Dogcows Code - chaz/tint2/blob - src/systray/systraybar.c

   1 /**************************************************************************
   2 * Tint2 : systraybar
   3 *
   4 * Copyright (C) 2009 thierry lorthiois (lorthiois@bbsoft.fr)
   5 *
   6 * This program is free software; you can redistribute it and/or
   7 * modify it under the terms of the GNU General Public License version 2
   8 * as published by the Free Software Foundation.
   9 *
  10 * This program is distributed in the hope that it will be useful,
  11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 * GNU General Public License for more details.
  14 * You should have received a copy of the GNU General Public License
  15 * along with this program; if not, write to the Free Software
  16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  17 **************************************************************************/
  18
  19 #include <X11/Xlib.h>
  20 #include <X11/Xutil.h>
  21 #include <X11/Xatom.h>
  22 #include <stdio.h>
  23 #include <stdlib.h>
  24 #include <string.h>
  25 #include <glib.h>
  26 #include <Imlib2.h>
  27
  28 #include "systraybar.h"
  29 #include "server.h"
  30 #include "panel.h"
  31
  32 GSList *icons;
  33
  34 /* defined in the systray spec */
  35 #define SYSTEM_TRAY_REQUEST_DOCK    0
  36 #define SYSTEM_TRAY_BEGIN_MESSAGE   1
  37 #define SYSTEM_TRAY_CANCEL_MESSAGE  2
  38
  39 Window net_sel_win = None;
  40
  41
  42 void init_systray()
  43 {
  44    Panel *panel;
  45    Systraybar *sysbar;
  46    int i, run_systray;
  47
  48         cleanup_systray();
  49
  50         run_systray = 0;
  51         for (i=0 ; i < nb_panel ; i++) {
  52            if (panel1[i].systray.area.visible) {
  53                 run_systray = 1;
  54                 break;
  55                 }
  56         }
  57         if (run_systray) {
  58                 if (XGetSelectionOwner(server.dsp, server.atom._NET_SYSTEM_TRAY_SCREEN) != None) {
  59                         fprintf(stderr, "tint2 warning : another systray is running\n");
  60                         run_systray = 0;
  61                 }
  62         }
  63
  64         if (run_systray)
  65                 run_systray = net_init();
  66
  67         for (i=0 ; i < nb_panel ; i++) {
  68            panel = &panel1[i];
  69            sysbar = &panel->systray;
  70
  71            if (!run_systray) {
  72                 sysbar->area.visible = 0;
  73                 continue;
  74                 }
  75            if (!sysbar->area.visible)
  76                 continue;
  77
  78                 sysbar->area.parent = panel;
  79                 sysbar->area.panel = panel;
  80
  81                 sysbar->area.posy = panel->area.pix.border.width + panel->area.paddingy;
  82                 sysbar->area.height = panel->area.height - (2 * sysbar->area.posy);
  83                 sysbar->area.width = 100;
  84
  85                 sysbar->area.posx = panel->area.width - panel->area.paddingxlr - panel->area.pix.border.width - sysbar->area.width;
  86            if (panel->clock.area.visible)
  87                 sysbar->area.posx -= (panel->clock.area.width + panel->area.paddingx);
  88
  89                 sysbar->area.redraw = 1;
  90         }
  91 }
  92
  93
  94 void cleanup_systray()
  95 {
  96    Panel *panel;
  97    int i;
  98
  99         for (i=0 ; i < nb_panel ; i++) {
 100                 panel = &panel1[i];
 101            if (!panel->systray.area.visible) continue;
 102
 103                 free_area(&panel->systray.area);
 104         }
 105
 106         if (net_sel_win != None) {
 107                 XDestroyWindow(server.dsp, net_sel_win);
 108                 net_sel_win = None;
 109         }
 110 }
 111
 112
