1 |
dashley |
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/* $Header$ */ |
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/* |
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* tkObj.c -- |
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* |
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* This file contains procedures that implement the common Tk object |
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* types |
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* |
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* Copyright (c) 1997 Sun Microsystems, Inc. |
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* |
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* See the file "license.terms" for information on usage and redistribution |
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* of this file, and for a DISCLAIMER OF ALL WARRANTIES. |
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* |
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* RCS: @(#) $Id: tkobj.c,v 1.1.1.1 2001/06/13 05:06:19 dtashley Exp $ |
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*/ |
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#include "tkInt.h" |
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/* |
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* The following structure is the internal representation for pixel objects. |
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*/ |
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typedef struct PixelRep { |
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double value; |
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int units; |
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Tk_Window tkwin; |
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int returnValue; |
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} PixelRep; |
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#define SIMPLE_PIXELREP(objPtr) \ |
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((objPtr)->internalRep.twoPtrValue.ptr2 == 0) |
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#define SET_SIMPLEPIXEL(objPtr, intval) \ |
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(objPtr)->internalRep.twoPtrValue.ptr1 = (VOID *) (intval); \ |
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(objPtr)->internalRep.twoPtrValue.ptr2 = 0 |
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#define GET_SIMPLEPIXEL(objPtr) \ |
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((int) (objPtr)->internalRep.twoPtrValue.ptr1) |
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#define SET_COMPLEXPIXEL(objPtr, repPtr) \ |
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(objPtr)->internalRep.twoPtrValue.ptr1 = 0; \ |
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(objPtr)->internalRep.twoPtrValue.ptr2 = (VOID *) repPtr |
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#define GET_COMPLEXPIXEL(objPtr) \ |
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((PixelRep *) (objPtr)->internalRep.twoPtrValue.ptr2) |
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/* |
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* The following structure is the internal representation for mm objects. |
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*/ |
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typedef struct MMRep { |
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double value; |
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int units; |
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Tk_Window tkwin; |
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double returnValue; |
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} MMRep; |
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/* |
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* Prototypes for procedures defined later in this file: |
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*/ |
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static void DupMMInternalRep _ANSI_ARGS_((Tcl_Obj *srcPtr, |
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Tcl_Obj *copyPtr)); |
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static void DupPixelInternalRep _ANSI_ARGS_((Tcl_Obj *srcPtr, |
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Tcl_Obj *copyPtr)); |
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static void FreeMMInternalRep _ANSI_ARGS_((Tcl_Obj *objPtr)); |
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static void FreePixelInternalRep _ANSI_ARGS_((Tcl_Obj *objPtr)); |
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static int SetMMFromAny _ANSI_ARGS_((Tcl_Interp *interp, |
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Tcl_Obj *objPtr)); |
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static int SetPixelFromAny _ANSI_ARGS_((Tcl_Interp *interp, |
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Tcl_Obj *objPtr)); |
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static int SetWindowFromAny _ANSI_ARGS_((Tcl_Interp *interp, |
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Tcl_Obj *objPtr)); |
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/* |
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* The following structure defines the implementation of the "pixel" |
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* Tcl object, used for measuring distances. The pixel object remembers |
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* its initial display-independant settings. |
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*/ |
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static Tcl_ObjType pixelObjType = { |
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"pixel", /* name */ |
