Panel
/* $Id$ */
/* Copyright (c) 2012-2020 Pierre Pronchery <khorben@defora.org> */
/* This file is part of DeforaOS Desktop Panel */
/* 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, version 3 of the License.
*
* 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, see <http://www.gnu.org/licenses/>. */
/* TODO:
* - factor code with the keyboard applet
* - move and resize when the root window (or size) changes
* - dlopen() mixer's binary by default */
#include <sys/wait.h>
#include <unistd.h>
#include <stdlib.h>
#ifdef DEBUG
# include <stdio.h>
#endif
#include <string.h>
#include <errno.h>
#include <libintl.h>
#include <gtk/gtk.h>
#include <gdk/gdkx.h>
#if GTK_CHECK_VERSION(3, 0, 0)
# include <gtk/gtkx.h>
#endif
#include <System.h>
#include "Panel/applet.h"
#define _(string) gettext(string)
#define N_(string) string
/* Mixer */
/* private */
/* types */
typedef struct _PanelApplet
{
PanelAppletHelper * helper;
GtkWidget * widget;
guint source;
GPid pid;
/* settings */
gint width;
gint height;
/* widgets */
GtkWidget * window;
GtkWidget * socket;
/* preferences */
GtkWidget * pr_box;
GtkWidget * pr_command;
GtkWidget * pr_width;
GtkWidget * pr_height;
GtkWidget * pr_ratio;
} Mixer;
/* prototypes */
/* plug-in */
static Mixer * _mixer_init(PanelAppletHelper * helper,
GtkWidget ** widget);
static void _mixer_destroy(Mixer * mixer);
static GtkWidget * _mixer_settings(Mixer * mixer, gboolean apply,
gboolean reset);
/* useful */
static int _mixer_spawn(Mixer * mixer, unsigned long * xid);
/* callbacks */
static void _mixer_on_child(GPid pid, gint status, gpointer data);
static gboolean _mixer_on_removed(void);
static void _mixer_on_toggled(GtkWidget * widget, gpointer data);
/* constants */
#define PANEL_MIXER_COMMAND_DEFAULT "mixer -x"
/* public */
/* variables */
PanelAppletDefinition applet =
{
N_("Mixer"),
"stock_volume",
NULL,
_mixer_init,
_mixer_destroy,
_mixer_settings,
FALSE,
TRUE
};
/* private */
/* functions */
/* mixer_init */
static void _init_size(Mixer * mixer, PanelAppletHelper * helper);
/* callbacks */
static gboolean _init_idle(gpointer data);
static Mixer * _mixer_init(PanelAppletHelper * helper,
GtkWidget ** widget)
{
Mixer * mixer;
GtkWidget * image;
if((mixer = malloc(sizeof(*mixer))) == NULL)
{
error_set("%s: %s", applet.name, strerror(errno));
return NULL;
}
mixer->helper = helper;
mixer->source = 0;
mixer->pid = -1;
mixer->width = -1;
mixer->height = -1;
mixer->window = NULL;
mixer->pr_box = NULL;
_init_size(mixer, helper);
mixer->widget = gtk_toggle_button_new();
#if GTK_CHECK_VERSION(2, 12, 0)
gtk_widget_set_tooltip_text(mixer->widget, _("Show mixer"));
#endif
gtk_button_set_relief(GTK_BUTTON(mixer->widget), GTK_RELIEF_NONE);
g_signal_connect(mixer->widget, "toggled", G_CALLBACK(
_mixer_on_toggled), mixer);
image = gtk_image_new_from_icon_name(applet.icon,
panel_window_get_icon_size(helper->window));
gtk_container_add(GTK_CONTAINER(mixer->widget), image);
gtk_widget_show_all(mixer->widget);
mixer->source = g_idle_add(_init_idle, mixer);
*widget = mixer->widget;
return mixer;
}
static void _init_size(Mixer * mixer, PanelAppletHelper * helper)
{
char const * p;
char * q;
