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

   1 /* -*- mode: c; c-basic-offset: 4; tab-width: 4; indent-tabs-mode: t -*-
   2  * vim: ts=4 sw=4 noet ai cindent syntax=c
   3  *
   4  * Conky, a system monitor, based on torsmo
   5  *
   6  * Any original torsmo code is licensed under the BSD license
   7  *
   8  * All code written since the fork of torsmo is licensed under the GPL
   9  *
  10  * Please see COPYING for details
  11  *
  12  * Copyright (c) 2004, Hannu Saransaari and Lauri Hakkarainen
  13  * Copyright (c) 2005-2009 Brenden Matthews, Philip Kovacs, et. al.
  14  *      (see AUTHORS)
  15  * All rights reserved.
  16  *
  17  * This program is free software: you can redistribute it and/or modify
  18  * it under the terms of the GNU General Public License as published by
  19  * the Free Software Foundation, either version 3 of the License, or
  20  * (at your option) any later version.
  21  *
  22  * This program is distributed in the hope that it will be useful,
  23  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  24  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  25  * GNU General Public License for more details.
  26  * You should have received a copy of the GNU General Public License
  27  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  28  *
  29  */
  30
  31 #include "config.h"
  32 #include "conky.h"
  33 #include "logging.h"
  34 #include "common.h"
  35
  36 #include "x11.h"
  37 #include <X11/Xlib.h>
  38 #include <X11/Xatom.h>
  39 #include <X11/Xmd.h>
  40 #include <X11/Xutil.h>
  41 #ifdef IMLIB2
  42 #include "imlib2.h"
  43 #endif /* IMLIB2 */
  44
  45 #ifdef XFT
  46 #include <X11/Xft/Xft.h>
  47 int use_xft = 0;
  48 #endif
  49
  50 #ifdef HAVE_XDBE
  51 int use_xdbe;
  52 #endif
  53
  54 #ifdef USE_ARGB
  55 int use_argb_visual;
  56 int have_argb_visual;
  57 #endif /* USE_ARGB */
  58
  59 /* some basic X11 stuff */
  60 Display *display = NULL;
  61 int display_width;
  62 int display_height;
  63 int screen;
  64 static int set_transparent;
  65 static int background_colour;
  66
  67 /* workarea from _NET_WORKAREA, this is where window / text is aligned */
  68 int workarea[4];
  69
  70 /* Window stuff */
  71 struct conky_window window;
  72 char window_created = 0;
  73
  74 /* local prototypes */
  75 static void update_workarea(void);
  76 static Window find_desktop_window(Window *p_root, Window *p_desktop);
  77 static Window find_subwindow(Window win, int w, int h);
  78
  79 /* X11 initializer */
  80 void init_X11(const char *disp)
  81 {
  82         if (!display) {
  83                 if ((display = XOpenDisplay(disp)) == NULL) {
  84                         CRIT_ERR(NULL, NULL, "can't open display: %s", XDisplayName(disp));
  85                 }
  86         }
  87
  88         screen = DefaultScreen(display);
  89         display_width = DisplayWidth(display, screen);
  90         display_height = DisplayHeight(display, screen);
  91
  92         get_x11_desktop_info(display, 0);
  93
  94         update_workarea();
  95 }
  96
  97 static void update_workarea(void)
  98 {
  99         /* default work area is display */
 100         workarea[0] = 0;
 101         workarea[1] = 0;
 102         workarea[2] = display_width;
 103         workarea[3] = display_height;
 104 }
 105
 106 /* Find root window and desktop window.
 107  * Return desktop window on success,
 108  * and set root and desktop byref return values.
