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
  14 #define WINDOWS_PER_ALLOC       (63)
  15
  16 typedef struct sWindowBlock     tWindowBlock;
  17
  18 typedef struct sAxWin3_Window   tWindow;
  19
  20 // === STRUCTURES ===
  21 struct sWindowBlock
  22 {
  23         tWindowBlock    *Next;
  24         tWindow *Windows[WINDOWS_PER_ALLOC];
  25 };
  26
  27 // === GLOBALS ===
  28  int    giAxWin3_LowestFreeWinID;
  29  int    giAxWin3_HighestUsedWinID;
  30 tWindowBlock    gAxWin3_WindowList;
  31
  32 // === CODE ===
  33 tWindow *AxWin3_int_CreateWindowStruct(uint32_t ServerID, int ExtraBytes)
  34 {
  35         tWindow *ret;
  36
  37         ret = calloc(sizeof(tWindow) + ExtraBytes, 1);
  38         ret->ServerID = ServerID;
  39
  40         return ret;
  41 }
  42
  43 tWindow *AxWin3_int_GetWindowFromID(uint32_t ServerID)
  44 {
  45         tWindowBlock    *block = &gAxWin3_WindowList;
  46         while(block && ServerID > WINDOWS_PER_ALLOC) {
  47                 block = block->Next;
  48                 ServerID -= WINDOWS_PER_ALLOC;
  49         }
  50         if(!block)      return NULL;
  51         return block->Windows[ServerID];
  52 }
  53
  54 tWindow *AxWin3_int_AllocateWindowInfo(int DataBytes, int *WinID)
  55 {
  56          int    idx, newWinID;
  57         tWindowBlock *block, *prev;
  58         tWindow *ret;
  59
  60         block = &gAxWin3_WindowList;
  61         newWinID = giAxWin3_LowestFreeWinID;
  62         for( idx = 0; block; newWinID ++ )
  63         {
  64                 if( block->Windows[idx] == NULL )
  65                         break;
  66                 idx ++;
  67                 if(idx == WINDOWS_PER_ALLOC) {
  68                         prev = block;
  69                         block = block->Next;
  70                         idx = 0;
  71                 }
  72         }
  73
  74         if( !block )
  75         {
  76                 block = calloc(sizeof(tWindowBlock), 1);
  77                 prev->Next = block;
  78                 idx = 0;
  79         }
  80
  81         ret = block->Windows[idx] = AxWin3_int_CreateWindowStruct(newWinID, DataBytes);
  82         if(newWinID > giAxWin3_HighestUsedWinID)
  83                 giAxWin3_HighestUsedWinID = newWinID;
  84         if(newWinID == giAxWin3_LowestFreeWinID)
  85                 giAxWin3_HighestUsedWinID ++;
  86
  87         if(WinID)       *WinID = newWinID;
  88
  89         return ret;
  90 }
  91
  92 int AxWin3_GetDisplayCount(void)
  93 {
  94         tAxWin_IPCMessage       *msg;
  95         tIPCMsg_ReturnInt       *ret;
  96          int    rv;
  97
  98         msg = AxWin3_int_AllocateIPCMessage(NULL, IPCMSG_GETDISPLAYCOUNT, IPCMSG_FLAG_RETURN, 0);
  99         AxWin3_int_SendIPCMessage(msg);
 100         free(msg);
 101
 102         msg = AxWin3_int_WaitIPCMessage(IPCMSG_GETDISPLAYCOUNT);
 103         if(msg->Size < sizeof(*ret))    return -1;
 104         ret = (void*)msg->Data;
 105         rv = ret->Value;
 106         free(msg);
 107         return rv;
 108 }
 109
 110 int AxWin3_GetDisplayDims(int Display, int *X, int *Y, int *Width, int *Height)
 111 {
 112         tAxWin_IPCMessage       *msg;
 113         tIPCMsg_GetDisplayDims  *req;
 114         tIPCMsg_RetDisplayDims  *ret;
 115
 116         msg = AxWin3_int_AllocateIPCMessage(NULL, IPCMSG_GETDISPLAYDIMS, IPCMSG_FLAG_RETURN, sizeof(*req));
 117         req = (void*)msg->Data;
 118         req->DisplayID = Display;
 119         AxWin3_int_SendIPCMessage(msg);
 120         free(msg);
 121
 122         msg = AxWin3_int_WaitIPCMessage(IPCMSG_GETDISPLAYDIMS);
 123         if(msg->Size < sizeof(*ret))    return -1;
 124         ret = (void*)msg->Data;
 125
 126         if(X)   *X = ret->X;
 127         if(X)   *X = ret->Y;
 128         if(Width)       *Width = ret->W;
 129         if(Height)      *Height = ret->H;
 130
 131         return 0;
 132 }
 133
 134 tHWND AxWin3_CreateWindow(
 135         tHWND Parent, const char *Renderer, int RendererArg,
 136         int DataBytes, tAxWin3_WindowMessageHandler MessageHandler
 137         )
 138 {
 139         tWindow *ret;
 140          int    newWinID;
 141          int    dataSize = sizeof(tIPCMsg_CreateWin) + strlen(Renderer) + 1;
 142         tAxWin_IPCMessage       *msg;
 143         tIPCMsg_CreateWin       *create_win;
