clients/desktop-shell.c

   1 /*
   2  * Copyright © 2011 Kristian Høgsberg
   3  * Copyright © 2011 Collabora, Ltd.
   4  *
   5  * Permission to use, copy, modify, distribute, and sell this software and its
   6  * documentation for any purpose is hereby granted without fee, provided that
   7  * the above copyright notice appear in all copies and that both that copyright
   8  * notice and this permission notice appear in supporting documentation, and
   9  * that the name of the copyright holders not be used in advertising or
  10  * publicity pertaining to distribution of the software without specific,
  11  * written prior permission.  The copyright holders make no representations
  12  * about the suitability of this software for any purpose.  It is provided "as
  13  * is" without express or implied warranty.
  14  *
  15  * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
  16  * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
  17  * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
  18  * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
  19  * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
  20  * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
  21  * OF THIS SOFTWARE.
  22  */
  23
  24 #include <stdint.h>
  25 #include <stdio.h>
  26 #include <stdlib.h>
  27 #include <string.h>
  28 #include <fcntl.h>
  29 #include <unistd.h>
  30 #include <math.h>
  31 #include <cairo.h>
  32 #include <sys/wait.h>
  33 #include <sys/timerfd.h>
  34 #include <sys/epoll.h>
  35 #include <linux/input.h>
  36 #include <libgen.h>
  37 #include <ctype.h>
  38 #include <time.h>
  39
  40 #include <wayland-client.h>
  41 #include "window.h"
  42 #include "../shared/cairo-util.h"
  43 #include "../shared/config-parser.h"
  44
  45 #include "desktop-shell-client-protocol.h"
  46
  47 extern char **environ; /* defined by libc */
  48
  49 struct desktop {
  50         struct display *display;
  51         struct desktop_shell *shell;
  52         struct unlock_dialog *unlock_dialog;
  53         struct task unlock_task;
  54         struct wl_list outputs;
  55
  56         struct window *grab_window;
  57         struct widget *grab_widget;
  58
  59         enum cursor_type grab_cursor;
  60 };
  61
  62 struct surface {
  63         void (*configure)(void *data,
  64                           struct desktop_shell *desktop_shell,
  65                           uint32_t edges, struct window *window,
  66                           int32_t width, int32_t height);
  67 };
  68
  69 struct panel {
  70         struct surface base;
  71         struct window *window;
  72         struct widget *widget;
  73         struct wl_list launcher_list;
  74         struct panel_clock *clock;
  75 };
  76
  77 struct background {
  78         struct surface base;
  79         struct window *window;
  80         struct widget *widget;
  81 };
  82
  83 struct output {
  84         struct wl_output *output;
  85         struct wl_list link;
  86
  87         struct panel *panel;
  88         struct background *background;
  89 };
  90
  91 struct panel_launcher {
  92         struct widget *widget;
  93         struct panel *panel;
  94         cairo_surface_t *icon;
  95         int focused, pressed;
  96         char *path;
  97         struct wl_list link;
  98         struct wl_array envp;
  99         struct wl_array argv;
 100 };
 101
 102 struct panel_clock {
 103         struct widget *widget;
 104         struct panel *panel;
 105         struct task clock_task;
 106         int clock_fd;
 107 };
 108
 109 struct unlock_dialog {
 110         struct window *window;
 111         struct widget *widget;
 112         struct widget *button;
 113         int button_focused;
 114         int closing;
 115         struct desktop *desktop;
 116 };
 117
 118 static char *key_background_image = DATADIR "/weston/pattern.png";
 119 static char *key_background_type = "tile";
 120 static uint32_t key_panel_color = 0xaa000000;
 121 static uint32_t key_background_color = 0xff002244;
 122 static char *key_launcher_icon;
 123 static char *key_launcher_path;
 124 static void launcher_section_done(void *data);
 125 static int key_locking = 1;
 126
 127 static const struct config_key shell_config_keys[] = {
 128         { "background-image", CONFIG_KEY_STRING, &key_background_image },
 129         { "background-type", CONFIG_KEY_STRING, &key_background_type },
 130         { "panel-color", CONFIG_KEY_UNSIGNED_INTEGER, &key_panel_color },
 131         { "background-color", CONFIG_KEY_UNSIGNED_INTEGER, &key_background_color },
 132         { "locking", CONFIG_KEY_BOOLEAN, &key_locking },
 133 };
 134
 135 static const struct config_key launcher_config_keys[] = {
 136         { "icon", CONFIG_KEY_STRING, &key_launcher_icon },
 137         { "path", CONFIG_KEY_STRING, &key_launcher_path },
 138 };
 139
 140 static const struct config_section config_sections[] = {
 141         { "shell",
 142           shell_config_keys, ARRAY_LENGTH(shell_config_keys) },
 143         { "launcher",
 144           launcher_config_keys, ARRAY_LENGTH(launcher_config_keys),
