Usermode/AxWin3 - Duplicate renderer detection, debug changes
[tpg/acess2.git] / Usermode / Applications / axwin3_src / WM / ipc.c
index 01f16be..7155c11 100644 (file)
  * - Interprocess communication
  */
 #include <common.h>
-#include <acess/sys.h>
-#include <net.h>
 #include <string.h>
 #include <ipcmessages.h>
+#include <stdio.h>
+#include <wm.h>
+#include <wm_internals.h>
+#include <wm_hotkeys.h>        // Hotkey registration
+#include <wm_renderer.h>       // Renderer IPC messages
+#include <ipc_int.h>
 
-#define AXWIN_PORT     4101
+#define MAX_WINDOWS_PER_APP    128
 
-#define STATICBUF_SIZE 64
-
-// === TYPES ===
-typedef struct sIPC_Type       tIPC_Type;
-struct sIPC_Type
-{
-        int    (*GetIdentSize)(void *Ident);
-        int    (*CompareIdent)(void *Ident1, void *Ident2);
-       void    (*SendMessage)(void *Ident, size_t, void *Data);
-};
+// === IMPORTS ===
+extern tWindow *gpWM_FocusedWindow;    // Needed for _FocusWindow
 
 // === PROTOTYPES ===
-void   IPC_Init(void);
-void   IPC_FillSelect(int *nfds, fd_set *set);
-void   IPC_HandleSelect(fd_set *set);
-void   IPC_Handle(tIPC_Type *IPCType, void *Ident, size_t MsgLen, tAxWin_Message *Msg);
-void   IPC_ReturnValue(tIPC_Type *IPCType, void *Ident, int MessageID, uint32_t Value);
- int   IPC_Type_Datagram_GetSize(void *Ident);
- int   IPC_Type_Datagram_Compare(void *Ident1, void *Ident2);
-void   IPC_Type_Datagram_Send(void *Ident, size_t Length, void *Data);
- int   IPC_Type_Sys_GetSize(void *Ident);
- int   IPC_Type_Sys_Compare(void *Ident1, void *Ident2);
-void   IPC_Type_Sys_Send(void *Ident, size_t Length, void *Data);
+tIPC_Client    *IPC_int_GetClient(const tIPC_Type *IPCType, const void *Ident);
+void   IPC_int_DropClient(tIPC_Client *Client);
+void   IPC_Handle(tIPC_Client *Client, size_t MsgLen, tAxWin_IPCMessage *Msg);
 
 // === GLOBALS ===
- int   giNetworkFileHandle = -1;
- int   giMessagesFileHandle = -1;
-tIPC_Type      gIPC_Type_Datagram = {
-       IPC_Type_Datagram_GetSize,
-       IPC_Type_Datagram_Compare, 
-       IPC_Type_Datagram_Send
-};
-tIPC_Type      gIPC_Type_SysMessage = {
-       IPC_Type_Sys_GetSize,
-       IPC_Type_Sys_Compare,
-       IPC_Type_Sys_Send
-};
+ int   giIPC_ClientCount;
+tIPC_Client    **gIPC_Clients;
 
 // === CODE ===
-void IPC_Init(void)
+// --- Client -> Window Mappings
+int _CompareClientPtrs(const void *_a, const void *_b)
 {
-        int    tmp;
-       // TODO: Check this
-       giNetworkFileHandle = open("/Devices/ip/loop/udp", OPENFLAG_READ);
-       tmp = AXWIN_PORT;       ioctl(giNetworkFileHandle, 4, &tmp);    // TODO: Don't hard-code IOCtl number
+       tIPC_Client     *a = *(tIPC_Client**)_a;
+       tIPC_Client     *b = *(tIPC_Client**)_b;
+
+       ASSERT(a);
+       if(!b)  return -1;
+
+       if(a->IPCType < b->IPCType)     return -1;
+       if(a->IPCType > b->IPCType)     return 1;
+       
+       return a->IPCType->CompareIdent(a->Ident, b->Ident);
 }
 
