include/sample-display.h

   1
   2 /*
   3  * The Real SoundTracker - GTK+ sample display widget (header)
   4  *
   5  * Copyright (C) 1998-2000 Michael Krause
   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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  20  */
  21
  22 #ifndef _SAMPLE_DISPLAY_H
  23 #define _SAMPLE_DISPLAY_H
  24
  25 #include <gdk/gdk.h>
  26 #include <gtk/gtkwidget.h>
  27
  28 #define SAMPLE_DISPLAY(obj)          GTK_CHECK_CAST (obj, sample_display_get_type (), SampleDisplay)
  29 #define SAMPLE_DISPLAY_CLASS(klass)  GTK_CHECK_CLASS_CAST (klass, sample_display_get_type (), SampleDisplayClass)
  30 #define IS_SAMPLE_DISPLAY(obj)       GTK_CHECK_TYPE (obj, sample_display_get_type ())
  31
  32 typedef struct _SampleDisplay       SampleDisplay;
  33 typedef struct _SampleDisplayClass  SampleDisplayClass;
  34
  35 enum {
  36     SAMPLE_DISPLAYCOL_BG,
  37     SAMPLE_DISPLAYCOL_FG,
  38     SAMPLE_DISPLAYCOL_LOOP,
  39     SAMPLE_DISPLAYCOL_MIXERPOS,
  40     SAMPLE_DISPLAYCOL_ZERO,
  41     SAMPLE_DISPLAYCOL_LAST
  42 };
  43
  44 struct _SampleDisplay
  45 {
  46     GtkWidget widget;
  47     int edit;                                     /* enable loop / selection editing */
  48
  49     int width, height;
  50     GdkGC *bg_gc, *fg_gc, *loop_gc, *mixerpos_gc;
  51     guint idle_handler;
  52
  53     void *data;
  54     int datalen;
  55     int datatype;
  56     gboolean datacopy;                            /* do we have our own copy */
  57     int datacopylen;
  58
  59     int win_start, win_length;
  60
  61     int mixerpos, old_mixerpos;                   /* current playing offset of the sample */
  62
  63     gboolean display_zero_line;
  64     GdkGC *zeroline_gc;
  65
  66     /* selection handling */
  67     int sel_start, sel_end;                       /* offsets into the sample data or -1 */
  68     int old_ss, old_se;
  69     int button;                                   /* button index which started the selection */
  70     int selecting;
  71     int selecting_x0;                             /* the coordinate where the mouse was clicked */
  72     int selecting_wins0;
  73
  74     /* loop points */
  75     int loop_start, loop_end;                     /* offsets into the sample data or -1 */
  76 };
  77
  78 struct _SampleDisplayClass
  79 {
  80     GtkWidgetClass parent_class;
  81
  82     GdkColor colors[SAMPLE_DISPLAYCOL_LAST];
  83
  84     void (*selection_changed)(SampleDisplay *s, int start, int end);
  85     void (*loop_changed)(SampleDisplay *s, int start, int end);
  86     void (*window_changed)(SampleDisplay *s, int start, int end);
  87 };
  88
  89 guint          sample_display_get_type            (void);
  90 GtkWidget*     sample_display_new                 (gboolean edit);
  91
  92 void           sample_display_set_data_16         (SampleDisplay *s, gint16 *data, int len, gboolean copy);
  93 void           sample_display_set_data_8          (SampleDisplay *s, gint8 *data, int len, gboolean copy);
  94 void           sample_display_set_loop            (SampleDisplay *s, int start, int end);
  95 void           sample_display_set_selection       (SampleDisplay *s, int start, int end);
  96 void           sample_display_set_mixer_position  (SampleDisplay *s, int offset);
  97 void           sample_display_enable_zero_line    (SampleDisplay *s, gboolean enable);
  98
  99 void           sample_display_set_window          (SampleDisplay *s, int start, int end);
 100
 101 #endif /* _SAMPLE_DISPLAY_H */