 145           launcher_section_done }
 146 };
 147
 148 static void
 149 sigchild_handler(int s)
 150 {
 151         int status;
 152         pid_t pid;
 153
 154         while (pid = waitpid(-1, &status, WNOHANG), pid > 0)
 155                 fprintf(stderr, "child %d exited\n", pid);
 156 }
 157
 158 static void
 159 menu_func(struct window *window, int index, void *data)
 160 {
 161         printf("Selected index %d from a panel menu.\n", index);
 162 }
 163
 164 static void
 165 show_menu(struct panel *panel, struct input *input, uint32_t time)
 166 {
 167         int32_t x, y;
 168         static const char *entries[] = {
 169                 "Roy", "Pris", "Leon", "Zhora"
 170         };
 171
 172         input_get_position(input, &x, &y);
 173         window_show_menu(window_get_display(panel->window),
 174                          input, time, panel->window,
 175                          x - 10, y - 10, menu_func, entries, 4);
 176 }
 177
 178 static void
 179 panel_launcher_activate(struct panel_launcher *widget)
 180 {
 181         char **argv;
 182         pid_t pid;
 183
 184         pid = fork();
 185         if (pid < 0) {
 186                 fprintf(stderr, "fork failed: %m\n");
 187                 return;
 188         }
 189
 190         if (pid)
 191                 return;
 192
 193         argv = widget->argv.data;
 194         if (execve(argv[0], argv, widget->envp.data) < 0) {
 195                 fprintf(stderr, "execl '%s' failed: %m\n", argv[0]);
 196                 exit(1);
 197         }
 198 }
 199
 200 static void
 201 panel_launcher_redraw_handler(struct widget *widget, void *data)
 202 {
 203         struct panel_launcher *launcher = data;
 204         cairo_surface_t *surface;
 205         struct rectangle allocation;
 206         cairo_t *cr;
 207
 208         surface = window_get_surface(launcher->panel->window);
 209         cr = cairo_create(surface);
 210
 211         widget_get_allocation(widget, &allocation);
 212         if (launcher->pressed) {
 213                 allocation.x++;
 214                 allocation.y++;
 215         }
 216
 217         cairo_set_source_surface(cr, launcher->icon,
 218                                  allocation.x, allocation.y);
 219         cairo_paint(cr);
 220
 221         if (launcher->focused) {
 222                 cairo_set_source_rgba(cr, 1.0, 1.0, 1.0, 0.4);
 223                 cairo_mask_surface(cr, launcher->icon,
 224                                    allocation.x, allocation.y);
 225         }
 226
 227         cairo_destroy(cr);
 228 }
 229
 230 static int
 231 panel_launcher_motion_handler(struct widget *widget, struct input *input,
 232                               uint32_t time, float x, float y, void *data)
 233 {
 234         struct panel_launcher *launcher = data;
 235
 236         widget_set_tooltip(widget, basename((char *)launcher->path), x, y);
 237
 238         return CURSOR_LEFT_PTR;
 239 }
 240
 241 static void
 242 set_hex_color(cairo_t *cr, uint32_t color)
 243 {
 244         cairo_set_source_rgba(cr,
 245                               ((color >> 16) & 0xff) / 255.0,
 246                               ((color >>  8) & 0xff) / 255.0,
 247                               ((color >>  0) & 0xff) / 255.0,
 248                               ((color >> 24) & 0xff) / 255.0);
 249 }
 250
 251 static void
 252 panel_redraw_handler(struct widget *widget, void *data)
 253 {
 254         cairo_surface_t *surface;
 255         cairo_t *cr;
 256         struct panel *panel = data;
 257
 258         surface = window_get_surface(panel->window);
 259         cr = cairo_create(surface);
 260         cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
 261         set_hex_color(cr, key_panel_color);
 262         cairo_paint(cr);
 263
 264         cairo_destroy(cr);
 265         cairo_surface_destroy(surface);
 266 }
 267
 268 static int
 269 panel_launcher_enter_handler(struct widget *widget, struct input *input,
 270                              float x, float y, void *data)
 271 {
 272         struct panel_launcher *launcher = data;
 273
 274         launcher->focused = 1;
 275         widget_schedule_redraw(widget);
 276
 277         return CURSOR_LEFT_PTR;
 278 }
 279
 280 static void
 281 panel_launcher_leave_handler(struct widget *widget,
 282                              struct input *input, void *data)
 283 {
 284         struct panel_launcher *launcher = data;
 285
 286         launcher->focused = 0;
 287         widget_destroy_tooltip(widget);
 288         widget_schedule_redraw(widget);
 289 }
 290
 291 static void
 292 panel_launcher_button_handler(struct widget *widget,
 293                               struct input *input, uint32_t time,
 294                               uint32_t button,
 295                               enum wl_pointer_button_state state, void *data)
 296 {
 297         struct panel_launcher *launcher;
 298
 299         launcher = widget_get_user_data(widget);
 300         widget_schedule_redraw(widget);
 301         if (state == WL_POINTER_BUTTON_STATE_RELEASED)
