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         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 int init_net()
 163 {
 164         if (XGetSelectionOwner(server.dsp, server.atom._NET_SYSTEM_TRAY_SCREEN) != None) {
 165                 fprintf(stderr, "tint2 : another systray is running\n");
 166                 return 0;
 167         }
 168
 169         // init systray protocol
 170    net_sel_win = XCreateSimpleWindow(server.dsp, server.root_win, -1, -1, 1, 1, 0, 0, 0);
 171
 172         // v0.2 trayer specification. tint2 always orizontal.
 173         int orient = 0;
 174         XChangeProperty(server.dsp, net_sel_win, server.atom._NET_SYSTEM_TRAY_ORIENTATION, XA_CARDINAL, 32, PropModeReplace, (unsigned char *) &orient, 1);
 175
 176         XSetSelectionOwner(server.dsp, server.atom._NET_SYSTEM_TRAY_SCREEN, net_sel_win, CurrentTime);
 177         if (XGetSelectionOwner(server.dsp, server.atom._NET_SYSTEM_TRAY_SCREEN) != net_sel_win) {
 178                 fprintf(stderr, "tint2 : can't get systray manager\n");
 179                 return 0;
 180         }
 181
 182    XClientMessageEvent ev;
 183         ev.type = ClientMessage;
 184    ev.window = server.root_win;
 185         ev.message_type = server.atom.MANAGER;
 186         ev.format = 32;
 187         ev.data.l[0] = CurrentTime;
 188         ev.data.l[1] = server.atom._NET_SYSTEM_TRAY_SCREEN;
 189         ev.data.l[2] = net_sel_win;
 190         ev.data.l[3] = 0;
 191         ev.data.l[4] = 0;
 192         XSendEvent(server.dsp, server.root_win, False, StructureNotifyMask, (XEvent*)&ev);
 193
 194         return 1;
 195 }
 196
 197
 198 void cleanup_net()
 199 {
 200         if (net_sel_win != None) {
 201                 XDestroyWindow(server.dsp, net_sel_win);
 202                 net_sel_win = None;
 203         }
 204 }
 205
 206 /*
 207 void fix_geometry()
 208 {
 209   GSList *it;
 210   Panel *panel = systray.area.panel;
 211
 212   // find the proper width and height
 213   width = 0;
 214   height = icon_size;
 215   for (it = icons; it != NULL; it = g_slist_next(it)) {
 216     width += icon_size;
 217   }
 218
 219   XResizeWindow(server.dsp, panel->main_win, width + border * 2, height + border * 2);
 220 }
 221 */
 222
 223 gboolean error;
 224 int window_error_handler(Display *d, XErrorEvent *e)
 225 {
 226   d=d;e=e;
 227   if (e->error_code == BadWindow) {
 228     error = TRUE;
 229   } else {
 230     //g_printerr("X ERROR NOT BAD WINDOW!\n");
 231     abort();
 232   }
 233   return 0;
 234 }
 235
 236
 237 gboolean icon_swallow(Window id)
 238 {
 239   XErrorHandler old;
 240   Panel *panel = systray.area.panel;
 241
 242   error = FALSE;
 243   old = XSetErrorHandler(window_error_handler);
 244   XReparentWindow(server.dsp, id, panel->main_win, 0, 0);
 245   XSync(server.dsp, False);
 246   XSetErrorHandler(old);
 247
 248   return !error;
 249 }
 250
 251
 252 // The traywin must have its id and type set.
 253 gboolean add_icon(Window id)
 254 {
 255         TrayWindow *traywin;
 256
 257         if (!icon_swallow(id)) {
 258                 fprintf(stderr, "tint2 : not icon_swallow\n");
 259                 return FALSE;
 260         }
 261
 262         traywin = g_new0(TrayWindow, 1);
 263         traywin->id = id;
 264
 265         systray.list_icons = g_slist_prepend(systray.list_icons, traywin);
 266         printf("ajout d'un icone %d (%lx)\n", g_slist_length(systray.list_icons), id);
 267         systray.area.resize = 1;
 268         systray.area.redraw = 1;
 269
 270         // changed in systray force resize on panel
 271         Panel *panel = systray.area.panel;
 272         panel->area.resize = 1;
 273         panel_refresh = 1;
 274
 275 // => calcul x, y, width, height dans resize
 276 /*
 277         // find the positon for the systray app window
 278         int count = g_slist_length(icons);
 279         traywin->x = border + ((width % icon_size) / 2) +
 280         (count % (width / icon_size)) * icon_size;
 281         traywin->y = border + ((height % icon_size) / 2) +
 282         (count / (height / icon_size)) * icon_size;
 283
 284         // add the new icon to the list
 285         icons = g_slist_append(icons, traywin);
 286 */
 287
 288         return TRUE;
 289 }
 290
 291
 292 void remove_icon(TrayWindow *traywin)
 293 {
 294         XErrorHandler old;
 295
 296         XSelectInput(server.dsp, traywin->id, NoEventMask);
 297
 298         // reparent to root
 299         error = FALSE;
 300         old = XSetErrorHandler(window_error_handler);
 301         XReparentWindow(server.dsp, traywin->id, server.root_win, 0, 0);
 302         XSync(server.dsp, False);
 303         XSetErrorHandler(old);
 304
 305         // remove from our list
 306         systray.list_icons = g_slist_remove(systray.list_icons, traywin);
 307         g_free(traywin);
 308         printf("suppression d'un icone %d\n", g_slist_length(systray.list_icons));
 309         systray.area.resize = 1;
 310
 311         // changed in systray force resize on panel
 312         Panel *panel = systray.area.panel;
 313         panel->area.resize = 1;
 314         panel_refresh = 1;
 315
 316 }
 317
 318
 319 void net_message(XClientMessageEvent *e)
 320 {
 321         unsigned long opcode;
 322         Window id;
 323
 324         opcode = e->data.l[1];
 325
 326         switch (opcode) {
 327                 case SYSTEM_TRAY_REQUEST_DOCK:
 328                         id = e->data.l[2];
 329                         if (id) add_icon(id);
 330                         break;
 331
 332                 case SYSTEM_TRAY_BEGIN_MESSAGE:
 333                         printf("message from dockapp\n");
 334                         id = e->window;
 335                         break;
 336
 337                 case SYSTEM_TRAY_CANCEL_MESSAGE:
 338                         printf("message cancelled\n");
 339                         id = e->window;
 340                         break;
 341
 342                 default:
 343                         if (opcode == server.atom._NET_SYSTEM_TRAY_MESSAGE_DATA) {
 344                                 printf("message from dockapp:\n  %s\n", e->data.b);
 345                                 id = e->window;
 346                         }
 347                         // unknown message type. not in the spec
 348                         break;
 349         }
 350 }
 351
 352
 353