aboutsummaryrefslogtreecommitdiff
path: root/src/main-window.vala
blob: 993e43ec51bb16bbc4089221dc9e794b78ed6b0f (plain)
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
39
40
41
42
43
44
45
46
47
48
49
50
51
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
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
/* -*- Mode: Vala; indent-tabs-mode: nil; tab-width: 4 -*-
 *
 * Copyright (C) 2011,2012 Canonical Ltd
 * Copyright (C) 2015-2017 Mike Gabriel <mike.gabriel@das-netzwerkteam.de>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 3 as
 * published by the Free Software Foundation.
 *
 * 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/>.
 *
 * Authors: Robert Ancell <robert.ancell@canonical.com>
 *          Michael Terry <michael.terry@canonical.com>
 *          Mike Gabriel <mike.gabriel@das-netzwerkteam.de>
 */

public class MainWindow : Gtk.Window
{
    public MenuBar menubar;

    private List<Monitor> monitors;
    private Monitor? primary_monitor;
    private Monitor active_monitor;
    private string only_on_monitor;
    private bool monitor_setting_ok;
    private Background background;
    private Gtk.Box login_box;
    private Gtk.Box hbox;
    private Gtk.Button back_button;
    private ShutdownDialog? shutdown_dialog = null;
    private int window_size_x;
    private int window_size_y;

    public ListStack stack;

    // Menubar is smaller, but with shadow, we reserve more space
    public const int MENUBAR_HEIGHT = 32;

    construct
    {
        events |= Gdk.EventMask.POINTER_MOTION_MASK;

        var accel_group = new Gtk.AccelGroup ();
        add_accel_group (accel_group);

        var bg_color = Gdk.RGBA ();
        bg_color.parse (AGSettings.get_string (AGSettings.KEY_BACKGROUND_COLOR));
        override_background_color (Gtk.StateFlags.NORMAL, bg_color);
        get_accessible ().set_name (_("Login Screen"));
        has_resize_grip = false;
        ArcticaGreeter.add_style_class (this);

        background = new Background ();
        add (background);
        ArcticaGreeter.add_style_class (background);

        login_box = new Gtk.Box (Gtk.Orientation.VERTICAL, 0);
        login_box.show ();
        background.add (login_box);

        /* Box for menubar shadow */
        var menubox = new Gtk.EventBox ();
        var menualign = new Gtk.Alignment (0.0f, 0.0f, 1.0f, 0.0f);
        var shadow_path = Path.build_filename (Config.PKGDATADIR,
                                               "shadow.png", null);
        var shadow_style = "";
        if (FileUtils.test (shadow_path, FileTest.EXISTS))
        {
            shadow_style = "background-image: url('%s');
                            background-repeat: repeat;".printf(shadow_path);
        }
        try
        {
            var style = new Gtk.CssProvider ();
            style.load_from_data ("* {background-color: transparent;
                                      %s
                                     }".printf(shadow_style), -1);
            var context = menubox.get_style_context ();
            context.add_provider (style,
                                  Gtk.STYLE_PROVIDER_PRIORITY_APPLICATION);
        }
        catch (Error e)
        {
            debug ("Internal error loading menubox style: %s", e.message);
        }
        menubox.set_size_request (-1, MENUBAR_HEIGHT);
        menubox.show ();
        menualign.show ();
        menubox.add (menualign);
        login_box.add (menubox);
        ArcticaGreeter.add_style_class (menualign);
        ArcticaGreeter.add_style_class (menubox);

        menubar = new MenuBar (background, accel_group);
        menubar.show ();
        menualign.add (menubar);
        ArcticaGreeter.add_style_class (menubar);

        hbox = new Gtk.Box (Gtk.Orientation.HORIZONTAL, 0);
        hbox.expand = true;
        hbox.show ();
        login_box.add (hbox);

