Dogcows Code - chaz/tint2/blob - src/tint.c

   1 /**************************************************************************
   2 *
   3 * Tint2 panel
   4 *
   5 * Copyright (C) 2007 Pål Staurland (staura@gmail.com)
   6 * Modified (C) 2008 thierry lorthiois (lorthiois@bbsoft.fr) from Omega distribution
   7 *
   8 * This program is free software; you can redistribute it and/or
   9 * modify it under the terms of the GNU General Public License version 2
  10 * as published by the Free Software Foundation.
  11 *
  12 * This program is distributed in the hope that it will be useful,
  13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 * GNU General Public License for more details.
  16 * You should have received a copy of the GNU General Public License
  17 * along with this program; if not, write to the Free Software
  18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  19 **************************************************************************/
  20
  21 #include <sys/stat.h>
  22 #include <unistd.h>
  23 #include <stdio.h>
  24 #include <stdlib.h>
  25 #include <stdint.h>
  26 #include <string.h>
  27 #include <X11/Xutil.h>
  28 #include <X11/Xatom.h>
  29 #include <X11/Xlocale.h>
  30 #include <X11/extensions/Xdamage.h>
  31 #include <Imlib2.h>
  32 #include <signal.h>
  33
  34 #ifdef HAVE_SN
  35 #include <libsn/sn.h>
  36 #include <sys/wait.h>
  37 #endif
  38
  39 #include <version.h>
  40 #include "server.h"
  41 #include "window.h"
  42 #include "config.h"
  43 #include "task.h"
  44 #include "taskbar.h"
  45 #include "systraybar.h"
  46 #include "launcher.h"
  47 #include "panel.h"
  48 #include "tooltip.h"
  49 #include "timer.h"
  50 #include "xsettings-client.h"
  51
  52 // Drag and Drop state variables
  53 Window dnd_source_window;
  54 Window dnd_target_window;
  55 int dnd_version;
  56 Atom dnd_selection;
  57 Atom dnd_atom;
  58 int dnd_sent_request;
  59 char *dnd_launcher_exec;
  60
  61 void signal_handler(int sig)
  62 {
  63         // signal handler is light as it should be
  64         signal_pending = sig;
  65 }
  66
  67
  68 void init (int argc, char *argv[])
  69 {
  70         int i;
  71
  72         // set global data
  73         default_config();
  74         default_timeout();
  75         default_systray();
  76         memset(&server, 0, sizeof(Server_global));
  77 #ifdef ENABLE_BATTERY
  78         default_battery();
  79 #endif
  80         default_clock();
  81         default_launcher();
  82         default_taskbar();
  83         default_tooltip();
  84         default_panel();
  85
  86         // read options
  87         for (i = 1; i < argc; ++i) {
  88                 if (!strcmp(argv[i], "-h") || !strcmp(argv[i], "--help"))       {
  89                         printf("Usage: tint2 [-c] <config_file>\n");
  90                         exit(0);
  91                 }
  92                 if (!strcmp(argv[i], "-v") || !strcmp(argv[i], "--version"))    {
  93                         printf("tint2 version %s\n", VERSION_STRING);
  94                         exit(0);
  95                 }
  96                 if (!strcmp(argv[i], "-c")) {
  97                         i++;
  98                         if (i < argc)
  99                                 config_path = strdup(argv[i]);
 100                 }
 101                 if (!strcmp(argv[i], "-s"))     {
 102                         i++;
 103                         if (i < argc)
 104                                 snapshot_path = strdup(argv[i]);
 105                 }
 106         }
 107         // Set signal handler
 108         signal_pending = 0;
 109         struct sigaction sa = { .sa_handler = signal_handler };
 110         struct sigaction sa_chld = { .sa_handler = SIG_DFL, .sa_flags = SA_NOCLDWAIT };
 111         sigaction(SIGUSR1, &sa, 0);
 112         sigaction(SIGINT, &sa, 0);
 113         sigaction(SIGTERM, &sa, 0);
 114         sigaction(SIGHUP, &sa, 0);
 115         sigaction(SIGCHLD, &sa_chld, 0);
 116
 117         // BSD does not support pselect(), therefore we have to use select and hope that we do not
 118         // end up in a race condition there (see 'man select()' on a linux machine for more information)
 119         // block all signals, such that no race conditions occur before pselect in our main loop
 120 //      sigset_t block_mask;
 121 //      sigaddset(&block_mask, SIGINT);
 122 //      sigaddset(&block_mask, SIGTERM);
 123 //      sigaddset(&block_mask, SIGHUP);
 124 //      sigaddset(&block_mask, SIGUSR1);
 125 //      sigprocmask(SIG_BLOCK, &block_mask, 0);
 126 }
 127
 128 #ifdef HAVE_SN
 129 static int error_trap_depth = 0;
 130
 131 static void
 132 error_trap_push (SnDisplay *display,
 133                  Display   *xdisplay)
 134 {
 135         ++error_trap_depth;
 136 }
 137
 138 static void
 139 error_trap_pop (SnDisplay *display,
 140                 Display   *xdisplay)
 141 {
 142         if (error_trap_depth == 0)
 143         {
 144                 fprintf(stderr, "Error trap underflow!\n");
 145                 return;
 146         }
 147
 148         XSync(xdisplay, False); /* get all errors out of the queue */
 149         --error_trap_depth;
 150 }
 151
 152 static void sigchld_handler(int sig) {
 153         // Wait for all dead processes
 154         pid_t pid;
 155         while ((pid = waitpid(-1, NULL, WNOHANG)) > 0) {
 156                 SnLauncherContext *ctx;
 157                 ctx = (SnLauncherContext *) g_tree_lookup (server.pids, GINT_TO_POINTER (pid));
 158                 if (ctx == NULL) {
 159                         fprintf(stderr, "Unknown child %d terminated!\n", pid);
 160                 }
 161                 else {
 162                         g_tree_remove (server.pids, GINT_TO_POINTER (pid));
 163                         sn_launcher_context_complete (ctx);
 164                         sn_launcher_context_unref (ctx);
 165                 }
 166         }
 167 }
 168
 169 static gint cmp_ptr(gconstpointer a, gconstpointer b) {
 170         if (a < b)
 171           return -1;
 172         else if (a == b)
 173           return 0;
 174         else
 175           return 1;
 176 }
 177
 178 #endif // HAVE_SN
 179
 180 void init_X11()
 181 {
 182         server.dsp = XOpenDisplay (NULL);
 183         if (!server.dsp) {
 184                 fprintf(stderr, "tint2 exit : could not open display.\n");
 185                 exit(0);
 186         }
 187         server_init_atoms ();
 188         server.screen = DefaultScreen (server.dsp);
 189         server.root_win = RootWindow(server.dsp, server.screen);
 190         server.desktop = server_get_current_desktop ();
 191         server_init_visual();
 192         XSetErrorHandler ((XErrorHandler) server_catch_error);
 193
 194 #ifdef HAVE_SN
 195         // Initialize startup-notification
 196         server.sn_dsp = sn_display_new (server.dsp, error_trap_push, error_trap_pop);
 197         server.pids = g_tree_new (cmp_ptr);
 198         // Setup a handler for child termination
 199         struct sigaction act;
 200         memset (&act, 0, sizeof (struct sigaction));
 201         act.sa_handler = sigchld_handler;
 202         if (sigaction(SIGCHLD, &act, 0)) {
 203                 perror("sigaction");
 204         }
 205 #endif // HAVE_SN
