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 #ifdef HAVE_UNISTD_H
  30 # include <unistd.h>
  31 #endif
  32
  33 #include <X11/Xlib.h>
  34
  35 #define NONAMELESSUNION
  36 #include "windef.h"
  37 #include "winbase.h"
  38 #include "wingdi.h"
  39 #include "winuser.h"
  40 #include "commctrl.h"
  41 #include "shellapi.h"
  42
  43 #include "x11drv.h"
  44 #include "wine/list.h"
  45 #include "wine/debug.h"
  46
  47 WINE_DEFAULT_DEBUG_CHANNEL(systray);
  48
  49 /* an individual systray icon */
  50 struct tray_icon
  51 {
  52     struct list    entry;
  53     HICON          image;    /* the image to render */
  54     HWND           owner;    /* the HWND passed in to the Shell_NotifyIcon call */
  55     HWND           window;   /* the adaptor window */
  56     BOOL           layered;  /* whether we are using a layered window */
  57     HWND           tooltip;  /* Icon tooltip */
  58     UINT           state;    /* state flags */
  59     UINT           id;       /* the unique id given by the app */
  60     UINT           callback_message;
  61     int            display;  /* display index, or -1 if hidden */
  62     WCHAR          tiptext[128];    /* tooltip text */
  63     WCHAR          info_text[256];  /* info balloon text */
  64     WCHAR          info_title[64];  /* info balloon title */
  65     UINT           info_flags;      /* flags for info balloon */
  66     UINT           info_timeout;    /* timeout for info balloon */
  67     HICON          info_icon;       /* info balloon icon */
  68 };
  69
  70 static struct list icon_list = LIST_INIT( icon_list );
  71
  72 static const WCHAR icon_classname[] = {'_','_','w','i','n','e','x','1','1','_','t','r','a','y','_','i','c','o','n',0};
  73 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};
  74
  75 static BOOL show_icon( struct tray_icon *icon );
  76 static BOOL hide_icon( struct tray_icon *icon );
  77 static BOOL delete_icon( struct tray_icon *icon );
  78
  79 #define SYSTEM_TRAY_REQUEST_DOCK  0
  80 #define SYSTEM_TRAY_BEGIN_MESSAGE   1
  81 #define SYSTEM_TRAY_CANCEL_MESSAGE  2
  82
  83 Atom systray_atom = 0;
  84
  85 #define MIN_DISPLAYED 8
  86 #define ICON_BORDER 2
  87
  88 #define VALID_WIN_TIMER      1
  89 #define BALLOON_CREATE_TIMER 2
  90 #define BALLOON_SHOW_TIMER   3
  91
  92 #define VALID_WIN_TIMEOUT        2000
  93 #define BALLOON_CREATE_TIMEOUT   2000
  94 #define BALLOON_SHOW_MIN_TIMEOUT 10000
  95 #define BALLOON_SHOW_MAX_TIMEOUT 30000
  96
  97 static struct tray_icon *balloon_icon;
  98 static HWND balloon_window;
  99 static POINT balloon_pos;
 100
 101 /* stand-alone tray window */
 102 static HWND standalone_tray;
 103 static int icon_cx, icon_cy;
 104 static unsigned int nb_displayed;
 105
 106 /* retrieves icon record by owner window and ID */
 107 static struct tray_icon *get_icon(HWND owner, UINT id)
 108 {
 109     struct tray_icon *this;
 110
 111     LIST_FOR_EACH_ENTRY( this, &icon_list, struct tray_icon, entry )
 112         if ((this->id == id) && (this->owner == owner)) return this;
 113     return NULL;
 114 }
 115
 116 static void init_common_controls(void)
 117 {
 118     static BOOL initialized = FALSE;
 119
 120     if (!initialized)
 121     {
 122         INITCOMMONCONTROLSEX init_tooltip;
 123
 124         init_tooltip.dwSize = sizeof(INITCOMMONCONTROLSEX);
 125         init_tooltip.dwICC = ICC_TAB_CLASSES;
 126
 127         InitCommonControlsEx(&init_tooltip);
 128         initialized = TRUE;
 129     }
 130 }
 131
 132 /* create tooltip window for icon */
 133 static void create_tooltip(struct tray_icon *icon)
 134 {
 135     init_common_controls();
