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, hint_win = None;
  41
  42 // freedesktop specification doesn't allow multi systray
  43 Systraybar systray;
  44
  45
  46 void init_systray()
  47 {
  48         Panel *panel = &panel1[0];
  49         systray.area.parent = panel;
  50         systray.area.panel = panel;
  51         systray.area._draw_foreground = draw_systray;
  52         systray.area._resize = resize_systray;
  53
  54         if (systray.area.on_screen)
  55                 systray.area.on_screen = init_net();
  56
  57         if (!systray.area.on_screen)
  58                 return;
  59
  60         // configure systray
  61         // draw only one systray (even with multi panel)
  62         systray.area.posy = panel->area.pix.border.width + panel->area.paddingy;
  63         systray.area.height = panel->area.height - (2 * systray.area.posy);
  64         systray.area.width = 0;
  65
  66         systray.area.posx = panel->area.width - panel->area.paddingxlr - panel->area.pix.border.width - systray.area.width;
  67         if (panel->clock.area.on_screen)
  68                 systray.area.posx -= (panel->clock.area.width + panel->area.paddingx);
  69         if (panel->battery.area.on_screen)
  70                 systray.area.posx -= (panel->battery.area.width + panel->area.paddingx);
  71
  72         systray.area.redraw = 1;
  73 }
  74
  75
  76 void cleanup_systray()
  77 {
  78    if (systray.list_icons) {
  79                 GSList *it;
  80
  81                 for (it = systray.list_icons; it; it = it->next)
  82                         remove_icon((TrayWindow*)it->data);
  83
  84       g_slist_free(systray.list_icons);
  85       systray.list_icons = 0;
  86    }
  87
  88         free_area(&systray.area);
  89
  90         cleanup_net();
  91 }
  92
  93
  94 void draw_systray(void *obj, cairo_t *c, int active)
  95 {
  96         Systraybar *sysbar = obj;
  97         Panel *panel = sysbar->area.panel;
  98         TrayWindow *traywin;
  99         GSList *l;
 100         int icon_size;
 101
 102         //printf("draw_systray %d %d\n", systray.area.posx, systray.area.width);
 103         icon_size = sysbar->area.height - (2 * sysbar->area.pix.border.width) - (2 * sysbar->area.paddingy);
 104         for (l = systray.list_icons; l ; l = l->next) {
 105                 traywin = (TrayWindow*)l->data;
 106
 107                 // watch for the icon trying to resize itself!
 108                 XSelectInput(server.dsp, traywin->id, StructureNotifyMask|ResizeRedirectMask);
 109
 110                 // position and size the icon window
 111                 XMoveResizeWindow(server.dsp, traywin->id, traywin->x, traywin->y, icon_size, icon_size);
 112                 XSetWindowBackgroundPixmap (server.dsp, panel->main_win, systray.area.pix.pmap);
 113
 114                 // resize our window so that the new window can fit in it
 115                 //fix_geometry();
 116
 117                 // flush before clearing, otherwise the clear isn't effective.
 118                 XFlush(server.dsp);
 119                 // make sure the new child will get the right stuff in its background
 120                 // for ParentRelative.
