components/x11/libXaw5/src/Label.c

   1 /* $XConsortium: Label.c,v 1.97 94/04/17 20:12:12 kaleb Exp $ */
   2
   3 /***********************************************************
   4
   5 Copyright (c) 1987, 1988, 1994  X Consortium
   6
   7 Permission is hereby granted, free of charge, to any person obtaining a copy
   8 of this software and associated documentation files (the "Software"), to deal
   9 in the Software without restriction, including without limitation the rights
  10 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  11 copies of the Software, and to permit persons to whom the Software is
  12 furnished to do so, subject to the following conditions:
  13
  14 The above copyright notice and this permission notice shall be included in
  15 all copies or substantial portions of the Software.
  16
  17 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
  20 X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  21 AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  22 CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  23
  24 Except as contained in this notice, the name of the X Consortium shall not be
  25 used in advertising or otherwise to promote the sale, use or other dealings
  26 in this Software without prior written authorization from the X Consortium.
  27
  28
  29 Copyright 1987, 1988 by Digital Equipment Corporation, Maynard, Massachusetts.
  30
  31                         All Rights Reserved
  32
  33 Permission to use, copy, modify, and distribute this software and its
  34 documentation for any purpose and without fee is hereby granted,
  35 provided that the above copyright notice appear in all copies and that
  36 both that copyright notice and this permission notice appear in
  37 supporting documentation, and that the name of Digital not be
  38 used in advertising or publicity pertaining to distribution of the
  39 software without specific, written prior permission.
  40
  41 DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
  42 ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
  43 DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
  44 ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
  45 WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
  46 ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
  47 SOFTWARE.
  48
  49 ******************************************************************/
  50
  51 /*
  52  * Label.c - Label widget
  53  *
  54  */
  55
  56 #include <X11/IntrinsicP.h>
  57 #include <X11/StringDefs.h>
  58 #include <X11/Xos.h>
  59 #include <X11/Xaw/XawInit.h>
  60 #include <X11/Xaw/LabelP.h>
  61 #include <X11/Xmu/Converters.h>
  62 #include <X11/Xmu/Drawing.h>
  63 #include <stdio.h>
  64 #include <ctype.h>
  65
  66 /* needed for abs() */
  67 #ifdef _LP64
  68 #include <stdlib.h>
  69 #else  /* _LP64 */
  70 #ifndef X_NOT_STDC_ENV
  71 #include <stdlib.h>
  72 #else
  73 int abs();
  74 #endif
  75 #endif /* _LP64 */
  76
  77 #define streq(a,b) (strcmp( (a), (b) ) == 0)
  78
  79 #define MULTI_LINE_LABEL 32767
  80
  81 #ifdef CRAY
  82 #define WORD64
  83 #endif
  84
  85 /****************************************************************
  86  *
  87  * Full class record constant
  88  *
  89  ****************************************************************/
  90
  91 /* Private Data */
  92
  93 #define offset(field) XtOffsetOf(LabelRec, field)
  94 static XtResource resources[] = {
  95     {XtNforeground, XtCForeground, XtRPixel, sizeof(Pixel),
  96         offset(label.foreground), XtRString, XtDefaultForeground},
  97     {XtNfont,  XtCFont, XtRFontStruct, sizeof(XFontStruct *),
  98         offset(label.font),XtRString, XtDefaultFont},
  99     {XtNfontSet,  XtCFontSet, XtRFontSet, sizeof(XFontSet ),
 100         offset(label.fontset),XtRString, XtDefaultFontSet},
 101     {XtNlabel,  XtCLabel, XtRString, sizeof(String),
 102         offset(label.label), XtRString, NULL},
 103     {XtNencoding, XtCEncoding, XtRUnsignedChar, sizeof(unsigned char),
