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-rw-r--r--mate-volume-control/src/gvc-balance-bar.c552
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diff --git a/mate-volume-control/src/gvc-balance-bar.c b/mate-volume-control/src/gvc-balance-bar.c
deleted file mode 100644
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--- a/mate-volume-control/src/gvc-balance-bar.c
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-/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
- *
- * Copyright (C) 2008 William Jon McCann
- * 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 <canberra-gtk.h>
-#include <libmatemixer/matemixer.h>
-
-#include "gvc-balance-bar.h"
-
-#define BALANCE_BAR_STYLE \
- "style \"balance-bar-scale-style\" {\n" \
- " GtkScale::trough-side-details = 0\n" \
- "}\n" \
- "widget \"*.balance-bar-scale\" style : rc \"balance-bar-scale-style\"\n"
-
-#define SCALE_SIZE 128
-#define GVC_BALANCE_BAR_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), GVC_TYPE_BALANCE_BAR, GvcBalanceBarPrivate))
-
-struct _GvcBalanceBarPrivate
-{
- GvcBalanceType btype;
- GtkWidget *scale_box;
- GtkWidget *start_box;
- GtkWidget *end_box;
- GtkWidget *label;
- GtkWidget *scale;
- GtkAdjustment *adjustment;
- GtkSizeGroup *size_group;
- gboolean symmetric;
- MateMixerStreamControl *control;
- gint lfe_channel;
-};
-
-enum
-{
- PROP_0,
- PROP_CONTROL,
- PROP_BALANCE_TYPE,
- N_PROPERTIES
-};
-
-static GParamSpec *properties[N_PROPERTIES] = { NULL, };
-
-static void gvc_balance_bar_class_init (GvcBalanceBarClass *klass);
-static void gvc_balance_bar_init (GvcBalanceBar *balance_bar);
-static void gvc_balance_bar_dispose (GObject *object);
-
-static gboolean on_scale_scroll_event (GtkWidget *widget,
- GdkEventScroll *event,
- GvcBalanceBar *bar);
-
-static void on_adjustment_value_changed (GtkAdjustment *adjustment,
- GvcBalanceBar *bar);
-
-#if GTK_CHECK_VERSION (3, 0, 0)
-G_DEFINE_TYPE (GvcBalanceBar, gvc_balance_bar, GTK_TYPE_BOX)
-#else
-G_DEFINE_TYPE (GvcBalanceBar, gvc_balance_bar, GTK_TYPE_HBOX)
-#endif
-
-static void
-create_scale_box (GvcBalanceBar *bar)
-{
-#if GTK_CHECK_VERSION (3, 0, 0)
- bar->priv->scale_box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6);
- bar->priv->start_box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6);
- bar->priv->end_box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6);
- bar->priv->scale = gtk_scale_new (GTK_ORIENTATION_HORIZONTAL,
- bar->priv->adjustment);
-#if GTK_CHECK_VERSION (3, 4, 0)
- /* Balance and fade scales do not have an origin */
- if (bar->priv->btype != BALANCE_TYPE_LFE)
- gtk_scale_set_has_origin (GTK_SCALE (bar->priv->scale), FALSE);
-#endif
-#else
- bar->priv->scale_box = gtk_hbox_new (FALSE, 6);
- bar->priv->start_box = gtk_hbox_new (FALSE, 6);
- bar->priv->end_box = gtk_hbox_new (FALSE, 6);
- bar->priv->scale = gtk_hscale_new (bar->priv->adjustment);
-
- /* GTK2 way to remove the origin */
- if (bar->priv->btype != BALANCE_TYPE_LFE) {
- gtk_rc_parse_string (BALANCE_BAR_STYLE);
- gtk_widget_set_name (bar->priv->scale, "balance-bar-scale");
- }
-#endif
-
- gtk_widget_set_size_request (bar->priv->scale, SCALE_SIZE, -1);
-
- gtk_box_pack_start (GTK_BOX (bar->priv->scale_box),
- bar->priv->start_box,
- FALSE, FALSE, 0);
- gtk_box_pack_start (GTK_BOX (bar->priv->start_box),
- bar->priv->label,
- FALSE, FALSE, 0);
- gtk_box_pack_start (GTK_BOX (bar->priv->scale_box),
- bar->priv->scale,
- TRUE, TRUE, 0);
- gtk_box_pack_start (GTK_BOX (bar->priv->scale_box),
- bar->priv->end_box,
- FALSE, FALSE, 0);
-
- ca_gtk_widget_disable_sounds (bar->priv->scale, FALSE);
-
- gtk_widget_add_events (bar->priv->scale, GDK_SCROLL_MASK);
-
- g_signal_connect (G_OBJECT (bar->priv->scale),
- "scroll-event",
- G_CALLBACK (on_scale_scroll_event),
- bar);
-
- if (bar->priv->size_group != NULL) {
- gtk_size_group_add_widget (bar->priv->size_group,
- bar->priv->start_box);
-
- if (bar->priv->symmetric)
