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         if (systray.area.on_screen)
  51                 systray.area.on_screen = init_net();
  52
  53         if (!systray.area.on_screen)
  54                 return;
  55
  56         systray.area._draw_foreground = draw_systray;
  57         systray.area._resize = resize_systray;
  58         systray.area.resize = 1;
  59         systray.area.redraw = 1;
  60         refresh_systray = 0;
  61 }
  62
  63
  64 void init_systray_panel(void *p)
  65 {
  66         Panel *panel =(Panel*)p;
  67
  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         systray.area.parent = p;
  77         systray.area.panel = p;
  78 }
  79
  80
  81 void cleanup_systray()
  82 {
  83         if (systray.list_icons) {
  84                 // remove_icon change systray.list_icons
  85                 while(systray.list_icons)
  86                         remove_icon((TrayWindow*)systray.list_icons->data);
  87
  88                 g_slist_free(systray.list_icons);
  89                 systray.list_icons = 0;
  90         }
  91
  92         free_area(&systray.area);
  93         cleanup_net();
  94 }
  95
  96
  97 void draw_systray(void *obj, cairo_t *c, int active)
  98 {
  99         // tint2 don't draw systray icons. just the background.
 100         refresh_systray = 1;
 101 }
 102
 103
 104 void resize_systray(void *obj)
 105 {
 106         Systraybar *sysbar = obj;
 107         Panel *panel = sysbar->area.panel;
 108         TrayWindow *traywin;
 109         GSList *l;
 110         int count, posx, posy;
 111         int icon_size;
 112
 113         if (panel_horizontal)
 114                 icon_size = sysbar->area.height;
 115         else
 116                 icon_size = sysbar->area.width;
 117         icon_size = icon_size - (2 * sysbar->area.pix.border.width) - (2 * sysbar->area.paddingy);
 118         count = 0;
 119         for (l = systray.list_icons; l ; l = l->next) {
 120                 if (!((TrayWindow*)l->data)->hide)
 121                         count++;
 122         }
 123         //printf("count %d\n", count);
 124
 125         if (panel_horizontal) {
 126                 if (!count) systray.area.width = 0;
 127                 else systray.area.width = (2 * systray.area.pix.border.width) + (2 * systray.area.paddingxlr) + (icon_size * count) + ((count-1) * systray.area.paddingx);
 128
 129                 systray.area.posx = panel->area.width - panel->area.pix.border.width - panel->area.paddingxlr - systray.area.width;
 130                 if (panel->clock.area.on_screen)
 131                         systray.area.posx -= (panel->clock.area.width + panel->area.paddingx);
 132 #ifdef ENABLE_BATTERY
 133                 if (panel->battery.area.on_screen)
 134                         systray.area.posx -= (panel->battery.area.width + panel->area.paddingx);
 135 #endif
 136         }
 137         else {
 138                 if (!count) systray.area.height = 0;
 139                 else systray.area.height = (2 * systray.area.pix.border.width) + (2 * systray.area.paddingxlr) + (icon_size * count) + ((count-1) * systray.area.paddingx);
 140
 141                 systray.area.posy = panel->area.pix.border.width + panel->area.paddingxlr;
 142                 if (panel->clock.area.on_screen)
 143                         systray.area.posy += (panel->clock.area.height + panel->area.paddingx);
 144 #ifdef ENABLE_BATTERY
 145                 if (panel->battery.area.on_screen)
 146                         systray.area.posy += (panel->battery.area.height + panel->area.paddingx);
 147 #endif
 148         }
 149
 150         if (panel_horizontal) {
 151                 posy = panel->area.pix.border.width + panel->area.paddingy + systray.area.pix.border.width + systray.area.paddingy;
 152                 posx = systray.area.posx + systray.area.pix.border.width + systray.area.paddingxlr;
 153         }
 154         else {
 155                 posx = panel->area.pix.border.width + panel->area.paddingy + systray.area.pix.border.width + systray.area.paddingy;
 156                 posy = systray.area.posy + systray.area.pix.border.width + systray.area.paddingxlr;
 157         }
 158         for (l = systray.list_icons; l ; l = l->next) {
 159                 traywin = (TrayWindow*)l->data;
 160                 if (traywin->hide) continue;
 161
 162                 traywin->y = posy;
 163                 traywin->x = posx;
 164                 traywin->width = icon_size;
 165                 traywin->height = icon_size;
 166                 if (panel_horizontal)
 167                         posx += (icon_size + systray.area.paddingx);
 168                 else
 169                         posy += (icon_size + systray.area.paddingx);
 170
 171                 // position and size the icon window
 172                 XMoveResizeWindow(server.dsp, traywin->id, traywin->x, traywin->y, icon_size, icon_size);
 173         }
 174 }
 175
 176
 177 // ***********************************************
 178 // systray protocol
 179
 180 int init_net()
 181 {
 182         Window win = XGetSelectionOwner(server.dsp, server.atom._NET_SYSTEM_TRAY_SCREEN);
 183
 184         // freedesktop systray specification
 185         if (win != None) {
 186                 // search pid
 187                 Atom _NET_WM_PID, actual_type;
 188                 int actual_format;
 189                 unsigned long nitems;
 190                 unsigned long bytes_after;
 191                 unsigned char *prop = 0;
 192                 int pid;
 193
 194                 _NET_WM_PID = XInternAtom(server.dsp, "_NET_WM_PID", True);
 195                 int ret = XGetWindowProperty(server.dsp, win, _NET_WM_PID, 0, 1024, False, AnyPropertyType, &actual_type, &actual_format, &nitems, &bytes_after, &prop);
 196
 197                 fprintf(stderr, "tint2 : another systray is running");
 198                 if (ret == Success && prop) {
 199                         pid = prop[1] * 256;
 200                         pid += prop[0];
 201                         fprintf(stderr, " pid=%d", pid);
 202                 }
 203                 fprintf(stderr, "\n");
 204                 return 0;
 205         }
 206
 207         // init systray protocol
 208         net_sel_win = XCreateSimpleWindow(server.dsp, server.root_win, -1, -1, 1, 1, 0, 0, 0);
 209
 210         // v0.2 trayer specification. tint2 always horizontal.