 109  * Return 0 on failure. */
 110 static Window find_desktop_window(Window *p_root, Window *p_desktop)
 111 {
 112         Atom type;
 113         int format, i;
 114         unsigned long nitems, bytes;
 115         unsigned int n;
 116         Window root = RootWindow(display, screen);
 117         Window win = root;
 118         Window troot, parent, *children;
 119         unsigned char *buf = NULL;
 120
 121         if (!p_root || !p_desktop) {
 122                 return 0;
 123         }
 124
 125         /* some window managers set __SWM_VROOT to some child of root window */
 126
 127         XQueryTree(display, root, &troot, &parent, &children, &n);
 128         for (i = 0; i < (int) n; i++) {
 129                 if (XGetWindowProperty(display, children[i], ATOM(__SWM_VROOT), 0, 1,
 130                                         False, XA_WINDOW, &type, &format, &nitems, &bytes, &buf)
 131                                 == Success && type == XA_WINDOW) {
 132                         win = *(Window *) buf;
 133                         XFree(buf);
 134                         XFree(children);
 135                         fprintf(stderr,
 136                                         PACKAGE_NAME": desktop window (%lx) found from __SWM_VROOT property\n",
 137                                         win);
 138                         fflush(stderr);
 139                         *p_root = win;
 140                         *p_desktop = win;
 141                         return win;
 142                 }
 143
 144                 if (buf) {
 145                         XFree(buf);
 146                         buf = 0;
 147                 }
 148         }
 149         XFree(children);
 150
 151         /* get subwindows from root */
 152         win = find_subwindow(root, -1, -1);
 153
 154         update_workarea();
 155
 156         win = find_subwindow(win, workarea[2], workarea[3]);
 157
 158         if (buf) {
 159                 XFree(buf);
 160                 buf = 0;
 161         }
 162
 163         if (win != root) {
 164                 fprintf(stderr,
 165                                 PACKAGE_NAME": desktop window (%lx) is subwindow of root window (%lx)\n",
 166                                 win, root);
 167         } else {
 168                 fprintf(stderr, PACKAGE_NAME": desktop window (%lx) is root window\n", win);
 169         }
 170
 171         fflush(stderr);
 172
 173         *p_root = root;
 174         *p_desktop = win;
 175
 176         return win;
 177 }
 178
 179 /* if no argb visual is configured sets background to ParentRelative for the Window and all parents,
 180    else real transparency is used */
 181 void set_transparent_background(Window win)
 182 {
 183         static int colour_set = -1;
 184
 185 #ifdef USE_ARGB
 186         if (have_argb_visual) {
 187                 // real transparency
 188                 if (set_transparent) {
 189                         XSetWindowBackground(display, win, 0x00);
 190                 } else if (colour_set != background_colour) {
 191                         XSetWindowBackground(display, win,
 192                                 background_colour | (0xff << 24));
 193                         colour_set = background_colour;
 194                 }
 195         } else {
 196 #endif /* USE_ARGB */
 197         // pseudo transparency
 198
 199         if (set_transparent) {
 200                 Window parent = win;
 201                 unsigned int i;
 202
 203                 for (i = 0; i < 50 && parent != RootWindow(display, screen); i++) {
 204                         Window r, *children;
 205                         unsigned int n;
 206
 207                         XSetWindowBackgroundPixmap(display, parent, ParentRelative);
 208
 209                         XQueryTree(display, parent, &r, &parent, &children, &n);
 210                         XFree(children);
 211                 }
 212         } else if (colour_set != background_colour) {
 213                 XSetWindowBackground(display, win, background_colour);
 214                 colour_set = background_colour;
 215         }
 216 #ifdef USE_ARGB
 217         }
 218 #endif /* USE_ARGB */
 219 }
 220
 221 #ifdef USE_ARGB
 222 static int get_argb_visual(Visual** visual, int *depth) {
 223         /* code from gtk project, gdk_screen_get_rgba_visual */
 224         XVisualInfo visual_template;
