dlls/winex11.drv/systray.c

   1 /*
   2  * X11 system tray management
   3  *
   4  * Copyright (C) 2004 Mike Hearn, for CodeWeavers
   5  * Copyright (C) 2005 Robert Shearman
   6  * Copyright (C) 2008 Alexandre Julliard
   7  *
   8  * This library is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2.1 of the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with this library; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  21  */
  22
  23 #include "config.h"
  24
  25 #include <assert.h>
  26 #include <stdarg.h>
  27 #include <stdlib.h>
  28 #include <stdio.h>
  29 #include <unistd.h>
  30
  31 #include <X11/Xlib.h>
  32
  33 #define NONAMELESSUNION
  34 #include "windef.h"
  35 #include "winbase.h"
  36 #include "wingdi.h"
  37 #include "winuser.h"
  38 #include "commctrl.h"
  39 #include "shellapi.h"
  40
  41 #include "x11drv.h"
  42 #include "wine/list.h"
  43 #include "wine/debug.h"
  44
  45 WINE_DEFAULT_DEBUG_CHANNEL(systray);
  46
  47 /* an individual systray icon */
  48 struct tray_icon
  49 {
  50     struct list    entry;
  51     HICON          image;    /* the image to render */
  52     HWND           owner;    /* the HWND passed in to the Shell_NotifyIcon call */
  53     HWND           window;   /* the adaptor window */
  54     BOOL           layered;  /* whether we are using a layered window */
  55     HWND           tooltip;  /* Icon tooltip */
  56     UINT           state;    /* state flags */
  57     UINT           id;       /* the unique id given by the app */
  58     UINT           callback_message;
  59     int            display;  /* display index, or -1 if hidden */
  60     WCHAR          tiptext[128];    /* tooltip text */
  61     WCHAR          info_text[256];  /* info balloon text */
  62     WCHAR          info_title[64];  /* info balloon title */
  63     UINT           info_flags;      /* flags for info balloon */
  64     UINT           info_timeout;    /* timeout for info balloon */
  65     HICON          info_icon;       /* info balloon icon */
  66     UINT           version;         /* notify icon api version */
  67 };
  68
  69 static struct list icon_list = LIST_INIT( icon_list );
  70
  71 static const WCHAR icon_classname[] = {'_','_','w','i','n','e','x','1','1','_','t','r','a','y','_','i','c','o','n',0};
  72 static const WCHAR tray_classname[] = {'_','_','w','i','n','e','x','1','1','_','s','t','a','n','d','a','l','o','n','e','_','t','r','a','y',0};
  73
  74 static BOOL show_icon( struct tray_icon *icon );
  75 static BOOL hide_icon( struct tray_icon *icon );
  76 static BOOL delete_icon( struct tray_icon *icon );
  77
  78 #define SYSTEM_TRAY_REQUEST_DOCK  0
  79 #define SYSTEM_TRAY_BEGIN_MESSAGE   1
  80 #define SYSTEM_TRAY_CANCEL_MESSAGE  2
  81
  82 Atom systray_atom = 0;
  83
  84 #define MIN_DISPLAYED 8
  85 #define ICON_BORDER 2
  86
  87 #define BALLOON_CREATE_TIMER 1
  88 #define BALLOON_SHOW_TIMER   2
  89
  90 #define BALLOON_CREATE_TIMEOUT   2000
  91 #define BALLOON_SHOW_MIN_TIMEOUT 10000
  92 #define BALLOON_SHOW_MAX_TIMEOUT 30000
  93
  94 static struct tray_icon *balloon_icon;
  95 static HWND balloon_window;
  96 static POINT balloon_pos;
  97
  98 /* stand-alone tray window */
  99 static HWND standalone_tray;
 100 static int icon_cx, icon_cy;
 101 static unsigned int nb_displayed;
 102
 103 /* retrieves icon record by owner window and ID */
 104 static struct tray_icon *get_icon(HWND owner, UINT id)
 105 {
 106     struct tray_icon *this;
 107
 108     LIST_FOR_EACH_ENTRY( this, &icon_list, struct tray_icon, entry )
 109         if ((this->id == id) && (this->owner == owner)) return this;
 110     return NULL;
 111 }
 112
 113 static void init_common_controls(void)
 114 {
 115     static BOOL initialized = FALSE;
 116
 117     if (!initialized)
