550 lines
20 KiB
C
550 lines
20 KiB
C
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
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*
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* Copyright (C) 2008 William Jon McCann
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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*/
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#include "config.h"
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#include <stdlib.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <glib.h>
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#include <glib/gi18n-lib.h>
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#include <gtk/gtk.h>
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#include <canberra-gtk.h>
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#include <pulse/pulseaudio.h>
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#include "gvc-balance-bar.h"
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#include "gvc-channel-map-private.h"
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#define SCALE_SIZE 128
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#define ADJUSTMENT_MAX_NORMAL 65536.0 /* PA_VOLUME_NORM */
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#define GVC_BALANCE_BAR_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), GVC_TYPE_BALANCE_BAR, GvcBalanceBarPrivate))
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struct GvcBalanceBarPrivate
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{
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GvcChannelMap *channel_map;
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GvcBalanceType btype;
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GtkWidget *scale_box;
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GtkWidget *start_box;
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GtkWidget *end_box;
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GtkWidget *label;
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GtkWidget *scale;
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GtkAdjustment *adjustment;
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GtkSizeGroup *size_group;
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gboolean symmetric;
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gboolean click_lock;
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};
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enum
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{
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PROP_0,
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PROP_CHANNEL_MAP,
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PROP_BALANCE_TYPE,
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};
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static void gvc_balance_bar_class_init (GvcBalanceBarClass *klass);
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static void gvc_balance_bar_init (GvcBalanceBar *balance_bar);
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static void gvc_balance_bar_finalize (GObject *object);
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static gboolean on_scale_button_press_event (GtkWidget *widget,
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GdkEventButton *event,
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GvcBalanceBar *bar);
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static gboolean on_scale_button_release_event (GtkWidget *widget,
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GdkEventButton *event,
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GvcBalanceBar *bar);
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static gboolean on_scale_scroll_event (GtkWidget *widget,
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GdkEventScroll *event,
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GvcBalanceBar *bar);
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static void on_adjustment_value_changed (GtkAdjustment *adjustment,
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GvcBalanceBar *bar);
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G_DEFINE_TYPE (GvcBalanceBar, gvc_balance_bar, GTK_TYPE_HBOX)
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static GtkWidget *
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_scale_box_new (GvcBalanceBar *bar)
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{
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GvcBalanceBarPrivate *priv = bar->priv;
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GtkWidget *box;
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GtkWidget *sbox;
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GtkWidget *ebox;
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GtkAdjustment *adjustment = bar->priv->adjustment;
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char *str_lower, *str_upper;
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gdouble lower, upper;
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bar->priv->scale_box = box = gtk_hbox_new (FALSE, 6);
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priv->scale = gtk_hscale_new (priv->adjustment);
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gtk_widget_set_size_request (priv->scale, SCALE_SIZE, -1);
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gtk_widget_set_name (priv->scale, "balance-bar-scale");
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gtk_rc_parse_string ("style \"balance-bar-scale-style\" {\n"
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" GtkScale::trough-side-details = 0\n"
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"}\n"
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"widget \"*.balance-bar-scale\" style : rc \"balance-bar-scale-style\"\n");
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bar->priv->start_box = sbox = gtk_hbox_new (FALSE, 6);
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gtk_box_pack_start (GTK_BOX (box), sbox, FALSE, FALSE, 0);
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gtk_box_pack_start (GTK_BOX (sbox), priv->label, FALSE, FALSE, 0);
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gtk_box_pack_start (GTK_BOX (box), priv->scale, TRUE, TRUE, 0);
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switch (bar->priv->btype) {
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case BALANCE_TYPE_RL:
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str_lower = g_strdup_printf ("<small>%s</small>", C_("balance", "Left"));
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str_upper = g_strdup_printf ("<small>%s</small>", C_("balance", "Right"));
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break;
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case BALANCE_TYPE_FR:
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str_lower = g_strdup_printf ("<small>%s</small>", C_("balance", "Rear"));
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str_upper = g_strdup_printf ("<small>%s</small>", C_("balance", "Front"));
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break;
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case BALANCE_TYPE_LFE:
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str_lower = g_strdup_printf ("<small>%s</small>", C_("balance", "Minimum"));
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str_upper = g_strdup_printf ("<small>%s</small>", C_("balance", "Maximum"));
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break;
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default:
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g_assert_not_reached ();
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}
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lower = gtk_adjustment_get_lower (adjustment);
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gtk_scale_add_mark (GTK_SCALE (priv->scale), lower,
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GTK_POS_BOTTOM, str_lower);
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g_free (str_lower);
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upper = gtk_adjustment_get_upper (adjustment);
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gtk_scale_add_mark (GTK_SCALE (priv->scale), upper,
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GTK_POS_BOTTOM, str_upper);