 225         XVisualInfo *visual_list;
 226         int nxvisuals = 0, i;
 227
 228         visual_template.screen = screen;
 229         visual_list = XGetVisualInfo (display, VisualScreenMask,
 230                                 &visual_template, &nxvisuals);
 231         for (i = 0; i < nxvisuals; i++) {
 232                 if (visual_list[i].depth == 32 &&
 233                          (visual_list[i].red_mask   == 0xff0000 &&
 234                           visual_list[i].green_mask == 0x00ff00 &&
 235                           visual_list[i].blue_mask  == 0x0000ff)) {
 236                         *visual = visual_list[i].visual;
 237                         *depth = visual_list[i].depth;
 238                         return 1;
 239                 }
 240         }
 241         // no argb visual available
 242         return 0;
 243 }
 244 #endif /* USE_ARGB */
 245
 246 void destroy_window(void)
 247 {
 248 #ifdef XFT
 249         if(window.xftdraw) {
 250                 XftDrawDestroy(window.xftdraw);
 251         }
 252 #endif
 253         if(window.gc) {
 254                 XFreeGC(display, window.gc);
 255         }
 256         memset(&window, 0, sizeof(struct conky_window));
 257 }
 258
 259 void init_window(int own_window, int w, int h, int set_trans, int back_colour,
 260                 char **argv, int argc)
 261 {
 262         /* There seems to be some problems with setting transparent background
 263          * (on fluxbox this time). It doesn't happen always and I don't know why it
 264          * happens but I bet the bug is somewhere here. */
 265         set_transparent = set_trans;
 266         background_colour = back_colour;
 267         window_created = 1;
 268
 269 #ifdef OWN_WINDOW
 270         if (own_window) {
 271                 int depth = 0, flags;
 272                 Visual *visual = NULL;
 273
 274                 if (!find_desktop_window(&window.root, &window.desktop)) {
 275                         return;
 276                 }
 277
 278 #ifdef USE_ARGB
 279                 if (use_argb_visual && get_argb_visual(&visual, &depth)) {
 280                         have_argb_visual = 1;
 281                         window.visual = visual;
 282                         window.colourmap = XCreateColormap(display,
 283                                 DefaultRootWindow(display), window.visual, AllocNone);
 284                 } else {
 285 #endif /* USE_ARGB */
 286                         window.visual = DefaultVisual(display, screen);
 287                         window.colourmap = DefaultColormap(display, screen);
 288                         depth = CopyFromParent;
 289                         visual = CopyFromParent;
 290 #ifdef USE_ARGB
 291                 }
 292 #endif /* USE_ARGB */
 293
 294                 if (window.type == TYPE_OVERRIDE) {
 295
 296                         /* An override_redirect True window.
 297                          * No WM hints or button processing needed. */
 298                         XSetWindowAttributes attrs = { ParentRelative, 0L, 0, 0L, 0, 0,
 299                                 Always, 0L, 0L, False, StructureNotifyMask | ExposureMask, 0L,
 300                                 True, 0, 0 };
 301 #ifdef USE_ARGB
 302                         if (have_argb_visual) {
 303                                 attrs.colormap = window.colourmap;
 304                                 flags = CWBorderPixel | CWColormap | CWOverrideRedirect;
 305                         } else {
 306 #endif /* USE_ARGB */
 307                                 flags = CWBackPixel | CWOverrideRedirect;
 308 #ifdef USE_ARGB
 309                         }
 310 #endif /* USE_ARGB */
 311
 312                         /* Parent is desktop window (which might be a child of root) */
 313                         window.window = XCreateWindow(display, window.desktop, window.x,
 314                                         window.y, w, h, 0, depth, InputOutput, visual,
 315                                         flags, &attrs);
 316
 317                         XLowerWindow(display, window.window);
 318
 319                         fprintf(stderr, PACKAGE_NAME": window type - override\n");
 320                         fflush(stderr);
 321                 } else { /* window.type != TYPE_OVERRIDE */
 322
 323                         /* A window managed by the window manager.
