Dogcows Code - chaz/tint2/blob - src/systray/systraybar.c

   1 /**************************************************************************
   2 * Tint2 : systraybar
   3 *
   4 * Copyright (C) 2009 thierry lorthiois (lorthiois@bbsoft.fr)
   5 * based on 'docker-1.5' from Ben Jansens.
   6 *
   7 * This program is free software; you can redistribute it and/or
   8 * modify it under the terms of the GNU General Public License version 2
   9 * as published by the Free Software Foundation.
  10 *
  11 * This program is distributed in the hope that it will be useful,
  12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 * GNU General Public License for more details.
  15 * You should have received a copy of the GNU General Public License
  16 * along with this program; if not, write to the Free Software
  17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  18 **************************************************************************/
  19
  20 #include <X11/Xlib.h>
  21 #include <X11/Xutil.h>
  22 #include <X11/Xatom.h>
  23 #include <stdio.h>
  24 #include <stdlib.h>
  25 #include <string.h>
  26 #include <glib.h>
  27 #include <Imlib2.h>
  28
  29 #include "systraybar.h"
  30 #include "server.h"
  31 #include "panel.h"
  32
  33 GSList *icons;
  34
  35 /* defined in the systray spec */
  36 #define SYSTEM_TRAY_REQUEST_DOCK    0
  37 #define SYSTEM_TRAY_BEGIN_MESSAGE   1
  38 #define SYSTEM_TRAY_CANCEL_MESSAGE  2
  39
  40 // selection window
  41 Window net_sel_win = None, hint_win = None;
  42
  43 // freedesktop specification doesn't allow multi systray
  44 Systraybar systray;
  45 int refresh_systray;
  46
  47
  48 void init_systray()
  49 {
  50         Panel *panel = &panel1[0];
  51
  52         if (systray.area.on_screen)
  53                 systray.area.on_screen = init_net();
  54
  55         if (!systray.area.on_screen)
  56                 return;
  57
  58         systray.area.parent = panel;
  59         systray.area.panel = panel;
  60         systray.area._draw_foreground = draw_systray;
  61         systray.area._resize = resize_systray;
  62         systray.area.resize = 1;
  63         systray.area.redraw = 1;
  64         refresh_systray = 0;
  65
  66         // configure systray
  67         // draw only one systray (even with multi panel)
  68         if (panel_horizontal) {
  69                 systray.area.posy = panel->area.pix.border.width + panel->area.paddingy;
  70                 systray.area.height = panel->area.height - (2 * systray.area.posy);
  71         }
  72         else {
  73                 systray.area.posx = panel->area.pix.border.width + panel->area.paddingy;
  74                 systray.area.width = panel->area.width - (2 * panel->area.pix.border.width) - (2 * panel->area.paddingy);
  75         }
  76 }
  77
  78
  79 void cleanup_systray()
  80 {
  81    if (systray.list_icons) {
  82                 GSList *it;
  83
  84                 for (it = systray.list_icons; it; it = it->next)
  85                         remove_icon((TrayWindow*)it->data);
  86
  87       g_slist_free(systray.list_icons);
  88       systray.list_icons = 0;
  89    }
  90
  91         free_area(&systray.area);
  92         cleanup_net();
  93 }
  94
  95
  96 void draw_systray(void *obj, cairo_t *c, int active)
  97 {
  98         // tint2 don't draw systray icons. just the background.
