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* Copyright (C) 2004 Ronald Bultje <rbultje@ronald.bitfreak.net>
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* preferences.c: preferences screen
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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 Library 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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* 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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* Library General Public License for more details.
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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#include <glib/gi18n.h>
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#include <gst/interfaces/mixer.h>
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#include "preferences.h"
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static void gnome_volume_applet_preferences_class_init (GnomeVolumeAppletPreferencesClass *klass);
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static void gnome_volume_applet_preferences_init (GnomeVolumeAppletPreferences *prefs);
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static void gnome_volume_applet_preferences_dispose (GObject *object);
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static void gnome_volume_applet_preferences_response (GtkDialog *dialog,
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static void cb_dev_selected (GtkComboBox *box,
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static gboolean cb_track_select (GtkTreeSelection *selection,
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gboolean path_selected,
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static GtkDialogClass *parent_class = NULL;
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G_DEFINE_TYPE (GnomeVolumeAppletPreferences, gnome_volume_applet_preferences, GTK_TYPE_DIALOG)
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gnome_volume_applet_preferences_class_init (GnomeVolumeAppletPreferencesClass *klass)
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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GtkDialogClass *gtkdialog_class = (GtkDialogClass *) klass;
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parent_class = g_type_class_ref (GTK_TYPE_DIALOG);
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gobject_class->dispose = gnome_volume_applet_preferences_dispose;
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gtkdialog_class->response = gnome_volume_applet_preferences_response;
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gnome_volume_applet_preferences_init (GnomeVolumeAppletPreferences *prefs)
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GtkWidget *box, *label, *view;
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GtkTreeSelection *sel;
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GtkTreeViewColumn *col;
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GtkCellRenderer *render;
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/* make window look cute */
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gtk_window_set_title (GTK_WINDOW (prefs), _("Volume Control Preferences"));
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gtk_container_set_border_width (GTK_CONTAINER (prefs), 5);
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gtk_box_set_spacing (GTK_BOX (gtk_dialog_get_content_area (GTK_DIALOG(prefs))), 2);
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gtk_dialog_add_buttons (GTK_DIALOG (prefs),
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GTK_STOCK_CLOSE, GTK_RESPONSE_CLOSE,
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/* help goes here (future) */
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/* add a treeview for all the properties */
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box = gtk_vbox_new (FALSE, 6);
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gtk_container_set_border_width (GTK_CONTAINER (box), 5);
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label = gtk_label_new (_("Select the device and track to control."));
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gtk_misc_set_alignment (GTK_MISC (label), 0.0, 0.5);
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gtk_box_pack_start (GTK_BOX (box), label, FALSE, FALSE, 0);
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gtk_widget_show (label);
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prefs->optionmenu = GTK_WIDGET(gtk_combo_box_text_new ());
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cells = gtk_cell_layout_get_cells (GTK_CELL_LAYOUT (prefs->optionmenu));
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g_object_set (G_OBJECT (cells->data), "ellipsize", PANGO_ELLIPSIZE_END, NULL);
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gtk_box_pack_start (GTK_BOX (box), prefs->optionmenu, FALSE, FALSE, 0);
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gtk_widget_show (prefs->optionmenu);
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g_signal_connect (prefs->optionmenu, "changed",
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G_CALLBACK (cb_dev_selected), prefs);
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store = gtk_list_store_new (NUM_COLS,
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G_TYPE_STRING, G_TYPE_POINTER);
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prefs->treeview = gtk_tree_view_new_with_model (GTK_TREE_MODEL (store));
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gtk_tree_view_set_headers_visible (GTK_TREE_VIEW (prefs->treeview), FALSE);
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/* viewport for lots of tracks */
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view = gtk_scrolled_window_new (NULL, NULL);
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gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (view),
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GTK_POLICY_NEVER, GTK_POLICY_AUTOMATIC);
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gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (view),
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gtk_widget_set_size_request (view, -1, 100);
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gtk_container_add (GTK_CONTAINER (view), prefs->treeview);
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gtk_box_pack_start (GTK_BOX (box), view, TRUE, TRUE, 0);
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gtk_widget_show (prefs->treeview);
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gtk_widget_show (view);
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/* treeview internals */
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sel = gtk_tree_view_get_selection (GTK_TREE_VIEW (prefs->treeview));
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gtk_tree_selection_set_mode (sel, GTK_SELECTION_MULTIPLE);
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gtk_tree_selection_set_select_function (sel, cb_track_select, prefs, NULL);
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render = gtk_cell_renderer_text_new ();
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col = gtk_tree_view_column_new_with_attributes ("Track name", render,
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gtk_tree_view_column_set_clickable (col, TRUE);
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gtk_tree_view_append_column (GTK_TREE_VIEW (prefs->treeview), col);