 206
 207         imlib_context_set_display (server.dsp);
 208         imlib_context_set_visual (server.visual);
 209         imlib_context_set_colormap (server.colormap);
 210
 211         /* Catch events */
 212         XSelectInput (server.dsp, server.root_win, PropertyChangeMask|StructureNotifyMask);
 213
 214         setlocale (LC_ALL, "");
 215         // config file use '.' as decimal separator
 216         setlocale(LC_NUMERIC, "POSIX");
 217
 218         // load default icon
 219         gchar *path;
 220         const gchar * const *data_dirs;
 221         data_dirs = g_get_system_data_dirs ();
 222         int i;
 223         for (i = 0; data_dirs[i] != NULL; i++)  {
 224                 path = g_build_filename(data_dirs[i], "tint2", "default_icon.png", NULL);
 225                 if (g_file_test (path, G_FILE_TEST_EXISTS))
 226                         default_icon = imlib_load_image(path);
 227                 g_free(path);
 228         }
 229
 230         // get monitor and desktop config
 231         get_monitors();
 232         get_desktops();
 233 }
 234
 235
 236 void cleanup()
 237 {
 238         cleanup_systray();
 239         cleanup_tooltip();
 240         cleanup_clock();
 241         cleanup_launcher();
 242 #ifdef ENABLE_BATTERY
 243         cleanup_battery();
 244 #endif
 245         cleanup_panel();
 246         cleanup_config();
 247
 248         if (default_icon) {
 249                 imlib_context_set_image(default_icon);
 250                 imlib_free_image();
 251         }
 252         imlib_context_disconnect_display();
 253
 254         cleanup_server();
 255         cleanup_timeout();
 256         if (server.dsp) XCloseDisplay(server.dsp);
 257 }
 258
 259
 260 void get_snapshot(const char *path)
 261 {
 262         Panel *panel = &panel1[0];
 263
 264         if (panel->area.width > server.monitor[0].width)
 265                 panel->area.width = server.monitor[0].width;
 266
 267         panel->temp_pmap = XCreatePixmap(server.dsp, server.root_win, panel->area.width, panel->area.height, server.depth);
 268         rendering(panel);
 269
 270         Imlib_Image img = NULL;
 271         imlib_context_set_drawable(panel->temp_pmap);
 272         img = imlib_create_image_from_drawable(0, 0, 0, panel->area.width, panel->area.height, 0);
 273
 274         imlib_context_set_image(img);
 275         if (!panel_horizontal) {
 276                 // rotate 90° vertical panel
 277                 imlib_image_flip_horizontal();
 278                 imlib_image_flip_diagonal();
 279         }
 280         imlib_save_image(path);
 281         imlib_free_image();
 282 }
 283
 284
 285 void window_action (Task *tsk, int action)
 286 {
 287         if (!tsk) return;
 288         int desk;
 289         switch (action) {
 290                 case CLOSE:
 291                         set_close (tsk->win);
 292                         break;
 293                 case TOGGLE:
 294                         set_active(tsk->win);
 295                         break;
 296                 case ICONIFY:
 297                         XIconifyWindow (server.dsp, tsk->win, server.screen);
 298                         break;
 299                 case TOGGLE_ICONIFY:
 300                         if (task_active && tsk->win == task_active->win)
 301                                 XIconifyWindow (server.dsp, tsk->win, server.screen);
 302                         else
 303                                 set_active (tsk->win);
 304                         break;
 305                 case SHADE:
 306                         window_toggle_shade (tsk->win);
 307                         break;
 308                 case MAXIMIZE_RESTORE:
 309                         window_maximize_restore (tsk->win);
 310                         break;
 311                 case MAXIMIZE:
 312                         window_maximize_restore (tsk->win);
 313                         break;
 314                 case RESTORE:
 315                         window_maximize_restore (tsk->win);
 316                         break;
 317                 case DESKTOP_LEFT:
 318                         if ( tsk->desktop == 0 ) break;
 319                         desk = tsk->desktop - 1;
 320                         windows_set_desktop(tsk->win, desk);
 321                         if (desk == server.desktop)
 322                                 set_active(tsk->win);
 323                         break;
 324                 case DESKTOP_RIGHT:
 325                         if (tsk->desktop == server.nb_desktop ) break;
 326                         desk = tsk->desktop + 1;
 327                         windows_set_desktop(tsk->win, desk);
 328                         if (desk == server.desktop)
 329                                 set_active(tsk->win);
 330                         break;
 331                 case NEXT_TASK:
 332                         if (task_active) {
 333                                 Task *tsk1;
 334                                 tsk1 = next_task(task_active);
 335                                 set_active(tsk1->win);
 336                         }
 337                         break;
 338                 case PREV_TASK:
 339                         if (task_active) {
 340                                 Task *tsk1;
 341                                 tsk1 = prev_task(task_active);
 342                                 set_active(tsk1->win);
 343                         }
 344         }
 345 }
 346
 347
 348 int tint2_handles_click(Panel* panel, XButtonEvent* e)
 349 {
 350         Task* task = click_task(panel, e->x, e->y);
 351         if (task) {
 352                 if(   (e->button == 1)
 353                          || (e->button == 2 && mouse_middle != 0)
 354                          || (e->button == 3 && mouse_right != 0)
 355                          || (e->button == 4 && mouse_scroll_up != 0)
 356                          || (e->button == 5 && mouse_scroll_down !=0) )
 357                 {
 358                         return 1;
 359                 }
 360                 else
 361                         return 0;
 362         }
 363         LauncherIcon *icon = click_launcher_icon(panel, e->x, e->y);
 364         if (icon) {
 365                 if (e->button == 1) {
 366                         return 1;
 367                 } else {
 368                         return 0;
 369                 }
 370         }
 371         // no launcher/task clicked --> check if taskbar clicked
 372         Taskbar *tskbar = click_taskbar(panel, e->x, e->y);
 373         if (tskbar && e->button == 1 && panel_mode == MULTI_DESKTOP)
 374                 return 1;
 375         if (click_clock(panel, e->x, e->y)) {
 376                 if ( (e->button == 1 && clock_lclick_command) || (e->button == 3 && clock_rclick_command) )
 377                         return 1;
 378                 else
 379                         return 0;
 380         }
 381         return 0;
 382 }
 383
 384
 385 void forward_click(XEvent* e)
 386 {
 387         // forward the click to the desktop window (thanks conky)
 388         XUngrabPointer(server.dsp, e->xbutton.time);
 389         e->xbutton.window = server.root_win;
 390         // icewm doesn't open under the mouse.
 391         // and xfce doesn't open at all.
