Usermode/Applications/axwin3_src/libaxwin3.so_src/wm.c

   1 /*
   2  * AxWin3 Interface Library
   3  * - By John Hodge (thePowersGang)
   4  *
   5  * wm.c
   6  * - Core window management functions
   7  */
   8 #include <axwin3/axwin.h>
   9 #include <stdlib.h>
  10 #include <string.h>
  11 #include "include/internal.h"
  12 #include "include/ipc.h"
  13 #include <wm_messages.h>
  14
  15 #define WINDOWS_PER_ALLOC       (64-1)  // -1 to make it 64 pointers (+ Next)
  16 #define MAX_HOTKEYS     32
  17
  18 typedef struct sWindowBlock     tWindowBlock;
  19
  20 typedef struct sAxWin3_Window   tWindow;
  21
  22 // === STRUCTURES ===
  23 struct sWindowBlock
  24 {
  25         tWindowBlock    *Next;
  26         tWindow *Windows[WINDOWS_PER_ALLOC];
  27 };
  28
  29 // === GLOBALS ===
  30  int    giAxWin3_LowestFreeWinID;
  31  int    giAxWin3_HighestUsedWinID;
  32 tWindowBlock    gAxWin3_WindowList;
  33 tAxWin3_HotkeyCallback  gAxWin3_Hotkeys[MAX_HOTKEYS];
  34
  35 // === CODE ===
  36 tWindow *AxWin3_int_CreateWindowStruct(uint32_t ServerID, int ExtraBytes)
  37 {
  38         tWindow *ret;
  39
  40         ret = calloc(sizeof(tWindow) + ExtraBytes, 1);
  41         ret->ServerID = ServerID;
  42
  43         return ret;
  44 }
  45
  46 tWindow *AxWin3_int_GetWindowFromID(uint32_t ServerID)
  47 {
  48         tWindowBlock    *block = &gAxWin3_WindowList;
  49         while(block && ServerID > WINDOWS_PER_ALLOC) {
  50                 block = block->Next;
  51                 ServerID -= WINDOWS_PER_ALLOC;
  52         }
  53         if(!block)      return NULL;
  54         return block->Windows[ServerID];
  55 }
  56
  57 tWindow *AxWin3_int_AllocateWindowInfo(int DataBytes, int *WinID)
  58 {
  59          int    idx, newWinID;
  60         tWindowBlock *block, *prev = NULL;
  61         tWindow *ret;
  62
  63         block = &gAxWin3_WindowList;
  64         newWinID = giAxWin3_LowestFreeWinID;
  65         for( idx = 0; block; newWinID ++ )
  66         {
  67                 if( block->Windows[idx] == NULL )
  68                         break;
  69                 idx ++;
  70                 if(idx == WINDOWS_PER_ALLOC) {
  71                         prev = block;
  72                         block = block->Next;
  73                         idx = 0;
  74                 }
  75         }
  76
  77         if( !block )
  78         {
  79                 block = calloc(sizeof(tWindowBlock), 1);
  80                 prev->Next = block;
  81                 idx = 0;
  82         }
  83
  84         ret = block->Windows[idx] = AxWin3_int_CreateWindowStruct(newWinID, DataBytes);
  85         if(newWinID > giAxWin3_HighestUsedWinID)
  86                 giAxWin3_HighestUsedWinID = newWinID;
  87         if(newWinID == giAxWin3_LowestFreeWinID)
  88                 giAxWin3_HighestUsedWinID ++;
  89
  90         if(WinID)       *WinID = newWinID;
  91
  92         return ret;
  93 }
  94
  95 int AxWin3_GetDisplayCount(void)
  96 {
  97         tAxWin_IPCMessage       *msg;
  98         tIPCMsg_ReturnInt       *ret;
  99          int    rv;
 100
 101         msg = AxWin3_int_AllocateIPCMessage(NULL, IPCMSG_GETDISPLAYCOUNT, IPCMSG_FLAG_RETURN, 0);
 102         AxWin3_int_SendIPCMessage(msg);
 103         free(msg);
 104
 105         msg = AxWin3_int_WaitIPCMessage(IPCMSG_GETDISPLAYCOUNT);
 106         if(msg->Size < sizeof(*ret))    return -1;
 107         ret = (void*)msg->Data;
 108         rv = ret->Value;
 109         free(msg);
 110         return rv;
 111 }
 112
 113 int AxWin3_GetDisplayDims(int Display, int *X, int *Y, int *Width, int *Height)
 114 {
 115         tAxWin_IPCMessage       *msg;
 116         tIPCMsg_GetDisplayDims  *req;
 117         tIPCMsg_RetDisplayDims  *ret;