 104         offset(label.encoding), XtRImmediate, (XtPointer)XawTextEncoding8bit},
 105     {XtNjustify, XtCJustify, XtRJustify, sizeof(XtJustify),
 106         offset(label.justify), XtRImmediate, (XtPointer)XtJustifyCenter},
 107     {XtNinternalWidth, XtCWidth, XtRDimension,  sizeof(Dimension),
 108         offset(label.internal_width), XtRImmediate, (XtPointer)4},
 109     {XtNinternalHeight, XtCHeight, XtRDimension, sizeof(Dimension),
 110         offset(label.internal_height), XtRImmediate, (XtPointer)2},
 111     {XtNleftBitmap, XtCLeftBitmap, XtRBitmap, sizeof(Pixmap),
 112        offset(label.left_bitmap), XtRImmediate, (XtPointer) None},
 113     {XtNbitmap, XtCPixmap, XtRBitmap, sizeof(Pixmap),
 114         offset(label.pixmap), XtRImmediate, (XtPointer)None},
 115     {XtNresize, XtCResize, XtRBoolean, sizeof(Boolean),
 116         offset(label.resize), XtRImmediate, (XtPointer)True},
 117 };
 118 #undef offset
 119
 120 static void Initialize();
 121 static void Resize();
 122 static void Redisplay();
 123 static Boolean SetValues();
 124 static void ClassInitialize();
 125 static void Destroy();
 126 static XtGeometryResult QueryGeometry();
 127
 128 LabelClassRec labelClassRec = {
 129   {
 130 /* core_class fields */
 131     /* superclass               */      (WidgetClass) &simpleClassRec,
 132     /* class_name               */      "Label",
 133     /* widget_size              */      sizeof(LabelRec),
 134     /* class_initialize         */      ClassInitialize,
 135     /* class_part_initialize    */      NULL,
 136     /* class_inited             */      FALSE,
 137     /* initialize               */      Initialize,
 138     /* initialize_hook          */      NULL,
 139     /* realize                  */      XtInheritRealize,
 140     /* actions                  */      NULL,
 141     /* num_actions              */      0,
 142     /* resources                */      resources,
 143     /* num_resources            */      XtNumber(resources),
 144     /* xrm_class                */      NULLQUARK,
 145     /* compress_motion          */      TRUE,
 146     /* compress_exposure        */      TRUE,
 147     /* compress_enterleave      */      TRUE,
 148     /* visible_interest         */      FALSE,
 149     /* destroy                  */      Destroy,
 150     /* resize                   */      Resize,
 151     /* expose                   */      Redisplay,
 152     /* set_values               */      SetValues,
 153     /* set_values_hook          */      NULL,
 154     /* set_values_almost        */      XtInheritSetValuesAlmost,
 155     /* get_values_hook          */      NULL,
 156     /* accept_focus             */      NULL,
 157     /* version                  */      XtVersion,
 158     /* callback_private         */      NULL,
 159     /* tm_table                 */      NULL,
 160     /* query_geometry           */      QueryGeometry,
 161     /* display_accelerator      */      XtInheritDisplayAccelerator,
 162     /* extension                */      NULL
 163   },
 164 /* Simple class fields initialization */
 165   {
 166     /* change_sensitive         */      XtInheritChangeSensitive
 167   },
 168 /* Label class fields initialization */
 169   {
 170     /* ignore                   */      0
 171   }
 172 };
 173 WidgetClass labelWidgetClass = (WidgetClass)&labelClassRec;
 174 /****************************************************************
 175  *
 176  * Private Procedures
 177  *
 178  ****************************************************************/
 179
 180 static void ClassInitialize()
 181 {
 182     XawInitializeWidgetSet();
 183     XtAddConverter( XtRString, XtRJustify, XmuCvtStringToJustify,
 184                     (XtConvertArgList)NULL, 0 );
 185 }
 186
 187 #ifndef WORD64
 188
 189 #define TXT16 XChar2b
 190
 191 #else
 192
 193 #define TXT16 char
 194
 195 static XChar2b *buf2b;
 196 static int buf2blen = 0;
 197
 198 _XawLabelWidth16(fs, str, n)
 199     XFontStruct *fs;
 200     char *str;
 201     int n;
 202 {
 203     int i;
 204     XChar2b *ptr;