 211         // Vertical panel will draw the systray horizontal.
 212         int orient = 0;
 213         XChangeProperty(server.dsp, net_sel_win, server.atom._NET_SYSTEM_TRAY_ORIENTATION, XA_CARDINAL, 32, PropModeReplace, (unsigned char *) &orient, 1);
 214
 215         XSetSelectionOwner(server.dsp, server.atom._NET_SYSTEM_TRAY_SCREEN, net_sel_win, CurrentTime);
 216         if (XGetSelectionOwner(server.dsp, server.atom._NET_SYSTEM_TRAY_SCREEN) != net_sel_win) {
 217                 fprintf(stderr, "tint2 : can't get systray manager\n");
 218                 return 0;
 219         }
 220
 221         XClientMessageEvent ev;
 222         ev.type = ClientMessage;
 223         ev.window = server.root_win;
 224         ev.message_type = server.atom.MANAGER;
 225         ev.format = 32;
 226         ev.data.l[0] = CurrentTime;
 227         ev.data.l[1] = server.atom._NET_SYSTEM_TRAY_SCREEN;
 228         ev.data.l[2] = net_sel_win;
 229         ev.data.l[3] = 0;
 230         ev.data.l[4] = 0;
 231         XSendEvent(server.dsp, server.root_win, False, StructureNotifyMask, (XEvent*)&ev);
 232         return 1;
 233 }
 234
 235
 236 void cleanup_net()
 237 {
 238         if (net_sel_win != None) {
 239                 XDestroyWindow(server.dsp, net_sel_win);
 240                 net_sel_win = None;
 241         }
 242 }
 243
 244
 245 gboolean error;
 246 int window_error_handler(Display *d, XErrorEvent *e)
 247 {
 248         d=d;e=e;
 249         error = TRUE;
 250         if (e->error_code != BadWindow) {
 251                 printf("error_handler %d\n", e->error_code);
 252         }
 253         return 0;
 254 }
 255
 256
 257 static gint compare_traywindows(gconstpointer a, gconstpointer b)
 258 {
 259         const TrayWindow * traywin_a = (TrayWindow*)a;
 260         const TrayWindow * traywin_b = (TrayWindow*)b;
 261         XTextProperty name_a, name_b;
 262
 263         if(XGetWMName(server.dsp, traywin_a->id, &name_a) == 0) {
 264                 return -1;
 265         }
 266         else if(XGetWMName(server.dsp, traywin_b->id, &name_b) == 0) {
 267                 XFree(name_a.value);
 268                 return 1;
 269         }
 270         else {
 271                 gint retval = g_ascii_strncasecmp((char*)name_a.value, (char*)name_b.value, -1) * systray.sort;
 272                 XFree(name_a.value);
 273                 XFree(name_b.value);
 274                 return retval;
 275         }
 276 }
 277
 278
 279 gboolean add_icon(Window id)
 280 {
 281         TrayWindow *traywin;
 282         XErrorHandler old;
 283         Panel *panel = systray.area.panel;
 284         int hide = 0;
 285
 286         error = FALSE;
 287         old = XSetErrorHandler(window_error_handler);
 288         XReparentWindow(server.dsp, id, panel->main_win, 0, 0);
 289         XSync(server.dsp, False);
 290         XSetErrorHandler(old);
 291         if (error != FALSE) {
 292                 fprintf(stderr, "tint2 : not icon_swallow\n");
 293                 return FALSE;
 294         }
 295
 296         {
 297                 Atom acttype;
 298                 int actfmt;
 299                 unsigned long nbitem, bytes;
 300                 unsigned char *data = 0;
 301                 int ret;
 302
 303                 ret = XGetWindowProperty(server.dsp, id, server.atom._XEMBED_INFO, 0, 2, False, server.atom._XEMBED_INFO, &acttype, &actfmt, &nbitem, &bytes, &data);
 304                 if (ret == Success) {
 305                         if (data) {
 306                                 if (nbitem == 2) {
 307                                         //hide = ((data[1] & XEMBED_MAPPED) == 0);
 308                                         //printf("hide %d\n", hide);
 309                                 }
 310                                 XFree(data);
 311                         }
 312                 }
 313                 else {
 314                         fprintf(stderr, "tint2 : xembed error\n");
 315                         return FALSE;
 316                 }
 317         }
 318         {
 319                 XEvent e;
 320                 e.xclient.type = ClientMessage;