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FreePixelInternalRep, /* freeIntRepProc */ |
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DupPixelInternalRep, /* dupIntRepProc */ |
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NULL, /* updateStringProc */ |
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SetPixelFromAny /* setFromAnyProc */ |
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}; |
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/* |
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* The following structure defines the implementation of the "pixel" |
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* Tcl object, used for measuring distances. The pixel object remembers |
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* its initial display-independant settings. |
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*/ |
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static Tcl_ObjType mmObjType = { |
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"mm", /* name */ |
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FreeMMInternalRep, /* freeIntRepProc */ |
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DupMMInternalRep, /* dupIntRepProc */ |
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NULL, /* updateStringProc */ |
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SetMMFromAny /* setFromAnyProc */ |
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}; |
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/* |
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* The following structure defines the implementation of the "window" |
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* Tcl object. |
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*/ |
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static Tcl_ObjType windowObjType = { |
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"window", /* name */ |
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(Tcl_FreeInternalRepProc *) NULL, /* freeIntRepProc */ |
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(Tcl_DupInternalRepProc *) NULL, /* dupIntRepProc */ |
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NULL, /* updateStringProc */ |
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SetWindowFromAny /* setFromAnyProc */ |
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}; |
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/* |
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*---------------------------------------------------------------------- |
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* |
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* Tk_GetPixelsFromObj -- |
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* |
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* Attempt to return a pixel value from the Tcl object "objPtr". If the |
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* object is not already a pixel value, an attempt will be made to convert |
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* it to one. |
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* |
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* Results: |
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* The return value is a standard Tcl object result. If an error occurs |
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* during conversion, an error message is left in the interpreter's |
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* result unless "interp" is NULL. |
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* |
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* Side effects: |
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* If the object is not already a pixel, the conversion will free |
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* any old internal representation. |
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* |
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*---------------------------------------------------------------------- |
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*/ |
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140 |
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int |
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Tk_GetPixelsFromObj(interp, tkwin, objPtr, intPtr) |
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Tcl_Interp *interp; /* Used for error reporting if not NULL. */ |
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Tk_Window tkwin; |
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Tcl_Obj *objPtr; /* The object from which to get pixels. */ |
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int *intPtr; /* Place to store resulting pixels. */ |
146 |
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{ |
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int result; |
148 |
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double d; |
149 |
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PixelRep *pixelPtr; |
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static double bias[] = { |
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1.0, 10.0, 25.4, 25.4 / 72.0 |
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}; |
153 |
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154 |
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if (objPtr->typePtr != &pixelObjType) { |
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result = SetPixelFromAny(interp, objPtr); |
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if (result != TCL_OK) { |
157 |
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return result; |
158 |
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} |
159 |
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} |
160 |
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161 |
