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 // selection window
  40 Window net_sel_win = None;
  41
  42
  43 void init_systray()
  44 {
  45    Panel *panel;
  46    Systraybar *sysbar;
  47    int i, run_systray;
  48
  49         cleanup_systray();
  50
  51         run_systray = 0;
  52         for (i=0 ; i < nb_panel ; i++) {
  53            if (panel1[i].systray.area.visible) {
  54                 run_systray = 1;
  55                 break;
  56                 }
  57         }
  58         if (run_systray) {
  59                 if (XGetSelectionOwner(server.dsp, server.atom._NET_SYSTEM_TRAY_SCREEN) != None) {
  60                         fprintf(stderr, "tint2 : another systray is running\n");
  61                         run_systray = 0;
  62                 }
  63         }
  64
  65         if (run_systray)
  66                 run_systray = net_init();
  67
  68         // configure sysbar on all panels
  69         for (i=0 ; i < nb_panel ; i++) {
  70            panel = &panel1[i];
  71            sysbar = &panel->systray;
  72
  73            if (!run_systray) {
  74                 sysbar->area.visible = 0;
  75                 continue;
  76                 }
  77            if (!sysbar->area.visible)
  78                 continue;
  79
  80                 sysbar->area.parent = panel;
  81                 sysbar->area.panel = panel;
  82
  83                 sysbar->area.posy = panel->area.pix.border.width + panel->area.paddingy;
  84                 sysbar->area.height = panel->area.height - (2 * sysbar->area.posy);
  85                 sysbar->area.width = 100;
  86
  87                 sysbar->area.posx = panel->area.width - panel->area.paddingxlr - panel->area.pix.border.width - sysbar->area.width;
  88            if (panel->clock.area.visible)
  89                 sysbar->area.posx -= (panel->clock.area.width + panel->area.paddingx);
  90
  91                 sysbar->area.redraw = 1;
  92         }
  93 }
  94
  95
  96 void cleanup_systray()
  97 {
  98    Panel *panel;
  99    int i;
 100
 101         for (i=0 ; i < nb_panel ; i++) {
 102                 panel = &panel1[i];
 103            if (!panel->systray.area.visible) continue;
 104
 105                 free_area(&panel->systray.area);
 106         }
 107
 108         if (net_sel_win != None) {
 109                 XDestroyWindow(server.dsp, net_sel_win);
 110                 net_sel_win = None;
 111         }
 112 }
 113
 114
 115 int net_init()
 116 {
 117         // init systray protocol
 118    net_sel_win = XCreateSimpleWindow(server.dsp, server.root_win, -1, -1, 1, 1, 0, 0, 0);
 119
 120         // v0.2 trayer specification. tint2 always orizontal.
 121         int orient = 0;
 122         XChangeProperty(server.dsp, net_sel_win, server.atom._NET_SYSTEM_TRAY_ORIENTATION, XA_CARDINAL, 32, PropModeReplace, (unsigned char *) &orient, 1);
 123
 124         XSetSelectionOwner(server.dsp, server.atom._NET_SYSTEM_TRAY_SCREEN, net_sel_win, CurrentTime);
 125         if (XGetSelectionOwner(server.dsp, server.atom._NET_SYSTEM_TRAY_SCREEN) != net_sel_win) {
 126                 fprintf(stderr, "tint2 : can't get systray manager\n");
 127                 return 0;
 128         }
 129
 130    XClientMessageEvent ev;
 131         ev.type = ClientMessage;
 132    ev.window = server.root_win;
 133         ev.message_type = server.atom.MANAGER;
 134         ev.format = 32;
 135         ev.data.l[0] = CurrentTime;
 136         ev.data.l[1] = server.atom._NET_SYSTEM_TRAY_SCREEN;
 137         ev.data.l[2] = net_sel_win;
 138         ev.data.l[3] = 0;
 139         ev.data.l[4] = 0;
 140         XSendEvent(server.dsp, server.root_win, False, StructureNotifyMask, &ev);
 141
 142         return 1;
 143 }
 144
 145
 146 int resize_systray (Systraybar *sysbar)
 147 {
 148    return 0;
 149 }
 150
 151
 152
 153 Window win, root;
 154 int width, height;
 155 int border;
 156 int icon_size;
 157
 158
 159 void fix_geometry()
 160 {
 161   GSList *it;
 162
 163   // find the proper width and height
 164   width = 0;
 165   height = icon_size;
 166   for (it = icons; it != NULL; it = g_slist_next(it)) {
 167     width += icon_size;
 168   }
 169
 170   XResizeWindow(server.dsp, win, width + border * 2, height + border * 2);
 171 }
 172
 173
 174 gboolean error;
 175 int window_error_handler(Display *d, XErrorEvent *e)
 176 {
 177   d=d;e=e;
 178   if (e->error_code == BadWindow) {
 179     error = TRUE;
 180   } else {
 181     //g_printerr("X ERROR NOT BAD WINDOW!\n");
 182     abort();
 183   }
 184   return 0;
 185 }
 186
 187
 188 gboolean icon_swallow(TrayWindow *traywin)
 189 {
 190   XErrorHandler old;
 191
 192   error = FALSE;
 193   old = XSetErrorHandler(window_error_handler);
 194   XReparentWindow(server.dsp, traywin->id, win, 0, 0);
 195   XSync(server.dsp, False);
 196   XSetErrorHandler(old);
 197
 198   return !error;
 199 }
 200
 201
 202 // The traywin must have its id and type set.