 302                 panel_launcher_activate(launcher);
 303 }
 304
 305 static void
 306 clock_func(struct task *task, uint32_t events)
 307 {
 308         struct panel_clock *clock =
 309                 container_of(task, struct panel_clock, clock_task);
 310         uint64_t exp;
 311
 312         if (read(clock->clock_fd, &exp, sizeof exp) != sizeof exp)
 313                 abort();
 314         widget_schedule_redraw(clock->widget);
 315 }
 316
 317 static void
 318 panel_clock_redraw_handler(struct widget *widget, void *data)
 319 {
 320         cairo_surface_t *surface;
 321         struct panel_clock *clock = data;
 322         cairo_t *cr;
 323         struct rectangle allocation;
 324         cairo_text_extents_t extents;
 325         cairo_font_extents_t font_extents;
 326         time_t rawtime;
 327         struct tm * timeinfo;
 328         char string[128];
 329
 330         time(&rawtime);
 331         timeinfo = localtime(&rawtime);
 332         strftime(string, sizeof string, "%a %b %d, %I:%M %p", timeinfo);
 333
 334         widget_get_allocation(widget, &allocation);
 335         if (allocation.width == 0)
 336                 return;
 337
 338         surface = window_get_surface(clock->panel->window);
 339         cr = cairo_create(surface);
 340         cairo_select_font_face(cr, "sans",
 341                                CAIRO_FONT_SLANT_NORMAL,
 342                                CAIRO_FONT_WEIGHT_NORMAL);
 343         cairo_set_font_size(cr, 14);
 344         cairo_text_extents(cr, string, &extents);
 345         cairo_font_extents (cr, &font_extents);
 346         cairo_move_to(cr, allocation.x + 5,
 347                       allocation.y + 3 * (allocation.height >> 2) + 1);
 348         cairo_set_source_rgb(cr, 0, 0, 0);
 349         cairo_show_text(cr, string);
 350         cairo_move_to(cr, allocation.x + 4,
 351                       allocation.y + 3 * (allocation.height >> 2));
 352         cairo_set_source_rgb(cr, 1, 1, 1);
 353         cairo_show_text(cr, string);
 354         cairo_destroy(cr);
 355 }
 356
 357 static int
 358 clock_timer_reset(struct panel_clock *clock)
 359 {
 360         struct itimerspec its;
 361
 362         its.it_interval.tv_sec = 60;
 363         its.it_interval.tv_nsec = 0;
 364         its.it_value.tv_sec = 60;
 365         its.it_value.tv_nsec = 0;
 366         if (timerfd_settime(clock->clock_fd, 0, &its, NULL) < 0) {
 367                 fprintf(stderr, "could not set timerfd\n: %m");
 368                 return -1;
 369         }
 370
 371         return 0;
 372 }
 373
 374 static void
 375 panel_destroy_clock(struct panel_clock *clock)
 376 {
 377         widget_destroy(clock->widget);
 378
 379         close(clock->clock_fd);
 380
 381         free(clock);
 382 }
 383
 384 static void
 385 panel_add_clock(struct panel *panel)
 386 {
 387         struct panel_clock *clock;
 388         int timerfd;
 389
 390         timerfd = timerfd_create(CLOCK_MONOTONIC, TFD_CLOEXEC);
 391         if (timerfd < 0) {
 392                 fprintf(stderr, "could not create timerfd\n: %m");
 393                 return;
 394         }
 395
 396         clock = malloc(sizeof *clock);
 397         memset(clock, 0, sizeof *clock);
 398         clock->panel = panel;
 399         panel->clock = clock;
 400         clock->clock_fd = timerfd;
 401
 402         clock->clock_task.run = clock_func;
 403         display_watch_fd(window_get_display(panel->window), clock->clock_fd,
 404                          EPOLLIN, &clock->clock_task);
 405         clock_timer_reset(clock);
 406
 407         clock->widget = widget_add_widget(panel->widget, clock);
 408         widget_set_redraw_handler(clock->widget, panel_clock_redraw_handler);
 409 }
 410
 411 static void
 412 panel_button_handler(struct widget *widget,
 413                      struct input *input, uint32_t time,
 414                      uint32_t button,
 415                      enum wl_pointer_button_state state, void *data)
 416 {
 417         struct panel *panel = data;
 418
 419         if (button == BTN_RIGHT && state == WL_POINTER_BUTTON_STATE_PRESSED)
 420                 show_menu(panel, input, time);
 421 }
 422
 423 static void
 424 panel_resize_handler(struct widget *widget,
 425                      int32_t width, int32_t height, void *data)
 426 {
 427         struct panel_launcher *launcher;
 428         struct panel *panel = data;
 429         int x, y, w, h;
 430
 431         x = 10;
 432         y = 16;
 433         wl_list_for_each(launcher, &panel->launcher_list, link) {
 434                 w = cairo_image_surface_get_width(launcher->icon);
 435                 h = cairo_image_surface_get_height(launcher->icon);
 436                 widget_set_allocation(launcher->widget,
 437                                       x, y - h / 2, w + 1, h + 1);
 438                 x += w + 10;
 439         }
 440         h=20;
 441         w=170;
 442
 443         if (panel->clock)
 444                 widget_set_allocation(panel->clock->widget,
