summaryrefslogtreecommitdiff
path: root/gtk/gtkvolumebutton.c
blob: 9b81283ca44221793dcb1d8e8e6522267e657bb9 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
/* GTK - The GIMP Toolkit
 * Copyright (C) 2007 Red Hat, Inc.
 *
 * Authors:
 * - Bastien Nocera <bnocera@redhat.com>
 *
 * 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 2007.  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/. 
 */

#include <config.h>

#include <atk/atk.h>

#include "gtkvolumebutton.h"
#include "gtkstock.h"
#include "gtktooltip.h"
#include "gtkintl.h"

#include "gtkalias.h"

#define EPSILON (1e-10)

struct _GtkVolumeButton
{
  GtkScaleButton  parent;
};

static void	gtk_volume_button_class_init	(GtkVolumeButtonClass *klass);
static void	gtk_volume_button_init		(GtkVolumeButton      *button);
static gboolean	cb_query_tooltip                (GtkWidget            *button,
						 gint                  x,
						 gint                  y,
						 gboolean              keyboard_mode,
						 GtkTooltip           *tooltip,
						 gpointer              user_data);
static void	cb_value_changed		(GtkVolumeButton      *button,
						 gdouble               value,
						 gpointer              user_data);

G_DEFINE_TYPE (GtkVolumeButton, gtk_volume_button, GTK_TYPE_SCALE_BUTTON)

static void
gtk_volume_button_class_init (GtkVolumeButtonClass *klass)
{
}

static void
gtk_volume_button_init (GtkVolumeButton *button)
{
  GtkScaleButton *sbutton = GTK_SCALE_BUTTON (button);
  GtkObject *adj;
  const char *icons[] = {
	"audio-volume-muted",
	"audio-volume-high",
	"audio-volume-low",
	"audio-volume-medium",
	NULL
  };

  atk_object_set_name (gtk_widget_get_accessible (GTK_WIDGET (button)),
		       _("Volume"));
  atk_object_set_description (gtk_widget_get_accessible (GTK_WIDGET (button)),
		       _("Turns volume down or up"));
  atk_action_set_description (ATK_ACTION (gtk_widget_get_accessible (GTK_WIDGET (button))),
			      1,
			      _("Adjusts the volume"));

  atk_object_set_name (gtk_widget_get_accessible (sbutton->minus_button),
		       _("Volume Down"));
  atk_object_set_description (gtk_widget_get_accessible (sbutton->minus_button),
		       _("Decreases the volume"));
  gtk_widget_set_tooltip_text (sbutton->minus_button, _("Volume Down"));

  atk_object_set_name (gtk_widget_get_accessible (sbutton->plus_button),
		       _("Volume Up"));
  atk_object_set_description (gtk_widget_get_accessible (sbutton->plus_button),
		       _("Increases the volume"));
  gtk_widget_set_tooltip_text (sbutton->plus_button, _("Volume Up"));

  gtk_scale_button_set_icons (sbutton, icons);

  adj = gtk_adjustment_new (0., 0., 1., 0.02, 0.2, 0.);
  g_object_set (G_OBJECT (button),
		"adjustment", adj,
		"size", GTK_ICON_SIZE_SMALL_TOOLBAR,
		"has-tooltip", TRUE,
	       	NULL);

  g_signal_connect (G_OBJECT (button), "query-tooltip",
		    G_CALLBACK (cb_query_tooltip), NULL);
  g_signal_connect (G_OBJECT (button), "value-changed",
		    G_CALLBACK (cb_value_changed), NULL);
}

/**
 * gtk_volume_button_new
 *
 * Creates a #GtkVolumeButton, with a range between 0.0 and 1.0, with
 * a stepping of 0.02. Volume values can be obtained and modified using
 * the functions from #GtkScaleButton.
 *
 * Return value: a new #GtkVolumeButton
 *
 * Since: 2.12
 */
GtkWidget *
gtk_volume_button_new (void)
{
  GObject *button;
  button = g_object_new (GTK_TYPE_VOLUME_BUTTON, NULL);
  return GTK_WIDGET (button);
}

static gboolean
cb_query_tooltip (GtkWidget  *button,
		  gint        x,
		  gint        y,
		  gboolean    keyboard_mode,
		  GtkTooltip *tooltip,
		  gpointer    user_data)
{
  GtkScaleButton *scale_button = GTK_SCALE_BUTTON (button);
  GtkAdjustment *adj;
  gdouble val;
  char *str;
  AtkImage *image;

  image = ATK_IMAGE (gtk_widget_get_accessible (button));

  adj = gtk_scale_button_get_adjustment (scale_button);
  val = gtk_scale_button_get_value (scale_button);

  if (val < (adj->lower + EPSILON))
    {
      str = g_strdup (_("Muted"));
    }
  else if (val >= (adj->upper - EPSILON))
    {
      str = g_strdup (_("Full Volume"));
    }
  else
    {
      int percent;

      percent = (int) (100. * val / (adj->upper - adj->lower) + .5);

      /* Translators: this is the percentage of the current volume,
       * as used in the tooltip, eg. "49 %".
       * Translate the "%d" to "%Id" if you want to use localised digits,
       * or otherwise translate the "%d" to "%d".
       * Do not translate and do not include the "volume percentage|"
       * part in the translation!
       */
      str = g_strdup_printf (Q_("volume percentage|%d %%"), percent);
    }

  gtk_tooltip_set_text (tooltip, str);
  atk_image_set_image_description (image, str);
  g_free (str);

  return TRUE;
}

static void
cb_value_changed (GtkVolumeButton *button, gdouble value, gpointer user_data)
{
  gtk_widget_trigger_tooltip_query (GTK_WIDGET (button));
}


#define __GTK_VOLUME_BUTTON_C__
#include "gtkaliasdef.c"