        var align = new Gtk.Alignment (0.5f, 0.5f, 0.0f, 0.0f);
        // Hack to avoid gtk 3.20's new allocate logic, which messes us up.
        align.resize_mode = Gtk.ResizeMode.QUEUE;
        align.set_size_request (grid_size, -1);
        align.margin_bottom = MENUBAR_HEIGHT; /* offset for menubar at top */
        align.show ();
        hbox.add (align);

        back_button = new FlatButton ();
        back_button.get_accessible ().set_name (_("Back"));
        Gtk.button_set_focus_on_click (back_button, false);
        var image = new Gtk.Image.from_file (Path.build_filename (Config.PKGDATADIR, "arrow_left.png", null));
        image.show ();
        back_button.set_size_request (grid_size - GreeterList.BORDER * 2, grid_size - GreeterList.BORDER * 2);

        try
        {
            var style = new Gtk.CssProvider ();
            style.load_from_data ("* {background-color: transparent;
                                      %s
                                     }".printf(shadow_style), -1);
            var context = back_button.get_style_context();
            context.add_provider (style,
                                  Gtk.STYLE_PROVIDER_PRIORITY_APPLICATION);
        }
        catch (Error e)
        {
            debug ("Internal error loading back button style: %s", e.message);
        }

        back_button.add (image);
        back_button.clicked.connect (pop_list);

        align.add (back_button);

        align = new Gtk.Alignment (0.0f, 0.5f, 0.0f, 1.0f);
        align.show ();
        hbox.add (align);

        stack = new ListStack ();
        stack.show ();
        align.add (stack);

        add_user_list ();

        window_size_x = 0;
        window_size_y = 0;
        primary_monitor = null;

        only_on_monitor = AGSettings.get_string(AGSettings.KEY_ONLY_ON_MONITOR);
        monitor_setting_ok = only_on_monitor == "auto";

        if (ArcticaGreeter.singleton.test_mode)
        {
            /* Simulate an 800x600 monitor to the left of a 640x480 monitor */
            monitors = new List<Monitor> ();
            monitors.append (new Monitor (0, 0, 800, 600));
            monitors.append (new Monitor (800, 120, 640, 480));
            background.set_monitors (monitors);
            move_to_monitor (monitors.nth_data (0));
            resize (800 + 640, 600);
        }
        else
        {
            var screen = get_screen ();
            screen.monitors_changed.connect (monitors_changed_cb);
            monitors_changed_cb (screen);
        }
    }

    public void push_list (GreeterList widget)
    {
        stack.push (widget);

        if (stack.num_children > 1)
            back_button.show ();
    }

    public void pop_list ()
    {
        if (stack.num_children <= 2)
            back_button.hide ();

        stack.pop ();
    }

    public override void size_allocate (Gtk.Allocation allocation)
    {
        base.size_allocate (allocation);

        if (hbox != null)
        {
            hbox.margin_left = get_grid_offset (get_allocated_width ()) + grid_size;
            hbox.margin_right = get_grid_offset (get_allocated_width ());
            hbox.margin_top = get_grid_offset (get_allocated_height ());
            hbox.margin_bottom = get_grid_offset (get_allocated_height ());
        }
    }

    public void before_session_start()
    {
        debug ("Cleaning up menu bar related processes (i.e. orca, onboard, etc.)");
        menubar.cleanup();
    }

    public override void realize ()
    {
        base.realize ();
        Gdk.DrawingContext background_context;
        background_context = get_window().begin_draw_frame(get_window().get_visible_region());

        background.set_surface (background_context.get_cairo_context().get_target());

        get_window().end_draw_frame(background_context);
    }

    private void monitors_changed_cb (Gdk.Screen screen)
    {
        Gdk.Display display;
        display = screen.get_display();