- gtk_size_group_add_widget (bar->priv->size_group,
- bar->priv->end_box);
- }
-
- gtk_scale_set_draw_value (GTK_SCALE (bar->priv->scale), FALSE);
-}
-
-static void
-update_scale_marks (GvcBalanceBar *bar)
-{
- gchar *str_lower = NULL,
- *str_upper = NULL;
- gdouble lower,
- upper;
-
- gtk_scale_clear_marks (GTK_SCALE (bar->priv->scale));
-
- switch (bar->priv->btype) {
- case BALANCE_TYPE_RL:
- str_lower = g_strdup_printf ("<small>%s</small>", C_("balance", "Left"));
- str_upper = g_strdup_printf ("<small>%s</small>", C_("balance", "Right"));
- break;
- case BALANCE_TYPE_FR:
- str_lower = g_strdup_printf ("<small>%s</small>", C_("balance", "Rear"));
- str_upper = g_strdup_printf ("<small>%s</small>", C_("balance", "Front"));
- break;
- case BALANCE_TYPE_LFE:
- str_lower = g_strdup_printf ("<small>%s</small>", C_("balance", "Minimum"));
- str_upper = g_strdup_printf ("<small>%s</small>", C_("balance", "Maximum"));
- break;
- }
-
- lower = gtk_adjustment_get_lower (bar->priv->adjustment);
- gtk_scale_add_mark (GTK_SCALE (bar->priv->scale),
- lower,
- GTK_POS_BOTTOM,
- str_lower);
- upper = gtk_adjustment_get_upper (bar->priv->adjustment);
- gtk_scale_add_mark (GTK_SCALE (bar->priv->scale),
- upper,
- GTK_POS_BOTTOM,
- str_upper);
- g_free (str_lower);
- g_free (str_upper);
-
- if (bar->priv->btype != BALANCE_TYPE_LFE)
- gtk_scale_add_mark (GTK_SCALE (bar->priv->scale),
- (upper - lower) / 2 + lower,
- GTK_POS_BOTTOM,
- NULL);
-}
-
-void
-gvc_balance_bar_set_size_group (GvcBalanceBar *bar,
- GtkSizeGroup *group,
- gboolean symmetric)
-{
- g_return_if_fail (GVC_IS_BALANCE_BAR (bar));
- g_return_if_fail (GTK_IS_SIZE_GROUP (group));
-
- bar->priv->size_group = group;
- bar->priv->symmetric = symmetric;
-
- if (bar->priv->size_group != NULL) {
- gtk_size_group_add_widget (bar->priv->size_group,
- bar->priv->start_box);
-
- if (bar->priv->symmetric)
- gtk_size_group_add_widget (bar->priv->size_group,
- bar->priv->end_box);
- }
- gtk_widget_queue_draw (GTK_WIDGET (bar));
-}
-
-static void
-update_balance_value (GvcBalanceBar *bar)
-{
- gdouble value = 0;
-
- switch (bar->priv->btype) {
- case BALANCE_TYPE_RL:
- value = mate_mixer_stream_control_get_balance (bar->priv->control);
- g_debug ("Balance value changed to %.2f", value);
- break;
- case BALANCE_TYPE_FR:
- value = mate_mixer_stream_control_get_fade (bar->priv->control);
- g_debug ("Fade value changed to %.2f", value);
- break;
- case BALANCE_TYPE_LFE:
- value = mate_mixer_stream_control_get_channel_volume (bar->priv->control,
- bar->priv->lfe_channel);
-
- g_debug ("Subwoofer volume changed to %.0f", value);
- break;
- }
-
- gtk_adjustment_set_value (bar->priv->adjustment, value);
-}
-
-static void
-on_balance_value_changed (MateMixerStream *stream,
- GParamSpec *pspec,
- GvcBalanceBar *bar)
-{
- update_balance_value (bar);
-}
-
-static gint
-find_stream_lfe_channel (MateMixerStreamControl *control)
-{
- guint i;
-
- for (i = 0; i < mate_mixer_stream_control_get_num_channels (control); i++) {
- MateMixerChannelPosition position;
-
- position = mate_mixer_stream_control_get_channel_position (control, i);
- if (position == MATE_MIXER_CHANNEL_LFE)
- return i;
- }
-
- return -1;
-}
-
-static void
-gvc_balance_bar_set_control (GvcBalanceBar *bar, MateMixerStreamControl *control)
-{
- g_return_if_fail (GVC_BALANCE_BAR (bar));
- g_return_if_fail (MATE_MIXER_IS_STREAM_CONTROL (control));
-
- if (bar->priv->control != NULL) {
- g_signal_handlers_disconnect_by_func (G_OBJECT (bar->priv->control),
- on_balance_value_changed,
- bar);
- g_object_unref (bar->priv->control);
- }
-
- bar->priv->control = g_object_ref (control);
-
- if (bar->priv->btype == BALANCE_TYPE_LFE) {
- gdouble minimum;
- gdouble maximum;
-
- minimum = mate_mixer_stream_control_get_min_volume (bar->priv->control);
- maximum = mate_mixer_stream_control_get_normal_volume (bar->priv->control);
-
- /* Configure the adjustment for the volume limits of the current
- * stream.
