/* GTK - The GIMP Toolkit * Copyright (C) 2007 Red Hat, Inc. * * Authors: * - Bastien Nocera * * 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 . */ /* * 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" #include "gtkprivate.h" /** * GtkVolumeButton: * * `GtkVolumeButton` is a `GtkScaleButton` subclass tailored for * volume control. * * ![An example GtkVolumeButton](volumebutton.png) */ typedef struct _GtkVolumeButtonClass GtkVolumeButtonClass; struct _GtkVolumeButtonClass { GtkScaleButtonClass parent_class; }; #define EPSILON (1e-10) static const char * const icons[] = { "audio-volume-muted", "audio-volume-high", "audio-volume-low", "audio-volume-medium", NULL }; static const char * 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, int x, int y, gboolean keyboard_mode, GtkTooltip *tooltip, gpointer user_data); static void cb_value_changed (GtkVolumeButton *button, double value, gpointer user_data); G_DEFINE_TYPE (GtkVolumeButton, gtk_volume_button, GTK_TYPE_SCALE_BUTTON) static gboolean get_symbolic (GtkScaleButton *button) { char **icon_list; gboolean ret; g_object_get (button, "icons", &icon_list, NULL); if (icon_list != NULL && icon_list[0] != NULL && g_str_equal (icon_list[0], icons_symbolic[0])) ret = TRUE; else ret = FALSE; g_strfreev (icon_list); return ret; } 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 (get_symbolic (button) != g_value_get_boolean (value)) { 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); g_object_notify_by_pspec (object, pspec); } 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: g_value_set_boolean (value, get_symbolic (GTK_SCALE_BUTTON (object))); 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. */ 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"), TRUE, GTK_PARAM_READWRITE|G_PARAM_CONSTRUCT|G_PARAM_EXPLICIT_NOTIFY)); /* 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); } /** * gtk_volume_button_new: * * Creates a `GtkVolumeButton`. * * The button has 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 * [class@Gtk.ScaleButton]. * * Returns: a new `GtkVolumeButton` */ 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, int x, int y, gboolean keyboard_mode, GtkTooltip *tooltip, gpointer user_data) { GtkScaleButton *scale_button = GTK_SCALE_BUTTON (button); GtkAdjustment *adjustment; double val; char *str; 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); g_free (str); return TRUE; } static void cb_value_changed (GtkVolumeButton *button, double value, gpointer user_data) { gtk_widget_trigger_tooltip_query (GTK_WIDGET (button)); }