 445                                       width - w - 8, y - h / 2, w + 1, h + 1);
 446 }
 447
 448 static void
 449 panel_configure(void *data,
 450                 struct desktop_shell *desktop_shell,
 451                 uint32_t edges, struct window *window,
 452                 int32_t width, int32_t height)
 453 {
 454         struct surface *surface = window_get_user_data(window);
 455         struct panel *panel = container_of(surface, struct panel, base);
 456
 457         window_schedule_resize(panel->window, width, 32);
 458 }
 459
 460 static void
 461 panel_destroy_launcher(struct panel_launcher *launcher)
 462 {
 463         wl_array_release(&launcher->argv);
 464         wl_array_release(&launcher->envp);
 465
 466         free(launcher->path);
 467
 468         cairo_surface_destroy(launcher->icon);
 469
 470         widget_destroy(launcher->widget);
 471         wl_list_remove(&launcher->link);
 472
 473         free(launcher);
 474 }
 475
 476 static void
 477 panel_destroy(struct panel *panel)
 478 {
 479         struct panel_launcher *tmp;
 480         struct panel_launcher *launcher;
 481
 482         panel_destroy_clock(panel->clock);
 483
 484         wl_list_for_each_safe(launcher, tmp, &panel->launcher_list, link)
 485                 panel_destroy_launcher(launcher);
 486
 487         widget_destroy(panel->widget);
 488         window_destroy(panel->window);
 489
 490         free(panel);
 491 }
 492
 493 static struct panel *
 494 panel_create(struct display *display)
 495 {
 496         struct panel *panel;
 497
 498         panel = malloc(sizeof *panel);
 499         memset(panel, 0, sizeof *panel);
 500
 501         panel->base.configure = panel_configure;
 502         panel->window = window_create_custom(display);
 503         panel->widget = window_add_widget(panel->window, panel);
 504         wl_list_init(&panel->launcher_list);
 505
 506         window_set_title(panel->window, "panel");
 507         window_set_user_data(panel->window, panel);
 508
 509         widget_set_redraw_handler(panel->widget, panel_redraw_handler);
 510         widget_set_resize_handler(panel->widget, panel_resize_handler);
 511         widget_set_button_handler(panel->widget, panel_button_handler);
 512
 513         panel_add_clock(panel);
 514
 515         return panel;
 516 }
 517
 518 static cairo_surface_t *
 519 load_icon_or_fallback(const char *icon)
 520 {
 521         cairo_surface_t *surface = cairo_image_surface_create_from_png(icon);
 522         cairo_t *cr;
 523
 524         if (cairo_surface_status(surface) == CAIRO_STATUS_SUCCESS)
 525                 return surface;
 526
 527         cairo_surface_destroy(surface);
 528         fprintf(stderr, "ERROR loading icon from file '%s'\n", icon);
 529
 530         /* draw fallback icon */
 531         surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
 532                                              20, 20);
 533         cr = cairo_create(surface);
 534
 535         cairo_set_source_rgba(cr, 0.8, 0.8, 0.8, 1);
 536         cairo_paint(cr);
 537
 538         cairo_set_source_rgba(cr, 0, 0, 0, 1);
 539         cairo_set_line_cap(cr, CAIRO_LINE_CAP_ROUND);
 540         cairo_rectangle(cr, 0, 0, 20, 20);
 541         cairo_move_to(cr, 4, 4);
 542         cairo_line_to(cr, 16, 16);
 543         cairo_move_to(cr, 4, 16);
 544         cairo_line_to(cr, 16, 4);
 545         cairo_stroke(cr);
 546
 547         cairo_destroy(cr);
 548
 549         return surface;
 550 }
 551
 552 static void
 553 panel_add_launcher(struct panel *panel, const char *icon, const char *path)
 554 {
 555         struct panel_launcher *launcher;
 556         char *start, *p, *eq, **ps;
 557         int i, j, k;
 558
 559         launcher = malloc(sizeof *launcher);
 560         memset(launcher, 0, sizeof *launcher);
 561         launcher->icon = load_icon_or_fallback(icon);
 562         launcher->path = strdup(path);
 563
 564         wl_array_init(&launcher->envp);
 565         wl_array_init(&launcher->argv);
 566         for (i = 0; environ[i]; i++) {
 567                 ps = wl_array_add(&launcher->envp, sizeof *ps);
 568                 *ps = environ[i];
 569         }
 570         j = 0;
 571
 572         start = launcher->path;
 573         while (*start) {
 574                 for (p = start, eq = NULL; *p && !isspace(*p); p++)
 575                         if (*p == '=')
 576                                 eq = p;
 577
 578                 if (eq && j == 0) {
 579                         ps = launcher->envp.data;
 580                         for (k = 0; k < i; k++)
 581                                 if (strncmp(ps[k], start, eq - start) == 0) {
 582                                         ps[k] = start;
 583                                         break;
 584                                 }
 585                         if (k == i) {
 586                                 ps = wl_array_add(&launcher->envp, sizeof *ps);
 587                                 *ps = start;
 588                                 i++;
 589                         }
 590                 } else {