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if (SIMPLE_PIXELREP(objPtr)) { |
162 |
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*intPtr = GET_SIMPLEPIXEL(objPtr); |
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} else { |
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pixelPtr = GET_COMPLEXPIXEL(objPtr); |
165 |
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if (pixelPtr->tkwin != tkwin) { |
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d = pixelPtr->value; |
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if (pixelPtr->units >= 0) { |
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d *= bias[pixelPtr->units] * WidthOfScreen(Tk_Screen(tkwin)); |
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d /= WidthMMOfScreen(Tk_Screen(tkwin)); |
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} |
171 |
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if (d < 0) { |
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pixelPtr->returnValue = (int) (d - 0.5); |
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} else { |
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pixelPtr->returnValue = (int) (d + 0.5); |
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} |
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pixelPtr->tkwin = tkwin; |
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} |
178 |
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*intPtr = pixelPtr->returnValue; |
179 |
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} |
180 |
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return TCL_OK; |
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} |
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183 |
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/* |
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*---------------------------------------------------------------------- |
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* |
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* FreePixelInternalRep -- |
187 |
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* |
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* Deallocate the storage associated with a pixel object's internal |
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* representation. |
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* |
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* Results: |
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* None. |
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* |
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* Side effects: |
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* Frees objPtr's internal representation and sets objPtr's |
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* internalRep to NULL. |
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* |
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*---------------------------------------------------------------------- |
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*/ |
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static void |
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FreePixelInternalRep(objPtr) |
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Tcl_Obj *objPtr; /* Pixel object with internal rep to free. */ |
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{ |
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PixelRep *pixelPtr; |
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207 |
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if (!SIMPLE_PIXELREP(objPtr)) { |
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pixelPtr = GET_COMPLEXPIXEL(objPtr); |
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ckfree((char *) pixelPtr); |
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} |
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SET_SIMPLEPIXEL(objPtr, 0); |
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} |
213 |
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214 |
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/* |
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*---------------------------------------------------------------------- |
216 |
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* |
217 |
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* DupPixelInternalRep -- |
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* |
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* Initialize the internal representation of a pixel Tcl_Obj to a |
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* copy of the internal representation of an existing pixel object. |
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* |
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* Results: |
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* None. |
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* |
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* Side effects: |
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* copyPtr's internal rep is set to the pixel corresponding to |
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* srcPtr's internal rep. |
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* |
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*---------------------------------------------------------------------- |
230 |
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*/ |
231 |
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232 |
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static void |
233 |
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DupPixelInternalRep(srcPtr, copyPtr) |
234 |
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register Tcl_Obj *srcPtr; /* Object with internal rep to copy. */ |
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register Tcl_Obj *copyPtr; /* Object with internal rep to set. */ |
