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