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-rw-r--r--panels/sound/cc-device-combo-box.c213
1 files changed, 213 insertions, 0 deletions
diff --git a/panels/sound/cc-device-combo-box.c b/panels/sound/cc-device-combo-box.c
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--- /dev/null
+++ b/panels/sound/cc-device-combo-box.c
@@ -0,0 +1,213 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
+ *
+ * Copyright (C) 2018 Canonical Ltd.
+ *
+ * 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "cc-device-combo-box.h"
+#include "cc-sound-resources.h"
+
+struct _CcDeviceComboBox
+{
+ GtkComboBox parent_instance;
+
+ GtkListStore *device_model;
+
+ GvcMixerControl *mixer_control;
+ guint added_handler_id;
+ guint removed_handler_id;
+ guint active_update_handler_id;
+ gboolean is_output;
+};
+
+G_DEFINE_TYPE (CcDeviceComboBox, cc_device_combo_box, GTK_TYPE_COMBO_BOX)
+
+static void
+device_added_cb (CcDeviceComboBox *self,
+ guint id)
+{
+ GvcMixerUIDevice *device = NULL;
+ g_autofree gchar *label = NULL;
+ g_autofree gchar *icon_name = NULL;
+ const gchar *origin;
+ GtkTreeIter iter;
+
+ if (self->is_output)
+ device = gvc_mixer_control_lookup_output_id (self->mixer_control, id);
+ else
+ device = gvc_mixer_control_lookup_input_id (self->mixer_control, id);
+ if (device == NULL)
+ return;
+
+ origin = gvc_mixer_ui_device_get_origin (device);
+ if (origin && origin[0] != '\0')
+ {
+ label = g_strdup_printf ("%s - %s",
+ gvc_mixer_ui_device_get_description (device),
+ origin);
+ }
+ else
+ {
+ label = g_strdup (gvc_mixer_ui_device_get_description (device));
+ }
+
+ if (gvc_mixer_ui_device_get_icon_name (device) != NULL)
+ icon_name = g_strdup_printf ("%s-symbolic", gvc_mixer_ui_device_get_icon_name (device));
+
+ gtk_list_store_append (self->device_model, &iter);
+ gtk_list_store_set (self->device_model, &iter,
+ 0, label,
+ 1, icon_name,
+ 2, id,
+ -1);
+}
+
+static gboolean
+get_iter (CcDeviceComboBox *self,
+ guint id,
+ GtkTreeIter *iter)
+{
+ if (!gtk_tree_model_get_iter_first (GTK_TREE_MODEL (self->device_model), iter))
+ return FALSE;
+
+ do
+ {
+ guint i;
+
+ gtk_tree_model_get (GTK_TREE_MODEL (self->device_model), iter, 2, &i, -1);
+ if (i == id)
+ return TRUE;
+ } while (gtk_tree_model_iter_next (GTK_TREE_MODEL (self->device_model), iter));
+
+ return FALSE;
+}
+
+static void
+device_removed_cb (CcDeviceComboBox *self,
+ guint id)
+{
+ GtkTreeIter iter;
+
+ if (get_iter (self, id, &iter))
+ gtk_list_store_remove (self->device_model, &iter);
+}
+
+static void
+active_device_update_cb (CcDeviceComboBox *self,
+ guint id)
+{
+ GtkTreeIter iter;
+
+ if (get_iter (self, id, &iter))
+ gtk_combo_box_set_active_iter (GTK_COMBO_BOX (self), &iter);
+}
+
+static void
+cc_device_combo_box_dispose (GObject *object)
+{
+ CcDeviceComboBox *self = CC_DEVICE_COMBO_BOX (object);
+
+ g_clear_object (&self->mixer_control);
+
+ G_OBJECT_CLASS (cc_device_combo_box_parent_class)->dispose (object);
+}
+
+void
+cc_device_combo_box_class_init (CcDeviceComboBoxClass *klass)
+{
+ GObjectClass *object_class = G_OBJECT_CLASS (klass);
+ GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
+
+ object_class->dispose = cc_device_combo_box_dispose;
+
+ gtk_widget_class_set_template_from_resource (widget_class, "/org/gnome/control-center/sound/cc-device-combo-box.ui");
+
+ gtk_widget_class_bind_template_child (widget_class, CcDeviceComboBox, device_model);
+}
+
+void
+cc_device_combo_box_init (CcDeviceComboBox *self)
+{
+ g_resources_register (cc_sound_get_resource ());
+
+ gtk_widget_init_template (GTK_WIDGET (self));
+}
+
+void
+cc_device_combo_box_set_mixer_control (CcDeviceComboBox *self,
+ GvcMixerControl *mixer_control,
+ gboolean is_output)
+{
+ const gchar *added_signal, *removed_signal, *active_update_signal;
+ g_return_if_fail (CC_IS_DEVICE_COMBO_BOX (self));
+
+ if (self->mixer_control != NULL)
+ {
+ g_signal_handler_disconnect (self->mixer_control, self->added_handler_id);
+ self->added_handler_id = 0;
+ g_signal_handler_disconnect (self->mixer_control, self->removed_handler_id);
+ self->removed_handler_id = 0;
+ g_signal_handler_disconnect (self->mixer_control, self->active_update_handler_id);
+ self->active_update_handler_id = 0;
+ }
+ g_clear_object (&self->mixer_control);
+
+ self->mixer_control = g_object_ref (mixer_control);
+ self->is_output = is_output;
+ if (is_output)
+ {
+ added_signal = "output-added";
+ removed_signal = "output-removed";
+ active_update_signal = "active-output-update";
+ }
+ else
+ {
+ added_signal = "input-added";
+ removed_signal = "input-removed";
+ active_update_signal = "active-input-update";
+ }
+
+ self->added_handler_id = g_signal_connect_object (self->mixer_control,
+ added_signal,
+ G_CALLBACK (device_added_cb),
+ self, G_CONNECT_SWAPPED);
+ self->removed_handler_id = g_signal_connect_object (self->mixer_control,
+ removed_signal,
+ G_CALLBACK (device_removed_cb),
+ self, G_CONNECT_SWAPPED);
+ self->active_update_handler_id = g_signal_connect_object (self->mixer_control,
+ active_update_signal,
+ G_CALLBACK (active_device_update_cb),
+ self, G_CONNECT_SWAPPED);
+}
+
+GvcMixerUIDevice *
+cc_device_combo_box_get_device (CcDeviceComboBox *self)
+{
+ GtkTreeIter iter;
+ guint id;
+
+ g_return_val_if_fail (CC_IS_DEVICE_COMBO_BOX (self), NULL);
+
+ if (!gtk_combo_box_get_active_iter (GTK_COMBO_BOX (self), &iter))
+ return NULL;
+
+ gtk_tree_model_get (GTK_TREE_MODEL (self->device_model), &iter, 2, &id, -1);
+
+ if (self->is_output)
+ return gvc_mixer_control_lookup_output_id (self->mixer_control, id);
+ else
+ return gvc_mixer_control_lookup_input_id (self->mixer_control, id);
+}