 118
 119         msg = AxWin3_int_AllocateIPCMessage(NULL, IPCMSG_GETDISPLAYDIMS, IPCMSG_FLAG_RETURN, sizeof(*req));
 120         req = (void*)msg->Data;
 121         req->DisplayID = Display;
 122         AxWin3_int_SendIPCMessage(msg);
 123         free(msg);
 124
 125         msg = AxWin3_int_WaitIPCMessage(IPCMSG_GETDISPLAYDIMS);
 126         if(msg->Size < sizeof(*ret))    return -1;
 127         ret = (void*)msg->Data;
 128
 129         if(X)   *X = ret->X;
 130         if(Y)   *Y = ret->Y;
 131         if(Width)       *Width = ret->W;
 132         if(Height)      *Height = ret->H;
 133
 134         return 0;
 135 }
 136
 137 tHWND AxWin3_CreateWindow(
 138         tHWND Parent, const char *Renderer, int RendererArg,
 139         int DataBytes, tAxWin3_WindowMessageHandler MessageHandler
 140         )
 141 {
 142         tWindow *ret;
 143          int    newWinID;
 144          int    dataSize = sizeof(tIPCMsg_CreateWin) + strlen(Renderer) + 1;
 145         tAxWin_IPCMessage       *msg;
 146         tIPCMsg_CreateWin       *create_win;
 147
 148         // Allocate a window ID
 149         ret = AxWin3_int_AllocateWindowInfo(DataBytes, &newWinID);
 150         if(!ret)        return NULL;
 151         ret->Handler = MessageHandler;
 152
 153         // Create message
 154         msg = AxWin3_int_AllocateIPCMessage(Parent, IPCMSG_CREATEWIN, 0, dataSize);
 155         create_win = (void*)msg->Data;
 156         create_win->NewWinID = newWinID;
 157         create_win->RendererArg = RendererArg;
 158         strcpy(create_win->Renderer, Renderer);
 159
 160         // Send and clean up
 161         AxWin3_int_SendIPCMessage(msg);
 162         free(msg);
 163
 164         _SysDebug("AxWin3_CreateWindow: %i :: '%s'", newWinID, Renderer);
 165
 166         // TODO: Detect and handle possible errors
 167
 168         // Return success
 169         return ret;
 170 }
 171
 172 void AxWin3_DestroyWindow(tHWND Window)
 173 {
 174         tAxWin_IPCMessage       *msg;
 175
 176         msg = AxWin3_int_AllocateIPCMessage(Window, IPCMSG_DESTROYWIN, 0, 0);
 177         AxWin3_int_SendIPCMessage(msg);
 178         free(msg);
 179
 180         free(ret);
 181 }
 182
 183 void *AxWin3_int_GetDataPtr(tHWND Window)
 184 {
 185         return Window->Data;
 186 }
 187
 188 void AxWin3_int_HandleMessage(tAxWin_IPCMessage *Msg)
 189 {
 190         tWindow *dest;
 191
 192         dest = AxWin3_int_GetWindowFromID(Msg->Window);
 193
 194         switch(Msg->ID)
 195         {
 196         case IPCMSG_SENDMSG: {
 197                 tIPCMsg_SendMsg *info = (void*)Msg->Data;
 198                 if(Msg->Size < sizeof(*info) || Msg->Size < sizeof(*info) + info->Length) {
 199                         _SysDebug("Message is undersized (%i < %i + %i)",
 200                                 Msg->Size < sizeof(*info), info->Length);
 201                         return ;
 202                 }
 203                 if(!dest || !dest->Handler) {
 204                         _SysDebug("No handler for destination %p", dest);
 205                         return ;
 206                 }
 207                 _SysDebug("IPC Message 0x%x - %i bytes", info->ID, info->Length);
 208
 209                 if( dest->Handler(dest, info->ID, info->Length, info->Data) )
 210                         ;
 211                 else {
 212                         switch( info->ID )
 213                         {
 214                         case WNDMSG_HOTKEY: {
 215                                 const struct sWndMsg_Hotkey *mi = (void*)info->Data;
 216                                 if( mi->ID >= MAX_HOTKEYS )
 217                                         ;       // TODO: Error when hotkey is out of range