 118     {
 119         INITCOMMONCONTROLSEX init_tooltip;
 120
 121         init_tooltip.dwSize = sizeof(INITCOMMONCONTROLSEX);
 122         init_tooltip.dwICC = ICC_TAB_CLASSES;
 123
 124         InitCommonControlsEx(&init_tooltip);
 125         initialized = TRUE;
 126     }
 127 }
 128
 129 /* create tooltip window for icon */
 130 static void create_tooltip(struct tray_icon *icon)
 131 {
 132     init_common_controls();
 133     icon->tooltip = CreateWindowExW( WS_EX_TOPMOST, TOOLTIPS_CLASSW, NULL,
 134                                      WS_POPUP | TTS_ALWAYSTIP,
 135                                      CW_USEDEFAULT, CW_USEDEFAULT,
 136                                      CW_USEDEFAULT, CW_USEDEFAULT,
 137                                      icon->window, NULL, NULL, NULL);
 138     if (icon->tooltip)
 139     {
 140         TTTOOLINFOW ti;
 141         ZeroMemory(&ti, sizeof(ti));
 142         ti.cbSize = sizeof(TTTOOLINFOW);
 143         ti.uFlags = TTF_SUBCLASS | TTF_IDISHWND;
 144         ti.hwnd = icon->window;
 145         ti.uId = (UINT_PTR)icon->window;
 146         ti.lpszText = icon->tiptext;
 147         SendMessageW(icon->tooltip, TTM_ADDTOOLW, 0, (LPARAM)&ti);
 148     }
 149 }
 150
 151 void update_systray_balloon_position(void)
 152 {
 153     RECT rect;
 154     POINT pos;
 155
 156     if (!balloon_icon) return;
 157     GetWindowRect( balloon_icon->window, &rect );
 158     pos.x = (rect.left + rect.right) / 2;
 159     pos.y = (rect.top + rect.bottom) / 2;
 160     if (pos.x == balloon_pos.x && pos.y == balloon_pos.y) return;  /* nothing changed */
 161     balloon_pos = pos;
 162     SendMessageW( balloon_window, TTM_TRACKPOSITION, 0, MAKELONG( pos.x, pos.y ));
 163 }
 164
 165 static void balloon_create_timer( struct tray_icon *icon )
 166 {
 167     TTTOOLINFOW ti;
 168
 169     init_common_controls();
 170     balloon_window = CreateWindowExW( WS_EX_TOPMOST, TOOLTIPS_CLASSW, NULL,
 171                                       WS_POPUP | TTS_ALWAYSTIP | TTS_NOPREFIX | TTS_BALLOON | TTS_CLOSE,
 172                                       CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT,
 173                                       icon->window, NULL, NULL, NULL);
 174
 175     memset( &ti, 0, sizeof(ti) );
 176     ti.cbSize = sizeof(TTTOOLINFOW);
 177     ti.hwnd = icon->window;
 178     ti.uId = (UINT_PTR)icon->window;
 179     ti.uFlags = TTF_TRACK | TTF_IDISHWND;
 180     ti.lpszText = icon->info_text;
 181     SendMessageW( balloon_window, TTM_ADDTOOLW, 0, (LPARAM)&ti );
 182     if ((icon->info_flags & NIIF_ICONMASK) == NIIF_USER)
 183         SendMessageW( balloon_window, TTM_SETTITLEW, (WPARAM)icon->info_icon, (LPARAM)icon->info_title );
 184     else
 185         SendMessageW( balloon_window, TTM_SETTITLEW, icon->info_flags, (LPARAM)icon->info_title );
 186     balloon_icon = icon;
 187     balloon_pos.x = balloon_pos.y = MAXLONG;
 188     update_systray_balloon_position();
 189     SendMessageW( balloon_window, TTM_TRACKACTIVATE, TRUE, (LPARAM)&ti );
 190     KillTimer( icon->window, BALLOON_CREATE_TIMER );
 191     SetTimer( icon->window, BALLOON_SHOW_TIMER, icon->info_timeout, NULL );
 192 }
 193
 194 static BOOL show_balloon( struct tray_icon *icon )
 195 {
 196     if (standalone_tray && !show_systray) return FALSE;  /* no systray window */
 197     if (!icon->window) return FALSE;  /* not displayed */
 198     if (!icon->info_text[0]) return FALSE;  /* no balloon */
 199     balloon_icon = icon;
 200     SetTimer( icon->window, BALLOON_CREATE_TIMER, BALLOON_CREATE_TIMEOUT, NULL );
 201     return TRUE;
 202 }
 203
 204 static void hide_balloon(void)
 205 {
 206     if (!balloon_icon) return;
 207     if (balloon_window)
 208     {
 209         KillTimer( balloon_icon->window, BALLOON_SHOW_TIMER );