 205
 206     if (n > buf2blen) {
 207         buf2b = (XChar2b *)XtRealloc((char *)buf2b, n * sizeof(XChar2b));
 208         buf2blen = n;
 209     }
 210     for (ptr = buf2b, i = n; --i >= 0; ptr++) {
 211         ptr->byte1 = *str++;
 212         ptr->byte2 = *str++;
 213     }
 214     return XTextWidth16(fs, buf2b, n);
 215 }
 216
 217 _XawLabelDraw16(dpy, d, gc, x, y, str, n)
 218     Display *dpy;
 219     Drawable d;
 220     GC gc;
 221     int x, y;
 222     char *str;
 223     int n;
 224 {
 225     int i;
 226     XChar2b *ptr;
 227
 228     if (n > buf2blen) {
 229         buf2b = (XChar2b *)XtRealloc((char *)buf2b, n * sizeof(XChar2b));
 230         buf2blen = n;
 231     }
 232     for (ptr = buf2b, i = n; --i >= 0; ptr++) {
 233         ptr->byte1 = *str++;
 234         ptr->byte2 = *str++;
 235     }
 236     XDrawString16(dpy, d, gc, x, y, buf2b, n);
 237 }
 238
 239 #define XTextWidth16 _XawLabelWidth16
 240 #define XDrawString16 _XawLabelDraw16
 241
 242 #endif /* WORD64 */
 243
 244 /*
 245  * Calculate width and height of displayed text in pixels
 246  */
 247
 248 static void SetTextWidthAndHeight(lw)
 249     LabelWidget lw;
 250 {
 251     XFontStruct *fs = lw->label.font;
 252
 253     char *nl;
 254
 255     if (lw->label.pixmap != None) {
 256         Window root;
 257         int x, y;
 258         unsigned int width, height, bw, depth;
 259         if (XGetGeometry(XtDisplay(lw), lw->label.pixmap, &root, &x, &y,
 260                          &width, &height, &bw, &depth)) {
 261             lw->label.label_height = height;
 262             lw->label.label_width = width;
 263             lw->label.label_len = depth;
 264             return;
 265         }
 266     }
 267     if ( lw->simple.international == True ) {
 268
 269       XFontSet  fset = lw->label.fontset;
 270       XFontSetExtents *ext = XExtentsOfFontSet(fset);
 271
 272       lw->label.label_height = ext->max_ink_extent.height;
 273       if (lw->label.label == NULL) {
 274           lw->label.label_len = 0;
 275           lw->label.label_width = 0;
 276       }
 277       else if ((nl = index(lw->label.label, '\n')) != NULL) {
 278           char *label;
 279           lw->label.label_len = MULTI_LINE_LABEL;
 280           lw->label.label_width = 0;
 281           for (label = lw->label.label; nl != NULL; nl = index(label, '\n')) {
 282               int width = XmbTextEscapement(fset, label, (int)(nl - label));
 283
 284               if (width > (int)lw->label.label_width)
 285                   lw->label.label_width = width;
 286               label = nl + 1;
 287               if (*label)
 288                   lw->label.label_height +=
 289                       ext->max_ink_extent.height;
 290           }
 291           if (*label) {
 292               int width = XmbTextEscapement(fset, label, strlen(label));
 293
 294               if (width > (int) lw->label.label_width)
 295                   lw->label.label_width = width;
 296           }
 297       } else {
 298           lw->label.label_len = strlen(lw->label.label);
 299           lw->label.label_width =
 300               XmbTextEscapement(fset, lw->label.label, (int) lw->label.label_len);
 301       }
 302
 303     } else {
 304
 305         lw->label.label_height = fs->max_bounds.ascent + fs->max_bounds.descent;
 306         if (lw->label.label == NULL) {
 307             lw->label.label_len = 0;
 308             lw->label.label_width = 0;
 309         }
 310         else if ((nl = index(lw->label.label, '\n')) != NULL) {
 311             char *label;
 312             lw->label.label_len = MULTI_LINE_LABEL;
 313             lw->label.label_width = 0;
 314             for (label = lw->label.label; nl != NULL; nl = index(label, '\n')) {
 315                 int width;
 316
 317                 if (lw->label.encoding)
 318                     width = XTextWidth16(fs, (TXT16*)label, (int)(nl - label)/2);
 319                 else
 320                     width = XTextWidth(fs, label, (int)(nl - label));
