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-rw-r--r--mate-volume-control/gvc-combo-box.c459
1 files changed, 459 insertions, 0 deletions
diff --git a/mate-volume-control/gvc-combo-box.c b/mate-volume-control/gvc-combo-box.c
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+++ b/mate-volume-control/gvc-combo-box.c
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+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
+ *
+ * Copyright (C) 2009 Bastien Nocera
+ * Copyright (C) 2014 Michal Ratajsky <[email protected]>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+#include <glib.h>
+#include <glib/gi18n.h>
+#include <glib-object.h>
+#include <gtk/gtk.h>
+
+#include <libmatemixer/matemixer.h>
+
+#include "gvc-combo-box.h"
+
+#define GVC_COMBO_BOX_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), GVC_TYPE_COMBO_BOX, GvcComboBoxPrivate))
+
+struct _GvcComboBoxPrivate
+{
+ GtkWidget *drop_box;
+ GtkWidget *start_box;
+ GtkWidget *end_box;
+ GtkWidget *label;
+ GtkWidget *button;
+ GtkTreeModel *model;
+ GtkWidget *combobox;
+ MateMixerSwitch *swtch;
+};
+
+enum {
+ COL_NAME,
+ COL_HUMAN_NAME,
+ NUM_COLS
+};
+
+enum {
+ CHANGING,
+ BUTTON_CLICKED,
+ LAST_SIGNAL
+};
+
+static guint signals[LAST_SIGNAL] = { 0, };
+
+enum {
+ PROP_0,
+ PROP_SWITCH,
+ PROP_LABEL,
+ PROP_SHOW_BUTTON,
+ PROP_BUTTON_LABEL,
+ N_PROPERTIES
+};
+
+static GParamSpec *properties[N_PROPERTIES] = { NULL, };
+
+static void gvc_combo_box_class_init (GvcComboBoxClass *klass);
+static void gvc_combo_box_init (GvcComboBox *combo);
+static void gvc_combo_box_dispose (GObject *object);
+
+#if GTK_CHECK_VERSION (3, 0, 0)
+G_DEFINE_TYPE (GvcComboBox, gvc_combo_box, GTK_TYPE_BOX)
+#else
+G_DEFINE_TYPE (GvcComboBox, gvc_combo_box, GTK_TYPE_HBOX)
+#endif
+
+MateMixerSwitch *
+gvc_combo_box_get_switch (GvcComboBox *combobox)
+{
+ g_return_val_if_fail (GVC_IS_COMBO_BOX (combobox), NULL);
+
+ return combobox->priv->swtch;
+}
+
+void
+gvc_combo_box_set_size_group (GvcComboBox *combobox,
+ GtkSizeGroup *group,
+ gboolean symmetric)
+{
+ g_return_if_fail (GVC_IS_COMBO_BOX (combobox));
+ g_return_if_fail (GTK_IS_SIZE_GROUP (group));
+
+ if (group != NULL) {
+ gtk_size_group_add_widget (group, combobox->priv->start_box);
+ if (symmetric == TRUE)
+ gtk_size_group_add_widget (group, combobox->priv->end_box);
+ }
+ gtk_widget_queue_draw (GTK_WIDGET (combobox));
+}
+
+static void
+on_switch_active_option_notify (MateMixerSwitch *swtch,
+ GParamSpec *pspec,
+ GvcComboBox *combobox)
+{
+ GtkTreeIter iter;
+ MateMixerSwitchOption *active;
+ gboolean cont;
+ const gchar *name;
+
+ active = mate_mixer_switch_get_active_option (swtch);
+ if G_UNLIKELY (active == NULL) {
+ g_warn_if_reached ();
+ return;
+ }
+
+ /* Select the newly activated switch option in the combo box */
+ name = mate_mixer_switch_option_get_name (active);
+ cont = gtk_tree_model_get_iter_first (combobox->priv->model, &iter);
+ while (cont == TRUE) {
+ gchar *current;
+
+ gtk_tree_model_get (combobox->priv->model, &iter,