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gtk_tree_view_set_search_column (GTK_TREE_VIEW (prefs->treeview), COL_LABEL);
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gtk_box_pack_start (GTK_BOX (gtk_dialog_get_content_area (GTK_DIALOG (prefs))), box,
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gtk_widget_show (box);
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gnome_volume_applet_preferences_new (PanelApplet *applet,
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GnomeVolumeAppletPreferences *prefs;
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prefs = g_object_new (GNOME_VOLUME_APPLET_TYPE_PREFERENCES, NULL);
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prefs->applet = g_object_ref (G_OBJECT (applet));
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for ( ; elements != NULL; elements = elements->next) {
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gchar *name = g_object_get_data (G_OBJECT (elements->data),
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"gnome-volume-applet-name");
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gtk_combo_box_text_append_text (GTK_COMBO_BOX_TEXT (prefs->optionmenu), name);
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gnome_volume_applet_preferences_change (prefs, mixer, tracks);
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return GTK_WIDGET (prefs);
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gnome_volume_applet_preferences_dispose (GObject *object)
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GnomeVolumeAppletPreferences *prefs = GNOME_VOLUME_APPLET_PREFERENCES (object);
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g_object_unref (G_OBJECT (prefs->applet));
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prefs->applet = NULL;
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gst_object_unref (GST_OBJECT (prefs->mixer));
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G_OBJECT_CLASS (parent_class)->dispose (object);
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gnome_volume_applet_preferences_response (GtkDialog *dialog,
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switch (response_id) {
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case GTK_RESPONSE_CLOSE:
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gtk_widget_destroy (GTK_WIDGET (dialog));
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if (((GtkDialogClass *) parent_class)->response)
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((GtkDialogClass *) parent_class)->response (dialog, response_id);
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* Change the element. Basically recreates this object internally.
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gnome_volume_applet_preferences_change (GnomeVolumeAppletPreferences *prefs,
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GtkTreeSelection *sel;
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gboolean change = (mixer != prefs->mixer), res;
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/* because the old list of tracks is cleaned out when the application removes
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* all the tracks, we need to keep a backup of the list before clearing it */
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GList *old_selected_tracks = g_list_copy (tracks);
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prefs->track_lock = TRUE;
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model = gtk_tree_view_get_model (GTK_TREE_VIEW (prefs->treeview));
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store = GTK_LIST_STORE (model);
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while (gtk_tree_model_get_iter_first (GTK_TREE_MODEL (store), &iter)) {
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gtk_list_store_remove (store, &iter);
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/* take/put reference */
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gst_object_replace ((GstObject **) &prefs->mixer, GST_OBJECT (mixer));
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/* select active element */
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model = gtk_combo_box_get_model (GTK_COMBO_BOX (prefs->optionmenu));
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for (res = gtk_tree_model_get_iter_first (model, &iter); res; res = gtk_tree_model_iter_next (model, &iter)) {
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gtk_tree_model_get (model, &iter, COL_LABEL, &label, -1);
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if (!strcmp (label, g_object_get_data (G_OBJECT (mixer), "gnome-volume-applet-name"))) {
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gtk_combo_box_set_active_iter (GTK_COMBO_BOX (prefs->optionmenu), &iter);
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/* now over to the tracks */
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model = gtk_tree_view_get_model (GTK_TREE_VIEW (prefs->treeview));
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store = GTK_LIST_STORE (model);
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sel = gtk_tree_view_get_selection (GTK_TREE_VIEW (prefs->treeview));
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for (item = gst_mixer_list_tracks (mixer); item; item = item->next) {
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GstMixerTrack *track = item->data;
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if (track->num_channels <= 0)
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gtk_list_store_append (store, &iter);
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gtk_list_store_set (store, &iter,
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COL_LABEL, track->label,
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/* select active tracks */
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for (tree_iter = g_list_first (old_selected_tracks); tree_iter; tree_iter = tree_iter->next) {
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GstMixerTrack *test_against = tree_iter->data;
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if (!strcmp (test_against->label, track->label))
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gtk_tree_selection_select_iter (sel, &iter);
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model = gtk_tree_view_get_model (GTK_TREE_VIEW (prefs->treeview));
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sel = gtk_tree_view_get_selection (GTK_TREE_VIEW (prefs->treeview));
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gtk_tree_selection_unselect_all (sel);
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for (res = gtk_tree_model_get_iter_first (model, &iter); res == TRUE; res = gtk_tree_model_iter_next (model, &iter)) {
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gtk_tree_model_get (model, &iter, COL_LABEL, &label, -1);
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/* select active tracks */
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for (tree_iter = g_list_first (old_selected_tracks); tree_iter; tree_iter = tree_iter->next) {
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GstMixerTrack *track = tree_iter->data;
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if (!strcmp (track->label, label))
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gtk_tree_selection_select_iter (sel, &iter);
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prefs->track_lock = FALSE;
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g_list_free (old_selected_tracks);
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* Select callback (menu/tree).