-void IPC_FillSelect(int *nfds, fd_set *set)
+int IPC_int_BSearchClients(const tIPC_Client *TargetClient, int *Pos)
 {
-       if( giNetworkFileHandle > *nfds )       *nfds = giNetworkFileHandle;
-       FD_SET(giNetworkFileHandle, set);
+        int    div;
+        int    cmp = -1;
+        int    pos = 0;
+
+       div = giIPC_ClientCount;
+       pos = div/2;
+       while(div > 0)
+       {
+               div /= 2;
+               _SysDebug("Cmp with %i [%i] (%p)", pos, div, gIPC_Clients[pos]);
+               cmp = _CompareClientPtrs(&TargetClient, &gIPC_Clients[pos]);
+//             _SysDebug("Checking against %i gives %i", pos, cmp);
+               if(cmp == 0)    break;
+               if(cmp < 0)
+                       pos -= div;
+               else
+                       pos += div;
+       }
+       
+       // - Return if found    
+       if(cmp == 0) {
+               *Pos = pos;
+               return 1;
+       }
+
+       // Adjust pos to be the index where the new client will be placed
+       if(cmp > 0)     pos ++;
+       *Pos = pos;
+       return 0;
 }
 
-void IPC_HandleSelect(fd_set *set)
+tIPC_Client *IPC_int_GetClient(const tIPC_Type *IPCType, const void *Ident)
 {
-       if( FD_ISSET(giNetworkFileHandle, set) )
+        int    pos = 0;        // Position where the new client will be inserted
+        int    ident_size;
+       tIPC_Client     *ret;
+
+       // - Search list of registered clients
+       if(giIPC_ClientCount > 0)
        {
-               char    staticBuf[STATICBUF_SIZE];
-                int    readlen, identlen;
-               char    *msg;
+               tIPC_Client     target;
+               target.IPCType = IPCType;
+               target.Ident = Ident;
+               if( IPC_int_BSearchClients(&target, &pos) )
+                       return gIPC_Clients[pos];
+       }
 
-               readlen = read(giNetworkFileHandle, staticBuf, sizeof(staticBuf));
-               
-               identlen = 4 + Net_GetAddressSize( ((uint16_t*)staticBuf)[1] );
-               msg = staticBuf + identlen;
 
-               IPC_Handle(&gIPC_Type_Datagram, staticBuf, readlen - identlen, (void*)msg);
-               _SysDebug("IPC_HandleSelect: UDP handled");
+       // - Create a new client entry
+       ident_size = IPCType->GetIdentSize(Ident);
+//     _SysDebug("ident_size = %i", ident_size);
+       ret = malloc( sizeof(tIPC_Client) + ident_size );
+       if(!ret)        return NULL;
+       ret->IPCType = IPCType;
+       ret->Ident = ret + 1;   // Get the end of the structure
+       memcpy( (void*)ret->Ident, Ident, ident_size );
+       ret->nWindows = 0;
+       ret->Windows = NULL;
+       
+       // TODO: Register some way of detecting the client disconnecting
+       //       > Wait on the thread / register with kernel somehow
+       //       > Sockets are easier, but UDP is harder. Might get rid of it
+
+       // - Insert
+       giIPC_ClientCount ++;
+       gIPC_Clients = realloc(gIPC_Clients, giIPC_ClientCount*sizeof(tIPC_Client*));
+       memmove(&gIPC_Clients[pos+1], &gIPC_Clients[pos], (giIPC_ClientCount-pos-1) * sizeof(tIPC_Client*));
+       gIPC_Clients[pos] = ret;
+
+       return ret;
+}
+
+void IPC_int_DropClient(tIPC_Client *Client)
+{
+       // Remove from client list
+        int    pos;
+       if( !IPC_int_BSearchClients(Client, &pos) ) {
+               _SysDebug("IPC_int_DropClient: Can't find client %p", Client);
+               return ;
        }
 
