forked from AuroraMiddleware/gtk
268 lines
7.5 KiB
C
268 lines
7.5 KiB
C
/* GTK - The GIMP Toolkit
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* Copyright (C) 2007 Red Hat, Inc.
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*
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* Authors:
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* - Bastien Nocera <bnocera@redhat.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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/*
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* Modified by the GTK+ Team and others 2007. See the AUTHORS
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* file for a list of people on the GTK+ Team. See the ChangeLog
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* files for a list of changes. These files are distributed with
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* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
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*/
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#include "config.h"
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#include "gtkvolumebutton.h"
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#include "gtkadjustment.h"
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#include "gtkintl.h"
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#include "gtktooltip.h"
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#include "gtkprivate.h"
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/**
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* SECTION:gtkvolumebutton
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* @Short_description: A button which pops up a volume control
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* @Title: GtkVolumeButton
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*
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* #GtkVolumeButton is a subclass of #GtkScaleButton that has
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* been tailored for use as a volume control widget with suitable
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* icons, tooltips and accessible labels.
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*/
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typedef struct _GtkVolumeButtonClass GtkVolumeButtonClass;
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struct _GtkVolumeButtonClass
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{
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GtkScaleButtonClass parent_class;
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};
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#define EPSILON (1e-10)
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static const gchar * const icons[] =
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{
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"audio-volume-muted",
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"audio-volume-high",
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"audio-volume-low",
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"audio-volume-medium",
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NULL
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};
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static const gchar * const icons_symbolic[] =
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{
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"audio-volume-muted-symbolic",
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"audio-volume-high-symbolic",
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"audio-volume-low-symbolic",
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"audio-volume-medium-symbolic",
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NULL
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};
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enum
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{
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PROP_0,
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PROP_SYMBOLIC
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};
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static gboolean cb_query_tooltip (GtkWidget *button,
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gint x,
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gint y,
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gboolean keyboard_mode,
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GtkTooltip *tooltip,
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gpointer user_data);
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static void cb_value_changed (GtkVolumeButton *button,
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gdouble value,
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gpointer user_data);
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G_DEFINE_TYPE (GtkVolumeButton, gtk_volume_button, GTK_TYPE_SCALE_BUTTON)
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static gboolean
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get_symbolic (GtkScaleButton *button)
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{
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gchar **icon_list;
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gboolean ret;
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g_object_get (button, "icons", &icon_list, NULL);
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if (icon_list != NULL &&
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icon_list[0] != NULL &&
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g_str_equal (icon_list[0], icons_symbolic[0]))
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ret = TRUE;
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else
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ret = FALSE;
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g_strfreev (icon_list);
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return ret;
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}
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static void
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gtk_volume_button_set_property (GObject *object,
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guint prop_id,
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const GValue *value,
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GParamSpec *pspec)
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{
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GtkScaleButton *button = GTK_SCALE_BUTTON (object);
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switch (prop_id)
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{
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case PROP_SYMBOLIC:
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if (get_symbolic (button) != g_value_get_boolean (value))
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{
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if (g_value_get_boolean (value))
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gtk_scale_button_set_icons (button, (const char **) icons_symbolic);
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else
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gtk_scale_button_set_icons (button, (const char **) icons);
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g_object_notify_by_pspec (object, pspec);
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}
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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gtk_volume_button_get_property (GObject *object,
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guint prop_id,
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GValue *value,
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GParamSpec *pspec)
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{
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switch (prop_id)
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{
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case PROP_SYMBOLIC:
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g_value_set_boolean (value, get_symbolic (GTK_SCALE_BUTTON (object)));
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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gtk_volume_button_class_init (GtkVolumeButtonClass *klass)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
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gobject_class->set_property = gtk_volume_button_set_property;
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gobject_class->get_property = gtk_volume_button_get_property;
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/**
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* GtkVolumeButton:use-symbolic:
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*
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* Whether to use symbolic icons as the icons. Note that
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* if the symbolic icons are not available in your installed
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* theme, then the normal (potentially colorful) icons will
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* be used.
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*/
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g_object_class_install_property (gobject_class,
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PROP_SYMBOLIC,
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g_param_spec_boolean ("use-symbolic",
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P_("Use symbolic icons"),
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P_("Whether to use symbolic icons"),
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TRUE,
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GTK_PARAM_READWRITE|G_PARAM_CONSTRUCT|G_PARAM_EXPLICIT_NOTIFY));
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/* Bind class to template
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*/
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gtk_widget_class_set_template_from_resource (widget_class, "/org/gtk/libgtk/ui/gtkvolumebutton.ui");
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gtk_widget_class_bind_template_callback (widget_class, cb_query_tooltip);
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gtk_widget_class_bind_template_callback (widget_class, cb_value_changed);
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}
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static void
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gtk_volume_button_init (GtkVolumeButton *button)
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{
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GtkWidget *widget = GTK_WIDGET (button);
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gtk_widget_init_template (widget);
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/* The atk action description is not supported by GtkBuilder */
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atk_action_set_description (ATK_ACTION (gtk_widget_get_accessible (GTK_WIDGET (widget))),
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1, _("Adjusts the volume"));
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}
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/**
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* gtk_volume_button_new:
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*
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* Creates a #GtkVolumeButton, with a range between 0.0 and 1.0, with
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* a stepping of 0.02. Volume values can be obtained and modified using
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* the functions from #GtkScaleButton.
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*
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* Returns: a new #GtkVolumeButton
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*/
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GtkWidget *
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gtk_volume_button_new (void)
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{
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GObject *button;
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button = g_object_new (GTK_TYPE_VOLUME_BUTTON, NULL);
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return GTK_WIDGET (button);
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}
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static gboolean
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cb_query_tooltip (GtkWidget *button,
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gint x,
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gint y,
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gboolean keyboard_mode,
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GtkTooltip *tooltip,
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gpointer user_data)
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{
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GtkScaleButton *scale_button = GTK_SCALE_BUTTON (button);
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GtkAdjustment *adjustment;
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gdouble val;
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char *str;
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AtkImage *image;
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image = ATK_IMAGE (gtk_widget_get_accessible (button));
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adjustment = gtk_scale_button_get_adjustment (scale_button);
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val = gtk_scale_button_get_value (scale_button);
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if (val < (gtk_adjustment_get_lower (adjustment) + EPSILON))
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{
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str = g_strdup (_("Muted"));
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}
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else if (val >= (gtk_adjustment_get_upper (adjustment) - EPSILON))
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{
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str = g_strdup (_("Full Volume"));
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}
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else
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{
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int percent;
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percent = (int) (100. * val / (gtk_adjustment_get_upper (adjustment) - gtk_adjustment_get_lower (adjustment)) + .5);
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/* Translators: this is the percentage of the current volume,
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* as used in the tooltip, eg. "49 %".
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* Translate the "%d" to "%Id" if you want to use localised digits,
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* or otherwise translate the "%d" to "%d".
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*/
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str = g_strdup_printf (C_("volume percentage", "%d %%"), percent);
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}
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gtk_tooltip_set_text (tooltip, str);
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atk_image_set_image_description (image, str);
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g_free (str);
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return TRUE;
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}
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static void
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cb_value_changed (GtkVolumeButton *button, gdouble value, gpointer user_data)
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{
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gtk_widget_trigger_tooltip_query (GTK_WIDGET (button));
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}
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