+ COL_NAME, &current,
+ -1);
+ if (g_strcmp0 (name, current) == 0) {
+ gtk_combo_box_set_active_iter (GTK_COMBO_BOX (combobox->priv->combobox), &iter);
+ g_free (current);
+ return;
+ }
+ g_free (current);
+
+ cont = gtk_tree_model_iter_next (combobox->priv->model, &iter);
+ }
+ g_warning ("Could not find switch option '%s' in combo box", name);
+}
+
+static void
+gvc_combo_box_set_switch (GvcComboBox *combobox, MateMixerSwitch *swtch)
+{
+ MateMixerSwitchOption *active;
+ const GList *options;
+
+ g_return_if_fail (GVC_IS_COMBO_BOX (combobox));
+ g_return_if_fail (MATE_MIXER_IS_SWITCH (swtch));
+
+ combobox->priv->swtch = g_object_ref (swtch);
+
+ active = mate_mixer_switch_get_active_option (swtch);
+ options = mate_mixer_switch_list_options (swtch);
+ while (options != NULL) {
+ GtkTreeIter iter;
+ MateMixerSwitchOption *option = MATE_MIXER_SWITCH_OPTION (options->data);
+
+ gtk_list_store_insert_with_values (GTK_LIST_STORE (combobox->priv->model),
+ &iter,
+ G_MAXINT,
+ COL_NAME,
+ mate_mixer_switch_option_get_name (option),
+ COL_HUMAN_NAME,
+ mate_mixer_switch_option_get_label (option),
+ -1);
+
+ /* Select the currently active option of the switch */
+ if (option == active) {
+ gtk_combo_box_set_active_iter (GTK_COMBO_BOX (combobox->priv->combobox),
+ &iter);
+ }
+ options = options->next;
+ }
+
+ g_signal_connect (G_OBJECT (swtch),
+ "notify::active-option",
+ G_CALLBACK (on_switch_active_option_notify),
+ combobox);
+}
+
+static void
+gvc_combo_box_set_property (GObject *object,
+ guint prop_id,
+ const GValue *value,
+ GParamSpec *pspec)
+{
+ GvcComboBox *self = GVC_COMBO_BOX (object);
+
+ switch (prop_id) {
+ case PROP_SWITCH:
+ gvc_combo_box_set_switch (self, g_value_get_object (value));
+ break;
+ case PROP_LABEL:
+ gtk_label_set_text_with_mnemonic (GTK_LABEL (self->priv->label), g_value_get_string (value));
+ break;
+ case PROP_BUTTON_LABEL:
+ gtk_button_set_label (GTK_BUTTON (self->priv->button), g_value_get_string (value));
+ break;
+ case PROP_SHOW_BUTTON:
+ gtk_widget_set_visible (self->priv->button, g_value_get_boolean (value));
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static void
+gvc_combo_box_get_property (GObject *object,
+ guint prop_id,
+ GValue *value,
+ GParamSpec *pspec)
+{
+ GvcComboBox *self = GVC_COMBO_BOX (object);
+
+ switch (prop_id) {
+ case PROP_SWITCH:
+ g_value_set_object (value, self->priv->swtch);
+ break;
+ case PROP_LABEL:
+ g_value_set_string (value, gtk_label_get_text (GTK_LABEL (self->priv->label)));
+ break;
+ case PROP_BUTTON_LABEL:
+ g_value_set_string (value, gtk_button_get_label (GTK_BUTTON (self->priv->button)));
+ break;
+ case PROP_SHOW_BUTTON:
+ g_value_set_boolean (value, gtk_widget_get_visible (self->priv->button));
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static void
+gvc_combo_box_class_init (GvcComboBoxClass *klass)
+{
+ GObjectClass *object_class = G_OBJECT_CLASS (klass);
+
+ object_class->dispose = gvc_combo_box_dispose;