 591                         ps = wl_array_add(&launcher->argv, sizeof *ps);
 592                         *ps = start;
 593                         j++;
 594                 }
 595
 596                 while (*p && isspace(*p))
 597                         *p++ = '\0';
 598
 599                 start = p;
 600         }
 601
 602         ps = wl_array_add(&launcher->envp, sizeof *ps);
 603         *ps = NULL;
 604         ps = wl_array_add(&launcher->argv, sizeof *ps);
 605         *ps = NULL;
 606
 607         launcher->panel = panel;
 608         wl_list_insert(panel->launcher_list.prev, &launcher->link);
 609
 610         launcher->widget = widget_add_widget(panel->widget, launcher);
 611         widget_set_enter_handler(launcher->widget,
 612                                  panel_launcher_enter_handler);
 613         widget_set_leave_handler(launcher->widget,
 614                                    panel_launcher_leave_handler);
 615         widget_set_button_handler(launcher->widget,
 616                                     panel_launcher_button_handler);
 617         widget_set_redraw_handler(launcher->widget,
 618                                   panel_launcher_redraw_handler);
 619         widget_set_motion_handler(launcher->widget,
 620                                   panel_launcher_motion_handler);
 621 }
 622
 623 enum {
 624         BACKGROUND_SCALE,
 625         BACKGROUND_TILE
 626 };
 627
 628 static void
 629 background_draw(struct widget *widget, void *data)
 630 {
 631         struct background *background = data;
 632         cairo_surface_t *surface, *image;
 633         cairo_pattern_t *pattern;
 634         cairo_matrix_t matrix;
 635         cairo_t *cr;
 636         double sx, sy;
 637         struct rectangle allocation;
 638         int type = -1;
 639
 640         surface = window_get_surface(background->window);
 641
 642         cr = cairo_create(surface);
 643         cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
 644         cairo_set_source_rgba(cr, 0.0, 0.0, 0.2, 1.0);
 645         cairo_paint(cr);
 646
 647         widget_get_allocation(widget, &allocation);
 648         image = NULL;
 649         if (key_background_image)
 650                 image = load_cairo_surface(key_background_image);
 651
 652         if (strcmp(key_background_type, "scale") == 0)
 653                 type = BACKGROUND_SCALE;
 654         else if (strcmp(key_background_type, "tile") == 0)
 655                 type = BACKGROUND_TILE;
 656         else
 657                 fprintf(stderr, "invalid background-type: %s\n",
 658                         key_background_type);
 659
 660         if (image && type != -1) {
 661                 pattern = cairo_pattern_create_for_surface(image);
 662                 switch (type) {
 663                 case BACKGROUND_SCALE:
 664                         sx = (double) cairo_image_surface_get_width(image) /
 665                                 allocation.width;
 666                         sy = (double) cairo_image_surface_get_height(image) /
 667                                 allocation.height;
 668                         cairo_matrix_init_scale(&matrix, sx, sy);
 669                         cairo_pattern_set_matrix(pattern, &matrix);
 670                         break;
 671                 case BACKGROUND_TILE:
 672                         cairo_pattern_set_extend(pattern, CAIRO_EXTEND_REPEAT);
 673                         break;
 674                 }
 675                 cairo_set_source(cr, pattern);
 676                 cairo_pattern_destroy (pattern);
 677                 cairo_surface_destroy(image);
 678         } else {
 679                 set_hex_color(cr, key_background_color);
 680         }
 681
 682         cairo_paint(cr);
 683         cairo_destroy(cr);
 684         cairo_surface_destroy(surface);
 685 }
 686
 687 static void
 688 background_configure(void *data,
 689                      struct desktop_shell *desktop_shell,
 690                      uint32_t edges, struct window *window,
 691                      int32_t width, int32_t height)
 692 {
 693         struct background *background =
 694                 (struct background *) window_get_user_data(window);
 695
 696         widget_schedule_resize(background->widget, width, height);
 697 }
 698
 699 static void
 700 unlock_dialog_redraw_handler(struct widget *widget, void *data)
 701 {
 702         struct unlock_dialog *dialog = data;
 703         struct rectangle allocation;
 704         cairo_t *cr;
 705         cairo_surface_t *surface;
 706         cairo_pattern_t *pat;
 707         double cx, cy, r, f;
 708
 709         surface = window_get_surface(dialog->window);
 710         cr = cairo_create(surface);
 711
 712         widget_get_allocation(dialog->widget, &allocation);
 713         cairo_rectangle(cr, allocation.x, allocation.y,
 714                         allocation.width, allocation.height);
 715         cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
 716         cairo_set_source_rgba(cr, 0, 0, 0, 0.6);
 717         cairo_fill(cr);
 718
