vcs.maemo.org Git - monky/blob - src/x11.c

   1 /* -*- mode: c; c-basic-offset: 4; tab-width: 4; indent-tabs-mode: t -*-
   2  *
   3  * Conky, a system monitor, based on torsmo
   4  *
   5  * Any original torsmo code is licensed under the BSD license
   6  *
   7  * All code written since the fork of torsmo is licensed under the GPL
   8  *
   9  * Please see COPYING for details
  10  *
  11  * Copyright (c) 2004, Hannu Saransaari and Lauri Hakkarainen
  12  * Copyright (c) 2005-2009 Brenden Matthews, Philip Kovacs, et. al.
  13  *      (see AUTHORS)
  14  * All rights reserved.
  15  *
  16  * This program is free software: you can redistribute it and/or modify
  17  * it under the terms of the GNU General Public License as published by
  18  * the Free Software Foundation, either version 3 of the License, or
  19  * (at your option) any later version.
  20  *
  21  * This program is distributed in the hope that it will be useful,
  22  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  23  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  24  * GNU General Public License for more details.
  25  * You should have received a copy of the GNU General Public License
  26  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  27  *
  28  * vim: ts=4 sw=4 noet ai cindent syntax=c
  29  *
  30  */
  31
  32 #include "config.h"
  33 #include "conky.h"
  34 #include "logging.h"
  35 #include "common.h"
  36
  37 #include "x11.h"
  38 #include <X11/Xlib.h>
  39 #include <X11/Xatom.h>
  40 #include <X11/Xmd.h>
  41 #include <X11/Xutil.h>
  42 #ifdef IMLIB2
  43 #include "imlib2.h"
  44 #endif /* IMLIB2 */
  45
  46 #ifdef XFT
  47 #include <X11/Xft/Xft.h>
  48 int use_xft = 0;
  49 #endif
  50
  51 #ifdef HAVE_XDBE
  52 int use_xdbe;
  53 #endif
  54
  55 /* some basic X11 stuff */
  56 Display *display = NULL;
  57 int display_width;
  58 int display_height;
  59 int screen;
  60 static int set_transparent;
  61 static int background_colour;
  62
  63 /* workarea from _NET_WORKAREA, this is where window / text is aligned */
  64 int workarea[4];
  65
  66 /* Window stuff */
  67 struct conky_window window;
  68
  69 /* local prototypes */
  70 static void update_workarea(void);
  71 static Window find_desktop_window(Window *p_root, Window *p_desktop);
  72 static Window find_subwindow(Window win, int w, int h);
  73
  74 /* X11 initializer */
  75 void init_X11(const char *disp)
  76 {
  77         if (!display) {
  78                 if ((display = XOpenDisplay(disp)) == NULL) {
  79                         CRIT_ERR(NULL, NULL, "can't open display: %s", XDisplayName(disp));
  80                 }
  81         }
  82
  83         screen = DefaultScreen(display);
  84         display_width = DisplayWidth(display, screen);
  85         display_height = DisplayHeight(display, screen);
  86
  87         get_x11_desktop_info(display, 0);
  88
  89         update_workarea();
  90 }
  91
  92 static void update_workarea(void)
  93 {
  94         /* default work area is display */
  95         workarea[0] = 0;
  96         workarea[1] = 0;
  97         workarea[2] = display_width;
  98         workarea[3] = display_height;
  99 }
 100
 101 /* Find root window and desktop window.
 102  * Return desktop window on success,
 103  * and set root and desktop byref return values.