 218                                 else if( gAxWin3_Hotkeys[mi->ID] == 0 )
 219                                         _SysDebug("--- Unmapped hotkey ID %i fired", mi->ID);
 220                                 else
 221                                         gAxWin3_Hotkeys[mi->ID]();
 222                                 }break;
 223                         default:
 224                                 _SysDebug("--- Unhandled SENDMSG 0x%x win %i", info->ID, Msg->Window);
 225                                 break;
 226                         }
 227                 }
 228                 break; }
 229         case IPCMSG_DESTROYWIN:
 230                 // Clean up resources associated with this window
 231                 break;
 232         default:
 233                 _SysDebug("Unknow message ID %i", Msg->ID);
 234                 break;
 235         }
 236
 237         free(Msg);
 238 }
 239
 240 void AxWin3_SetWindowTitle(tHWND Window, const char *Title)
 241 {
 242         tAxWin_IPCMessage       *msg;
 243          int    len = strlen(Title);
 244
 245         msg = AxWin3_int_AllocateIPCMessage(Window, IPCMSG_SETWINTITLE, 0, len+1);
 246         strcpy(msg->Data, Title);
 247
 248         AxWin3_int_SendIPCMessage(msg);
 249
 250         free(msg);
 251 }
 252
 253 void AxWin3_SendMessage(tHWND Window, tHWND Destination, int Message, int Length, void *Data)
 254 {
 255         tAxWin_IPCMessage       *msg;
 256         tIPCMsg_SendMsg *info;
 257
 258         msg = AxWin3_int_AllocateIPCMessage(Window, IPCMSG_SENDMSG, 0, sizeof(*info)+Length);
 259         info = (void*)msg->Data;
 260         info->Remote = AxWin3_int_GetWindowID(Destination);
 261         info->ID = Message;
 262         info->Length = Length;
 263         memcpy(info->Data, Data, Length);
 264
 265         AxWin3_int_SendIPCMessage(msg);
 266         free(msg);
 267 }
 268
 269 void *AxWin3_WaitMessage(tHWND Window, int MessageID, size_t *Length)
 270 {
 271         tAxWin_IPCMessage       *msg;
 272
 273         for( ;; )
 274         {
 275                 msg = AxWin3_int_WaitIPCMessage(IPCMSG_SENDMSG);
 276                 if( msg->Window != AxWin3_int_GetWindowID(Window) ) {
 277                         AxWin3_int_HandleMessage(msg);
 278                         continue ;
 279                 }
 280                 tIPCMsg_SendMsg *info = (void*)msg->Data;
 281                 if( info->ID != MessageID ) {
 282                         AxWin3_int_HandleMessage(msg);
 283                         continue ;
 284                 }
 285
 286                 *Length = info->Length;
 287                 void    *ret = malloc(info->Length);
 288                 memcpy(ret, info->Data, info->Length);
 289                 free(msg);
 290
 291                 return ret;
 292         }
 293 }
 294
 295 void AxWin3_SendIPC(tHWND Window, int Message, size_t Length, const void *Data)
 296 {
 297         tAxWin_IPCMessage       *msg;
 298
 299         msg = AxWin3_int_AllocateIPCMessage(Window, Message, IPCMSG_FLAG_RENDERER, Length);
 300         memcpy(msg->Data, Data, Length);
 301         AxWin3_int_SendIPCMessage(msg);
 302         free(msg);
 303 }
 304
 305 void *AxWin3_WaitIPCMessage(tHWND Window, int MessageID, size_t *Length)
 306 {
 307         tAxWin_IPCMessage       *msg;
 308         for( ;; )
 309         {
 310                 msg = AxWin3_int_WaitIPCMessage(MessageID);
 311                 if( !(msg->Flags & IPCMSG_FLAG_RENDERER) || msg->Window != AxWin3_int_GetWindowID(Window) ) {
 312                         AxWin3_int_HandleMessage(msg);
 313                         continue ;
 314                 }
 315
 316                 *Length = msg->Size;
 317                 void    *ret = malloc(msg->Size);