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{ |
237 |
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PixelRep *oldPtr, *newPtr; |
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239 |
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copyPtr->typePtr = srcPtr->typePtr; |
240 |
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241 |
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if (SIMPLE_PIXELREP(srcPtr)) { |
242 |
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SET_SIMPLEPIXEL(copyPtr, GET_SIMPLEPIXEL(srcPtr)); |
243 |
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} else { |
244 |
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oldPtr = GET_COMPLEXPIXEL(srcPtr); |
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newPtr = (PixelRep *) ckalloc(sizeof(PixelRep)); |
246 |
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newPtr->value = oldPtr->value; |
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newPtr->units = oldPtr->units; |
248 |
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newPtr->tkwin = oldPtr->tkwin; |
249 |
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newPtr->returnValue = oldPtr->returnValue; |
250 |
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SET_COMPLEXPIXEL(copyPtr, newPtr); |
251 |
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} |
252 |
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} |
253 |
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254 |
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/* |
255 |
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*---------------------------------------------------------------------- |
256 |
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* |
257 |
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* SetPixelFromAny -- |
258 |
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* |
259 |
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* Attempt to generate a pixel internal form for the Tcl object |
260 |
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* "objPtr". |
261 |
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* |
262 |
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* Results: |
263 |
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* The return value is a standard Tcl result. If an error occurs during |
264 |
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* conversion, an error message is left in the interpreter's result |
265 |
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* unless "interp" is NULL. |
266 |
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* |
267 |
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* Side effects: |
268 |
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* If no error occurs, a pixel representation of the object is |
269 |
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* stored internally and the type of "objPtr" is set to pixel. |
270 |
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* |
271 |
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*---------------------------------------------------------------------- |
272 |
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*/ |
273 |
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274 |
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static int |
275 |
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SetPixelFromAny(interp, objPtr) |
276 |
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Tcl_Interp *interp; /* Used for error reporting if not NULL. */ |
277 |
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Tcl_Obj *objPtr; /* The object to convert. */ |
278 |
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{ |
279 |
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Tcl_ObjType *typePtr; |
280 |
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char *string, *rest; |
281 |
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double d; |
282 |
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int i, units; |
283 |
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PixelRep *pixelPtr; |
284 |
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285 |
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string = Tcl_GetStringFromObj(objPtr, NULL); |
286 |
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287 |
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d = strtod(string, &rest); |
288 |
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if (rest == string) { |
289 |
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/* |
290 |
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* Must copy string before resetting the result in case a caller |
291 |
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* is trying to convert the interpreter's result to pixels. |
292 |
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*/ |
293 |
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294 |
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char buf[100]; |
295 |
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296 |
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error: |
297 |
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sprintf(buf, "bad screen distance \"%.50s\"", string); |
298 |
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Tcl_ResetResult(interp); |
299 |
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Tcl_AppendResult(interp, buf, NULL); |
300 |
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return TCL_ERROR; |
301 |
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} |
302 |
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while ((*rest != '\0') && isspace(UCHAR(*rest))) { |
303 |
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rest++; |
304 |