 324                          * Process hints and buttons. */
 325                         XSetWindowAttributes attrs = { ParentRelative, 0L, 0, 0L, 0, 0,
 326                                 Always, 0L, 0L, False, StructureNotifyMask | ExposureMask |
 327                                         ButtonPressMask | ButtonReleaseMask, 0L, False, 0, 0 };
 328
 329                         XClassHint classHint;
 330                         XWMHints wmHint;
 331                         Atom xa;
 332
 333 #ifdef USE_ARGB
 334                         if (have_argb_visual) {
 335                                 attrs.colormap = window.colourmap;
 336                                 flags = CWBorderPixel | CWColormap | CWOverrideRedirect;
 337                         } else {
 338 #endif /* USE_ARGB */
 339                                 flags = CWBackPixel | CWOverrideRedirect;
 340 #ifdef USE_ARGB
 341                         }
 342 #endif /* USE_ARGB */
 343
 344                         if (window.type == TYPE_DOCK) {
 345                                 window.x = window.y = 0;
 346                         }
 347                         /* Parent is root window so WM can take control */
 348                         window.window = XCreateWindow(display, window.root, window.x,
 349                                         window.y, w, h, 0, depth, InputOutput, visual,
 350                                         flags, &attrs);
 351
 352                         classHint.res_name = window.class_name;
 353                         classHint.res_class = classHint.res_name;
 354
 355                         wmHint.flags = InputHint | StateHint;
 356                         /* allow decorated windows to be given input focus by WM */
 357                         wmHint.input =
 358                                 TEST_HINT(window.hints, HINT_UNDECORATED) ? False : True;
 359                         if (window.type == TYPE_DOCK || window.type == TYPE_PANEL) {
 360                                 wmHint.initial_state = WithdrawnState;
 361                         } else {
 362                                 wmHint.initial_state = NormalState;
 363                         }
 364
 365                         XmbSetWMProperties(display, window.window, NULL, NULL, argv,
 366                                         argc, NULL, &wmHint, &classHint);
 367                         XStoreName(display, window.window, window.title);
 368
 369                         /* Sets an empty WM_PROTOCOLS property */
 370                         XSetWMProtocols(display, window.window, NULL, 0);
 371
 372                         /* Set window type */
 373                         if ((xa = ATOM(_NET_WM_WINDOW_TYPE)) != None) {
 374                                 Atom prop;
 375
 376                                 switch (window.type) {
 377                                         case TYPE_DESKTOP:
 378                                                 prop = ATOM(_NET_WM_WINDOW_TYPE_DESKTOP);
 379                                                 fprintf(stderr, PACKAGE_NAME": window type - desktop\n");
 380                                                 fflush(stderr);
 381                                                 break;
 382                                         case TYPE_DOCK:
 383                                                 prop = ATOM(_NET_WM_WINDOW_TYPE_DOCK);
 384                                                 fprintf(stderr, PACKAGE_NAME": window type - dock\n");
 385                                                 fflush(stderr);
 386                                                 break;
 387                                         case TYPE_PANEL:
 388                                                 prop = ATOM(_NET_WM_WINDOW_TYPE_DOCK);
 389                                                 fprintf(stderr, PACKAGE_NAME": window type - panel\n");
 390                                                 fflush(stderr);
 391                                                 break;
 392                                         case TYPE_NORMAL:
 393                                         default:
 394                                                 prop = ATOM(_NET_WM_WINDOW_TYPE_NORMAL);
 395                                                 fprintf(stderr, PACKAGE_NAME": window type - normal\n");
 396                                                 fflush(stderr);
 397                                                 break;
 398                                 }
 399                                 XChangeProperty(display, window.window, xa, XA_ATOM, 32,
 400                                                 PropModeReplace, (unsigned char *) &prop, 1);
 401                         }
 402
 403                         /* Set desired hints */
 404
 405                         /* Window decorations */
 406                         if (TEST_HINT(window.hints, HINT_UNDECORATED)) {
 407                                 /* fprintf(stderr, PACKAGE_NAME": hint - undecorated\n");
 408                                    fflush(stderr); */
 409
 410                                 xa = ATOM(_MOTIF_WM_HINTS);
 411                                 if (xa != None) {
