Mastering Glade for PHP-GTK2
PHP-GTK2 Cookbook Vol.2
PHP-GTK2 Cookbook Vol.1
Intro to Glade for PHP-GTK2
PHP-GTK2 Demystified
PHP-GTK ExplorerYour "secret weapon" for learning, exploring, understanding and mastering PHP-GTK2!
[Free Download Here]
|
|
|
| Kiosk Application Template #3 |
|
This is the third template of the kiosk application template series.
This produces exactly the same output as the second template. The only difference it's re-written using classes, or object-oriented programming.
As you can see from the codes below, the login and the main application are now neatly encapsulated into each of its own class. This makes it much easier and better for maintenance and debugging.
The Code
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
40
41
42
43
44
45
46
47
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
79
81
82
83
85
87
88
89
90
92
93
95
96
97
98
99
100
101
103
106
107
108
111
112
113
114
116
117
119
120
121
122
125
126
127
128
129
131
133
134
135
136
138
140
141
142
143
146
148
150
151
152
153
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
178
179
180
181
182
183
184
185
186
187
188
189
193
194
195
196
197
198
199
200
201
203
204
206
207
208
209
210
211
212
213
214
215
216
217
219
220
221
222
223
224
225
226
227
228
229
230
234
235
236
237
238
242
243
244
245
246
248
249
250
251
252
253
254
255
256
257
259
262
263
264
266
267
268
269
270
271
272
274
275
276
277
278
279
280
283
284
285
286
287
288
289
290
291
292
293
294
| <?php
define('MAX_USAGE', 30); // max usage time = 30 min
define('INACTIVITY', 10); // auto logout after 10 min of inactivity
$app = new KioskApp();
class KioskApp {
public function __construct() {
while(1) {
$login = new Login();
$login->login_success = 0;
while($login->login_success!=1) {
$login->go();
}
// starts the main program only if login successful
$main = new MainApp();
}
}
}
class MainApp {
protected $start_time; // start time
protected $last_activity; // time of last activity
protected $timeout_maxtime; // timeout_id for maxtime
protected $timeout_inactivity; // timeout_id for inactivity
protected $main_win; // main application window
public function __construct() {
$this->go();
}
public function go() {
$this->setup();
$this->main_win->run();
$this->main_win->destroy();
}
protected function setup() {
$dialog = new GtkDialog();
$dialog->fullscreen();
$eventbox = new GtkEventBox(); // note 1
$dialog->vbox->pack_start($eventbox); // note 1
$vbox = new GtkVBox();
$eventbox->add($vbox);
$vbox->pack_start(new GtkLabel());
// display title
$title = new GtkLabel("This is the main program");
$title->modify_font(new PangoFontDescription(
"Times New Roman Italic 10"));
$title->modify_fg(Gtk::STATE_NORMAL, GdkColor::parse("#0000ff"));
$title->set_size_request(-1, 40);
$vbox->pack_start($title, 0);
$vbox->pack_start(new GtkLabel("User verified"), 0);
$vbox->pack_start(new GtkLabel("Main application starts..."), 0);
$vbox->pack_start(new GtkLabel(
"Note: application will auto-logout after 30 min of usage"), 0);
$vbox->pack_start(new GtkLabel(
"or after 10 min of inactivity (i.e. no mouse or keyboard movement)"), 0);
$vbox->pack_start(new GtkLabel());
// sets up a logout button
$vbox->pack_start($hbox = new GtkHBox(), 0);
$hbox->pack_start(new GtkLabel());
$button = new GtkButton('Logout');
$hbox->pack_start($button, 0);
$button->connect('clicked', array(&$this, 'on_logout_button'));
// auto-logout after 30 minutes of usage
$this->start_time = time();
$this->timeout_maxtime =
Gtk::timeout_add(MAX_USAGE * 60 * 1000, array(&$this, 'logout'));
// check for inactivity
$this->last_activity = time();
$dialog->connect('key-press-event', array(&$this, 'on_keypress'));
$dialog->connect('button-press-event', array(&$this, 'on_buttonpress'));
$dialog->connect('motion-notify-event', array(&$this, 'on_motion'));
