Desktop
/* $Id: keyboard.c,v 1.18 2011/10/29 12:49:08 khorben Exp $ */
/* Copyright (c) 2011 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:
* - move and resize when the root window (or size) changes
* - track if child process ever dies
* - write own keyboard implementation (dlopen keyboard's binary) */
#include <unistd.h>
#include <stdlib.h>
#ifdef DEBUG
# include <stdio.h>
#endif
#include <string.h>
#include <errno.h>
#include <libintl.h>
#include <gdk/gdkx.h>
#include "Panel.h"
#define _(string) gettext(string)
/* Keyboard */
/* private */
/* types */
typedef struct _Keyboard
{
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;
} Keyboard;
/* prototypes */
static GtkWidget * _keyboard_init(PanelApplet * applet);
static void _keyboard_destroy(PanelApplet * applet);
static GtkWidget * _keyboard_settings(PanelApplet * applet, gboolean apply,
gboolean reset);
/* callbacks */
static void _on_keyboard_toggled(GtkWidget * widget, gpointer data);
/* constants */
#define PANEL_KEYBOARD_COMMAND_DEFAULT "keyboard -x"
/* public */
/* variables */
PanelApplet applet =
{
NULL,
"Keyboard",
"input-keyboard",
_keyboard_init,
_keyboard_destroy,
_keyboard_settings,
FALSE,
TRUE,
NULL
};
/* private */
/* functions */
/* keyboard_init */
static void _init_size(Keyboard * keyboard, PanelAppletHelper * helper);
/* callbacks */
static gboolean _init_idle(gpointer data);
static int _idle_child(Keyboard * keyboard, PanelAppletHelper * helper,
unsigned long * xid);
static GtkWidget * _keyboard_init(PanelApplet * applet)
{
PanelAppletHelper * helper = applet->helper;
Keyboard * keyboard;
GtkWidget * ret;
GtkWidget * image;
if((keyboard = malloc(sizeof(*keyboard))) == NULL)
return NULL;
applet->priv = keyboard;
keyboard->pid = -1;
keyboard->width = -1;
keyboard->height = -1;
keyboard->window = NULL;
keyboard->pr_box = NULL;
_init_size(keyboard, helper);
ret = gtk_toggle_button_new();
#if GTK_CHECK_VERSION(2, 12, 0)
gtk_widget_set_tooltip_text(ret, _("Show keyboard"));
#endif
gtk_button_set_relief(GTK_BUTTON(ret), GTK_RELIEF_NONE);
g_signal_connect(G_OBJECT(ret), "toggled", G_CALLBACK(
_on_keyboard_toggled), applet);
image = gtk_image_new_from_icon_name("input-keyboard",
applet->helper->icon_size);
gtk_container_add(GTK_CONTAINER(ret), image);
gtk_widget_show_all(ret);
g_idle_add(_init_idle, applet);
return ret;
}
static void _init_size(Keyboard * keyboard, PanelAppletHelper * helper)
{
char const * p;
char * q;
long l;
if((p = helper->config_get(helper->panel, "keyboard", "width")) != NULL
&& p[0] != '\0' && (l = strtol(p, &q, 0)) > 0
&& *q == '\0')
keyboard->width = l;
if((p = helper->config_get(helper->panel, "keyboard", "height")) != NULL
&& p[0] != '\0' && (l = strtol(p, &q, 0)) > 0
&& *q == '\0')
keyboard->height = l;
if(keyboard->width == -1 && keyboard->height == -1)
{
keyboard->width = 480;
keyboard->height = 160;
}
else if(keyboard->width == -1)
keyboard->width = keyboard->height * 3;
else if(keyboard->height == -1)
keyboard->height = keyboard->width / 3;
#ifdef DEBUG
fprintf(stderr, "DEBUG: %s() width=%d height=%d\n", __func__,
keyboard->width, keyboard->height);
#endif
}
/* callbacks */
static gboolean _init_idle(gpointer data)
{
PanelApplet * applet = data;
PanelAppletHelper * helper = applet->helper;
Keyboard * keyboard = applet->priv;
unsigned long xid;
if(keyboard->window != NULL)
return FALSE;
if(_idle_child(keyboard, helper, &xid) != 0)
return FALSE;
keyboard->window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