 412                                         long prop[5] = { 2, 0, 0, 0, 0 };
 413                                         XChangeProperty(display, window.window, xa, xa, 32,
 414                                                         PropModeReplace, (unsigned char *) prop, 5);
 415                                 }
 416                         }
 417
 418                         /* Below other windows */
 419                         if (TEST_HINT(window.hints, HINT_BELOW)) {
 420                                 /* fprintf(stderr, PACKAGE_NAME": hint - below\n");
 421                                    fflush(stderr); */
 422
 423                                 xa = ATOM(_WIN_LAYER);
 424                                 if (xa != None) {
 425                                         long prop = 0;
 426
 427                                         XChangeProperty(display, window.window, xa, XA_CARDINAL, 32,
 428                                                         PropModeAppend, (unsigned char *) &prop, 1);
 429                                 }
 430
 431                                 xa = ATOM(_NET_WM_STATE);
 432                                 if (xa != None) {
 433                                         Atom xa_prop = ATOM(_NET_WM_STATE_BELOW);
 434
 435                                         XChangeProperty(display, window.window, xa, XA_ATOM, 32,
 436                                                         PropModeAppend, (unsigned char *) &xa_prop, 1);
 437                                 }
 438                         }
 439
 440                         /* Above other windows */
 441                         if (TEST_HINT(window.hints, HINT_ABOVE)) {
 442                                 /* fprintf(stderr, PACKAGE_NAME": hint - above\n");
 443                                    fflush(stderr); */
 444
 445                                 xa = ATOM(_WIN_LAYER);
 446                                 if (xa != None) {
 447                                         long prop = 6;
 448
 449                                         XChangeProperty(display, window.window, xa, XA_CARDINAL, 32,
 450                                                         PropModeAppend, (unsigned char *) &prop, 1);
 451                                 }
 452
 453                                 xa = ATOM(_NET_WM_STATE);
 454                                 if (xa != None) {
 455                                         Atom xa_prop = ATOM(_NET_WM_STATE_ABOVE);
 456
 457                                         XChangeProperty(display, window.window, xa, XA_ATOM, 32,
 458                                                         PropModeAppend, (unsigned char *) &xa_prop, 1);
 459                                 }
 460                         }
 461
 462                         /* Sticky */
 463                         if (TEST_HINT(window.hints, HINT_STICKY)) {
 464                                 /* fprintf(stderr, PACKAGE_NAME": hint - sticky\n");
 465                                    fflush(stderr); */
 466
 467                                 xa = ATOM(_NET_WM_DESKTOP);
 468                                 if (xa != None) {
 469                                         CARD32 xa_prop = 0xFFFFFFFF;
 470
 471                                         XChangeProperty(display, window.window, xa, XA_CARDINAL, 32,
 472                                                         PropModeAppend, (unsigned char *) &xa_prop, 1);
 473                                 }
 474
 475                                 xa = ATOM(_NET_WM_STATE);
 476                                 if (xa != None) {
 477                                         Atom xa_prop = ATOM(_NET_WM_STATE_STICKY);
 478
 479                                         XChangeProperty(display, window.window, xa, XA_ATOM, 32,
 480                                                         PropModeAppend, (unsigned char *) &xa_prop, 1);
 481                                 }
 482                         }
 483
 484                         /* Skip taskbar */
 485                         if (TEST_HINT(window.hints, HINT_SKIP_TASKBAR)) {
 486                                 /* fprintf(stderr, PACKAGE_NAME": hint - skip_taskbar\n");
 487                                    fflush(stderr); */
 488
 489                                 xa = ATOM(_NET_WM_STATE);
 490                                 if (xa != None) {
 491                                         Atom xa_prop = ATOM(_NET_WM_STATE_SKIP_TASKBAR);
 492
 493                                         XChangeProperty(display, window.window, xa, XA_ATOM, 32,
 494                                                         PropModeAppend, (unsigned char *) &xa_prop, 1);
 495                                 }
 496                         }
 497
 498                         /* Skip pager */
 499                         if (TEST_HINT(window.hints, HINT_SKIP_PAGER)) {
 500                                 /* fprintf(stderr, PACKAGE_NAME": hint - skip_pager\n");
 501                                    fflush(stderr); */
 502
 503                                 xa = ATOM(_NET_WM_STATE);
 504                                 if (xa != None) {
