git.mutantstargoat.com Git - freeglut/blob - src/blackberry/fg_main_blackberry.c

   1 /*
   2  * fg_main_blackberry.c
   3  *
   4  * The BlackBerry-specific windows message processing methods.
   5  *
   6  * Copyright (c) 1999-2000 Pawel W. Olszta. All Rights Reserved.
   7  * Written by Pawel W. Olszta, <olszta@sourceforge.net>
   8  * Copied for Platform code by Evan Felix <karcaw at gmail.com>
   9  * Copyright (C) 2012  Sylvain Beucler
  10  * Copyright (C) 2013  Vincent Simonetti
  11  *
  12  * Permission is hereby granted, free of charge, to any person obtaining a
  13  * copy of this software and associated documentation files (the "Software"),
  14  * to deal in the Software without restriction, including without limitation
  15  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  16  * and/or sell copies of the Software, and to permit persons to whom the
  17  * Software is furnished to do so, subject to the following conditions:
  18  *
  19  * The above copyright notice and this permission notice shall be included
  20  * in all copies or substantial portions of the Software.
  21  *
  22  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  23  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  24  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  25  * PAWEL W. OLSZTA BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
  26  * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  27  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  28  */
  29
  30 #include <GL/freeglut.h>
  31 #include "fg_internal.h"
  32 #include "egl/fg_window_egl.h"
  33
  34 #include <slog2.h>
  35 #define LOGI(...) ((void)slog2fa(NULL, 1337, SLOG2_INFO, __VA_ARGS__))
  36 #define LOGW(...) ((void)slog2fa(NULL, 1337, SLOG2_WARNING, __VA_ARGS__))
  37 #include <sys/keycodes.h>
  38 #include <input/screen_helpers.h>
  39 #include <bps/bps.h>
  40 #include <bps/event.h>
  41 #include <bps/screen.h>
  42 #include <bps/navigator.h>
  43
  44 extern void fghOnReshapeNotify(SFG_Window *window, int width, int height, GLboolean forceNotify);
  45 extern void fghOnPositionNotify(SFG_Window *window, int x, int y, GLboolean forceNotify);
  46 extern void fgPlatformFullScreenToggle( SFG_Window *win );
  47 extern void fgPlatformPositionWindow( SFG_Window *window, int x, int y );
  48 extern void fgPlatformReshapeWindow ( SFG_Window *window, int width, int height );
  49 extern void fgPlatformPushWindow( SFG_Window *window );
  50 extern void fgPlatformPopWindow( SFG_Window *window );
  51 extern void fgPlatformHideWindow( SFG_Window *window );
  52 extern void fgPlatformIconifyWindow( SFG_Window *window );
  53 extern void fgPlatformShowWindow( SFG_Window *window );
  54
  55 static struct touchscreen touchscreen;
  56
  57 unsigned int key_special(int qnxKeycode)
  58 {
  59   switch(qnxKeycode) {
  60   case KEYCODE_F1:
  61         return GLUT_KEY_F1;
  62   case KEYCODE_F2:
  63         return GLUT_KEY_F2;
  64   case KEYCODE_F3:
  65         return GLUT_KEY_F3;
  66   case KEYCODE_F4:
  67     return GLUT_KEY_F4;
  68   case KEYCODE_F5:
  69         return GLUT_KEY_F5;
  70   case KEYCODE_F6:
  71         return GLUT_KEY_F6;
  72   case KEYCODE_F7:
  73         return GLUT_KEY_F7;
  74   case KEYCODE_F8:
  75         return GLUT_KEY_F8;
  76   case KEYCODE_F9:
  77         return GLUT_KEY_F9;
  78   case KEYCODE_F10:
  79     return GLUT_KEY_F10;
  80   case KEYCODE_F11:
  81     return GLUT_KEY_F11;
  82   case KEYCODE_F12:
  83     return GLUT_KEY_F12;
  84   case KEYCODE_PG_UP:
  85     return GLUT_KEY_PAGE_UP;
