| 1 |
/* $Header$ */
|
| 2 |
|
| 3 |
/*
|
| 4 |
* tkObj.c --
|
| 5 |
*
|
| 6 |
* This file contains procedures that implement the common Tk object
|
| 7 |
* types
|
| 8 |
*
|
| 9 |
* Copyright (c) 1997 Sun Microsystems, Inc.
|
| 10 |
*
|
| 11 |
* 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.
|
| 13 |
*
|
| 14 |
* RCS: @(#) $Id: tkobj.c,v 1.1.1.1 2001/06/13 05:06:19 dtashley Exp $
|
| 15 |
*/
|
| 16 |
|
| 17 |
#include "tkInt.h"
|
| 18 |
|
| 19 |
/*
|
| 20 |
* The following structure is the internal representation for pixel objects.
|
| 21 |
*/
|
| 22 |
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| 23 |
typedef struct PixelRep {
|
| 24 |
double value;
|
| 25 |
int units;
|
| 26 |
Tk_Window tkwin;
|
| 27 |
int returnValue;
|
| 28 |
} PixelRep;
|
| 29 |
|
| 30 |
#define SIMPLE_PIXELREP(objPtr) \
|
| 31 |
((objPtr)->internalRep.twoPtrValue.ptr2 == 0)
|
| 32 |
|
| 33 |
#define SET_SIMPLEPIXEL(objPtr, intval) \
|
| 34 |
(objPtr)->internalRep.twoPtrValue.ptr1 = (VOID *) (intval); \
|
| 35 |
(objPtr)->internalRep.twoPtrValue.ptr2 = 0
|
| 36 |
|
| 37 |
#define GET_SIMPLEPIXEL(objPtr) \
|
| 38 |
((int) (objPtr)->internalRep.twoPtrValue.ptr1)
|
| 39 |
|
| 40 |
#define SET_COMPLEXPIXEL(objPtr, repPtr) \
|
| 41 |
(objPtr)->internalRep.twoPtrValue.ptr1 = 0; \
|
| 42 |
(objPtr)->internalRep.twoPtrValue.ptr2 = (VOID *) repPtr
|
| 43 |
|
| 44 |
#define GET_COMPLEXPIXEL(objPtr) \
|
| 45 |
((PixelRep *) (objPtr)->internalRep.twoPtrValue.ptr2)
|
| 46 |
|
| 47 |
|
| 48 |
/*
|
| 49 |
* The following structure is the internal representation for mm objects.
|
| 50 |
*/
|
| 51 |
|
| 52 |
typedef struct MMRep {
|
| 53 |
double value;
|
| 54 |
int units;
|
| 55 |
Tk_Window tkwin;
|
| 56 |
double returnValue;
|
| 57 |
} MMRep;
|
| 58 |
|
| 59 |
/*
|
| 60 |
* Prototypes for procedures defined later in this file:
|
| 61 |
*/
|
| 62 |
|
| 63 |
static void DupMMInternalRep _ANSI_ARGS_((Tcl_Obj *srcPtr,
|
| 64 |
Tcl_Obj *copyPtr));
|
| 65 |
static void DupPixelInternalRep _ANSI_ARGS_((Tcl_Obj *srcPtr,
|
| 66 |
Tcl_Obj *copyPtr));
|
| 67 |
static void FreeMMInternalRep _ANSI_ARGS_((Tcl_Obj *objPtr));
|
| 68 |
static void FreePixelInternalRep _ANSI_ARGS_((Tcl_Obj *objPtr));
|
| 69 |
static int SetMMFromAny _ANSI_ARGS_((Tcl_Interp *interp,
|
| 70 |
Tcl_Obj *objPtr));
|
| 71 |
static int SetPixelFromAny _ANSI_ARGS_((Tcl_Interp *interp,
|
| 72 |
Tcl_Obj *objPtr));
|
| 73 |
static int SetWindowFromAny _ANSI_ARGS_((Tcl_Interp *interp,
|
| 74 |
Tcl_Obj *objPtr));
|
| 75 |
|
| 76 |
/*
|
| 77 |
* The following structure defines the implementation of the "pixel"
|
| 78 |
* Tcl object, used for measuring distances. The pixel object remembers
|
| 79 |
* its initial display-independant settings.