 104  * Return 0 on failure. */
 105 static Window find_desktop_window(Window *p_root, Window *p_desktop)
 106 {
 107         Atom type;
 108         int format, i;
 109         unsigned long nitems, bytes;
 110         unsigned int n;
 111         Window root = RootWindow(display, screen);
 112         Window win = root;
 113         Window troot, parent, *children;
 114         unsigned char *buf = NULL;
 115
 116         if (!p_root || !p_desktop) {
 117                 return 0;
 118         }
 119
 120         /* some window managers set __SWM_VROOT to some child of root window */
 121
 122         XQueryTree(display, root, &troot, &parent, &children, &n);
 123         for (i = 0; i < (int) n; i++) {
 124                 if (XGetWindowProperty(display, children[i], ATOM(__SWM_VROOT), 0, 1,
 125                                         False, XA_WINDOW, &type, &format, &nitems, &bytes, &buf)
 126                                 == Success && type == XA_WINDOW) {
 127                         win = *(Window *) buf;
 128                         XFree(buf);
 129                         XFree(children);
 130                         fprintf(stderr,
 131                                         PACKAGE_NAME": desktop window (%lx) found from __SWM_VROOT property\n",
 132                                         win);
 133                         fflush(stderr);
 134                         *p_root = win;
 135                         *p_desktop = win;
 136                         return win;
 137                 }
 138
 139                 if (buf) {
 140                         XFree(buf);
 141                         buf = 0;
 142                 }
 143         }
 144         XFree(children);
 145
 146         /* get subwindows from root */
 147         win = find_subwindow(root, -1, -1);
 148
 149         update_workarea();
 150
 151         win = find_subwindow(win, workarea[2], workarea[3]);
 152
 153         if (buf) {
 154                 XFree(buf);
 155                 buf = 0;
 156         }
 157
 158         if (win != root) {
 159                 fprintf(stderr,
 160                                 PACKAGE_NAME": desktop window (%lx) is subwindow of root window (%lx)\n",
 161                                 win, root);
 162         } else {
 163                 fprintf(stderr, PACKAGE_NAME": desktop window (%lx) is root window\n", win);
 164         }
 165
 166         fflush(stderr);
 167
 168         *p_root = root;
 169         *p_desktop = win;
 170
 171         return win;
 172 }
 173
 174 /* sets background to ParentRelative for the Window and all parents */
 175 void set_transparent_background(Window win)
 176 {
 177         static int colour_set = -1;
 178
 179         if (set_transparent) {
 180                 Window parent = win;
 181                 unsigned int i;
 182
 183                 for (i = 0; i < 50 && parent != RootWindow(display, screen); i++) {
 184                         Window r, *children;
 185                         unsigned int n;
 186
 187                         XSetWindowBackgroundPixmap(display, parent, ParentRelative);
 188
 189                         XQueryTree(display, parent, &r, &parent, &children, &n);
 190                         XFree(children);
 191                 }
 192         } else if (colour_set != background_colour) {
 193                 XSetWindowBackground(display, win, background_colour);
 194                 colour_set = background_colour;
 195         }
 196 }
 197
 198 void destroy_window(void)
 199 {
 200         if(window.xftdraw) {
 201                 XftDrawDestroy(window.xftdraw);
 202         }
 203         if(window.gc) {
 204                 XFreeGC(display, window.gc);
 205         }
 206         memset(&window, 0, sizeof(struct conky_window));
 207 }
 208
 209 void init_window(int own_window, int w, int h, int set_trans, int back_colour,
 210                 char **argv, int argc)
 211 {
 212         /* There seems to be some problems with setting transparent background
 213          * (on fluxbox this time). It doesn't happen always and I don't know why it
 214          * happens but I bet the bug is somewhere here. */
 215         set_transparent = set_trans;
 216         background_colour = back_colour;
 217
 218 #ifdef OWN_WINDOW
 219         if (own_window) {
 220                 if (!find_desktop_window(&window.root, &window.desktop)) {
 221                         return;
 222                 }
 223
 224                 if (window.type == TYPE_OVERRIDE) {
 225
 226                         /* An override_redirect True window.