 210         DestroyWindow( balloon_window );
 211         balloon_window = 0;
 212     }
 213     else KillTimer( balloon_icon->window, BALLOON_CREATE_TIMER );
 214     balloon_icon = NULL;
 215 }
 216
 217 static void show_next_balloon(void)
 218 {
 219     struct tray_icon *icon;
 220
 221     LIST_FOR_EACH_ENTRY( icon, &icon_list, struct tray_icon, entry )
 222         if (show_balloon( icon )) break;
 223 }
 224
 225 static void update_balloon( struct tray_icon *icon )
 226 {
 227     if (balloon_icon == icon)
 228     {
 229         hide_balloon();
 230         show_balloon( icon );
 231     }
 232     else if (!balloon_icon)
 233     {
 234         if (!show_balloon( icon )) return;
 235     }
 236     if (!balloon_icon) show_next_balloon();
 237 }
 238
 239 static void balloon_timer(void)
 240 {
 241     if (balloon_icon) balloon_icon->info_text[0] = 0;  /* clear text now that balloon has been shown */
 242     hide_balloon();
 243     show_next_balloon();
 244 }
 245
 246 /* synchronize tooltip text with tooltip window */
 247 static void update_tooltip_text(struct tray_icon *icon)
 248 {
 249     TTTOOLINFOW ti;
 250
 251     ZeroMemory(&ti, sizeof(ti));
 252     ti.cbSize = sizeof(TTTOOLINFOW);
 253     ti.uFlags = TTF_SUBCLASS | TTF_IDISHWND;
 254     ti.hwnd = icon->window;
 255     ti.uId = (UINT_PTR)icon->window;
 256     ti.lpszText = icon->tiptext;
 257
 258     SendMessageW(icon->tooltip, TTM_UPDATETIPTEXTW, 0, (LPARAM)&ti);
 259 }
 260
 261 /* get the size of the stand-alone tray window */
 262 static SIZE get_window_size(void)
 263 {
 264     SIZE size;
 265     RECT rect;
 266
 267     rect.left = 0;
 268     rect.top = 0;
 269     rect.right = icon_cx * max( nb_displayed, MIN_DISPLAYED );
 270     rect.bottom = icon_cy;
 271     AdjustWindowRect( &rect, WS_CAPTION, FALSE );
 272     size.cx = rect.right - rect.left;
 273     size.cy = rect.bottom - rect.top;
 274     return size;
 275 }
 276
 277 /* get the position of an icon in the stand-alone tray */
 278 static POINT get_icon_pos( struct tray_icon *icon )
 279 {
 280     POINT pos;
 281
 282     pos.x = icon_cx * icon->display;
 283     pos.y = 0;
 284     return pos;
 285 }
 286
 287 /* window procedure for the standalone tray window */
 288 static LRESULT WINAPI standalone_tray_wndproc( HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam )
 289 {
 290     switch (msg)
 291     {
 292     case WM_MOVE:
 293         update_systray_balloon_position();
 294         break;
 295     case WM_CLOSE:
 296         ShowWindow( hwnd, SW_HIDE );
 297         hide_balloon();
 298         show_systray = FALSE;
 299         return 0;
 300     case WM_DESTROY:
 301         standalone_tray = 0;
 302         break;
 303     }
 304     return DefWindowProcW( hwnd, msg, wparam, lparam );
 305 }
 306
 307 /* add an icon to the standalone tray window */
 308 static void add_to_standalone_tray( struct tray_icon *icon )
 309 {
 310     SIZE size;
 311     POINT pos;
 312
 313     if (!standalone_tray)
 314     {
 315         static const WCHAR winname[] = {'W','i','n','e',' ','S','y','s','t','e','m',' ','T','r','a','y',0};
 316
 317         size = get_window_size();
 318         standalone_tray = CreateWindowExW( 0, tray_classname, winname, WS_CAPTION | WS_SYSMENU,
 319                                            CW_USEDEFAULT, CW_USEDEFAULT, size.cx, size.cy, 0, 0, 0, 0 );
 320         if (!standalone_tray) return;
 321     }
 322
 323     icon->display = nb_displayed;
 324     pos = get_icon_pos( icon );
 325     CreateWindowW( icon_classname, NULL, WS_CHILD | WS_VISIBLE,
 326                    pos.x, pos.y, icon_cx, icon_cy, standalone_tray, NULL, NULL, icon );
 327     if (!icon->window)
 328     {
 329         icon->display = -1;