 505                                         Atom xa_prop = ATOM(_NET_WM_STATE_SKIP_PAGER);
 506
 507                                         XChangeProperty(display, window.window, xa, XA_ATOM, 32,
 508                                                         PropModeAppend, (unsigned char *) &xa_prop, 1);
 509                                 }
 510                         }
 511                 }
 512
 513                 fprintf(stderr, PACKAGE_NAME": drawing to created window (0x%lx)\n",
 514                                 window.window);
 515                 fflush(stderr);
 516
 517                 XMapWindow(display, window.window);
 518
 519         } else
 520 #endif /* OWN_WINDOW */
 521         {
 522                 XWindowAttributes attrs;
 523
 524                 if (!window.window) {
 525                         window.window = find_desktop_window(&window.root, &window.desktop);
 526                 }
 527
 528                 if (XGetWindowAttributes(display, window.window, &attrs)) {
 529                         window.width = attrs.width;
 530                         window.height = attrs.height;
 531                 }
 532
 533                 fprintf(stderr, PACKAGE_NAME": drawing to desktop window\n");
 534         }
 535
 536         /* Drawable is same as window. This may be changed by double buffering. */
 537         window.drawable = window.window;
 538
 539 #ifdef HAVE_XDBE
 540         if (use_xdbe) {
 541                 int major, minor;
 542
 543                 if (!XdbeQueryExtension(display, &major, &minor)) {
 544                         use_xdbe = 0;
 545                 } else {
 546                         window.back_buffer = XdbeAllocateBackBufferName(display,
 547                                         window.window, XdbeBackground);
 548                         if (window.back_buffer != None) {
 549                                 window.drawable = window.back_buffer;
 550                                 fprintf(stderr, PACKAGE_NAME": drawing to double buffer\n");
 551                         } else {
 552                                 use_xdbe = 0;
 553                         }
 554                 }
 555                 if (!use_xdbe) {
 556                         NORM_ERR("failed to set up double buffer");
 557                 }
 558         }
 559         if (!use_xdbe) {
 560                 fprintf(stderr, PACKAGE_NAME": drawing to single buffer\n");
 561         }
 562 #endif
 563 #ifdef IMLIB2
 564         {
 565                 cimlib_init(display, window.drawable, window.visual, window.colourmap);
 566         }
 567 #endif /* IMLIB2 */
 568         XFlush(display);
 569
 570         XSelectInput(display, window.window, ExposureMask | PropertyChangeMask
 571 #ifdef OWN_WINDOW
 572                         | (own_window ? (StructureNotifyMask |
 573                                         ButtonPressMask | ButtonReleaseMask) : 0)
 574 #endif
 575                         );
 576 }
 577
 578 static Window find_subwindow(Window win, int w, int h)
 579 {
 580         unsigned int i, j;
 581         Window troot, parent, *children;
 582         unsigned int n;
 583
 584         /* search subwindows with same size as display or work area */
 585
 586         for (i = 0; i < 10; i++) {
 587                 XQueryTree(display, win, &troot, &parent, &children, &n);
 588
 589                 for (j = 0; j < n; j++) {
 590                         XWindowAttributes attrs;
 591
 592                         if (XGetWindowAttributes(display, children[j], &attrs)) {
 593                                 /* Window must be mapped and same size as display or
 594                                  * work space */
 595                                 if (attrs.map_state != 0 && ((attrs.width == display_width
 596                                                                 && attrs.height == display_height)
 597                                                         || (attrs.width == w && attrs.height == h))) {
 598                                         win = children[j];
 599                                         break;
 600                                 }
 601                         }
 602                 }
 603
 604                 XFree(children);
 605                 if (j == n) {
 606                         break;
 607                 }
 608         }
 609
 610         return win;
 611 }
 612
 613 void create_gc(void)
 614 {
 615         XGCValues values;
 616
 617         values.graphics_exposures = 0;
 618         values.function = GXcopy;
 619         window.gc = XCreateGC(display, window.drawable,
 620                         GCFunction | GCGraphicsExposures, &values);
 621 }
 622
 623 //Get current desktop number
 624 static inline void get_x11_desktop_current(Display *current_display, Window root, Atom atom)
 625 {
 626         Atom actual_type;
 627         int actual_format;
 628         unsigned long nitems;
 629         unsigned long bytes_after;
 630         unsigned char *prop = NULL;
 631         struct information *current_info = &info;
 632
 633         if (atom == None) return;
 634
