Usermode/AxWin3 - Working on interface library

[tpg/acess2.git] / Usermode / Libraries / libaxwin3.so_src / wm.c

diff --git a/Usermode/Libraries/libaxwin3.so_src/wm.c b/Usermode/Libraries/libaxwin3.so_src/wm.c
index 8764cd9..7315c05 100644 (file)
--- a/Usermode/Libraries/libaxwin3.so_src/wm.c
+++ b/Usermode/Libraries/libaxwin3.so_src/wm.c
@@ -7,27 +7,98 @@
  */
 #include <axwin3/axwin.h>
 #include <stdlib.h>
+#include <string.h>
+#include "include/ipc.h"
+#include "include/internal.h"
+
+#define WINDOWS_PER_ALLOC      (63)
+
+typedef struct sWindowBlock    tWindowBlock;
+
+typedef struct sAxWin3_Window  tWindow;
+
+// === STRUCTURES ===
+struct sWindowBlock
+{
+       tWindowBlock    *Next;
+       tWindow *Windows[WINDOWS_PER_ALLOC];
+};
+
+// === GLOBALS ===
+ int   giAxWin3_LowestFreeWinID;
+ int   giAxWin3_HighestUsedWinID;
+tWindowBlock   gAxWin3_WindowList;
 
 // === CODE ===
-tHWND AxWin3_CreateWindow(tHWND Parent, const char *Renderer, int Flags)
+tWindow *AxWin3_int_CreateWindowStruct(uint32_t ServerID, int ExtraBytes)
+{
+       tWindow *ret;
+       
+       ret = calloc(sizeof(tWindow) + ExtraBytes, 1);
+       ret->ServerID = ServerID;
+
+       return ret;
+}
+
+tHWND AxWin3_CreateWindow(tHWND Parent, const char *Renderer, int Flags, int DataBytes, void **DataPtr)
 {
+       tWindow *ret;
+        int    newWinID;
         int    dataSize = sizeof(tIPCMsg_CreateWin) + strlen(Renderer) + 1;
        tAxWin_IPCMessage       *msg;
        tIPCMsg_CreateWin       *create_win;
 
-       msg = alloca( sizeof(tAxWin_IPCMessage) + dataSize );
-       create_win = msg->Data;
+       // TODO: Validate `Parent`
        
-       msg->ID = IPCMSG_CREATEWIN;
-       msg->Flags = 0;
-       msg->Window = Parent;   // TODO: Validation
-       msg->Size = dataSize;
+       // Allocate a window ID
+       {
+                int    idx;
+               tWindowBlock *block, *prev;
+               block = &gAxWin3_WindowList;
+               newWinID = giAxWin3_LowestFreeWinID;
+               for( idx = 0; block; newWinID ++ )
+               {
+                       if( block->Windows[idx] == NULL )
+                               break;
+                       idx ++;
+                       if(idx == WINDOWS_PER_ALLOC) {
+                               prev = block;
+                               block = block->Next;
+                               idx = 0;
+                       }
+               }
+               
+               if( !block )
+               {
+                       block = calloc(sizeof(tWindowBlock), 1);
+                       prev->Next = block;
+                       idx = 0;
+               }
+               
+               ret = block->Windows[idx] = AxWin3_int_CreateWindowStruct(newWinID, DataBytes);
 
-       create_win->NewWinID = AxWin3_int_AllocateWindowID();
+               if(newWinID > giAxWin3_HighestUsedWinID)
+                       giAxWin3_HighestUsedWinID = newWinID;
+               if(newWinID == giAxWin3_LowestFreeWinID)
+                       giAxWin3_HighestUsedWinID ++;
+       }
+
+       // Create message
+       msg = AxWin3_int_AllocateIPCMessage(Parent, IPCMSG_CREATEWIN, 0, dataSize);
+       create_win = (void*)msg->Data;  
+       create_win->NewWinID = newWinID;
        create_win->Flags = Flags;
        strcpy(create_win->Renderer, Renderer);
 
-       return NULL;
+       // Send and clean up
+       AxWin3_int_SendIPCMessage(msg);
+       free(msg);
+
+       // TODO: Detect errors in AxWin3_CreateWindow
+
+       // Return success
+       if(DataPtr)     *DataPtr = ret->Data;
+       return ret;
 }
 
 void AxWin3_DestroyWindow(tHWND Window)