278 lines
8.0 KiB
C
278 lines
8.0 KiB
C
/* 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);
|
|
|
|
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));
|
|
}
|
|
|
|
static void
|
|
gtk_volume_button_init (GtkVolumeButton *button)
|
|
{
|
|
GtkScaleButton *sbutton = GTK_SCALE_BUTTON (button);
|
|
GtkAdjustment *adj;
|
|
GtkWidget *minus_button, *plus_button;
|
|
|
|
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, (const char **) 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 *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));
|
|
}
|