- * Only subwoofer scale uses volume, balance and fade use fixed
- * limits which do not need to be updated as balance type is
- * only set during construction. */
- gtk_adjustment_configure (GTK_ADJUSTMENT (bar->priv->adjustment),
- gtk_adjustment_get_value (bar->priv->adjustment),
- minimum,
- maximum,
- (maximum - minimum) / 100.0,
- (maximum - minimum) / 10.0,
- 0.0);
-
- bar->priv->lfe_channel = find_stream_lfe_channel (bar->priv->control);
-
- if (G_LIKELY (bar->priv->lfe_channel > -1))
- g_debug ("Found LFE channel at position %d", bar->priv->lfe_channel);
- else
- g_warn_if_reached ();
- } else
- bar->priv->lfe_channel = -1;
-
- switch (bar->priv->btype) {
- case BALANCE_TYPE_RL:
- g_signal_connect (G_OBJECT (bar->priv->control),
- "notify::balance",
- G_CALLBACK (on_balance_value_changed),
- bar);
- break;
- case BALANCE_TYPE_FR:
- g_signal_connect (G_OBJECT (bar->priv->control),
- "notify::fade",
- G_CALLBACK (on_balance_value_changed),
- bar);
- break;
- case BALANCE_TYPE_LFE:
- g_signal_connect (G_OBJECT (bar->priv->control),
- "notify::volume",
- G_CALLBACK (on_balance_value_changed),
- bar);
- break;
- }
-
- update_balance_value (bar);
- update_scale_marks (bar);
-
- g_object_notify_by_pspec (G_OBJECT (bar), properties[PROP_CONTROL]);
-}
-
-static void
-gvc_balance_bar_set_balance_type (GvcBalanceBar *bar, GvcBalanceType btype)
-{
- GtkWidget *frame;
- GtkAdjustment *adjustment;
-
- /* Create adjustment with limits for balance and fade types because
- * some limits must be provided.
- * If subwoofer type is used instead, the limits will be changed when
- * stream is set. */
- adjustment = GTK_ADJUSTMENT (gtk_adjustment_new (0.0, -1.0, 1.0, 0.05, 0.5, 0.0));
-
- bar->priv->btype = btype;
- bar->priv->adjustment = GTK_ADJUSTMENT (g_object_ref_sink (adjustment));
-
- g_signal_connect (G_OBJECT (adjustment),
- "value-changed",
- G_CALLBACK (on_adjustment_value_changed),
- bar);
-
- switch (btype) {
- case BALANCE_TYPE_RL:
- bar->priv->label = gtk_label_new_with_mnemonic (_("_Balance:"));
- break;
- case BALANCE_TYPE_FR:
- bar->priv->label = gtk_label_new_with_mnemonic (_("_Fade:"));
- break;
- case BALANCE_TYPE_LFE:
- bar->priv->label = gtk_label_new_with_mnemonic (_("_Subwoofer:"));
- break;
- }
-
- gtk_misc_set_alignment (GTK_MISC (bar->priv->label), 0.0, 0.0);
-
- /* Frame */
- frame = gtk_frame_new (NULL);
- gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_NONE);
- gtk_box_pack_start (GTK_BOX (bar), frame, TRUE, TRUE, 0);
-
- /* Box with scale */
- create_scale_box (bar);
- gtk_container_add (GTK_CONTAINER (frame), bar->priv->scale_box);
-
- gtk_label_set_mnemonic_widget (GTK_LABEL (bar->priv->label),
- bar->priv->scale);
-
- gtk_widget_set_direction (bar->priv->scale, GTK_TEXT_DIR_LTR);
- gtk_widget_show_all (frame);
-
- g_object_notify_by_pspec (G_OBJECT (bar), properties[PROP_BALANCE_TYPE]);
-}
-
-static void
-gvc_balance_bar_set_property (GObject *object,
- guint prop_id,
- const GValue *value,
- GParamSpec *pspec)
-{
- GvcBalanceBar *self = GVC_BALANCE_BAR (object);
-
- switch (prop_id) {
- case PROP_CONTROL:
- gvc_balance_bar_set_control (self, g_value_get_object (value));
- break;
- case PROP_BALANCE_TYPE:
- gvc_balance_bar_set_balance_type (self, g_value_get_int (value));
- break;
- default:
- G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
- break;
- }
-}
-
-static void
-gvc_balance_bar_get_property (GObject *object,
- guint prop_id,