 136     icon->tooltip = CreateWindowExW( WS_EX_TOPMOST, TOOLTIPS_CLASSW, NULL,
 137                                      WS_POPUP | TTS_ALWAYSTIP,
 138                                      CW_USEDEFAULT, CW_USEDEFAULT,
 139                                      CW_USEDEFAULT, CW_USEDEFAULT,
 140                                      icon->window, NULL, NULL, NULL);
 141     if (icon->tooltip)
 142     {
 143         TTTOOLINFOW ti;
 144         ZeroMemory(&ti, sizeof(ti));
 145         ti.cbSize = sizeof(TTTOOLINFOW);
 146         ti.uFlags = TTF_SUBCLASS | TTF_IDISHWND;
 147         ti.hwnd = icon->window;
 148         ti.uId = (UINT_PTR)icon->window;
 149         ti.lpszText = icon->tiptext;
 150         SendMessageW(icon->tooltip, TTM_ADDTOOLW, 0, (LPARAM)&ti);
 151     }
 152 }
 153
 154 void update_systray_balloon_position(void)
 155 {
 156     RECT rect;
 157     POINT pos;
 158
 159     if (!balloon_icon) return;
 160     GetWindowRect( balloon_icon->window, &rect );
 161     pos.x = (rect.left + rect.right) / 2;
 162     pos.y = (rect.top + rect.bottom) / 2;
 163     if (pos.x == balloon_pos.x && pos.y == balloon_pos.y) return;  /* nothing changed */
 164     balloon_pos = pos;
 165     SendMessageW( balloon_window, TTM_TRACKPOSITION, 0, MAKELONG( pos.x, pos.y ));
 166 }
 167
 168 static void balloon_create_timer( struct tray_icon *icon )
 169 {
 170     TTTOOLINFOW ti;
 171
 172     init_common_controls();
 173     balloon_window = CreateWindowExW( WS_EX_TOPMOST, TOOLTIPS_CLASSW, NULL,
 174                                       WS_POPUP | TTS_ALWAYSTIP | TTS_NOPREFIX | TTS_BALLOON | TTS_CLOSE,
 175                                       CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT,
 176                                       icon->window, NULL, NULL, NULL);
 177
 178     memset( &ti, 0, sizeof(ti) );
 179     ti.cbSize = sizeof(TTTOOLINFOW);
 180     ti.hwnd = icon->window;
 181     ti.uId = (UINT_PTR)icon->window;
 182     ti.uFlags = TTF_TRACK | TTF_IDISHWND;
 183     ti.lpszText = icon->info_text;
 184     SendMessageW( balloon_window, TTM_ADDTOOLW, 0, (LPARAM)&ti );
 185     if ((icon->info_flags & NIIF_ICONMASK) == NIIF_USER)
 186         SendMessageW( balloon_window, TTM_SETTITLEW, (WPARAM)icon->info_icon, (LPARAM)icon->info_title );
 187     else
 188         SendMessageW( balloon_window, TTM_SETTITLEW, icon->info_flags, (LPARAM)icon->info_title );
 189     balloon_icon = icon;
 190     balloon_pos.x = balloon_pos.y = MAXLONG;
 191     update_systray_balloon_position();
 192     SendMessageW( balloon_window, TTM_TRACKACTIVATE, TRUE, (LPARAM)&ti );
 193     KillTimer( icon->window, BALLOON_CREATE_TIMER );
 194     SetTimer( icon->window, BALLOON_SHOW_TIMER, icon->info_timeout, NULL );
 195 }
 196
 197 static BOOL show_balloon( struct tray_icon *icon )
 198 {
 199     if (standalone_tray && !show_systray) return FALSE;  /* no systray window */
 200     if (!icon->window) return FALSE;  /* not displayed */
 201     if (!icon->info_text[0]) return FALSE;  /* no balloon */
 202     balloon_icon = icon;
 203     SetTimer( icon->window, BALLOON_CREATE_TIMER, BALLOON_CREATE_TIMEOUT, NULL );
 204     return TRUE;
 205 }
 206
 207 static void hide_balloon(void)
 208 {
 209     if (!balloon_icon) return;
 210     if (balloon_window)
 211     {
 212         KillTimer( balloon_icon->window, BALLOON_SHOW_TIMER );
 213         DestroyWindow( balloon_window );
 214         balloon_window = 0;
 215     }
 216     else KillTimer( balloon_icon->window, BALLOON_CREATE_TIMER );
 217     balloon_icon = NULL;
 218 }
 219
 220 static void show_next_balloon(void)
 221 {
 222     struct tray_icon *icon;
 223
 224     LIST_FOR_EACH_ENTRY( icon, &icon_list, struct tray_icon, entry )