  86   case KEYCODE_PG_DOWN:
  87     return GLUT_KEY_PAGE_DOWN;
  88   case KEYCODE_HOME:
  89     return GLUT_KEY_HOME;
  90   case KEYCODE_END:
  91     return GLUT_KEY_END;
  92   case KEYCODE_INSERT:
  93     return GLUT_KEY_INSERT;
  94   case KEYCODE_UP:
  95   //case KEYCODE_KP_UP:
  96     return GLUT_KEY_UP;
  97   case KEYCODE_DOWN:
  98   //case KEYCODE_KP_DOWN:
  99         return GLUT_KEY_DOWN;
 100   case KEYCODE_LEFT:
 101   //case KEYCODE_KP_LEFT:
 102     return GLUT_KEY_LEFT;
 103   case KEYCODE_RIGHT:
 104   //case KEYCODE_KP_RIGHT:
 105         return GLUT_KEY_RIGHT;
 106   case KEYCODE_NUM_LOCK:
 107     return GLUT_KEY_NUM_LOCK;
 108   case KEYCODE_LEFT_ALT:
 109     return GLUT_KEY_ALT_L;
 110   case KEYCODE_RIGHT_ALT:
 111     return GLUT_KEY_ALT_R;
 112   case KEYCODE_LEFT_SHIFT:
 113     return GLUT_KEY_SHIFT_L;
 114   case KEYCODE_RIGHT_SHIFT:
 115     return GLUT_KEY_SHIFT_R;
 116   case KEYCODE_LEFT_CTRL:
 117     return GLUT_KEY_CTRL_L;
 118   case KEYCODE_RIGHT_CTRL:
 119     return GLUT_KEY_CTRL_R;
 120   }
 121   return 0;
 122 }
 123
 124 unsigned char key_ascii(int qnxKeycode)
 125 {
 126   if (qnxKeycode >= KEYCODE_PC_KEYS && qnxKeycode <= UNICODE_PRIVATE_USE_AREA_LAST) {
 127         switch (qnxKeycode) {
 128         case KEYCODE_BACKSPACE:
 129           return 0x0008;
 130         case KEYCODE_TAB:
 131           return 0x0009;
 132         case KEYCODE_KP_ENTER:
 133         case KEYCODE_RETURN:
 134           return 0x000A;
 135         case KEYCODE_ESCAPE:
 136           return 0x001B;
 137         }
 138   }
 139   return qnxKeycode;
 140 }
 141
 142 //From fg_main_x11
 143 fg_time_t fgPlatformSystemTime ( void )
 144 {
 145 #ifdef CLOCK_MONOTONIC
 146     struct timespec now;
 147     clock_gettime(CLOCK_MONOTONIC, &now);
 148     return now.tv_nsec/1000000 + now.tv_sec*1000;
 149 #elif defined(HAVE_GETTIMEOFDAY)
 150     struct timeval now;
 151     gettimeofday( &now, NULL );
 152     return now.tv_usec/1000 + now.tv_sec*1000;
 153 #endif
 154 }
 155
 156 /*
 157  * Does the magic required to relinquish the CPU until something interesting
 158  * happens.
 159  */
 160 void fgPlatformSleepForEvents( uint64_t msec )
 161 {
 162   //XXX: Is this right? Is there a more direct way to access the context?
 163   if(bps_get_event(&fgStructure.CurrentWindow->Window.pContext.event, (int)msec) != BPS_SUCCESS) {
 164     LOGW("BPS couldn't get event");
 165   }
 166 }
 167
 168 void handle_left_mouse(int x, int y, int height, int eventType, SFG_Window* window)
 169 {
 170         bool handled = false;
 171         /* Virtual arrows PAD */
 172         /* Don't interfere with existing mouse move event */
 173         if (!touchscreen.in_mmotion) {
 174           struct vpad_state prev_vpad = touchscreen.vpad;
 175           touchscreen.vpad.left = touchscreen.vpad.right = touchscreen.vpad.up = touchscreen.vpad.down = false;
 176
 177           if (eventType == SCREEN_EVENT_MTOUCH_TOUCH || eventType == SCREEN_EVENT_MTOUCH_MOVE) {
 178                 if ((x > 0 && x < 100) && (y > (height - 100) && y < height))
 179                 {
 180                   touchscreen.vpad.left = true;
 181                 }
 182                 if ((x > 200 && x < 300) && (y > (height - 100) && y < height))
 183                 {
 184                   touchscreen.vpad.right = true;
 185                 }
 186                 if ((x > 100 && x < 200) && (y > (height - 100) && y < height))
 187                 {
 188                   touchscreen.vpad.down = true;
 189                 }