 113 int resize_systray (Systraybar *sysbar)
 114 {
 115    return 0;
 116 }
 117
 118
 119
 120 Window win, root;
 121 int width, height;
 122 int border;
 123 int icon_size;
 124
 125
 126 void fix_geometry()
 127 {
 128   GSList *it;
 129
 130   //* find the proper width and height
 131   width = 0;
 132   height = icon_size;
 133   for (it = icons; it != NULL; it = g_slist_next(it)) {
 134     width += icon_size;
 135   }
 136
 137   XResizeWindow(server.dsp, win, width + border * 2, height + border * 2);
 138 }
 139
 140
 141 gboolean error;
 142 int window_error_handler(Display *d, XErrorEvent *e)
 143 {
 144   d=d;e=e;
 145   if (e->error_code == BadWindow) {
 146     error = TRUE;
 147   } else {
 148     //g_printerr("X ERROR NOT BAD WINDOW!\n");
 149     abort();
 150   }
 151   return 0;
 152 }
 153
 154
 155 gboolean icon_swallow(TrayWindow *traywin)
 156 {
 157   XErrorHandler old;
 158
 159   error = FALSE;
 160   old = XSetErrorHandler(window_error_handler);
 161   XReparentWindow(server.dsp, traywin->id, win, 0, 0);
 162   XSync(server.dsp, False);
 163   XSetErrorHandler(old);
 164
 165   return !error;
 166 }
 167
 168
 169 // The traywin must have its id and type set.
 170 gboolean icon_add(Window id)
 171 {
 172   TrayWindow *traywin;
 173
 174   traywin = g_new0(TrayWindow, 1);
 175   traywin->id = id;
 176
 177   if (!icon_swallow(traywin)) {
 178     g_free(traywin);
 179     return FALSE;
 180   }
 181
 182   // find the positon for the systray app window
 183         int count = g_slist_length(icons);
 184         traywin->x = border + ((width % icon_size) / 2) +
 185         (count % (width / icon_size)) * icon_size;
 186         traywin->y = border + ((height % icon_size) / 2) +
 187         (count / (height / icon_size)) * icon_size;
 188
 189   // add the new icon to the list
 190   icons = g_slist_append(icons, traywin);
 191
 192   // watch for the icon trying to resize itself!
 193   XSelectInput(server.dsp, traywin->id, StructureNotifyMask);
 194
 195   // position and size the icon window
 196   XMoveResizeWindow(server.dsp, traywin->id, traywin->x, traywin->y, icon_size, icon_size);
 197
 198   // resize our window so that the new window can fit in it
 199   fix_geometry();
 200
 201   // flush before clearing, otherwise the clear isn't effective.
 202   XFlush(server.dsp);
 203   // make sure the new child will get the right stuff in its background
 204   // for ParentRelative.
 205   XClearWindow(server.dsp, win);
 206
 207   // show the window
 208   XMapRaised(server.dsp, traywin->id);
 209
 210   return TRUE;
 211 }
 212
 213
 214 int net_init()
 215 {
 216         // init systray protocol
 217    net_sel_win = XCreateSimpleWindow(server.dsp, server.root_win, -1, -1, 1, 1, 0, 0, 0);
 218
 219         XSetSelectionOwner(server.dsp, server.atom._NET_SYSTEM_TRAY_SCREEN, net_sel_win, CurrentTime);
 220         if (XGetSelectionOwner(server.dsp, server.atom._NET_SYSTEM_TRAY_SCREEN) != net_sel_win) {
 221                 fprintf(stderr, "tint2 warning : can't get systray manager\n");
 222                 return 0;
 223         }
 224
 225         XEvent m;
 226         m.type = ClientMessage;
 227         m.xclient.message_type = server.atom.MANAGER;
 228         m.xclient.format = 32;
 229         m.xclient.data.l[0] = CurrentTime;
 230         m.xclient.data.l[1] = server.atom._NET_SYSTEM_TRAY_SCREEN;
 231         m.xclient.data.l[2] = net_sel_win;
 232         m.xclient.data.l[3] = 0;
 233         m.xclient.data.l[4] = 0;
 234         XSendEvent(server.dsp, server.root_win, False, StructureNotifyMask, &m);
 235         return 1;
 236 }
 237
 238
 239 void net_message(XClientMessageEvent *e)
 240 {
 241   unsigned long opcode;
 242   Window id;
 243
