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 #include <X11/extensions/Xdamage.h>
  29 #include <X11/extensions/Xcomposite.h>
  30
  31 #include "systraybar.h"
  32 #include "server.h"
  33 #include "panel.h"
  34
  35 GSList *icons;
  36
  37 /* defined in the systray spec */
  38 #define SYSTEM_TRAY_REQUEST_DOCK    0
  39 #define SYSTEM_TRAY_BEGIN_MESSAGE   1
  40 #define SYSTEM_TRAY_CANCEL_MESSAGE  2
  41
  42 // selection window
  43 Window net_sel_win = None;
  44
  45 // freedesktop specification doesn't allow multi systray
  46 Systraybar systray;
  47 int refresh_systray;
  48 int systray_enabled;
  49 int systray_max_icon_size = 0;
  50
  51 // background pixmap if we render ourselves the icons
  52 static Pixmap render_background = 0;
  53
  54
  55 void init_systray()
  56 {
  57         start_net();
  58
  59         if (!systray_enabled)
  60                 return;
  61
  62         systray.area._draw_foreground = draw_systray;
  63         systray.area._resize = resize_systray;
  64         systray.area.resize = 1;
  65         systray.area.redraw = 1;
  66         systray.area.on_screen = 1;
  67         refresh_systray = 0;
  68 }
  69
  70
  71 void init_systray_panel(void *p)
  72 {
  73         Panel *panel =(Panel*)p;
  74
  75         if (panel_horizontal) {
  76                 systray.area.posy = panel->area.bg->border.width + panel->area.paddingy;
  77                 systray.area.height = panel->area.height - (2 * systray.area.posy);
  78         }
  79         else {
  80                 systray.area.posx = panel->area.bg->border.width + panel->area.paddingy;
  81                 systray.area.width = panel->area.width - (2 * panel->area.bg->border.width) - (2 * panel->area.paddingy);
  82         }
  83         systray.area.parent = p;
  84         systray.area.panel = p;
  85 }
  86
  87
  88 void cleanup_systray()
  89 {
  90         systray_enabled = 0;
  91         systray.area.on_screen = 0;
  92         free_area(&systray.area);
  93         if (render_background) XFreePixmap(server.dsp, render_background);
  94 }
  95
  96
  97 void draw_systray(void *obj, cairo_t *c)
  98 {
  99         if (real_transparency || systray.alpha != 100 || systray.brightness != 0 || systray.saturation != 0) {
 100                 if (render_background) XFreePixmap(server.dsp, render_background);
 101                 render_background = XCreatePixmap(server.dsp, server.root_win, systray.area.width, systray.area.height, server.depth);
 102                 XCopyArea(server.dsp, systray.area.pix, render_background, server.gc, 0, 0, systray.area.width, systray.area.height, 0, 0);
 103         }
 104
 105         refresh_systray = 1;
 106 }
 107
 108
 109 void resize_systray(void *obj)
 110 {
 111         Systraybar *sysbar = obj;
 112         Panel *panel = sysbar->area.panel;
 113         TrayWindow *traywin;
 114         GSList *l;
 115         int count, icon_size;
 116         int icons_per_column, icons_per_row, marging;
 117
 118         if (panel_horizontal)
 119                 icon_size = sysbar->area.height;
 120         else
 121                 icon_size = sysbar->area.width;
 122         icon_size = icon_size - (2 * sysbar->area.bg->border.width) - (2 * sysbar->area.paddingy);
 123         if (systray_max_icon_size > 0 && icon_size > systray_max_icon_size)
 124                 icon_size = systray_max_icon_size;
 125         count = 0;
 126         for (l = systray.list_icons; l ; l = l->next) {
 127                 if (!((TrayWindow*)l->data)->hide)
 128                         count++;
 129         }
 130         //printf("count %d\n", count);
 131
 132         if (panel_horizontal) {
 133                 if (!count) systray.area.width = 0;
 134                 else {
 135                         int height = sysbar->area.height - 2*sysbar->area.bg->border.width - 2*sysbar->area.paddingy;
 136                         icons_per_column = height / (icon_size+sysbar->area.paddingx);
 137                         if (icons_per_column)
 138                                 marging = height - (icons_per_column-1)*(icon_size+sysbar->area.paddingx) - icon_size;
