| /* 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)); |
| } |