 203 gboolean icon_add(Window id)
 204 {
 205         TrayWindow *traywin;
 206
 207         traywin = g_new0(TrayWindow, 1);
 208         traywin->id = id;
 209
 210         if (!icon_swallow(traywin)) {
 211                 printf("not icon_swallow\n");
 212                 g_free(traywin);
 213                 return FALSE;
 214         }
 215
 216         // find the positon for the systray app window
 217         int count = g_slist_length(icons);
 218         traywin->x = border + ((width % icon_size) / 2) +
 219         (count % (width / icon_size)) * icon_size;
 220         traywin->y = border + ((height % icon_size) / 2) +
 221         (count / (height / icon_size)) * icon_size;
 222
 223         // add the new icon to the list
 224         icons = g_slist_append(icons, traywin);
 225
 226         // watch for the icon trying to resize itself!
 227         XSelectInput(server.dsp, traywin->id, StructureNotifyMask);
 228
 229         // position and size the icon window
 230         XMoveResizeWindow(server.dsp, traywin->id, traywin->x, traywin->y, icon_size, icon_size);
 231
 232         // resize our window so that the new window can fit in it
 233         fix_geometry();
 234
 235         // flush before clearing, otherwise the clear isn't effective.
 236         XFlush(server.dsp);
 237         // make sure the new child will get the right stuff in its background
 238         // for ParentRelative.
 239         XClearWindow(server.dsp, win);
 240
 241         // show the window
 242         XMapRaised(server.dsp, traywin->id);
 243
 244         return TRUE;
 245 }
 246
 247
 248 void net_message(XClientMessageEvent *e)
 249 {
 250         unsigned long opcode;
 251         Window id;
 252
 253         opcode = e->data.l[1];
 254
 255         switch (opcode) {
 256         case SYSTEM_TRAY_REQUEST_DOCK:
 257                 panel_refresh = 1;
 258                 id = e->data.l[2];
 259                 printf("add dockapp\n");
 260                 if (id && icon_add(id)) {
 261                         XSelectInput(server.dsp, id, StructureNotifyMask);
 262                 }
 263                 break;
 264
 265         case SYSTEM_TRAY_BEGIN_MESSAGE:
 266                 //g_printerr("Message From Dockapp\n");
 267                 id = e->window;
 268                 break;
 269
 270         case SYSTEM_TRAY_CANCEL_MESSAGE:
 271                 //g_printerr("Message Cancelled\n");
 272                 id = e->window;
 273                 break;
 274
 275         default:
 276                 if (opcode == server.atom._NET_SYSTEM_TRAY_MESSAGE_DATA) {
 277                         printf("message from dockapp:\n  %s\n", e->data.b);
 278                         id = e->window;
 279                 }
 280                 // unknown message type. not in the spec
 281                 break;
 282         }
 283 }
 284
 285
 286 /*
 287 void event_loop()
 288 {
 289   XEvent e;
 290   Window cover;
 291   GSList *it;
 292
 293   while (!exit_app) {
 294     while (XPending(server.dsp)) {
 295       XNextEvent(display, &e);
 296
 297       switch (e.type)
 298       {
 299       case PropertyNotify:
 300         // systray window list has changed?
 301         if (e.xproperty.atom == kde_systray_prop) {
 302           XSelectInput(display, win, NoEventMask);
 303           kde_update_icons();
 304           XSelectInput(display, win, StructureNotifyMask);
 305
 306           while (XCheckTypedEvent(display, PropertyNotify, &e));
 307         }
 308
 309         break;
 310
 311       case ConfigureNotify:
 312         if (e.xany.window != win) {
 313           // find the icon it pertains to and beat it into submission
 314           GSList *it;
 315
 316           for (it = icons; it != NULL; it = g_slist_next(it)) {
 317             TrayWindow *traywin = it->data;
 318             if (traywin->id == e.xany.window) {
 319               XMoveResizeWindow(display, traywin->id, traywin->x, traywin->y,
 320                                 icon_size, icon_size);
 321               break;
 322             }
 323           }
 324           break;
 325         }
 326
 327         // briefly cover the entire containing window, which causes it and
 328         // all of the icons to refresh their windows. finally, they update
 329         // themselves when the background of the main window's parent changes.
 330
 331         cover = XCreateSimpleWindow(display, win, 0, 0,
 332                                     border * 2 + width, border * 2 + height,
 333                                     0, 0, 0);
 334         XMapWindow(display, cover);
 335         XDestroyWindow(display, cover);
 336
 337         break;
 338
 339       case ReparentNotify:
 340         if (e.xany.window == win) // reparented to us
 341           break;
 342       case UnmapNotify:
 343       case DestroyNotify:
 344         for (it = icons; it; it = g_slist_next(it)) {
 345           if (((TrayWindow*)it->data)->id == e.xany.window) {
 346             icon_remove(it);
 347             break;
 348           }
 349         }
 350         break;
 351
 352       case ClientMessage:
 353         if (e.xclient.message_type == net_opcode_atom &&
 354             e.xclient.format == 32 &&
 355             e.xclient.window == net_sel_win)
 356           net_message(&e.xclient);
 357
 358       default:
 359         break;
 360       }
 361     }
 362     usleep(500000);
 363   }
 364
 365   // remove/unparent all the icons
 366   while (icons) {
 367     // do the remove here explicitly, cuz the event handler isn't going to
 368     // happen anymore.
 369     icon_remove(icons);
 370   }
 371 }
 372 */
 373