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 tHWND AxWin3_CreateWindow(
  93         tHWND Parent, const char *Renderer, int RendererArg,
  94         int DataBytes, tAxWin3_WindowMessageHandler MessageHandler
  95         )
  96 {
  97         tWindow *ret;
  98          int    newWinID;
  99          int    dataSize = sizeof(tIPCMsg_CreateWin) + strlen(Renderer) + 1;
 100         tAxWin_IPCMessage       *msg;
 101         tIPCMsg_CreateWin       *create_win;
 102
 103         // Allocate a window ID
 104         ret = AxWin3_int_AllocateWindowInfo(DataBytes, &newWinID);
 105         if(!ret)        return NULL;
 106         ret->Handler = MessageHandler;
 107
 108         // Create message
 109         msg = AxWin3_int_AllocateIPCMessage(Parent, IPCMSG_CREATEWIN, 0, dataSize);
 110         create_win = (void*)msg->Data;
 111         create_win->NewWinID = newWinID;
 112         create_win->RendererArg = RendererArg;
 113         strcpy(create_win->Renderer, Renderer);
 114
 115         // Send and clean up
 116         AxWin3_int_SendIPCMessage(msg);
 117         free(msg);
 118
 119         // TODO: Detect and handle possible errors
 120
 121         // Return success
 122         return ret;
 123 }
 124
 125 void AxWin3_DestroyWindow(tHWND Window)
 126 {
 127         tAxWin_IPCMessage       *msg;
 128
 129         msg = AxWin3_int_AllocateIPCMessage(Window, IPCMSG_DESTROYWIN, 0, 0);
 130         AxWin3_int_SendIPCMessage(msg);
 131         free(msg);
 132 }
 133
 134 void *AxWin3_int_GetDataPtr(tHWND Window)
 135 {
 136         return Window->Data;
 137 }
 138
 139 void AxWin3_int_HandleMessage(tAxWin_IPCMessage *Msg)
 140 {
 141         tWindow *dest;
 142
 143         dest = AxWin3_int_GetWindowFromID(Msg->Window);
 144
 145         switch(Msg->ID)
 146         {
 147         case IPCMSG_SENDMSG: {
 148                 tIPCMsg_SendMsg *info = (void*)Msg->Data;
 149                 if(Msg->Size < sizeof(*info))   return ;
 150                 if(Msg->Size < sizeof(*info) + info->Length)    return ;
 151                 if(!dest || !dest->Handler)     return ;
 152                 dest->Handler(dest, info->ID, info->Length, info->Data);
 153                 break; }
 154         }
 155 }
 156
 157 void AxWin3_SendMessage(tHWND Window, tHWND Destination, int Message, int Length, void *Data)
 158 {
 159         tAxWin_IPCMessage       *msg;
 160         tIPCMsg_SendMsg *info;
 161
 162         msg = AxWin3_int_AllocateIPCMessage(Window, IPCMSG_SENDMSG, 0, sizeof(*info)+Length);
 163         info = (void*)msg->Data;
 164         info->Remote = AxWin3_int_GetWindowID(Destination);
 165         info->ID = Message;
 166         info->Length = Length;
 167         memcpy(info->Data, Data, Length);
 168
 169         AxWin3_int_SendIPCMessage(msg);
 170         free(msg);
 171 }
 172
 173 void AxWin3_ShowWindow(tHWND Window, int bShow)
 174 {
 175         tAxWin_IPCMessage       *msg;
 176         tIPCMsg_ShowWindow      *info;
 177
 178         msg = AxWin3_int_AllocateIPCMessage(Window, IPCMSG_SHOWWINDOW, 0, sizeof(*info));
 179         info = (void*)msg->Data;
 180         info->bShow = !!bShow;
 181
 182         AxWin3_int_SendIPCMessage(msg);
 183
 184         free(msg);
 185 }
 186
 187 void AxWin3_SetWindowPos(tHWND Window, short X, short Y, short W, short H)
 188 {
 189         tAxWin_IPCMessage       *msg;
 190         tIPCMsg_SetWindowPos    *info;
 191
 192         msg = AxWin3_int_AllocateIPCMessage(Window, IPCMSG_SETWINPOS, 0, sizeof(*info));
 193         info = (void*)msg->Data;
 194
 195         info->bSetPos = 1;
 196         info->bSetDims = 1;
 197         info->X = X;    info->Y = Y;
 198         info->W = W;    info->H = H;
 199
 200         AxWin3_int_SendIPCMessage(msg);
 201         free(msg);
 202 }
 203
 204 void AxWin3_MoveWindow(tHWND Window, short X, short Y)
 205 {
 206         tAxWin_IPCMessage       *msg;
 207         tIPCMsg_SetWindowPos    *info;
 208
 209         msg = AxWin3_int_AllocateIPCMessage(Window, IPCMSG_SETWINPOS, 0, sizeof(*info));
 210         info = (void*)msg->Data;
 211
 212         info->bSetPos = 1;
 213         info->bSetDims = 0;
 214         info->X = X;
 215         info->Y = Y;
 216
 217         AxWin3_int_SendIPCMessage(msg);
 218
 219         free(msg);
 220 }
 221
 222 void AxWin3_ResizeWindow(tHWND Window, short W, short H)
 223 {
 224         tAxWin_IPCMessage       *msg;
 225         tIPCMsg_SetWindowPos    *info;
 226
 227         msg = AxWin3_int_AllocateIPCMessage(Window, IPCMSG_SETWINPOS, 0, sizeof(*info));
 228         info = (void*)msg->Data;
 229
 230         info->bSetPos = 0;
 231         info->bSetDims = 1;
 232         info->W = W;
 233         info->H = H;
 234
 235         AxWin3_int_SendIPCMessage(msg);
 236
 237         free(msg);
 238 }
 239