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                 // remove_icon change systray.list_icons
  83                 while(systray.list_icons)
  84                         remove_icon((TrayWindow*)systray.list_icons->data);
  85
  86       g_slist_free(systray.list_icons);
  87       systray.list_icons = 0;
  88    }
  89
  90         free_area(&systray.area);
  91         cleanup_net();
  92 }
  93
  94
  95 void draw_systray(void *obj, cairo_t *c, int active)
  96 {
  97         // tint2 don't draw systray icons. just the background.
  98         refresh_systray = 1;
  99 }
 100
 101
 102 void resize_systray(void *obj)
 103 {
 104         Systraybar *sysbar = obj;
 105         Panel *panel = sysbar->area.panel;
 106         TrayWindow *traywin;
 107         GSList *l;
 108         int count, posx, posy;
 109         int icon_size;
 110
 111         if (panel_horizontal)
 112                 icon_size = sysbar->area.height;
 113         else
 114                 icon_size = sysbar->area.width;
 115         icon_size = icon_size - (2 * sysbar->area.pix.border.width) - (2 * sysbar->area.paddingy);
 116         count = g_slist_length(systray.list_icons);
 117
 118         if (panel_horizontal) {
 119                 if (!count) systray.area.width = 0;
 120                 else systray.area.width = (2 * systray.area.pix.border.width) + (2 * systray.area.paddingxlr) + (icon_size * count) + ((count-1) * systray.area.paddingx);
 121
 122                 systray.area.posx = panel->area.width - panel->area.pix.border.width - panel->area.paddingxlr - systray.area.width;
 123                 if (panel->clock.area.on_screen)
 124                         systray.area.posx -= (panel->clock.area.width + panel->area.paddingx);
 125 #ifdef ENABLE_BATTERY
 126                 if (panel->battery.area.on_screen)
 127                         systray.area.posx -= (panel->battery.area.width + panel->area.paddingx);
 128 #endif
 129         }
 130         else {
 131                 if (!count) systray.area.height = 0;
 132                 else systray.area.height = (2 * systray.area.pix.border.width) + (2 * systray.area.paddingxlr) + (icon_size * count) + ((count-1) * systray.area.paddingx);
 133
 134                 systray.area.posy = panel->area.pix.border.width + panel->area.paddingxlr;
 135                 if (panel->clock.area.on_screen)
 136                         systray.area.posy += (panel->clock.area.height + panel->area.paddingx);
 137 #ifdef ENABLE_BATTERY
 138                 if (panel->battery.area.on_screen)
 139                         systray.area.posy += (panel->battery.area.height + panel->area.paddingx);
 140 #endif
 141         }
 142
 143         if (panel_horizontal) {
 144                 posy = panel->area.pix.border.width + panel->area.paddingy + systray.area.pix.border.width + systray.area.paddingy;
 145                 posx = systray.area.posx + systray.area.pix.border.width + systray.area.paddingxlr;
 146         }
 147         else {
 148                 posx = panel->area.pix.border.width + panel->area.paddingy + systray.area.pix.border.width + systray.area.paddingy;
 149                 posy = systray.area.posy + systray.area.pix.border.width + systray.area.paddingxlr;
 150         }
 151         for (l = systray.list_icons; l ; l = l->next) {
 152                 traywin = (TrayWindow*)l->data;
 153
 154                 traywin->y = posy;
 155                 traywin->x = posx;
 156                 traywin->width = icon_size;
 157                 traywin->height = icon_size;
 158                 if (panel_horizontal)
 159                         posx += (icon_size + systray.area.paddingx);
 160                 else
 161                         posy += (icon_size + systray.area.paddingx);
 162
 163                 // position and size the icon window
 164                 XMoveResizeWindow(server.dsp, traywin->id, traywin->x, traywin->y, icon_size, icon_size);
 165         }
 166 }
 167
 168
 169 // ***********************************************
 170 // systray protocol
 171
 172 int init_net()
 173 {
 174         // freedesktop systray specification
 175         if (XGetSelectionOwner(server.dsp, server.atom._NET_SYSTEM_TRAY_SCREEN) != None) {
 176                 fprintf(stderr, "tint2 : another systray is running\n");
 177                 return 0;
 178         }
 179
 180         // init systray protocol
 181    net_sel_win = XCreateSimpleWindow(server.dsp, server.root_win, -1, -1, 1, 1, 0, 0, 0);
 182
 183         // v0.2 trayer specification. tint2 always orizontal.
 184         // TODO : vertical panel ??