  99         refresh_systray = 1;
 100 }
 101
 102
 103 void resize_systray(void *obj)
 104 {
 105         Systraybar *sysbar = obj;
 106         Panel *panel = sysbar->area.panel;
 107         TrayWindow *traywin;
 108         GSList *l;
 109         int count, posx, posy;
 110         int icon_size;
 111
 112         if (panel_horizontal)
 113                 icon_size = sysbar->area.height;
 114         else
 115                 icon_size = sysbar->area.width;
 116         icon_size = icon_size - (2 * sysbar->area.pix.border.width) - (2 * sysbar->area.paddingy);
 117         count = g_slist_length(systray.list_icons);
 118
 119         if (panel_horizontal) {
 120                 if (!count) systray.area.width = 0;
 121                 else systray.area.width = (2 * systray.area.pix.border.width) + (2 * systray.area.paddingxlr) + (icon_size * count) + ((count-1) * systray.area.paddingx);
 122
 123                 systray.area.posx = panel->area.width - panel->area.pix.border.width - panel->area.paddingxlr - systray.area.width;
 124                 if (panel->clock.area.on_screen)
 125                         systray.area.posx -= (panel->clock.area.width + panel->area.paddingx);
 126 #ifdef ENABLE_BATTERY
 127                 if (panel->battery.area.on_screen)
 128                         systray.area.posx -= (panel->battery.area.width + panel->area.paddingx);
 129 #endif
 130         }
 131         else {
 132                 if (!count) systray.area.height = 0;
 133                 else systray.area.height = (2 * systray.area.pix.border.width) + (2 * systray.area.paddingxlr) + (icon_size * count) + ((count-1) * systray.area.paddingx);
 134
 135                 systray.area.posy = panel->area.pix.border.width + panel->area.paddingxlr;
 136                 if (panel->clock.area.on_screen)
 137                         systray.area.posy += (panel->clock.area.height + panel->area.paddingx);
 138 #ifdef ENABLE_BATTERY
 139                 if (panel->battery.area.on_screen)
 140                         systray.area.posy += (panel->battery.area.height + panel->area.paddingx);
 141 #endif
 142         }
 143
 144         if (panel_horizontal) {
 145                 posy = panel->area.pix.border.width + panel->area.paddingy + systray.area.pix.border.width + systray.area.paddingy;
 146                 posx = systray.area.posx + systray.area.pix.border.width + systray.area.paddingxlr;
 147         }
 148         else {
 149                 posx = panel->area.pix.border.width + panel->area.paddingy + systray.area.pix.border.width + systray.area.paddingy;
 150                 posy = systray.area.posy + systray.area.pix.border.width + systray.area.paddingxlr;
 151         }
 152         for (l = systray.list_icons; l ; l = l->next) {
 153                 traywin = (TrayWindow*)l->data;
 154
 155                 traywin->y = posy;
 156                 traywin->x = posx;
 157                 traywin->width = icon_size;
 158                 traywin->height = icon_size;
 159                 if (panel_horizontal)
 160                         posx += (icon_size + systray.area.paddingx);
 161                 else
 162                         posy += (icon_size + systray.area.paddingx);
 163
 164                 // position and size the icon window
 165                 XMoveResizeWindow(server.dsp, traywin->id, traywin->x, traywin->y, icon_size, icon_size);
 166         }
 167 }
 168
 169
 170 // ***********************************************
 171 // systray protocol
 172
 173 int init_net()
 174 {
 175         // freedesktop systray specification
 176         if (XGetSelectionOwner(server.dsp, server.atom._NET_SYSTEM_TRAY_SCREEN) != None) {
 177                 fprintf(stderr, "tint2 : another systray is running\n");
 178                 return 0;
 179         }
 180
 181         // init systray protocol
 182    net_sel_win = XCreateSimpleWindow(server.dsp, server.root_win, -1, -1, 1, 1, 0, 0, 0);
 183
 184         // v0.2 trayer specification. tint2 always orizontal.
 185         // TODO : vertical panel ??
 186         int orient = 0;
 187         XChangeProperty(server.dsp, net_sel_win, server.atom._NET_SYSTEM_TRAY_ORIENTATION, XA_CARDINAL, 32, PropModeReplace, (unsigned char *) &orient, 1);
 188
 189         XSetSelectionOwner(server.dsp, server.atom._NET_SYSTEM_TRAY_SCREEN, net_sel_win, CurrentTime);
 190         if (XGetSelectionOwner(server.dsp, server.atom._NET_SYSTEM_TRAY_SCREEN) != net_sel_win) {
 191                 fprintf(stderr, "tint2 : can't get systray manager\n");
 192                 return 0;
 193         }
 194
 195    XClientMessageEvent ev;
 196         ev.type = ClientMessage;
 197    ev.window = server.root_win;
 198         ev.message_type = server.atom.MANAGER;
 199         ev.format = 32;
 200         ev.data.l[0] = CurrentTime;
 201         ev.data.l[1] = server.atom._NET_SYSTEM_TRAY_SCREEN;
 202         ev.data.l[2] = net_sel_win;
 203         ev.data.l[3] = 0;
 204         ev.data.l[4] = 0;
 205         XSendEvent(server.dsp, server.root_win, False, StructureNotifyMask, (XEvent*)&ev);
 206         return 1;
 207 }
 208
 209
 210 void cleanup_net()
 211 {
 212         if (net_sel_win != None) {
 213                 XDestroyWindow(server.dsp, net_sel_win);