 227                          * No WM hints or button processing needed. */
 228                         XSetWindowAttributes attrs = { ParentRelative, 0L, 0, 0L, 0, 0,
 229                                 Always, 0L, 0L, False, StructureNotifyMask | ExposureMask, 0L,
 230                                 True, 0, 0 };
 231
 232                         /* Parent is desktop window (which might be a child of root) */
 233                         window.window = XCreateWindow(display, window.desktop, window.x,
 234                                         window.y, w, h, 0, CopyFromParent, InputOutput, CopyFromParent,
 235                                         CWBackPixel | CWOverrideRedirect, &attrs);
 236
 237                         XLowerWindow(display, window.window);
 238
 239                         fprintf(stderr, PACKAGE_NAME": window type - override\n");
 240                         fflush(stderr);
 241                 } else { /* window.type != TYPE_OVERRIDE */
 242
 243                         /* A window managed by the window manager.
 244                          * Process hints and buttons. */
 245                         XSetWindowAttributes attrs = { ParentRelative, 0L, 0, 0L, 0, 0,
 246                                 Always, 0L, 0L, False, StructureNotifyMask | ExposureMask |
 247                                         ButtonPressMask | ButtonReleaseMask, 0L, False, 0, 0 };
 248
 249                         XClassHint classHint;
 250                         XWMHints wmHint;
 251                         Atom xa;
 252
 253                         if (window.type == TYPE_DOCK) {
 254                                 window.x = window.y = 0;
 255                         }
 256                         /* Parent is root window so WM can take control */
 257                         window.window = XCreateWindow(display, window.root, window.x,
 258                                         window.y, w, h, 0, CopyFromParent, InputOutput, CopyFromParent,
 259                                         CWBackPixel | CWOverrideRedirect, &attrs);
 260
 261                         classHint.res_name = window.class_name;
 262                         classHint.res_class = classHint.res_name;
 263
 264                         wmHint.flags = InputHint | StateHint;
 265                         /* allow decorated windows to be given input focus by WM */
 266                         wmHint.input =
 267                                 TEST_HINT(window.hints, HINT_UNDECORATED) ? False : True;
 268                         if (window.type == TYPE_DOCK || window.type == TYPE_PANEL) {
 269                                 wmHint.initial_state = WithdrawnState;
 270                         } else {
 271                                 wmHint.initial_state = NormalState;
 272                         }
 273
 274                         XmbSetWMProperties(display, window.window, window.title, NULL, argv,
 275                                         argc, NULL, &wmHint, &classHint);
 276
 277                         /* Sets an empty WM_PROTOCOLS property */
 278                         XSetWMProtocols(display, window.window, NULL, 0);
 279
 280                         /* Set window type */
 281                         if ((xa = ATOM(_NET_WM_WINDOW_TYPE)) != None) {
 282                                 Atom prop;
 283
 284                                 switch (window.type) {
 285                                         case TYPE_DESKTOP:
 286                                                 prop = ATOM(_NET_WM_WINDOW_TYPE_DESKTOP);
 287                                                 fprintf(stderr, PACKAGE_NAME": window type - desktop\n");
 288                                                 fflush(stderr);
 289                                                 break;
 290                                         case TYPE_DOCK:
 291                                                 prop = ATOM(_NET_WM_WINDOW_TYPE_DOCK);
 292                                                 fprintf(stderr, PACKAGE_NAME": window type - dock\n");
 293                                                 fflush(stderr);
 294                                                 break;
 295                                         case TYPE_PANEL:
 296                                                 prop = ATOM(_NET_WM_WINDOW_TYPE_DOCK);
 297                                                 fprintf(stderr, PACKAGE_NAME": window type - panel\n");
 298                                                 fflush(stderr);
 299                                                 break;