        Gdk.Rectangle geometry;
        Gdk.Monitor primary = display.get_primary_monitor();
        geometry = primary.get_geometry();

        window_size_x = 0;
        window_size_y = 0;

        monitors = new List<Monitor> ();
        primary_monitor = null;

        for (var i = 0; i < display.get_n_monitors (); i++)
        {
            Gdk.Monitor monitor = display.get_monitor(i);
            geometry = monitor.get_geometry ();
            debug ("Monitor %d is %dx%d pixels at %d,%d", i, geometry.width, geometry.height, geometry.x, geometry.y);

            if (window_size_x < geometry.x + geometry.width)
            {
                window_size_x = geometry.x + geometry.width;
            }

            if (window_size_y < geometry.y + geometry.height)
            {
                window_size_y = geometry.y + geometry.height;
            }

            if (monitor_is_unique_position (display, i))
            {
                var greeter_monitor = new Monitor (geometry.x, geometry.y, geometry.width, geometry.height);
                var plug_name = monitor.get_model();
                monitors.append (greeter_monitor);

                if (plug_name == only_on_monitor)
                    monitor_setting_ok = true;

                if (plug_name == only_on_monitor || primary_monitor == null || primary == monitor)
                    primary_monitor = greeter_monitor;
            }
        }

        debug ("MainWindow is %dx%d pixels", window_size_x, window_size_y);

        background.set_monitors (monitors);
        resize (window_size_x, window_size_y);
        move (0, 0);
        move_to_monitor (primary_monitor);
    }

    /* Check if a monitor has a unique position */
    private bool monitor_is_unique_position (Gdk.Display display, int n)
    {
        Gdk.Rectangle g0;
        Gdk.Monitor mon0;
        mon0 = display.get_monitor(n);
        g0 = mon0.get_geometry ();

        for (var i = n + 1; i < display.get_n_monitors (); i++)
        {
            Gdk.Rectangle g1;
            Gdk.Monitor mon1;
            mon1 = display.get_monitor(i);
            g1 = mon1.get_geometry();

            if (g0.x == g1.x && g0.y == g1.y)
                return false;
        }

        return true;
    }

    public override bool motion_notify_event (Gdk.EventMotion event)
    {
        if (!monitor_setting_ok || only_on_monitor == "auto")
        {
            var x = (int) (event.x + 0.5);
            var y = (int) (event.y + 0.5);

            /* Get motion event relative to this widget */
            if (event.window != get_window ())
            {
                int w_x, w_y;
                get_window ().get_origin (out w_x, out w_y);
                x -= w_x;
                y -= w_y;
                event.window.get_origin (out w_x, out w_y);
                x += w_x;
                y += w_y;
            }

            foreach (var m in monitors)
            {
                if (x >= m.x && x <= m.x + m.width && y >= m.y && y <= m.y + m.height)
                {
                    move_to_monitor (m);
                    break;
                }
            }
        }
        return false;
    }

    private void move_to_monitor (Monitor monitor)
    {
        active_monitor = monitor;
        login_box.set_size_request (monitor.width, monitor.height);
        background.set_active_monitor (monitor);
        background.move (login_box, monitor.x, monitor.y);

        if (shutdown_dialog != null)
        {
            shutdown_dialog.set_active_monitor (monitor);
            background.move (shutdown_dialog, monitor.x, monitor.y);
        }
    }

    private void add_user_list ()
    {
        GreeterList greeter_list;
        greeter_list = new UserList (background, menubar);
        greeter_list.show ();
        ArcticaGreeter.add_style_class (greeter_list);
        push_list (greeter_list);
    }

    public override bool key_press_event (Gdk.EventKey event)
    {
        var top = stack.top ();

        if (stack.top () is UserList)
        {
            var user_list = stack.top () as UserList;
            if (!user_list.show_hidden_users)
            {
                var shift_mask = Gdk.ModifierType.CONTROL_MASK | Gdk.ModifierType.MOD1_MASK;
                var control_mask = Gdk.ModifierType.SHIFT_MASK | Gdk.ModifierType.MOD1_MASK;
                var alt_mask = Gdk.ModifierType.CONTROL_MASK | Gdk.ModifierType.SHIFT_MASK;
                if (((event.keyval == Gdk.Key.Shift_L || event.keyval == Gdk.Key.Shift_R) && (event.state & shift_mask) == shift_mask) ||
                    ((event.keyval == Gdk.Key.Control_L || event.keyval == Gdk.Key.Control_R) && (event.state & control_mask) == control_mask) ||
                    ((event.keyval == Gdk.Key.Alt_L || event.keyval == Gdk.Key.Alt_R) && (event.state & alt_mask) == alt_mask))
                {
                    debug ("Hidden user key combination detected");
                    user_list.show_hidden_users = true;
                    return true;
                }
            }
        }