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g_free (str_upper);
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if (bar->priv->btype != BALANCE_TYPE_LFE) {
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gtk_scale_add_mark (GTK_SCALE (priv->scale),
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(upper - lower)/2 + lower,
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GTK_POS_BOTTOM, NULL);
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}
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bar->priv->end_box = ebox = gtk_hbox_new (FALSE, 6);
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gtk_box_pack_start (GTK_BOX (box), ebox, FALSE, FALSE, 0);
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gtk_range_set_update_policy (GTK_RANGE (priv->scale), GTK_UPDATE_CONTINUOUS);
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ca_gtk_widget_disable_sounds (bar->priv->scale, FALSE);
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gtk_widget_add_events (bar->priv->scale, GDK_SCROLL_MASK);
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g_signal_connect (G_OBJECT (bar->priv->scale), "button-press-event",
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G_CALLBACK (on_scale_button_press_event), bar);
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g_signal_connect (G_OBJECT (bar->priv->scale), "button-release-event",
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G_CALLBACK (on_scale_button_release_event), bar);
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g_signal_connect (G_OBJECT (bar->priv->scale), "scroll-event",
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G_CALLBACK (on_scale_scroll_event), bar);
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if (bar->priv->size_group != NULL) {
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gtk_size_group_add_widget (bar->priv->size_group, sbox);
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if (bar->priv->symmetric) {
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gtk_size_group_add_widget (bar->priv->size_group, ebox);
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}
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}
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gtk_scale_set_draw_value (GTK_SCALE (priv->scale), FALSE);
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return box;
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}
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void
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gvc_balance_bar_set_size_group (GvcBalanceBar *bar,
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GtkSizeGroup *group,
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gboolean symmetric)
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{
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g_return_if_fail (GVC_IS_BALANCE_BAR (bar));
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bar->priv->size_group = group;
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bar->priv->symmetric = symmetric;
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if (bar->priv->size_group != NULL) {
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gtk_size_group_add_widget (bar->priv->size_group,
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bar->priv->start_box);
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if (bar->priv->symmetric) {
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gtk_size_group_add_widget (bar->priv->size_group,
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bar->priv->end_box);
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}
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}
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gtk_widget_queue_draw (GTK_WIDGET (bar));
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}
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static const char *
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btype_to_string (guint btype)
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{
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switch (btype) {
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case BALANCE_TYPE_RL:
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return "Balance";
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case BALANCE_TYPE_FR:
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return "Fade";
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break;
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case BALANCE_TYPE_LFE:
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return "LFE";
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default:
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g_assert_not_reached ();
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}
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return NULL;
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}
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static void
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update_level_from_map (GvcBalanceBar *bar,
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GvcChannelMap *map)
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{
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const gdouble *volumes;
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gdouble val;
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g_debug ("Volume changed (for %s bar)", btype_to_string (bar->priv->btype));
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volumes = gvc_channel_map_get_volume (map);
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switch (bar->priv->btype) {
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case BALANCE_TYPE_RL:
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val = volumes[BALANCE];
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break;
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case BALANCE_TYPE_FR:
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val = volumes[FADE];
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break;
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case BALANCE_TYPE_LFE:
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val = volumes[LFE];
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break;
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default:
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g_assert_not_reached ();
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}
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gtk_adjustment_set_value (bar->priv->adjustment, val);
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}
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static void
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on_channel_map_volume_changed (GvcChannelMap *map,
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gboolean set,
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GvcBalanceBar *bar)
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{
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update_level_from_map (bar, map);
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}
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static void
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gvc_balance_bar_set_channel_map (GvcBalanceBar *bar,
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GvcChannelMap *map)
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{
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g_return_if_fail (GVC_BALANCE_BAR (bar));
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if (bar->priv->channel_map != NULL) {
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g_signal_handlers_disconnect_by_func (G_OBJECT (bar->priv->channel_map),
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on_channel_map_volume_changed, bar);
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g_object_unref (bar->priv->channel_map);
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}
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bar->priv->channel_map = g_object_ref (map);
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update_level_from_map (bar, map);
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g_signal_connect (G_OBJECT (map), "volume-changed",
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G_CALLBACK (on_channel_map_volume_changed), bar);