 300                                         case TYPE_NORMAL:
 301                                         default:
 302                                                 prop = ATOM(_NET_WM_WINDOW_TYPE_NORMAL);
 303                                                 fprintf(stderr, PACKAGE_NAME": window type - normal\n");
 304                                                 fflush(stderr);
 305                                                 break;
 306                                 }
 307                                 XChangeProperty(display, window.window, xa, XA_ATOM, 32,
 308                                                 PropModeReplace, (unsigned char *) &prop, 1);
 309                         }
 310
 311                         /* Set desired hints */
 312
 313                         /* Window decorations */
 314                         if (TEST_HINT(window.hints, HINT_UNDECORATED)) {
 315                                 /* fprintf(stderr, PACKAGE_NAME": hint - undecorated\n");
 316                                    fflush(stderr); */
 317
 318                                 xa = ATOM(_MOTIF_WM_HINTS);
 319                                 if (xa != None) {
 320                                         long prop[5] = { 2, 0, 0, 0, 0 };
 321                                         XChangeProperty(display, window.window, xa, xa, 32,
 322                                                         PropModeReplace, (unsigned char *) prop, 5);
 323                                 }
 324                         }
 325
 326                         /* Below other windows */
 327                         if (TEST_HINT(window.hints, HINT_BELOW)) {
 328                                 /* fprintf(stderr, PACKAGE_NAME": hint - below\n");
 329                                    fflush(stderr); */
 330
 331                                 xa = ATOM(_WIN_LAYER);
 332                                 if (xa != None) {
 333                                         long prop = 0;
 334
 335                                         XChangeProperty(display, window.window, xa, XA_CARDINAL, 32,
 336                                                         PropModeAppend, (unsigned char *) &prop, 1);
 337                                 }
 338
 339                                 xa = ATOM(_NET_WM_STATE);
 340                                 if (xa != None) {
 341                                         Atom xa_prop = ATOM(_NET_WM_STATE_BELOW);
 342
 343                                         XChangeProperty(display, window.window, xa, XA_ATOM, 32,
 344                                                         PropModeAppend, (unsigned char *) &xa_prop, 1);
 345                                 }
 346                         }
 347
 348                         /* Above other windows */
 349                         if (TEST_HINT(window.hints, HINT_ABOVE)) {
 350                                 /* fprintf(stderr, PACKAGE_NAME": hint - above\n");
 351                                    fflush(stderr); */
 352
 353                                 xa = ATOM(_WIN_LAYER);
 354                                 if (xa != None) {
 355                                         long prop = 6;
 356
 357                                         XChangeProperty(display, window.window, xa, XA_CARDINAL, 32,
 358                                                         PropModeAppend, (unsigned char *) &prop, 1);
 359                                 }
 360
 361                                 xa = ATOM(_NET_WM_STATE);
 362                                 if (xa != None) {
 363                                         Atom xa_prop = ATOM(_NET_WM_STATE_ABOVE);
 364
 365                                         XChangeProperty(display, window.window, xa, XA_ATOM, 32,
 366                                                         PropModeAppend, (unsigned char *) &xa_prop, 1);
 367                                 }
 368                         }
 369
 370                         /* Sticky */
 371                         if (TEST_HINT(window.hints, HINT_STICKY)) {
 372                                 /* fprintf(stderr, PACKAGE_NAME": hint - sticky\n");
 373                                    fflush(stderr); */
 374
 375                                 xa = ATOM(_NET_WM_DESKTOP);
 376                                 if (xa != None) {
 377                                         CARD32 xa_prop = 0xFFFFFFFF;
 378
 379                                         XChangeProperty(display, window.window, xa, XA_CARDINAL, 32,
 380                                                         PropModeAppend, (unsigned char *) &xa_prop, 1);