 139                         else {
 140                                 marging = height - icon_size;
 141                                 icons_per_column = 1;
 142                         }
 143                         icons_per_row = count / icons_per_column + (count%icons_per_column != 0);
 144                         systray.area.width = (2 * systray.area.bg->border.width) + (2 * systray.area.paddingxlr) + (icon_size * icons_per_row) + ((icons_per_row-1) * systray.area.paddingx);
 145                 }
 146
 147                 systray.area.posx = panel->area.width - panel->area.bg->border.width - panel->area.paddingxlr - systray.area.width;
 148                 if (panel->clock.area.on_screen)
 149                         systray.area.posx -= (panel->clock.area.width + panel->area.paddingx);
 150 #ifdef ENABLE_BATTERY
 151                 if (panel->battery.area.on_screen)
 152                         systray.area.posx -= (panel->battery.area.width + panel->area.paddingx);
 153 #endif
 154         }
 155         else {
 156                 if (!count) systray.area.height = 0;
 157                 else {
 158                         int width = sysbar->area.width - 2*sysbar->area.bg->border.width - 2*sysbar->area.paddingy;
 159                         icons_per_row = width / (icon_size+sysbar->area.paddingx);
 160                         if (icons_per_row)
 161                                 marging = width - (icons_per_row-1)*(icon_size+sysbar->area.paddingx) - icon_size;
 162                         else {
 163                                 marging = width - icon_size;
 164                                 icons_per_row = 1;
 165                         }
 166                         icons_per_column = count / icons_per_row+ (count%icons_per_row != 0);
 167                         systray.area.height = (2 * systray.area.bg->border.width) + (2 * systray.area.paddingxlr) + (icon_size * icons_per_column) + ((icons_per_column-1) * systray.area.paddingx);
 168                 }
 169
 170                 systray.area.posy = panel->area.bg->border.width + panel->area.paddingxlr;
 171                 if (panel->clock.area.on_screen)
 172                         systray.area.posy += (panel->clock.area.height + panel->area.paddingx);
 173 #ifdef ENABLE_BATTERY
 174                 if (panel->battery.area.on_screen)
 175                         systray.area.posy += (panel->battery.area.height + panel->area.paddingx);
 176 #endif
 177         }
 178
 179         int i, posx, posy;
 180         if (panel_horizontal) {
 181                 posy = panel->area.bg->border.width + panel->area.paddingy + systray.area.bg->border.width + systray.area.paddingy +marging/2;
 182                 posx = systray.area.posx + systray.area.bg->border.width + systray.area.paddingxlr;
 183         }
 184         else {
 185                 posx = panel->area.bg->border.width + panel->area.paddingy + systray.area.bg->border.width + systray.area.paddingy +marging/2;
 186                 posy = systray.area.posy + systray.area.bg->border.width + systray.area.paddingxlr;
 187         }
 188
 189         for (i=1, l = systray.list_icons; l ; i++, l = l->next) {
 190                 traywin = (TrayWindow*)l->data;
 191                 if (traywin->hide) continue;
 192
 193                 traywin->y = posy;
 194                 traywin->x = posx;
 195                 traywin->width = icon_size;
 196                 traywin->height = icon_size;
 197                 if (panel_horizontal) {
 198                         if (i % icons_per_column)
 199                                 posy += icon_size + sysbar->area.paddingx;
 200                         else {
 201                                 posy = panel->area.bg->border.width + panel->area.paddingy + systray.area.bg->border.width + systray.area.paddingy +marging/2;
 202                                 posx += (icon_size + systray.area.paddingx);
 203                         }
 204                 }
 205                 else {
 206                         if (i % icons_per_row)
