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