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g_object_notify (G_OBJECT (bar), "channel-map");
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}
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static void
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gvc_balance_bar_set_balance_type (GvcBalanceBar *bar,
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GvcBalanceType btype)
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{
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GtkWidget *frame;
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g_return_if_fail (GVC_BALANCE_BAR (bar));
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bar->priv->btype = btype;
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if (bar->priv->btype != BALANCE_TYPE_LFE) {
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bar->priv->adjustment = GTK_ADJUSTMENT (gtk_adjustment_new (0.0,
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-1.0,
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1.0,
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0.5,
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0.5,
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0.0));
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} else {
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bar->priv->adjustment = GTK_ADJUSTMENT (gtk_adjustment_new (0.0,
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0.0,
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ADJUSTMENT_MAX_NORMAL,
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ADJUSTMENT_MAX_NORMAL/100.0,
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ADJUSTMENT_MAX_NORMAL/10.0,
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0.0));
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}
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g_object_ref_sink (bar->priv->adjustment);
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g_signal_connect (bar->priv->adjustment,
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"value-changed",
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G_CALLBACK (on_adjustment_value_changed),
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bar);
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switch (btype) {
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case BALANCE_TYPE_RL:
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bar->priv->label = gtk_label_new_with_mnemonic (_("_Balance:"));
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break;
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case BALANCE_TYPE_FR:
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bar->priv->label = gtk_label_new_with_mnemonic (_("_Fade:"));
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break;
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case BALANCE_TYPE_LFE:
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bar->priv->label = gtk_label_new_with_mnemonic (_("_Subwoofer:"));
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break;
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default:
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g_assert_not_reached ();
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}
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gtk_misc_set_alignment (GTK_MISC (bar->priv->label),
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0.0,
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0.0);
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/* frame */
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frame = gtk_frame_new (NULL);
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gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_NONE);
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gtk_container_add (GTK_CONTAINER (bar), frame);
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/* box with scale */
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bar->priv->scale_box = _scale_box_new (bar);
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gtk_container_add (GTK_CONTAINER (frame), bar->priv->scale_box);
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gtk_widget_show_all (frame);
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gtk_widget_set_direction (bar->priv->scale, GTK_TEXT_DIR_LTR);
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gtk_label_set_mnemonic_widget (GTK_LABEL (bar->priv->label),
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bar->priv->scale);
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g_object_notify (G_OBJECT (bar), "balance-type");
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}
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static void
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gvc_balance_bar_set_property (GObject *object,
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guint prop_id,
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const GValue *value,
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GParamSpec *pspec)
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{
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GvcBalanceBar *self = GVC_BALANCE_BAR (object);
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switch (prop_id) {
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case PROP_CHANNEL_MAP:
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gvc_balance_bar_set_channel_map (self, g_value_get_object (value));
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break;
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case PROP_BALANCE_TYPE:
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gvc_balance_bar_set_balance_type (self, g_value_get_int (value));
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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gvc_balance_bar_get_property (GObject *object,
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guint prop_id,
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GValue *value,
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GParamSpec *pspec)
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{
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GvcBalanceBar *self = GVC_BALANCE_BAR (object);
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switch (prop_id) {
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case PROP_CHANNEL_MAP:
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g_value_set_object (value, self->priv->channel_map);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static GObject *
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gvc_balance_bar_constructor (GType type,
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guint n_construct_properties,
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GObjectConstructParam *construct_params)
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{
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return G_OBJECT_CLASS (gvc_balance_bar_parent_class)->constructor (type, n_construct_properties, construct_params);
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}
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static void
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gvc_balance_bar_class_init (GvcBalanceBarClass *klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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object_class->constructor = gvc_balance_bar_constructor;
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object_class->finalize = gvc_balance_bar_finalize;
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object_class->set_property = gvc_balance_bar_set_property;
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object_class->get_property = gvc_balance_bar_get_property;
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g_object_class_install_property (object_class,
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PROP_CHANNEL_MAP,
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g_param_spec_object ("channel-map",
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"channel map",
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"The channel map",
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GVC_TYPE_CHANNEL_MAP,
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G_PARAM_READWRITE));