- GValue *value,
- GParamSpec *pspec)
-{
- GvcBalanceBar *self = GVC_BALANCE_BAR (object);
-
- switch (prop_id) {
- case PROP_CONTROL:
- g_value_set_object (value, self->priv->control);
- break;
- default:
- G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
- break;
- }
-}
-
-static void
-gvc_balance_bar_class_init (GvcBalanceBarClass *klass)
-{
- GObjectClass *object_class = G_OBJECT_CLASS (klass);
-
- object_class->dispose = gvc_balance_bar_dispose;
- object_class->set_property = gvc_balance_bar_set_property;
- object_class->get_property = gvc_balance_bar_get_property;
-
- properties[PROP_CONTROL] =
- g_param_spec_object ("control",
- "Control",
- "MateMixer stream control",
- MATE_MIXER_TYPE_STREAM_CONTROL,
- G_PARAM_READWRITE |
- G_PARAM_STATIC_STRINGS);
-
- properties[PROP_BALANCE_TYPE] =
- g_param_spec_int ("balance-type",
- "balance type",
- "Whether the balance is right-left or front-rear",
- BALANCE_TYPE_RL,
- NUM_BALANCE_TYPES - 1,
- BALANCE_TYPE_RL,
- G_PARAM_READWRITE |
- G_PARAM_CONSTRUCT_ONLY |
- G_PARAM_STATIC_STRINGS);
-
- g_object_class_install_properties (object_class, N_PROPERTIES, properties);
-
- g_type_class_add_private (klass, sizeof (GvcBalanceBarPrivate));
-}
-
-static gboolean
-on_scale_scroll_event (GtkWidget *widget,
- GdkEventScroll *event,
- GvcBalanceBar *bar)
-{
- gdouble value;
- gdouble minimum;
- gdouble maximum;
- gdouble step;
-
- value = gtk_adjustment_get_value (bar->priv->adjustment);
- minimum = gtk_adjustment_get_lower (bar->priv->adjustment);
- maximum = gtk_adjustment_get_upper (bar->priv->adjustment);
-
- // XXX fix this for GTK3
-
- if (bar->priv->btype == BALANCE_TYPE_LFE)
- step = (maximum - minimum) / 100.0;
- else
- step = 0.05;
-
- if (event->direction == GDK_SCROLL_UP) {
- if (value + step > maximum)
- value = maximum;
- else
- value = value + step;
- } else if (event->direction == GDK_SCROLL_DOWN) {
- if (value - step < minimum)
- value = minimum;
- else
- value = value - step;
- }
-
- gtk_adjustment_set_value (bar->priv->adjustment, value);
- return TRUE;
-}
-
-static void
-on_adjustment_value_changed (GtkAdjustment *adjustment, GvcBalanceBar *bar)
-{
- gdouble value;
-
- if (bar->priv->control == NULL)
- return;
-
- value = gtk_adjustment_get_value (adjustment);
-
- switch (bar->priv->btype) {
- case BALANCE_TYPE_RL:
- mate_mixer_stream_control_set_balance (bar->priv->control, value);
- break;
- case BALANCE_TYPE_FR:
- mate_mixer_stream_control_set_fade (bar->priv->control, value);
- break;
- case BALANCE_TYPE_LFE:
- mate_mixer_stream_control_set_channel_volume (bar->priv->control,
- bar->priv->lfe_channel,
- value);
- break;
- }
-}
-
-static void
-gvc_balance_bar_init (GvcBalanceBar *bar)
-{
- bar->priv = GVC_BALANCE_BAR_GET_PRIVATE (bar);
-}
-
-static void
-gvc_balance_bar_dispose (GObject *object)
-{
- GvcBalanceBar *bar;
-
- bar = GVC_BALANCE_BAR (object);
-
- if (bar->priv->control != NULL) {
- g_signal_handlers_disconnect_by_func (G_OBJECT (bar->priv->control),
- on_balance_value_changed,
- bar);
- g_clear_object (&bar->priv->control);
- }
-
- G_OBJECT_CLASS (gvc_balance_bar_parent_class)->dispose (object);
-}
-
-GtkWidget *
-gvc_balance_bar_new (MateMixerStreamControl *control, GvcBalanceType btype)
-{
- return g_object_new (GVC_TYPE_BALANCE_BAR,
- "balance-type", btype,
- "control", control,
-#if GTK_CHECK_VERSION (3, 0, 0)
- "orientation", GTK_ORIENTATION_HORIZONTAL,
-#endif
- NULL);
-}