 207                                 posx += icon_size + systray.area.paddingx;
 208                         else {
 209                                 posx = panel->area.bg->border.width + panel->area.paddingy + systray.area.bg->border.width + systray.area.paddingy +marging/2;
 210                                 posy += (icon_size + systray.area.paddingx);
 211                         }
 212                 }
 213
 214                 // position and size the icon window
 215                 XMoveResizeWindow(server.dsp, traywin->id, traywin->x, traywin->y, icon_size, icon_size);
 216                 XResizeWindow(server.dsp, traywin->tray_id, icon_size, icon_size);
 217         }
 218 }
 219
 220
 221 // ***********************************************
 222 // systray protocol
 223
 224 void start_net()
 225 {
 226         if (net_sel_win) {
 227                 // protocol already started
 228                 if (!systray_enabled)
 229                         stop_net();
 230                 return;
 231         }
 232         else
 233                 if (!systray_enabled)
 234                         return;
 235
 236         Window win = XGetSelectionOwner(server.dsp, server.atom._NET_SYSTEM_TRAY_SCREEN);
 237
 238         // freedesktop systray specification
 239         if (win != None) {
 240                 // search pid
 241                 Atom _NET_WM_PID, actual_type;
 242                 int actual_format;
 243                 unsigned long nitems;
 244                 unsigned long bytes_after;
 245                 unsigned char *prop = 0;
 246                 int pid;
 247
 248                 _NET_WM_PID = XInternAtom(server.dsp, "_NET_WM_PID", True);
 249                 int ret = XGetWindowProperty(server.dsp, win, _NET_WM_PID, 0, 1024, False, AnyPropertyType, &actual_type, &actual_format, &nitems, &bytes_after, &prop);
 250
 251                 fprintf(stderr, "tint2 : another systray is running");
 252                 if (ret == Success && prop) {
 253                         pid = prop[1] * 256;
 254                         pid += prop[0];
 255                         fprintf(stderr, " pid=%d", pid);
 256                 }
 257                 fprintf(stderr, "\n");
 258                 return;
 259         }
 260
 261         // init systray protocol
 262         net_sel_win = XCreateSimpleWindow(server.dsp, server.root_win, -1, -1, 1, 1, 0, 0, 0);
 263
 264         // v0.3 trayer specification. tint2 always horizontal.
 265         // Vertical panel will draw the systray horizontal.
 266         int orient = 0;
 267         XChangeProperty(server.dsp, net_sel_win, server.atom._NET_SYSTEM_TRAY_ORIENTATION, XA_CARDINAL, 32, PropModeReplace, (unsigned char *) &orient, 1);
 268         VisualID vid = XVisualIDFromVisual(server.visual);
 269         XChangeProperty(server.dsp, net_sel_win, XInternAtom(server.dsp, "_NET_SYSTEM_TRAY_VISUAL", False), XA_VISUALID, 32, PropModeReplace, (unsigned char*)&vid, 1);
 270
 271         XSetSelectionOwner(server.dsp, server.atom._NET_SYSTEM_TRAY_SCREEN, net_sel_win, CurrentTime);
 272         if (XGetSelectionOwner(server.dsp, server.atom._NET_SYSTEM_TRAY_SCREEN) != net_sel_win) {
 273                 stop_net();
 274                 fprintf(stderr, "tint2 : can't get systray manager\n");
 275                 return;
 276         }
 277
 278         //fprintf(stderr, "tint2 : systray started\n");
 279         XClientMessageEvent ev;
 280         ev.type = ClientMessage;
 281         ev.window = server.root_win;
 282         ev.message_type = server.atom.MANAGER;
 283         ev.format = 32;
 284         ev.data.l[0] = CurrentTime;
 285         ev.data.l[1] = server.atom._NET_SYSTEM_TRAY_SCREEN;
 286         ev.data.l[2] = net_sel_win;
 287         ev.data.l[3] = 0;
 288         ev.data.l[4] = 0;
 289         XSendEvent(server.dsp, server.root_win, False, StructureNotifyMask, (XEvent*)&ev);
 290 }
 291
 292
 293 void stop_net()
 294 {
 295         //fprintf(stderr, "tint2 : systray stopped\n");
 296         if (systray.list_icons) {
 297                 // remove_icon change systray.list_icons