 392         e->xbutton.x = e->xbutton.x_root;
 393         e->xbutton.y = e->xbutton.y_root;
 394         //printf("**** %d, %d\n", e->xbutton.x, e->xbutton.y);
 395         //XSetInputFocus(server.dsp, e->xbutton.window, RevertToParent, e->xbutton.time);
 396         XSendEvent(server.dsp, e->xbutton.window, False, ButtonPressMask, e);
 397 }
 398
 399
 400 void event_button_press (XEvent *e)
 401 {
 402         Panel *panel = get_panel(e->xany.window);
 403         if (!panel) return;
 404
 405
 406         if (wm_menu && !tint2_handles_click(panel, &e->xbutton) ) {
 407                 forward_click(e);
 408                 return;
 409         }
 410         task_drag = click_task(panel, e->xbutton.x, e->xbutton.y);
 411
 412         if (panel_layer == BOTTOM_LAYER)
 413                 XLowerWindow (server.dsp, panel->main_win);
 414 }
 415
 416 void event_button_motion_notify (XEvent *e)
 417 {
 418         Panel * panel = get_panel(e->xany.window);
 419         if(!panel || !task_drag)
 420                 return;
 421
 422         // Find the taskbar on the event's location
 423         Taskbar * event_taskbar = click_taskbar(panel, e->xbutton.x, e->xbutton.y);
 424         if(event_taskbar == NULL)
 425                 return;
 426
 427         // Find the task on the event's location
 428         Task * event_task = click_task(panel, e->xbutton.x, e->xbutton.y);
 429
 430         // If the event takes place on the same taskbar as the task being dragged
 431         if(event_taskbar == task_drag->area.parent)     {
 432                 // Swap the task_drag with the task on the event's location (if they differ)
 433                 if(event_task && event_task != task_drag) {
 434                         GSList * drag_iter = g_slist_find(event_taskbar->area.list, task_drag);
 435                         GSList * task_iter = g_slist_find(event_taskbar->area.list, event_task);
 436                         if(drag_iter && task_iter) {
 437                                 gpointer temp = task_iter->data;
 438                                 task_iter->data = drag_iter->data;
 439                                 drag_iter->data = temp;
 440                                 event_taskbar->area.resize = 1;
 441                                 panel_refresh = 1;
 442                                 task_dragged = 1;
 443                         }
 444                 }
 445         }
 446         else { // The event is on another taskbar than the task being dragged
 447                 if(task_drag->desktop == ALLDESKTOP || panel_mode != MULTI_DESKTOP)
 448                         return;
 449
 450                 Taskbar * drag_taskbar = (Taskbar*)task_drag->area.parent;
 451                 drag_taskbar->area.list = g_slist_remove(drag_taskbar->area.list, task_drag);
 452
 453                 if(event_taskbar->area.posx > drag_taskbar->area.posx || event_taskbar->area.posy > drag_taskbar->area.posy) {
 454                         int i = (taskbarname_enabled) ? 1 : 0;
 455                         event_taskbar->area.list = g_slist_insert(event_taskbar->area.list, task_drag, i);
 456                 }
 457                 else
 458                         event_taskbar->area.list = g_slist_append(event_taskbar->area.list, task_drag);
 459
 460                 // Move task to other desktop (but avoid the 'Window desktop changed' code in 'event_property_notify')
 461                 task_drag->area.parent = event_taskbar;
 462                 task_drag->desktop = event_taskbar->desktop;
 463
 464                 windows_set_desktop(task_drag->win, event_taskbar->desktop);
 465
 466                 event_taskbar->area.resize = 1;
 467                 drag_taskbar->area.resize = 1;
 468                 task_dragged = 1;
 469                 panel_refresh = 1;
 470         }
 471 }
 472
 473 void event_button_release (XEvent *e)
 474 {
 475         Panel *panel = get_panel(e->xany.window);
 476         if (!panel) return;
 477
 478         if (wm_menu && !tint2_handles_click(panel, &e->xbutton)) {
 479                 forward_click(e);
 480                 if (panel_layer == BOTTOM_LAYER)
 481                         XLowerWindow (server.dsp, panel->main_win);
 482                 task_drag = 0;
 483                 return;
 484         }
 485
 486         int action = TOGGLE_ICONIFY;
 487         switch (e->xbutton.button) {
 488                 case 2:
 489                         action = mouse_middle;
 490                         break;
 491                 case 3:
 492                         action = mouse_right;
 493                         break;
 494                 case 4:
 495                         action = mouse_scroll_up;
 496                         break;
 497                 case 5:
 498                         action = mouse_scroll_down;
 499                         break;
 500                 case 6:
 501                         action = mouse_tilt_left;
 502                         break;
 503                 case 7:
 504                         action = mouse_tilt_right;
 505                         break;
 506         }
 507
 508         if ( click_clock(panel, e->xbutton.x, e->xbutton.y)) {
 509                 clock_action(e->xbutton.button);
 510                 if (panel_layer == BOTTOM_LAYER)
 511                         XLowerWindow (server.dsp, panel->main_win);
 512                 task_drag = 0;
 513                 return;
 514         }
 515
 516         if ( click_launcher(panel, e->xbutton.x, e->xbutton.y)) {
 517                 LauncherIcon *icon = click_launcher_icon(panel, e->xbutton.x, e->xbutton.y);
 518                 if (icon) {
 519                         launcher_action(icon, e);
 520                 }
 521                 task_drag = 0;
 522                 return;
 523         }
 524
 525         Taskbar *tskbar;
 526         if ( !(tskbar = click_taskbar(panel, e->xbutton.x, e->xbutton.y)) ) {
 527                 // TODO: check better solution to keep window below
 528                 if (panel_layer == BOTTOM_LAYER)
 529                         XLowerWindow (server.dsp, panel->main_win);
 530                 task_drag = 0;
 531                 return;
 532         }
 533
 534         // drag and drop task
 535         if (task_dragged) {
 536                 task_drag = 0;
 537                 task_dragged = 0;
 538                 return;
 539         }
 540
 541         // switch desktop
 542         if (panel_mode == MULTI_DESKTOP) {
 543                 if (tskbar->desktop != server.desktop && action != CLOSE && action != DESKTOP_LEFT && action != DESKTOP_RIGHT)
 544                         set_desktop (tskbar->desktop);
 545         }
 546
 547         // action on task
 548         window_action( click_task(panel, e->xbutton.x, e->xbutton.y), action);
 549
 550         // to keep window below
 551         if (panel_layer == BOTTOM_LAYER)
 552                 XLowerWindow (server.dsp, panel->main_win);
 553 }
 554
 555
 556 void event_property_notify (XEvent *e)
 557 {
 558         int i;
 559         Task *tsk;
 560         Window win = e->xproperty.window;
 561         Atom at = e->xproperty.atom;
 562
 563         if (xsettings_client)
 564                 xsettings_client_process_event(xsettings_client, e);
 565         if (win == server.root_win) {
 566                 if (!server.got_root_win) {
 567                         XSelectInput (server.dsp, server.root_win, PropertyChangeMask|StructureNotifyMask);
 568                         server.got_root_win = 1;
 569                 }
 570
 571                 // Change name of desktops
 572                 else if (at == server.atom._NET_DESKTOP_NAMES) {
 573                         if (!taskbarname_enabled) return;
 574                         GSList *l, *list = server_get_name_of_desktop();
 575                         int j;
 576                         gchar *name;
 577                         Taskbar *tskbar;
 578                         for (i=0 ; i < nb_panel ; i++) {
 579                                 for (j=0, l=list ; j < panel1[i].nb_desktop ; j++) {
 580                                         if (l) {
 581                                                 name = g_strdup(l->data);
 582                                                 l = l->next;
 583                                         }
 584                                         else
 585                                                 name = g_strdup_printf("%d", j+1);
 586                                         tskbar = &panel1[i].taskbar[j];
 587                                         if (strcmp(name, tskbar->bar_name.name) != 0) {
 588                                                 g_free(tskbar->bar_name.name);
 589                                                 tskbar->bar_name.name = name;
 590                                                 tskbar->bar_name.area.resize = 1;
 591                                         }
 592                                         else
 593                                                 g_free(name);
 594                                 }
 595                         }
