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
 181 void *AxWin3_int_GetDataPtr(tHWND Window)
 182 {
 183         return Window->Data;
 184 }
 185
 186 void AxWin3_int_HandleMessage(tAxWin_IPCMessage *Msg)
 187 {
 188         tWindow *dest;
 189
 190         dest = AxWin3_int_GetWindowFromID(Msg->Window);
 191
 192         switch(Msg->ID)
 193         {
 194         case IPCMSG_SENDMSG: {
 195                 tIPCMsg_SendMsg *info = (void*)Msg->Data;
 196                 if(Msg->Size < sizeof(*info) || Msg->Size < sizeof(*info) + info->Length) {
 197                         _SysDebug("Message is undersized (%i < %i + %i)",
 198                                 Msg->Size < sizeof(*info), info->Length);
 199                         return ;
 200                 }
 201                 if(!dest || !dest->Handler) {
 202                         _SysDebug("No handler for destination %p", dest);
 203                         return ;
 204                 }
 205                 _SysDebug("IPC Message 0x%x - %i bytes", info->ID, info->Length);
 206
 207                 if( dest->Handler(dest, info->ID, info->Length, info->Data) )
 208                         ;
 209                 else {
 210                         switch( info->ID )
 211                         {
 212                         case WNDMSG_HOTKEY: {
 213                                 const struct sWndMsg_Hotkey *mi = (void*)info->Data;
 214                                 if( mi->ID >= MAX_HOTKEYS )
 215                                         ;       // TODO: Error when hotkey is out of range
 216                                 else if( gAxWin3_Hotkeys[mi->ID] == 0 )
 217                                         _SysDebug("--- Unmapped hotkey ID %i fired", mi->ID);
 218                                 else
 219                                         gAxWin3_Hotkeys[mi->ID]();
 220                                 }break;
 221                         default:
 222                                 _SysDebug("--- Unhandled SENDMSG 0x%x win %i", info->ID, Msg->Window);
 223                                 break;
 224                         }
 225                 }
 226                 break; }
 227         default:
 228                 _SysDebug("Unknow message ID %i", Msg->ID);
 229                 break;
 230         }
 231
 232         free(Msg);
 233 }
 234
 235 void AxWin3_SetWindowTitle(tHWND Window, const char *Title)
 236 {
 237         tAxWin_IPCMessage       *msg;
 238          int    len = strlen(Title);
 239
 240         msg = AxWin3_int_AllocateIPCMessage(Window, IPCMSG_SETWINTITLE, 0, len+1);
 241         strcpy(msg->Data, Title);
 242
 243         AxWin3_int_SendIPCMessage(msg);
 244
 245         free(msg);
 246 }
 247
 248 void AxWin3_SendMessage(tHWND Window, tHWND Destination, int Message, int Length, void *Data)
 249 {
 250         tAxWin_IPCMessage       *msg;
 251         tIPCMsg_SendMsg *info;
 252
 253         msg = AxWin3_int_AllocateIPCMessage(Window, IPCMSG_SENDMSG, 0, sizeof(*info)+Length);
 254         info = (void*)msg->Data;
 255         info->Remote = AxWin3_int_GetWindowID(Destination);
 256         info->ID = Message;
 257         info->Length = Length;
 258         memcpy(info->Data, Data, Length);
 259
 260         AxWin3_int_SendIPCMessage(msg);
 261         free(msg);
 262 }
 263
 264 void *AxWin3_WaitMessage(tHWND Window, int MessageID, size_t *Length)
 265 {
 266         tAxWin_IPCMessage       *msg;
 267
 268         for( ;; )
 269         {
 270                 msg = AxWin3_int_WaitIPCMessage(IPCMSG_SENDMSG);
 271                 if( msg->Window != AxWin3_int_GetWindowID(Window) ) {
 272                         AxWin3_int_HandleMessage(msg);
 273                         continue ;
 274                 }
 275                 tIPCMsg_SendMsg *info = (void*)msg->Data;
 276                 if( info->ID != MessageID ) {
 277                         AxWin3_int_HandleMessage(msg);
 278                         continue ;
 279                 }
 280
 281                 *Length = info->Length;
 282                 void    *ret = malloc(info->Length);
 283                 memcpy(ret, info->Data, info->Length);
 284                 free(msg);
 285
 286                 return ret;
 287         }
 288 }
 289
 290 void AxWin3_SendIPC(tHWND Window, int Message, size_t Length, const void *Data)
 291 {
 292         tAxWin_IPCMessage       *msg;
 293
 294         msg = AxWin3_int_AllocateIPCMessage(Window, Message, IPCMSG_FLAG_RENDERER, Length);