 330         return;
 331     }
 332
 333     nb_displayed++;
 334     size = get_window_size();
 335     SetWindowPos( standalone_tray, 0, 0, 0, size.cx, size.cy, SWP_NOMOVE | SWP_NOACTIVATE | SWP_NOZORDER );
 336     if (nb_displayed == 1 && show_systray) ShowWindow( standalone_tray, SW_SHOWNA );
 337     TRACE( "added %u now %d icons\n", icon->id, nb_displayed );
 338 }
 339
 340 /* remove an icon from the stand-alone tray */
 341 static void remove_from_standalone_tray( struct tray_icon *icon )
 342 {
 343     struct tray_icon *ptr;
 344     POINT pos;
 345
 346     if (icon->display == -1) return;
 347
 348     LIST_FOR_EACH_ENTRY( ptr, &icon_list, struct tray_icon, entry )
 349     {
 350         if (ptr == icon) continue;
 351         if (ptr->display < icon->display) continue;
 352         ptr->display--;
 353         pos = get_icon_pos( ptr );
 354         SetWindowPos( ptr->window, 0, pos.x, pos.y, 0, 0, SWP_NOSIZE | SWP_NOACTIVATE | SWP_NOZORDER );
 355     }
 356     icon->display = -1;
 357     if (!--nb_displayed) ShowWindow( standalone_tray, SW_HIDE );
 358     TRACE( "removed %u now %d icons\n", icon->id, nb_displayed );
 359 }
 360
 361 static void repaint_tray_icon( struct tray_icon *icon )
 362 {
 363     BLENDFUNCTION blend = { AC_SRC_OVER, 0, 255, AC_SRC_ALPHA };
 364     int width = GetSystemMetrics( SM_CXSMICON );
 365     int height = GetSystemMetrics( SM_CYSMICON );
 366     BITMAPINFO *info;
 367     HBITMAP dib, mask;
 368     HDC hdc;
 369     RECT rc;
 370     SIZE size;
 371     POINT pos;
 372     int i, x, y;
 373     void *color_bits, *mask_bits;
 374     DWORD *ptr;
 375     BOOL has_alpha = FALSE;
 376
 377     GetWindowRect( icon->window, &rc );
 378     size.cx = rc.right - rc.left;
 379     size.cy = rc.bottom - rc.top;
 380     pos.x = (size.cx - width) / 2;
 381     pos.y = (size.cy - height) / 2;
 382
 383     info = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, FIELD_OFFSET( BITMAPINFO, bmiColors[2] ));
 384     if (!info) return;
 385     info->bmiHeader.biSize = sizeof(info->bmiHeader);
 386     info->bmiHeader.biWidth = size.cx;
 387     info->bmiHeader.biHeight = size.cy;
 388     info->bmiHeader.biBitCount = 32;
 389     info->bmiHeader.biPlanes = 1;
 390     info->bmiHeader.biCompression = BI_RGB;
 391
 392     hdc = CreateCompatibleDC( 0 );
 393     if (!(dib = CreateDIBSection( 0, info, DIB_RGB_COLORS, &color_bits, NULL, 0 ))) goto done;
 394     SelectObject( hdc, dib );
 395     DrawIconEx( hdc, pos.x, pos.y, icon->image, width, height, 0, 0, DI_DEFAULTSIZE | DI_NORMAL );
 396
 397     /* check if the icon was drawn with an alpha channel */
 398     for (i = 0, ptr = color_bits; i < size.cx * size.cy; i++)
 399         if ((has_alpha = (ptr[i] & 0xff000000) != 0)) break;
 400
 401     if (!has_alpha)
 402     {
 403         unsigned int width_bytes = (size.cx + 31) / 32 * 4;
 404
 405         info->bmiHeader.biBitCount = 1;
 406         info->bmiColors[0].rgbRed      = 0;
 407         info->bmiColors[0].rgbGreen    = 0;
 408         info->bmiColors[0].rgbBlue     = 0;
 409         info->bmiColors[0].rgbReserved = 0;
 410         info->bmiColors[1].rgbRed      = 0xff;
 411         info->bmiColors[1].rgbGreen    = 0xff;
 412         info->bmiColors[1].rgbBlue     = 0xff;
 413         info->bmiColors[1].rgbReserved = 0;
 414
 415         if (!(mask = CreateDIBSection( 0, info, DIB_RGB_COLORS, &mask_bits, NULL, 0 ))) goto done;
 416         memset( mask_bits, 0xff, width_bytes * size.cy );
 417         SelectObject( hdc, mask );
 418         DrawIconEx( hdc, pos.x, pos.y, icon->image, width, height, 0, 0, DI_DEFAULTSIZE | DI_MASK );
 419
 420         for (y = 0, ptr = color_bits; y < size.cy; y++)
 421             for (x = 0; x < size.cx; x++, ptr++)