 596                         for (l=list ; l ; l = l->next)
 597                                 g_free(l->data);
 598                         g_slist_free(list);
 599                         panel_refresh = 1;
 600                 }
 601                 // Change number of desktops
 602                 else if (at == server.atom._NET_NUMBER_OF_DESKTOPS) {
 603                         if (!taskbar_enabled) return;
 604                         server.nb_desktop = server_get_number_of_desktop ();
 605                         if (server.nb_desktop <= server.desktop) {
 606                                 server.desktop = server.nb_desktop-1;
 607                         }
 608                         cleanup_taskbar();
 609                         init_taskbar();
 610                         for (i=0 ; i < nb_panel ; i++) {
 611                                 init_taskbar_panel(&panel1[i]);
 612                                 set_panel_items_order(&panel1[i]);
 613                                 visible_taskbar(&panel1[i]);
 614                                 panel1[i].area.resize = 1;
 615                         }
 616                         task_refresh_tasklist();
 617                         active_task();
 618                         panel_refresh = 1;
 619                 }
 620                 // Change desktop
 621                 else if (at == server.atom._NET_CURRENT_DESKTOP) {
 622                         if (!taskbar_enabled) return;
 623                         int old_desktop = server.desktop;
 624                         server.desktop = server_get_current_desktop ();
 625                         for (i=0 ; i < nb_panel ; i++) {
 626                                 Panel *panel = &panel1[i];
 627                                 set_taskbar_state(&panel->taskbar[old_desktop], TASKBAR_NORMAL);
 628                                 set_taskbar_state(&panel->taskbar[server.desktop], TASKBAR_ACTIVE);
 629                                 // check ALLDESKTOP task => resize taskbar
 630                                 Taskbar *tskbar;
 631                                 Task *tsk;
 632                                 GSList *l;
 633                                 if (server.nb_desktop > old_desktop) {
 634                                         tskbar = &panel->taskbar[old_desktop];
 635                                         l = tskbar->area.list;
 636                                         if (taskbarname_enabled) l = l->next;
 637                                         for (; l ; l = l->next) {
 638                                                 tsk = l->data;
 639                                                 if (tsk->desktop == ALLDESKTOP) {
 640                                                         tsk->area.on_screen = 0;
 641                                                         tskbar->area.resize = 1;
 642                                                         panel_refresh = 1;
 643                                                 }
 644                                         }
 645                                 }
 646                                 tskbar = &panel->taskbar[server.desktop];
 647                                 l = tskbar->area.list;
 648                                 if (taskbarname_enabled) l = l->next;
 649                                 for (; l ; l = l->next) {
 650                                         tsk = l->data;
 651                                         if (tsk->desktop == ALLDESKTOP) {
 652                                                 tsk->area.on_screen = 1;
 653                                                 tskbar->area.resize = 1;
 654                                         }
 655                                 }
 656                         }
 657                 }
 658                 // Window list
 659                 else if (at == server.atom._NET_CLIENT_LIST) {
 660                         task_refresh_tasklist();
 661                         panel_refresh = 1;
 662                 }
 663                 // Change active
 664                 else if (at == server.atom._NET_ACTIVE_WINDOW) {
 665                         active_task();
 666                         panel_refresh = 1;
 667                 }
 668                 else if (at == server.atom._XROOTPMAP_ID || at == server.atom._XROOTMAP_ID) {
 669                         // change Wallpaper
 670                         for (i=0 ; i < nb_panel ; i++) {
 671                                 set_panel_background(&panel1[i]);
 672                         }
 673                         panel_refresh = 1;
 674                 }
 675         }
 676         else {
 677                 tsk = task_get_task (win);
 678                 if (!tsk) {
 679                         if (at != server.atom._NET_WM_STATE)
 680                                 return;
 681                         else {
 682                                 // xfce4 sends _NET_WM_STATE after minimized to tray, so we need to check if window is mapped
 683                                 // if it is mapped and not set as skip_taskbar, we must add it to our task list
 684                                 XWindowAttributes wa;
 685                                 XGetWindowAttributes(server.dsp, win, &wa);
 686                                 if (wa.map_state == IsViewable && !window_is_skip_taskbar(win)) {
 687                                         if ( (tsk = add_task(win)) )
 688                                                 panel_refresh = 1;
 689                                         else
 690                                                 return;
 691                                 }
 692                                 else
 693                                         return;
 694                         }
 695                 }
 696                 //printf("atom root_win = %s, %s\n", XGetAtomName(server.dsp, at), tsk->title);
 697
 698                 // Window title changed
 699                 if (at == server.atom._NET_WM_VISIBLE_NAME || at == server.atom._NET_WM_NAME || at == server.atom.WM_NAME) {
 700                         if (get_title(tsk)) {
 701                                 if (g_tooltip.mapped && (g_tooltip.area == (Area*)tsk)) {
 702                                         tooltip_copy_text((Area*)tsk);
 703                                         tooltip_update();
 704                                 }
 705                                 panel_refresh = 1;
 706                         }
 707                 }
 708                 // Demand attention
 709                 else if (at == server.atom._NET_WM_STATE) {
 710                         if (window_is_urgent (win)) {
 711                                 add_urgent(tsk);
 712                         }
 713                         if (window_is_skip_taskbar(win)) {
 714                                 remove_task( tsk );
 715                                 panel_refresh = 1;
 716                         }
 717                 }
 718                 else if (at == server.atom.WM_STATE) {
 719                         // Iconic state
 720                         int state = (task_active && tsk->win == task_active->win ? TASK_ACTIVE : TASK_NORMAL);
 721                         if (window_is_iconified(win))
 722                                 state = TASK_ICONIFIED;
 723                         set_task_state(tsk, state);
 724                         panel_refresh = 1;
 725                 }
 726                 // Window icon changed
 727                 else if (at == server.atom._NET_WM_ICON) {
 728                         get_icon(tsk);
 729                         panel_refresh = 1;
 730                 }
 731                 // Window desktop changed
 732                 else if (at == server.atom._NET_WM_DESKTOP) {
 733                         int desktop = window_get_desktop (win);
 734                         //printf("  Window desktop changed %d, %d\n", tsk->desktop, desktop);
 735                         // bug in windowmaker : send unecessary 'desktop changed' when focus changed
 736                         if (desktop != tsk->desktop) {
 737                                 remove_task (tsk);
 738                                 tsk = add_task (win);
 739                                 active_task();
 740                                 panel_refresh = 1;
 741                         }
 742                 }
 743                 else if (at == server.atom.WM_HINTS) {
 744                         XWMHints* wmhints = XGetWMHints(server.dsp, win);
 745                         if (wmhints && wmhints->flags & XUrgencyHint) {
 746                                 add_urgent(tsk);
 747                         }
 748                         XFree(wmhints);
 749                 }
 750
 751                 if (!server.got_root_win) server.root_win = RootWindow (server.dsp, server.screen);
 752         }
 753 }
 754
 755
 756 void event_expose (XEvent *e)
 757 {
 758         Panel *panel;
 759         panel = get_panel(e->xany.window);
 760         if (!panel) return;
 761         // TODO : one panel_refresh per panel ?
