Mixer
/* $Id$ */
/* Copyright (c) 2017-2018 Pierre Pronchery <khorben@defora.org> */
/* This file is part of DeforaOS Desktop Mixer */
/* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
#include <stdlib.h>
#include <System/object.h>
#include <Desktop.h>
#include "Mixer/control.h"
/* MixerControlRadio */
/* private */
/* types */
typedef struct _MixerControlRadio
{
MixerControlPlugin * plugin;
unsigned int value;
GtkWidget * widget;
} MixerControlRadio;
struct _MixerControlPlugin
{
MixerControlPluginHelper * helper;
GtkWidget * widget;
GSList * group;
MixerControlRadio * radios;
size_t radios_cnt;
};
/* prototypes */
/* control */
static MixerControlPlugin * _radio_init(MixerControlPluginHelper * helper,
String const * type, va_list properties);
static void _radio_destroy(MixerControlPlugin * radio);
static int _radio_get(MixerControlPlugin * radio, va_list properties);
static String const * _radio_get_type(MixerControlPlugin * radio);
static GtkWidget * _radio_get_widget(MixerControlPlugin * radio);
static int _radio_set(MixerControlPlugin * radio, va_list properties);
/* callbacks */
static void _radio_on_toggled(gpointer data);
/* public */
/* variables */
MixerControlDefinition control =
{
NULL,
"Radio buttons",
NULL,
_radio_init,
_radio_destroy,
_radio_get,
_radio_get_type,
_radio_get_widget,
_radio_set
};
/* private */
/* functions */
/* radio_init */
static MixerControlPlugin * _radio_init(MixerControlPluginHelper * helper,
String const * type, va_list properties)
{
MixerControlPlugin * radio;
(void) type;
if((radio = object_new(sizeof(*radio))) == NULL)
return NULL;
radio->helper = helper;
radio->widget = gtk_button_box_new(GTK_ORIENTATION_VERTICAL);
gtk_button_box_set_layout(GTK_BUTTON_BOX(radio->widget),
GTK_BUTTONBOX_SPREAD);
gtk_container_set_border_width(GTK_CONTAINER(radio->widget), 4);
radio->group = NULL;
radio->radios = NULL;
radio->radios_cnt = 0;
if(_radio_set(radio, properties) != 0)
{
_radio_destroy(radio);
return NULL;
}
return radio;
}
/* radio_destroy */
static void _radio_destroy(MixerControlPlugin * radio)
{
free(radio->radios);
object_delete(radio);
}
/* accessors */
/* radio_get */
static unsigned int _get_value(MixerControlPlugin * radio);
static int _radio_get(MixerControlPlugin * radio, va_list properties)
{
String const * p;
unsigned int * u;
while((p = va_arg(properties, String const *)) != NULL)
if(string_compare(p, "value") == 0)
{
u = va_arg(properties, unsigned int *);
*u = _get_value(radio);
}
else
/* FIXME implement the rest */
return -1;
return 0;
}
static unsigned int _get_value(MixerControlPlugin * radio)
{
size_t i;
for(i = 0; i < radio->radios_cnt; i++)
if(gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(
radio->radios[i].widget)))
return radio->radios[i].value;
return 0;
}
/* radio_get_type */
static String const * _radio_get_type(MixerControlPlugin * radio)
{
(void) radio;
return "radio";
}
/* radio_get_widget */
static GtkWidget * _radio_get_widget(MixerControlPlugin * radio)
{
return radio->widget;
}
/* radio_set */
static int _set_label(MixerControlPlugin * radio, unsigned int pos,
String const * label);
static int _set_members(MixerControlPlugin * radio, unsigned int cnt);
static int _set_value(MixerControlPlugin * radio, unsigned int value);
static int _set_value_pos(MixerControlPlugin * radio, unsigned int pos,
unsigned int value);
static int _radio_set(MixerControlPlugin * radio, va_list properties)
{
String const * p;
String const * s;
unsigned int u;
unsigned int value;
while((p = va_arg(properties, String const *)) != NULL)
{
if(sscanf(p, "label%u", &u) == 1)
{
s = va_arg(properties, String const *);
if(_set_label(radio, u, s) != 0)
return -1;
}
else if(string_compare(p, "members") == 0)
{
u = va_arg(properties, unsigned int);
if(_set_members(radio, u) != 0)
return -1;
}
else if(string_compare(p, "value") == 0)
{
value = va_arg(properties, unsigned int);
if(_set_value(radio, value) != 0)
return -1;
}
else if(sscanf(p, "value%u", &u) == 1)
{
value = va_arg(properties, unsigned int);
if(_set_value_pos(radio, u, value) != 0)
return -1;
}
else
/* FIXME report the error */
return -1;
}
return 0;
}
static int _set_label(MixerControlPlugin * radio, unsigned int pos,
String const * label)
{
if(pos >= radio->radios_cnt)
return -1;
gtk_button_set_label(GTK_BUTTON(radio->radios[pos].widget), label);
return 0;
}
static int _set_members(MixerControlPlugin * radio, unsigned int cnt)
{
size_t i;
MixerControlRadio * p;
/* delete buttons as required */
if(radio->radios_cnt >= cnt)
{
for(i = cnt; i < radio->radios_cnt; i++)
g_object_unref(radio->radios[i].widget);
radio->radios_cnt = cnt;
return 0;
}
if((p = realloc(radio->radios, sizeof(*p) * cnt)) == NULL)
return -1;
radio->radios = p;
for(i = radio->radios_cnt; i < cnt; i++)
{
p = &radio->radios[i];
p->plugin = radio;
p->value = 0;
p->widget = gtk_radio_button_new(radio->group);
gtk_widget_set_sensitive(p->widget, FALSE);
if(radio->group == NULL)
radio->group = gtk_radio_button_get_group(
GTK_RADIO_BUTTON(p->widget));
g_signal_connect_swapped(p->widget, "toggled", G_CALLBACK(
_radio_on_toggled), radio);
gtk_container_add(GTK_CONTAINER(radio->widget), p->widget);
}
radio->radios_cnt = cnt;
gtk_widget_show_all(radio->widget);
return 0;
}
static int _set_value(MixerControlPlugin * radio, unsigned int value)
{
size_t i;
for(i = 0; i < radio->radios_cnt; i++)
if(radio->radios[i].value == value)
{
gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(
radio->radios[i].widget),
TRUE);
return 0;
}
return -1;
}
static int _set_value_pos(MixerControlPlugin * radio, unsigned int pos,
unsigned int value)
{
if(pos >= radio->radios_cnt)
return -1;
radio->radios[pos].value = value;
gtk_widget_set_sensitive(radio->radios[pos].widget, (value != 0)
? TRUE : FALSE);
return 0;
}
/* callbacks */
/* radio_on_toggled */
static void _radio_on_toggled(gpointer data)
{
MixerControlPlugin * radio = data;
radio->helper->mixercontrol_set(radio->helper->control);
}