 190                 if ((x > 100 && x < 200) && (y > (height - 200) && y < (height - 100)))
 191                 {
 192                   touchscreen.vpad.up = true;
 193                 }
 194           }
 195
 196           if (eventType == SCREEN_EVENT_MTOUCH_TOUCH &&
 197                           (touchscreen.vpad.left || touchscreen.vpad.right || touchscreen.vpad.down || touchscreen.vpad.up)) {
 198                 touchscreen.vpad.on = true;
 199           }
 200           if (eventType == SCREEN_EVENT_MTOUCH_RELEASE) {
 201                 touchscreen.vpad.on = false;
 202           }
 203
 204           if (prev_vpad.left != touchscreen.vpad.left
 205                   || prev_vpad.right != touchscreen.vpad.right
 206                   || prev_vpad.up != touchscreen.vpad.up
 207                   || prev_vpad.down != touchscreen.vpad.down
 208                   || prev_vpad.on != touchscreen.vpad.on) {
 209                 if (FETCH_WCB(*window, Special)) {
 210                   if (prev_vpad.left == false && touchscreen.vpad.left == true) {
 211                         INVOKE_WCB(*window, Special, (GLUT_KEY_LEFT, x, y));
 212                   }
 213                   else if (prev_vpad.right == false && touchscreen.vpad.right == true) {
 214                         INVOKE_WCB(*window, Special, (GLUT_KEY_RIGHT, x, y));
 215                   }
 216                   else if (prev_vpad.up == false && touchscreen.vpad.up == true) {
 217                         INVOKE_WCB(*window, Special, (GLUT_KEY_UP, x, y));
 218                   }
 219                   else if (prev_vpad.down == false && touchscreen.vpad.down == true) {
 220                         INVOKE_WCB(*window, Special, (GLUT_KEY_DOWN, x, y));
 221                   }
 222                 }
 223                 if (FETCH_WCB(*window, SpecialUp)) {
 224                   if (prev_vpad.left == true && touchscreen.vpad.left == false) {
 225                         INVOKE_WCB(*window, SpecialUp, (GLUT_KEY_LEFT, x, y));
 226                   }
 227                   if (prev_vpad.right == true && touchscreen.vpad.right == false) {
 228                         INVOKE_WCB(*window, SpecialUp, (GLUT_KEY_RIGHT, x, y));
 229                   }
 230                   if (prev_vpad.up == true && touchscreen.vpad.up == false) {
 231                         INVOKE_WCB(*window, SpecialUp, (GLUT_KEY_UP, x, y));
 232                   }
 233                   if (prev_vpad.down == true && touchscreen.vpad.down == false) {
 234                         INVOKE_WCB(*window, SpecialUp, (GLUT_KEY_DOWN, x, y));
 235                   }
 236                 }
 237                 handled = true;
 238           }
 239         }
 240
 241         /* Normal mouse events */
 242         if (!handled && !touchscreen.vpad.on) {
 243           window->State.MouseX = x;
 244           window->State.MouseY = y;
 245
 246           if(eventType == SCREEN_EVENT_MTOUCH_MOVE) {
 247                 INVOKE_WCB(*window, Motion, (x, y));
 248           } else if(FETCH_WCB(*window, Mouse)) {
 249                 touchscreen.in_mmotion = eventType == SCREEN_EVENT_MTOUCH_TOUCH;
 250                 int glutTouchType = eventType == SCREEN_EVENT_MTOUCH_TOUCH ? GLUT_DOWN : GLUT_UP;
 251                 INVOKE_WCB(*window, Mouse, (GLUT_LEFT_BUTTON, glutTouchType, x, y));
 252           }
 253         }
 254 }
 255
 256 void fgPlatformProcessSingleEvent ( void )
 257 {
 258   int domain;
 259   bps_event_t** eventPtr = &fgStructure.CurrentWindow->Window.pContext.event; //XXX Is there a more direct way to access the context?