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} |
305 |
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switch (*rest) { |
306 |
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case '\0': |
307 |
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units = -1; |
308 |
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break; |
309 |
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310 |
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case 'm': |
311 |
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units = 0; |
312 |
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break; |
313 |
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314 |
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case 'c': |
315 |
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units = 1; |
316 |
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break; |
317 |
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318 |
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case 'i': |
319 |
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units = 2; |
320 |
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break; |
321 |
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322 |
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case 'p': |
323 |
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units = 3; |
324 |
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break; |
325 |
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326 |
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default: |
327 |
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goto error; |
328 |
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} |
329 |
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330 |
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/* |
331 |
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* Free the old internalRep before setting the new one. |
332 |
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*/ |
333 |
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334 |
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typePtr = objPtr->typePtr; |
335 |
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if ((typePtr != NULL) && (typePtr->freeIntRepProc != NULL)) { |
336 |
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(*typePtr->freeIntRepProc)(objPtr); |
337 |
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} |
338 |
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339 |
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objPtr->typePtr = &pixelObjType; |
340 |
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341 |
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i = (int) d; |
342 |
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if ((units < 0) && (i == d)) { |
343 |
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SET_SIMPLEPIXEL(objPtr, i); |
344 |
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} else { |
345 |
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pixelPtr = (PixelRep *) ckalloc(sizeof(PixelRep)); |
346 |
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pixelPtr->value = d; |
347 |
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pixelPtr->units = units; |
348 |
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pixelPtr->tkwin = NULL; |
349 |
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pixelPtr->returnValue = i; |
350 |
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SET_COMPLEXPIXEL(objPtr, pixelPtr); |
351 |
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} |
352 |
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return TCL_OK; |
353 |
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} |
354 |
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|
355 |
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/* |
356 |
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*---------------------------------------------------------------------- |
357 |
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* |
358 |
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* Tk_GetMMFromObj -- |
359 |
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* |
360 |
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* Attempt to return an mm value from the Tcl object "objPtr". If the |
361 |
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* object is not already an mm value, an attempt will be made to convert |
362 |
|
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* it to one. |
363 |
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|
* |
364 |
|
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* Results: |
365 |
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* The return value is a standard Tcl object result. If an error occurs |
366 |
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|
* during conversion, an error message is left in the interpreter's |
367 |
|
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* result unless "interp" is NULL. |
368 |
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|
* |
369 |
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* Side effects: |
370 |
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* If the object is not already a pixel, the conversion will free |
371 |
|
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* any old internal representation. |
372 |
|
|
* |
373 |
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*---------------------------------------------------------------------- |
374 |
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*/ |
375 |
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|
376 |
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int |
377 |
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Tk_GetMMFromObj(interp, tkwin, objPtr, doublePtr) |
378 |