|
| 80 |
*/
|
| 81 |
|
| 82 |
static Tcl_ObjType pixelObjType = {
|
| 83 |
"pixel", /* name */
|
| 84 |
FreePixelInternalRep, /* freeIntRepProc */
|
| 85 |
DupPixelInternalRep, /* dupIntRepProc */
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| 86 |
NULL, /* updateStringProc */
|
| 87 |
SetPixelFromAny /* setFromAnyProc */
|
| 88 |
};
|
| 89 |
|
| 90 |
/*
|
| 91 |
* The following structure defines the implementation of the "pixel"
|
| 92 |
* Tcl object, used for measuring distances. The pixel object remembers
|
| 93 |
* its initial display-independant settings.
|
| 94 |
*/
|
| 95 |
|
| 96 |
static Tcl_ObjType mmObjType = {
|
| 97 |
"mm", /* name */
|
| 98 |
FreeMMInternalRep, /* freeIntRepProc */
|
| 99 |
DupMMInternalRep, /* dupIntRepProc */
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| 100 |
NULL, /* updateStringProc */
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| 101 |
SetMMFromAny /* setFromAnyProc */
|
| 102 |
};
|
| 103 |
|
| 104 |
/*
|
| 105 |
* The following structure defines the implementation of the "window"
|
| 106 |
* Tcl object.
|
| 107 |
*/
|
| 108 |
|
| 109 |
static Tcl_ObjType windowObjType = {
|
| 110 |
"window", /* name */
|
| 111 |
(Tcl_FreeInternalRepProc *) NULL, /* freeIntRepProc */
|
| 112 |
(Tcl_DupInternalRepProc *) NULL, /* dupIntRepProc */
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| 113 |
NULL, /* updateStringProc */
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| 114 |
SetWindowFromAny /* setFromAnyProc */
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| 115 |
};
|
| 116 |
|
| 117 |
|
| 118 |
|
| 119 |
/*
|
| 120 |
*----------------------------------------------------------------------
|
| 121 |
*
|
| 122 |
* Tk_GetPixelsFromObj --
|
| 123 |
*
|
| 124 |
* Attempt to return a pixel value from the Tcl object "objPtr". If the
|
| 125 |
* object is not already a pixel value, an attempt will be made to convert
|
| 126 |
* it to one.
|
| 127 |
*
|
| 128 |
* Results:
|
| 129 |
* The return value is a standard Tcl object result. If an error occurs
|
| 130 |
* during conversion, an error message is left in the interpreter's
|
| 131 |
* result unless "interp" is NULL.
|
| 132 |
*
|
| 133 |
* Side effects:
|
| 134 |
* If the object is not already a pixel, the conversion will free
|
| 135 |
* any old internal representation.