        switch (event.keyval)
        {
        case Gdk.Key.Escape:
            if (login_box.sensitive)
                top.cancel_authentication ();
            if (shutdown_dialog != null)
                shutdown_dialog.cancel ();
            return true;
        case Gdk.Key.Page_Up:
        case Gdk.Key.KP_Page_Up:
            if (login_box.sensitive)
                top.scroll (GreeterList.ScrollTarget.START);
            return true;
        case Gdk.Key.Page_Down:
        case Gdk.Key.KP_Page_Down:
            if (login_box.sensitive)
                top.scroll (GreeterList.ScrollTarget.END);
            return true;
        case Gdk.Key.Up:
        case Gdk.Key.KP_Up:
            if (login_box.sensitive)
                top.scroll (GreeterList.ScrollTarget.UP);
            return true;
        case Gdk.Key.Down:
        case Gdk.Key.KP_Down:
            if (login_box.sensitive)
                top.scroll (GreeterList.ScrollTarget.DOWN);
            return true;
        case Gdk.Key.Left:
        case Gdk.Key.KP_Left:
            if (shutdown_dialog != null)
                shutdown_dialog.focus_prev ();
            return true;
        case Gdk.Key.Right:
        case Gdk.Key.KP_Right:
            if (shutdown_dialog != null)
                shutdown_dialog.focus_next ();
            return true;
        case Gdk.Key.F10:
            if (login_box.sensitive)
                menubar.select_first (false);
            return true;
        case Gdk.Key.PowerOff:
            show_shutdown_dialog (ShutdownDialogType.SHUTDOWN);
            return true;
        case Gdk.Key.Print:
            debug ("Taking screenshot");
            var root = Gdk.get_default_root_window ();
            var screenshot = Gdk.pixbuf_get_from_window (root, 0, 0, root.get_width (), root.get_height ());
            try
            {
                screenshot.save ("Screenshot.png", "png", null);
            }
            catch (Error e)
            {
                warning ("Failed to save screenshot: %s", e.message);
            }
            return true;
        case Gdk.Key.z:
            if (ArcticaGreeter.singleton.test_mode && (event.state & Gdk.ModifierType.MOD1_MASK) != 0)
            {
                show_shutdown_dialog (ShutdownDialogType.SHUTDOWN);
                return true;
            }
            break;
        case Gdk.Key.Z:
            if (ArcticaGreeter.singleton.test_mode && (event.state & Gdk.ModifierType.MOD1_MASK) != 0)
            {
                show_shutdown_dialog (ShutdownDialogType.RESTART);
                return true;
            }
            break;
        }

        return base.key_press_event (event);
    }

    public void set_keyboard_state ()
    {
        menubar.set_keyboard_state ();
    }

    public void show_shutdown_dialog (ShutdownDialogType type)
    {
        if (shutdown_dialog != null)
            shutdown_dialog.destroy ();

        /* Stop input to login box */
        login_box.sensitive = false;

        shutdown_dialog = new ShutdownDialog (type, background);
        shutdown_dialog.closed.connect (close_shutdown_dialog);
        background.add (shutdown_dialog);
        move_to_monitor (active_monitor);
        shutdown_dialog.visible = true;
    }

    public void close_shutdown_dialog ()
    {
        if (shutdown_dialog == null)
            return;

        shutdown_dialog.destroy ();
        shutdown_dialog = null;

        login_box.sensitive = true;
    }
}