 318                 memcpy(ret, msg->Data, msg->Size);
 319                 free(msg);
 320
 321                 return ret;
 322         }
 323 }
 324
 325 void AxWin3_FocusWindow(tHWND Window)
 326 {
 327         tAxWin_IPCMessage       *msg;
 328
 329         msg = AxWin3_int_AllocateIPCMessage(Window, IPCMSG_FOCUSWINDOW, 0, 0);
 330
 331         AxWin3_int_SendIPCMessage(msg);
 332         free(msg);
 333 }
 334
 335 void AxWin3_ShowWindow(tHWND Window, int bShow)
 336 {
 337         tAxWin_IPCMessage       *msg;
 338         tIPCMsg_Boolean *info;
 339
 340         msg = AxWin3_int_AllocateIPCMessage(Window, IPCMSG_SHOWWINDOW, 0, sizeof(*info));
 341         info = (void*)msg->Data;
 342         info->Value = !!bShow;
 343
 344         AxWin3_int_SendIPCMessage(msg);
 345
 346         free(msg);
 347 }
 348
 349 void AxWin3_DecorateWindow(tHWND Window, int bDecorate)
 350 {
 351         tAxWin_IPCMessage       *msg;
 352         tIPCMsg_Boolean *info;
 353
 354         msg = AxWin3_int_AllocateIPCMessage(Window, IPCMSG_DECORATEWINDOW, 0, sizeof(*info));
 355         info = (void*)msg->Data;
 356         info->Value = !!bDecorate;
 357
 358         AxWin3_int_SendIPCMessage(msg);
 359
 360         free(msg);
 361 }
 362
 363 void AxWin3_SetWindowPos(tHWND Window, short X, short Y, short W, short H)
 364 {
 365         tAxWin_IPCMessage       *msg;
 366         tIPCMsg_SetWindowPos    *info;
 367
 368         msg = AxWin3_int_AllocateIPCMessage(Window, IPCMSG_SETWINPOS, 0, sizeof(*info));
 369         info = (void*)msg->Data;
 370
 371         info->bSetPos = 1;
 372         info->bSetDims = 1;
 373         info->X = X;    info->Y = Y;
 374         info->W = W;    info->H = H;
 375
 376         AxWin3_int_SendIPCMessage(msg);
 377         free(msg);
 378 }
 379
 380 void AxWin3_MoveWindow(tHWND Window, short X, short Y)
 381 {
 382         tAxWin_IPCMessage       *msg;
 383         tIPCMsg_SetWindowPos    *info;
 384
 385         msg = AxWin3_int_AllocateIPCMessage(Window, IPCMSG_SETWINPOS, 0, sizeof(*info));
 386         info = (void*)msg->Data;
 387
 388         info->bSetPos = 1;
 389         info->bSetDims = 0;
 390         info->X = X;
 391         info->Y = Y;
 392
 393         AxWin3_int_SendIPCMessage(msg);
 394
 395         free(msg);
 396 }
 397
 398 void AxWin3_ResizeWindow(tHWND Window, short W, short H)
 399 {
 400         tAxWin_IPCMessage       *msg;
 401         tIPCMsg_SetWindowPos    *info;
 402
 403         msg = AxWin3_int_AllocateIPCMessage(Window, IPCMSG_SETWINPOS, 0, sizeof(*info));
 404         info = (void*)msg->Data;
 405
 406         info->bSetPos = 0;
 407         info->bSetDims = 1;
 408         info->W = W;
 409         info->H = H;
 410
 411         AxWin3_int_SendIPCMessage(msg);
 412
 413         free(msg);
 414 }
 415
 416 int AxWin3_RegisterAction(tHWND Window, const char *Action, tAxWin3_HotkeyCallback cb)
 417 {
 418          int    i;
 419         for( i = 0; i < MAX_HOTKEYS; i ++ )
 420         {
 421                 if( gAxWin3_Hotkeys[i] == NULL )
 422                 {
 423                         tAxWin_IPCMessage       *msg;
 424                         struct sIPCMsg_RegAction        *info;
 425                         gAxWin3_Hotkeys[i] = cb;
 426
 427                         msg = AxWin3_int_AllocateIPCMessage(Window, IPCMSG_REGACTION, 0, sizeof(*info)+strlen(Action)+1);
 428                         info = (void*)msg->Data;
 429
 430                         info->Index = i;
 431                         strcpy(info->Action, Action);
 432
 433                         AxWin3_int_SendIPCMessage(msg);
 434                         free(msg);
 435                         return i;
 436                 }
 437         }
 438         return -1;
 439 }
 440