 144
 145         // Allocate a window ID
 146         ret = AxWin3_int_AllocateWindowInfo(DataBytes, &newWinID);
 147         if(!ret)        return NULL;
 148         ret->Handler = MessageHandler;
 149
 150         // Create message
 151         msg = AxWin3_int_AllocateIPCMessage(Parent, IPCMSG_CREATEWIN, 0, dataSize);
 152         create_win = (void*)msg->Data;
 153         create_win->NewWinID = newWinID;
 154         create_win->RendererArg = RendererArg;
 155         strcpy(create_win->Renderer, Renderer);
 156
 157         // Send and clean up
 158         AxWin3_int_SendIPCMessage(msg);
 159         free(msg);
 160
 161         // TODO: Detect and handle possible errors
 162
 163         // Return success
 164         return ret;
 165 }
 166
 167 void AxWin3_DestroyWindow(tHWND Window)
 168 {
 169         tAxWin_IPCMessage       *msg;
 170
 171         msg = AxWin3_int_AllocateIPCMessage(Window, IPCMSG_DESTROYWIN, 0, 0);
 172         AxWin3_int_SendIPCMessage(msg);
 173         free(msg);
 174 }
 175
 176 void *AxWin3_int_GetDataPtr(tHWND Window)
 177 {
 178         return Window->Data;
 179 }
 180
 181 void AxWin3_int_HandleMessage(tAxWin_IPCMessage *Msg)
 182 {
 183         tWindow *dest;
 184
 185         dest = AxWin3_int_GetWindowFromID(Msg->Window);
 186
 187         switch(Msg->ID)
 188         {
 189         case IPCMSG_SENDMSG: {
 190                 tIPCMsg_SendMsg *info = (void*)Msg->Data;
 191                 if(Msg->Size < sizeof(*info))   return ;
 192                 if(Msg->Size < sizeof(*info) + info->Length)    return ;
 193                 if(!dest || !dest->Handler)     return ;
 194                 dest->Handler(dest, info->ID, info->Length, info->Data);
 195                 break; }
 196         }
 197 }
 198
 199 void AxWin3_SendMessage(tHWND Window, tHWND Destination, int Message, int Length, void *Data)
 200 {
 201         tAxWin_IPCMessage       *msg;
 202         tIPCMsg_SendMsg *info;
 203
 204         msg = AxWin3_int_AllocateIPCMessage(Window, IPCMSG_SENDMSG, 0, sizeof(*info)+Length);
 205         info = (void*)msg->Data;
 206         info->Remote = AxWin3_int_GetWindowID(Destination);
 207         info->ID = Message;
 208         info->Length = Length;
 209         memcpy(info->Data, Data, Length);
 210
 211         AxWin3_int_SendIPCMessage(msg);
 212         free(msg);
 213 }
 214
 215 void AxWin3_ShowWindow(tHWND Window, int bShow)
 216 {
 217         tAxWin_IPCMessage       *msg;
 218         tIPCMsg_ShowWindow      *info;
 219
 220         msg = AxWin3_int_AllocateIPCMessage(Window, IPCMSG_SHOWWINDOW, 0, sizeof(*info));
 221         info = (void*)msg->Data;
 222         info->bShow = !!bShow;
 223
 224         AxWin3_int_SendIPCMessage(msg);
 225
 226         free(msg);
 227 }
 228
 229 void AxWin3_SetWindowPos(tHWND Window, short X, short Y, short W, short H)
 230 {
 231         tAxWin_IPCMessage       *msg;
 232         tIPCMsg_SetWindowPos    *info;
 233
 234         msg = AxWin3_int_AllocateIPCMessage(Window, IPCMSG_SETWINPOS, 0, sizeof(*info));
 235         info = (void*)msg->Data;
 236
 237         info->bSetPos = 1;
 238         info->bSetDims = 1;
 239         info->X = X;    info->Y = Y;
 240         info->W = W;    info->H = H;
 241
 242         AxWin3_int_SendIPCMessage(msg);
 243         free(msg);
 244 }
 245
 246 void AxWin3_MoveWindow(tHWND Window, short X, short Y)
 247 {
 248         tAxWin_IPCMessage       *msg;
 249         tIPCMsg_SetWindowPos    *info;
 250
 251         msg = AxWin3_int_AllocateIPCMessage(Window, IPCMSG_SETWINPOS, 0, sizeof(*info));
 252         info = (void*)msg->Data;
 253
 254         info->bSetPos = 1;
 255         info->bSetDims = 0;
 256         info->X = X;
 257         info->Y = Y;
 258
 259         AxWin3_int_SendIPCMessage(msg);
 260
 261         free(msg);
 262 }
 263
 264 void AxWin3_ResizeWindow(tHWND Window, short W, short H)
 265 {
 266         tAxWin_IPCMessage       *msg;
 267         tIPCMsg_SetWindowPos    *info;
 268
 269         msg = AxWin3_int_AllocateIPCMessage(Window, IPCMSG_SETWINPOS, 0, sizeof(*info));
 270         info = (void*)msg->Data;
 271
 272         info->bSetPos = 0;
 273         info->bSetDims = 1;
 274         info->W = W;
 275         info->H = H;
 276
 277         AxWin3_int_SendIPCMessage(msg);
 278
 279         free(msg);
 280 }
 281