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      1 /* appinit.c -- Tcl and Tk application initialization.
      2 
      3    The function Tcl_AppInit() below initializes various Tcl packages.
      4    It is called for each Tcl interpreter created by _tkinter.create().
      5    It needs to be compiled with -DWITH_<package> flags for each package
      6    that you are statically linking with.  You may have to add sections
      7    for packages not yet listed below.
      8 
      9    Note that those packages for which Tcl_StaticPackage() is called with
     10    a NULL first argument are known as "static loadable" packages to
     11    Tcl but not actually initialized.  To use these, you have to load
     12    it explicitly, e.g. tkapp.eval("load {} Blt").
     13  */
     14 
     15 #include <string.h>
     16 #include <tcl.h>
     17 #include <tk.h>
     18 
     19 #include "tkinter.h"
     20 
     21 #ifdef TKINTER_PROTECT_LOADTK
     22 /* See Tkapp_TkInit in _tkinter.c for the usage of tk_load_faile */
     23 static int tk_load_failed;
     24 #endif
     25 
     26 int
     27 Tcl_AppInit(Tcl_Interp *interp)
     28 {
     29     const char *_tkinter_skip_tk_init;
     30 #ifdef TKINTER_PROTECT_LOADTK
     31     const char *_tkinter_tk_failed;
     32 #endif
     33 
     34 #ifdef TK_AQUA
     35 #ifndef MAX_PATH_LEN
     36 #define MAX_PATH_LEN 1024
     37 #endif
     38     char tclLibPath[MAX_PATH_LEN], tkLibPath[MAX_PATH_LEN];
     39     Tcl_Obj*            pathPtr;
     40 
     41     /* pre- Tcl_Init code copied from tkMacOSXAppInit.c */
     42     Tk_MacOSXOpenBundleResources (interp, "com.tcltk.tcllibrary",
     43     tclLibPath, MAX_PATH_LEN, 0);
     44 
     45     if (tclLibPath[0] != '\0') {
     46     Tcl_SetVar(interp, "tcl_library", tclLibPath, TCL_GLOBAL_ONLY);
     47         Tcl_SetVar(interp, "tclDefaultLibrary", tclLibPath, TCL_GLOBAL_ONLY);
     48         Tcl_SetVar(interp, "tcl_pkgPath", tclLibPath, TCL_GLOBAL_ONLY);
     49     }
     50 
     51     if (tclLibPath[0] != '\0') {
     52         Tcl_SetVar(interp, "tcl_library", tclLibPath, TCL_GLOBAL_ONLY);
     53         Tcl_SetVar(interp, "tclDefaultLibrary", tclLibPath, TCL_GLOBAL_ONLY);
     54         Tcl_SetVar(interp, "tcl_pkgPath", tclLibPath, TCL_GLOBAL_ONLY);
     55     }
     56 #endif
     57     if (Tcl_Init (interp) == TCL_ERROR)
     58         return TCL_ERROR;
     59 
     60 #ifdef TK_AQUA
     61     /* pre- Tk_Init code copied from tkMacOSXAppInit.c */
     62     Tk_MacOSXOpenBundleResources (interp, "com.tcltk.tklibrary",
     63         tkLibPath, MAX_PATH_LEN, 1);
     64 
     65     if (tclLibPath[0] != '\0') {
     66         pathPtr = Tcl_NewStringObj(tclLibPath, -1);
     67     } else {
     68         Tcl_Obj *pathPtr = TclGetLibraryPath();
     69     }
     70 
     71     if (tkLibPath[0] != '\0') {
     72         Tcl_Obj *objPtr;
     73 
     74         Tcl_SetVar(interp, "tk_library", tkLibPath, TCL_GLOBAL_ONLY);
     75         objPtr = Tcl_NewStringObj(tkLibPath, -1);
     76         Tcl_ListObjAppendElement(NULL, pathPtr, objPtr);
     77     }
     78 
     79     TclSetLibraryPath(pathPtr);
     80 #endif
     81 
     82 #ifdef WITH_XXX
     83         /* Initialize modules that don't require Tk */
     84 #endif
     85 
     86     _tkinter_skip_tk_init =     Tcl_GetVar(interp,
     87                     "_tkinter_skip_tk_init", TCL_GLOBAL_ONLY);
     88     if (_tkinter_skip_tk_init != NULL &&
     89                     strcmp(_tkinter_skip_tk_init, "1") == 0) {
     90         return TCL_OK;
     91     }
     92 
     93 #ifdef TKINTER_PROTECT_LOADTK
     94     _tkinter_tk_failed = Tcl_GetVar(interp,
     95                     "_tkinter_tk_failed", TCL_GLOBAL_ONLY);
     96 
     97     if (tk_load_failed || (
     98                             _tkinter_tk_failed != NULL &&
     99                             strcmp(_tkinter_tk_failed, "1") == 0)) {
    100         Tcl_SetResult(interp, TKINTER_LOADTK_ERRMSG, TCL_STATIC);
    101         return TCL_ERROR;
    102     }
    103 #endif
    104 
    105     if (Tk_Init(interp) == TCL_ERROR) {
    106 #ifdef TKINTER_PROTECT_LOADTK
    107         tk_load_failed = 1;
    108         Tcl_SetVar(interp, "_tkinter_tk_failed", "1", TCL_GLOBAL_ONLY);
    109 #endif
    110         return TCL_ERROR;
    111     }
    112 
    113     Tk_MainWindow(interp);
    114 
    115 #ifdef TK_AQUA
    116     TkMacOSXInitAppleEvents(interp);
    117     TkMacOSXInitMenus(interp);
    118 #endif
    119 
    120 #ifdef WITH_PIL /* 0.2b5 and later -- not yet released as of May 14 */
    121     {
    122         extern void TkImaging_Init(Tcl_Interp *);
    123         TkImaging_Init(interp);
    124         /* XXX TkImaging_Init() doesn't have the right return type */
    125         /*Tcl_StaticPackage(interp, "Imaging", TkImaging_Init, NULL);*/
    126     }
    127 #endif
    128 
    129 #ifdef WITH_PIL_OLD /* 0.2b4 and earlier */
    130     {
    131         extern void TkImaging_Init(void);
    132         /* XXX TkImaging_Init() doesn't have the right prototype */
    133         /*Tcl_StaticPackage(interp, "Imaging", TkImaging_Init, NULL);*/
    134     }
    135 #endif
    136 
    137 #ifdef WITH_TIX
    138     {
    139         extern int Tix_Init(Tcl_Interp *interp);
    140         extern int Tix_SafeInit(Tcl_Interp *interp);
    141         Tcl_StaticPackage(NULL, "Tix", Tix_Init, Tix_SafeInit);
    142     }
    143 #endif
    144 
    145 #ifdef WITH_BLT
    146     {
    147         extern int Blt_Init(Tcl_Interp *);
    148         extern int Blt_SafeInit(Tcl_Interp *);
    149         Tcl_StaticPackage(NULL, "Blt", Blt_Init, Blt_SafeInit);
    150     }
    151 #endif
    152 
    153 #ifdef WITH_TOGL
    154     {
    155         /* XXX I've heard rumors that this doesn't work */
    156         extern int Togl_Init(Tcl_Interp *);
    157         /* XXX Is there no Togl_SafeInit? */
    158         Tcl_StaticPackage(NULL, "Togl", Togl_Init, NULL);
    159     }
    160 #endif
    161 
    162 #ifdef WITH_XXX
    163 
    164 #endif
    165     return TCL_OK;
    166 }
    167