Desktop
/* $Id: panel.c,v 1.65 2010/05/06 14:44:22 khorben Exp $ */
/* Copyright (c) 2010 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/>. */
#include <System.h>
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <libintl.h>
#include <gtk/gtk.h>
#include "Panel.h"
#include "common.h"
#include "../config.h"
#define _(string) gettext(string)
/* Panel */
/* private */
/* types */
struct _Panel
{
Config * config;
PanelPosition position;
gint height;
gint icon_width;
gint icon_height;
PanelAppletHelper helper;
GtkWidget * window;
GtkWidget * hbox;
GdkWindow * root;
gint root_width; /* width of the root window */
gint root_height; /* height of the root window */
};
/* constants */
#ifndef PREFIX
# define PREFIX "/usr/local"
#endif
#ifndef LIBDIR
# define LIBDIR PREFIX "/lib"
#endif
#define PANEL_CONFIG_FILE ".panel"
/* prototypes */
/* helpers */
static char const * _panel_helper_config_get(void * priv, char const * section,
char const * variable);
static int _panel_helper_error(void * priv, char const * message, int ret);
#ifndef EMBEDDED
static int _panel_helper_logout_dialog(void);
#endif
static void _panel_helper_position_menu(GtkMenu * menu, gint * x, gint * y,
gboolean * push_in, gpointer data);
static int _panel_helper_shutdown_dialog(void);
/* public */
/* panel_new */
static int _new_config(Panel * panel);
static gboolean _on_idle(gpointer data);
static gboolean _idle_load(Panel * panel, char const * plugins);
static gboolean _on_closex(void);
Panel * panel_new(PanelPrefs * prefs)
{
Panel * panel;
GdkScreen * screen;
int monitor;
GdkRectangle rect;
if((panel = malloc(sizeof(*panel))) == NULL)
{
panel_error(NULL, "malloc", 1);
return NULL;
}
if(_new_config(panel) != 0)
{
/* FIXME visually warn the user */
panel_delete(panel);
return NULL;
}
panel->position = prefs->position;
panel->icon_width = 48;
panel->icon_height = 48;
if(prefs->iconsize != PANEL_ICON_SIZE_SMALL
&& prefs->iconsize != PANEL_ICON_SIZE_SMALLER)
prefs->iconsize = PANEL_ICON_SIZE_LARGE;
if(gtk_icon_size_lookup(prefs->iconsize, &panel->icon_width,
&panel->icon_height) != TRUE)
error_set_print(PACKAGE, 0, "Invalid panel size");
panel->helper.priv = panel;
panel->helper.config_get = _panel_helper_config_get;
panel->helper.error = _panel_helper_error;
panel->helper.icon_size = prefs->iconsize;
#ifndef EMBEDDED
panel->helper.logout_dialog = _panel_helper_logout_dialog;
#else
panel->helper.logout_dialog = NULL;
#endif
panel->helper.position_menu = _panel_helper_position_menu;
panel->helper.shutdown_dialog = _panel_helper_shutdown_dialog;
/* root window */
screen = gdk_screen_get_default();
panel->root = gdk_screen_get_root_window(screen);
if(prefs != NULL && prefs->monitor > 0
&& prefs->monitor < gdk_screen_get_n_monitors(screen))
monitor = prefs->monitor;
else
monitor = 0;
gdk_screen_get_monitor_geometry(screen, monitor, &rect);
panel->root_width = rect.width;
panel->root_height = rect.height;
#ifdef DEBUG
fprintf(stderr, "DEBUG: %s() width=%d height=%d\n", __func__,
panel->root_width, panel->root_height);
#endif
/* panel */
g_idle_add(_on_idle, panel);
panel->window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
panel->height = panel->icon_height + (PANEL_BORDER_WIDTH * 4);
#ifdef DEBUG
fprintf(stderr, "DEBUG: %s() height=%d\n", __func__, panel->height);
#endif
gtk_window_resize(GTK_WINDOW(panel->window), panel->root_width,
panel->height);
gtk_window_set_type_hint(GTK_WINDOW(panel->window),
GDK_WINDOW_TYPE_HINT_DOCK);
if(prefs->position == PANEL_POSITION_TOP)
gtk_window_move(GTK_WINDOW(panel->window), rect.x, 0);
else
gtk_window_move(GTK_WINDOW(panel->window), rect.x,
rect.y + panel->root_height - panel->height);
gtk_window_stick(GTK_WINDOW(panel->window));
g_signal_connect(G_OBJECT(panel->window), "delete-event", G_CALLBACK(
_on_closex), panel);