 225         if (show_balloon( icon )) break;
 226 }
 227
 228 static void update_balloon( struct tray_icon *icon )
 229 {
 230     if (balloon_icon == icon)
 231     {
 232         hide_balloon();
 233         show_balloon( icon );
 234     }
 235     else if (!balloon_icon)
 236     {
 237         if (!show_balloon( icon )) return;
 238     }
 239     if (!balloon_icon) show_next_balloon();
 240 }
 241
 242 static void balloon_timer(void)
 243 {
 244     if (balloon_icon) balloon_icon->info_text[0] = 0;  /* clear text now that balloon has been shown */
 245     hide_balloon();
 246     show_next_balloon();
 247 }
 248
 249 /* synchronize tooltip text with tooltip window */
 250 static void update_tooltip_text(struct tray_icon *icon)
 251 {
 252     TTTOOLINFOW ti;
 253
 254     ZeroMemory(&ti, sizeof(ti));
 255     ti.cbSize = sizeof(TTTOOLINFOW);
 256     ti.uFlags = TTF_SUBCLASS | TTF_IDISHWND;
 257     ti.hwnd = icon->window;
 258     ti.uId = (UINT_PTR)icon->window;
 259     ti.lpszText = icon->tiptext;
 260
 261     SendMessageW(icon->tooltip, TTM_UPDATETIPTEXTW, 0, (LPARAM)&ti);
 262 }
 263
 264 /* get the size of the stand-alone tray window */
 265 static SIZE get_window_size(void)
 266 {
 267     SIZE size;
 268     RECT rect;
 269
 270     rect.left = 0;
 271     rect.top = 0;
 272     rect.right = icon_cx * max( nb_displayed, MIN_DISPLAYED );
 273     rect.bottom = icon_cy;
 274     AdjustWindowRect( &rect, WS_CAPTION, FALSE );
 275     size.cx = rect.right - rect.left;
 276     size.cy = rect.bottom - rect.top;
 277     return size;
 278 }
 279
 280 /* get the position of an icon in the stand-alone tray */
 281 static POINT get_icon_pos( struct tray_icon *icon )
 282 {
 283     POINT pos;
 284
 285     pos.x = icon_cx * icon->display;
 286     pos.y = 0;
 287     return pos;
 288 }
 289
 290 /* window procedure for the standalone tray window */
 291 static LRESULT WINAPI standalone_tray_wndproc( HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam )
 292 {
 293     switch (msg)
 294     {
 295     case WM_MOVE:
 296         update_systray_balloon_position();
 297         break;
 298     case WM_CLOSE:
 299         ShowWindow( hwnd, SW_HIDE );
 300         hide_balloon();
 301         show_systray = FALSE;
 302         return 0;
 303     case WM_DESTROY:
 304         standalone_tray = 0;
 305         break;
 306     }
 307     return DefWindowProcW( hwnd, msg, wparam, lparam );
 308 }
 309
 310 /* add an icon to the standalone tray window */
 311 static void add_to_standalone_tray( struct tray_icon *icon )
 312 {
 313     SIZE size;
 314     POINT pos;
 315
 316     if (!standalone_tray)
 317     {
 318         static const WCHAR winname[] = {'W','i','n','e',' ','S','y','s','t','e','m',' ','T','r','a','y',0};
 319
 320         size = get_window_size();
 321         standalone_tray = CreateWindowExW( 0, tray_classname, winname, WS_CAPTION | WS_SYSMENU,
 322                                            CW_USEDEFAULT, CW_USEDEFAULT, size.cx, size.cy, 0, 0, 0, 0 );
 323         if (!standalone_tray) return;
 324     }
 325
 326     icon->display = nb_displayed;
 327     pos = get_icon_pos( icon );
 328     icon->window = CreateWindowW( icon_classname, NULL, WS_CHILD | WS_VISIBLE,
 329                                   pos.x, pos.y, icon_cx, icon_cy, standalone_tray, NULL, NULL, icon );
 330     if (!icon->window)
 331     {
 332         icon->display = -1;
 333         return;
 334     }
 335     create_tooltip( icon );
 336
 337     nb_displayed++;
 338     size = get_window_size();
 339     SetWindowPos( standalone_tray, 0, 0, 0, size.cx, size.cy, SWP_NOMOVE | SWP_NOACTIVATE | SWP_NOZORDER );