-       while(SysGetMessage(NULL, NULL))
+       giIPC_ClientCount --;
+       memmove(&gIPC_Clients[pos], &gIPC_Clients[pos+1], (giIPC_ClientCount-pos)*sizeof(tIPC_Client*));
+
+       // Terminate client's windows
+       // - If there were active windows, show an error?
+        int    nWindowsDestroyed = 0;
+       for(int i = 0; i < Client->nWindows; i ++)
+       {
+               if( Client->Windows[i] )
+               {
+                       _SysDebug("Window %p:%i %p still exists", Client, i, Client->Windows[i]);
+                       WM_DestroyWindow(Client->Windows[i]);
+                       nWindowsDestroyed ++;
+               }
+       }
+       if( nWindowsDestroyed )
        {
-               pid_t   tid;
-                int    len = SysGetMessage(&tid, NULL);
-               char    data[len];
-               SysGetMessage(NULL, data);
+               _SysDebug("TODO: Show notice that application exited without destroying windows");
+       }
+       
+       // Free client structure
+       free(Client);
+       _SysDebug("Dropped client %p", Client);
+}
+
+tWindow *IPC_int_GetWindow(tIPC_Client *Client, uint32_t WindowID)
+{
+       if( WindowID == -1 )
+               return NULL;
+
+       if( WindowID >= Client->nWindows ) {
+               return NULL;
+       }
+
+       return Client->Windows[WindowID];
+}
 
-               IPC_Handle(&gIPC_Type_SysMessage, &tid, len, (void*)data);
-               _SysDebug("IPC_HandleSelect: Message handled");
+void IPC_int_SetWindow(tIPC_Client *Client, uint32_t WindowID, tWindow *WindowPtr)
+{
+       if( WindowID >= MAX_WINDOWS_PER_APP )
+               return ;
+
+       if( WindowID >= Client->nWindows )
+       {
+                int    oldCount = Client->nWindows;
+               Client->nWindows = WindowID + 1;
+               Client->Windows = realloc(Client->Windows, Client->nWindows*sizeof(tWindow*));
+               memset( &Client->Windows[oldCount],  0, (Client->nWindows-oldCount)*sizeof(tWindow*) );
+               _SysDebug("Expanded %p's window list from %i to %i", Client, oldCount, Client->nWindows);
        }
+
+       _SysDebug("Assigned %p to window %i for %p", WindowPtr, WindowID, Client);      
+       Client->Windows[WindowID] = WindowPtr;
 }
 
-void IPC_Handle(tIPC_Type *IPCType, void *Ident, size_t MsgLen, tAxWin_IPCMessage *Msg)
+// --- IPC Message Handlers ---
+int IPC_Msg_Ping(tIPC_Client *Client, tAxWin_IPCMessage *Msg)
 {
-       tApplication    *app;
-       tElement        *ele;
+       ASSERT(Msg->ID == IPCMSG_PING);
        
-       _SysDebug("IPC_Handle: (IPCType=%p, Ident=%p, MsgLen=%i, Msg=%p)",
-               IPCType, Ident, MsgLen, Msg);
+       if( !(Msg->Flags & IPCMSG_FLAG_RETURN) )        return 0;
        
-       if( MsgLen < sizeof(tAxWin_Message) )
-               return ;
-       if( MsgLen < sizeof(tAxWin_Message) + Msg->Size )
-               return ;
+       if( Msg->Size < 4 )     return -1;
+       
+       tIPCMsg_ReturnInt       *ret = (void*)Msg->Data;
+       Msg->ID = IPCMSG_PING;
+       Msg->Size = sizeof(*ret);
+       ret->Value = AXWIN_VERSION;
+       Client->IPCType->SendMessage(Client->Ident, sizeof(*Msg)+sizeof(*ret), Msg);
+       return 0;
+}
+
+int IPC_Msg_GetDisplayCount(tIPC_Client *Client, tAxWin_IPCMessage *Msg)
+{
+       tAxWin_IPCMessage       *ret_hdr;
+       tIPCMsg_ReturnInt       *ret;
+       char    buf[sizeof(*ret_hdr)+sizeof(*ret)];
+       
+       ASSERT(Msg->ID == IPCMSG_GETDISPLAYCOUNT);
+
+       if( !(Msg->Flags & IPCMSG_FLAG_RETURN) )        return 0;
+       
+       ret_hdr = (void*)buf;
+       ret_hdr->ID = IPCMSG_GETDISPLAYCOUNT;
+       ret_hdr->Flags = 0;
+       ret_hdr->Window = -1;
+       ret_hdr->Size = sizeof(*ret);
+       ret = (void*)ret_hdr->Data;
+       ret->Value = 1; // HARD CODE - Current version only supports one display
+       
+       Client->IPCType->SendMessage(Client->Ident, sizeof(buf), buf);
+       return 0;
+}
+
+int IPC_Msg_GetDisplayDims(tIPC_Client *Client, tAxWin_IPCMessage *Msg)
+{
+       tIPCMsg_GetDisplayDims  *info;
+       tAxWin_IPCMessage       *ret_hdr;
+       tIPCMsg_RetDisplayDims  *ret;
+       char    buf[sizeof(*ret_hdr)+sizeof(*ret)];
        