 719         cairo_translate(cr, allocation.x, allocation.y);
 720         if (dialog->button_focused)
 721                 f = 1.0;
 722         else
 723                 f = 0.7;
 724
 725         cx = allocation.width / 2.0;
 726         cy = allocation.height / 2.0;
 727         r = (cx < cy ? cx : cy) * 0.4;
 728         pat = cairo_pattern_create_radial(cx, cy, r * 0.7, cx, cy, r);
 729         cairo_pattern_add_color_stop_rgb(pat, 0.0, 0, 0.86 * f, 0);
 730         cairo_pattern_add_color_stop_rgb(pat, 0.85, 0.2 * f, f, 0.2 * f);
 731         cairo_pattern_add_color_stop_rgb(pat, 1.0, 0, 0.86 * f, 0);
 732         cairo_set_source(cr, pat);
 733         cairo_pattern_destroy(pat);
 734         cairo_arc(cr, cx, cy, r, 0.0, 2.0 * M_PI);
 735         cairo_fill(cr);
 736
 737         widget_set_allocation(dialog->button,
 738                               allocation.x + cx - r,
 739                               allocation.y + cy - r, 2 * r, 2 * r);
 740
 741         cairo_destroy(cr);
 742
 743         cairo_surface_destroy(surface);
 744 }
 745
 746 static void
 747 unlock_dialog_button_handler(struct widget *widget,
 748                              struct input *input, uint32_t time,
 749                              uint32_t button,
 750                              enum wl_pointer_button_state state, void *data)
 751 {
 752         struct unlock_dialog *dialog = data;
 753         struct desktop *desktop = dialog->desktop;
 754
 755         if (button == BTN_LEFT) {
 756                 if (state == WL_POINTER_BUTTON_STATE_RELEASED &&
 757                     !dialog->closing) {
 758                         display_defer(desktop->display, &desktop->unlock_task);
 759                         dialog->closing = 1;
 760                 }
 761         }
 762 }
 763
 764 static void
 765 unlock_dialog_keyboard_focus_handler(struct window *window,
 766                                      struct input *device, void *data)
 767 {
 768         window_schedule_redraw(window);
 769 }
 770
 771 static int
 772 unlock_dialog_widget_enter_handler(struct widget *widget,
 773                                    struct input *input,
 774                                    float x, float y, void *data)
 775 {
 776         struct unlock_dialog *dialog = data;
 777
 778         dialog->button_focused = 1;
 779         widget_schedule_redraw(widget);
 780
 781         return CURSOR_LEFT_PTR;
 782 }
 783
 784 static void
 785 unlock_dialog_widget_leave_handler(struct widget *widget,
 786                                    struct input *input, void *data)
 787 {
 788         struct unlock_dialog *dialog = data;
 789
 790         dialog->button_focused = 0;
 791         widget_schedule_redraw(widget);
 792 }
 793
 794 static struct unlock_dialog *
 795 unlock_dialog_create(struct desktop *desktop)
 796 {
 797         struct display *display = desktop->display;
 798         struct unlock_dialog *dialog;
 799
 800         dialog = malloc(sizeof *dialog);
 801         if (!dialog)
 802                 return NULL;
 803         memset(dialog, 0, sizeof *dialog);
 804
 805         dialog->window = window_create_custom(display);
 806         dialog->widget = frame_create(dialog->window, dialog);
 807         window_set_title(dialog->window, "Unlock your desktop");
 808
 809         window_set_user_data(dialog->window, dialog);
 810         window_set_keyboard_focus_handler(dialog->window,
 811                                           unlock_dialog_keyboard_focus_handler);
 812         dialog->button = widget_add_widget(dialog->widget, dialog);
 813         widget_set_redraw_handler(dialog->widget,
 814                                   unlock_dialog_redraw_handler);
 815         widget_set_enter_handler(dialog->button,
 816                                  unlock_dialog_widget_enter_handler);
 817         widget_set_leave_handler(dialog->button,
 818                                  unlock_dialog_widget_leave_handler);
 819         widget_set_button_handler(dialog->button,
 820                                   unlock_dialog_button_handler);
 821
 822         desktop_shell_set_lock_surface(desktop->shell,
 823                                        window_get_wl_surface(dialog->window));
 824
 825         window_schedule_resize(dialog->window, 260, 230);
 826
 827         return dialog;
 828 }
 829
 830 static void
 831 unlock_dialog_destroy(struct unlock_dialog *dialog)
 832 {
 833         window_destroy(dialog->window);
 834         free(dialog);
 835 }
 836
 837 static void
 838 unlock_dialog_finish(struct task *task, uint32_t events)
 839 {
 840         struct desktop *desktop =
 841                 container_of(task, struct desktop, unlock_task);
 842
 843         desktop_shell_unlock(desktop->shell);
 844         unlock_dialog_destroy(desktop->unlock_dialog);
 845         desktop->unlock_dialog = NULL;
 846 }
 847
 848 static void
 849 desktop_shell_configure(void *data,
 850                         struct desktop_shell *desktop_shell,
 851                         uint32_t edges,
 852                         struct wl_surface *surface,