 381                                 }
 382
 383                                 xa = ATOM(_NET_WM_STATE);
 384                                 if (xa != None) {
 385                                         Atom xa_prop = ATOM(_NET_WM_STATE_STICKY);
 386
 387                                         XChangeProperty(display, window.window, xa, XA_ATOM, 32,
 388                                                         PropModeAppend, (unsigned char *) &xa_prop, 1);
 389                                 }
 390                         }
 391
 392                         /* Skip taskbar */
 393                         if (TEST_HINT(window.hints, HINT_SKIP_TASKBAR)) {
 394                                 /* fprintf(stderr, PACKAGE_NAME": hint - skip_taskbar\n");
 395                                    fflush(stderr); */
 396
 397                                 xa = ATOM(_NET_WM_STATE);
 398                                 if (xa != None) {
 399                                         Atom xa_prop = ATOM(_NET_WM_STATE_SKIP_TASKBAR);
 400
 401                                         XChangeProperty(display, window.window, xa, XA_ATOM, 32,
 402                                                         PropModeAppend, (unsigned char *) &xa_prop, 1);
 403                                 }
 404                         }
 405
 406                         /* Skip pager */
 407                         if (TEST_HINT(window.hints, HINT_SKIP_PAGER)) {
 408                                 /* fprintf(stderr, PACKAGE_NAME": hint - skip_pager\n");
 409                                    fflush(stderr); */
 410
 411                                 xa = ATOM(_NET_WM_STATE);
 412                                 if (xa != None) {
 413                                         Atom xa_prop = ATOM(_NET_WM_STATE_SKIP_PAGER);
 414
 415                                         XChangeProperty(display, window.window, xa, XA_ATOM, 32,
 416                                                         PropModeAppend, (unsigned char *) &xa_prop, 1);
 417                                 }
 418                         }
 419                 }
 420
 421                 fprintf(stderr, PACKAGE_NAME": drawing to created window (0x%lx)\n",
 422                                 window.window);
 423                 fflush(stderr);
 424
 425                 XMapWindow(display, window.window);
 426
 427         } else
 428 #endif /* OWN_WINDOW */
 429         {
 430                 XWindowAttributes attrs;
 431
 432                 if (!window.window) {
 433                         window.window = find_desktop_window(&window.root, &window.desktop);
 434                 }
 435
 436                 if (XGetWindowAttributes(display, window.window, &attrs)) {
 437                         window.width = attrs.width;
 438                         window.height = attrs.height;
 439                 }
 440
 441                 fprintf(stderr, PACKAGE_NAME": drawing to desktop window\n");
 442         }
 443
 444         /* Drawable is same as window. This may be changed by double buffering. */
 445         window.drawable = window.window;
 446
 447 #ifdef HAVE_XDBE
 448         if (use_xdbe) {
 449                 int major, minor;
 450
 451                 if (!XdbeQueryExtension(display, &major, &minor)) {
 452                         use_xdbe = 0;
 453                 } else {
 454                         window.back_buffer = XdbeAllocateBackBufferName(display,
 455                                         window.window, XdbeBackground);
 456                         if (window.back_buffer != None) {
 457                                 window.drawable = window.back_buffer;
 458                                 fprintf(stderr, PACKAGE_NAME": drawing to double buffer\n");
 459                         } else {
 460                                 use_xdbe = 0;
 461                         }
 462                 }
 463                 if (!use_xdbe) {
 464                         NORM_ERR("failed to set up double buffer");
 465                 }
 466         }
 467         if (!use_xdbe) {
 468                 fprintf(stderr, PACKAGE_NAME": drawing to single buffer\n");
 469         }
 470 #endif
 471         window.visual = DefaultVisual(display, DefaultScreen(display));
 472         window.colourmap = DefaultColormap(display, DefaultScreen(display));
 473 #ifdef IMLIB2
 474         {
 475                 cimlib_init(display, window.drawable, window.visual, window.colourmap);
 476         }
 477 #endif /* IMLIB2 */
 478         XFlush(display);
 479
 480         XSelectInput(display, window.window, ExposureMask | PropertyChangeMask