 121                 XClearWindow(server.dsp, panel->main_win);
 122
 123                 // show the window
 124                 XMapRaised(server.dsp, traywin->id);
 125         }
 126 }
 127
 128
 129 void resize_systray(void *obj)
 130 {
 131         Systraybar *sysbar = obj;
 132         Panel *panel = sysbar->area.panel;
 133         TrayWindow *traywin;
 134         GSList *l;
 135         int count, posx, posy;
 136         int icon_size;
 137
 138         icon_size = sysbar->area.height - (2 * sysbar->area.pix.border.width) - (2 * sysbar->area.paddingy);
 139         count = g_slist_length(systray.list_icons);
 140
 141         if (!count) systray.area.width = 0;
 142         else systray.area.width = (2 * systray.area.pix.border.width) + (2 * systray.area.paddingxlr) + (icon_size * count) + ((count-1) * systray.area.paddingx);
 143
 144         systray.area.posx = panel->area.width - panel->area.pix.border.width - panel->area.paddingxlr - systray.area.width;
 145         if (panel->clock.area.on_screen)
 146                 systray.area.posx -= (panel->clock.area.width + panel->area.paddingx);
 147         if (panel->battery.area.on_screen)
 148                 systray.area.posx -= (panel->battery.area.width + panel->area.paddingx);
 149
 150         systray.area.redraw = 1;
 151
 152         posy = panel->area.pix.border.width + panel->area.paddingy + systray.area.pix.border.width + systray.area.paddingy;
 153         posx = systray.area.posx + systray.area.pix.border.width + systray.area.paddingxlr;
 154         for (l = systray.list_icons; l ; l = l->next) {
 155                 traywin = (TrayWindow*)l->data;
 156
 157                 traywin->y = posy;
 158                 traywin->x = posx;
 159                 posx += (icon_size + systray.area.paddingx);
 160         }
 161
 162         // resize other objects on panel
 163         printf("resize_systray %d %d\n", systray.area.posx, systray.area.width);
 164 }
 165
 166 /*
 167 void create_hint_win()
 168 {
 169    XWMHints hints;
 170    XClassHint classhints;
 171         Panel *panel = systray.area.panel;
 172
 173         hint_win = XCreateSimpleWindow(server.dsp, server.root_win, 0, 0, 1, 1, 0, 0, 0);
 174
 175         hints.flags = StateHint | WindowGroupHint | IconWindowHint;
 176         hints.initial_state = WithdrawnState;
 177         hints.window_group = hint_win;
 178         hints.icon_window = panel->main_win;
 179
 180         classhints.res_name = "docker";
 181         classhints.res_class = "Docker";
 182
 183         XSetWMProperties(server.dsp, hint_win, NULL, NULL, NULL, 0,
 184                                                  NULL, &hints, &classhints);
 185
 186         XMapWindow(server.dsp, hint_win);
 187 }
 188 */
 189
 190 int init_net()
 191 {
 192         if (XGetSelectionOwner(server.dsp, server.atom._NET_SYSTEM_TRAY_SCREEN) != None) {
 193                 fprintf(stderr, "tint2 : another systray is running\n");
 194                 return 0;
 195         }
 196
 197         //create_hint_win();
 198
 199         // init systray protocol
 200    net_sel_win = XCreateSimpleWindow(server.dsp, server.root_win, -1, -1, 1, 1, 0, 0, 0);
 201
 202         // v0.2 trayer specification. tint2 always orizontal.
 203         int orient = 0;
 204         XChangeProperty(server.dsp, net_sel_win, server.atom._NET_SYSTEM_TRAY_ORIENTATION, XA_CARDINAL, 32, PropModeReplace, (unsigned char *) &orient, 1);
 205
 206         XSetSelectionOwner(server.dsp, server.atom._NET_SYSTEM_TRAY_SCREEN, net_sel_win, CurrentTime);
 207         if (XGetSelectionOwner(server.dsp, server.atom._NET_SYSTEM_TRAY_SCREEN) != net_sel_win) {
 208                 fprintf(stderr, "tint2 : can't get systray manager\n");
 209                 return 0;
 210         }
 211
 212    XClientMessageEvent ev;
 213         ev.type = ClientMessage;
 214    ev.window = server.root_win;
 215         ev.message_type = server.atom.MANAGER;
 216         ev.format = 32;
 217         ev.data.l[0] = CurrentTime;
 218         ev.data.l[1] = server.atom._NET_SYSTEM_TRAY_SCREEN;
 219         ev.data.l[2] = net_sel_win;
 220         ev.data.l[3] = 0;
 221         ev.data.l[4] = 0;
 222         XSendEvent(server.dsp, server.root_win, False, StructureNotifyMask, (XEvent*)&ev);
 223
 224         return 1;
 225 }
 226
 227
 228 void cleanup_net()
 229 {
 230         if (net_sel_win != None) {
 231                 XDestroyWindow(server.dsp, net_sel_win);
 232                 net_sel_win = None;
 233         }
 234 }
 235
 236
 237 /*
 238 void fix_geometry()
 239 {
 240   GSList *it;
 241   Panel *panel = systray.area.panel;
 242
 243   // find the proper width and height
 244   width = 0;
 245   height = icon_size;
 246   for (it = icons; it != NULL; it = g_slist_next(it)) {
 247     width += icon_size;
 248   }
 249
 250   XResizeWindow(server.dsp, panel->main_win, width + border * 2, height + border * 2);
 251 }
 252 */
 253
 254 gboolean error;
 255 int window_error_handler(Display *d, XErrorEvent *e)
 256 {
 257   d=d;e=e;
 258   if (e->error_code == BadWindow) {
 259     error = TRUE;
 260   } else {
 261     //g_printerr("X ERROR NOT BAD WINDOW!\n");
 262     abort();
 263   }
 264   return 0;
 265 }
 266
 267
 268 gboolean icon_swallow(Window id)
 269 {
 270   XErrorHandler old;
 271   Panel *panel = systray.area.panel;
 272
 273   error = FALSE;
 274   old = XSetErrorHandler(window_error_handler);
 275   XReparentWindow(server.dsp, id, panel->main_win, 0, 0);
 276   XSync(server.dsp, False);
 277   XSetErrorHandler(old);
 278
 279   return !error;
 280 }
 281
 282
 283 // The traywin must have its id and type set.