-       app = AxWin_GetClient(IPCType, Ident);
+       ASSERT(Msg->ID == IPCMSG_GETDISPLAYDIMS);
 
-       switch((enum eAxWin_IPCMessageTypes) Msg->ID)
+       if( !(Msg->Flags & IPCMSG_FLAG_RETURN) )        return 0;
+
+       info = (void*)Msg->Data;        
+
+       ret_hdr = (void*)buf;
+       ret_hdr->ID = IPCMSG_GETDISPLAYDIMS;
+       ret_hdr->Flags = 0;
+       ret_hdr->Window = -1;
+       ret_hdr->Size = sizeof(*ret);
+       ret = (void*)ret_hdr->Data;
+       
+       // HARD CODE! Only one display supported
+       if( info->DisplayID == 0 )
        {
-       // --- Ping message (reset timeout and get server version)
-       case IPCMSG_PING:
-               _SysDebug(" IPC_Handle: IPCMSG_PING");
-               if( MsgLen < sizeof(tAxWin_Message) + 4 )       return;
-               if( Msg->Flags & IPCMSG_FLAG_RETURN )
-               {
-                       Msg->ID = IPCMSG_PING;
-                       Msg->Size = sizeof(tIPCMsg_Return);
-                       ((tIPCMsg_Return*)Msg->Data)->Value = AXWIN_VERSION;
-                       IPCType->SendMessage(Ident, sizeof(tIPCMsg_Return), Msg);
-               }
-               break;
+               ret->X = 0;
+               ret->Y = 0;
+               ret->W = giScreenWidth;
+               ret->H = giScreenHeight;
+       }
+       else
+       {
+               ret->X = 0;     ret->Y = 0;
+               ret->W = 0;     ret->H = 0;
+       }
+       
+       Client->IPCType->SendMessage(Client->Ident, sizeof(buf), buf);
+       return 0;
+}
+
+int IPC_Msg_SendMsg(tIPC_Client *Client, tAxWin_IPCMessage *Msg)
+{
+       tIPCMsg_SendMsg *info = (void*)Msg->Data;
+       tWindow *src, *dest;
+
+       ASSERT(Msg->ID == IPCMSG_SENDMSG);
+       
+       // - Sanity checks
+       if( Msg->Size < sizeof(tIPCMsg_SendMsg) )
+               return -1;
+       if( Msg->Size < sizeof(tIPCMsg_SendMsg) + info->Length )
+               return -1;
+       
+       src = IPC_int_GetWindow(Client, Msg->Window);
+       if(!src)        return 1;
+       dest = IPC_int_GetWindow(Client, info->Remote);
+       if(!dest)       return 1;
+
+       WM_SendMessage(src, dest, info->ID, info->Length, info->Data);  
+
+       return 0;
+}
 
-       // --- 
+int IPC_Msg_CreateWin(tIPC_Client *Client, tAxWin_IPCMessage *Msg)
+{
+       tIPCMsg_CreateWin       *info = (void*)Msg->Data;
+       tWindow *newwin, *parent;
+
+       ASSERT(Msg->ID == IPCMSG_CREATEWIN);
 