 340     if (nb_displayed == 1 && show_systray) ShowWindow( standalone_tray, SW_SHOWNA );
 341     TRACE( "added %u now %d icons\n", icon->id, nb_displayed );
 342 }
 343
 344 /* remove an icon from the stand-alone tray */
 345 static void remove_from_standalone_tray( struct tray_icon *icon )
 346 {
 347     struct tray_icon *ptr;
 348     POINT pos;
 349
 350     if (icon->display == -1) return;
 351
 352     LIST_FOR_EACH_ENTRY( ptr, &icon_list, struct tray_icon, entry )
 353     {
 354         if (ptr == icon) continue;
 355         if (ptr->display < icon->display) continue;
 356         ptr->display--;
 357         pos = get_icon_pos( ptr );
 358         SetWindowPos( ptr->window, 0, pos.x, pos.y, 0, 0, SWP_NOSIZE | SWP_NOACTIVATE | SWP_NOZORDER );
 359     }
 360     icon->display = -1;
 361     if (!--nb_displayed) ShowWindow( standalone_tray, SW_HIDE );
 362     TRACE( "removed %u now %d icons\n", icon->id, nb_displayed );
 363 }
 364
 365 static void repaint_tray_icon( struct tray_icon *icon )
 366 {
 367     BLENDFUNCTION blend = { AC_SRC_OVER, 0, 255, AC_SRC_ALPHA };
 368     int width = GetSystemMetrics( SM_CXSMICON );
 369     int height = GetSystemMetrics( SM_CYSMICON );
 370     BITMAPINFO *info;
 371     HBITMAP dib, mask;
 372     HDC hdc;
 373     RECT rc;
 374     SIZE size;
 375     POINT pos;
 376     int i, x, y;
 377     void *color_bits, *mask_bits;
 378     DWORD *ptr;
 379     BOOL has_alpha = FALSE;
 380
 381     GetWindowRect( icon->window, &rc );
 382     size.cx = rc.right - rc.left;
 383     size.cy = rc.bottom - rc.top;
 384     pos.x = (size.cx - width) / 2;
 385     pos.y = (size.cy - height) / 2;
 386
 387     info = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, FIELD_OFFSET( BITMAPINFO, bmiColors[2] ));
 388     if (!info) return;
 389     info->bmiHeader.biSize = sizeof(info->bmiHeader);
 390     info->bmiHeader.biWidth = size.cx;
 391     info->bmiHeader.biHeight = size.cy;
 392     info->bmiHeader.biBitCount = 32;
 393     info->bmiHeader.biPlanes = 1;
 394     info->bmiHeader.biCompression = BI_RGB;
 395
 396     hdc = CreateCompatibleDC( 0 );
 397     if (!(dib = CreateDIBSection( 0, info, DIB_RGB_COLORS, &color_bits, NULL, 0 ))) goto done;
 398     SelectObject( hdc, dib );
 399     DrawIconEx( hdc, pos.x, pos.y, icon->image, width, height, 0, 0, DI_DEFAULTSIZE | DI_NORMAL );
 400
 401     /* check if the icon was drawn with an alpha channel */
 402     for (i = 0, ptr = color_bits; i < size.cx * size.cy; i++)
 403         if ((has_alpha = (ptr[i] & 0xff000000) != 0)) break;
 404
 405     if (!has_alpha)
 406     {
 407         unsigned int width_bytes = (size.cx + 31) / 32 * 4;
 408
 409         info->bmiHeader.biBitCount = 1;
 410         info->bmiColors[0].rgbRed      = 0;
 411         info->bmiColors[0].rgbGreen    = 0;
 412         info->bmiColors[0].rgbBlue     = 0;
 413         info->bmiColors[0].rgbReserved = 0;
 414         info->bmiColors[1].rgbRed      = 0xff;
 415         info->bmiColors[1].rgbGreen    = 0xff;
 416         info->bmiColors[1].rgbBlue     = 0xff;
 417         info->bmiColors[1].rgbReserved = 0;
 418
 419         if (!(mask = CreateDIBSection( 0, info, DIB_RGB_COLORS, &mask_bits, NULL, 0 ))) goto done;
 420         memset( mask_bits, 0xff, width_bytes * size.cy );
 421         SelectObject( hdc, mask );
 422         DrawIconEx( hdc, pos.x, pos.y, icon->image, width, height, 0, 0, DI_DEFAULTSIZE | DI_MASK );
 423
 424         for (y = 0, ptr = color_bits; y < size.cy; y++)
 425             for (x = 0; x < size.cx; x++, ptr++)
 426                 if (!((((BYTE *)mask_bits)[y * width_bytes + x / 8] << (x % 8)) & 0x80))
 427                     *ptr |= 0xff000000;