 321                 if (width > (int)lw->label.label_width)
 322                     lw->label.label_width = width;
 323                 label = nl + 1;
 324                 if (*label)
 325                     lw->label.label_height +=
 326                         fs->max_bounds.ascent + fs->max_bounds.descent;
 327             }
 328             if (*label) {
 329                 int width = XTextWidth(fs, label, strlen(label));
 330
 331                 if (lw->label.encoding)
 332                     width = XTextWidth16(fs, (TXT16*)label, (int)strlen(label)/2);
 333                 else
 334                     width = XTextWidth(fs, label, strlen(label));
 335                 if (width > (int) lw->label.label_width)
 336                     lw->label.label_width = width;
 337             }
 338         } else {
 339             lw->label.label_len = strlen(lw->label.label);
 340             if (lw->label.encoding)
 341                 lw->label.label_width =
 342                     XTextWidth16(fs, (TXT16*)lw->label.label,
 343                                  (int) lw->label.label_len/2);
 344             else
 345                 lw->label.label_width =
 346                     XTextWidth(fs, lw->label.label, (int) lw->label.label_len);
 347         }
 348
 349     }
 350 }
 351
 352 static void GetnormalGC(lw)
 353     LabelWidget lw;
 354 {
 355     XGCValues   values;
 356
 357     values.foreground   = lw->label.foreground;
 358     values.background   = lw->core.background_pixel;
 359     values.font         = lw->label.font->fid;
 360     values.graphics_exposures = False;
 361
 362     if ( lw->simple.international == True )
 363         /* Since Xmb/wcDrawString eats the font, I must use XtAllocateGC. */
 364         lw->label.normal_GC = XtAllocateGC(
 365                 (Widget)lw, 0,
 366         (unsigned) GCForeground | GCBackground | GCGraphicsExposures,
 367         &values, GCFont, 0 );
 368     else
 369         lw->label.normal_GC = XtGetGC(
 370         (Widget)lw,
 371         (unsigned) GCForeground | GCBackground | GCFont | GCGraphicsExposures,
 372         &values);
 373 }
 374
 375 static void GetgrayGC(lw)
 376     LabelWidget lw;
 377 {
 378     XGCValues   values;
 379
 380     values.foreground = lw->label.foreground;
 381     values.background = lw->core.background_pixel;
 382     values.font       = lw->label.font->fid;
 383     values.fill_style = FillTiled;
 384     values.tile       = XmuCreateStippledPixmap(XtScreen((Widget)lw),
 385                                                 lw->label.foreground,
 386                                                 lw->core.background_pixel,
 387                                                 lw->core.depth);
 388     values.graphics_exposures = False;
 389
 390     lw->label.stipple = values.tile;
 391     if ( lw->simple.international == True )
 392         /* Since Xmb/wcDrawString eats the font, I must use XtAllocateGC. */
 393         lw->label.gray_GC = XtAllocateGC((Widget)lw,  0,
 394                                 (unsigned) GCForeground | GCBackground |
 395                                            GCTile | GCFillStyle |
 396                                            GCGraphicsExposures,
 397                                 &values, GCFont, 0);
 398     else
 399         lw->label.gray_GC = XtGetGC((Widget)lw,
 400                                 (unsigned) GCForeground | GCBackground |
 401                                            GCFont | GCTile | GCFillStyle |
 402                                            GCGraphicsExposures,
 403                                 &values);
 404 }
 405
 406 static void compute_bitmap_offsets (lw)
 407     LabelWidget lw;
 408 {
 409     /*
 410      * bitmap will be eventually be displayed at
 411      * (internal_width, internal_height + lbm_y)
 412      */
 413     if (lw->label.lbm_height != 0) {
 414         lw->label.lbm_y = (lw->core.height -
 415                           (lw->label.internal_height * 2 +
 416                            lw->label.lbm_height)) / 2;
