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/*
* libaudgui/equalizer.c
* Copyright 2010 John Lindgren
*
* This file is part of Audacious.
*
* Audacious 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, version 2 or version 3 of the License.
*
* Audacious 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
* Audacious. If not, see <http://www.gnu.org/licenses/>.
*
* The Audacious team does not consider modular code linking to Audacious or
* using our public API to be a derived work.
*/
/*
* Note: Because some GTK developer had the bright idea to put the minimum at
* the top of a GtkVScale and the maximum at the bottom, we have to reverse the
* sign of the values we get.
*/
#include <math.h>
#include <audacious/audconfig.h>
#include <audacious/i18n.h>
#include <libaudcore/hook.h>
#include "config.h"
#include "libaudgui-gtk.h"
typedef struct
{
GtkWidget * slider;
gfloat * setting;
}
SliderPair;
static void on_off_cb (GtkToggleButton * on_off, void * unused)
{
gboolean active = gtk_toggle_button_get_active (on_off);
if (aud_cfg->equalizer_active != active)
{
aud_cfg->equalizer_active = active;
hook_call ("equalizer changed", NULL);
}
}
static void on_off_update (void * unused, GtkWidget * on_off)
{
gboolean active = gtk_toggle_button_get_active ((GtkToggleButton *) on_off);
if (active != aud_cfg->equalizer_active)
gtk_toggle_button_set_active ((GtkToggleButton *) on_off,
aud_cfg->equalizer_active);
}
static GtkWidget * create_on_off (void)
{
GtkWidget * on_off;
on_off = gtk_check_button_new_with_mnemonic (_("_Enable"));
g_signal_connect ((GObject *) on_off, "toggled", (GCallback) on_off_cb, NULL);
hook_associate ("equalizer changed", (HookFunction) on_off_update, on_off);
on_off_update (NULL, on_off);
return on_off;
}
static void slider_cb (GtkRange * slider, gfloat * setting)
{
gint old = roundf (* setting);
gint new = round (-gtk_range_get_value (slider));
if (old != new)
{
* setting = new;
hook_call ("equalizer changed", NULL);
}
}
static void slider_update (void * unused, SliderPair * pair)
{
gint old = round (-gtk_range_get_value ((GtkRange *) pair->slider));
gint new = roundf (* pair->setting);
if (old != new)
gtk_range_set_value ((GtkRange *) pair->slider, -new);
}
static void set_slider_update (GtkWidget * slider, gfloat * setting)
{
SliderPair * pair = g_slice_new (SliderPair);
pair->slider = slider;
pair->setting = setting;
hook_associate ("equalizer changed", (HookFunction) slider_update, pair);
slider_update (NULL, pair);
}
static gchar * format_value (GtkScale * slider, gdouble value, void * unused)
{
return g_strdup_printf ("%d", (gint) -value);
}
static GtkWidget * create_slider (const gchar * name, gfloat * setting)
{
GtkWidget * vbox, * slider, * label;
vbox = gtk_vbox_new (FALSE, 6);
label = gtk_label_new (name);
gtk_label_set_angle ((GtkLabel *) label, 90);
gtk_box_pack_start ((GtkBox *) vbox, label, TRUE, FALSE, 0);
slider = gtk_vscale_new_with_range (-EQUALIZER_MAX_GAIN, EQUALIZER_MAX_GAIN,
1);
gtk_scale_set_draw_value ((GtkScale *) slider, TRUE);
gtk_scale_set_value_pos ((GtkScale *) slider, GTK_POS_BOTTOM);
gtk_widget_set_size_request (slider, -1, 120);
g_signal_connect ((GObject *) slider, "format-value", (GCallback)
format_value, NULL);
g_signal_connect ((GObject *) slider, "value-changed", (GCallback)
slider_cb, setting);
set_slider_update (slider, setting);
gtk_box_pack_start ((GtkBox *) vbox, slider, FALSE, FALSE, 0);
return vbox;
}
static GtkWidget * create_window (void)
{
const gchar * const names[AUD_EQUALIZER_NBANDS] = {N_("31 Hz"), N_("63 Hz"),
N_("125 Hz"), N_("250 Hz"), N_("500 Hz"), N_("1 kHz"), N_("2 kHz"),
N_("4 kHz"), N_("8 kHz"), N_("16 kHz")};
GtkWidget * window, * vbox, * hbox;
gint i;
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_window_set_title ((GtkWindow *) window, _("Equalizer"));
gtk_window_set_type_hint ((GtkWindow *) window, GDK_WINDOW_TYPE_HINT_DIALOG);
gtk_window_set_resizable ((GtkWindow *) window, FALSE);
gtk_container_set_border_width ((GtkContainer *) window, 6);
g_signal_connect ((GObject *) window, "delete-event", (GCallback)
gtk_widget_hide_on_delete, NULL);
audgui_hide_on_escape (window);
vbox = gtk_vbox_new (FALSE, 6);
gtk_container_add ((GtkContainer *) window, vbox);
gtk_box_pack_start ((GtkBox *) vbox, create_on_off (), FALSE, FALSE, 0);
hbox = gtk_hbox_new (FALSE, 6);
gtk_box_pack_start ((GtkBox *) vbox, hbox, FALSE, FALSE, 0);
gtk_box_pack_start ((GtkBox *) hbox, create_slider (_("Preamp"),
& aud_cfg->equalizer_preamp), FALSE, FALSE, 0);
gtk_box_pack_start ((GtkBox *) hbox, gtk_vseparator_new (), FALSE, FALSE, 0);
for (i = 0; i < AUD_EQUALIZER_NBANDS; i ++)
gtk_box_pack_start ((GtkBox *) hbox, create_slider (_(names[i]),
& aud_cfg->equalizer_bands[i]), FALSE, FALSE, 0);
gtk_widget_show_all (vbox);
return window;
}
static GtkWidget * equalizer_window = NULL;
void audgui_show_equalizer_window (void)
{
if (equalizer_window == NULL)
equalizer_window = create_window ();
gtk_window_present ((GtkWindow *) equalizer_window);
}
void audgui_hide_equalizer_window (void)
{
if (equalizer_window != NULL)
gtk_widget_hide (equalizer_window);
}
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