|
| 136 |
*
|
| 137 |
*----------------------------------------------------------------------
|
| 138 |
*/
|
| 139 |
|
| 140 |
int
|
| 141 |
Tk_GetPixelsFromObj(interp, tkwin, objPtr, intPtr)
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| 142 |
Tcl_Interp *interp; /* Used for error reporting if not NULL. */
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| 143 |
Tk_Window tkwin;
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| 144 |
Tcl_Obj *objPtr; /* The object from which to get pixels. */
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| 145 |
int *intPtr; /* Place to store resulting pixels. */
|
| 146 |
{
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| 147 |
int result;
|
| 148 |
double d;
|
| 149 |
PixelRep *pixelPtr;
|
| 150 |
static double bias[] = {
|
| 151 |
1.0, 10.0, 25.4, 25.4 / 72.0
|
| 152 |
};
|
| 153 |
|
| 154 |
if (objPtr->typePtr != &pixelObjType) {
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| 155 |
result = SetPixelFromAny(interp, objPtr);
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| 156 |
if (result != TCL_OK) {
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return result;
|
| 158 |
}
|
| 159 |
}
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| 160 |
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| 161 |
if (SIMPLE_PIXELREP(objPtr)) {
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| 162 |
*intPtr = GET_SIMPLEPIXEL(objPtr);
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| 163 |
} else {
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pixelPtr = GET_COMPLEXPIXEL(objPtr);
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if (pixelPtr->tkwin != tkwin) {
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d = pixelPtr->value;
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| 167 |
if (pixelPtr->units >= 0) {
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| 168 |
d *= bias[pixelPtr->units] * WidthOfScreen(Tk_Screen(tkwin));
|
| 169 |
d /= WidthMMOfScreen(Tk_Screen(tkwin));
|
| 170 |
}
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| 171 |
if (d < 0) {
|
| 172 |
pixelPtr->returnValue = (int) (d - 0.5);
|
| 173 |
} else {
|
| 174 |
pixelPtr->returnValue = (int) (d + 0.5);
|
| 175 |
}
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| 176 |
pixelPtr->tkwin = tkwin;
|
| 177 |
}
|
| 178 |
*intPtr = pixelPtr->returnValue;
|
| 179 |
}
|
| 180 |
return TCL_OK;
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}
|
| 182 |
|
| 183 |
/*
|
| 184 |
*----------------------------------------------------------------------
|
| 185 |
*
|
| 186 |
* FreePixelInternalRep --
|
| 187 |
*
|
| 188 |
* Deallocate the storage associated with a pixel object's internal
|
| 189 |
* representation.
|
| 190 |
*
|
| 191 |
* Results:
|
| 192 |
* None.
|
| 193 |
*
|
| 194 |
* Side effects:
|
| 195 |
* Frees objPtr's internal representation and sets objPtr's
|
| 196 |
* internalRep to NULL.
|
| 197 |
*
|
| 198 |
*----------------------------------------------------------------------
|
| 199 |
*/
|
| 200 |
|
| 201 |
static void
|
| 202 |
FreePixelInternalRep(objPtr)
|
| 203 |
Tcl_Obj *objPtr; /* Pixel object with internal rep to free. */
|
| 204 |
{
|
| 205 |
PixelRep *pixelPtr;
|
| 206 |
|
| 207 |
if (!SIMPLE_PIXELREP(objPtr)) {
|
| 208 |
pixelPtr = GET_COMPLEXPIXEL(objPtr);
|
| 209 |
ckfree((char *) pixelPtr);
|
| 210 |
}
|
| 211 |
SET_SIMPLEPIXEL(objPtr, 0);
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| 212 |
}
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| 213 |
|
| 214 |
/*
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*----------------------------------------------------------------------
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| 216 |
*
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* DupPixelInternalRep --
|
| 218 |
*
|
| 219 |
* Initialize the internal representation of a pixel Tcl_Obj to a
|
| 220 |
* copy of the internal representation of an existing pixel object.
|
| 221 |
*
|
| 222 |
* Results:
|
| 223 |
* None.
|
| 224 |
*
|
| 225 |
* Side effects:
|
| 226 |
* copyPtr's internal rep is set to the pixel corresponding to
|
| 227 |
* srcPtr's internal rep.