 481 #ifdef OWN_WINDOW
 482                         | (own_window ? (StructureNotifyMask |
 483                                         ButtonPressMask | ButtonReleaseMask) : 0)
 484 #endif
 485                         );
 486 }
 487
 488 static Window find_subwindow(Window win, int w, int h)
 489 {
 490         unsigned int i, j;
 491         Window troot, parent, *children;
 492         unsigned int n;
 493
 494         /* search subwindows with same size as display or work area */
 495
 496         for (i = 0; i < 10; i++) {
 497                 XQueryTree(display, win, &troot, &parent, &children, &n);
 498
 499                 for (j = 0; j < n; j++) {
 500                         XWindowAttributes attrs;
 501
 502                         if (XGetWindowAttributes(display, children[j], &attrs)) {
 503                                 /* Window must be mapped and same size as display or
 504                                  * work space */
 505                                 if (attrs.map_state != 0 && ((attrs.width == display_width
 506                                                                 && attrs.height == display_height)
 507                                                         || (attrs.width == w && attrs.height == h))) {
 508                                         win = children[j];
 509                                         break;
 510                                 }
 511                         }
 512                 }
 513
 514                 XFree(children);
 515                 if (j == n) {
 516                         break;
 517                 }
 518         }
 519
 520         return win;
 521 }
 522
 523 long get_x11_color(const char *name)
 524 {
 525         XColor color;
 526
 527         color.pixel = 0;
 528         if (!XParseColor(display, DefaultColormap(display, screen), name, &color)) {
 529                 /* lets check if it's a hex colour with the # missing in front
 530                  * if yes, then do something about it */
 531                 char newname[DEFAULT_TEXT_BUFFER_SIZE];
 532
 533                 newname[0] = '#';
 534                 strncpy(&newname[1], name, DEFAULT_TEXT_BUFFER_SIZE - 1);
 535                 /* now lets try again */
 536                 if (!XParseColor(display, DefaultColormap(display, screen), &newname[0],
 537                                         &color)) {
 538                         NORM_ERR("can't parse X color '%s'", name);
 539                         return 0xFF00FF;
 540                 }
 541         }
 542         if (!XAllocColor(display, DefaultColormap(display, screen), &color)) {
 543                 NORM_ERR("can't allocate X color '%s'", name);
 544         }
 545
 546         return (long) color.pixel;
 547 }
 548
 549 void create_gc(void)
 550 {
 551         XGCValues values;
 552
 553         values.graphics_exposures = 0;
 554         values.function = GXcopy;
 555         window.gc = XCreateGC(display, window.drawable,
 556                         GCFunction | GCGraphicsExposures, &values);
 557 }
 558
 559 //Get current desktop number
 560 static inline void get_x11_desktop_current(Display *current_display, Window root, Atom atom)
 561 {
 562         Atom actual_type;
 563         int actual_format;
 564         unsigned long nitems;
 565         unsigned long bytes_after;
 566         unsigned char *prop = NULL;
 567         struct information *current_info = &info;
 568
 569         if (atom == None) return;
 570
 571         if ( (XGetWindowProperty( current_display, root, atom,
 572                                         0, 1L, False, XA_CARDINAL,
 573                                         &actual_type, &actual_format, &nitems,
 574                                         &bytes_after, &prop ) == Success ) &&
 575                         (actual_type == XA_CARDINAL) &&
 576                         (nitems == 1L) && (actual_format == 32) ) {
 577                 current_info->x11.desktop.current = prop[0]+1;
 578         }
 579         if(prop) {
 580                 XFree(prop);
 581         }
 582 }
 583
 584 //Get total number of available desktops
 585 static inline void get_x11_desktop_number(Display *current_display, Window root, Atom atom)
 586 {
 587         Atom actual_type;
 588         int actual_format;
 589         unsigned long nitems;
 590         unsigned long bytes_after;
 591         unsigned char *prop = NULL;
 592         struct information *current_info = &info;
 593
 594         if (atom == None) return;
 595
 596         if ( (XGetWindowProperty( current_display, root, atom,