 762         panel_refresh = 1;
 763 }
 764
 765
 766 void event_configure_notify (Window win)
 767 {
 768         // change in root window (xrandr)
 769         if (win == server.root_win) {
 770                 signal_pending = SIGUSR1;
 771                 return;
 772         }
 773
 774         // 'win' is a trayer icon
 775         TrayWindow *traywin;
 776         GSList *l;
 777         for (l = systray.list_icons; l ; l = l->next) {
 778                 traywin = (TrayWindow*)l->data;
 779                 if (traywin->tray_id == win) {
 780                         //printf("move tray %d\n", traywin->x);
 781                         XMoveResizeWindow(server.dsp, traywin->id, traywin->x, traywin->y, traywin->width, traywin->height);
 782                         XResizeWindow(server.dsp, traywin->tray_id, traywin->width, traywin->height);
 783                         panel_refresh = 1;
 784                         return;
 785                 }
 786         }
 787
 788         // 'win' move in another monitor
 789         if (nb_panel == 1) return;
 790         Task *tsk = task_get_task (win);
 791         if (!tsk) return;
 792
 793         Panel *p = tsk->area.panel;
 794         if (p->monitor != window_get_monitor (win)) {
 795                 remove_task (tsk);
 796                 tsk = add_task (win);
 797                 if (win == window_get_active ()) {
 798                         set_task_state(tsk, TASK_ACTIVE);
 799                         task_active = tsk;
 800                 }
 801                 panel_refresh = 1;
 802         }
 803 }
 804
 805 char *GetAtomName(Display* disp, Atom a)
 806 {
 807         if (a == None)
 808                 return "None";
 809         else
 810                 return XGetAtomName(disp, a);
 811 }
 812
 813 typedef struct Property
 814 {
 815         unsigned char *data;
 816         int format, nitems;
 817         Atom type;
 818 } Property;
 819
 820 //This fetches all the data from a property
 821 struct Property read_property(Display* disp, Window w, Atom property)
 822 {
 823         Atom actual_type;
 824         int actual_format;
 825         unsigned long nitems;
 826         unsigned long bytes_after;
 827         unsigned char *ret=0;
 828
 829         int read_bytes = 1024;
 830
 831         //Keep trying to read the property until there are no
 832         //bytes unread.
 833         do {
 834                 if (ret != 0)
 835                         XFree(ret);
 836                 XGetWindowProperty(disp, w, property, 0, read_bytes, False, AnyPropertyType,
 837                                                         &actual_type, &actual_format, &nitems, &bytes_after,
 838                                                         &ret);
 839                 read_bytes *= 2;
 840         } while (bytes_after != 0);
 841
 842         fprintf(stderr, "DnD %s:%d: Property:\n", __FILE__, __LINE__);
 843         fprintf(stderr, "DnD %s:%d: Actual type: %s\n", __FILE__, __LINE__, GetAtomName(disp, actual_type));
 844         fprintf(stderr, "DnD %s:%d: Actual format: %d\n", __FILE__, __LINE__, actual_format);
 845         fprintf(stderr, "DnD %s:%d: Number of items: %lu\n", __FILE__, __LINE__, nitems);
 846
 847         Property p;
 848         p.data = ret;
 849         p.format = actual_format;
 850         p.nitems = nitems;
 851         p.type = actual_type;
 852
 853         return p;
 854 }
 855
 856 // This function takes a list of targets which can be converted to (atom_list, nitems)
 857 // and a list of acceptable targets with prioritees (datatypes). It returns the highest
 858 // entry in datatypes which is also in atom_list: ie it finds the best match.
 859 Atom pick_target_from_list(Display* disp, Atom* atom_list, int nitems)
 860 {
 861         Atom to_be_requested = None;
 862         int i;
 863         for (i = 0; i < nitems; i++) {
 864                 char *atom_name = GetAtomName(disp, atom_list[i]);
 865                 fprintf(stderr, "DnD %s:%d: Type %d = %s\n", __FILE__, __LINE__, i, atom_name);
 866
 867                 //See if this data type is allowed and of higher priority (closer to zero)
 868                 //than the present one.
 869                 if (strcmp(atom_name, "STRING") == 0) {
 870                         to_be_requested = atom_list[i];
 871                 }
 872         }
 873
 874         return to_be_requested;
 875 }
 876
 877 // Finds the best target given up to three atoms provided (any can be None).
 878 // Useful for part of the Xdnd protocol.
 879 Atom pick_target_from_atoms(Display* disp, Atom t1, Atom t2, Atom t3)
 880 {
 881         Atom atoms[3];
 882         int n = 0;
 883
 884         if (t1 != None)
 885                 atoms[n++] = t1;
 886
 887         if (t2 != None)
 888                 atoms[n++] = t2;
 889
 890         if (t3 != None)
 891                 atoms[n++] = t3;
 892
 893         return pick_target_from_list(disp, atoms, n);
 894 }
 895
 896 // Finds the best target given a local copy of a property.
 897 Atom pick_target_from_targets(Display* disp, Property p)
 898 {
 899         //The list of targets is a list of atoms, so it should have type XA_ATOM
 900         //but it may have the type TARGETS instead.