|
| 228 |
*
|
| 229 |
*----------------------------------------------------------------------
|
| 230 |
*/
|
| 231 |
|
| 232 |
static void
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| 233 |
DupPixelInternalRep(srcPtr, copyPtr)
|
| 234 |
register Tcl_Obj *srcPtr; /* Object with internal rep to copy. */
|
| 235 |
register Tcl_Obj *copyPtr; /* Object with internal rep to set. */
|
| 236 |
{
|
| 237 |
PixelRep *oldPtr, *newPtr;
|
| 238 |
|
| 239 |
copyPtr->typePtr = srcPtr->typePtr;
|
| 240 |
|
| 241 |
if (SIMPLE_PIXELREP(srcPtr)) {
|
| 242 |
SET_SIMPLEPIXEL(copyPtr, GET_SIMPLEPIXEL(srcPtr));
|
| 243 |
} else {
|
| 244 |
oldPtr = GET_COMPLEXPIXEL(srcPtr);
|
| 245 |
newPtr = (PixelRep *) ckalloc(sizeof(PixelRep));
|
| 246 |
newPtr->value = oldPtr->value;
|
| 247 |
newPtr->units = oldPtr->units;
|
| 248 |
newPtr->tkwin = oldPtr->tkwin;
|
| 249 |
newPtr->returnValue = oldPtr->returnValue;
|
| 250 |
SET_COMPLEXPIXEL(copyPtr, newPtr);
|
| 251 |
}
|
| 252 |
}
|
| 253 |
|
| 254 |
/*
|
| 255 |
*----------------------------------------------------------------------
|
| 256 |
*
|
| 257 |
* SetPixelFromAny --
|
| 258 |
*
|
| 259 |
* Attempt to generate a pixel internal form for the Tcl object
|
| 260 |
* "objPtr".
|
| 261 |
*
|
| 262 |
* Results:
|
| 263 |
* The return value is a standard Tcl result. If an error occurs during
|
| 264 |
* conversion, an error message is left in the interpreter's result
|
| 265 |
* unless "interp" is NULL.
|
| 266 |
*
|
| 267 |
* Side effects:
|
| 268 |
* If no error occurs, a pixel representation of the object is
|
| 269 |
* stored internally and the type of "objPtr" is set to pixel.
|
| 270 |
*
|
| 271 |
*----------------------------------------------------------------------
|
| 272 |
*/
|
| 273 |
|
| 274 |
static int
|
| 275 |
SetPixelFromAny(interp, objPtr)
|
| 276 |
Tcl_Interp *interp; /* Used for error reporting if not NULL. */
|
| 277 |
Tcl_Obj *objPtr; /* The object to convert. */
|
| 278 |
{
|
| 279 |
Tcl_ObjType *typePtr;
|
| 280 |
char *string, *rest;
|
| 281 |
double d;
|
| 282 |
int i, units;
|
| 283 |
PixelRep *pixelPtr;
|
| 284 |
|
| 285 |
string = Tcl_GetStringFromObj(objPtr, NULL);
|
| 286 |
|
| 287 |
d = strtod(string, &rest);
|
| 288 |
if (rest == string) {
|
| 289 |
/*
|
| 290 |
* Must copy string before resetting the result in case a caller
|
| 291 |
* is trying to convert the interpreter's result to pixels.
|
| 292 |
*/
|
| 293 |
|
| 294 |
char buf[100];
|
| 295 |
|
| 296 |
error:
|
| 297 |
sprintf(buf, "bad screen distance \"%.50s\"", string);
|
| 298 |
Tcl_ResetResult(interp);
|
| 299 |
Tcl_AppendResult(interp, buf, NULL);
|
| 300 |
return TCL_ERROR;
|
| 301 |
}
|
| 302 |
while ((*rest != '\0') && isspace(UCHAR(*rest))) {
|
| 303 |
rest++;
|
| 304 |
}
|
| 305 |
switch (*rest) {
|
| 306 |
case '\0':
|
| 307 |
units = -1;
|
| 308 |
break;
|
| 309 |
|
| 310 |
case 'm':
|
| 311 |
units = 0;
|
| 312 |
break;
|
| 313 |
|
| 314 |
case 'c':
|
| 315 |
units = 1;
|
| 316 |
break;
|
| 317 |
|
| 318 |
case 'i':
|
| 319 |
units = 2;
|
| 320 |
break;
|
| 321 |
|
| 322 |
case 'p':
|
| 323 |
units = 3;
|
| 324 |
break;
|
| 325 |
|
| 326 |
default:
|
| 327 |
goto error;
|
| 328 |
}
|
| 329 |
|
| 330 |
/*
|
| 331 |
* Free the old internalRep before setting the new one.