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cb_dev_selected (GtkComboBox *box,
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GnomeVolumeAppletPreferences *prefs = data;
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/* GnomeVolumeApplet *applet = (GnomeVolumeApplet *) prefs->applet; */
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if (gtk_combo_box_get_active_iter (box, &iter)) {
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gtk_tree_model_get (gtk_combo_box_get_model (box),
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&iter, COL_LABEL, &label, -1);
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value = gconf_value_new (GCONF_VALUE_STRING);
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gconf_value_set_string (value, label);
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panel_applet_gconf_set_value (PANEL_APPLET (prefs->applet),
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GNOME_VOLUME_APPLET_KEY_ACTIVE_ELEMENT,
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gconf_value_free (value);
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/* get the percent volume from a track */
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gnome_volume_applet_get_volume (GstMixer *mixer, GstMixerTrack *track)
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int *volumes, main_volume, range;
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if (track->num_channels == 0)
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volumes = g_new (gint, track->num_channels);
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gst_mixer_get_volume (mixer, track, volumes);
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main_volume = volumes[0];
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range = track->max_volume - track->min_volume;
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return 100 * (main_volume - track->min_volume) / range;
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cb_track_select (GtkTreeSelection *selection,
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gboolean path_selected,
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GnomeVolumeAppletPreferences *prefs = data;
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GtkTreeSelection *sel;
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GString *gconf_string;
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GstMixerTrack *selected_track; /* the track just selected */
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GnomeVolumeApplet *applet = (GnomeVolumeApplet*) prefs->applet; /* required to update the track settings */
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if (prefs->track_lock)
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gconf_string = g_string_new ("");
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gtk_tree_model_get_iter (model, &iter, path);
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gtk_tree_model_get (model, &iter, COL_LABEL, &label, COL_TRACK, &selected_track, -1);
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sel = gtk_tree_view_get_selection (GTK_TREE_VIEW (prefs->treeview));
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/* clear the list of selected tracks */
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if (applet->tracks) {
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g_list_free (applet->tracks);
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applet->tracks = NULL;
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if (gtk_tree_selection_count_selected_rows (sel) > 0) {
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/* add the ones already selected */
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for (lst = gtk_tree_selection_get_selected_rows (sel, &model); lst != NULL; lst = lst->next) {
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GstMixerTrack *curr = NULL;
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gtk_tree_model_get_iter (model, &iter, lst->data);
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gtk_tree_model_get (model, &iter, COL_LABEL, &it_label, COL_TRACK, &curr, -1);
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/* grab the main volume (they will all be the same, so it doesn't matter
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* which one we get) */
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volume_percent = gnome_volume_applet_get_volume (prefs->mixer, curr);
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if (strcmp (it_label, label)) {
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applet->tracks = g_list_append (applet->tracks, curr);
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if (!path_selected) {
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g_string_append_printf (gconf_string, "%s:", curr->label);
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gconf_string = g_string_append (gconf_string, curr->label);
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g_list_foreach (lst, (GFunc)gtk_tree_path_free, NULL);
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/* add the one just selected and adjust its volume if it's not the only one
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if (!path_selected) {
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gtk_tree_model_get_iter (model, &iter, path);
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gtk_tree_model_get (model, &iter, COL_TRACK, &curr, -1);
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gconf_string = g_string_append (gconf_string, curr->label);
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applet->tracks = g_list_append (applet->tracks, curr);
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/* unify the volume of this track with the others already added */
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if (g_list_length (applet->tracks) > 1) {
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gnome_volume_applet_adjust_volume (prefs->mixer, curr, volume_percent);
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value = gconf_value_new (GCONF_VALUE_STRING);
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gconf_value_set_string (value, gconf_string->str);
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panel_applet_gconf_set_value (PANEL_APPLET (prefs->applet),
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GNOME_VOLUME_APPLET_KEY_ACTIVE_TRACK,
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g_string_free (gconf_string, TRUE);
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gconf_value_free (value);
added
removed
mixer/preferences.c