 428
 429         SelectObject( hdc, dib );
 430         DeleteObject( mask );
 431     }
 432
 433     UpdateLayeredWindow( icon->window, 0, NULL, NULL, hdc, NULL, 0, &blend, ULW_ALPHA );
 434 done:
 435     HeapFree (GetProcessHeap(), 0, info);
 436     if (hdc) DeleteDC( hdc );
 437     if (dib) DeleteObject( dib );
 438 }
 439
 440 /* window procedure for the individual tray icon window */
 441 static LRESULT WINAPI tray_icon_wndproc(HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam)
 442 {
 443     struct tray_icon *icon = NULL;
 444     BOOL ret;
 445
 446     TRACE("hwnd=%p, msg=0x%x\n", hwnd, msg);
 447
 448     /* set the icon data for the window from the data passed into CreateWindow */
 449     if (msg == WM_NCCREATE)
 450         SetWindowLongPtrW(hwnd, GWLP_USERDATA, (LPARAM)((const CREATESTRUCTW *)lparam)->lpCreateParams);
 451
 452     icon = (struct tray_icon *) GetWindowLongPtrW(hwnd, GWLP_USERDATA);
 453
 454     switch (msg)
 455     {
 456     case WM_CREATE:
 457         SetTimer( hwnd, VALID_WIN_TIMER, VALID_WIN_TIMEOUT, NULL );
 458         break;
 459
 460     case WM_SIZE:
 461         if (icon->window && icon->layered) repaint_tray_icon( icon );
 462         break;
 463
 464     case WM_PAINT:
 465         if (!icon->layered)
 466         {
 467             PAINTSTRUCT ps;
 468             RECT rc;
 469             HDC hdc;
 470             int cx = GetSystemMetrics( SM_CXSMICON );
 471             int cy = GetSystemMetrics( SM_CYSMICON );
 472
 473             hdc = BeginPaint(hwnd, &ps);
 474             GetClientRect(hwnd, &rc);
 475             TRACE("painting rect %s\n", wine_dbgstr_rect(&rc));
 476             DrawIconEx( hdc, (rc.left + rc.right - cx) / 2, (rc.top + rc.bottom - cy) / 2,
 477                         icon->image, cx, cy, 0, 0, DI_DEFAULTSIZE|DI_NORMAL );
 478             EndPaint(hwnd, &ps);
 479             return 0;
 480         }
 481         break;
 482
 483     case WM_MOUSEMOVE:
 484     case WM_LBUTTONDOWN:
 485     case WM_LBUTTONUP:
 486     case WM_RBUTTONDOWN:
 487     case WM_RBUTTONUP:
 488     case WM_MBUTTONDOWN:
 489     case WM_MBUTTONUP:
 490     case WM_LBUTTONDBLCLK:
 491     case WM_RBUTTONDBLCLK:
 492     case WM_MBUTTONDBLCLK:
 493         /* notify the owner hwnd of the message */
 494         TRACE("relaying 0x%x\n", msg);
 495         ret = PostMessageW(icon->owner, icon->callback_message, icon->id, msg);
 496         if (!ret && (GetLastError() == ERROR_INVALID_WINDOW_HANDLE))
 497         {
 498             WARN( "application window was destroyed, removing icon %u\n", icon->id );
 499             delete_icon( icon );
 500         }
 501         return 0;
 502
 503     case WM_WINDOWPOSCHANGED:
 504         update_systray_balloon_position();
 505         break;
 506
 507     case WM_TIMER:
 508         switch (wparam)
 509         {
 510         case VALID_WIN_TIMER:
 511             if (!IsWindow( icon->owner )) delete_icon( icon );
 512             break;
 513         case BALLOON_CREATE_TIMER:
 514             balloon_create_timer( icon );
 515             break;
 516         case BALLOON_SHOW_TIMER:
 517             balloon_timer();
 518             break;
 519         }
 520         return 0;
 521
 522     case WM_CLOSE:
 523         if (icon->display == -1)
 524         {
 525             TRACE( "icon %u no longer embedded\n", icon->id );
 526             hide_icon( icon );
 527             add_to_standalone_tray( icon );
 528         }
 529         return 0;
 530     }
 531     return DefWindowProcW( hwnd, msg, wparam, lparam );
 532 }
 533
 534 /* find the X11 window owner the system tray selection */
 535 static Window get_systray_selection_owner( Display *display )