-       // --- Unknown message
-       default:
-               fprintf(stderr, "WARNING: Unknown message %i (%p)\n", Msg->ID, IPCType);
-               _SysDebug("WARNING: Unknown message %i (%p)\n", Msg->ID, IPCType);
-               break;
+       // - Sanity checks
+       //  > +1 is for NULL byte on string
+       if( Msg->Size < sizeof(*info) + 1 ) {
+               _SysDebug("IPC_Msg_CreateWin: Size check 1 failed");
+               return -1;
+       }
+       if( info->Renderer[Msg->Size - sizeof(*info) - 1] != '\0' ) {
+               _SysDebug("IPC_Msg_CreateWin: Size check 2 failed");
+               _SysDebug("info = {");
+               _SysDebug("  .NewWinID = %i", info->NewWinID);
+               _SysDebug("  .RendererArg = %i", info->RendererArg);
+               _SysDebug("  .Renderer = '%.*s'", Msg->Size - sizeof(*info), info->Renderer);
+               _SysDebug("}");
+               return -1;
        }
+       
+       // - Get the parent window ID
+       parent = IPC_int_GetWindow(Client, Msg->Window);
+
+       // Catch creating a window with an existing ID
+       if( IPC_int_GetWindow(Client, info->NewWinID) )
+               return 1;
+
+       // - Create the new window, and save its pointer
+       newwin = WM_CreateWindow(parent, Client, info->NewWinID, info->RendererArg, info->Renderer);
+       IPC_int_SetWindow(Client, info->NewWinID, newwin);
+
+       return 0;
 }
 
-void IPC_ReturnValue(tIPC_Type *IPCType, void *Ident, int MessageID, uint32_t Value)
+int IPC_Msg_DestroyWin(tIPC_Client *Client, tAxWin_IPCMessage *Msg)
 {
-       char    data[sizeof(tAxWin_Message) + sizeof(tAxWin_RetMsg)];
-       tAxWin_Message  *msg = (void *)data;
-       tAxWin_RetMsg   *ret_msg = (void *)msg->Data;
+       tWindow *win;
        
-       msg->Source = 0;        // 0 = Server
-       msg->ID = MSG_SRSP_RETURN;
-       msg->Size = sizeof(tAxWin_RetMsg);
-       ret_msg->ReqID = MessageID;
-       ret_msg->Rsvd = 0;
-       ret_msg->Value = Value;
+       ASSERT(Msg->ID == IPCMSG_DESTROYWIN);
+
+       win = IPC_int_GetWindow(Client, Msg->Window);
+       if( !win )
+               return 0;
        
-       IPCType->SendMessage(Ident, sizeof(data), data);
+       WM_DestroyWindow(win);
+       IPC_int_SetWindow(Client, Msg->Window, NULL);
+       return 0;
 }
 
-int IPC_Type_Datagram_GetSize(void *Ident)
+int IPC_Msg_SetWindowTitle(tIPC_Client *Client, tAxWin_IPCMessage *Msg)
 {
-       return 4 + Net_GetAddressSize( ((uint16_t*)Ident)[1] );
+       tWindow *win;
+
+       ASSERT(Msg->ID == IPCMSG_SETWINTITLE);
+       
+       if( Msg->Size < 1 )     return -1;
+       if( Msg->Data[ Msg->Size-1 ] != '\0' )  return -1;      
+
+       win = IPC_int_GetWindow(Client, Msg->Window);
+       if(!win)        return 1;
+
+       WM_SetWindowTitle(win, Msg->Data);
+
+       return 0;
 }
 