 214                 net_sel_win = None;
 215         }
 216 }
 217
 218
 219 gboolean error;
 220 int window_error_handler(Display *d, XErrorEvent *e)
 221 {
 222         d=d;e=e;
 223         error = TRUE;
 224         if (e->error_code != BadWindow) {
 225                 printf("error_handler %d\n", e->error_code);
 226         }
 227         return 0;
 228 }
 229
 230
 231 gboolean add_icon(Window id)
 232 {
 233         TrayWindow *traywin;
 234         XErrorHandler old;
 235         Panel *panel = systray.area.panel;
 236
 237         error = FALSE;
 238         old = XSetErrorHandler(window_error_handler);
 239         XReparentWindow(server.dsp, id, panel->main_win, 0, 0);
 240         XSync(server.dsp, False);
 241         XSetErrorHandler(old);
 242         if (error != FALSE) {
 243                 fprintf(stderr, "tint2 : not icon_swallow\n");
 244                 return FALSE;
 245         }
 246
 247         {
 248                 Atom acttype;
 249                 int actfmt;
 250                 unsigned long nbitem, bytes;
 251                 unsigned char *data = 0;
 252                 int ret;
 253
 254                 ret = XGetWindowProperty(server.dsp, id, server.atom._XEMBED_INFO, 0, 2, False, server.atom._XEMBED_INFO, &acttype, &actfmt, &nbitem, &bytes, &data);
 255                 if (data) XFree(data);
 256                 if (ret != Success) {
 257                         fprintf(stderr, "tint2 : xembed error\n");
 258                         return FALSE;
 259                 }
 260         }
 261         {
 262                 XEvent e;
 263                 e.xclient.type = ClientMessage;
 264                 e.xclient.serial = 0;
 265                 e.xclient.send_event = True;
 266                 e.xclient.message_type = server.atom._XEMBED;
 267                 e.xclient.window = id;
 268                 e.xclient.format = 32;
 269                 e.xclient.data.l[0] = CurrentTime;
 270                 e.xclient.data.l[1] = XEMBED_EMBEDDED_NOTIFY;
 271                 e.xclient.data.l[2] = 0;
 272                 e.xclient.data.l[3] = panel->main_win;
 273                 e.xclient.data.l[4] = 0;
 274                 XSendEvent(server.dsp, id, False, 0xFFFFFF, &e);
 275         }
 276
 277         traywin = g_new0(TrayWindow, 1);
 278         traywin->id = id;
 279
 280         systray.list_icons = g_slist_prepend(systray.list_icons, traywin);
 281         systray.area.resize = 1;
 282         systray.area.redraw = 1;
 283         //printf("add_icon id %lx, %d\n", id, g_slist_length(systray.list_icons));
 284
 285         // watch for the icon trying to resize itself!
 286         XSelectInput(server.dsp, traywin->id, StructureNotifyMask);
 287
 288         // show the window
 289         XMapRaised(server.dsp, traywin->id);
 290
 291         // changed in systray force resize on panel
 292         panel->area.resize = 1;
 293         panel_refresh = 1;
 294         return TRUE;
 295 }
 296
 297
 298 void remove_icon(TrayWindow *traywin)
 299 {
 300         XErrorHandler old;
 301         Window id = traywin->id;
 302
 303         // remove from our list
 304         systray.list_icons = g_slist_remove(systray.list_icons, traywin);
 305         g_free(traywin);
 306         systray.area.resize = 1;
 307         systray.area.redraw = 1;
 308         //printf("remove_icon id %lx, %d\n", traywin->id);
 309
 310         XSelectInput(server.dsp, id, NoEventMask);
 311
 312         // reparent to root
 313         error = FALSE;
 314         old = XSetErrorHandler(window_error_handler);
 315         XUnmapWindow(server.dsp, id);
 316         XReparentWindow(server.dsp, id, server.root_win, 0, 0);
 317         XSync(server.dsp, False);
 318         XSetErrorHandler(old);
 319
 320         // changed in systray force resize on panel
 321         Panel *panel = systray.area.panel;
 322         panel->area.resize = 1;
 323         panel_refresh = 1;
 324 }
 325
 326
 327 void net_message(XClientMessageEvent *e)
 328 {
 329         unsigned long opcode;
 330         Window id;
 331
 332         opcode = e->data.l[1];
 333         switch (opcode) {
 334                 case SYSTEM_TRAY_REQUEST_DOCK:
 335                         id = e->data.l[2];
 336                         if (id) add_icon(id);
 337                         break;
 338
 339                 case SYSTEM_TRAY_BEGIN_MESSAGE:
 340                 case SYSTEM_TRAY_CANCEL_MESSAGE:
 341                         // we don't show baloons messages.
 342                         break;
 343
 344                 default:
 345                         if (opcode == server.atom._NET_SYSTEM_TRAY_MESSAGE_DATA)
 346                                 printf("message from dockapp: %s\n", e->data.b);
 347                         else
 348                                 fprintf(stderr, "SYSTEM_TRAY : unknown message type\n");
 349                         break;
 350         }
 351 }
 352
 353
 354 void refresh_systray_icon()
 355 {
 356         TrayWindow *traywin;
 357         GSList *l;
 358         for (l = systray.list_icons; l ; l = l->next) {
 359                 traywin = (TrayWindow*)l->data;
 360                 XClearArea(server.dsp, traywin->id, 0, 0, traywin->width, traywin->height, True);
 361         }
 362 }
 363
 364