 295         memcpy(msg->Data, Data, Length);
 296         AxWin3_int_SendIPCMessage(msg);
 297         free(msg);
 298 }
 299
 300 void *AxWin3_WaitIPCMessage(tHWND Window, int MessageID, size_t *Length)
 301 {
 302         tAxWin_IPCMessage       *msg;
 303         for( ;; )
 304         {
 305                 msg = AxWin3_int_WaitIPCMessage(MessageID);
 306                 if( !(msg->Flags & IPCMSG_FLAG_RENDERER) || msg->Window != AxWin3_int_GetWindowID(Window) ) {
 307                         AxWin3_int_HandleMessage(msg);
 308                         continue ;
 309                 }
 310
 311                 *Length = msg->Size;
 312                 void    *ret = malloc(msg->Size);
 313                 memcpy(ret, msg->Data, msg->Size);
 314                 free(msg);
 315
 316                 return ret;
 317         }
 318 }
 319
 320 void AxWin3_FocusWindow(tHWND Window)
 321 {
 322         tAxWin_IPCMessage       *msg;
 323
 324         msg = AxWin3_int_AllocateIPCMessage(Window, IPCMSG_FOCUSWINDOW, 0, 0);
 325
 326         AxWin3_int_SendIPCMessage(msg);
 327         free(msg);
 328 }
 329
 330 void AxWin3_ShowWindow(tHWND Window, int bShow)
 331 {
 332         tAxWin_IPCMessage       *msg;
 333         tIPCMsg_Boolean *info;
 334
 335         msg = AxWin3_int_AllocateIPCMessage(Window, IPCMSG_SHOWWINDOW, 0, sizeof(*info));
 336         info = (void*)msg->Data;
 337         info->Value = !!bShow;
 338
 339         AxWin3_int_SendIPCMessage(msg);
 340
 341         free(msg);
 342 }
 343
 344 void AxWin3_DecorateWindow(tHWND Window, int bDecorate)
 345 {
 346         tAxWin_IPCMessage       *msg;
 347         tIPCMsg_Boolean *info;
 348
 349         msg = AxWin3_int_AllocateIPCMessage(Window, IPCMSG_DECORATEWINDOW, 0, sizeof(*info));
 350         info = (void*)msg->Data;
 351         info->Value = !!bDecorate;
 352
 353         AxWin3_int_SendIPCMessage(msg);
 354
 355         free(msg);
 356 }
 357
 358 void AxWin3_SetWindowPos(tHWND Window, short X, short Y, short W, short H)
 359 {
 360         tAxWin_IPCMessage       *msg;
 361         tIPCMsg_SetWindowPos    *info;
 362
 363         msg = AxWin3_int_AllocateIPCMessage(Window, IPCMSG_SETWINPOS, 0, sizeof(*info));
 364         info = (void*)msg->Data;
 365
 366         info->bSetPos = 1;
 367         info->bSetDims = 1;
 368         info->X = X;    info->Y = Y;
 369         info->W = W;    info->H = H;
 370
 371         AxWin3_int_SendIPCMessage(msg);
 372         free(msg);
 373 }
 374
 375 void AxWin3_MoveWindow(tHWND Window, short X, short Y)
 376 {
 377         tAxWin_IPCMessage       *msg;
 378         tIPCMsg_SetWindowPos    *info;
 379
 380         msg = AxWin3_int_AllocateIPCMessage(Window, IPCMSG_SETWINPOS, 0, sizeof(*info));
 381         info = (void*)msg->Data;
 382
 383         info->bSetPos = 1;
 384         info->bSetDims = 0;
 385         info->X = X;
 386         info->Y = Y;
 387
 388         AxWin3_int_SendIPCMessage(msg);
 389
 390         free(msg);
 391 }
 392
 393 void AxWin3_ResizeWindow(tHWND Window, short W, short H)
 394 {
 395         tAxWin_IPCMessage       *msg;
 396         tIPCMsg_SetWindowPos    *info;
 397
 398         msg = AxWin3_int_AllocateIPCMessage(Window, IPCMSG_SETWINPOS, 0, sizeof(*info));
 399         info = (void*)msg->Data;
 400
 401         info->bSetPos = 0;
 402         info->bSetDims = 1;
 403         info->W = W;
 404         info->H = H;
 405
 406         AxWin3_int_SendIPCMessage(msg);
 407
 408         free(msg);
 409 }
 410
 411 int AxWin3_RegisterAction(tHWND Window, const char *Action, tAxWin3_HotkeyCallback cb)
 412 {
 413          int    i;
 414         for( i = 0; i < MAX_HOTKEYS; i ++ )
 415         {
 416                 if( gAxWin3_Hotkeys[i] == NULL )
 417                 {
 418                         tAxWin_IPCMessage       *msg;
 419                         struct sIPCMsg_RegAction        *info;
 420                         gAxWin3_Hotkeys[i] = cb;
 421
 422                         msg = AxWin3_int_AllocateIPCMessage(Window, IPCMSG_REGACTION, 0, sizeof(*info)+strlen(Action)+1);
 423                         info = (void*)msg->Data;
 424
 425                         info->Index = i;
 426                         strcpy(info->Action, Action);
 427
 428                         AxWin3_int_SendIPCMessage(msg);
 429                         free(msg);
 430                         return i;
 431                 }
 432         }
 433         return -1;
 434 }
 435