 536 {
 537     return XGetSelectionOwner( display, systray_atom );
 538 }
 539
 540 static void get_systray_visual_info( Display *display, Window systray_window, XVisualInfo *info )
 541 {
 542     XVisualInfo *list, template;
 543     VisualID *visual_id;
 544     Atom type;
 545     int format, num;
 546     unsigned long count, remaining;
 547
 548     *info = default_visual;
 549     if (XGetWindowProperty( display, systray_window, x11drv_atom(_NET_SYSTEM_TRAY_VISUAL), 0,
 550                             65536/sizeof(CARD32), False, XA_VISUALID, &type, &format, &count,
 551                             &remaining, (unsigned char **)&visual_id ))
 552         return;
 553
 554     if (type == XA_VISUALID && format == 32)
 555     {
 556         template.visualid = visual_id[0];
 557         if ((list = XGetVisualInfo( display, VisualIDMask, &template, &num )))
 558         {
 559             *info = list[0];
 560             TRACE( "systray window %lx got visual %lx\n", systray_window, info->visualid );
 561             XFree( list );
 562         }
 563     }
 564     XFree( visual_id );
 565 }
 566
 567 static BOOL init_systray(void)
 568 {
 569     static BOOL init_done;
 570     WNDCLASSEXW class;
 571     Display *display;
 572
 573     if (root_window != DefaultRootWindow( gdi_display )) return FALSE;
 574     if (init_done) return TRUE;
 575
 576     icon_cx = GetSystemMetrics( SM_CXSMICON ) + 2 * ICON_BORDER;
 577     icon_cy = GetSystemMetrics( SM_CYSMICON ) + 2 * ICON_BORDER;
 578
 579     memset( &class, 0, sizeof(class) );
 580     class.cbSize        = sizeof(class);
 581     class.lpfnWndProc   = tray_icon_wndproc;
 582     class.hIcon         = LoadIconW(0, (LPCWSTR)IDI_WINLOGO);
 583     class.hCursor       = LoadCursorW( 0, (LPCWSTR)IDC_ARROW );
 584     class.lpszClassName = icon_classname;
 585     class.style         = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS;
 586
 587     if (!RegisterClassExW( &class ) && GetLastError() != ERROR_CLASS_ALREADY_EXISTS)
 588     {
 589         ERR( "Could not register icon tray window class\n" );
 590         return FALSE;
 591     }
 592
 593     class.lpfnWndProc   = standalone_tray_wndproc;
 594     class.hbrBackground = (HBRUSH)COLOR_WINDOW;
 595     class.lpszClassName = tray_classname;
 596     class.style         = CS_DBLCLKS;
 597
 598     if (!RegisterClassExW( &class ) && GetLastError() != ERROR_CLASS_ALREADY_EXISTS)
 599     {
 600         ERR( "Could not register standalone tray window class\n" );
 601         return FALSE;
 602     }
 603
 604     display = thread_init_display();
 605     if (DefaultScreen( display ) == 0)
 606         systray_atom = x11drv_atom(_NET_SYSTEM_TRAY_S0);
 607     else
 608     {
 609         char systray_buffer[29]; /* strlen(_NET_SYSTEM_TRAY_S4294967295)+1 */
 610         sprintf( systray_buffer, "_NET_SYSTEM_TRAY_S%u", DefaultScreen( display ) );
 611         systray_atom = XInternAtom( display, systray_buffer, False );
 612     }
 613     XSelectInput( display, root_window, StructureNotifyMask );
 614
 615     init_done = TRUE;
 616     return TRUE;
 617 }
 618
 619 /* dock the given icon with the NETWM system tray */
 620 static void dock_systray_icon( Display *display, struct tray_icon *icon, Window systray_window )
 621 {
 622     Window window;
 623     XEvent ev;
 624     XSetWindowAttributes attr;
 625     XVisualInfo visual;
 626     struct x11drv_win_data *data;
 627
 628     get_systray_visual_info( display, systray_window, &visual );
 629
 630     icon->layered = (visual.visualid != default_visual.visualid);
 631     icon->window = CreateWindowExW( icon->layered ? WS_EX_LAYERED : 0,
