Desktop
/* $Id: panel.c,v 1.39 2009/12/09 22:38:01 khorben Exp $ */
/* Copyright (c) 2009 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 <gtk/gtk.h>
#include "Panel.h"
#include "common.h"
#include "../config.h"
/* Panel */
/* private */
/* types */
struct _Panel
{
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
/* prototypes */
/* helpers */
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 gboolean _on_idle(gpointer data);
static gboolean _on_button_press(GtkWidget * widget, GdkEventButton * event,
gpointer data);
static gboolean _on_closex(GtkWidget * widget, GdkEvent * event, gpointer data);
Panel * panel_new(void)
{
Panel * panel;
GdkScreen * screen;
GtkWidget * event;
GdkRectangle rect;
if((panel = malloc(sizeof(*panel))) == NULL)
{
/* FIXME visually warn the user */
panel_error(NULL, "malloc", 1);
return NULL;
}
panel->icon_width = 48;
panel->icon_height = 48;
gtk_icon_size_lookup(GTK_ICON_SIZE_LARGE_TOOLBAR, &panel->icon_width,
&panel->icon_height);
panel->helper.priv = panel;
panel->helper.error = _panel_helper_error;
panel->helper.icon_size = PANEL_ICON_SIZE;
#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 */
panel->root = gdk_screen_get_root_window(gdk_screen_get_default());
screen = gdk_screen_get_default();
gdk_screen_get_monitor_geometry(screen, 0, &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);
rect.height = panel->icon_height + (PANEL_BORDER_WIDTH * 8);
#ifdef DEBUG
fprintf(stderr, "DEBUG: %s() height=%d\n", __func__, rect.height);
#endif
gtk_window_resize(GTK_WINDOW(panel->window), panel->root_width,
rect.height);
gtk_window_set_type_hint(GTK_WINDOW(panel->window),
GDK_WINDOW_TYPE_HINT_DOCK);
gtk_window_move(GTK_WINDOW(panel->window), 0, panel->root_height
- rect.height);
gtk_window_stick(GTK_WINDOW(panel->window));
g_signal_connect(G_OBJECT(panel->window), "delete-event", G_CALLBACK(
_on_closex), panel);
event = gtk_event_box_new();
g_signal_connect(G_OBJECT(event), "button-press-event", G_CALLBACK(
_on_button_press), panel);
panel->hbox = gtk_hbox_new(FALSE, 2);
gtk_container_add(GTK_CONTAINER(event), panel->hbox);
gtk_container_add(GTK_CONTAINER(panel->window), event);
gtk_container_set_border_width(GTK_CONTAINER(panel->window), 4);
gtk_widget_show_all(panel->window);
return panel;
}
static gboolean _on_idle(gpointer data)
{
Panel * panel = data;
/* FIXME load all plugins, a configuration file or ask the user */
#ifndef EMBEDDED
const char * plugins[] = { "battery", "clock", "cpu", "desktop", "lock",
"logout", "main", "memory", "pager", "tasks", "volume", NULL };
#else
const char * plugins[] = { "clock", "desktop", "main", "tasks", "volume",
NULL };
#endif
size_t i;
for(i = 0; plugins[i] != NULL; i++)
if(panel_load(panel, plugins[i]))
error_print(PACKAGE); /* we can ignore errors */
return FALSE;
}
static gboolean _on_button_press(GtkWidget * widget, GdkEventButton * event,
gpointer data)
{
GtkWidget * menu;
GtkWidget * menuitem;
#ifdef DEBUG
fprintf(stderr, "DEBUG: %s()\n", __func__);
#endif
if(event->type != GDK_BUTTON_PRESS || event->button != 3)
return TRUE;
#ifdef DEBUG
fprintf(stderr, "DEBUG: %s() right-click\n", __func__);
#endif
menu = gtk_menu_new();
menuitem = gtk_image_menu_item_new_from_stock(GTK_STOCK_PROPERTIES,
NULL);
gtk_menu_shell_append(GTK_MENU_SHELL(menu), menuitem);
gtk_widget_show_all(menu);
gtk_menu_popup(GTK_MENU(menu), NULL, NULL, NULL, data, event->button,
event->time);
return FALSE;
}
static gboolean _on_closex(GtkWidget * widget, GdkEvent * event, gpointer data)
{
return TRUE;
}
/* panel_delete */
void panel_delete(Panel * panel)
{
/* FIXME destroy plugins */
free(panel);
}
/* useful */
static int _error_text(char const * message, int ret);
int panel_error(Panel * panel, char const * message, int ret)
{
GtkWidget * dialog;
if(panel == NULL)
return _error_text(message, ret);
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");
g_signal_connect(G_OBJECT(dialog), "response", G_CALLBACK(
gtk_widget_destroy), NULL);
gtk_widget_show(dialog);
return ret;
}
static int _error_text(char const * message, int ret)
{
fputs("panel: ", stderr);
perror(message);
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, 2);
break;
case PANEL_APPLET_POSITION_FIRST:
gtk_box_pack_start(GTK_BOX(panel->hbox), widget, exp,
fill, 2);
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, 2);
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, 2);
break;
}
gtk_widget_show_all(widget);
return 0;
}
/* private */
/* functions */
/* helpers */
/* panel_helper_error */
static int _panel_helper_error(void * priv, char const * message, int ret)
{
Panel * panel = priv;
return panel_error(panel, message, 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.\nDo you really want to proceed?";
GtkWidget * widget;
int res;
dialog = gtk_message_dialog_new(NULL, 0, GTK_MESSAGE_WARNING,
GTK_BUTTONS_NONE, "%s", "Warning");
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), "Warning");
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 = PANEL_BORDER_WIDTH;
*y = panel->root_height - (PANEL_BORDER_WIDTH * 8) - panel->icon_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.\nDo 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_WARNING,
GTK_BUTTONS_NONE, "%s", "Warning");
gtk_message_dialog_format_secondary_text(GTK_MESSAGE_DIALOG(dialog),
"%s", message);
gtk_dialog_add_buttons(GTK_DIALOG(dialog), GTK_STOCK_CANCEL, RES_CANCEL,
"Reboot", 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), "Warning");
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;
}