 422                 if (!((((BYTE *)mask_bits)[y * width_bytes + x / 8] << (x % 8)) & 0x80))
 423                     *ptr |= 0xff000000;
 424
 425         SelectObject( hdc, dib );
 426         DeleteObject( mask );
 427     }
 428
 429     UpdateLayeredWindow( icon->window, 0, NULL, NULL, hdc, NULL, 0, &blend, ULW_ALPHA );
 430 done:
 431     HeapFree (GetProcessHeap(), 0, info);
 432     if (hdc) DeleteDC( hdc );
 433     if (dib) DeleteObject( dib );
 434 }
 435
 436 static BOOL notify_owner( struct tray_icon *icon, UINT msg, LPARAM lparam )
 437 {
 438     WPARAM wp = icon->id;
 439     LPARAM lp = msg;
 440
 441     if (icon->version >= NOTIFYICON_VERSION_4)
 442     {
 443         POINT pt = { (short)LOWORD(lparam), (short)HIWORD(lparam) };
 444
 445         ClientToScreen( icon->window, &pt );
 446         wp = MAKEWPARAM( pt.x, pt.y );
 447         lp = MAKELPARAM( msg, icon->id );
 448     }
 449
 450     TRACE( "relaying 0x%x\n", msg );
 451     if (!SendNotifyMessageW( icon->owner, icon->callback_message, wp, lp ) &&
 452         (GetLastError() == ERROR_INVALID_WINDOW_HANDLE))
 453     {
 454         WARN( "application window was destroyed, removing icon %u\n", icon->id );
 455         delete_icon( icon );
 456         return FALSE;
 457     }
 458     return TRUE;
 459 }
 460
 461 /* window procedure for the individual tray icon window */
 462 static LRESULT WINAPI tray_icon_wndproc(HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam)
 463 {
 464     struct tray_icon *icon = NULL;
 465
 466     TRACE("hwnd=%p, msg=0x%x\n", hwnd, msg);
 467
 468     /* set the icon data for the window from the data passed into CreateWindow */
 469     if (msg == WM_NCCREATE)
 470         SetWindowLongPtrW(hwnd, GWLP_USERDATA, (LPARAM)((const CREATESTRUCTW *)lparam)->lpCreateParams);
 471
 472     icon = (struct tray_icon *) GetWindowLongPtrW(hwnd, GWLP_USERDATA);
 473
 474     switch (msg)
 475     {
 476     case WM_CREATE:
 477         icon->window = hwnd;
 478         create_tooltip( icon );
 479         break;
 480
 481     case WM_SIZE:
 482         if (icon->window && icon->layered) repaint_tray_icon( icon );
 483         break;
 484
 485     case WM_PAINT:
 486         if (!icon->layered)
 487         {
 488             PAINTSTRUCT ps;
 489             RECT rc;
 490             HDC hdc;
 491             int cx = GetSystemMetrics( SM_CXSMICON );
 492             int cy = GetSystemMetrics( SM_CYSMICON );
 493
 494             hdc = BeginPaint(hwnd, &ps);
 495             GetClientRect(hwnd, &rc);
 496             TRACE("painting rect %s\n", wine_dbgstr_rect(&rc));
 497             DrawIconEx( hdc, (rc.left + rc.right - cx) / 2, (rc.top + rc.bottom - cy) / 2,
 498                         icon->image, cx, cy, 0, 0, DI_DEFAULTSIZE|DI_NORMAL );
 499             EndPaint(hwnd, &ps);
 500             return 0;
 501         }
 502         break;
 503
 504     case WM_MOUSEMOVE:
 505     case WM_LBUTTONDOWN:
 506     case WM_RBUTTONDOWN:
 507     case WM_MBUTTONDOWN:
 508     case WM_MBUTTONUP:
 509     case WM_LBUTTONDBLCLK:
 510     case WM_RBUTTONDBLCLK:
 511     case WM_MBUTTONDBLCLK:
 512         notify_owner( icon, msg, lparam );
 513         break;
 514
 515     case WM_LBUTTONUP:
 516         if (!notify_owner( icon, msg, lparam )) break;
 517         if (icon->version > 0) notify_owner( icon, NIN_SELECT, lparam );
 518         break;
 519
 520     case WM_RBUTTONUP:
 521         if (!notify_owner( icon, msg, lparam )) break;
 522         if (icon->version > 0) notify_owner( icon, WM_CONTEXTMENU, lparam );
 523         break;
 524
 525     case WM_WINDOWPOSCHANGED:
 526         update_systray_balloon_position();
 527         break;
 528
 529     case WM_TIMER:
 530         switch (wparam)
 531         {
 532         case BALLOON_CREATE_TIMER:
 533             balloon_create_timer( icon );
 534             break;
 535         case BALLOON_SHOW_TIMER:
 536             balloon_timer();
 537             break;
 538         }
 539         return 0;
 540
 541     case WM_CLOSE:
 542         if (icon->display == -1)
 543         {
 544             TRACE( "icon %u no longer embedded\n", icon->id );
 545             hide_icon( icon );
 546             add_to_standalone_tray( icon );
 547         }
 548         return 0;
 549     }
 550     return DefWindowProcW( hwnd, msg, wparam, lparam );
 551 }
 552
 553 /* find the X11 window owner the system tray selection */
 554 static Window get_systray_selection_owner( Display *display )
 555 {
 556     return XGetSelectionOwner( display, systray_atom );
 557 }
 558
 559 static void get_systray_visual_info( Display *display, Window systray_window, XVisualInfo *info )
 560 {
 561     XVisualInfo *list, template;
 562     VisualID *visual_id;
 563     Atom type;
 564     int format, num;
 565     unsigned long count, remaining;
 566
 567     *info = default_visual;
 568     if (XGetWindowProperty( display, systray_window, x11drv_atom(_NET_SYSTEM_TRAY_VISUAL), 0,
 569                             65536/sizeof(CARD32), False, XA_VISUALID, &type, &format, &count,
 570                             &remaining, (unsigned char **)&visual_id ))
 571         return;
 572
 573     if (type == XA_VISUALID && format == 32)
 574     {
 575         template.visualid = visual_id[0];
 576         if ((list = XGetVisualInfo( display, VisualIDMask, &template, &num )))
 577         {
 578             *info = list[0];
 579             TRACE( "systray window %lx got visual %lx\n", systray_window, info->visualid );
 580             XFree( list );
 581         }
 582     }
 583     XFree( visual_id );
 584 }
 585
 586 static BOOL init_systray(void)
 587 {
 588     static BOOL init_done;
 589     WNDCLASSEXW class;
 590
 591     if (init_done) return TRUE;
 592     if (!X11DRV_CALL( systray_init, NULL ))
 593     {
 594         init_done = TRUE;
 595         return FALSE;
 596     }
 597
 598     icon_cx = GetSystemMetrics( SM_CXSMICON ) + 2 * ICON_BORDER;
 599     icon_cy = GetSystemMetrics( SM_CYSMICON ) + 2 * ICON_BORDER;
 600
 601     memset( &class, 0, sizeof(class) );
 602     class.cbSize        = sizeof(class);
 603     class.lpfnWndProc   = tray_icon_wndproc;
 604     class.hIcon         = LoadIconW(0, (LPCWSTR)IDI_WINLOGO);
 605     class.hCursor       = LoadCursorW( 0, (LPCWSTR)IDC_ARROW );
 606     class.lpszClassName = icon_classname;
 607     class.style         = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS;
 608
 609     if (!RegisterClassExW( &class ) && GetLastError() != ERROR_CLASS_ALREADY_EXISTS)
 610     {
 611         ERR( "Could not register icon tray window class\n" );
 612         return FALSE;
 613     }
 614
 615     class.lpfnWndProc   = standalone_tray_wndproc;
 616     class.hbrBackground = (HBRUSH)COLOR_WINDOW;
 617     class.lpszClassName = tray_classname;
 618     class.style         = CS_DBLCLKS;
 619
 620     if (!RegisterClassExW( &class ) && GetLastError() != ERROR_CLASS_ALREADY_EXISTS)
 621     {
 622         ERR( "Could not register standalone tray window class\n" );
 623         return FALSE;
 624     }
 625
 626     init_done = TRUE;
 627     return TRUE;
 628 }
 629
 630 /* dock the given icon with the NETWM system tray */
 631 static void dock_systray_icon( Display *display, struct tray_icon *icon, Window systray_window )
 632 {
 633     Window window;
 634     XEvent ev;
 635     XSetWindowAttributes attr;
 636     XVisualInfo visual;
 637     struct x11drv_win_data *data;
 638
 639     get_systray_visual_info( display, systray_window, &visual );
 640
 641     icon->layered = (visual.depth == 32);
