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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, see <http://www.gnu.org/licenses/>.
*/
/*
* 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 "gtkadjustment.h"
#include "gtkintl.h"
#include "gtktooltip.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 const gchar * const icons[] =
{
"audio-volume-muted",
"audio-volume-high",
"audio-volume-low",
"audio-volume-medium",
NULL
};
static const gchar * const icons_symbolic[] =
{
"audio-volume-muted-symbolic",
"audio-volume-high-symbolic",
"audio-volume-low-symbolic",
"audio-volume-medium-symbolic",
NULL
};
enum
{
PROP_0,
PROP_SYMBOLIC
};
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_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GtkScaleButton *button = GTK_SCALE_BUTTON (object);
switch (prop_id)
{
case PROP_SYMBOLIC:
if (g_value_get_boolean (value))
gtk_scale_button_set_icons (button, (const char **) icons_symbolic);
else
gtk_scale_button_set_icons (button, (const char **) icons);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_volume_button_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
switch (prop_id)
{
case PROP_SYMBOLIC: {
char **icon_list;
g_object_get (object, "icons", &icon_list, NULL);
if (icon_list != NULL &&
icon_list[0] != NULL &&
g_str_equal (icon_list[0], icons_symbolic[0]))
g_value_set_boolean (value, TRUE);
else
g_value_set_boolean (value, FALSE);
g_strfreev (icon_list);
break;
}
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_volume_button_class_init (GtkVolumeButtonClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
gobject_class->set_property = gtk_volume_button_set_property;
gobject_class->get_property = gtk_volume_button_get_property;
/**
* GtkVolumeButton:use-symbolic:
*
* Whether to use symbolic icons as the icons. Note that
* if the symbolic icons are not available in your installed
* theme, then the normal (potentially colorful) icons will
* be used.
*
* Since: 3.0
*/
g_object_class_install_property (gobject_class,
PROP_SYMBOLIC,
g_param_spec_boolean ("use-symbolic",
P_("Use symbolic icons"),
P_("Whether to use symbolic icons"),
FALSE,
G_PARAM_READWRITE));
/* Bind class to template
*/
gtk_widget_class_set_template_from_resource (widget_class, "/org/gtk/libgtk/ui/gtkvolumebutton.ui");
gtk_widget_class_bind_template_callback (widget_class, cb_query_tooltip);
gtk_widget_class_bind_template_callback (widget_class, cb_value_changed);
}
static void
gtk_volume_button_init (GtkVolumeButton *button)
{
GtkWidget *widget = GTK_WIDGET (button);
gtk_widget_init_template (widget);
/* The atk action description is not supported by GtkBuilder */
atk_action_set_description (ATK_ACTION (gtk_widget_get_accessible (GTK_WIDGET (widget))),
1, _("Adjusts the volume"));
}
/**
* 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 *adjustment;
gdouble val;
char *str;
AtkImage *image;
image = ATK_IMAGE (gtk_widget_get_accessible (button));
adjustment = gtk_scale_button_get_adjustment (scale_button);
val = gtk_scale_button_get_value (scale_button);
if (val < (gtk_adjustment_get_lower (adjustment) + EPSILON))
{
str = g_strdup (_("Muted"));
}
else if (val >= (gtk_adjustment_get_upper (adjustment) - EPSILON))
{
str = g_strdup (_("Full Volume"));
}
else
{
int percent;
percent = (int) (100. * val / (gtk_adjustment_get_upper (adjustment) - gtk_adjustment_get_lower (adjustment)) + .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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