Usermode/Applications/axwin3_src/libaxwin3.so_src/r_menu.c

   1 /*
   2  * AxWin3 Interface Library
   3  * - By John Hodge (thePowersGang)
   4  *
   5  * r_menu.c
   6  * - Menu renderer interface
   7  */
   8 #include <stdlib.h>
   9 #include <axwin3/axwin.h>
  10 #include <axwin3/menu.h>
  11 #include <menu_messages.h>
  12 #include "include/internal.h"
  13 #include "include/ipc.h"
  14 #include <string.h>
  15
  16 // === TYPES ===
  17 typedef struct sMenuWindowInfo  tMenuWindowInfo;
  18
  19 struct sAxWin3_MenuItem
  20 {
  21         tHWND   Window;
  22          int    ID;
  23         tAxWin3_Menu_Callback   Callback;
  24         void    *CbPtr;
  25         tHWND   SubMenu;
  26 };
  27
  28 struct sMenuWindowInfo
  29 {
  30          int    nItems;
  31         tAxWin3_MenuItem        *Items;
  32 };
  33
  34 // === CODE ===
  35 int AxWin3_Menu_int_Callback(tHWND Window, int Message, int Length, void *Data)
  36 {
  37         tMenuWindowInfo *info = AxWin3_int_GetDataPtr(Window);
  38         switch(Message)
  39         {
  40         case MSG_MENU_SELECT: {
  41                 tMenuMsg_Select *msg = Data;
  42                 tAxWin3_MenuItem        *item;
  43                 if(Length < sizeof(tMenuMsg_Select))    return -1;
  44                 if(msg->ID >= info->nItems)     return -1;
  45                 item = &info->Items[msg->ID];
  46                 if(item->Callback)      item->Callback(item->CbPtr);
  47                 return 0; }
  48         }
  49         return 1;
  50 }
  51
  52 tHWND AxWin3_Menu_Create(tHWND Parent)
  53 {
  54         tHWND   ret;
  55         tMenuWindowInfo *info;
  56
  57         ret = AxWin3_CreateWindow(Parent, "Menu", 0, sizeof(*info), AxWin3_Menu_int_Callback);
  58         if(!ret)        return ret;
  59
  60         info = AxWin3_int_GetDataPtr(ret);
  61         info->nItems = 0;
  62         info->Items = NULL;
  63
  64         return ret;
  65 }
  66
  67 void AxWin3_Menu_ShowAt(tHWND Menu, int X, int Y)
  68 {
  69         AxWin3_MoveWindow(Menu, X, Y);
  70         AxWin3_ShowWindow(Menu, 1);
  71 }
  72
  73 tAxWin3_MenuItem *AxWin3_Menu_AddItem(
  74         tHWND Menu, const char *Label,
  75         tAxWin3_Menu_Callback Cb, void *Ptr,
  76         int Flags, tHWND SubMenu
  77         )
  78 {
  79         tMenuWindowInfo *info;
  80         tAxWin3_MenuItem        *ret;
  81
  82         info = AxWin3_int_GetDataPtr(Menu);
  83
  84         info->nItems ++;
  85         info->Items = realloc(info->Items, sizeof(*info->Items)*info->nItems);
  86         if(!info->Items) {
  87                 _SysDebug("ERROR: Realloc Failed");
  88                 return NULL;
  89         }
  90
  91         ret = &info->Items[info->nItems-1];
  92         ret->ID = info->nItems - 1;
  93         ret->Window = Menu;
  94         ret->Callback = Cb;
  95         ret->CbPtr = Ptr;
  96         ret->SubMenu = SubMenu;
  97
  98         {
  99                 tAxWin_IPCMessage       *msg;
 100                 tMenuMsg_AddItem        *req;
 101                 msg = AxWin3_int_AllocateIPCMessage(Menu, MSG_MENU_ADDITEM, 0, sizeof(*req)+strlen(Label));
 102                 req = (void*)msg->Data;
 103                 req->ID = ret->ID;
 104                 req->Flags = Flags;
 105                 req->SubMenuID = AxWin3_int_GetWindowID(SubMenu);
 106                 strcpy(req->Label, Label);
 107                 AxWin3_int_SendIPCMessage(msg);
 108                 free(msg);
 109         }
 110
 111         return ret;
 112 }