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/Xrender.h>
  30 #include <X11/extensions/Xcomposite.h>
  31
  32 #include "systraybar.h"
  33 #include "server.h"
  34 #include "panel.h"
  35
  36 GSList *icons;
  37
  38 /* defined in the systray spec */
  39 #define SYSTEM_TRAY_REQUEST_DOCK    0
  40 #define SYSTEM_TRAY_BEGIN_MESSAGE   1
  41 #define SYSTEM_TRAY_CANCEL_MESSAGE  2
  42
  43 // selection window
  44 Window net_sel_win = None, hint_win = None;
  45
  46 // freedesktop specification doesn't allow multi systray
  47 Systraybar systray;
  48 int refresh_systray;
  49 int systray_enabled;
  50 int systray_max_icon_size = 0;
  51
  52
  53 void init_systray()
  54 {
  55         start_net();
  56
  57         if (!systray_enabled)
  58                 return;
  59
  60         systray.area._draw_foreground = draw_systray;
  61         systray.area._resize = resize_systray;
  62         systray.area.resize = 1;
  63         systray.area.redraw = 1;
  64         systray.area.on_screen = 1;
  65         refresh_systray = 0;
  66 }
  67
  68
  69 void init_systray_panel(void *p)
  70 {
  71         Panel *panel =(Panel*)p;
  72
  73         if (panel_horizontal) {
  74                 systray.area.posy = panel->area.pix.border.width + panel->area.paddingy;
  75                 systray.area.height = panel->area.height - (2 * systray.area.posy);
  76         }
  77         else {
  78                 systray.area.posx = panel->area.pix.border.width + panel->area.paddingy;
  79                 systray.area.width = panel->area.width - (2 * panel->area.pix.border.width) - (2 * panel->area.paddingy);
  80         }
  81         systray.area.parent = p;
  82         systray.area.panel = p;
  83 }
  84
  85
  86 void cleanup_systray()
  87 {
  88         systray_enabled = 0;
  89         systray.area.on_screen = 0;
  90         free_area(&systray.area);
  91 }
  92
  93
  94 void draw_systray(void *obj, cairo_t *c, int active)
  95 {
  96         // tint2 don't draw systray icons. just the background.
  97         refresh_systray = 1;
  98 }
  99
 100
 101 void resize_systray(void *obj)
 102 {
 103         Systraybar *sysbar = obj;
 104         Panel *panel = sysbar->area.panel;
 105         TrayWindow *traywin;
 106         GSList *l;
 107         int count, posx, posy;
 108         int icon_size;
 109
 110         if (panel_horizontal)
 111                 icon_size = sysbar->area.height;
 112         else
 113                 icon_size = sysbar->area.width;
 114         icon_size = icon_size - (2 * sysbar->area.pix.border.width) - (2 * sysbar->area.paddingy);
 115         if (systray_max_icon_size > 0 && icon_size > systray_max_icon_size)
 116                 icon_size = systray_max_icon_size;
 117         count = 0;
 118         for (l = systray.list_icons; l ; l = l->next) {
 119                 if (!((TrayWindow*)l->data)->hide)
 120                         count++;
 121         }
 122         //printf("count %d\n", count);
 123
 124         if (panel_horizontal) {
 125                 if (!count) systray.area.width = 0;
 126                 else {
 127                         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);
 128                         int row_count = count / icons_per_column + (count%icons_per_column != 0);
 129                         systray.area.width = (2 * systray.area.pix.border.width) + (2 * systray.area.paddingxlr) + (icon_size * row_count) + ((row_count-1) * systray.area.paddingx);
 130                 }
 131
 132                 systray.area.posx = panel->area.width - panel->area.pix.border.width - panel->area.paddingxlr - systray.area.width;
 133                 if (panel->clock.area.on_screen)
 134                         systray.area.posx -= (panel->clock.area.width + panel->area.paddingx);
 135 #ifdef ENABLE_BATTERY
 136                 if (panel->battery.area.on_screen)
 137                         systray.area.posx -= (panel->battery.area.width + panel->area.paddingx);
 138 #endif
 139         }
 140         else {
 141                 if (!count) systray.area.height = 0;
 142                 else {