 853                         int32_t width, int32_t height)
 854 {
 855         struct window *window = wl_surface_get_user_data(surface);
 856         struct surface *s = window_get_user_data(window);
 857
 858         s->configure(data, desktop_shell, edges, window, width, height);
 859 }
 860
 861 static void
 862 desktop_shell_prepare_lock_surface(void *data,
 863                                    struct desktop_shell *desktop_shell)
 864 {
 865         struct desktop *desktop = data;
 866
 867         if (!key_locking) {
 868                 desktop_shell_unlock(desktop->shell);
 869                 return;
 870         }
 871
 872         if (!desktop->unlock_dialog) {
 873                 desktop->unlock_dialog = unlock_dialog_create(desktop);
 874                 desktop->unlock_dialog->desktop = desktop;
 875         }
 876 }
 877
 878 static void
 879 desktop_shell_grab_cursor(void *data,
 880                           struct desktop_shell *desktop_shell,
 881                           uint32_t cursor)
 882 {
 883         struct desktop *desktop = data;
 884
 885         switch (cursor) {
 886         case DESKTOP_SHELL_CURSOR_NONE:
 887                 desktop->grab_cursor = CURSOR_BLANK;
 888                 break;
 889         case DESKTOP_SHELL_CURSOR_BUSY:
 890                 desktop->grab_cursor = CURSOR_WATCH;
 891                 break;
 892         case DESKTOP_SHELL_CURSOR_MOVE:
 893                 desktop->grab_cursor = CURSOR_DRAGGING;
 894                 break;
 895         case DESKTOP_SHELL_CURSOR_RESIZE_TOP:
 896                 desktop->grab_cursor = CURSOR_TOP;
 897                 break;
 898         case DESKTOP_SHELL_CURSOR_RESIZE_BOTTOM:
 899                 desktop->grab_cursor = CURSOR_BOTTOM;
 900                 break;
 901         case DESKTOP_SHELL_CURSOR_RESIZE_LEFT:
 902                 desktop->grab_cursor = CURSOR_LEFT;
 903                 break;
 904         case DESKTOP_SHELL_CURSOR_RESIZE_RIGHT:
 905                 desktop->grab_cursor = CURSOR_RIGHT;
 906                 break;
 907         case DESKTOP_SHELL_CURSOR_RESIZE_TOP_LEFT:
 908                 desktop->grab_cursor = CURSOR_TOP_LEFT;
 909                 break;
 910         case DESKTOP_SHELL_CURSOR_RESIZE_TOP_RIGHT:
 911                 desktop->grab_cursor = CURSOR_TOP_RIGHT;
 912                 break;
 913         case DESKTOP_SHELL_CURSOR_RESIZE_BOTTOM_LEFT:
 914                 desktop->grab_cursor = CURSOR_BOTTOM_LEFT;
 915                 break;
 916         case DESKTOP_SHELL_CURSOR_RESIZE_BOTTOM_RIGHT:
 917                 desktop->grab_cursor = CURSOR_BOTTOM_RIGHT;
 918                 break;
 919         case DESKTOP_SHELL_CURSOR_ARROW:
 920         default:
 921                 desktop->grab_cursor = CURSOR_LEFT_PTR;
 922         }
 923 }
 924
 925 static const struct desktop_shell_listener listener = {
 926         desktop_shell_configure,
 927         desktop_shell_prepare_lock_surface,
 928         desktop_shell_grab_cursor
 929 };
 930
 931 static void
 932 background_destroy(struct background *background)
 933 {
 934         widget_destroy(background->widget);
 935         window_destroy(background->window);
 936
 937         free(background);
 938 }
 939
 940 static struct background *
 941 background_create(struct desktop *desktop)
 942 {
 943         struct background *background;
 944
 945         background = malloc(sizeof *background);
 946         memset(background, 0, sizeof *background);
 947
 948         background->base.configure = background_configure;
 949         background->window = window_create_custom(desktop->display);
 950         background->widget = window_add_widget(background->window, background);
 951         window_set_user_data(background->window, background);
 952         widget_set_redraw_handler(background->widget, background_draw);
 953
 954         return background;
 955 }
 956
 957 static int
 958 grab_surface_enter_handler(struct widget *widget, struct input *input,
 959                            float x, float y, void *data)
 960 {
 961         struct desktop *desktop = data;
 962
 963         return desktop->grab_cursor;
 964 }
 965
 966 static void
 967 grab_surface_destroy(struct desktop *desktop)
 968 {
 969         widget_destroy(desktop->grab_widget);
 970         window_destroy(desktop->grab_window);
 971 }
 972
 973 static void
 974 grab_surface_create(struct desktop *desktop)
 975 {
 976         struct wl_surface *s;
 977
 978         desktop->grab_window = window_create_custom(desktop->display);
 979         window_set_user_data(desktop->grab_window, desktop);
 980
 981         s = window_get_wl_surface(desktop->grab_window);
 982         desktop_shell_set_grab_surface(desktop->shell, s);
 983
 984         desktop->grab_widget =
 985                 window_add_widget(desktop->grab_window, desktop);
 986         /* We set the allocation to 1x1 at 0,0 so the fake enter event
 987          * at 0,0 will go to this widget. */
 988         widget_set_allocation(desktop->grab_widget, 0, 0, 1, 1);
 989
 990         widget_set_enter_handler(desktop->grab_widget,
