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/* 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 "gtkvolumebutton.h"
#include "gtkstock.h"
#include "gtktooltip.h"
#include "gtkintl.h"
/**
* SECTION:gtkvolumebutton
* @Short_description: A button which pops up a volume control
* @Title: GtkVolumeButton
*
* #GtkVolumeButton is a subclass of #GtkScaleButton that has
* been tailored for use as a volume control widget with suitable
* icons, tooltips and accessible labels.
*/
#define EPSILON (1e-10)
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);
GtkAdjustment *adj;
GtkWidget *minus_button, *plus_button;
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"));
minus_button = gtk_scale_button_get_minus_button (sbutton);
plus_button = gtk_scale_button_get_plus_button (sbutton);
atk_object_set_name (gtk_widget_get_accessible (minus_button),
_("Volume Down"));
atk_object_set_description (gtk_widget_get_accessible (minus_button),
_("Decreases the volume"));
gtk_widget_set_tooltip_text (minus_button, _("Volume Down"));
atk_object_set_name (gtk_widget_get_accessible (plus_button),
_("Volume Up"));
atk_object_set_description (gtk_widget_get_accessible (plus_button),
_("Increases the volume"));
gtk_widget_set_tooltip_text (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".
*/
str = g_strdup_printf (C_("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));
}
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