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(X)   *X = 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         // TODO: Detect and handle possible errors
 165
 166         // Return success
 167         return ret;
 168 }
 169
 170 void AxWin3_DestroyWindow(tHWND Window)
 171 {
 172         tAxWin_IPCMessage       *msg;
 173
 174         msg = AxWin3_int_AllocateIPCMessage(Window, IPCMSG_DESTROYWIN, 0, 0);
 175         AxWin3_int_SendIPCMessage(msg);
 176         free(msg);
 177 }
 178
 179 void *AxWin3_int_GetDataPtr(tHWND Window)
 180 {
 181         return Window->Data;
 182 }
 183
 184 void AxWin3_int_HandleMessage(tAxWin_IPCMessage *Msg)
 185 {
 186         tWindow *dest;
 187
 188         dest = AxWin3_int_GetWindowFromID(Msg->Window);
 189
 190         switch(Msg->ID)
 191         {
 192         case IPCMSG_SENDMSG: {
 193                 tIPCMsg_SendMsg *info = (void*)Msg->Data;
 194                 if(Msg->Size < sizeof(*info) || Msg->Size < sizeof(*info) + info->Length) {
 195                         _SysDebug("Message is undersized (%i < %i + %i)",
 196                                 Msg->Size < sizeof(*info), info->Length);
 197                         return ;
 198                 }
 199                 if(!dest || !dest->Handler) {
 200                         _SysDebug("No handler for destination %p", dest);
 201                         return ;
 202                 }
 203                 _SysDebug("IPC Message 0x%x - %i bytes", info->ID, info->Length);
 204
 205                 if( dest->Handler(dest, info->ID, info->Length, info->Data) )
 206                         ;
 207                 else {
 208                         switch( info->ID )
 209                         {
 210                         case WNDMSG_HOTKEY: {
 211                                 const struct sWndMsg_Hotkey *mi = (void*)info->Data;
 212                                 if( mi->ID >= MAX_HOTKEYS )
 213                                         ;       // TODO: Error when hotkey is out of range
 214                                 else if( gAxWin3_Hotkeys[mi->ID] == 0 )
 215                                         _SysDebug("--- Unmapped hotkey ID %i fired", mi->ID);
 216                                 else
 217                                         gAxWin3_Hotkeys[mi->ID]();
 218                                 }break;
 219                         default:
 220                                 _SysDebug("--- Unhandled SENDMSG %i", info->ID);
 221                                 break;
 222                         }
 223                 }
 224                 break; }
 225         default:
 226                 _SysDebug("Unknow message ID %i", Msg->ID);
 227                 break;
 228         }
 229
 230         free(Msg);
 231 }
 232
 233 void AxWin3_SetWindowTitle(tHWND Window, const char *Title)
 234 {
 235         tAxWin_IPCMessage       *msg;
 236          int    len = strlen(Title);
 237
 238         msg = AxWin3_int_AllocateIPCMessage(Window, IPCMSG_SETWINTITLE, 0, len+1);
 239         strcpy(msg->Data, Title);
 240
 241         AxWin3_int_SendIPCMessage(msg);
 242
 243         free(msg);
 244 }
 245
 246 void AxWin3_SendMessage(tHWND Window, tHWND Destination, int Message, int Length, void *Data)
 247 {
 248         tAxWin_IPCMessage       *msg;
 249         tIPCMsg_SendMsg *info;
 250
 251         msg = AxWin3_int_AllocateIPCMessage(Window, IPCMSG_SENDMSG, 0, sizeof(*info)+Length);
 252         info = (void*)msg->Data;
 253         info->Remote = AxWin3_int_GetWindowID(Destination);
 254         info->ID = Message;
 255         info->Length = Length;
 256         memcpy(info->Data, Data, Length);
 257
 258         AxWin3_int_SendIPCMessage(msg);
 259         free(msg);
 260 }
 261
 262 void *AxWin3_WaitMessage(tHWND Window, int MessageID, size_t *Length)
 263 {
 264         tAxWin_IPCMessage       *msg;
 265
 266         for( ;; )
 267         {
 268                 msg = AxWin3_int_WaitIPCMessage(IPCMSG_SENDMSG);
 269                 if( msg->Window != AxWin3_int_GetWindowID(Window) ) {
 270                         AxWin3_int_HandleMessage(msg);