 597                                         0, 1L, False, XA_CARDINAL,
 598                                         &actual_type, &actual_format, &nitems,
 599                                         &bytes_after, &prop ) == Success ) &&
 600                         (actual_type == XA_CARDINAL) &&
 601                         (nitems == 1L) && (actual_format == 32) ) {
 602                 current_info->x11.desktop.number = prop[0];
 603         }
 604         if(prop) {
 605                 XFree(prop);
 606         }
 607 }
 608
 609 //Get all desktop names
 610 static inline void get_x11_desktop_names(Display *current_display, Window root, Atom atom)
 611 {
 612         Atom actual_type;
 613         int actual_format;
 614         unsigned long nitems;
 615         unsigned long bytes_after;
 616         unsigned char *prop = NULL;
 617         struct information *current_info = &info;
 618
 619         if (atom == None) return;
 620
 621         if ( (XGetWindowProperty( current_display, root, atom,
 622                                         0, (~0L), False, ATOM(UTF8_STRING),
 623                                         &actual_type, &actual_format, &nitems,
 624                                         &bytes_after, &prop ) == Success ) &&
 625                         (actual_type == ATOM(UTF8_STRING)) &&
 626                         (nitems > 0L) && (actual_format == 8) ) {
 627
 628                 if(current_info->x11.desktop.all_names) {
 629                         free(current_info->x11.desktop.all_names);
 630                         current_info->x11.desktop.all_names = NULL;
 631                 }
 632                 current_info->x11.desktop.all_names = malloc(nitems*sizeof(char));
 633                 memcpy(current_info->x11.desktop.all_names, prop, nitems);
 634                 current_info->x11.desktop.nitems = nitems;
 635         }
 636         if(prop) {
 637                 XFree(prop);
 638         }
 639 }
 640
 641 //Get current desktop name
 642 static inline void get_x11_desktop_current_name(char *names)
 643 {
 644         struct information *current_info = &info;
 645         unsigned int i = 0, j = 0;
 646         int k = 0;
 647
 648         while ( i < current_info->x11.desktop.nitems ) {
 649                 if ( names[i++] == '\0' ) {
 650                         if ( ++k == current_info->x11.desktop.current ) {
 651                                 if (current_info->x11.desktop.name) {
 652                                         free(current_info->x11.desktop.name);
 653                                         current_info->x11.desktop.name = NULL;
 654                                 }
 655                                 current_info->x11.desktop.name = malloc((i-j)*sizeof(char));
 656                                 //desktop names can be empty but should always be not null
 657                                 strcpy( current_info->x11.desktop.name, (char *)&names[j] );
 658                                 break;
 659                         }
 660                         j = i;
 661                 }
 662         }
 663 }
 664
 665 void get_x11_desktop_info(Display *current_display, Atom atom)
 666 {
 667         Window root;
 668         static Atom atom_current, atom_number, atom_names;
 669         struct information *current_info = &info;
 670         XWindowAttributes window_attributes;
 671
 672         root = RootWindow(current_display, current_info->x11.monitor.current);
 673
 674         /* Check if we initialise else retrieve changed property */
 675         if (atom == 0) {
 676                 atom_current = XInternAtom(current_display, "_NET_CURRENT_DESKTOP", True);
 677                 atom_number  = XInternAtom(current_display, "_NET_NUMBER_OF_DESKTOPS", True);
 678                 atom_names   = XInternAtom(current_display, "_NET_DESKTOP_NAMES", True);
 679                 get_x11_desktop_current(current_display, root, atom_current);
 680                 get_x11_desktop_number(current_display, root, atom_number);
 681                 get_x11_desktop_names(current_display, root, atom_names);
 682                 get_x11_desktop_current_name(current_info->x11.desktop.all_names);
 683
 684                 /* Set the PropertyChangeMask on the root window, if not set */
 685                 XGetWindowAttributes(display, root, &window_attributes);
 686                 if (!(window_attributes.your_event_mask & PropertyChangeMask)) {
 687                         XSetWindowAttributes attributes;
 688                         attributes.event_mask = window_attributes.your_event_mask | PropertyChangeMask;