 632                                     icon_classname, NULL, WS_CLIPSIBLINGS | WS_POPUP,
 633                                     CW_USEDEFAULT, CW_USEDEFAULT, icon_cx, icon_cy,
 634                                     NULL, NULL, NULL, icon );
 635
 636     if (!(data = get_win_data( icon->window ))) return;
 637     if (icon->layered) set_window_visual( data, &visual );
 638     make_window_embedded( data );
 639     window = data->whole_window;
 640     release_win_data( data );
 641
 642     create_tooltip( icon );
 643     ShowWindow( icon->window, SW_SHOWNA );
 644
 645     TRACE( "icon window %p/%lx\n", icon->window, window );
 646
 647     /* send the docking request message */
 648     ev.xclient.type = ClientMessage;
 649     ev.xclient.window = systray_window;
 650     ev.xclient.message_type = x11drv_atom( _NET_SYSTEM_TRAY_OPCODE );
 651     ev.xclient.format = 32;
 652     ev.xclient.data.l[0] = CurrentTime;
 653     ev.xclient.data.l[1] = SYSTEM_TRAY_REQUEST_DOCK;
 654     ev.xclient.data.l[2] = window;
 655     ev.xclient.data.l[3] = 0;
 656     ev.xclient.data.l[4] = 0;
 657     XSendEvent( display, systray_window, False, NoEventMask, &ev );
 658
 659     if (!icon->layered)
 660     {
 661         attr.background_pixmap = ParentRelative;
 662         attr.bit_gravity = ForgetGravity;
 663         XChangeWindowAttributes( display, window, CWBackPixmap | CWBitGravity, &attr );
 664     }
 665     else repaint_tray_icon( icon );
 666 }
 667
 668 /* dock systray windows again with the new owner */
 669 void change_systray_owner( Display *display, Window systray_window )
 670 {
 671     struct tray_icon *icon;
 672
 673     TRACE( "new owner %lx\n", systray_window );
 674     LIST_FOR_EACH_ENTRY( icon, &icon_list, struct tray_icon, entry )
 675     {
 676         if (icon->display == -1) continue;
 677         hide_icon( icon );
 678         dock_systray_icon( display, icon, systray_window );
 679     }
 680 }
 681
 682 /* hide a tray icon */
 683 static BOOL hide_icon( struct tray_icon *icon )
 684 {
 685     struct x11drv_win_data *data;
 686
 687     TRACE( "id=0x%x, hwnd=%p\n", icon->id, icon->owner );
 688
 689     if (!icon->window) return TRUE;  /* already hidden */
 690
 691     /* make sure we don't try to unmap it, it confuses some systray docks */
 692     if ((data = get_win_data( icon->window )))
 693     {
 694         if (data->embedded) data->mapped = FALSE;
 695         release_win_data( data );
 696     }
 697     DestroyWindow(icon->window);
 698     DestroyWindow(icon->tooltip);
 699     icon->window = 0;
 700     icon->layered = FALSE;
 701     icon->tooltip = 0;
 702     remove_from_standalone_tray( icon );
 703     update_balloon( icon );
 704     return TRUE;
 705 }
 706
 707 /* make the icon visible */
 708 static BOOL show_icon( struct tray_icon *icon )
 709 {
 710     Window systray_window;
 711     Display *display = thread_init_display();
 712
 713     TRACE( "id=0x%x, hwnd=%p\n", icon->id, icon->owner );
 714
 715     if (icon->window) return TRUE;  /* already shown */
 716
 717     if ((systray_window = get_systray_selection_owner( display )))
 718         dock_systray_icon( display, icon, systray_window );
 719     else
 720         add_to_standalone_tray( icon );
 721
 722     update_balloon( icon );
 723     return TRUE;
 724 }
 725
 726 /* Modifies an existing icon record */
 727 static BOOL modify_icon( struct tray_icon *icon, NOTIFYICONDATAW *nid )
 728 {
 729     TRACE( "id=0x%x hwnd=%p flags=%x\n", nid->uID, nid->hWnd, nid->uFlags );
 730
 731     if (nid->uFlags & NIF_STATE)
 732     {
 733         icon->state = (icon->state & ~nid->dwStateMask) | (nid->dwState & nid->dwStateMask);