$this->timeout_inactivity = Gtk::timeout_add(1000,
array(&$this, 'check_inactivity'));
$dialog->set_has_separator(false);
$dialog->show_all();
$this->main_win = $dialog;
}
public function on_logout_button($button) {
$this->logout();
}
public function logout() {
Gtk::timeout_remove($this->timeout_maxtime);
Gtk::timeout_remove($this->timeout_inactivity);
$this->main_win->destroy();
}
function on_keypress($widget, $event) {
$this->last_activity = time(); // note 7
return false;
}
function on_motion($widget, $event) {
$this->last_activity = time(); // note 7
return false;
}
function on_buttonpress($widget, $event) {
$this->last_activity = time(); // note 7
return false;
}
function check_inactivity() {
$time_elapsed = time() - $this->last_activity;
if ($time_elapsed>INACTIVITY * 60 * 1000 ) { // note 8
echo "no activity. auto-logout...\n";
$this->logout(); // note 8
return false;
} else {
return true;
}
}
}
class Login {
protected $login_dialog; // the login dialog
public $login_success = 0; // flag to indicate whether login is successful
public function __construct() {
}
public function go() {
$this->setup();
$this->login_dialog->run();
$this->login_dialog->destroy();
}
// setup the login dialog
function setup() {
$dialog = new GtkDialog('Login', null, Gtk::DIALOG_MODAL);
$dialog->fullscreen();
$vbox = $dialog->vbox;
$vbox->pack_start(new GtkLabel());
// display title
$title = new GtkLabel("Login");
$title->modify_font(new PangoFontDescription(
"Times New Roman Italic 10"));
$title->modify_fg(Gtk::STATE_NORMAL, GdkColor::parse("#0000ff"));
$title->set_size_request(-1, 40);
$vbox->pack_start($title, 0, 0);
$field_labels = array("Username:", "Password:");
$table = new GtkTable();
$row = 0;
$input = array();
foreach ($field_labels as $field_label) {
$label = new GtkLabel($field_label);
$label->set_alignment(0,0);
$table->attach($label, 0, 1, $row, $row+1);
$input[$row] = new GtkEntry();
$table->attach($input[$row], 1, 2, $row, $row+1);
if (eregi("password", $field_label))
$input[$row]->set_visibility(false);
++$row;
}
$vbox->pack_start($hbox = new GtkHBox(), 0);
$vbox->pack_start(new GtkLabel());
$hbox->pack_start(new GtkLabel());
$hbox->pack_start($table, 0);
$hbox->pack_start(new GtkLabel());
$button_hbox = new GtkHBox();
$button_ok = GtkButton::new_from_stock(Gtk::STOCK_OK);
$button_ok->set_size_request(86, -1);
$button_hbox->pack_start($button_ok, 0);
$button_hbox->pack_start(new GtkLabel());
$table->attach($button_hbox, 1, 2, $row, $row+1);
++$row;
$status = new GtkLabel(' ');
$table->attach($status, 1, 2, $row, $row+1);
$button_ok->connect('clicked', array(&$this, 'on_button_ok'),
$input, $status);
$dialog->connect('key-press-event', array(&$this, 'on_key'),
$button_ok, $status);
$dialog->set_has_separator(false);
$dialog->show_all();
$this->login_dialog = $dialog;
}
public function on_button_ok($button, $input, $status) {
$username = $input[0]->get_text();
$passwd = $input[1]->get_text();
if ($username=='') {
$input[0]->grab_focus();
return true;
}
if ($passwd=='') {
$input[1]->grab_focus();
return true;
}
if ($username!='' && $passwd!='') {
if ($this->validate($username, $passwd)) {
$this->login_success = 1;
$this->login_dialog->destroy();
} else {
$status->set_text('invalid username/password');
}
}
}
protected function validate($username, $password) {
if ($username=='user1' && $password=='phpgtk2') {
return true;
} else {
return false;
}
}
function on_key($widget, $event, $button_ok, $status) {
$status->set_text('');
if ($event->keyval==Gdk::KEY_Return) {
$button_ok->clicked();
return true;
} else {
return false;
}
}
}
?>
|
Explanation
Please refer to kiosk template #2.
Related Articles
ResponsesLeave a Reply
|
Search PHP-GTK2 Manual
Full-text search on php-gtk2 manual
|
March 15, 2010 2:13am
Is this article useful?
Found any bugs?
Improvements for the above article?
Please enter below...