long l;
if((p = helper->config_get(helper->panel, "mixer", "width")) != NULL
&& p[0] != '\0' && (l = strtol(p, &q, 0)) > 0
&& *q == '\0')
mixer->width = l;
if((p = helper->config_get(helper->panel, "mixer", "height")) != NULL
&& p[0] != '\0' && (l = strtol(p, &q, 0)) > 0
&& *q == '\0')
mixer->height = l;
if(mixer->width == -1 && mixer->height == -1)
{
mixer->width = 480;
mixer->height = 160;
}
else if(mixer->width == -1)
mixer->width = mixer->height * 3;
else if(mixer->height == -1)
mixer->height = mixer->width / 3;
#ifdef DEBUG
fprintf(stderr, "DEBUG: %s() width=%d height=%d\n", __func__,
mixer->width, mixer->height);
#endif
}
/* callbacks */
static gboolean _init_idle(gpointer data)
{
Mixer * mixer = data;
mixer->source = 0;
if(mixer->window != NULL)
return FALSE;
mixer->window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
gtk_window_set_accept_focus(GTK_WINDOW(mixer->window), FALSE);
#if GTK_CHECK_VERSION(2, 6, 0)
gtk_window_set_focus_on_map(GTK_WINDOW(mixer->window), FALSE);
#endif
/* XXX let this be configurable (resize applications automatically) */
gtk_window_set_type_hint(GTK_WINDOW(mixer->window),
GDK_WINDOW_TYPE_HINT_DOCK);
mixer->socket = gtk_socket_new();
gtk_widget_set_size_request(mixer->socket, mixer->width,
mixer->height);
g_signal_connect(mixer->socket, "plug-removed", G_CALLBACK(
_mixer_on_removed), NULL);
gtk_container_add(GTK_CONTAINER(mixer->window), mixer->socket);
gtk_widget_show(mixer->socket);
return FALSE;
}
/* mixer_destroy */
static void _mixer_destroy(Mixer * mixer)
{
if(mixer->source > 0)
g_source_remove(mixer->source);
if(mixer->pid > 0)
g_spawn_close_pid(mixer->pid);
gtk_widget_destroy(mixer->widget);
free(mixer);
}
/* mixer_settings */
static void _settings_apply(Mixer * mixer, PanelAppletHelper * helper);
static void _settings_reset(Mixer * mixer, PanelAppletHelper * helper);
static GtkWidget * _settings_widget(Mixer * mixer);
/* callbacks */
static void _settings_on_width_value_changed(gpointer data);
static void _settings_on_height_value_changed(gpointer data);
static GtkWidget * _mixer_settings(Mixer * mixer, gboolean apply,
gboolean reset)
{
PanelAppletHelper * helper = mixer->helper;
#ifdef DEBUG
fprintf(stderr, "DEBUG: %s(%p, %s, %s)\n", __func__, (void *)mixer,
apply ? "TRUE" : "FALSE", reset ? "TRUE" : "FALSE");
#endif
if(mixer->pr_box == NULL)
{
mixer->pr_box = _settings_widget(mixer);
reset = TRUE;
}
if(reset == TRUE)
_settings_reset(mixer, helper);
if(apply == TRUE)
_settings_apply(mixer, helper);
return mixer->pr_box;
}
static void _settings_apply(Mixer * mixer, PanelAppletHelper * helper)
{
char const * p;
char buf[16];
p = gtk_entry_get_text(GTK_ENTRY(mixer->pr_command));
helper->config_set(helper->panel, "mixer", "command", p);
mixer->width = gtk_spin_button_get_value_as_int(GTK_SPIN_BUTTON(
mixer->pr_width));
snprintf(buf, sizeof(buf), "%u", (unsigned)mixer->width);
helper->config_set(helper->panel, "mixer", "width", buf);
mixer->height = gtk_spin_button_get_value_as_int(GTK_SPIN_BUTTON(
mixer->pr_height));
snprintf(buf, sizeof(buf), "%u", (unsigned)mixer->height);
helper->config_set(helper->panel, "mixer", "height", buf);