 734     }
 735
 736     if (nid->uFlags & NIF_ICON)
 737     {
 738         if (icon->image) DestroyIcon(icon->image);
 739         icon->image = CopyIcon(nid->hIcon);
 740         if (icon->window)
 741         {
 742             if (icon->display != -1) InvalidateRect( icon->window, NULL, TRUE );
 743             else if (icon->layered) repaint_tray_icon( icon );
 744             else
 745             {
 746                 Window win = X11DRV_get_whole_window( icon->window );
 747                 if (win) XClearArea( gdi_display, win, 0, 0, 0, 0, True );
 748             }
 749         }
 750     }
 751
 752     if (nid->uFlags & NIF_MESSAGE)
 753     {
 754         icon->callback_message = nid->uCallbackMessage;
 755     }
 756     if (nid->uFlags & NIF_TIP)
 757     {
 758         lstrcpynW(icon->tiptext, nid->szTip, sizeof(icon->tiptext)/sizeof(WCHAR));
 759         if (icon->tooltip) update_tooltip_text(icon);
 760     }
 761     if (nid->uFlags & NIF_INFO && nid->cbSize >= NOTIFYICONDATAA_V2_SIZE)
 762     {
 763         lstrcpynW( icon->info_text, nid->szInfo, sizeof(icon->info_text)/sizeof(WCHAR) );
 764         lstrcpynW( icon->info_title, nid->szInfoTitle, sizeof(icon->info_title)/sizeof(WCHAR) );
 765         icon->info_flags = nid->dwInfoFlags;
 766         icon->info_timeout = max(min(nid->u.uTimeout, BALLOON_SHOW_MAX_TIMEOUT), BALLOON_SHOW_MIN_TIMEOUT);
 767         icon->info_icon = nid->hBalloonIcon;
 768         update_balloon( icon );
 769     }
 770     if (icon->state & NIS_HIDDEN) hide_icon( icon );
 771     else show_icon( icon );
 772     return TRUE;
 773 }
 774
 775 /* Adds a new icon record to the list */
 776 static BOOL add_icon(NOTIFYICONDATAW *nid)
 777 {
 778     struct tray_icon  *icon;
 779
 780     TRACE("id=0x%x, hwnd=%p\n", nid->uID, nid->hWnd);
 781
 782     if ((icon = get_icon(nid->hWnd, nid->uID)))
 783     {
 784         WARN("duplicate tray icon add, buggy app?\n");
 785         return FALSE;
 786     }
 787
 788     if (!(icon = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*icon))))
 789     {
 790         ERR("out of memory\n");
 791         return FALSE;
 792     }
 793
 794     ZeroMemory(icon, sizeof(struct tray_icon));
 795     icon->id     = nid->uID;
 796     icon->owner  = nid->hWnd;
 797     icon->display = -1;
 798
 799     list_add_tail(&icon_list, &icon->entry);
 800
 801     return modify_icon( icon, nid );
 802 }
 803
 804 /* delete tray icon window and icon structure */
 805 static BOOL delete_icon( struct tray_icon *icon )
 806 {
 807     hide_icon( icon );
 808     list_remove( &icon->entry );
 809     DestroyIcon( icon->image );
 810     HeapFree( GetProcessHeap(), 0, icon );
 811     return TRUE;
 812 }
 813
 814
 815 /***********************************************************************
 816  *              wine_notify_icon   (X11DRV.@)
 817  *
 818  * Driver-side implementation of Shell_NotifyIcon.
 819  */
 820 int CDECL wine_notify_icon( DWORD msg, NOTIFYICONDATAW *data )
 821 {
 822     BOOL ret = FALSE;
 823     struct tray_icon *icon;
 824
 825     switch (msg)
 826     {
 827     case NIM_ADD:
 828         if (!init_systray()) return -1;  /* fall back to default handling */
 829         ret = add_icon( data );
 830         break;
 831     case NIM_DELETE:
 832         if ((icon = get_icon( data->hWnd, data->uID ))) ret = delete_icon( icon );
 833         break;
 834     case NIM_MODIFY:
 835         if ((icon = get_icon( data->hWnd, data->uID ))) ret = modify_icon( icon, data );
 836         break;
 837     default:
 838         FIXME( "unhandled tray message: %u\n", msg );
 839         break;
 840     }
 841     return ret;
 842 }