 260   bps_event_t* event;
 261   do
 262   {
 263         if(*eventPtr != NULL) {
 264           SFG_Window* window = fgStructure.CurrentWindow;
 265           if (window != NULL && window->Window.Handle != NULL) {
 266                 int size[2];
 267                 screen_get_window_property_iv(window->Window.Handle, SCREEN_PROPERTY_BUFFER_SIZE, size);
 268             fghOnReshapeNotify(window,size[0],size[1],GL_FALSE);
 269           }
 270
 271           event = *eventPtr;
 272           domain = bps_event_get_domain(event);
 273           if (domain == screen_get_domain()) {
 274                 int eventType;
 275                 screen_event_t screenEvent = screen_event_get_event(event);
 276                 screen_get_event_property_iv(screenEvent, SCREEN_PROPERTY_TYPE, &eventType);
 277                 switch (eventType) {
 278
 279                 //Mostly from fg_main_android
 280                 case SCREEN_EVENT_MTOUCH_TOUCH:
 281                 case SCREEN_EVENT_MTOUCH_RELEASE:
 282                 case SCREEN_EVENT_MTOUCH_MOVE:
 283                 {
 284                   mtouch_event_t touchEvent;
 285                   screen_get_mtouch_event(screenEvent, &touchEvent, 0);
 286                   if(touchEvent.contact_id == 0) {
 287                         int size[2];
 288                         screen_get_window_property_iv(window->Window.Handle, SCREEN_PROPERTY_BUFFER_SIZE, size);
 289                         handle_left_mouse(touchEvent.x, touchEvent.y, size[1], eventType, window);
 290                   }
 291
 292                   //Now handle mutlitouch (adapted from fg_main_windows)
 293                   if (eventType == SCREEN_EVENT_MTOUCH_TOUCH) {
 294                         INVOKE_WCB( *window, MultiEntry,  ( touchEvent.contact_id, GLUT_ENTERED ) );
 295                         INVOKE_WCB( *window, MultiButton, ( touchEvent.contact_id, touchEvent.x, touchEvent.y, 0, GLUT_DOWN ) );
 296                   } else if (eventType == SCREEN_EVENT_MTOUCH_MOVE) {
 297                         INVOKE_WCB( *window, MultiMotion, ( touchEvent.contact_id, touchEvent.x, touchEvent.y ) );
 298                         //XXX No motion is performed without contact, thus MultiPassive is never used
 299                   } else if (eventType == SCREEN_EVENT_MTOUCH_RELEASE) {
 300                         INVOKE_WCB( *window, MultiButton, ( touchEvent.contact_id, touchEvent.x, touchEvent.y, 0, GLUT_UP ) );
 301                         INVOKE_WCB( *window, MultiEntry,  ( touchEvent.contact_id, GLUT_LEFT ) );
 302                   }
 303                   break;
 304                 }
 305
 306                 case SCREEN_EVENT_POINTER:
 307                 {
 308                   //Based off/part taken from GamePlay3d PlatformBlackBerry
 309                   static int mouse_pressed = 0;
 310                   int buttons;
 311                   int position[2];
 312                   int wheel;
 313                   // A move event will be fired unless a button state changed.
 314                   bool move = true;
 315                   bool left_move = false;
 316                   // This is a mouse move event, it is applicable to a device with a usb mouse or simulator.
 317                   screen_get_event_property_iv(screenEvent, SCREEN_PROPERTY_BUTTONS, &buttons);
 318                   screen_get_event_property_iv(screenEvent, SCREEN_PROPERTY_SOURCE_POSITION, position);
 319                   screen_get_event_property_iv(screenEvent, SCREEN_PROPERTY_MOUSE_WHEEL, &wheel);
 320                   int size[2];
 321                   screen_get_window_property_iv(window->Window.Handle, SCREEN_PROPERTY_BUFFER_SIZE, size);
 322
 323                   //XXX Should multitouch be handled?
 324
 325                   // Handle left mouse. Interpret as touch if the left mouse event is not consumed.
 326                   if (buttons & SCREEN_LEFT_MOUSE_BUTTON) {
 327                         if (mouse_pressed & SCREEN_LEFT_MOUSE_BUTTON) {
 328                           left_move = true;
 329                         } else {
 330                           move = false;
 331                           mouse_pressed |= SCREEN_LEFT_MOUSE_BUTTON;
 332                           handle_left_mouse(position[0], position[1], size[1], SCREEN_EVENT_MTOUCH_TOUCH, window);
 333                         }
 334                   } else if (mouse_pressed & SCREEN_LEFT_MOUSE_BUTTON) {
 335                         move = false;
 336                         mouse_pressed &= ~SCREEN_LEFT_MOUSE_BUTTON;
 337                         handle_left_mouse(position[0], position[1], size[1], SCREEN_EVENT_MTOUCH_RELEASE, window);
 338                   }
 339
 340                   // Handle right mouse.