 143                         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);
 144                         int column_count = count / icons_per_row+ (count%icons_per_row != 0);
 145                         systray.area.height = (2 * systray.area.pix.border.width) + (2 * systray.area.paddingxlr) + (icon_size * column_count) + ((column_count-1) * systray.area.paddingx);
 146                 }
 147
 148                 systray.area.posy = panel->area.pix.border.width + panel->area.paddingxlr;
 149                 if (panel->clock.area.on_screen)
 150                         systray.area.posy += (panel->clock.area.height + panel->area.paddingx);
 151 #ifdef ENABLE_BATTERY
 152                 if (panel->battery.area.on_screen)
 153                         systray.area.posy += (panel->battery.area.height + panel->area.paddingx);
 154 #endif
 155         }
 156
 157         int max_line_pos;
 158         if (panel_horizontal) {
 159                 max_line_pos = sysbar->area.posy+sysbar->area.height - sysbar->area.pix.border.width - sysbar->area.paddingy - icon_size;
 160                 posy = panel->area.pix.border.width + panel->area.paddingy + systray.area.pix.border.width + systray.area.paddingy;
 161                 posx = systray.area.posx + systray.area.pix.border.width + systray.area.paddingxlr;
 162         }
 163         else {
 164                 max_line_pos = sysbar->area.posx+sysbar->area.width - sysbar->area.pix.border.width - sysbar->area.paddingy - icon_size;
 165                 posx = panel->area.pix.border.width + panel->area.paddingy + systray.area.pix.border.width + systray.area.paddingy;
 166                 posy = systray.area.posy + systray.area.pix.border.width + systray.area.paddingxlr;
 167         }
 168
 169         for (l = systray.list_icons; l ; l = l->next) {
 170                 traywin = (TrayWindow*)l->data;
 171                 if (traywin->hide) continue;
 172
 173                 traywin->y = posy;
 174                 traywin->x = posx;
 175                 traywin->width = icon_size;
 176                 traywin->height = icon_size;
 177                 if (panel_horizontal) {
 178                         if (posy + icon_size + sysbar->area.paddingxlr < max_line_pos)
 179                                 posy += icon_size + sysbar->area.paddingx;
 180                         else {
 181                                 posx += (icon_size + systray.area.paddingx);
 182                                 posy = panel->area.pix.border.width + panel->area.paddingy + systray.area.pix.border.width + systray.area.paddingy;
 183                         }
 184                 }
 185                 else {
 186                         if (posx + icon_size + sysbar->area.paddingxlr < max_line_pos)
 187                                 posx += icon_size + systray.area.paddingx;
 188                         else {
 189                                 posy += (icon_size + systray.area.paddingx);
 190                                 posx = panel->area.pix.border.width + panel->area.paddingy + systray.area.pix.border.width + systray.area.paddingy;
 191                         }
 192                 }
 193
 194                 // position and size the icon window
 195                 XMoveResizeWindow(server.dsp, traywin->id, traywin->x, traywin->y, icon_size, icon_size);
 196                 XResizeWindow(server.dsp, traywin->tray_id, icon_size, icon_size);
 197         }
 198 }
 199
 200
 201 // ***********************************************
 202 // systray protocol
 203
 204 void start_net()
 205 {
 206         if (net_sel_win) {
 207                 // protocol already started
 208                 if (!systray_enabled)
 209                         stop_net();
 210                 return;
 211         }
 212         else
 213                 if (!systray_enabled)
 214                         return;
 215
 216         Window win = XGetSelectionOwner(server.dsp, server.atom._NET_SYSTEM_TRAY_SCREEN);
 217
 218         // freedesktop systray specification
 219         if (win != None) {
 220                 // search pid