 635         if ( (XGetWindowProperty( current_display, root, atom,
 636                                         0, 1L, False, XA_CARDINAL,
 637                                         &actual_type, &actual_format, &nitems,
 638                                         &bytes_after, &prop ) == Success ) &&
 639                         (actual_type == XA_CARDINAL) &&
 640                         (nitems == 1L) && (actual_format == 32) ) {
 641                 current_info->x11.desktop.current = prop[0]+1;
 642         }
 643         if(prop) {
 644                 XFree(prop);
 645         }
 646 }
 647
 648 //Get total number of available desktops
 649 static inline void get_x11_desktop_number(Display *current_display, Window root, Atom atom)
 650 {
 651         Atom actual_type;
 652         int actual_format;
 653         unsigned long nitems;
 654         unsigned long bytes_after;
 655         unsigned char *prop = NULL;
 656         struct information *current_info = &info;
 657
 658         if (atom == None) return;
 659
 660         if ( (XGetWindowProperty( current_display, root, atom,
 661                                         0, 1L, False, XA_CARDINAL,
 662                                         &actual_type, &actual_format, &nitems,
 663                                         &bytes_after, &prop ) == Success ) &&
 664                         (actual_type == XA_CARDINAL) &&
 665                         (nitems == 1L) && (actual_format == 32) ) {
 666                 current_info->x11.desktop.number = prop[0];
 667         }
 668         if(prop) {
 669                 XFree(prop);
 670         }
 671 }
 672
 673 //Get all desktop names
 674 static inline void get_x11_desktop_names(Display *current_display, Window root, Atom atom)
 675 {
 676         Atom actual_type;
 677         int actual_format;
 678         unsigned long nitems;
 679         unsigned long bytes_after;
 680         unsigned char *prop = NULL;
 681         struct information *current_info = &info;
 682
 683         if (atom == None) return;
 684
 685         if ( (XGetWindowProperty( current_display, root, atom,
 686                                         0, (~0L), False, ATOM(UTF8_STRING),
 687                                         &actual_type, &actual_format, &nitems,
 688                                         &bytes_after, &prop ) == Success ) &&
 689                         (actual_type == ATOM(UTF8_STRING)) &&
 690                         (nitems > 0L) && (actual_format == 8) ) {
 691
 692                 if(current_info->x11.desktop.all_names) {
 693                         free(current_info->x11.desktop.all_names);
 694                         current_info->x11.desktop.all_names = NULL;
 695                 }
 696                 current_info->x11.desktop.all_names = malloc(nitems*sizeof(char));
 697                 memcpy(current_info->x11.desktop.all_names, prop, nitems);
 698                 current_info->x11.desktop.nitems = nitems;
 699         }
 700         if(prop) {
 701                 XFree(prop);
 702         }
 703 }
 704
 705 //Get current desktop name
 706 static inline void get_x11_desktop_current_name(char *names)
 707 {
 708         struct information *current_info = &info;
 709         unsigned int i = 0, j = 0;
 710         int k = 0;
 711
 712         while ( i < current_info->x11.desktop.nitems ) {
 713                 if ( names[i++] == '\0' ) {
 714                         if ( ++k == current_info->x11.desktop.current ) {
 715                                 if (current_info->x11.desktop.name) {
 716                                         free(current_info->x11.desktop.name);
 717                                         current_info->x11.desktop.name = NULL;
 718                                 }
 719                                 current_info->x11.desktop.name = malloc((i-j)*sizeof(char));
 720                                 //desktop names can be empty but should always be not null
 721                                 strcpy( current_info->x11.desktop.name, (char *)&names[j] );
 722                                 break;
 723                         }
 724                         j = i;
 725                 }
 726         }
 727 }
 728
 729 void get_x11_desktop_info(Display *current_display, Atom atom)
 730 {
 731         Window root;
 732         static Atom atom_current, atom_number, atom_names;
 733         struct information *current_info = &info;
 734         XWindowAttributes window_attributes;
 735
 736         root = RootWindow(current_display, current_info->x11.monitor.current);
 737
 738         /* Check if we initialise else retrieve changed property */
 739         if (atom == 0) {
 740                 atom_current = XInternAtom(current_display, "_NET_CURRENT_DESKTOP", True);
 741                 atom_number  = XInternAtom(current_display, "_NET_NUMBER_OF_DESKTOPS", True);
 742                 atom_names   = XInternAtom(current_display, "_NET_DESKTOP_NAMES", True);
 743                 get_x11_desktop_current(current_display, root, atom_current);
 744                 get_x11_desktop_number(current_display, root, atom_number);
 745                 get_x11_desktop_names(current_display, root, atom_names);