 298                 while(systray.list_icons)
 299                         remove_icon((TrayWindow*)systray.list_icons->data);
 300
 301                 g_slist_free(systray.list_icons);
 302                 systray.list_icons = 0;
 303         }
 304
 305         if (net_sel_win != None) {
 306                 XDestroyWindow(server.dsp, net_sel_win);
 307                 net_sel_win = None;
 308         }
 309 }
 310
 311
 312 gboolean error;
 313 int window_error_handler(Display *d, XErrorEvent *e)
 314 {
 315         d=d;e=e;
 316         error = TRUE;
 317         if (e->error_code != BadWindow) {
 318                 printf("error_handler %d\n", e->error_code);
 319         }
 320         return 0;
 321 }
 322
 323
 324 static gint compare_traywindows(gconstpointer a, gconstpointer b)
 325 {
 326         const TrayWindow * traywin_a = (TrayWindow*)a;
 327         const TrayWindow * traywin_b = (TrayWindow*)b;
 328         XTextProperty name_a, name_b;
 329
 330         if(XGetWMName(server.dsp, traywin_a->tray_id, &name_a) == 0) {
 331                 return -1;
 332         }
 333         else if(XGetWMName(server.dsp, traywin_b->tray_id, &name_b) == 0) {
 334                 XFree(name_a.value);
 335                 return 1;
 336         }
 337         else {
 338                 gint retval = g_ascii_strncasecmp((char*)name_a.value, (char*)name_b.value, -1) * systray.sort;
 339                 XFree(name_a.value);
 340                 XFree(name_b.value);
 341                 return retval;
 342         }
 343 }
 344
 345
 346 gboolean add_icon(Window id)
 347 {
 348         TrayWindow *traywin;
 349         XErrorHandler old;
 350         Panel *panel = systray.area.panel;
 351         int hide = 0;
 352
 353         error = FALSE;
 354         XWindowAttributes attr;
 355         XGetWindowAttributes(server.dsp, id, &attr);
 356         unsigned long mask = 0;
 357         XSetWindowAttributes set_attr;
 358         if (attr.depth != server.depth || systray.alpha != 100 || systray.brightness != 0 || systray.saturation != 0 ) {
 359                 set_attr.colormap = attr.colormap;
 360                 set_attr.background_pixel = 0;
 361                 set_attr.border_pixel = 0;
 362                 mask = CWColormap|CWBackPixel|CWBorderPixel;
 363         }
 364         else {
 365                 set_attr.background_pixmap = ParentRelative;
 366                 mask = CWBackPixmap;
 367         }
 368         Window parent_window;
 369         parent_window = XCreateWindow(server.dsp, panel->main_win, 0, 0, 30, 30, 0, attr.depth, InputOutput, attr.visual, mask, &set_attr);
 370         old = XSetErrorHandler(window_error_handler);
 371         XReparentWindow(server.dsp, id, parent_window, 0, 0);
 372         XSync(server.dsp, False);
 373         XSetErrorHandler(old);
 374         if (error != FALSE) {
 375                 fprintf(stderr, "tint2 : not icon_swallow\n");
 376                 XDestroyWindow(server.dsp, parent_window);
 377                 return FALSE;
 378         }
 379
 380         {
 381                 Atom acttype;
 382                 int actfmt;
 383                 unsigned long nbitem, bytes;
 384                 unsigned char *data = 0;
 385                 int ret;
 386
 387                 ret = XGetWindowProperty(server.dsp, id, server.atom._XEMBED_INFO, 0, 2, False, server.atom._XEMBED_INFO, &acttype, &actfmt, &nbitem, &bytes, &data);
 388                 if (ret == Success) {
 389                         if (data) {
 390                                 if (nbitem == 2) {
 391                                         //hide = ((data[1] & XEMBED_MAPPED) == 0);
 392                                         //printf("hide %d\n", hide);
 393                                 }
 394                                 XFree(data);
 395                         }
 396                 }
 397                 else {
 398                         fprintf(stderr, "tint2 : xembed error\n");
 399                         XDestroyWindow(server.dsp, parent_window);
 400                         return FALSE;