 901
 902         if ((p.type != XA_ATOM && p.type != server.atom.TARGETS) || p.format != 32) {
 903                 //This would be really broken. Targets have to be an atom list
 904                 //and applications should support this. Nevertheless, some
 905                 //seem broken (MATLAB 7, for instance), so ask for STRING
 906                 //next instead as the lowest common denominator
 907                 return XA_STRING;
 908         } else {
 909                 Atom *atom_list = (Atom*)p.data;
 910
 911                 return pick_target_from_list(disp, atom_list, p.nitems);
 912         }
 913 }
 914
 915 void dnd_enter(XClientMessageEvent *e)
 916 {
 917         dnd_atom = None;
 918         int more_than_3 = e->data.l[1] & 1;
 919         dnd_source_window = e->data.l[0];
 920         dnd_version = (e->data.l[1] >> 24);
 921
 922         fprintf(stderr, "DnD %s:%d: DnDEnter\n", __FILE__, __LINE__);
 923         fprintf(stderr, "DnD %s:%d: DnDEnter. Supports > 3 types = %s\n", __FILE__, __LINE__, more_than_3 ? "yes" : "no");
 924         fprintf(stderr, "DnD %s:%d: Protocol version = %d\n", __FILE__, __LINE__, dnd_version);
 925         fprintf(stderr, "DnD %s:%d: Type 1 = %s\n", __FILE__, __LINE__, GetAtomName(server.dsp, e->data.l[2]));
 926         fprintf(stderr, "DnD %s:%d: Type 2 = %s\n", __FILE__, __LINE__, GetAtomName(server.dsp, e->data.l[3]));
 927         fprintf(stderr, "DnD %s:%d: Type 3 = %s\n", __FILE__, __LINE__, GetAtomName(server.dsp, e->data.l[4]));
 928
 929         //Query which conversions are available and pick the best
 930
 931         if (more_than_3) {
 932                 //Fetch the list of possible conversions
 933                 //Notice the similarity to TARGETS with paste.
 934                 Property p = read_property(server.dsp, dnd_source_window, server.atom.XdndTypeList);
 935                 dnd_atom = pick_target_from_targets(server.dsp, p);
 936                 XFree(p.data);
 937         } else {
 938                 //Use the available list
 939                 dnd_atom = pick_target_from_atoms(server.dsp, e->data.l[2], e->data.l[3], e->data.l[4]);
 940         }
 941
 942         fprintf(stderr, "DnD %s:%d: Requested type = %s\n", __FILE__, __LINE__, GetAtomName(server.dsp, dnd_atom));
 943 }
 944
 945 void dnd_position(XClientMessageEvent *e)
 946 {
 947         dnd_target_window = e->window;
 948         int accept = 0;
 949         Panel *panel = get_panel(e->window);
 950         int x, y, mapX, mapY;
 951         Window child;
 952         x = (e->data.l[2] >> 16) & 0xFFFF;
 953         y = e->data.l[2] & 0xFFFF;
 954         XTranslateCoordinates(server.dsp, server.root_win, e->window, x, y, &mapX, &mapY, &child);
 955         Task* task = click_task(panel, mapX, mapY);
 956         if (task) {
 957                 if (task->desktop != server.desktop )
 958                         set_desktop (task->desktop);
 959                 window_action(task, TOGGLE);
 960         } else {
 961                 LauncherIcon *icon = click_launcher_icon(panel, mapX, mapY);
 962                 if (icon) {
 963                         accept = 1;
 964                         dnd_launcher_exec = icon->cmd;
 965                 } else {
 966                         dnd_launcher_exec = 0;
 967                 }
 968         }
 969
 970         // send XdndStatus event to get more XdndPosition events
 971         XClientMessageEvent se;
 972         se.type = ClientMessage;
 973         se.window = e->data.l[0];
 974         se.message_type = server.atom.XdndStatus;
 975         se.format = 32;
 976         se.data.l[0] = e->window;  // XID of the target window
 977         se.data.l[1] = accept ? 1 : 0;          // bit 0: accept drop    bit 1: send XdndPosition events if inside rectangle
 978         se.data.l[2] = 0;          // Rectangle x,y for which no more XdndPosition events
 979         se.data.l[3] = (1 << 16) | 1;  // Rectangle w,h for which no more XdndPosition events
 980         if (accept) {
 981                 se.data.l[4] = dnd_version >= 2 ? e->data.l[4] : server.atom.XdndActionCopy;
 982         } else {
 983                 se.data.l[4] = None;       // None = drop will not be accepted
 984         }
 985
 986         XSendEvent(server.dsp, e->data.l[0], False, NoEventMask, (XEvent*)&se);
 987 }
 988
 989 void dnd_drop(XClientMessageEvent *e)
 990 {
 991         if (dnd_target_window && dnd_launcher_exec) {
 992                 if (dnd_version >= 1) {
 993                         XConvertSelection(server.dsp, server.atom.XdndSelection, XA_STRING, dnd_selection, dnd_target_window, e->data.l[2]);
 994                 } else {
 995                         XConvertSelection(server.dsp, server.atom.XdndSelection, XA_STRING, dnd_selection, dnd_target_window, CurrentTime);
 996                 }
 997         } else {
 998                 //The source is sending anyway, despite instructions to the contrary.
 999                 //So reply that we're not interested.
1000                 XClientMessageEvent m;
1001                 memset(&m, sizeof(m), 0);
1002                 m.type = ClientMessage;
1003                 m.display = e->display;
1004                 m.window = e->data.l[0];
1005                 m.message_type = server.atom.XdndFinished;
1006                 m.format = 32;
1007                 m.data.l[0] = dnd_target_window;
1008                 m.data.l[1] = 0;
1009                 m.data.l[2] = None; //Failed.
1010                 XSendEvent(server.dsp, e->data.l[0], False, NoEventMask, (XEvent*)&m);
1011         }
1012 }
1013
1014 int main (int argc, char *argv[])
1015 {
1016         XEvent e;
1017         XClientMessageEvent *ev;
1018         fd_set fdset;
1019         int x11_fd, i;
1020         Panel *panel;
1021         GSList *it;
1022         struct timeval* timeout;
1023         int hidden_dnd = 0;
1024
1025 start:
1026         init (argc, argv);
1027         init_X11();
1028
1029         i = 0;
1030         if (config_path)
1031                 i = config_read_file (config_path);
1032         else
1033                 i = config_read ();
1034         if (!i) {
1035                 fprintf(stderr, "usage: tint2 [-c] <config_file>\n");
1036                 cleanup();
1037                 exit(1);
1038         }
1039
1040         init_panel();
1041         if (snapshot_path) {
1042                 get_snapshot(snapshot_path);
1043                 cleanup();
1044                 exit(0);
1045         }
1046
1047         int damage_event, damage_error;
1048         XDamageQueryExtension(server.dsp, &damage_event, &damage_error);
1049         x11_fd = ConnectionNumber(server.dsp);
1050         XSync(server.dsp, False);
1051
1052         // XDND initialization
1053         dnd_source_window = 0;
1054         dnd_target_window = 0;
1055         dnd_version = 0;
1056         dnd_selection = XInternAtom(server.dsp, "PRIMARY", 0);
1057         dnd_atom = None;
1058         dnd_sent_request = 0;
1059         dnd_launcher_exec = 0;
1060
1061 //      sigset_t empty_mask;
1062 //      sigemptyset(&empty_mask);
1063
1064         while (1) {
1065                 if (panel_refresh) {
1066                         panel_refresh = 0;
1067
1068                         for (i=0 ; i < nb_panel ; i++) {
1069                                 panel = &panel1[i];
1070
1071                                 if (panel->is_hidden) {
1072                                         XCopyArea(server.dsp, panel->hidden_pixmap, panel->main_win, server.gc, 0, 0, panel->hidden_width, panel->hidden_height, 0, 0);
1073                                         XSetWindowBackgroundPixmap(server.dsp, panel->main_win, panel->hidden_pixmap);
1074                                 }
1075                                 else {
1076                                         if (panel->temp_pmap) XFreePixmap(server.dsp, panel->temp_pmap);
1077                                         panel->temp_pmap = XCreatePixmap(server.dsp, server.root_win, panel->area.width, panel->area.height, server.depth);
1078                                         rendering(panel);
1079                                         XCopyArea(server.dsp, panel->temp_pmap, panel->main_win, server.gc, 0, 0, panel->area.width, panel->area.height, 0, 0);
1080                                 }
1081                         }
1082                         XFlush (server.dsp);
1083
1084                         panel = (Panel*)systray.area.panel;
1085                         if (refresh_systray && panel && !panel->is_hidden) {
1086                                 refresh_systray = 0;
1087                                 // tint2 doen't draw systray icons. it just redraw background.