 221                 Atom _NET_WM_PID, actual_type;
 222                 int actual_format;
 223                 unsigned long nitems;
 224                 unsigned long bytes_after;
 225                 unsigned char *prop = 0;
 226                 int pid;
 227
 228                 _NET_WM_PID = XInternAtom(server.dsp, "_NET_WM_PID", True);
 229                 int ret = XGetWindowProperty(server.dsp, win, _NET_WM_PID, 0, 1024, False, AnyPropertyType, &actual_type, &actual_format, &nitems, &bytes_after, &prop);
 230
 231                 fprintf(stderr, "tint2 : another systray is running");
 232                 if (ret == Success && prop) {
 233                         pid = prop[1] * 256;
 234                         pid += prop[0];
 235                         fprintf(stderr, " pid=%d", pid);
 236                 }
 237                 fprintf(stderr, "\n");
 238                 return;
 239         }
 240
 241         // init systray protocol
 242         net_sel_win = XCreateSimpleWindow(server.dsp, server.root_win, -1, -1, 1, 1, 0, 0, 0);
 243
 244         // v0.2 trayer specification. tint2 always horizontal.
 245         // Vertical panel will draw the systray horizontal.
 246         int orient = 0;
 247         XChangeProperty(server.dsp, net_sel_win, server.atom._NET_SYSTEM_TRAY_ORIENTATION, XA_CARDINAL, 32, PropModeReplace, (unsigned char *) &orient, 1);
 248         VisualID vid = XVisualIDFromVisual(server.visual);
 249         XChangeProperty(server.dsp, net_sel_win, XInternAtom(server.dsp, "_NET_SYSTEM_TRAY_VISUAL", False), XA_VISUALID, 32, PropModeReplace, (unsigned char*)&vid, 1);
 250
 251         XSetSelectionOwner(server.dsp, server.atom._NET_SYSTEM_TRAY_SCREEN, net_sel_win, CurrentTime);
 252         if (XGetSelectionOwner(server.dsp, server.atom._NET_SYSTEM_TRAY_SCREEN) != net_sel_win) {
 253                 stop_net();
 254                 fprintf(stderr, "tint2 : can't get systray manager\n");
 255                 return;
 256         }
 257
 258         //fprintf(stderr, "tint2 : systray started\n");
 259         XClientMessageEvent ev;
 260         ev.type = ClientMessage;
 261         ev.window = server.root_win;
 262         ev.message_type = server.atom.MANAGER;
 263         ev.format = 32;
 264         ev.data.l[0] = CurrentTime;
 265         ev.data.l[1] = server.atom._NET_SYSTEM_TRAY_SCREEN;
 266         ev.data.l[2] = net_sel_win;
 267         ev.data.l[3] = 0;
 268         ev.data.l[4] = 0;
 269         XSendEvent(server.dsp, server.root_win, False, StructureNotifyMask, (XEvent*)&ev);
 270 }
 271
 272
 273 void stop_net()
 274 {
 275         //fprintf(stderr, "tint2 : systray stopped\n");
 276         if (systray.list_icons) {
 277                 // remove_icon change systray.list_icons
 278                 while(systray.list_icons)
 279                         remove_icon((TrayWindow*)systray.list_icons->data);
 280
 281                 g_slist_free(systray.list_icons);
 282                 systray.list_icons = 0;
 283         }
 284
 285         if (net_sel_win != None) {
 286                 XDestroyWindow(server.dsp, net_sel_win);
 287                 net_sel_win = None;
 288         }
 289 }
 290
 291
 292 gboolean error;
 293 int window_error_handler(Display *d, XErrorEvent *e)
 294 {
 295         d=d;e=e;
 296         error = TRUE;
 297         if (e->error_code != BadWindow) {
 298                 printf("error_handler %d\n", e->error_code);
 299         }
 300         return 0;
 301 }
 302
 303
 304 static gint compare_traywindows(gconstpointer a, gconstpointer b)
 305 {
 306         const TrayWindow * traywin_a = (TrayWindow*)a;
 307         const TrayWindow * traywin_b = (TrayWindow*)b;
 308         XTextProperty name_a, name_b;
 309
 310         if(XGetWMName(server.dsp, traywin_a->tray_id, &name_a) == 0) {
 311                 return -1;
 312         }
 313         else if(XGetWMName(server.dsp, traywin_b->tray_id, &name_b) == 0) {
 314                 XFree(name_a.value);
 315                 return 1;
 316         }
 317         else {
 318                 gint retval = g_ascii_strncasecmp((char*)name_a.value, (char*)name_b.value, -1) * systray.sort;