 401                 }
 402         }
 403         {
 404                 XEvent e;
 405                 e.xclient.type = ClientMessage;
 406                 e.xclient.serial = 0;
 407                 e.xclient.send_event = True;
 408                 e.xclient.message_type = server.atom._XEMBED;
 409                 e.xclient.window = id;
 410                 e.xclient.format = 32;
 411                 e.xclient.data.l[0] = CurrentTime;
 412                 e.xclient.data.l[1] = XEMBED_EMBEDDED_NOTIFY;
 413                 e.xclient.data.l[2] = 0;
 414                 e.xclient.data.l[3] = parent_window;
 415                 e.xclient.data.l[4] = 0;
 416                 XSendEvent(server.dsp, id, False, 0xFFFFFF, &e);
 417         }
 418
 419         traywin = g_new0(TrayWindow, 1);
 420         traywin->id = parent_window;
 421         traywin->tray_id = id;
 422         traywin->hide = hide;
 423         traywin->depth = attr.depth;
 424         traywin->damage = 0;
 425
 426         if (systray.sort == 3)
 427                 systray.list_icons = g_slist_prepend(systray.list_icons, traywin);
 428         else if (systray.sort == 2)
 429                 systray.list_icons = g_slist_append(systray.list_icons, traywin);
 430         else
 431                 systray.list_icons = g_slist_insert_sorted(systray.list_icons, traywin, compare_traywindows);
 432         systray.area.resize = 1;
 433         systray.area.redraw = 1;
 434         //printf("add_icon id %lx, %d\n", id, g_slist_length(systray.list_icons));
 435
 436         // watch for the icon trying to resize itself!
 437         XSelectInput(server.dsp, traywin->tray_id, StructureNotifyMask);
 438         if (real_transparency || systray.alpha != 100 || systray.brightness != 0 || systray.saturation != 0) {
 439                 traywin->damage = XDamageCreate(server.dsp, traywin->id, XDamageReportNonEmpty);
 440                 XCompositeRedirectWindow(server.dsp, traywin->id, CompositeRedirectManual);
 441         }
 442
 443         // show the window
 444         if (!traywin->hide) {
 445                 XMapRaised(server.dsp, traywin->tray_id);
 446                 XMapRaised(server.dsp, traywin->id);
 447         }
 448
 449         // changed in systray force resize on panel
 450         panel->area.resize = 1;
 451         panel_refresh = 1;
 452         return TRUE;
 453 }
 454
 455
 456 void remove_icon(TrayWindow *traywin)
 457 {
 458         XErrorHandler old;
 459
 460         // remove from our list
 461         systray.list_icons = g_slist_remove(systray.list_icons, traywin);
 462         systray.area.resize = 1;
 463         systray.area.redraw = 1;
 464         //printf("remove_icon id %lx, %d\n", traywin->id);
 465
 466         XSelectInput(server.dsp, traywin->tray_id, NoEventMask);
 467         if (traywin->damage)
 468                 XDamageDestroy(server.dsp, traywin->damage);
 469
 470         // reparent to root
 471         error = FALSE;
 472         old = XSetErrorHandler(window_error_handler);
 473         if (!traywin->hide)
 474                 XUnmapWindow(server.dsp, traywin->id);
 475         XReparentWindow(server.dsp, traywin->tray_id, server.root_win, 0, 0);
 476         XDestroyWindow(server.dsp, traywin->id);
 477         XSync(server.dsp, False);
 478         XSetErrorHandler(old);
 479         g_free(traywin);
 480
 481         // changed in systray force resize on panel
 482         Panel *panel = systray.area.panel;
 483         panel->area.resize = 1;
 484         panel_refresh = 1;
 485 }
 486
 487
 488 void net_message(XClientMessageEvent *e)
 489 {
 490         unsigned long opcode;
 491         Window id;
 492
 493         opcode = e->data.l[1];
 494         switch (opcode) {
 495                 case SYSTEM_TRAY_REQUEST_DOCK:
 496                         id = e->data.l[2];
 497                         if (id) add_icon(id);
 498                         break;
 499
 500                 case SYSTEM_TRAY_BEGIN_MESSAGE:
 501                 case SYSTEM_TRAY_CANCEL_MESSAGE:
 502                         // we don't show baloons messages.