 642     CreateWindowExW( icon->layered ? WS_EX_LAYERED : 0,
 643                      icon_classname, NULL, WS_CLIPSIBLINGS | WS_POPUP,
 644                      CW_USEDEFAULT, CW_USEDEFAULT, icon_cx, icon_cy,
 645                      NULL, NULL, NULL, icon );
 646
 647     if (!(data = get_win_data( icon->window ))) return;
 648     if (icon->layered) set_window_visual( data, &visual, TRUE );
 649     make_window_embedded( data );
 650     window = data->whole_window;
 651     release_win_data( data );
 652
 653     ShowWindow( icon->window, SW_SHOWNA );
 654
 655     TRACE( "icon window %p/%lx\n", icon->window, window );
 656
 657     /* send the docking request message */
 658     ev.xclient.type = ClientMessage;
 659     ev.xclient.window = systray_window;
 660     ev.xclient.message_type = x11drv_atom( _NET_SYSTEM_TRAY_OPCODE );
 661     ev.xclient.format = 32;
 662     ev.xclient.data.l[0] = CurrentTime;
 663     ev.xclient.data.l[1] = SYSTEM_TRAY_REQUEST_DOCK;
 664     ev.xclient.data.l[2] = window;
 665     ev.xclient.data.l[3] = 0;
 666     ev.xclient.data.l[4] = 0;
 667     XSendEvent( display, systray_window, False, NoEventMask, &ev );
 668
 669     if (!icon->layered)
 670     {
 671         attr.background_pixmap = ParentRelative;
 672         attr.bit_gravity = ForgetGravity;
 673         XChangeWindowAttributes( display, window, CWBackPixmap | CWBitGravity, &attr );
 674     }
 675     else repaint_tray_icon( icon );
 676 }
 677
 678 /* dock systray windows again with the new owner */
 679 void change_systray_owner( Display *display, Window systray_window )
 680 {
 681     struct tray_icon *icon;
 682
 683     TRACE( "new owner %lx\n", systray_window );
 684     LIST_FOR_EACH_ENTRY( icon, &icon_list, struct tray_icon, entry )
 685     {
 686         if (icon->display == -1) continue;
 687         hide_icon( icon );
 688         dock_systray_icon( display, icon, systray_window );
 689     }
 690 }
 691
 692 /* hide a tray icon */
 693 static BOOL hide_icon( struct tray_icon *icon )
 694 {
 695     TRACE( "id=0x%x, hwnd=%p\n", icon->id, icon->owner );
 696
 697     if (!icon->window) return TRUE;  /* already hidden */
 698
 699     X11DRV_CALL( systray_hide, &icon->window );
 700     DestroyWindow(icon->window);
 701     DestroyWindow(icon->tooltip);
 702     icon->window = 0;
 703     icon->layered = FALSE;
 704     icon->tooltip = 0;
 705     remove_from_standalone_tray( icon );
 706     update_balloon( icon );
 707     return TRUE;
 708 }
 709
 710 /* make the icon visible */
 711 static BOOL show_icon( struct tray_icon *icon )
 712 {
 713     Window systray_window;
 714     Display *display = thread_init_display();
 715
 716     TRACE( "id=0x%x, hwnd=%p\n", icon->id, icon->owner );
 717
 718     if (icon->window) return TRUE;  /* already shown */
 719
 720     if ((systray_window = get_systray_selection_owner( display )))
 721         dock_systray_icon( display, icon, systray_window );
 722     else
 723         add_to_standalone_tray( icon );
 724
 725     update_balloon( icon );
 726     return TRUE;
 727 }
 728
 729 /* Modifies an existing icon record */
 730 static BOOL modify_icon( struct tray_icon *icon, NOTIFYICONDATAW *nid )
 731 {
 732     TRACE( "id=0x%x hwnd=%p flags=%x\n", nid->uID, nid->hWnd, nid->uFlags );
 733
 734     if (nid->uFlags & NIF_STATE)
 735     {
 736         icon->state = (icon->state & ~nid->dwStateMask) | (nid->dwState & nid->dwStateMask);
 737     }
 738
 739     if (nid->uFlags & NIF_ICON)
 740     {
 741         if (icon->image) DestroyIcon(icon->image);
 742         icon->image = CopyIcon(nid->hIcon);
 743         if (icon->window)
 744         {
 745             if (icon->display != -1) InvalidateRect( icon->window, NULL, TRUE );
 746             else if (icon->layered) repaint_tray_icon( icon );