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Tcl_Interp *interp; /* Used for error reporting if not NULL. */ |
379 |
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Tk_Window tkwin; |
380 |
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Tcl_Obj *objPtr; /* The object from which to get mms. */ |
381 |
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double *doublePtr; /* Place to store resulting millimeters. */ |
382 |
|
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{ |
383 |
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int result; |
384 |
|
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double d; |
385 |
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MMRep *mmPtr; |
386 |
|
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static double bias[] = { |
387 |
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10.0, 25.4, 1.0, 25.4 / 72.0 |
388 |
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}; |
389 |
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|
390 |
|
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if (objPtr->typePtr != &mmObjType) { |
391 |
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result = SetMMFromAny(interp, objPtr); |
392 |
|
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if (result != TCL_OK) { |
393 |
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return result; |
394 |
|
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} |
395 |
|
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} |
396 |
|
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|
397 |
|
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mmPtr = (MMRep *) objPtr->internalRep.otherValuePtr; |
398 |
|
|
if (mmPtr->tkwin != tkwin) { |
399 |
|
|
d = mmPtr->value; |
400 |
|
|
if (mmPtr->units == -1) { |
401 |
|
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d /= WidthOfScreen(Tk_Screen(tkwin)); |
402 |
|
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d *= WidthMMOfScreen(Tk_Screen(tkwin)); |
403 |
|
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} else { |
404 |
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d *= bias[mmPtr->units]; |
405 |
|
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} |
406 |
|
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mmPtr->tkwin = tkwin; |
407 |
|
|
mmPtr->returnValue = d; |
408 |
|
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} |
409 |
|
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*doublePtr = mmPtr->returnValue; |
410 |
|
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|
411 |
|
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return TCL_OK; |
412 |
|
|
} |
413 |
|
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|
414 |
|
|
/* |
415 |
|
|
*---------------------------------------------------------------------- |
416 |
|
|
* |
417 |
|
|
* FreeMMInternalRep -- |
418 |
|
|
* |
419 |
|
|
* Deallocate the storage associated with a mm object's internal |
420 |
|
|
* representation. |
421 |
|
|
* |
422 |
|
|
* Results: |
423 |
|
|
* None. |
424 |
|
|
* |
425 |
|
|
* Side effects: |
426 |
|
|
* Frees objPtr's internal representation and sets objPtr's |
427 |
|
|
* internalRep to NULL. |
428 |
|
|
* |
429 |
|
|
*---------------------------------------------------------------------- |
430 |
|
|
*/ |
431 |
|
|
|
432 |
|
|
static void |
433 |
|
|
FreeMMInternalRep(objPtr) |
434 |
|
|
Tcl_Obj *objPtr; /* MM object with internal rep to free. */ |
435 |
|
|
{ |
436 |
|
|
ckfree((char *) objPtr->internalRep.otherValuePtr); |
437 |
|
|
objPtr->internalRep.otherValuePtr = NULL; |
438 |
|
|
} |
439 |
|
|
|
440 |
|
|
/* |
441 |
|
|
*---------------------------------------------------------------------- |
442 |
|
|
* |
443 |
|
|
* DupMMInternalRep -- |
444 |
|
|
* |
445 |
|
|
* Initialize the internal representation of a pixel Tcl_Obj to a |
446 |
|
|
* copy of the internal representation of an existing pixel object. |
447 |
|
|
* |
448 |
|
|
* Results: |
449 |
|
|
* None. |
450 |
|
|
* |
451 |
|
|
* Side effects: |
452 |
|
|
* copyPtr's internal rep is set to the pixel corresponding to |
453 |
|
|
* srcPtr's internal rep. |
454 |
|
|
* |
455 |
|
|
*---------------------------------------------------------------------- |
456 |
|
|
*/ |
457 |
|
|
|
458 |
|
|
static void |
459 |
|
|
DupMMInternalRep(srcPtr, copyPtr) |
460 |
|
|
register Tcl_Obj *srcPtr; /* Object with internal rep to copy. */ |
461 |
|
|
register Tcl_Obj *copyPtr; /* Object with internal rep to set. */ |
462 |
|
|
{ |
463 |
|
|
MMRep *oldPtr, *newPtr; |
464 |
|
|
|
465 |
|
|
copyPtr->typePtr = srcPtr->typePtr; |
466 |
|
|
oldPtr = (MMRep *) srcPtr->internalRep.otherValuePtr; |
467 |
|
|
newPtr = (MMRep *) ckalloc(sizeof(MMRep)); |
468 |
|
|
newPtr->value = oldPtr->value; |
469 |
|
|
newPtr->units = oldPtr->units; |
470 |
|
|
newPtr->tkwin = oldPtr->tkwin; |
471 |
|
|
newPtr->returnValue = oldPtr->returnValue; |
472 |
|
|
copyPtr->internalRep.otherValuePtr = (VOID *) newPtr; |
473 |
|
|
} |
474 |
|
|
|
475 |
|
|
/* |
476 |
|
|
*---------------------------------------------------------------------- |
477 |
|
|
* |
478 |
|
|
* SetMMFromAny -- |
479 |
|
|
* |
480 |
|
|
* Attempt to generate a mm internal form for the Tcl object |
481 |
|
|
* "objPtr". |
482 |
|
|
* |
483 |
|
|
* Results: |
484 |
|
|
* The return value is a standard Tcl result. If an error occurs during |
485 |
|
|
* conversion, an error message is left in the interpreter's result |
486 |
|
|
* unless "interp" is NULL. |
487 |
|
|
* |
488 |
|
|
* Side effects: |
489 |
|
|
* If no error occurs, a mm representation of the object is |
490 |
|
|
* stored internally and the type of "objPtr" is set to mm. |
491 |
|
|
* |
492 |
|
|
*---------------------------------------------------------------------- |
493 |
|
|
*/ |
494 |
|
|
|
495 |
|
|
static int |
496 |
|
|
SetMMFromAny(interp, objPtr) |