 271                         continue ;
 272                 }
 273                 tIPCMsg_SendMsg *info = (void*)msg->Data;
 274                 if( info->ID != MessageID ) {
 275                         AxWin3_int_HandleMessage(msg);
 276                         continue ;
 277                 }
 278
 279                 *Length = info->Length;
 280                 void    *ret = malloc(info->Length);
 281                 memcpy(ret, info->Data, info->Length);
 282                 free(msg);
 283
 284                 return ret;
 285         }
 286 }
 287
 288 void AxWin3_FocusWindow(tHWND Window)
 289 {
 290         tAxWin_IPCMessage       *msg;
 291
 292         msg = AxWin3_int_AllocateIPCMessage(Window, IPCMSG_FOCUSWINDOW, 0, 0);
 293
 294         AxWin3_int_SendIPCMessage(msg);
 295         free(msg);
 296 }
 297
 298 void AxWin3_ShowWindow(tHWND Window, int bShow)
 299 {
 300         tAxWin_IPCMessage       *msg;
 301         tIPCMsg_Boolean *info;
 302
 303         msg = AxWin3_int_AllocateIPCMessage(Window, IPCMSG_SHOWWINDOW, 0, sizeof(*info));
 304         info = (void*)msg->Data;
 305         info->Value = !!bShow;
 306
 307         AxWin3_int_SendIPCMessage(msg);
 308
 309         free(msg);
 310 }
 311
 312 void AxWin3_DecorateWindow(tHWND Window, int bDecorate)
 313 {
 314         tAxWin_IPCMessage       *msg;
 315         tIPCMsg_Boolean *info;
 316
 317         msg = AxWin3_int_AllocateIPCMessage(Window, IPCMSG_DECORATEWINDOW, 0, sizeof(*info));
 318         info = (void*)msg->Data;
 319         info->Value = !!bDecorate;
 320
 321         AxWin3_int_SendIPCMessage(msg);
 322
 323         free(msg);
 324 }
 325
 326 void AxWin3_SetWindowPos(tHWND Window, short X, short Y, short W, short H)
 327 {
 328         tAxWin_IPCMessage       *msg;
 329         tIPCMsg_SetWindowPos    *info;
 330
 331         msg = AxWin3_int_AllocateIPCMessage(Window, IPCMSG_SETWINPOS, 0, sizeof(*info));
 332         info = (void*)msg->Data;
 333
 334         info->bSetPos = 1;
 335         info->bSetDims = 1;
 336         info->X = X;    info->Y = Y;
 337         info->W = W;    info->H = H;
 338
 339         AxWin3_int_SendIPCMessage(msg);
 340         free(msg);
 341 }
 342
 343 void AxWin3_MoveWindow(tHWND Window, short X, short Y)
 344 {
 345         tAxWin_IPCMessage       *msg;
 346         tIPCMsg_SetWindowPos    *info;
 347
 348         msg = AxWin3_int_AllocateIPCMessage(Window, IPCMSG_SETWINPOS, 0, sizeof(*info));
 349         info = (void*)msg->Data;
 350
 351         info->bSetPos = 1;
 352         info->bSetDims = 0;
 353         info->X = X;
 354         info->Y = Y;
 355
 356         AxWin3_int_SendIPCMessage(msg);
 357
 358         free(msg);
 359 }
 360
 361 void AxWin3_ResizeWindow(tHWND Window, short W, short H)
 362 {
 363         tAxWin_IPCMessage       *msg;
 364         tIPCMsg_SetWindowPos    *info;
 365
 366         msg = AxWin3_int_AllocateIPCMessage(Window, IPCMSG_SETWINPOS, 0, sizeof(*info));
 367         info = (void*)msg->Data;
 368
 369         info->bSetPos = 0;
 370         info->bSetDims = 1;
 371         info->W = W;
 372         info->H = H;
 373
 374         AxWin3_int_SendIPCMessage(msg);
 375
 376         free(msg);
 377 }
 378
 379 int AxWin3_RegisterAction(tHWND Window, const char *Action, tAxWin3_HotkeyCallback cb)
 380 {
 381          int    i;
 382         for( i = 0; i < MAX_HOTKEYS; i ++ )
 383         {
 384                 if( gAxWin3_Hotkeys[i] == NULL )
 385                 {
 386                         tAxWin_IPCMessage       *msg;
 387                         struct sIPCMsg_RegAction        *info;
 388                         gAxWin3_Hotkeys[i] = cb;
 389
 390                         msg = AxWin3_int_AllocateIPCMessage(Window, IPCMSG_REGACTION, 0, sizeof(*info)+strlen(Action)+1);
 391                         info = (void*)msg->Data;
 392
 393                         info->Index = i;
 394                         strcpy(info->Action, Action);
 395
 396                         AxWin3_int_SendIPCMessage(msg);
 397                         free(msg);
 398                         return i;
 399                 }
 400         }
 401         return -1;
 402 }
 403