 244   opcode = e->data.l[1];
 245
 246   switch (opcode)
 247   {
 248   case SYSTEM_TRAY_REQUEST_DOCK: /* dock a new icon */
 249     id = e->data.l[2];
 250     if (id && icon_add(id))
 251       XSelectInput(server.dsp, id, StructureNotifyMask);
 252     break;
 253
 254   case SYSTEM_TRAY_BEGIN_MESSAGE:
 255     //g_printerr("Message From Dockapp\n");
 256     id = e->window;
 257     break;
 258
 259   case SYSTEM_TRAY_CANCEL_MESSAGE:
 260     //g_printerr("Message Cancelled\n");
 261     id = e->window;
 262     break;
 263
 264   default:
 265     if (opcode == server.atom._NET_SYSTEM_TRAY_MESSAGE_DATA) {
 266       //g_printerr("Text For Message From Dockapp:\n%s\n", e->data.b);
 267       id = e->window;
 268       break;
 269     }
 270
 271     /* unknown message type. not in the spec. */
 272     //g_printerr("Warning: Received unknown client message to System Tray selection window.\n");
 273     break;
 274   }
 275 }
 276
 277
 278 /*
 279 void event_loop()
 280 {
 281   XEvent e;
 282   Window cover;
 283   GSList *it;
 284
 285   while (!exit_app) {
 286     while (XPending(server.dsp)) {
 287       XNextEvent(display, &e);
 288
 289       switch (e.type)
 290       {
 291       case PropertyNotify:
 292         // systray window list has changed?
 293         if (e.xproperty.atom == kde_systray_prop) {
 294           XSelectInput(display, win, NoEventMask);
 295           kde_update_icons();
 296           XSelectInput(display, win, StructureNotifyMask);
 297
 298           while (XCheckTypedEvent(display, PropertyNotify, &e));
 299         }
 300
 301         break;
 302
 303       case ConfigureNotify:
 304         if (e.xany.window != win) {
 305           // find the icon it pertains to and beat it into submission
 306           GSList *it;
 307
 308           for (it = icons; it != NULL; it = g_slist_next(it)) {
 309             TrayWindow *traywin = it->data;
 310             if (traywin->id == e.xany.window) {
 311               XMoveResizeWindow(display, traywin->id, traywin->x, traywin->y,
 312                                 icon_size, icon_size);
 313               break;
 314             }
 315           }
 316           break;
 317         }
 318
 319         // briefly cover the entire containing window, which causes it and
 320         // all of the icons to refresh their windows. finally, they update
 321         // themselves when the background of the main window's parent changes.
 322
 323         cover = XCreateSimpleWindow(display, win, 0, 0,
 324                                     border * 2 + width, border * 2 + height,
 325                                     0, 0, 0);
 326         XMapWindow(display, cover);
 327         XDestroyWindow(display, cover);
 328
 329         break;
 330
 331       case ReparentNotify:
 332         if (e.xany.window == win) // reparented to us
 333           break;
 334       case UnmapNotify:
 335       case DestroyNotify:
 336         for (it = icons; it; it = g_slist_next(it)) {
 337           if (((TrayWindow*)it->data)->id == e.xany.window) {
 338             icon_remove(it);
 339             break;
 340           }
 341         }
 342         break;
 343
 344       case ClientMessage:
 345         if (e.xclient.message_type == net_opcode_atom &&
 346             e.xclient.format == 32 &&
 347             e.xclient.window == net_sel_win)
 348           net_message(&e.xclient);
 349
 350       default:
 351         break;
 352       }
 353     }
 354     usleep(500000);
 355   }
 356
 357   // remove/unparent all the icons
 358   while (icons) {
 359     // do the remove here explicitly, cuz the event handler isn't going to
 360     // happen anymore.
 361     icon_remove(icons);
 362   }
 363 }
 364 */
 365