 503                         break;
 504
 505                 default:
 506                         if (opcode == server.atom._NET_SYSTEM_TRAY_MESSAGE_DATA)
 507                                 printf("message from dockapp: %s\n", e->data.b);
 508                         else
 509                                 fprintf(stderr, "SYSTEM_TRAY : unknown message type\n");
 510                         break;
 511         }
 512 }
 513
 514 void systray_render_icon_now(void* t)
 515 {
 516         TrayWindow* traywin = t;
 517         traywin->render_timeout = 0;
 518
 519         // good systray icons support 32 bit depth, but some icons are still 24 bit.
 520         // We create a heuristic mask for these icons, i.e. we get the rgb value in the top left corner, and
 521         // mask out all pixel with the same rgb value
 522         Panel* panel = systray.area.panel;
 523         imlib_context_set_drawable(traywin->id);
 524         Imlib_Image image = imlib_create_image_from_drawable(0, 0, 0, traywin->width, traywin->height, 0);
 525         if (image == 0)
 526                 return;
 527
 528         imlib_context_set_image(image);
 529         imlib_image_set_has_alpha(1);
 530         DATA32* data = imlib_image_get_data();
 531         if (traywin->depth == 24) {
 532                 createHeuristicMask(data, traywin->width, traywin->height);
 533         }
 534         if (systray.alpha != 100 || systray.brightness != 0 || systray.saturation != 0)
 535                 adjust_asb(data, traywin->width, traywin->height, systray.alpha, (float)systray.saturation/100, (float)systray.brightness/100);
 536         imlib_image_put_back_data(data);
 537         XCopyArea(server.dsp, render_background, systray.area.pix, server.gc, traywin->x-systray.area.posx, traywin->y-systray.area.posy, traywin->width, traywin->height, traywin->x-systray.area.posx, traywin->y-systray.area.posy);
 538         if ( !real_transparency ) {
 539                 imlib_context_set_drawable(systray.area.pix);
 540                 imlib_render_image_on_drawable(traywin->x-systray.area.posx, traywin->y-systray.area.posy);
 541         }
 542         else {
 543                 render_image(systray.area.pix, traywin->x-systray.area.posx, traywin->y-systray.area.posy, traywin->width, traywin->height);
 544         }
 545         XCopyArea(server.dsp, systray.area.pix, panel->main_win, server.gc, traywin->x-systray.area.posx, traywin->y-systray.area.posy, traywin->width, traywin->height, traywin->x, traywin->y);
 546         imlib_free_image_and_decache();
 547
 548         XDamageSubtract(server.dsp, traywin->damage, None, None);
 549         XFlush(server.dsp);
 550 }
 551
 552
 553 void systray_render_icon(TrayWindow* traywin)
 554 {
 555         // wine tray icons update whenever mouse is over them, so we limit the updates to 50 ms
 556         if (traywin->render_timeout == 0)
 557                 traywin->render_timeout = add_timeout(50, 0, systray_render_icon_now, traywin);
 558 }
 559
 560
 561 void refresh_systray_icon()
 562 {
 563         TrayWindow *traywin;
 564         GSList *l;
 565         for (l = systray.list_icons; l ; l = l->next) {
 566                 traywin = (TrayWindow*)l->data;
 567                 if (traywin->hide) continue;
 568                 if (real_transparency || systray.alpha != 100 || systray.brightness != 0 || systray.saturation != 0)
 569                         systray_render_icon(traywin);
 570                 else
 571                         XClearArea(server.dsp, traywin->tray_id, 0, 0, traywin->width, traywin->height, True);
 572         }
 573 }