 689                         XChangeWindowAttributes(display, root, CWEventMask, &attributes);
 690                         XGetWindowAttributes(display, root, &window_attributes);
 691                 }
 692         } else {
 693                 if (atom == atom_current) {
 694                         get_x11_desktop_current(current_display, root, atom_current);
 695                         get_x11_desktop_current_name(current_info->x11.desktop.all_names);
 696                 } else if (atom == atom_number) {
 697                         get_x11_desktop_number(current_display, root, atom_number);
 698                 } else if (atom == atom_names) {
 699                         get_x11_desktop_names(current_display, root, atom_names);
 700                         get_x11_desktop_current_name(current_info->x11.desktop.all_names);
 701                 }
 702         }
 703 }
 704
 705 void update_x11info(void)
 706 {
 707         struct information *current_info = &info;
 708         current_info->x11.monitor.number = XScreenCount(display);
 709         current_info->x11.monitor.current = XDefaultScreen(display);
 710 }
 711
 712 #ifdef OWN_WINDOW
 713 /* reserve window manager space */
 714 void set_struts(int sidenum)
 715 {
 716         Atom strut;
 717         if ((strut = ATOM(_NET_WM_STRUT)) != None) {
 718                 /* reserve space at left, right, top, bottom */
 719                 signed long sizes[12] = {0};
 720                 int i;
 721
 722                 /* define strut depth */
 723                 switch (sidenum) {
 724                         case 0:
 725                                 /* left side */
 726                                 sizes[0] = window.x + window.width;
 727                                 break;
 728                         case 1:
 729                                 /* right side */
 730                                 sizes[1] = display_width - window.x;
 731                                 break;
 732                         case 2:
 733                                 /* top side */
 734                                 sizes[2] = window.y + window.height;
 735                                 break;
 736                         case 3:
 737                                 /* bottom side */
 738                                 sizes[3] = display_height - window.y;
 739                                 break;
 740                 }
 741
 742                 /* define partial strut length */
 743                 if (sidenum <= 1) {
 744                         sizes[4 + (sidenum*2)] = window.y;
 745                         sizes[5 + (sidenum*2)] = window.y + window.height;
 746                 } else if (sidenum <= 3) {
 747                         sizes[4 + (sidenum*2)] = window.x;
 748                         sizes[5 + (sidenum*2)] = window.x + window.width;
 749                 }
 750
 751                 /* check constraints */
 752                 for (i = 0; i < 12; i++) {
 753                         if (sizes[i] < 0) {
 754                                 sizes[i] = 0;
 755                         } else {
 756                                 if (i <= 1 || i >= 8) {
 757                                         if (sizes[i] > display_width) {
 758                                                 sizes[i] = display_width;
 759                                         }
 760                                 } else {
 761                                         if (sizes[i] > display_height) {
 762                                                 sizes[i] = display_height;
 763                                         }
 764                                 }
 765                         }
 766                 }
 767
 768                 XChangeProperty(display, window.window, strut, XA_CARDINAL, 32,
 769                                 PropModeReplace, (unsigned char *) &sizes, 4);
 770
 771                 if ((strut = ATOM(_NET_WM_STRUT_PARTIAL)) != None) {
 772                         XChangeProperty(display, window.window, strut, XA_CARDINAL, 32,
 773                                         PropModeReplace, (unsigned char *) &sizes, 12);
 774                 }
 775         }
 776 }
 777 #endif /* OWN_WINDOW */
 778
 779 #ifdef HAVE_XDBE
 780 void xdbe_swap_buffers(void)
 781 {
 782         if (use_xdbe) {
 783                 XdbeSwapInfo swap;
 784
 785                 swap.swap_window = window.window;
 786                 swap.swap_action = XdbeBackground;
 787                 XdbeSwapBuffers(display, &swap, 1);
 788         }
 789 }
 790 #endif /* HAVE_XDBE */
 791