 185         int orient = 0;
 186         XChangeProperty(server.dsp, net_sel_win, server.atom._NET_SYSTEM_TRAY_ORIENTATION, XA_CARDINAL, 32, PropModeReplace, (unsigned char *) &orient, 1);
 187
 188         XSetSelectionOwner(server.dsp, server.atom._NET_SYSTEM_TRAY_SCREEN, net_sel_win, CurrentTime);
 189         if (XGetSelectionOwner(server.dsp, server.atom._NET_SYSTEM_TRAY_SCREEN) != net_sel_win) {
 190                 fprintf(stderr, "tint2 : can't get systray manager\n");
 191                 return 0;
 192         }
 193
 194    XClientMessageEvent ev;
 195         ev.type = ClientMessage;
 196    ev.window = server.root_win;
 197         ev.message_type = server.atom.MANAGER;
 198         ev.format = 32;
 199         ev.data.l[0] = CurrentTime;
 200         ev.data.l[1] = server.atom._NET_SYSTEM_TRAY_SCREEN;
 201         ev.data.l[2] = net_sel_win;
 202         ev.data.l[3] = 0;
 203         ev.data.l[4] = 0;
 204         XSendEvent(server.dsp, server.root_win, False, StructureNotifyMask, (XEvent*)&ev);
 205         return 1;
 206 }
 207
 208
 209 void cleanup_net()
 210 {
 211         if (net_sel_win != None) {
 212                 XDestroyWindow(server.dsp, net_sel_win);
 213                 net_sel_win = None;
 214         }
 215 }
 216
 217
 218 gboolean error;
 219 int window_error_handler(Display *d, XErrorEvent *e)
 220 {
 221         d=d;e=e;
 222         error = TRUE;
 223         if (e->error_code != BadWindow) {
 224                 printf("error_handler %d\n", e->error_code);
 225         }
 226         return 0;
 227 }
 228
 229
 230 gboolean add_icon(Window id)
 231 {
 232         TrayWindow *traywin;
 233         XErrorHandler old;
 234         Panel *panel = systray.area.panel;
 235
 236         error = FALSE;
 237         old = XSetErrorHandler(window_error_handler);
 238         XReparentWindow(server.dsp, id, panel->main_win, 0, 0);
 239         XSync(server.dsp, False);
 240         XSetErrorHandler(old);
 241         if (error != FALSE) {
 242                 fprintf(stderr, "tint2 : not icon_swallow\n");
 243                 return FALSE;
 244         }
 245
 246         {
 247                 Atom acttype;
 248                 int actfmt;
 249                 unsigned long nbitem, bytes;
 250                 unsigned char *data = 0;
 251                 int ret;
 252
 253                 ret = XGetWindowProperty(server.dsp, id, server.atom._XEMBED_INFO, 0, 2, False, server.atom._XEMBED_INFO, &acttype, &actfmt, &nbitem, &bytes, &data);
 254                 if (data) XFree(data);
 255                 if (ret != Success) {
 256                         fprintf(stderr, "tint2 : xembed error\n");
 257                         return FALSE;
 258                 }
 259         }
 260         {
 261                 XEvent e;
 262                 e.xclient.type = ClientMessage;
 263                 e.xclient.serial = 0;
 264                 e.xclient.send_event = True;
 265                 e.xclient.message_type = server.atom._XEMBED;
 266                 e.xclient.window = id;
 267                 e.xclient.format = 32;
 268                 e.xclient.data.l[0] = CurrentTime;
 269                 e.xclient.data.l[1] = XEMBED_EMBEDDED_NOTIFY;
 270                 e.xclient.data.l[2] = 0;
 271                 e.xclient.data.l[3] = panel->main_win;
 272                 e.xclient.data.l[4] = 0;
 273                 XSendEvent(server.dsp, id, False, 0xFFFFFF, &e);
 274         }
 275
 276         traywin = g_new0(TrayWindow, 1);
 277         traywin->id = id;
 278
 279         systray.list_icons = g_slist_prepend(systray.list_icons, traywin);
 280         systray.area.resize = 1;
 281         systray.area.redraw = 1;
 282         //printf("add_icon id %lx, %d\n", id, g_slist_length(systray.list_icons));
 283
 284         // watch for the icon trying to resize itself!
 285         XSelectInput(server.dsp, traywin->id, StructureNotifyMask);
 286
 287         // show the window
 288         XMapRaised(server.dsp, traywin->id);
 289
 290         // changed in systray force resize on panel
 291         panel->area.resize = 1;
 292         panel_refresh = 1;
 293         return TRUE;
 294 }
 295
 296
 297 void remove_icon(TrayWindow *traywin)
 298 {
 299         XErrorHandler old;
 300         Window id = traywin->id;
 301
 302         // remove from our list
 303         systray.list_icons = g_slist_remove(systray.list_icons, traywin);
 304         g_free(traywin);
 305         systray.area.resize = 1;
 306         systray.area.redraw = 1;
 307         //printf("remove_icon id %lx, %d\n", traywin->id);
 308
 309         XSelectInput(server.dsp, id, NoEventMask);
 310
 311         // reparent to root
 312         error = FALSE;
 313         old = XSetErrorHandler(window_error_handler);
 314         XUnmapWindow(server.dsp, id);
 315         XReparentWindow(server.dsp, id, server.root_win, 0, 0);
 316         XSync(server.dsp, False);
 317         XSetErrorHandler(old);
 318
 319         // changed in systray force resize on panel
 320         Panel *panel = systray.area.panel;
 321         panel->area.resize = 1;
 322         panel_refresh = 1;
 323 }
 324
 325
 326 void net_message(XClientMessageEvent *e)
 327 {
 328         unsigned long opcode;
 329         Window id;
 330
 331         opcode = e->data.l[1];
 332         switch (opcode) {
 333                 case SYSTEM_TRAY_REQUEST_DOCK:
 334                         id = e->data.l[2];
 335                         if (id) add_icon(id);
 336                         break;
 337
 338                 case SYSTEM_TRAY_BEGIN_MESSAGE:
 339                 case SYSTEM_TRAY_CANCEL_MESSAGE:
 340                         // we don't show baloons messages.
 341                         break;
 342
 343                 default:
 344                         if (opcode == server.atom._NET_SYSTEM_TRAY_MESSAGE_DATA)
 345                                 printf("message from dockapp: %s\n", e->data.b);
 346                         else
 347                                 fprintf(stderr, "SYSTEM_TRAY : unknown message type\n");
 348                         break;
 349         }
 350 }
 351
 352
 353 void refresh_systray_icon()
 354 {
 355         TrayWindow *traywin;
 356         GSList *l;
 357         for (l = systray.list_icons; l ; l = l->next) {
 358                 traywin = (TrayWindow*)l->data;
 359                 XClearArea(server.dsp, traywin->id, 0, 0, traywin->width, traywin->height, True);
 360         }
 361 }
 362
 363