panel->hbox = gtk_hbox_new(FALSE, 2);
gtk_container_add(GTK_CONTAINER(panel->window), panel->hbox);
gtk_container_set_border_width(GTK_CONTAINER(panel->window), 4);
gtk_widget_show_all(panel->window);
return panel;
}
static int _new_config(Panel * panel)
{
char const * homedir;
size_t len;
char * filename;
if((panel->config = config_new()) == NULL)
return 1;
if((homedir = getenv("HOME")) == NULL)
homedir = g_get_home_dir();
len = strlen(homedir) + 1 + sizeof(PANEL_CONFIG_FILE);
if((filename = malloc(len)) == NULL)
return 1;
snprintf(filename, len, "%s/%s", homedir, PANEL_CONFIG_FILE);
config_load(panel->config, filename); /* we can ignore errors */
free(filename);
return 0;
}
static gboolean _on_idle(gpointer data)
{
Panel * panel = data;
#ifndef EMBEDDED
const char * plugins[] = { "volume", "systray", "battery", "bluetooth",
"clock", "swap", "memory", "cpufreq", "cpu", "desktop", "gps",
"gsm", "lock", "logout", "main", "pager", "tasks", NULL };
#else
const char * plugins[] = { "volume", "systray", "battery", "bluetooth",
"clock", "cpufreq", "gps", "gsm", "main", "pager", "tasks",
NULL };
#endif
char const * p;
size_t i;
p = config_get(panel->config, NULL, (panel->position
== PANEL_POSITION_TOP) ? "top" : "bottom");
if(p != NULL || (p = config_get(panel->config, NULL, "plugins"))
!= NULL)
return _idle_load(panel, p);
for(i = 0; plugins[i] != NULL; i++)
if(panel_load(panel, plugins[i]) != 0)
error_print(PACKAGE); /* we can ignore errors */
return FALSE;
}
static gboolean _idle_load(Panel * panel, char const * plugins)
{
char * p;
char * q;
size_t i;
if((p = strdup(plugins)) == NULL)
return panel_error(panel, "strdup", FALSE);
for(q = p, i = 0;;)
{
if(q[i] == '\0')
{
if(panel_load(panel, q) != 0)
error_print(PACKAGE); /* we can ignore errors */
break;
}
if(q[i++] != ',')
continue;
q[i - 1] = '\0';
if(panel_load(panel, q) != 0)
error_print(PACKAGE); /* we can ignore errors */
q += i;
i = 0;
}
free(p);
return FALSE;
}
static gboolean _on_closex(void)
{
/* ignore delete events */
return TRUE;
}
/* panel_delete */
void panel_delete(Panel * panel)
{
/* FIXME destroy plugins as well */
if(panel->config != NULL)
config_delete(panel->config);
free(panel);
}
/* useful */
int panel_error(Panel * panel, char const * message, int ret)
{
GtkWidget * dialog;
dialog = gtk_message_dialog_new(NULL, 0, GTK_MESSAGE_ERROR,
GTK_BUTTONS_CLOSE, "%s: %s", message, strerror(errno));
gtk_window_set_title(GTK_WINDOW(dialog), "Error");
gtk_dialog_run(GTK_DIALOG(dialog));
gtk_widget_destroy(dialog);
return ret;
}
/* panel_load */
int panel_load(Panel * panel, char const * applet)
{
Plugin * plugin;
PanelApplet * pa;
GtkWidget * widget;
gboolean exp;
gboolean fill;
if((plugin = plugin_new(LIBDIR, PACKAGE, "applets", applet)) == NULL)
return -1;
if((pa = plugin_lookup(plugin, "applet")) == NULL
|| (pa->helper = &panel->helper) == NULL
|| pa->init == NULL || (widget = pa->init(pa)) == NULL)
{
plugin_delete(plugin);
return -1;
}
exp = pa->expand;
fill = pa->fill;
switch(pa->position)
{
case PANEL_APPLET_POSITION_END:
gtk_box_pack_end(GTK_BOX(panel->hbox), widget, exp,
fill, 0);
break;
case PANEL_APPLET_POSITION_FIRST:
gtk_box_pack_start(GTK_BOX(panel->hbox), widget, exp,
fill, 0);
gtk_box_reorder_child(GTK_BOX(panel->hbox), widget, 0);
break;
case PANEL_APPLET_POSITION_LAST:
gtk_box_pack_end(GTK_BOX(panel->hbox), widget, exp,
fill, 0);
gtk_box_reorder_child(GTK_BOX(panel->hbox), widget, 0);
break;
case PANEL_APPLET_POSITION_START:
gtk_box_pack_start(GTK_BOX(panel->hbox), widget, exp,
fill, 0);
break;
}
return 0;
}
/* private */
/* functions */
/* helpers */
/* panel_helper_config_get */
static char const * _panel_helper_config_get(void * priv, char const * section,
char const * variable)
{
Panel * panel = priv;
return config_get(panel->config, section, variable);
}