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g_object_class_install_property (object_class,
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PROP_BALANCE_TYPE,
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g_param_spec_int ("balance-type",
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"balance type",
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"Whether the balance is right-left or front-rear",
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BALANCE_TYPE_RL, NUM_BALANCE_TYPES - 1, BALANCE_TYPE_RL,
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G_PARAM_READWRITE|G_PARAM_CONSTRUCT_ONLY));
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g_type_class_add_private (klass, sizeof (GvcBalanceBarPrivate));
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}
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static gboolean
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on_scale_button_press_event (GtkWidget *widget,
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GdkEventButton *event,
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GvcBalanceBar *bar)
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{
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bar->priv->click_lock = TRUE;
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return FALSE;
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}
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static gboolean
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on_scale_button_release_event (GtkWidget *widget,
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GdkEventButton *event,
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GvcBalanceBar *bar)
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{
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bar->priv->click_lock = FALSE;
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return FALSE;
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}
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static gboolean
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on_scale_scroll_event (GtkWidget *widget,
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GdkEventScroll *event,
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GvcBalanceBar *bar)
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{
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gdouble value;
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value = gtk_adjustment_get_value (bar->priv->adjustment);
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if (bar->priv->btype == BALANCE_TYPE_LFE) {
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if (event->direction == GDK_SCROLL_UP) {
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if (value + ADJUSTMENT_MAX_NORMAL/100.0 > ADJUSTMENT_MAX_NORMAL)
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value = ADJUSTMENT_MAX_NORMAL;
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else
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value = value + ADJUSTMENT_MAX_NORMAL/100.0;
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} else if (event->direction == GDK_SCROLL_DOWN) {
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if (value - ADJUSTMENT_MAX_NORMAL/100.0 < 0)
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value = 0.0;
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else
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value = value - ADJUSTMENT_MAX_NORMAL/100.0;
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}
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} else {
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if (event->direction == GDK_SCROLL_UP) {
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if (value + 0.01 > 1.0)
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value = 1.0;
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else
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value = value + 0.01;
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} else if (event->direction == GDK_SCROLL_DOWN) {
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if (value - 0.01 < 0)
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value = 0.0;
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else
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value = value - 0.01;
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}
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}
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gtk_adjustment_set_value (bar->priv->adjustment, value);
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return TRUE;
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}
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/* FIXME remove when we depend on a newer PA */
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static pa_cvolume *
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gvc_pa_cvolume_set_position (pa_cvolume *cv, const pa_channel_map *map, pa_channel_position_t t, pa_volume_t v) {
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unsigned c;
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gboolean good = FALSE;
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g_assert(cv);
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g_assert(map);
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g_return_val_if_fail(pa_cvolume_compatible_with_channel_map(cv, map), NULL);
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g_return_val_if_fail(t < PA_CHANNEL_POSITION_MAX, NULL);
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for (c = 0; c < map->channels; c++)
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if (map->map[c] == t) {
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cv->values[c] = v;
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good = TRUE;
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}
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return good ? cv : NULL;
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}
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static void
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on_adjustment_value_changed (GtkAdjustment *adjustment,
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GvcBalanceBar *bar)
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{
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gdouble val;
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pa_cvolume cv;
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const pa_channel_map *pa_map;
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if (bar->priv->channel_map == NULL)
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return;
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cv = *gvc_channel_map_get_cvolume (bar->priv->channel_map);
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val = gtk_adjustment_get_value (adjustment);
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pa_map = gvc_channel_map_get_pa_channel_map (bar->priv->channel_map);
|
|
|
|
switch (bar->priv->btype) {
|
|
case BALANCE_TYPE_RL:
|
|
pa_cvolume_set_balance (&cv, pa_map, val);
|
|
break;
|
|
case BALANCE_TYPE_FR:
|
|
pa_cvolume_set_fade (&cv, pa_map, val);
|
|
break;
|
|
case BALANCE_TYPE_LFE:
|
|
gvc_pa_cvolume_set_position (&cv, pa_map, PA_CHANNEL_POSITION_LFE, val);
|
|
break;
|
|
}
|
|
|
|
gvc_channel_map_volume_changed (bar->priv->channel_map, &cv, TRUE);
|
|
}
|
|
|
|
static void
|
|
gvc_balance_bar_init (GvcBalanceBar *bar)
|
|
{
|
|
bar->priv = GVC_BALANCE_BAR_GET_PRIVATE (bar);
|
|
}
|
|
|
|
static void
|
|
gvc_balance_bar_finalize (GObject *object)
|
|
{
|
|
GvcBalanceBar *bar;
|
|
|
|
g_return_if_fail (object != NULL);
|
|
g_return_if_fail (GVC_IS_BALANCE_BAR (object));
|
|
|
|
bar = GVC_BALANCE_BAR (object);
|
|
|
|
g_return_if_fail (bar->priv != NULL);
|
|
|
|
if (bar->priv->channel_map != NULL) {
|
|
g_signal_handlers_disconnect_by_func (G_OBJECT (bar->priv->channel_map),
|
|
on_channel_map_volume_changed, bar);
|
|
g_object_unref (bar->priv->channel_map);
|
|
}
|
|
|
|
G_OBJECT_CLASS (gvc_balance_bar_parent_class)->finalize (object);
|
|
}
|
|
|
|
GtkWidget *
|
|
gvc_balance_bar_new (const GvcChannelMap *channel_map, GvcBalanceType btype)
|
|
{
|
|
GObject *bar;
|
|
bar = g_object_new (GVC_TYPE_BALANCE_BAR,
|
|
"channel-map", channel_map,
|
|
"balance-type", btype,
|
|
NULL);
|
|
return GTK_WIDGET (bar);
|
|
}
|