 319                 XFree(name_a.value);
 320                 XFree(name_b.value);
 321                 return retval;
 322         }
 323 }
 324
 325
 326 gboolean add_icon(Window id)
 327 {
 328         TrayWindow *traywin;
 329         XErrorHandler old;
 330         Panel *panel = systray.area.panel;
 331         int hide = 0;
 332
 333         error = FALSE;
 334         int wrong_format = 0;
 335         XWindowAttributes attr;
 336         XGetWindowAttributes(server.dsp, id, &attr);
 337         XSetWindowAttributes set_attr;
 338         wrong_format = (attr.depth != server.depth);
 339         set_attr.colormap = attr.colormap;
 340         set_attr.background_pixel = 0;
 341         set_attr.border_pixel = 0;
 342         unsigned long mask = CWColormap|CWBackPixel|CWBorderPixel;
 343         Window parent_window;
 344         if (real_transparency)
 345                 parent_window = XCreateWindow(server.dsp, panel->main_win, 0, 0, 30, 30, 0, attr.depth, InputOutput, attr.visual, mask, &set_attr);
 346         else
 347                 parent_window = panel->main_win;
 348         old = XSetErrorHandler(window_error_handler);
 349         XReparentWindow(server.dsp, id, parent_window, 0, 0);
 350         XSync(server.dsp, False);
 351         XSetErrorHandler(old);
 352         if (error != FALSE) {
 353                 fprintf(stderr, "tint2 : not icon_swallow\n");
 354                 return FALSE;
 355         }
 356
 357         {
 358                 Atom acttype;
 359                 int actfmt;
 360                 unsigned long nbitem, bytes;
 361                 unsigned char *data = 0;
 362                 int ret;
 363
 364                 ret = XGetWindowProperty(server.dsp, id, server.atom._XEMBED_INFO, 0, 2, False, server.atom._XEMBED_INFO, &acttype, &actfmt, &nbitem, &bytes, &data);
 365                 if (ret == Success) {
 366                         if (data) {
 367                                 if (nbitem == 2) {
 368                                         //hide = ((data[1] & XEMBED_MAPPED) == 0);
 369                                         //printf("hide %d\n", hide);
 370                                 }
 371                                 XFree(data);
 372                         }
 373                 }
 374                 else {
 375                         fprintf(stderr, "tint2 : xembed error\n");
 376                         return FALSE;
 377                 }
 378         }
 379         {
 380                 XEvent e;
 381                 e.xclient.type = ClientMessage;
 382                 e.xclient.serial = 0;
 383                 e.xclient.send_event = True;
 384                 e.xclient.message_type = server.atom._XEMBED;
 385                 e.xclient.window = id;
 386                 e.xclient.format = 32;
 387                 e.xclient.data.l[0] = CurrentTime;
 388                 e.xclient.data.l[1] = XEMBED_EMBEDDED_NOTIFY;
 389                 e.xclient.data.l[2] = 0;
 390                 e.xclient.data.l[3] = parent_window;
 391                 e.xclient.data.l[4] = 0;
 392                 XSendEvent(server.dsp, id, False, 0xFFFFFF, &e);
 393         }
 394
 395         traywin = g_new0(TrayWindow, 1);
 396         if (real_transparency)
 397                 traywin->id = parent_window;
 398         else
 399                 traywin->id = id;
 400         traywin->tray_id = id;
 401         traywin->hide = hide;
 402         traywin->wrong_format = wrong_format;
 403
 404         if (systray.sort == 3)
 405                 systray.list_icons = g_slist_prepend(systray.list_icons, traywin);
 406         else if (systray.sort == 2)
 407                 systray.list_icons = g_slist_append(systray.list_icons, traywin);
 408         else
 409                 systray.list_icons = g_slist_insert_sorted(systray.list_icons, traywin, compare_traywindows);
 410         systray.area.resize = 1;
 411         systray.area.redraw = 1;
 412         //printf("add_icon id %lx, %d\n", id, g_slist_length(systray.list_icons));
 413
 414         // watch for the icon trying to resize itself!