1088                                 XSetWindowBackgroundPixmap (server.dsp, panel->main_win, panel->temp_pmap);
1089                                 // force icon's refresh
1090                                 refresh_systray_icon();
1091                         }
1092                 }
1093
1094                 // thanks to AngryLlama for the timer
1095                 // Create a File Description Set containing x11_fd
1096                 FD_ZERO (&fdset);
1097                 FD_SET (x11_fd, &fdset);
1098                 update_next_timeout();
1099                 if (next_timeout.tv_sec >= 0 && next_timeout.tv_usec >= 0)
1100                         timeout = &next_timeout;
1101                 else
1102                         timeout = 0;
1103
1104                 // Wait for X Event or a Timer
1105                 if (select(x11_fd+1, &fdset, 0, 0, timeout) > 0) {
1106                         while (XPending (server.dsp)) {
1107                                 XNextEvent(server.dsp, &e);
1108 #if HAVE_SN
1109                                 sn_display_process_event (server.sn_dsp, &e);
1110 #endif // HAVE_SN
1111
1112                                 panel = get_panel(e.xany.window);
1113                                 if (panel && panel_autohide) {
1114                                         if (e.type == EnterNotify)
1115                                                 autohide_trigger_show(panel);
1116                                         else if (e.type == LeaveNotify)
1117                                                 autohide_trigger_hide(panel);
1118                                         if (panel->is_hidden) {
1119                                                 if (e.type == ClientMessage && e.xclient.message_type == server.atom.XdndPosition) {
1120                                                         hidden_dnd = 1;
1121                                                         autohide_show(panel);
1122                                                 }
1123                                                 else
1124                                                         continue;   // discard further processing of this event because the panel is not visible yet
1125                                         }
1126                                         else if (hidden_dnd && e.type == ClientMessage && e.xclient.message_type == server.atom.XdndLeave) {
1127                                                 hidden_dnd = 0;
1128                                                 autohide_hide(panel);
1129                                         }
1130                                 }
1131
1132                                 switch (e.type) {
1133                                         case ButtonPress:
1134                                                 tooltip_hide(0);
1135                                                 event_button_press (&e);
1136                                                 break;
1137
1138                                         case ButtonRelease:
1139                                                 event_button_release(&e);
1140                                                 break;
1141
1142                                         case MotionNotify: {
1143                                                 unsigned int button_mask = Button1Mask | Button2Mask | Button3Mask | Button4Mask | Button5Mask;
1144                                                 if (e.xmotion.state & button_mask)
1145                                                         event_button_motion_notify (&e);
1146
1147                                                 Panel* panel = get_panel(e.xmotion.window);
1148                                                 Area* area = click_area(panel, e.xmotion.x, e.xmotion.y);
1149                                                 if (area->_get_tooltip_text)
1150                                                         tooltip_trigger_show(area, panel, &e);
1151                                                 else
1152                                                         tooltip_trigger_hide();
1153                                                 break;
1154                                         }
1155
1156                                         case LeaveNotify:
1157                                                 tooltip_trigger_hide();
1158                                                 break;
1159
1160                                         case Expose:
1161                                                 event_expose(&e);
1162                                                 break;
1163
1164                                         case PropertyNotify:
1165                                                 event_property_notify(&e);
1166                                                 break;
1167
1168                                         case ConfigureNotify:
1169                                                 event_configure_notify (e.xconfigure.window);
1170                                                 break;
1171
1172                                         case ReparentNotify:
1173                                                 if (!systray_enabled)
1174                                                         break;
1175                                                 panel = (Panel*)systray.area.panel;
1176                                                 if (e.xany.window == panel->main_win) // reparented to us
1177                                                         break;
1178                                                 // FIXME: 'reparent to us' badly detected => disabled
1179                                                 break;
1180                                         case UnmapNotify:
1181                                         case DestroyNotify:
1182                                                 if (e.xany.window == server.composite_manager) {
1183                                                         // Stop real_transparency
1184                                                         signal_pending = SIGUSR1;
1185                                                         break;
1186                                                 }
1187                                                 if (e.xany.window == g_tooltip.window || !systray_enabled)
1188                                                         break;
1189                                                 for (it = systray.list_icons; it; it = g_slist_next(it)) {
1190                                                         if (((TrayWindow*)it->data)->tray_id == e.xany.window) {
1191                                                                 remove_icon((TrayWindow*)it->data);
1192                                                                 break;
1193                                                         }
1194                                                 }
1195                                                 break;
1196
1197                                         case ClientMessage:
1198                                                 ev = &e.xclient;
1199                                                 if (ev->data.l[1] == server.atom._NET_WM_CM_S0) {
1200                                                         if (ev->data.l[2] == None)
1201                                                                 // Stop real_transparency
1202                                                                 signal_pending = SIGUSR1;
1203                                                         else
1204                                                                 // Start real_transparency
1205                                                                 signal_pending = SIGUSR1;
1206                                                 }
1207                                                 if (systray_enabled && e.xclient.message_type == server.atom._NET_SYSTEM_TRAY_OPCODE && e.xclient.format == 32 && e.xclient.window == net_sel_win) {
1208                                                         net_message(&e.xclient);
1209                                                 }
1210                                                 else if (e.xclient.message_type == server.atom.XdndEnter) {
1211                                                         dnd_enter(&e.xclient);
1212                                                 }
1213                                                 else if (e.xclient.message_type == server.atom.XdndPosition) {
1214                                                         dnd_position(&e.xclient);
1215                                                 }
1216                                                 else if (e.xclient.message_type == server.atom.XdndDrop) {
1217                                                         dnd_drop(&e.xclient);
1218                                                 }
1219                                                 break;
1220
1221                                         case SelectionNotify:
1222                                                 {
1223                                                         Atom target = e.xselection.target;
1224
1225                                                         fprintf(stderr, "DnD %s:%d: A selection notify has arrived!\n", __FILE__, __LINE__);
1226                                                         fprintf(stderr, "DnD %s:%d: Requestor = %lu\n", __FILE__, __LINE__, e.xselectionrequest.requestor);
1227                                                         fprintf(stderr, "DnD %s:%d: Selection atom = %s\n", __FILE__, __LINE__, GetAtomName(server.dsp, e.xselection.selection));
1228                                                         fprintf(stderr, "DnD %s:%d: Target atom    = %s\n", __FILE__, __LINE__, GetAtomName(server.dsp, target));
1229                                                         fprintf(stderr, "DnD %s:%d: Property atom  = %s\n", __FILE__, __LINE__, GetAtomName(server.dsp, e.xselection.property));
1230
1231                                                         if (e.xselection.property != None && dnd_launcher_exec) {
1232                                                                 Property prop = read_property(server.dsp, dnd_target_window, dnd_selection);
1233
1234                                                                 //If we're being given a list of targets (possible conversions)
1235                                                                 if (target == server.atom.TARGETS && !dnd_sent_request) {
1236                                                                         dnd_sent_request = 1;
1237                                                                         dnd_atom = pick_target_from_targets(server.dsp, prop);
1238
1239                                                                         if (dnd_atom == None) {