-int IPC_Type_Datagram_Compare(void *Ident1, void *Ident2)
+int IPC_Msg_ShowWindow(tIPC_Client *Client, tAxWin_IPCMessage *Msg)
 {
-       // Pass the buck :)
-       // - No need to worry about mis-matching sizes, as the size is computed
-       //   from the 3rd/4th bytes, hence it will differ before the size is hit.
-       return memcmp(Ident1, Ident2, IPC_Type_Datagram_GetSize(Ident1));
+       tIPCMsg_Boolean *info = (void*)Msg->Data;
+       tWindow *win;
+       
+       ASSERT(Msg->ID == IPCMSG_SHOWWINDOW);
+       
+       if( Msg->Size < sizeof(*info) ) return -1;
+       
+       win = IPC_int_GetWindow(Client, Msg->Window);
+       if(!win)        return 1;
+
+       WM_ShowWindow(win, !!info->Value);
+       
+       return 0;
+}
+
+int IPC_Msg_DecorateWindow(tIPC_Client *Client, tAxWin_IPCMessage *Msg)
+{
+       tIPCMsg_Boolean *info = (void*)Msg->Data;
+       tWindow *win;
+       
+       if( Msg->Size < sizeof(*info) ) return -1;
+       
+       win = IPC_int_GetWindow(Client, Msg->Window);
+       if(!win)        return 1;
+       
+       WM_DecorateWindow(win, !!info->Value);
+       return 0;
+}
+
+int IPC_Msg_FocusWindow(tIPC_Client *Client, tAxWin_IPCMessage *Msg)
+{
+       tWindow *win;
+
+       ASSERT(Msg->ID == IPCMSG_FOCUSWINDOW);
+       
+       // Don't allow the focus to be changed unless the client has the focus
+//     if(!gpWM_FocusedWindow) return 1;
+//     if(gpWM_FocusedWindow->Client != Client)        return 1;
+
+       win = IPC_int_GetWindow(Client, Msg->Window);
+       if(!win)        return 1;
+
+       WM_FocusWindow(win);
+
+       return 0;
+}
+
+int IPC_Msg_SetWinPos(tIPC_Client *Client, tAxWin_IPCMessage *Msg)
+{
+       tIPCMsg_SetWindowPos    *info = (void*)Msg->Data;
+       tWindow *win;
+       
+       ASSERT(Msg->ID == IPCMSG_SETWINPOS);
+       
+       if(Msg->Size < sizeof(*info))   return -1;
+       
+       win = IPC_int_GetWindow(Client, Msg->Window);
+       if(!win)        return 1;
+       
+       _SysDebug("info = {..., bSetPos=%i,bSetDims=%i}", info->bSetPos, info->bSetDims);
+       
+       if(info->bSetPos)
+               WM_MoveWindow(win, info->X, info->Y);
+       if(info->bSetDims)
+               WM_ResizeWindow(win, info->W, info->H);
+       
+       return 0;
 }
 
-void IPC_Type_Datagram_Send(void *Ident, size_t Length, void *Data)
+int IPC_Msg_RegisterAction(tIPC_Client *Client, tAxWin_IPCMessage *Msg)
 {
-        int    identlen = IPC_Type_Datagram_GetSize(Ident);
-       char    tmpbuf[ identlen + Length ];
-       memcpy(tmpbuf, Ident, identlen);        // Header
-       memcpy(tmpbuf + identlen, Data, Length);        // Data
-       // TODO: Handle fragmented packets
-       write(giNetworkFileHandle, tmpbuf, sizeof(tmpbuf));
+       tIPCMsg_RegAction       *info = (void*)Msg->Data;
+       tWindow *win;
+       
+       ASSERT(Msg->ID == IPCMSG_REGACTION);
+
+       if( Msg->Size < sizeof(*info) + 1 )
+               return -1;
+       
+       win = IPC_int_GetWindow(Client, Msg->Window);
+       if(!win)        return 1;
+
+       if( strnlen(info->Action, Msg->Size - sizeof(*info)) == Msg->Size - sizeof(*info) )
+               return 1;
+
+       _SysDebug("RegisterAction %p:%i [%i]\"%s\"",
+               Client, Msg->Window, info->Index, info->Action
+               );
+
+       WM_Hotkey_RegisterAction(info->Action, win, info->Index);
+
+       return 0;
 }
 