gtk_window_set_accept_focus(GTK_WINDOW(keyboard->window), FALSE);
#if GTK_CHECK_VERSION(2, 6, 0)
gtk_window_set_focus_on_map(GTK_WINDOW(keyboard->window), FALSE);
#endif
gtk_window_set_type_hint(GTK_WINDOW(keyboard->window),
GDK_WINDOW_TYPE_HINT_DOCK);
keyboard->socket = gtk_socket_new();
gtk_widget_set_size_request(keyboard->socket, keyboard->width,
keyboard->height);
gtk_container_add(GTK_CONTAINER(keyboard->window), keyboard->socket);
gtk_socket_add_id(GTK_SOCKET(keyboard->socket), xid);
gtk_widget_show(keyboard->socket);
return FALSE;
}
static int _idle_child(Keyboard * keyboard, PanelAppletHelper * helper,
unsigned long * xid)
{
char * argv[] = { "sh", "-c", PANEL_KEYBOARD_COMMAND_DEFAULT, NULL };
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, "keyboard", "command"))
!= NULL && (q = strdup(p)) != NULL)
argv[2] = q;
res = g_spawn_async_with_pipes(NULL, argv, NULL, G_SPAWN_SEARCH_PATH,
NULL, NULL, &keyboard->pid, NULL, &out, NULL, &error);
free(q);
if(res != TRUE)
{
helper->error(helper->panel, error->message, 1);
g_error_free(error);
return -1;
}
if((size = read(out, buf, sizeof(buf) - 1)) <= 0) /* XXX may block */
/* XXX not very explicit... */
return -helper->error(helper->panel, "read", 1);
buf[size] = '\0';
if(sscanf(buf, "%lu", xid) != 1)
return -1; /* XXX warn the user */
return 0;
}
/* keyboard_destroy */
static void _keyboard_destroy(PanelApplet * applet)
{
Keyboard * keyboard = applet->priv;
if(keyboard->pid > 0)
g_spawn_close_pid(keyboard->pid); /* XXX may be dead already */
free(keyboard);
}
/* keyboard_settings */
static void _settings_apply(Keyboard * keyboard, PanelAppletHelper * helper);
static void _settings_reset(Keyboard * keyboard, PanelAppletHelper * helper);
static GtkWidget * _settings_widget(Keyboard * keyboard, PanelApplet * applet);
/* callbacks */
static void _settings_on_width_value_changed(gpointer data);
static void _settings_on_height_value_changed(gpointer data);
static GtkWidget * _keyboard_settings(PanelApplet * applet, gboolean apply,
gboolean reset)
{
PanelAppletHelper * helper = applet->helper;
Keyboard * keyboard = applet->priv;
#ifdef DEBUG
fprintf(stderr, "DEBUG: %s(%p, %s, %s)\n", __func__, (void*)applet,
apply ? "TRUE" : "FALSE", reset ? "TRUE" : "FALSE");
#endif
if(keyboard->pr_box == NULL)
{
keyboard->pr_box = _settings_widget(keyboard, applet);
reset = TRUE;
}
if(reset == TRUE)
_settings_reset(keyboard, helper);
if(apply == TRUE)
_settings_apply(keyboard, helper);
return keyboard->pr_box;
}
static void _settings_apply(Keyboard * keyboard, PanelAppletHelper * helper)
{
char const * p;
char buf[16];
p = gtk_entry_get_text(GTK_ENTRY(keyboard->pr_command));
helper->config_set(helper->panel, "keyboard", "command", p);
keyboard->width = gtk_spin_button_get_value_as_int(GTK_SPIN_BUTTON(
keyboard->pr_width));
snprintf(buf, sizeof(buf), "%u", (unsigned)keyboard->width);
helper->config_set(helper->panel, "keyboard", "width", buf);
keyboard->height = gtk_spin_button_get_value_as_int(GTK_SPIN_BUTTON(
keyboard->pr_height));
snprintf(buf, sizeof(buf), "%u", (unsigned)keyboard->height);
helper->config_set(helper->panel, "keyboard", "height", buf);
gtk_widget_set_size_request(keyboard->socket, keyboard->width,
keyboard->height);
}
static void _settings_reset(Keyboard * keyboard, PanelAppletHelper * helper)
{
char const * p;
gdouble value;
if((p = helper->config_get(helper->panel, "keyboard", "command"))
== NULL)
p = PANEL_KEYBOARD_COMMAND_DEFAULT;
gtk_entry_set_text(GTK_ENTRY(keyboard->pr_command), p);
value = keyboard->width;