 284 gboolean add_icon(Window id)
 285 {
 286         TrayWindow *traywin;
 287
 288         if (!icon_swallow(id)) {
 289                 fprintf(stderr, "tint2 : not icon_swallow\n");
 290                 return FALSE;
 291         }
 292
 293         traywin = g_new0(TrayWindow, 1);
 294         traywin->id = id;
 295
 296         systray.list_icons = g_slist_prepend(systray.list_icons, traywin);
 297         printf("ajout d'un icone %d (%lx)\n", g_slist_length(systray.list_icons), id);
 298         systray.area.resize = 1;
 299         systray.area.redraw = 1;
 300
 301         // changed in systray force resize on panel
 302         Panel *panel = systray.area.panel;
 303         panel->area.resize = 1;
 304         panel_refresh = 1;
 305
 306 // => calcul x, y, width, height dans resize
 307 /*
 308         // find the positon for the systray app window
 309         int count = g_slist_length(icons);
 310         traywin->x = border + ((width % icon_size) / 2) +
 311         (count % (width / icon_size)) * icon_size;
 312         traywin->y = border + ((height % icon_size) / 2) +
 313         (count / (height / icon_size)) * icon_size;
 314
 315         // add the new icon to the list
 316         icons = g_slist_append(icons, traywin);
 317 */
 318
 319         return TRUE;
 320 }
 321
 322
 323 void remove_icon(TrayWindow *traywin)
 324 {
 325         XErrorHandler old;
 326
 327         XSelectInput(server.dsp, traywin->id, NoEventMask);
 328
 329         // reparent to root
 330         error = FALSE;
 331         old = XSetErrorHandler(window_error_handler);
 332         XReparentWindow(server.dsp, traywin->id, server.root_win, 0, 0);
 333         XSync(server.dsp, False);
 334         XSetErrorHandler(old);
 335
 336         // remove from our list
 337         systray.list_icons = g_slist_remove(systray.list_icons, traywin);
 338         g_free(traywin);
 339         printf("suppression d'un icone %d\n", g_slist_length(systray.list_icons));
 340         systray.area.resize = 1;
 341
 342         // changed in systray force resize on panel
 343         Panel *panel = systray.area.panel;
 344         panel->area.resize = 1;
 345         panel_refresh = 1;
 346
 347 }
 348
 349
 350 void net_message(XClientMessageEvent *e)
 351 {
 352         unsigned long opcode;
 353         Window id;
 354
 355         opcode = e->data.l[1];
 356
 357         switch (opcode) {
 358                 case SYSTEM_TRAY_REQUEST_DOCK:
 359                         id = e->data.l[2];
 360                         if (id) add_icon(id);
 361                         break;
 362
 363                 case SYSTEM_TRAY_BEGIN_MESSAGE:
 364                         printf("message from dockapp\n");
 365                         id = e->window;
 366                         break;
 367
 368                 case SYSTEM_TRAY_CANCEL_MESSAGE:
 369                         printf("message cancelled\n");
 370                         id = e->window;
 371                         break;
 372
 373                 default:
 374                         if (opcode == server.atom._NET_SYSTEM_TRAY_MESSAGE_DATA) {
 375                                 printf("message from dockapp:\n  %s\n", e->data.b);
 376                                 id = e->window;
 377                         }
 378                         // unknown message type. not in the spec
 379                         break;
 380         }
 381 }
 382
 383
 384