-int IPC_Type_Sys_GetSize(void *Ident)
+int (*gIPC_MessageHandlers[])(tIPC_Client *Client, tAxWin_IPCMessage *Msg) = {
+       IPC_Msg_Ping,
+       IPC_Msg_GetDisplayCount,
+       IPC_Msg_GetDisplayDims,
+       IPC_Msg_SendMsg,
+       IPC_Msg_CreateWin,
+       IPC_Msg_DestroyWin,     // Destroy window
+       IPC_Msg_SetWindowTitle,
+       IPC_Msg_ShowWindow,
+       IPC_Msg_DecorateWindow,
+       IPC_Msg_FocusWindow,
+       IPC_Msg_SetWinPos,
+       IPC_Msg_RegisterAction
+};
+const int giIPC_NumMessageHandlers = sizeof(gIPC_MessageHandlers)/sizeof(gIPC_MessageHandlers[0]);
+
+void IPC_Handle(tIPC_Client *Client, size_t MsgLen, tAxWin_IPCMessage *Msg)
 {
-       return sizeof(pid_t);
+        int    rv = 0;
+       
+//     _SysDebug("IPC_Handle: (IPCType=%p, Ident=%p, MsgLen=%i, Msg=%p)",
+//             IPCType, Ident, MsgLen, Msg);
+       
+       if( MsgLen < sizeof(tAxWin_IPCMessage) )
+               return ;
+       if( MsgLen < sizeof(tAxWin_IPCMessage) + Msg->Size )
+               return ;
+       
+       if( Msg->Flags & IPCMSG_FLAG_RENDERER )
+       {
+               tWindow *win = IPC_int_GetWindow(Client, Msg->Window);
+               if( !win ) {
+                       _SysDebug("WARNING: NULL window in message %i (%x)", Msg->ID, Msg->Window);
+                       return ;
+               }
+               tWMRenderer     *renderer = win->Renderer;
+               if( Msg->ID >= renderer->nIPCHandlers ) {
+                       _SysDebug("WARNING: Message %i out of range in %s", Msg->ID, renderer->Name);
+                       return ;
+               }
+               if( !renderer->IPCHandlers[Msg->ID] ) {
+                       _SysDebug("WARNING: Message %i has no handler in %s", Msg->ID, renderer->Name);
+                       return ;
+               }
+               _SysDebug("IPC_Handle: Call %s-%i %ib", renderer->Name, Msg->ID, Msg->Size);
+               rv = renderer->IPCHandlers[Msg->ID](win, Msg->Size, Msg->Data);
+               if( rv )
+                       _SysDebug("IPC_Handle: rv != 0 (%i)", rv);
+       }
+       else
+       {
+               if( Msg->ID >= giIPC_NumMessageHandlers ) {
+                       fprintf(stderr, "WARNING: Unknown message %i (%p)\n", Msg->ID, Client);
+                       _SysDebug("WARNING: Unknown message %i (%p)", Msg->ID, Client);
+                       return ;
+               }
+               
+               if( !gIPC_MessageHandlers[ Msg->ID ] ) {
+                       fprintf(stderr, "WARNING: Message %i does not have a handler\n", Msg->ID);
+                       _SysDebug("WARNING: Message %i does not have a handler", Msg->ID);
+                       return ;
+               }
+       
+               _SysDebug("IPC_Handle: Call WM-%i %ib", Msg->ID, Msg->Size);
+               rv = gIPC_MessageHandlers[Msg->ID](Client, Msg);
+               if( rv )
+                       _SysDebug("IPC_Handle: rv != 0 (%i)", rv);
+       }
 }
 
-int IPC_Type_Sys_Compare(void *Ident1, void *Ident2)
+// Dispatch a message to the client
+void IPC_SendWMMessage(tIPC_Client *Client, uint32_t Src, uint32_t Dst, int MsgID, int Len, void *Data)
 {
-       return *(int*)Ident1 - *(int*)Ident2;
+       tAxWin_IPCMessage       *hdr;
+       tIPCMsg_SendMsg         *msg;
+       char    buf[sizeof(*hdr)+sizeof(*msg)+Len];
+       
+       hdr = (void*)buf;
+       msg = (void*)hdr->Data;
+       
+       hdr->ID = IPCMSG_SENDMSG;
+       hdr->Flags = 0;
+       hdr->Size = sizeof(*msg) + Len;
+       hdr->Window = Dst;
+       
+       msg->Remote = Src;
+       msg->ID = MsgID;
+       msg->Length = Len;
+       memcpy(msg->Data, Data, Len);
+       
+       Client->IPCType->SendMessage(Client->Ident, sizeof(buf), buf);
 }
 
-void IPC_Type_Sys_Send(void *Ident, size_t Length, void *Data)
+// --- Server->Client replies
+void IPC_SendReply(tIPC_Client *Client, uint32_t WinID, int MsgID, size_t Len, const void *Data)
 {
-       SysSendMessage( *(tid_t*)Ident, Length, Data );
+       tAxWin_IPCMessage       *hdr;
+       char    buf[sizeof(*hdr)+Len];
+       
+       hdr = (void*)buf;
+       
+       hdr->ID = MsgID;
+       hdr->Flags = IPCMSG_FLAG_RENDERER;
+       hdr->Size = Len;
+       hdr->Window = WinID;
+       
+       memcpy(hdr->Data, Data, Len);
+       Client->IPCType->SendMessage(Client->Ident, sizeof(buf), buf);
 }
+

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