 417     } else {
 418         lw->label.lbm_y = 0;
 419     }
 420 }
 421
 422
 423 static void set_bitmap_info (lw)
 424     LabelWidget lw;
 425 {
 426     Window root;
 427     int x, y;
 428     unsigned int bw, depth;
 429
 430     if (!(lw->label.left_bitmap &&
 431           XGetGeometry (XtDisplay(lw), lw->label.left_bitmap, &root, &x, &y,
 432                         &lw->label.lbm_width, &lw->label.lbm_height,
 433                         &bw, &depth))) {
 434         lw->label.lbm_width = lw->label.lbm_height = 0;
 435     }
 436     compute_bitmap_offsets (lw);
 437 }
 438
 439
 440
 441 /* ARGSUSED */
 442 static void Initialize(request, new, args, num_args)
 443     Widget request, new;
 444     ArgList args;
 445     Cardinal *num_args;
 446 {
 447     LabelWidget lw = (LabelWidget) new;
 448
 449     if (lw->label.label == NULL)
 450         lw->label.label = XtNewString(lw->core.name);
 451     else {
 452         lw->label.label = XtNewString(lw->label.label);
 453     }
 454
 455     GetnormalGC(lw);
 456     GetgrayGC(lw);
 457
 458     SetTextWidthAndHeight(lw);
 459
 460     if (lw->core.height == 0)
 461         lw->core.height = lw->label.label_height +
 462                             2 * lw->label.internal_height;
 463
 464     set_bitmap_info (lw);               /* need core.height */
 465
 466     if (lw->core.width == 0)            /* need label.lbm_width */
 467         lw->core.width = (lw->label.label_width +
 468                             2 * lw->label.internal_width +
 469                             LEFT_OFFSET(lw));
 470
 471     lw->label.label_x = lw->label.label_y = 0;
 472     (*XtClass(new)->core_class.resize) ((Widget)lw);
 473
 474 } /* Initialize */
 475
 476 /*
 477  * Repaint the widget window
 478  */
 479
 480 /* ARGSUSED */
 481 static void Redisplay(gw, event, region)
 482     Widget gw;
 483     XEvent *event;
 484     Region region;
 485 {
 486     extern WidgetClass commandWidgetClass;
 487     LabelWidget w = (LabelWidget) gw;
 488     LabelWidgetClass lwclass = (LabelWidgetClass) XtClass (gw);
 489     GC gc;
 490
 491     /*
 492      * now we'll see if we need to draw the rest of the label
 493      */
 494     if (region != NULL) {
 495         int x = w->label.label_x;
 496         unsigned int width = w->label.label_width;
 497         if (w->label.lbm_width) {
 498             if (w->label.label_x > (x = w->label.internal_width))
 499                 width += w->label.label_x - x;
 500         }
 501         if (XRectInRegion(region, x, w->label.label_y,
 502                          width, w->label.label_height) == RectangleOut){
 503             return;
 504         }
 505     }
 506
 507     gc = XtIsSensitive(gw) ? w->label.normal_GC : w->label.gray_GC;
 508 #ifdef notdef
 509     if (region != NULL)
 510         XSetRegion(XtDisplay(gw), gc, region);
 511 #endif /*notdef*/
 512
 513     if (w->label.pixmap == None) {
 514         int len = w->label.label_len;
 515         char *label = w->label.label;
 516         Position y = w->label.label_y + w->label.font->max_bounds.ascent;
 517         Position ksy = w->label.label_y;
 518
 519         /* display left bitmap */
 520         if (w->label.left_bitmap && w->label.lbm_width != 0) {
 521             XCopyPlane (XtDisplay(gw), w->label.left_bitmap, XtWindow(gw), gc,
 522                        0, 0, w->label.lbm_width, w->label.lbm_height,
 523                        (int) w->label.internal_width,
 524                        (int) w->label.internal_height + w->label.lbm_y,
 525                        (unsigned long) 1L);
 526         }
 527
 528         if ( w->simple.international == True ) {
 529
 530             XFontSetExtents *ext = XExtentsOfFontSet(w->label.fontset);
 531
 532             ksy += abs(ext->max_ink_extent.y);
 533
 534             if (len == MULTI_LINE_LABEL) {
 535                 char *nl;
 536                 while ((nl = index(label, '\n')) != NULL) {
 537                     XmbDrawString(XtDisplay(w), XtWindow(w), w->label.fontset, gc,