 415         XSelectInput(server.dsp, traywin->tray_id, StructureNotifyMask);
 416         if (real_transparency) {
 417                 XDamageCreate(server.dsp, traywin->id, XDamageReportRawRectangles);
 418                 XCompositeRedirectWindow(server.dsp, traywin->id, CompositeRedirectManual);
 419         }
 420
 421         // show the window
 422         if (!traywin->hide) {
 423                 XMapRaised(server.dsp, traywin->id);
 424                 XMapRaised(server.dsp, traywin->tray_id);
 425         }
 426
 427         // changed in systray force resize on panel
 428         panel->area.resize = 1;
 429         panel_refresh = 1;
 430         return TRUE;
 431 }
 432
 433
 434 void remove_icon(TrayWindow *traywin)
 435 {
 436         XErrorHandler old;
 437
 438         // remove from our list
 439         systray.list_icons = g_slist_remove(systray.list_icons, traywin);
 440         systray.area.resize = 1;
 441         systray.area.redraw = 1;
 442         //printf("remove_icon id %lx, %d\n", traywin->id);
 443
 444         XSelectInput(server.dsp, traywin->tray_id, NoEventMask);
 445
 446         // reparent to root
 447         error = FALSE;
 448         old = XSetErrorHandler(window_error_handler);
 449         if (!traywin->hide)
 450                 XUnmapWindow(server.dsp, traywin->id);
 451         XReparentWindow(server.dsp, traywin->tray_id, server.root_win, 0, 0);
 452         if (traywin->id != traywin->tray_id)
 453                 XDestroyWindow(server.dsp, traywin->id);
 454         XSync(server.dsp, False);
 455         XSetErrorHandler(old);
 456         g_free(traywin);
 457
 458         // changed in systray force resize on panel
 459         Panel *panel = systray.area.panel;
 460         panel->area.resize = 1;
 461         panel_refresh = 1;
 462 }
 463
 464
 465 void net_message(XClientMessageEvent *e)
 466 {
 467         unsigned long opcode;
 468         Window id;
 469
 470         opcode = e->data.l[1];
 471         switch (opcode) {
 472                 case SYSTEM_TRAY_REQUEST_DOCK:
 473                         id = e->data.l[2];
 474                         if (id) add_icon(id);
 475                         break;
 476
 477                 case SYSTEM_TRAY_BEGIN_MESSAGE:
 478                 case SYSTEM_TRAY_CANCEL_MESSAGE:
 479                         // we don't show baloons messages.
 480                         break;
 481
 482                 default:
 483                         if (opcode == server.atom._NET_SYSTEM_TRAY_MESSAGE_DATA)
 484                                 printf("message from dockapp: %s\n", e->data.b);
 485                         else
 486                                 fprintf(stderr, "SYSTEM_TRAY : unknown message type\n");
 487                         break;
 488         }
 489 }
 490
 491
 492 void systray_render_icons(TrayWindow* traywin)
 493 {
 494         // most systray icons support 32 bit depth, but some icons are still 24 bit.