gtk_spin_button_set_value(GTK_SPIN_BUTTON(keyboard->pr_width), value);
value = keyboard->height;
gtk_spin_button_set_value(GTK_SPIN_BUTTON(keyboard->pr_height), value);
}
static GtkWidget * _settings_widget(Keyboard * keyboard, PanelApplet * applet)
{
GtkSizeGroup * group;
GtkWidget * vbox;
GtkWidget * hbox;
GtkWidget * vbox2;
GtkWidget * frame;
GtkWidget * widget;
group = gtk_size_group_new(GTK_SIZE_GROUP_HORIZONTAL);
vbox = gtk_vbox_new(FALSE, 4);
hbox = gtk_hbox_new(FALSE, 4);
widget = gtk_label_new(_("Command:"));
gtk_box_pack_start(GTK_BOX(hbox), widget, FALSE, TRUE, 0);
keyboard->pr_command = gtk_entry_new();
gtk_box_pack_start(GTK_BOX(hbox), keyboard->pr_command, TRUE, TRUE, 0);
gtk_box_pack_start(GTK_BOX(vbox), hbox, FALSE, TRUE, 0);
/* frame */
frame = gtk_frame_new("Size:");
vbox2 = gtk_vbox_new(FALSE, 4);
gtk_container_set_border_width(GTK_CONTAINER(vbox2), 4);
/* width */
hbox = gtk_hbox_new(FALSE, 4);
widget = gtk_label_new(_("Width:"));
gtk_size_group_add_widget(group, widget);
gtk_box_pack_start(GTK_BOX(hbox), widget, FALSE, TRUE, 0);
keyboard->pr_width = gtk_spin_button_new_with_range(1.0, 65535.0, 1.0);
gtk_spin_button_set_digits(GTK_SPIN_BUTTON(keyboard->pr_width), 0);
g_signal_connect_swapped(keyboard->pr_width, "value-changed",
G_CALLBACK(_settings_on_width_value_changed), applet);
gtk_box_pack_start(GTK_BOX(hbox), keyboard->pr_width, TRUE, TRUE, 0);
gtk_box_pack_start(GTK_BOX(vbox2), hbox, FALSE, TRUE, 0);
/* height */
hbox = gtk_hbox_new(FALSE, 4);
widget = gtk_label_new(_("Height:"));
gtk_size_group_add_widget(group, widget);
gtk_box_pack_start(GTK_BOX(hbox), widget, FALSE, TRUE, 0);
keyboard->pr_height = gtk_spin_button_new_with_range(1.0, 65535.0, 1.0);
gtk_spin_button_set_digits(GTK_SPIN_BUTTON(keyboard->pr_height), 0);
g_signal_connect_swapped(keyboard->pr_height, "value-changed",
G_CALLBACK(_settings_on_height_value_changed), applet);
gtk_box_pack_start(GTK_BOX(hbox), keyboard->pr_height, TRUE, TRUE, 0);
gtk_box_pack_start(GTK_BOX(vbox2), hbox, FALSE, TRUE, 0);
/* ratio */
keyboard->pr_ratio = gtk_check_button_new_with_label(_("Keep ratio"));
gtk_box_pack_start(GTK_BOX(vbox2), keyboard->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)
{
PanelApplet * applet = data;
Keyboard * keyboard = applet->priv;
gdouble value;
value = gtk_spin_button_get_value(GTK_SPIN_BUTTON(keyboard->pr_width));
if(gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(keyboard->pr_ratio)))
gtk_spin_button_set_value(GTK_SPIN_BUTTON(keyboard->pr_height),
value / 3);
}
static void _settings_on_height_value_changed(gpointer data)
{
PanelApplet * applet = data;
Keyboard * keyboard = applet->priv;
gdouble value;
value = gtk_spin_button_get_value(GTK_SPIN_BUTTON(keyboard->pr_height));
if(gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(keyboard->pr_ratio)))
gtk_spin_button_set_value(GTK_SPIN_BUTTON(keyboard->pr_width),
value * 3);
}
/* callbacks */
/* on_keyboard_toggled */
static void _on_keyboard_toggled(GtkWidget * widget, gpointer data)
{
PanelApplet * applet = data;
PanelAppletHelper * helper = applet->helper;
Keyboard * keyboard = applet->priv;
gint x = 0;
gint y = 0;
gboolean push_in;
if(keyboard->window == NULL)
_init_idle(keyboard);
if(keyboard->window == NULL)
return;
helper->position_menu(helper->panel, (GtkMenu*)keyboard->window, &x, &y,
&push_in);
gtk_window_move(GTK_WINDOW(keyboard->window), x, y);
if(gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(widget)))
gtk_widget_show(keyboard->window);
else
gtk_widget_hide(keyboard->window);
}