 747             else X11DRV_CALL( systray_clear, &icon->window );
 748         }
 749     }
 750
 751     if (nid->uFlags & NIF_MESSAGE)
 752     {
 753         icon->callback_message = nid->uCallbackMessage;
 754     }
 755     if (nid->uFlags & NIF_TIP)
 756     {
 757         lstrcpynW(icon->tiptext, nid->szTip, ARRAY_SIZE( icon->tiptext ));
 758         if (icon->tooltip) update_tooltip_text(icon);
 759     }
 760     if (nid->uFlags & NIF_INFO && nid->cbSize >= NOTIFYICONDATAA_V2_SIZE)
 761     {
 762         lstrcpynW( icon->info_text, nid->szInfo, ARRAY_SIZE( icon->info_text ));
 763         lstrcpynW( icon->info_title, nid->szInfoTitle, ARRAY_SIZE( icon->info_title ));
 764         icon->info_flags = nid->dwInfoFlags;
 765         icon->info_timeout = max(min(nid->u.uTimeout, BALLOON_SHOW_MAX_TIMEOUT), BALLOON_SHOW_MIN_TIMEOUT);
 766         icon->info_icon = nid->hBalloonIcon;
 767         update_balloon( icon );
 768     }
 769     if (icon->state & NIS_HIDDEN) hide_icon( icon );
 770     else show_icon( icon );
 771     return TRUE;
 772 }
 773
 774 /* Adds a new icon record to the list */
 775 static BOOL add_icon(NOTIFYICONDATAW *nid)
 776 {
 777     struct tray_icon  *icon;
 778
 779     TRACE("id=0x%x, hwnd=%p\n", nid->uID, nid->hWnd);
 780
 781     if ((icon = get_icon(nid->hWnd, nid->uID)))
 782     {
 783         WARN("duplicate tray icon add, buggy app?\n");
 784         return FALSE;
 785     }
 786
 787     if (!(icon = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*icon))))
 788     {
 789         ERR("out of memory\n");
 790         return FALSE;
 791     }
 792
 793     ZeroMemory(icon, sizeof(struct tray_icon));
 794     icon->id     = nid->uID;
 795     icon->owner  = nid->hWnd;
 796     icon->display = -1;
 797
 798     list_add_tail(&icon_list, &icon->entry);
 799
 800     return modify_icon( icon, nid );
 801 }
 802
 803 /* delete tray icon window and icon structure */
 804 static BOOL delete_icon( struct tray_icon *icon )
 805 {
 806     hide_icon( icon );
 807     list_remove( &icon->entry );
 808     DestroyIcon( icon->image );
 809     HeapFree( GetProcessHeap(), 0, icon );
 810     return TRUE;
 811 }
 812
 813 /* cleanup all icons for a given window */
 814 static void cleanup_icons( HWND owner )
 815 {
 816     struct tray_icon *this, *next;
 817
 818     LIST_FOR_EACH_ENTRY_SAFE( this, next, &icon_list, struct tray_icon, entry )
 819         if (this->owner == owner) delete_icon( this );
 820 }
 821
 822
 823 /***********************************************************************
 824  *              wine_notify_icon   (X11DRV.@)
 825  *
 826  * Driver-side implementation of Shell_NotifyIcon.
 827  */
 828 int CDECL wine_notify_icon( DWORD msg, NOTIFYICONDATAW *data )
 829 {
 830     BOOL ret = FALSE;
 831     struct tray_icon *icon;
 832
 833     switch (msg)
 834     {
 835     case NIM_ADD:
 836         if (!init_systray()) return -1;  /* fall back to default handling */
 837         ret = add_icon( data );
 838         break;
 839     case NIM_DELETE:
 840         if ((icon = get_icon( data->hWnd, data->uID ))) ret = delete_icon( icon );
 841         break;
 842     case NIM_MODIFY:
 843         if ((icon = get_icon( data->hWnd, data->uID ))) ret = modify_icon( icon, data );
 844         break;
 845     case NIM_SETVERSION:
 846         if ((icon = get_icon( data->hWnd, data->uID )))
 847         {
 848             icon->version = data->u.uVersion;
 849             ret = TRUE;
 850         }
 851         break;
 852     case 0xdead:  /* Wine extension: owner window has died */
 853         cleanup_icons( data->hWnd );
 854         break;
 855     default:
 856         FIXME( "unhandled tray message: %u\n", msg );
 857         break;
 858     }
 859     return ret;
 860 }