 495         // We create a heuristic mask for these icons, i.e. we get the rgb value in the top left corner, and
 496         // mask out all pixel with the same rgb value
 497
 498         Picture picture_systray, picture_tray, picture_panel;
 499         Drawable mask, tray_pixmap;
 500         Panel* panel = systray.area.panel;
 501         XWindowAttributes attr;
 502         XGetWindowAttributes(server.dsp, traywin->id, &attr);
 503         XRenderPictFormat *format = XRenderFindVisualFormat(server.dsp, attr.visual);
 504         XRenderPictFormat *panel_format = XRenderFindVisualFormat(server.dsp, server.visual);
 505         if (traywin->wrong_format) {
 506                 imlib_context_set_drawable(traywin->id);
 507                 Imlib_Image image = imlib_create_image_from_drawable(0, 0, 0, traywin->width, traywin->height, 0);
 508                 imlib_context_set_image(image);
 509                 imlib_image_set_has_alpha(1);
 510                 DATA32* data = imlib_image_get_data();
 511                 createHeuristicMask(data, traywin->width, traywin->height);
 512                 imlib_image_put_back_data(data);
 513                 imlib_render_pixmaps_for_whole_image(&tray_pixmap, &mask);
 514                 picture_tray = XRenderCreatePicture( server.dsp, tray_pixmap, panel_format, 0, 0);
 515                 Picture mask2 = XRenderCreatePicture( server.dsp, mask, XRenderFindStandardFormat(server.dsp, PictStandardA1), 0, 0);
 516                 picture_systray = XRenderCreatePicture( server.dsp, systray.area.pix.pmap, panel_format, 0, 0);
 517                 picture_panel = XRenderCreatePicture(server.dsp, panel->main_win, panel_format, 0, 0);
 518                 XRenderComposite(server.dsp, PictOpOver, picture_tray, mask2, picture_systray, 0, 0, 0, 0, traywin->x-systray.area.posx, traywin->y-systray.area.posy, traywin->width, traywin->height);
 519                 XRenderComposite(server.dsp, PictOpOver, picture_tray, mask2, picture_panel, 0, 0, 0, 0, traywin->x, traywin->y, traywin->width, traywin->height);
 520                 imlib_free_pixmap_and_mask(tray_pixmap);
 521                 imlib_free_image();
 522         }
 523         else {
 524                 picture_tray = XRenderCreatePicture( server.dsp, traywin->id, format, 0, 0);
 525                 picture_systray = XRenderCreatePicture( server.dsp, systray.area.pix.pmap, panel_format, 0, 0);
 526                 picture_panel = XRenderCreatePicture(server.dsp, panel->main_win, panel_format, 0, 0);
 527                 XRenderComposite(server.dsp, PictOpOver, picture_tray, None, picture_systray, 0, 0, 0, 0, traywin->x-systray.area.posx, traywin->y-systray.area.posy, traywin->width, traywin->height);
 528                 XRenderComposite(server.dsp, PictOpOver, picture_tray, None, picture_panel, 0, 0, 0, 0, traywin->x, traywin->y, traywin->width, traywin->height);
 529         }
 530         XRenderFreePicture(server.dsp, picture_systray);
 531         XRenderFreePicture(server.dsp, picture_tray);
 532         XRenderFreePicture(server.dsp, picture_panel);
 533 }
 534
 535
 536 void refresh_systray_icon()
 537 {
 538         TrayWindow *traywin;
 539         GSList *l;
 540         for (l = systray.list_icons; l ; l = l->next) {
 541                 traywin = (TrayWindow*)l->data;
 542                 if (traywin->hide) continue;
 543                 if (real_transparency) systray_render_icons(traywin);
 544                 else XClearArea(server.dsp, traywin->id, 0, 0, traywin->width, traywin->height, True);
 545         }
 546         if (real_transparency)
 547                 XFlush(server.dsp);
 548 }