1240                                                                                 fprintf(stderr, "No matching datatypes.\n");
1241                                                                         } else {
1242                                                                                 //Request the data type we are able to select
1243                                                                                 fprintf(stderr, "Now requsting type %s", GetAtomName(server.dsp, dnd_atom));
1244                                                                                 XConvertSelection(server.dsp, dnd_selection, dnd_atom, dnd_selection, dnd_target_window, CurrentTime);
1245                                                                         }
1246                                                                 } else if (target == dnd_atom) {
1247                                                                         //Dump the binary data
1248                                                                         fprintf(stderr, "DnD %s:%d: Data begins:\n", __FILE__, __LINE__);
1249                                                                         fprintf(stderr, "--------\n");
1250                                                                         int i;
1251                                                                         for (i = 0; i < prop.nitems * prop.format/8; i++)
1252                                                                                 fprintf(stderr, "%c", ((char*)prop.data)[i]);
1253                                                                         fprintf(stderr, "--------\n");
1254
1255                                                                         int cmd_length = 0;
1256                                                                         cmd_length += 1; // (
1257                                                                         cmd_length += strlen(dnd_launcher_exec) + 1; // exec + space
1258                                                                         cmd_length += 1; // open double quotes
1259                                                                         for (i = 0; i < prop.nitems * prop.format/8; i++) {
1260                                                                                 char c = ((char*)prop.data)[i];
1261                                                                                 if (c == '\n') {
1262                                                                                         if (i < prop.nitems * prop.format/8 - 1) {
1263                                                                                                 cmd_length += 3; // close double quotes, space, open double quotes
1264                                                                                         }
1265                                                                                 } else if (c == '\r') {
1266                                                                                 } else {
1267                                                                                         cmd_length += 1; // 1 character
1268                                                                                         if (c == '`' || c == '$' || c == '\\') {
1269                                                                                                 cmd_length += 1; // escape with one backslash
1270                                                                                         }
1271                                                                                 }
1272                                                                         }
1273                                                                         cmd_length += 1; // close double quotes
1274                                                                         cmd_length += 2; // &)
1275                                                                         cmd_length += 1; // terminator
1276
1277                                                                         char *cmd = malloc(cmd_length);
1278                                                                         cmd[0] = '\0';
1279                                                                         strcat(cmd, "(");
1280                                                                         strcat(cmd, dnd_launcher_exec);
1281                                                                         strcat(cmd, " \"");
1282                                                                         for (i = 0; i < prop.nitems * prop.format/8; i++) {
1283                                                                                 char c = ((char*)prop.data)[i];
1284                                                                                 if (c == '\n') {
1285                                                                                         if (i < prop.nitems * prop.format/8 - 1) {
1286                                                                                                 strcat(cmd, "\" \"");
1287                                                                                         }
1288                                                                                 } else if (c == '\r') {
1289                                                                                 } else {
1290                                                                                         if (c == '`' || c == '$' || c == '\\') {
1291                                                                                                 strcat(cmd, "\\");
1292                                                                                         }
1293                                                                                         char sc[2];
1294                                                                                         sc[0] = c;
1295                                                                                         sc[1] = '\0';
1296                                                                                         strcat(cmd, sc);
1297                                                                                 }
1298                                                                         }
1299                                                                         strcat(cmd, "\"");
1300                                                                         strcat(cmd, "&)");
1301                                                                         fprintf(stderr, "DnD %s:%d: Running command: %s\n", __FILE__, __LINE__, cmd);
1302                                                                         tint_exec(cmd);
1303                                                                         free(cmd);
1304
1305                                                                         // Reply OK.
1306                                                                         XClientMessageEvent m;
1307                                                                         memset(&m, sizeof(m), 0);
1308                                                                         m.type = ClientMessage;
1309                                                                         m.display = server.dsp;
1310                                                                         m.window = dnd_source_window;
1311                                                                         m.message_type = server.atom.XdndFinished;
1312                                                                         m.format = 32;
1313                                                                         m.data.l[0] = dnd_target_window;
1314                                                                         m.data.l[1] = 1;
1315                                                                         m.data.l[2] = server.atom.XdndActionCopy; //We only ever copy.
1316                                                                         XSendEvent(server.dsp, dnd_source_window, False, NoEventMask, (XEvent*)&m);
1317                                                                         XSync(server.dsp, False);
1318                                                                 }
1319
1320                                                                 XFree(prop.data);
1321                                                         }
1322
1323                                                         break;
1324                                                 }
1325
1326                                         default:
1327                                                 if (e.type == XDamageNotify+damage_event) {
1328                                                         // union needed to avoid strict-aliasing warnings by gcc
1329                                                         union { XEvent e; XDamageNotifyEvent de; } event_union = {.e=e};
1330                                                         TrayWindow *traywin;
1331                                                         GSList *l;
1332                                                         XDamageNotifyEvent* de = &event_union.de;
1333                                                         for (l = systray.list_icons; l ; l = l->next) {
1334                                                                 traywin = (TrayWindow*)l->data;
1335                                                                 if ( traywin->id == de->drawable ) {
1336                                                                         systray_render_icon(traywin);
1337                                                                         break;
1338                                                                 }
1339                                                         }
1340                                                 }
1341                                 }
1342                         }
1343                 }
1344
1345                 callback_timeout_expired();
1346
1347                 if (signal_pending) {
1348                         cleanup();
1349                         if (signal_pending == SIGUSR1) {
1350                                 // restart tint2
1351                                 // SIGUSR1 used when : user's signal, composite manager stop/start or xrandr
1352                                 FD_CLR (x11_fd, &fdset); // not sure if needed
1353                                 goto start;
1354                         }
1355                         else {
1356                                 // SIGINT, SIGTERM, SIGHUP
1357                                 return 0;
1358                         }
1359                 }
1360         }
1361 }
1362
1363