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