gtk_widget_set_size_request(mixer->socket, mixer->width,
mixer->height);
}
static void _settings_reset(Mixer * mixer, PanelAppletHelper * helper)
{
char const * p;
gdouble value;
if((p = helper->config_get(helper->panel, "mixer", "command"))
== NULL)
p = PANEL_MIXER_COMMAND_DEFAULT;
gtk_entry_set_text(GTK_ENTRY(mixer->pr_command), p);
value = mixer->width;
gtk_spin_button_set_value(GTK_SPIN_BUTTON(mixer->pr_width), value);
value = mixer->height;
gtk_spin_button_set_value(GTK_SPIN_BUTTON(mixer->pr_height), value);
}
static GtkWidget * _settings_widget(Mixer * mixer)
{
GtkSizeGroup * group;
GtkWidget * vbox;
GtkWidget * hbox;
GtkWidget * vbox2;
GtkWidget * frame;
GtkWidget * widget;
group = gtk_size_group_new(GTK_SIZE_GROUP_HORIZONTAL);
#if GTK_CHECK_VERSION(3, 0, 0)
vbox = gtk_box_new(GTK_ORIENTATION_VERTICAL, 4);
hbox = gtk_box_new(GTK_ORIENTATION_HORIZONTAL, 4);
#else
vbox = gtk_vbox_new(FALSE, 4);
hbox = gtk_hbox_new(FALSE, 4);
#endif
widget = gtk_label_new(_("Command:"));
gtk_box_pack_start(GTK_BOX(hbox), widget, FALSE, TRUE, 0);
mixer->pr_command = gtk_entry_new();
gtk_box_pack_start(GTK_BOX(hbox), mixer->pr_command, TRUE, TRUE, 0);
gtk_box_pack_start(GTK_BOX(vbox), hbox, FALSE, TRUE, 0);
/* frame */
frame = gtk_frame_new(_("Size:"));
#if GTK_CHECK_VERSION(3, 0, 0)
vbox2 = gtk_box_new(GTK_ORIENTATION_VERTICAL, 4);
#else
vbox2 = gtk_vbox_new(FALSE, 4);
#endif
gtk_container_set_border_width(GTK_CONTAINER(vbox2), 4);
/* width */
#if GTK_CHECK_VERSION(3, 0, 0)
hbox = gtk_box_new(GTK_ORIENTATION_HORIZONTAL, 4);
#else
hbox = gtk_hbox_new(FALSE, 4);
#endif
widget = gtk_label_new(_("Width:"));
gtk_size_group_add_widget(group, widget);
gtk_box_pack_start(GTK_BOX(hbox), widget, FALSE, TRUE, 0);
mixer->pr_width = gtk_spin_button_new_with_range(1.0, 65535.0, 1.0);
gtk_spin_button_set_digits(GTK_SPIN_BUTTON(mixer->pr_width), 0);
g_signal_connect_swapped(mixer->pr_width, "value-changed",
G_CALLBACK(_settings_on_width_value_changed), mixer);
gtk_box_pack_start(GTK_BOX(hbox), mixer->pr_width, TRUE, TRUE, 0);
gtk_box_pack_start(GTK_BOX(vbox2), hbox, FALSE, TRUE, 0);
/* height */
#if GTK_CHECK_VERSION(3, 0, 0)
hbox = gtk_box_new(GTK_ORIENTATION_HORIZONTAL, 4);
#else
hbox = gtk_hbox_new(FALSE, 4);
#endif
widget = gtk_label_new(_("Height:"));
gtk_size_group_add_widget(group, widget);
gtk_box_pack_start(GTK_BOX(hbox), widget, FALSE, TRUE, 0);
mixer->pr_height = gtk_spin_button_new_with_range(1.0, 65535.0, 1.0);
gtk_spin_button_set_digits(GTK_SPIN_BUTTON(mixer->pr_height), 0);
g_signal_connect_swapped(mixer->pr_height, "value-changed",
G_CALLBACK(_settings_on_height_value_changed),
mixer);
gtk_box_pack_start(GTK_BOX(hbox), mixer->pr_height, TRUE, TRUE, 0);
gtk_box_pack_start(GTK_BOX(vbox2), hbox, FALSE, TRUE, 0);
/* ratio */
mixer->pr_ratio = gtk_check_button_new_with_label(_("Keep ratio"));
gtk_box_pack_start(GTK_BOX(vbox2), mixer->pr_ratio, FALSE, TRUE, 0);
gtk_container_add(GTK_CONTAINER(frame), vbox2);
gtk_box_pack_start(GTK_BOX(vbox), frame, FALSE, TRUE, 0);
gtk_widget_show_all(vbox);
return vbox;
}
/* callbacks */
static void _settings_on_width_value_changed(gpointer data)
{
Mixer * mixer = data;
gdouble value;