 746                 get_x11_desktop_current_name(current_info->x11.desktop.all_names);
 747
 748                 /* Set the PropertyChangeMask on the root window, if not set */
 749                 XGetWindowAttributes(display, root, &window_attributes);
 750                 if (!(window_attributes.your_event_mask & PropertyChangeMask)) {
 751                         XSetWindowAttributes attributes;
 752                         attributes.event_mask = window_attributes.your_event_mask | PropertyChangeMask;
 753                         XChangeWindowAttributes(display, root, CWEventMask, &attributes);
 754                         XGetWindowAttributes(display, root, &window_attributes);
 755                 }
 756         } else {
 757                 if (atom == atom_current) {
 758                         get_x11_desktop_current(current_display, root, atom_current);
 759                         get_x11_desktop_current_name(current_info->x11.desktop.all_names);
 760                 } else if (atom == atom_number) {
 761                         get_x11_desktop_number(current_display, root, atom_number);
 762                 } else if (atom == atom_names) {
 763                         get_x11_desktop_names(current_display, root, atom_names);
 764                         get_x11_desktop_current_name(current_info->x11.desktop.all_names);
 765                 }
 766         }
 767 }
 768
 769 void update_x11info(void)
 770 {
 771         struct information *current_info = &info;
 772         if (!x_initialised == YES)
 773                 return;
 774         current_info->x11.monitor.number = XScreenCount(display);
 775         current_info->x11.monitor.current = XDefaultScreen(display);
 776 }
 777
 778 #ifdef OWN_WINDOW
 779 /* reserve window manager space */
 780 void set_struts(int sidenum)
 781 {
 782         Atom strut;
 783         if ((strut = ATOM(_NET_WM_STRUT)) != None) {
 784                 /* reserve space at left, right, top, bottom */
 785                 signed long sizes[12] = {0};
 786                 int i;
 787
 788                 /* define strut depth */
 789                 switch (sidenum) {
 790                         case 0:
 791                                 /* left side */
 792                                 sizes[0] = window.x + window.width;
 793                                 break;
 794                         case 1:
 795                                 /* right side */
 796                                 sizes[1] = display_width - window.x;
 797                                 break;
 798                         case 2:
 799                                 /* top side */
 800                                 sizes[2] = window.y + window.height;
 801                                 break;
 802                         case 3:
 803                                 /* bottom side */
 804                                 sizes[3] = display_height - window.y;
 805                                 break;
 806                 }
 807
 808                 /* define partial strut length */
 809                 if (sidenum <= 1) {
 810                         sizes[4 + (sidenum*2)] = window.y;
 811                         sizes[5 + (sidenum*2)] = window.y + window.height;
 812                 } else if (sidenum <= 3) {
 813                         sizes[4 + (sidenum*2)] = window.x;
 814                         sizes[5 + (sidenum*2)] = window.x + window.width;
 815                 }
 816
 817                 /* check constraints */
 818                 for (i = 0; i < 12; i++) {
 819                         if (sizes[i] < 0) {
 820                                 sizes[i] = 0;
 821                         } else {
 822                                 if (i <= 1 || i >= 8) {
 823                                         if (sizes[i] > display_width) {
 824                                                 sizes[i] = display_width;
 825                                         }
 826                                 } else {
 827                                         if (sizes[i] > display_height) {
 828                                                 sizes[i] = display_height;
 829                                         }
 830                                 }
 831                         }
 832                 }
 833
 834                 XChangeProperty(display, window.window, strut, XA_CARDINAL, 32,
 835                                 PropModeReplace, (unsigned char *) &sizes, 4);
 836
 837                 if ((strut = ATOM(_NET_WM_STRUT_PARTIAL)) != None) {
 838                         XChangeProperty(display, window.window, strut, XA_CARDINAL, 32,
 839                                         PropModeReplace, (unsigned char *) &sizes, 12);
 840                 }
 841         }
 842 }
 843 #endif /* OWN_WINDOW */
 844
 845 #ifdef HAVE_XDBE
 846 void xdbe_swap_buffers(void)
 847 {
 848         if (use_xdbe) {
 849                 XdbeSwapInfo swap;
 850
 851                 swap.swap_window = window.window;
 852                 swap.swap_action = XdbeBackground;
 853                 XdbeSwapBuffers(display, &swap, 1);
 854         }
 855 }
 856 #endif /* HAVE_XDBE */
 857