gtk/gtk/gtkscale.h
Matthias Clasen 26490a2dd7 Bug 565656 – Add marks to scales
Bug 565656 – Add marks to scales

        * gtk/gtkrange.[hc]: Add internal api to define 'stop values'
        that have a little resistance when dragging the slider over it.

        * gtk/gtk.symbols:
        * gtk/gtkscale.[hc] (gtk_scale_add_mark): New function to add
        a 'mark' to a scale, which will draws a tick, plus optionally
        some text, and makes the value a stop value.
        (gtk_scale_clear_values): Removes all marks.

        * tests/testscale.c: Test for marks on scales
        * tests/Makefile.am: Integrate it


svn path=/trunk/; revision=22149
2009-01-20 05:10:27 +00:00

112 lines
4.3 KiB
C

/* GTK - The GIMP Toolkit
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/*
* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
* file for a list of people on the GTK+ Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
*/
#if defined(GTK_DISABLE_SINGLE_INCLUDES) && !defined (__GTK_H_INSIDE__) && !defined (GTK_COMPILATION)
#error "Only <gtk/gtk.h> can be included directly."
#endif
#ifndef __GTK_SCALE_H__
#define __GTK_SCALE_H__
#include <gtk/gtkrange.h>
G_BEGIN_DECLS
#define GTK_TYPE_SCALE (gtk_scale_get_type ())
#define GTK_SCALE(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GTK_TYPE_SCALE, GtkScale))
#define GTK_SCALE_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GTK_TYPE_SCALE, GtkScaleClass))
#define GTK_IS_SCALE(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GTK_TYPE_SCALE))
#define GTK_IS_SCALE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_SCALE))
#define GTK_SCALE_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_SCALE, GtkScaleClass))
typedef struct _GtkScale GtkScale;
typedef struct _GtkScaleClass GtkScaleClass;
struct _GtkScale
{
GtkRange range;
gint GSEAL (digits);
guint GSEAL (draw_value) : 1;
guint GSEAL (value_pos) : 2;
};
struct _GtkScaleClass
{
GtkRangeClass parent_class;
gchar* (* format_value) (GtkScale *scale,
gdouble value);
void (* draw_value) (GtkScale *scale);
void (* get_layout_offsets) (GtkScale *scale,
gint *x,
gint *y);
/* Padding for future expansion */
void (*_gtk_reserved1) (void);
void (*_gtk_reserved2) (void);
void (*_gtk_reserved3) (void);
};
GType gtk_scale_get_type (void) G_GNUC_CONST;
void gtk_scale_set_digits (GtkScale *scale,
gint digits);
gint gtk_scale_get_digits (GtkScale *scale);
void gtk_scale_set_draw_value (GtkScale *scale,
gboolean draw_value);
gboolean gtk_scale_get_draw_value (GtkScale *scale);
void gtk_scale_set_value_pos (GtkScale *scale,
GtkPositionType pos);
GtkPositionType gtk_scale_get_value_pos (GtkScale *scale);
PangoLayout * gtk_scale_get_layout (GtkScale *scale);
void gtk_scale_get_layout_offsets (GtkScale *scale,
gint *x,
gint *y);
void gtk_scale_add_mark (GtkScale *scale,
gdouble value,
GtkPositionType position,
const gchar *markup);
void gtk_scale_clear_marks (GtkScale *scale);
/* internal API */
void _gtk_scale_clear_layout (GtkScale *scale);
void _gtk_scale_get_value_size (GtkScale *scale,
gint *width,
gint *height);
gchar * _gtk_scale_format_value (GtkScale *scale,
gdouble value);
G_END_DECLS
#endif /* __GTK_SCALE_H__ */