 321                 e.xclient.serial = 0;
 322                 e.xclient.send_event = True;
 323                 e.xclient.message_type = server.atom._XEMBED;
 324                 e.xclient.window = id;
 325                 e.xclient.format = 32;
 326                 e.xclient.data.l[0] = CurrentTime;
 327                 e.xclient.data.l[1] = XEMBED_EMBEDDED_NOTIFY;
 328                 e.xclient.data.l[2] = 0;
 329                 e.xclient.data.l[3] = panel->main_win;
 330                 e.xclient.data.l[4] = 0;
 331                 XSendEvent(server.dsp, id, False, 0xFFFFFF, &e);
 332         }
 333
 334         traywin = g_new0(TrayWindow, 1);
 335         traywin->id = id;
 336         traywin->hide = hide;
 337
 338         if (systray.sort == 3)
 339                 systray.list_icons = g_slist_prepend(systray.list_icons, traywin);
 340         else if (systray.sort == 2)
 341                 systray.list_icons = g_slist_append(systray.list_icons, traywin);
 342         else
 343                 systray.list_icons = g_slist_insert_sorted(systray.list_icons, traywin, compare_traywindows);
 344         systray.area.resize = 1;
 345         systray.area.redraw = 1;
 346         //printf("add_icon id %lx, %d\n", id, g_slist_length(systray.list_icons));
 347
 348         // watch for the icon trying to resize itself!
 349         XSelectInput(server.dsp, traywin->id, StructureNotifyMask);
 350
 351         // show the window
 352         if (!traywin->hide)
 353                 XMapRaised(server.dsp, traywin->id);
 354
 355         // changed in systray force resize on panel
 356         panel->area.resize = 1;
 357         panel_refresh = 1;
 358         return TRUE;
 359 }
 360
 361
 362 void remove_icon(TrayWindow *traywin)
 363 {
 364         XErrorHandler old;
 365
 366         // remove from our list
 367         systray.list_icons = g_slist_remove(systray.list_icons, traywin);
 368         g_free(traywin);
 369         systray.area.resize = 1;
 370         systray.area.redraw = 1;
 371         //printf("remove_icon id %lx, %d\n", traywin->id);
 372
 373         XSelectInput(server.dsp, traywin->id, NoEventMask);
 374
 375         // reparent to root
 376         error = FALSE;
 377         old = XSetErrorHandler(window_error_handler);
 378         if (!traywin->hide)
 379                 XUnmapWindow(server.dsp, traywin->id);
 380         XReparentWindow(server.dsp, traywin->id, server.root_win, 0, 0);
 381         XSync(server.dsp, False);
 382         XSetErrorHandler(old);
 383
 384         // changed in systray force resize on panel
 385         Panel *panel = systray.area.panel;
 386         panel->area.resize = 1;
 387         panel_refresh = 1;
 388 }
 389
 390
 391 void net_message(XClientMessageEvent *e)
 392 {
 393         unsigned long opcode;
 394         Window id;
 395
 396         opcode = e->data.l[1];
 397         switch (opcode) {
 398                 case SYSTEM_TRAY_REQUEST_DOCK:
 399                         id = e->data.l[2];
 400                         if (id) add_icon(id);
 401                         break;
 402
 403                 case SYSTEM_TRAY_BEGIN_MESSAGE:
 404                 case SYSTEM_TRAY_CANCEL_MESSAGE:
 405                         // we don't show baloons messages.
 406                         break;
 407
 408                 default:
 409                         if (opcode == server.atom._NET_SYSTEM_TRAY_MESSAGE_DATA)
 410                                 printf("message from dockapp: %s\n", e->data.b);
 411                         else
 412                                 fprintf(stderr, "SYSTEM_TRAY : unknown message type\n");
 413                         break;
 414         }
 415 }
 416
 417
 418 void refresh_systray_icon()
 419 {
 420         TrayWindow *traywin;
 421         GSList *l;
 422         for (l = systray.list_icons; l ; l = l->next) {
 423                 traywin = (TrayWindow*)l->data;
 424                 if (traywin->hide) continue;
 425                 XClearArea(server.dsp, traywin->id, 0, 0, traywin->width, traywin->height, True);
 426         }
 427 }
 428
 429