 991                                  grab_surface_enter_handler);
 992 }
 993
 994 static void
 995 output_destroy(struct output *output)
 996 {
 997         background_destroy(output->background);
 998         panel_destroy(output->panel);
 999         wl_output_destroy(output->output);
1000         wl_list_remove(&output->link);
1001
1002         free(output);
1003 }
1004
1005 static void
1006 desktop_destroy_outputs(struct desktop *desktop)
1007 {
1008         struct output *tmp;
1009         struct output *output;
1010
1011         wl_list_for_each_safe(output, tmp, &desktop->outputs, link)
1012                 output_destroy(output);
1013 }
1014
1015 static void
1016 create_output(struct desktop *desktop, uint32_t id)
1017 {
1018         struct output *output;
1019
1020         output = calloc(1, sizeof *output);
1021         if (!output)
1022                 return;
1023
1024         output->output =
1025                 display_bind(desktop->display, id, &wl_output_interface, 1);
1026
1027         wl_list_insert(&desktop->outputs, &output->link);
1028 }
1029
1030 static void
1031 global_handler(struct display *display, uint32_t id,
1032                const char *interface, uint32_t version, void *data)
1033 {
1034         struct desktop *desktop = data;
1035
1036         if (!strcmp(interface, "desktop_shell")) {
1037                 desktop->shell = display_bind(desktop->display,
1038                                               id, &desktop_shell_interface, 1);
1039                 desktop_shell_add_listener(desktop->shell, &listener, desktop);
1040         } else if (!strcmp(interface, "wl_output")) {
1041                 create_output(desktop, id);
1042         }
1043 }
1044
1045 static void
1046 launcher_section_done(void *data)
1047 {
1048         struct desktop *desktop = data;
1049         struct output *output;
1050
1051         if (key_launcher_icon == NULL || key_launcher_path == NULL) {
1052                 fprintf(stderr, "invalid launcher section\n");
1053                 return;
1054         }
1055
1056         wl_list_for_each(output, &desktop->outputs, link) {
1057                 panel_add_launcher(output->panel,
1058                                    key_launcher_icon, key_launcher_path);
1059         }
1060
1061         free(key_launcher_icon);
1062         key_launcher_icon = NULL;
1063         free(key_launcher_path);
1064         key_launcher_path = NULL;
1065 }
1066
1067 static void
1068 add_default_launcher(struct desktop *desktop)
1069 {
1070         struct output *output;
1071
1072         wl_list_for_each(output, &desktop->outputs, link)
1073                 panel_add_launcher(output->panel,
1074                                    DATADIR "/weston/terminal.png",
1075                                    BINDIR "/weston-terminal");
1076 }
1077
1078 int main(int argc, char *argv[])
1079 {
1080         struct desktop desktop = { 0 };
1081         char *config_file;
1082         struct output *output;
1083         int ret;
1084
1085         desktop.unlock_task.run = unlock_dialog_finish;
1086         wl_list_init(&desktop.outputs);
1087
1088         desktop.display = display_create(argc, argv);
1089         if (desktop.display == NULL) {
1090                 fprintf(stderr, "failed to create display: %m\n");
1091                 return -1;
1092         }
1093
1094         display_set_user_data(desktop.display, &desktop);
1095         display_set_global_handler(desktop.display, global_handler);
1096
1097         wl_list_for_each(output, &desktop.outputs, link) {
1098                 struct wl_surface *surface;
1099
1100                 output->panel = panel_create(desktop.display);
1101                 surface = window_get_wl_surface(output->panel->window);
1102                 desktop_shell_set_panel(desktop.shell,
1103                                         output->output, surface);
1104
1105                 output->background = background_create(&desktop);
1106                 surface = window_get_wl_surface(output->background->window);
1107                 desktop_shell_set_background(desktop.shell,
1108                                              output->output, surface);
1109         }
1110
1111         grab_surface_create(&desktop);
1112
1113         config_file = config_file_path("weston.ini");
1114         ret = parse_config_file(config_file,
1115                                 config_sections, ARRAY_LENGTH(config_sections),
1116                                 &desktop);
1117         free(config_file);
1118         if (ret < 0)
1119                 add_default_launcher(&desktop);
1120
1121         signal(SIGCHLD, sigchild_handler);
1122
1123         display_run(desktop.display);
1124
1125         /* Cleanup */
1126         grab_surface_destroy(&desktop);
1127         desktop_destroy_outputs(&desktop);
1128         if (desktop.unlock_dialog)
1129                 unlock_dialog_destroy(desktop.unlock_dialog);
1130         desktop_shell_destroy(desktop.shell);
1131         display_destroy(desktop.display);
1132
1133         return 0;
1134 }