1 /* GTK - The GTK+ Toolkit
2 * Copyright (C) 2007 Red Hat, Inc.
5 * - Bastien Nocera <bnocera@redhat.com>
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version.
12 * This library 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 GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this library; if not, write to the
19 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
20 * Boston, MA 02111-1307, USA.
24 * Modified by the GTK+ Team and others 2007. See the AUTHORS
25 * file for a list of people on the GTK+ Team. See the ChangeLog
26 * files for a list of changes. These files are distributed with
27 * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
32 #include "gtkvolumebutton.h"
34 #include "gtktooltip.h"
39 #define EPSILON (1e-10)
41 struct _GtkVolumeButton
43 GtkScaleButton parent;
46 static gboolean cb_query_tooltip (GtkWidget *button,
49 gboolean keyboard_mode,
52 static void cb_value_changed (GtkVolumeButton *button,
56 G_DEFINE_TYPE (GtkVolumeButton, gtk_volume_button, GTK_TYPE_SCALE_BUTTON)
59 gtk_volume_button_class_init (GtkVolumeButtonClass *klass)
64 gtk_volume_button_init (GtkVolumeButton *button)
66 GtkScaleButton *sbutton = GTK_SCALE_BUTTON (button);
68 const char *icons[] = {
72 "audio-volume-medium",
76 atk_object_set_name (gtk_widget_get_accessible (GTK_WIDGET (button)),
78 atk_object_set_description (gtk_widget_get_accessible (GTK_WIDGET (button)),
79 _("Turns volume down or up"));
80 atk_action_set_description (ATK_ACTION (gtk_widget_get_accessible (GTK_WIDGET (button))),
82 _("Adjusts the volume"));
84 atk_object_set_name (gtk_widget_get_accessible (sbutton->minus_button),
86 atk_object_set_description (gtk_widget_get_accessible (sbutton->minus_button),
87 _("Decreases the volume"));
88 gtk_widget_set_tooltip_text (sbutton->minus_button, _("Volume Down"));
90 atk_object_set_name (gtk_widget_get_accessible (sbutton->plus_button),
92 atk_object_set_description (gtk_widget_get_accessible (sbutton->plus_button),
93 _("Increases the volume"));
94 gtk_widget_set_tooltip_text (sbutton->plus_button, _("Volume Up"));
96 gtk_scale_button_set_icons (sbutton, icons);
98 adj = gtk_adjustment_new (0., 0., 1., 0.02, 0.2, 0.);
99 g_object_set (G_OBJECT (button),
101 "size", GTK_ICON_SIZE_SMALL_TOOLBAR,
105 g_signal_connect (G_OBJECT (button), "query-tooltip",
106 G_CALLBACK (cb_query_tooltip), NULL);
107 g_signal_connect (G_OBJECT (button), "value-changed",
108 G_CALLBACK (cb_value_changed), NULL);
112 * gtk_volume_button_new
114 * Creates a #GtkVolumeButton, with a range between 0.0 and 1.0, with
115 * a stepping of 0.02. Volume values can be obtained and modified using
116 * the functions from #GtkScaleButton.
118 * Return value: a new #GtkVolumeButton
123 gtk_volume_button_new (void)
126 button = g_object_new (GTK_TYPE_VOLUME_BUTTON, NULL);
127 return GTK_WIDGET (button);
131 cb_query_tooltip (GtkWidget *button,
134 gboolean keyboard_mode,
138 GtkScaleButton *scale_button = GTK_SCALE_BUTTON (button);
144 image = ATK_IMAGE (gtk_widget_get_accessible (button));
146 adj = gtk_scale_button_get_adjustment (scale_button);
147 val = gtk_scale_button_get_value (scale_button);
149 if (val < (adj->lower + EPSILON))
151 str = g_strdup (_("Muted"));
153 else if (val >= (adj->upper - EPSILON))
155 str = g_strdup (_("Full Volume"));
161 percent = (int) (100. * val / (adj->upper - adj->lower) + .5);
163 /* Translators: this is the percentage of the current volume,
164 * as used in the tooltip, eg. "49 %".
165 * Translate the "%d" to "%Id" if you want to use localised digits,
166 * or otherwise translate the "%d" to "%d".
167 * Do not translate and do not include the "volume percentage|"
168 * part in the translation!
170 str = g_strdup_printf (Q_("volume percentage|%d %%"), percent);
173 gtk_tooltip_set_text (tooltip, str);
174 atk_image_set_image_description (image, str);
181 cb_value_changed (GtkVolumeButton *button, gdouble value, gpointer user_data)
183 gtk_widget_trigger_tooltip_query (GTK_WIDGET (button));
186 #define __GTK_VOLUME_BUTTON_C__
187 #include "gtkaliasdef.c"