+ object_class->set_property = gvc_combo_box_set_property;
+ object_class->get_property = gvc_combo_box_get_property;
+
+ properties[PROP_SWITCH] =
+ g_param_spec_object ("switch",
+ "switch",
+ "The MateMixerSwitch",
+ MATE_MIXER_TYPE_SWITCH,
+ G_PARAM_READWRITE |
+ G_PARAM_CONSTRUCT_ONLY |
+ G_PARAM_STATIC_STRINGS);
+
+ properties[PROP_LABEL] =
+ g_param_spec_string ("label",
+ "label",
+ "The combo box label",
+ _("_Profile:"),
+ G_PARAM_READWRITE |
+ G_PARAM_CONSTRUCT |
+ G_PARAM_STATIC_STRINGS);
+
+ properties[PROP_SHOW_BUTTON] =
+ g_param_spec_boolean ("show-button",
+ "show-button",
+ "Whether to show the button",
+ FALSE,
+ G_PARAM_READWRITE |
+ G_PARAM_CONSTRUCT |
+ G_PARAM_STATIC_STRINGS);
+
+ properties[PROP_BUTTON_LABEL] =
+ g_param_spec_string ("button-label",
+ "button-label",
+ "The button's label",
+ "",
+ G_PARAM_READWRITE |
+ G_PARAM_CONSTRUCT |
+ G_PARAM_STATIC_STRINGS);
+
+ g_object_class_install_properties (object_class, N_PROPERTIES, properties);
+
+ signals[CHANGING] =
+ g_signal_new ("changing",
+ G_TYPE_FROM_CLASS (klass),
+ G_SIGNAL_RUN_LAST,
+ G_STRUCT_OFFSET (GvcComboBoxClass, changing),
+ NULL, NULL,
+ g_cclosure_marshal_VOID__VOID,
+ G_TYPE_NONE,
+ 1,
+ MATE_MIXER_TYPE_SWITCH_OPTION);
+
+ signals[BUTTON_CLICKED] =
+ g_signal_new ("button-clicked",
+ G_TYPE_FROM_CLASS (klass),
+ G_SIGNAL_RUN_LAST,
+ G_STRUCT_OFFSET (GvcComboBoxClass, button_clicked),
+ NULL, NULL,
+ g_cclosure_marshal_VOID__VOID,
+ G_TYPE_NONE,
+ 0,
+ G_TYPE_NONE);
+
+ g_type_class_add_private (klass, sizeof (GvcComboBoxPrivate));
+}
+
+static void
+on_combo_box_changed (GtkComboBox *widget, GvcComboBox *combobox)
+{
+ GtkTreeIter iter;
+ gchar *name;
+ MateMixerSwitchOption *option;
+
+ if G_UNLIKELY (gtk_combo_box_get_active_iter (GTK_COMBO_BOX (widget), &iter) == FALSE)
+ return;
+
+ gtk_tree_model_get (combobox->priv->model, &iter,
+ COL_NAME, &name,
+ -1);
+
+ option = mate_mixer_switch_get_option (combobox->priv->swtch, name);
+ if G_UNLIKELY (option == NULL) {
+ g_warn_if_reached ();
+ g_free (name);
+ return;
+ }
+
+ /* Inform that we are about to change the active option of the switch */
+ g_signal_emit (combobox, signals[CHANGING], 0, option);
+
+ mate_mixer_switch_set_active_option (combobox->priv->swtch, option);
+ g_free (name);
+}
+
+static void
+on_combo_box_button_clicked (GtkButton *button, GvcComboBox *combobox)
+{
+ /* The meaning of the button is defined by the owner, so only notify
+ * when it is clicked on */
+ g_signal_emit (combobox, signals[BUTTON_CLICKED], 0);
+}
+
+static void
+gvc_combo_box_init (GvcComboBox *combobox)
+{
+ GtkWidget *frame;
+ GtkCellRenderer *renderer;
+
+ frame = gtk_frame_new (NULL);
+ gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_NONE);
+
+ combobox->priv = GVC_COMBO_BOX_GET_PRIVATE (combobox);
+
+ combobox->priv->model = GTK_TREE_MODEL (gtk_list_store_new (NUM_COLS,
+ G_TYPE_STRING,
+ G_TYPE_STRING));
+
+ combobox->priv->combobox = gtk_combo_box_new_with_model (combobox->priv->model);
+
