gtk2_ardour/gtk-custom-ruler.h

   1 /* GTK - The GIMP Toolkit
   2  * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Library General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Library General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Library General Public
  15  * License along with this library; if not, write to the
  16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17  * Boston, MA 02111-1307, USA.
  18  */
  19
  20 /*
  21  * Modified by the GTK+ Team and others 1997-1999.  See the AUTHORS
  22  * file for a list of people on the GTK+ Team.  See the ChangeLog
  23  * files for a list of changes.  These files are distributed with
  24  * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
  25  */
  26
  27 /* modified by andreas meyer <hexx3000@gmx.de> */
  28
  29 #ifndef __GTK_CUSTOM_RULER_H__
  30 #define __GTK_CUSTOM_RULER_H__
  31
  32 #include <gdk/gdk.h>
  33 #include <gtk/gtkwidget.h>
  34
  35
  36 G_BEGIN_DECLS
  37
  38 #define GTK_TYPE_CUSTOM_RULER            (gtk_custom_ruler_get_type ())
  39 #define GTK_CUSTOM_RULER(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), GTK_TYPE_CUSTOM_RULER, GtkCustomRuler))
  40 #define GTK_CUSTOM_RULER_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), GTK_TYPE_CUSTOM_RULER, GtkCustomRulerClass))
  41 #define GTK_IS_CUSTOM_RULER(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GTK_TYPE_CUSTOM_RULER))
  42 #define GTK_IS_CUSTOM_RULER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_CUSTOM_RULER))
  43 #define GTK_CUSTOM_RULER_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_CUSTOM_RULER, GtkCustomRulerClass))
  44
  45 typedef struct _GtkCustomRuler          GtkCustomRuler;
  46 typedef struct _GtkCustomRulerClass     GtkCustomRulerClass;
  47 typedef struct _GtkCustomMetric         GtkCustomMetric;
  48 typedef struct _GtkCustomRulerMark      GtkCustomRulerMark;
  49
  50 struct _GtkCustomRuler {
  51   GtkWidget widget;
  52
  53   GdkPixmap *backing_store;
  54   GdkGC *non_gr_exp_gc;
  55   GtkCustomMetric *metric;
  56   gint xsrc, ysrc;
  57   gint slider_size;
  58   gboolean show_position;
  59
  60   /* The upper limit of the ruler (in points) */
  61   gdouble lower;
  62   /* The lower limit of the ruler */
  63   gdouble upper;
  64   /* The position of the mark on the ruler */
  65   gdouble position;
  66   /* The maximum size of the ruler */
  67   gdouble max_size;
  68 };
  69
  70 struct _GtkCustomRulerClass {
  71   GtkWidgetClass parent_class;
  72
  73   void (* draw_ticks) (GtkCustomRuler *ruler);
  74   void (* draw_pos)   (GtkCustomRuler *ruler);
  75 };
  76
  77 typedef enum {
  78    GtkCustomRulerMarkMajor,
  79    GtkCustomRulerMarkMinor,
  80    GtkCustomRulerMarkMicro
  81 } GtkCustomRulerMarkStyle;
  82
  83 struct _GtkCustomRulerMark {
  84   gchar                  *label;
  85   gdouble                 position;
  86   GtkCustomRulerMarkStyle style;
  87 };
  88
  89 struct _GtkCustomMetric {
  90   gfloat units_per_pixel;
  91   gint (* get_marks) (GtkCustomRulerMark **marks, gdouble lower, gdouble upper, gint maxchars);
  92 };
  93
  94 GType   gtk_custom_ruler_get_type            (void);
  95 void    gtk_custom_ruler_set_metric          (GtkCustomRuler *ruler, GtkCustomMetric *metric);
  96 void    gtk_custom_ruler_set_range           (GtkCustomRuler *ruler,
  97                                               gdouble lower,
  98                                               gdouble upper,
  99                                               gdouble position,
 100                                               gdouble  max_size);
 101 void    gtk_custom_ruler_draw_ticks          (GtkCustomRuler *ruler);
 102 void    gtk_custom_ruler_draw_pos            (GtkCustomRuler *ruler);
 103 void    gtk_custom_ruler_set_show_position   (GtkCustomRuler *rule, gboolean yn);
 104
 105 G_END_DECLS
 106
 107 #endif /* __GTK_CUSTOM_RULER_H__ */