forked from AuroraMiddleware/gtk
259 lines
7.2 KiB
C
259 lines
7.2 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 <glib/gi18n-lib.h>
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#include "gtktooltip.h"
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#include "gtkprivate.h"
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/**
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* GtkVolumeButton:
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*
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* `GtkVolumeButton` is a `GtkScaleButton` subclass tailored for
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* volume control.
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*
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* 
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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 char * 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 char * 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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int x,
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int 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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double 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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char **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.
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*
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* Note that if the symbolic icons are not available in your installed
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* theme, then the normal (potentially colorful) icons will 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", NULL, NULL,
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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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}
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/**
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* gtk_volume_button_new:
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*
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* Creates a `GtkVolumeButton`.
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*
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* The button has a range between 0.0 and 1.0, with a stepping of 0.02.
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* Volume values can be obtained and modified using the functions from
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* [class@Gtk.ScaleButton].
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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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int x,
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int 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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double val;
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char *str;
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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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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, double 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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