497 |
|
|
Tcl_Interp *interp; /* Used for error reporting if not NULL. */ |
498 |
|
|
Tcl_Obj *objPtr; /* The object to convert. */ |
499 |
|
|
{ |
500 |
|
|
Tcl_ObjType *typePtr; |
501 |
|
|
char *string, *rest; |
502 |
|
|
double d; |
503 |
|
|
int units; |
504 |
|
|
MMRep *mmPtr; |
505 |
|
|
|
506 |
|
|
string = Tcl_GetStringFromObj(objPtr, NULL); |
507 |
|
|
|
508 |
|
|
d = strtod(string, &rest); |
509 |
|
|
if (rest == string) { |
510 |
|
|
/* |
511 |
|
|
* Must copy string before resetting the result in case a caller |
512 |
|
|
* is trying to convert the interpreter's result to mms. |
513 |
|
|
*/ |
514 |
|
|
|
515 |
|
|
error: |
516 |
|
|
Tcl_AppendResult(interp, "bad screen distance \"", string, |
517 |
|
|
"\"", (char *) NULL); |
518 |
|
|
return TCL_ERROR; |
519 |
|
|
} |
520 |
|
|
while ((*rest != '\0') && isspace(UCHAR(*rest))) { |
521 |
|
|
rest++; |
522 |
|
|
} |
523 |
|
|
switch (*rest) { |
524 |
|
|
case '\0': |
525 |
|
|
units = -1; |
526 |
|
|
break; |
527 |
|
|
|
528 |
|
|
case 'c': |
529 |
|
|
units = 0; |
530 |
|
|
break; |
531 |
|
|
|
532 |
|
|
case 'i': |
533 |
|
|
units = 1; |
534 |
|
|
break; |
535 |
|
|
|
536 |
|
|
case 'm': |
537 |
|
|
units = 2; |
538 |
|
|
break; |
539 |
|
|
|
540 |
|
|
case 'p': |
541 |
|
|
units = 3; |
542 |
|
|
break; |
543 |
|
|
|
544 |
|
|
default: |
545 |
|
|
goto error; |
546 |
|
|
} |
547 |
|
|
|
548 |
|
|
/* |
549 |
|
|
* Free the old internalRep before setting the new one. |
550 |
|
|
*/ |
551 |
|
|
|
552 |
|
|
typePtr = objPtr->typePtr; |
553 |
|
|
if ((typePtr != NULL) && (typePtr->freeIntRepProc != NULL)) { |
554 |
|
|
(*typePtr->freeIntRepProc)(objPtr); |
555 |
|
|
} |
556 |
|
|
|
557 |
|
|
objPtr->typePtr = &mmObjType; |
558 |
|
|
|
559 |
|
|
mmPtr = (MMRep *) ckalloc(sizeof(MMRep)); |
560 |
|
|
mmPtr->value = d; |
561 |
|
|
mmPtr->units = units; |
562 |
|
|
mmPtr->tkwin = NULL; |
563 |
|
|
mmPtr->returnValue = d; |
564 |
|
|
objPtr->internalRep.otherValuePtr = (VOID *) mmPtr; |
565 |
|
|
return TCL_OK; |
566 |
|
|
} |
567 |
|
|
|
568 |
|
|
/* |
569 |
|
|
*---------------------------------------------------------------------- |
570 |
|
|
* |
571 |
|
|
* TkGetWindowFromObj -- |
572 |
|
|
* |
573 |
|
|
* Attempt to return a Tk_Window from the Tcl object "objPtr". If the |
574 |
|
|
* object is not already a Tk_Window, an attempt will be made to convert |
575 |
|
|
* it to one. |
576 |
|
|
* |
577 |
|
|
* Results: |
578 |
|
|
* The return value is a standard Tcl object result. If an error occurs |
579 |
|
|
* during conversion, an error message is left in the interpreter's |
580 |
|
|
* result unless "interp" is NULL. |
581 |
|
|
* |
582 |
|
|
* Side effects: |
583 |
|
|
* If the object is not already a Tk_Window, the conversion will free |
584 |
|
|
* any old internal representation. |
585 |
|
|
* |
586 |
|
|
*---------------------------------------------------------------------- |
587 |
|
|
*/ |
588 |
|
|
|
589 |
|
|
int |
590 |
|
|
TkGetWindowFromObj(interp, tkwin, objPtr, windowPtr) |
591 |
|
|
Tcl_Interp *interp; /* Used for error reporting if not NULL. */ |
592 |
|
|
Tk_Window tkwin; /* A token to get the main window from. */ |
593 |
|
|
register Tcl_Obj *objPtr; /* The object from which to get boolean. */ |
594 |
|
|
Tk_Window *windowPtr; /* Place to store resulting window. */ |
595 |
|
|
{ |
596 |
|
|
register int result; |
597 |
|
|
Tk_Window lastWindow; |
598 |
|
|
|
599 |
|
|
result = SetWindowFromAny(interp, objPtr); |
600 |
|
|
if (result != TCL_OK) { |
601 |
|
|
return result; |
602 |
|
|
} |
603 |
|
|
|
604 |
|
|
lastWindow = (Tk_Window) objPtr->internalRep.twoPtrValue.ptr1; |
605 |
|
|
if (tkwin != lastWindow) { |
606 |
|
|
Tk_Window foundWindow = Tk_NameToWindow(interp, |
607 |
|
|
Tcl_GetStringFromObj(objPtr, NULL), tkwin); |
608 |
|
|
|
609 |
|
|
if (foundWindow == NULL) { |
610 |
|
|
return TCL_ERROR; |
611 |
|
|
} |
612 |
|
|
objPtr->internalRep.twoPtrValue.ptr1 = (VOID *) tkwin; |
613 |
|
|
objPtr->internalRep.twoPtrValue.ptr2 = (VOID *) foundWindow; |
614 |
|
|
} |
615 |
|
|
*windowPtr = (Tk_Window) objPtr->internalRep.twoPtrValue.ptr2; |
616 |
|
|
|
617 |
|
|
return result; |
618 |
|
|
} |
619 |
|
|
|
620 |
|
|
/* |
621 |
|
|
*---------------------------------------------------------------------- |
622 |
|
|
* |
623 |
|
|
* SetWindowFromAny -- |
624 |
|
|
* |
625 |
|
|
* Attempt to generate a Tk_Window internal form for the Tcl object |
626 |
|
|
* "objPtr". |
627 |
|
|
* |
628 |
|
|
* Results: |
629 |
|
|
* The return value is a standard Tcl result. If an error occurs during |
630 |
|
|
* conversion, an error message is left in the interpreter's result |
631 |
|
|
* unless "interp" is NULL. |
632 |
|
|
* |
633 |
|
|
* Side effects: |
634 |
|
|
* If no error occurs, a standard window value is stored as "objPtr"s |
635 |
|
|
* internal representation and the type of "objPtr" is set to Tk_Window. |
636 |
|
|
* |
637 |
|
|
*---------------------------------------------------------------------- |
638 |
|
|
*/ |
639 |
|
|
|
640 |
|
|
static int |
641 |
|
|
SetWindowFromAny(interp, objPtr) |
642 |
|
|
Tcl_Interp *interp; /* Used for error reporting if not NULL. */ |
643 |
|
|
register Tcl_Obj *objPtr; /* The object to convert. */ |
644 |
|
|
{ |
645 |
|
|
Tcl_ObjType *typePtr; |
646 |
|
|
|
647 |
|
|
/* |
648 |
|
|
* Free the old internalRep before setting the new one. |
649 |
|
|
*/ |
650 |
|
|
|
651 |
|
|
Tcl_GetStringFromObj(objPtr, NULL); |
652 |
|
|
typePtr = objPtr->typePtr; |
653 |
|
|
if ((typePtr != NULL) && (typePtr->freeIntRepProc != NULL)) { |
654 |
|
|
(*typePtr->freeIntRepProc)(objPtr); |
655 |
|
|
} |
656 |
|
|
objPtr->typePtr = &windowObjType; |
657 |
|
|
objPtr->internalRep.twoPtrValue.ptr1 = NULL; |
658 |
|
|
objPtr->internalRep.twoPtrValue.ptr2 = NULL; |
659 |
|
|
|
660 |
|
|
return TCL_OK; |
661 |
|
|
} |
662 |
|
|
|
663 |
|
|
/* End of tkobj.c */ |