|
| 332 |
*/
|
| 333 |
|
| 334 |
typePtr = objPtr->typePtr;
|
| 335 |
if ((typePtr != NULL) && (typePtr->freeIntRepProc != NULL)) {
|
| 336 |
(*typePtr->freeIntRepProc)(objPtr);
|
| 337 |
}
|
| 338 |
|
| 339 |
objPtr->typePtr = &pixelObjType;
|
| 340 |
|
| 341 |
i = (int) d;
|
| 342 |
if ((units < 0) && (i == d)) {
|
| 343 |
SET_SIMPLEPIXEL(objPtr, i);
|
| 344 |
} else {
|
| 345 |
pixelPtr = (PixelRep *) ckalloc(sizeof(PixelRep));
|
| 346 |
pixelPtr->value = d;
|
| 347 |
pixelPtr->units = units;
|
| 348 |
pixelPtr->tkwin = NULL;
|
| 349 |
pixelPtr->returnValue = i;
|
| 350 |
SET_COMPLEXPIXEL(objPtr, pixelPtr);
|
| 351 |
}
|
| 352 |
return TCL_OK;
|
| 353 |
}
|
| 354 |
|
| 355 |
/*
|
| 356 |
*----------------------------------------------------------------------
|
| 357 |
*
|
| 358 |
* Tk_GetMMFromObj --
|
| 359 |
*
|
| 360 |
* Attempt to return an mm value from the Tcl object "objPtr". If the
|
| 361 |
* object is not already an mm value, an attempt will be made to convert
|
| 362 |
* it to one.
|
| 363 |
*
|
| 364 |
* Results:
|
| 365 |
* The return value is a standard Tcl object result. If an error occurs
|
| 366 |
* during conversion, an error message is left in the interpreter's
|
| 367 |
* result unless "interp" is NULL.
|
| 368 |
*
|
| 369 |
* Side effects:
|
| 370 |
* If the object is not already a pixel, the conversion will free
|
| 371 |
* any old internal representation.
|
| 372 |
*
|
| 373 |
*----------------------------------------------------------------------
|
| 374 |
*/
|
| 375 |
|
| 376 |
int
|
| 377 |
Tk_GetMMFromObj(interp, tkwin, objPtr, doublePtr)
|
| 378 |
Tcl_Interp *interp; /* Used for error reporting if not NULL. */
|
| 379 |
Tk_Window tkwin;
|
| 380 |
Tcl_Obj *objPtr; /* The object from which to get mms. */
|
| 381 |
double *doublePtr; /* Place to store resulting millimeters. */
|
| 382 |
{
|
| 383 |
int result;
|
| 384 |
double d;
|
| 385 |
MMRep *mmPtr;
|
| 386 |
static double bias[] = {
|
| 387 |
10.0, 25.4, 1.0, 25.4 / 72.0
|
| 388 |
};
|
| 389 |
|
| 390 |
if (objPtr->typePtr != &mmObjType) {
|
| 391 |
result = SetMMFromAny(interp, objPtr);
|
| 392 |
if (result != TCL_OK) {
|
| 393 |
return result;
|
| 394 |
}
|
| 395 |
}
|
| 396 |
|
| 397 |
mmPtr = (MMRep *) objPtr->internalRep.otherValuePtr;
|
| 398 |
if (mmPtr->tkwin != tkwin) {
|
| 399 |
d = mmPtr->value;
|
| 400 |
if (mmPtr->units == -1) {
|
| 401 |
d /= WidthOfScreen(Tk_Screen(tkwin));
|
| 402 |
d *= WidthMMOfScreen(Tk_Screen(tkwin));
|
| 403 |
} else {
|
| 404 |
d *= bias[mmPtr->units];
|
| 405 |
}
|
| 406 |
mmPtr->tkwin = tkwin;
|
| 407 |
mmPtr->returnValue = d;
|
| 408 |
}
|
| 409 |
*doublePtr = mmPtr->returnValue;
|
| 410 |
|
| 411 |
return TCL_OK;
|
| 412 |
}
|
| 413 |
|
| 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 */
|
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