 341                   if (buttons & SCREEN_RIGHT_MOUSE_BUTTON) {
 342                         if ((mouse_pressed & SCREEN_RIGHT_MOUSE_BUTTON) == 0) {
 343                           move = false;
 344                           mouse_pressed |= SCREEN_RIGHT_MOUSE_BUTTON;
 345                           INVOKE_WCB(*window, Mouse, (GLUT_RIGHT_BUTTON, GLUT_DOWN, position[0], position[1]));
 346                         }
 347                   } else if (mouse_pressed & SCREEN_RIGHT_MOUSE_BUTTON) {
 348                         move = false;
 349                         mouse_pressed &= ~SCREEN_RIGHT_MOUSE_BUTTON;
 350                         INVOKE_WCB(*window, Mouse, (GLUT_RIGHT_BUTTON, GLUT_UP, position[0], position[1]));
 351                   }
 352
 353                   // Handle middle mouse.
 354                   if (buttons & SCREEN_MIDDLE_MOUSE_BUTTON) {
 355                         if ((mouse_pressed & SCREEN_MIDDLE_MOUSE_BUTTON) == 0) {
 356                           move = false;
 357                           mouse_pressed |= SCREEN_MIDDLE_MOUSE_BUTTON;
 358                           INVOKE_WCB(*window, Mouse, (GLUT_MIDDLE_BUTTON, GLUT_DOWN, position[0], position[1]));
 359                         }
 360                   } else if (mouse_pressed & SCREEN_MIDDLE_MOUSE_BUTTON) {
 361                         move = false;
 362                         mouse_pressed &= ~SCREEN_MIDDLE_MOUSE_BUTTON;
 363                         INVOKE_WCB(*window, Mouse, (GLUT_MIDDLE_BUTTON, GLUT_UP, position[0], position[1]));
 364                   }
 365
 366                   // Fire a move event if none of the buttons changed.
 367                   if (left_move || move) {
 368                         handle_left_mouse(position[0], position[1], size[1], SCREEN_EVENT_MTOUCH_MOVE, window);
 369                   }
 370
 371                   if (wheel) {
 372                         fgState.MouseWheelTicks -= wheel;
 373                         //TODO: Implement wheel support (based on fg_main_mswin... though it seems excessive)
 374                   }
 375                   break;
 376                 }
 377
 378                 //Based off fg_main_android
 379                 case SCREEN_EVENT_KEYBOARD:
 380                 {
 381                   int flags;
 382                   int value;
 383                   screen_get_event_property_iv(screenEvent, SCREEN_PROPERTY_KEY_FLAGS, &flags);
 384                   screen_get_event_property_iv(screenEvent, SCREEN_PROPERTY_KEY_SYM, &value);
 385                   LOGI("fgPlatformProcessSingleEvent: SCREEN_EVENT_KEYBOARD. Flags: 0x%X, Sym: 0x%X", SLOG2_FA_SIGNED(flags), SLOG2_FA_SIGNED(value), SLOG2_FA_END);
 386                   // Suppress key repeats if desired
 387                   if (!fgStructure.CurrentWindow->State.IgnoreKeyRepeat && (flags & KEY_REPEAT) == 0) {
 388                         unsigned int keypress = 0;
 389                         unsigned char ascii = 0;
 390                         if ((keypress = key_special(value))) {
 391                           if(flags & KEY_DOWN) {
 392                                 INVOKE_WCB(*window, Special, (keypress, window->State.MouseX, window->State.MouseY));
 393                           } else {
 394                                 INVOKE_WCB(*window, SpecialUp, (keypress, window->State.MouseX, window->State.MouseY));
 395                           }
 396                         } else if((flags & KEY_SYM_VALID) && (ascii = key_ascii(value))) {
 397                           if(flags & KEY_DOWN) {
 398                                 INVOKE_WCB(*window, Keyboard, (ascii, window->State.MouseX, window->State.MouseY));
 399                           } else {
 400                                 INVOKE_WCB(*window, KeyboardUp, (ascii, window->State.MouseX, window->State.MouseY));
 401                           }
 402                         }
 403                   }
 404                   break;
 405                 }
 406                 }
 407           } else if (domain == navigator_get_domain()) {
 408                 switch (bps_event_get_code(event)) {
 409
 410                 case NAVIGATOR_WINDOW_STATE:
 411                 {