value = gtk_spin_button_get_value(GTK_SPIN_BUTTON(mixer->pr_width));
if(gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(mixer->pr_ratio)))
gtk_spin_button_set_value(GTK_SPIN_BUTTON(mixer->pr_height),
value / 3);
}
static void _settings_on_height_value_changed(gpointer data)
{
Mixer * mixer = data;
gdouble value;
value = gtk_spin_button_get_value(GTK_SPIN_BUTTON(mixer->pr_height));
if(gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(mixer->pr_ratio)))
gtk_spin_button_set_value(GTK_SPIN_BUTTON(mixer->pr_width),
value * 3);
}
/* useful */
/* mixer_spawn */
static int _mixer_spawn(Mixer * mixer, unsigned long * xid)
{
PanelAppletHelper * helper = mixer->helper;
char * argv[] = { "/bin/sh", "-c", PANEL_MIXER_COMMAND_DEFAULT, NULL };
const unsigned int flags = G_SPAWN_DO_NOT_REAP_CHILD;
char const * p;
char * q = NULL;
gboolean res;
gint out = -1;
GError * error = NULL;
char buf[32];
ssize_t size;
if((p = helper->config_get(helper->panel, "mixer", "command"))
!= NULL && (q = strdup(p)) != NULL)
argv[2] = q;
res = g_spawn_async_with_pipes(NULL, argv, NULL, flags, NULL, NULL,
&mixer->pid, NULL, &out, NULL, &error);
free(q);
if(res != TRUE)
{
helper->error(helper->panel, error->message, 1);
g_error_free(error);
return -1;
}
g_child_watch_add(mixer->pid, _mixer_on_child, mixer);
/* FIXME no longer use blocking I/O */
if((size = read(out, buf, sizeof(buf) - 1)) <= 0) /* XXX may block */
{
error_set("%s: %s: %s", applet.name, "read", strerror(errno));
return -helper->error(helper->panel, error_get(NULL), 1);
}
buf[size] = '\0';
if(sscanf(buf, "%lu", xid) != 1)
{
error_set("%s: %s", applet.name, _("Could not start mixer"));
return -helper->error(helper->panel, error_get(NULL), 1);
}
return 0;
}
/* callbacks */
/* mixer_on_child */
static gboolean _on_child_timeout(gpointer data);
static void _mixer_on_child(GPid pid, gint status, gpointer data)
{
const int timeout = 1000;
Mixer * mixer = data;
#ifdef DEBUG
fprintf(stderr, "DEBUG: %s(%u) %u\n", __func__, pid, mixer->pid);
#endif
if(mixer->source != 0 || mixer->pid != pid)
return;
if(WIFEXITED(status) || WIFSIGNALED(status))
{
g_spawn_close_pid(mixer->pid);
mixer->source = g_timeout_add(timeout, _on_child_timeout,
mixer);
}
}
static gboolean _on_child_timeout(gpointer data)
{
Mixer * mixer = data;
unsigned long xid;
mixer->source = 0;
if(_mixer_spawn(mixer, &xid) == 0)
gtk_socket_add_id(GTK_SOCKET(mixer->socket), xid);
return FALSE;
}
/* mixer_on_removed */
static gboolean _mixer_on_removed(void)
{
return TRUE;
}
/* mixer_on_toggled */
static void _mixer_on_toggled(GtkWidget * widget, gpointer data)
{
Mixer * mixer = data;
PanelAppletHelper * helper = mixer->helper;
gint x = 0;
gint y = 0;
gboolean push_in;
unsigned long xid;
if(mixer->window == NULL)
_init_idle(mixer);
if(mixer->window == NULL)
return;
helper->position_menu(helper->panel, (GtkMenu*)mixer->window, &x, &y,
&push_in);
gtk_window_move(GTK_WINDOW(mixer->window), x, y);
if(gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(widget)))
{
if(mixer->pid == -1)
{
_mixer_spawn(mixer, &xid);
gtk_socket_add_id(GTK_SOCKET(mixer->socket), xid);
}
gtk_widget_show(mixer->window);
}
else
gtk_widget_hide(mixer->window);
}