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