 412                   LOGI("fgPlatformProcessSingleEvent: NAVIGATOR_WINDOW_STATE", SLOG2_FA_END);
 413                   navigator_window_state_t state = navigator_event_get_window_state(event);
 414                   switch (state)
 415                   {
 416                   case NAVIGATOR_WINDOW_FULLSCREEN:
 417                         LOGI("fgPlatformProcessSingleEvent: NAVIGATOR_WINDOW_STATE-NAVIGATOR_WINDOW_FULLSCREEN", SLOG2_FA_END);
 418                         INVOKE_WCB(*window, AppStatus, (GLUT_APPSTATUS_RESUME));
 419                         break;
 420                   case NAVIGATOR_WINDOW_THUMBNAIL:
 421                   case NAVIGATOR_WINDOW_INVISIBLE:
 422                         LOGI("fgPlatformProcessSingleEvent: NAVIGATOR_WINDOW_STATE-NAVIGATOR_WINDOW_THUMBNAIL/NAVIGATOR_WINDOW_INVISIBLE", SLOG2_FA_END);
 423                         INVOKE_WCB(*window, AppStatus, (GLUT_APPSTATUS_PAUSE));
 424                         break;
 425                   }
 426                   break;
 427                 }
 428
 429                 case NAVIGATOR_EXIT:
 430                   LOGI("fgPlatformProcessSingleEvent: NAVIGATOR_EXIT", SLOG2_FA_END);
 431                   /* User closed the application for good, let's kill the window */
 432                   {
 433                         SFG_Window* window = fgStructure.CurrentWindow;
 434                         if (window != NULL) {
 435                           fgDestroyWindow(window);
 436                         } else {
 437                           LOGI("NAVIGATOR_EXIT: No current window", SLOG2_FA_END);
 438                         }
 439                   }
 440                   break;
 441                 }
 442           }
 443         }
 444   } while(bps_get_event(eventPtr, 1) == BPS_SUCCESS && *eventPtr != NULL);
 445
 446   /* Reset event to reduce chances of triggering something */
 447   *eventPtr = NULL;
 448 }
 449
 450 void fgPlatformMainLoopPreliminaryWork ( void )
 451 {
 452   LOGI("fgPlatformMainLoopPreliminaryWork\n", SLOG2_FA_END);
 453 }
 454
 455
 456 /* deal with work list items */
 457 void fgPlatformInitWork(SFG_Window* window)
 458 {
 459     /* notify windowStatus/visibility */
 460     INVOKE_WCB( *window, WindowStatus, ( GLUT_FULLY_RETAINED ) );
 461
 462     /* Position callback, always at 0,0 */
 463     fghOnPositionNotify(window, 0, 0, GL_TRUE);
 464
 465     /* Size gets notified on window creation with size detection in mainloop above
 466      * XXX CHECK: does this messages happen too early like on windows,
 467      * so client code cannot have registered a callback yet and the message
 468      * is thus never received by client?
 469      */
 470 }
 471
 472 void fgPlatformPosResZordWork(SFG_Window* window, unsigned int workMask)
 473 {
 474     if (workMask & GLUT_FULL_SCREEN_WORK)
 475         fgPlatformFullScreenToggle( window );
 476     if (workMask & GLUT_POSITION_WORK)
 477         fgPlatformPositionWindow( window, window->State.DesiredXpos, window->State.DesiredYpos );
 478     if (workMask & GLUT_SIZE_WORK)
 479         fgPlatformReshapeWindow ( window, window->State.DesiredWidth, window->State.DesiredHeight );
 480     if (workMask & GLUT_ZORDER_WORK)
 481     {
 482         if (window->State.DesiredZOrder < 0)
 483             fgPlatformPushWindow( window );
 484         else
 485             fgPlatformPopWindow( window );
 486     }
 487 }
 488
 489 void fgPlatformVisibilityWork(SFG_Window* window)
 490 {
 491     /* Visibility status of window should get updated in the window message handlers
 492      * For now, none of these functions called below do anything, so don't worry
 493      * about it
 494      */
 495     SFG_Window *win = window;
 496     switch (window->State.DesiredVisibility)
 497     {
 498     case DesireHiddenState:
 499         fgPlatformHideWindow( window );
 500         break;
 501     case DesireIconicState:
 502         /* Call on top-level window */
 503         while (win->Parent)
 504             win = win->Parent;
 505         fgPlatformIconifyWindow( win );
 506         break;
 507     case DesireNormalState:
 508         fgPlatformShowWindow( window );
 509         break;
 510     }
 511 }
 512