+ combobox->priv->label = gtk_label_new (NULL);
+ gtk_misc_set_alignment (GTK_MISC (combobox->priv->label), 0.0, 0.5);
+ gtk_label_set_mnemonic_widget (GTK_LABEL (combobox->priv->label),
+ combobox->priv->combobox);
+
+ renderer = gtk_cell_renderer_text_new ();
+ gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (combobox->priv->combobox),
+ renderer,
+ FALSE);
+ gtk_cell_layout_add_attribute (GTK_CELL_LAYOUT (combobox->priv->combobox),
+ renderer,
+ "text",
+ COL_HUMAN_NAME);
+
+#if GTK_CHECK_VERSION (3, 0, 0)
+ combobox->priv->drop_box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6);
+ combobox->priv->start_box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6);
+ combobox->priv->end_box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6);
+
+ /* Make sure the combo box does not get too long on long profile names */
+ g_object_set (G_OBJECT (renderer),
+ "ellipsize",
+ PANGO_ELLIPSIZE_END,
+ NULL);
+
+ gtk_combo_box_set_popup_fixed_width (GTK_COMBO_BOX (combobox->priv->combobox), FALSE);
+#else
+ combobox->priv->drop_box = gtk_hbox_new (FALSE, 6);
+ combobox->priv->start_box = gtk_hbox_new (FALSE, 6);
+ combobox->priv->end_box = gtk_hbox_new (FALSE, 6);
+#endif
+
+ gtk_box_pack_start (GTK_BOX (combobox),
+ frame,
+ TRUE, TRUE, 0);
+
+ gtk_box_pack_start (GTK_BOX (combobox->priv->drop_box),
+ combobox->priv->start_box,
+ FALSE, FALSE, 0);
+ gtk_box_pack_start (GTK_BOX (combobox->priv->start_box),
+ combobox->priv->label,
+ FALSE, FALSE, 0);
+ gtk_box_pack_start (GTK_BOX (combobox->priv->drop_box),
+ combobox->priv->combobox,
+ TRUE, TRUE, 0);
+
+ combobox->priv->button = gtk_button_new_with_label ("");
+
+ gtk_box_pack_start (GTK_BOX (combobox->priv->drop_box),
+ combobox->priv->button,
+ FALSE, FALSE, 0);
+ gtk_box_pack_start (GTK_BOX (combobox->priv->drop_box),
+ combobox->priv->end_box,
+ FALSE, FALSE, 0);
+
+ gtk_container_add (GTK_CONTAINER (frame), combobox->priv->drop_box);
+
+ g_signal_connect (G_OBJECT (combobox->priv->combobox),
+ "changed",
+ G_CALLBACK (on_combo_box_changed),
+ combobox);
+ g_signal_connect (G_OBJECT (combobox->priv->button),
+ "clicked",
+ G_CALLBACK (on_combo_box_button_clicked),
+ combobox);
+
+ gtk_widget_set_no_show_all (combobox->priv->button, TRUE);
+ gtk_widget_show_all (frame);
+}
+
+static void
+gvc_combo_box_dispose (GObject *object)
+{
+ GvcComboBox *combobox;
+
+ combobox = GVC_COMBO_BOX (object);
+
+ if G_LIKELY (combobox->priv->swtch != NULL) {
+ g_signal_handlers_disconnect_by_func (G_OBJECT (combobox->priv->swtch),
+ G_CALLBACK (on_switch_active_option_notify),
+ combobox);
+ g_clear_object (&combobox->priv->swtch);
+ }
+
+ g_clear_object (&combobox->priv->model);
+
+ G_OBJECT_CLASS (gvc_combo_box_parent_class)->dispose (object);
+}
+
+GtkWidget *
+gvc_combo_box_new (MateMixerSwitch *swtch, const gchar *label)
+{
+ return g_object_new (GVC_TYPE_COMBO_BOX,
+ "switch", swtch,
+ "label", label,
+#if GTK_CHECK_VERSION (3, 0, 0)
+ "orientation", GTK_ORIENTATION_HORIZONTAL,
+#endif
+ NULL);
+}