHID_TYPE_TRACKBALL           (ghid_trackball_get_type())
  32 #define GHID_TRACKBALL(obj)           (G_TYPE_CHECK_INSTANCE_CAST ((obj), GHID_TYPE_TRACKBALL, GhidTrackball))
  33 #define GHID_TRACKBALL_CLASS(klass)   (G_TYPE_CHECK_CLASS_CAST ((klass),  GHID_TYPE_TRACKBALL, GhidTrackballClass))
  34 #define GHID_IS_TRACKBALL(obj)        (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GHID_TYPE_TRACKBALL))
  35 #define GHID_TRACKBALL_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj),  GHID_TYPE_TRACKBALL, GhidTrackballClass))
  36
  37 typedef struct _GhidTrackballClass GhidTrackballClass;
  38 typedef struct _GhidTrackball GhidTrackball;
  39
  40
  41 struct _GhidTrackballClass
  42 {
  43   GtkVBoxClass parent_class;
  44
  45   void (*rotation_changed) (GhidTrackball *ball, gpointer rotation, gpointer user_data);
  46   void (*view_2d_changed) (GhidTrackball *ball, gboolean view_2d, gpointer user_data);
  47 };
  48
  49 struct _GhidTrackball
  50 {
  51   GtkVBox parent_instance;
  52
  53   GtkWidget *drawing_area;
  54   GtkWidget *view_2d;
  55
  56   gboolean dragging;
  57   gdouble x1, y1;
  58
  59   float quart1[4];
  60   float quart2[4];
  61 };
  62
  63
  64 GType ghid_trackball_get_type (void);
  65
  66 GtkWidget *ghid_trackball_new (void);
  67
  68 #endif /* __GHID_TRACKBALL_H__ */