/* panel_helper_error */
static int _error_text(char const * message, int ret);
static int _panel_helper_error(void * priv, char const * message, int ret)
{
Panel * panel = priv;
if(priv == NULL)
return _error_text(message, ret);
return panel_error(panel, message, ret);
}
static int _error_text(char const * message, int ret)
{
fputs(PACKAGE ": ", stderr);
perror(message);
return ret;
}
#ifndef EMBEDDED
/* panel_helper_logout_dialog */
static int _panel_helper_logout_dialog(void)
{
GtkWidget * dialog;
const char * message = _("This will log you out of the current session,"
" therefore closing any application currently opened"
" and losing any unsaved data.\n"
"Do you really want to proceed?");
GtkWidget * widget;
int res;
dialog = gtk_message_dialog_new(NULL, 0, GTK_MESSAGE_INFO,
GTK_BUTTONS_NONE, "%s", _("Logout"));
gtk_message_dialog_format_secondary_text(GTK_MESSAGE_DIALOG(dialog),
"%s", message);
gtk_dialog_add_buttons(GTK_DIALOG(dialog), GTK_STOCK_CANCEL,
GTK_RESPONSE_CANCEL, NULL);
widget = gtk_button_new_with_label(_("Logout"));
gtk_button_set_image(GTK_BUTTON(widget), gtk_image_new_from_icon_name(
"gnome-logout", GTK_ICON_SIZE_BUTTON));
gtk_widget_show_all(widget);
gtk_dialog_add_action_widget(GTK_DIALOG(dialog), widget,
GTK_RESPONSE_ACCEPT);
gtk_window_set_keep_above(GTK_WINDOW(dialog), TRUE);
gtk_window_set_position(GTK_WINDOW(dialog), GTK_WIN_POS_CENTER_ALWAYS);
gtk_window_set_title(GTK_WINDOW(dialog), _("Logout"));
res = gtk_dialog_run(GTK_DIALOG(dialog));
gtk_widget_destroy(dialog);
if(res != GTK_RESPONSE_ACCEPT)
return 1;
gtk_main_quit();
return 0;
}
#endif
/* panel_helper_position_menu */
static void _panel_helper_position_menu(GtkMenu * menu, gint * x, gint * y,
gboolean * push_in, gpointer data)
{
Panel * panel = data;
GtkRequisition req;
gtk_widget_size_request(GTK_WIDGET(menu), &req);
#ifdef DEBUG
fprintf(stderr, "DEBUG: %s() width=%d, height=%d\n", __func__,
req.width, req.height);
#endif
if(req.height <= 0)
return;
*x = (req.width < panel->root_width - PANEL_BORDER_WIDTH)
? PANEL_BORDER_WIDTH : 0;
if(panel->position == PANEL_POSITION_TOP)
*y = panel->height;
else
*y = panel->root_height - panel->height - req.height;
*push_in = TRUE;
}
/* panel_helper_shutdown_dialog */
static int _panel_helper_shutdown_dialog(void)
{
GtkWidget * dialog;
GtkWidget * widget;
const char * message = _("This will shutdown your computer,"
" therefore closing any application currently opened"
" and losing any unsaved data.\n"
"Do you really want to proceed?");
enum { RES_CANCEL, RES_REBOOT, RES_SHUTDOWN };
int res;
char * reboot[] = { "/sbin/shutdown", "shutdown", "-r", "now", NULL };
char * shutdown[] = { "/sbin/shutdown", "shutdown",
#ifdef __NetBSD__
"-p",
#else
"-h",
#endif
"now", NULL };
dialog = gtk_message_dialog_new(NULL, 0, GTK_MESSAGE_INFO,
GTK_BUTTONS_NONE, "%s", _("Shutdown"));
gtk_message_dialog_format_secondary_text(GTK_MESSAGE_DIALOG(dialog),
"%s", message);
gtk_dialog_add_buttons(GTK_DIALOG(dialog), GTK_STOCK_CANCEL, RES_CANCEL,
_("Restart"), RES_REBOOT, NULL);
widget = gtk_button_new_with_label(_("Shutdown"));
gtk_button_set_image(GTK_BUTTON(widget), gtk_image_new_from_icon_name(
"gnome-shutdown", GTK_ICON_SIZE_BUTTON));
gtk_widget_show_all(widget);
gtk_dialog_add_action_widget(GTK_DIALOG(dialog), widget, RES_SHUTDOWN);
gtk_window_set_keep_above(GTK_WINDOW(dialog), TRUE);
gtk_window_set_position(GTK_WINDOW(dialog), GTK_WIN_POS_CENTER_ALWAYS);
gtk_window_set_title(GTK_WINDOW(dialog), _("Shutdown"));
res = gtk_dialog_run(GTK_DIALOG(dialog));
gtk_widget_destroy(dialog);
if(res == RES_SHUTDOWN)
g_spawn_async(NULL, shutdown, NULL, G_SPAWN_FILE_AND_ARGV_ZERO,
NULL, NULL, NULL, NULL);
else if(res == RES_REBOOT)
g_spawn_async(NULL, reboot, NULL, G_SPAWN_FILE_AND_ARGV_ZERO,
NULL, NULL, NULL, NULL);
else
return 1;
return 0;
}