 538                                 w->label.label_x, ksy, label, (int)(nl - label));
 539                     ksy += ext->max_ink_extent.height;
 540                     label = nl + 1;
 541                 }
 542                 len = strlen(label);
 543             }
 544             if (len)
 545                 XmbDrawString(XtDisplay(w), XtWindow(w), w->label.fontset, gc,
 546                               w->label.label_x, ksy, label, len);
 547
 548         } else { /*international false, so use R5 routine */
 549
 550             if (len == MULTI_LINE_LABEL) {
 551                 char *nl;
 552                 while ((nl = index(label, '\n')) != NULL) {
 553                     if (w->label.encoding)
 554                         XDrawString16(XtDisplay(gw), XtWindow(gw), gc,
 555                                                 w->label.label_x, y,
 556                                                 (TXT16*)label, (int)(nl - label)/2);
 557                     else
 558                         XDrawString(XtDisplay(gw), XtWindow(gw), gc,
 559                                         w->label.label_x, y, label, (int)(nl - label));
 560                     y += w->label.font->max_bounds.ascent +
 561                                         w->label.font->max_bounds.descent;
 562                     label = nl + 1;
 563                 }
 564                 len = strlen(label);
 565             }
 566             if (len) {
 567                 if (w->label.encoding)
 568                     XDrawString16(XtDisplay(gw), XtWindow(gw), gc,
 569                              w->label.label_x, y, (TXT16*)label, len/2);
 570                 else
 571                     XDrawString(XtDisplay(gw), XtWindow(gw), gc,
 572                            w->label.label_x, y, label, len);
 573             }
 574
 575         } /*endif international*/
 576
 577     } else if (w->label.label_len == 1) { /* depth */
 578         XCopyPlane(XtDisplay(gw), w->label.pixmap, XtWindow(gw), gc,
 579                                 0, 0, w->label.label_width, w->label.label_height,
 580                                 w->label.label_x, w->label.label_y, 1L);
 581     } else {
 582         XCopyArea(XtDisplay(gw), w->label.pixmap, XtWindow(gw), gc,
 583                                 0, 0, w->label.label_width, w->label.label_height,
 584                                 w->label.label_x, w->label.label_y);
 585     }
 586
 587 #ifdef notdef
 588     if (region != NULL)
 589         XSetClipMask(XtDisplay(gw), gc, (Pixmap)None);
 590 #endif /* notdef */
 591 }
 592
 593 static void _Reposition(lw, width, height, dx, dy)
 594     LabelWidget lw;
 595     Dimension width, height;
 596     Position *dx, *dy;
 597 {
 598     Position newPos;
 599     Position leftedge = lw->label.internal_width + LEFT_OFFSET(lw);
 600
 601     switch (lw->label.justify) {
 602
 603         case XtJustifyLeft   :
 604             newPos = leftedge;
 605             break;
 606
 607         case XtJustifyRight  :
 608             newPos = width -
 609                 (lw->label.label_width + lw->label.internal_width);
 610             break;
 611
 612         case XtJustifyCenter :
 613         default:
 614             newPos = (int)(width - lw->label.label_width) / 2;
 615             break;
 616     }
 617     if (newPos < (Position)leftedge)
 618         newPos = leftedge;
 619     *dx = newPos - lw->label.label_x;
 620     lw->label.label_x = newPos;
 621     *dy = (newPos = (int)(height - lw->label.label_height) / 2)
 622           - lw->label.label_y;
 623     lw->label.label_y = newPos;
 624     return;
 625 }
 626
 627 static void Resize(w)
 628     Widget w;
 629 {
 630     LabelWidget lw = (LabelWidget)w;
 631     Position dx, dy;
 632
 633     _Reposition(lw, w->core.width, w->core.height, &dx, &dy);
 634     compute_bitmap_offsets (lw);
 635 }
 636
 637 /*
 638  * Set specified arguments into widget
 639  */
 640
 641 #define PIXMAP 0
 642 #define WIDTH 1
 643 #define HEIGHT 2
 644 #define NUM_CHECKS 3
 645
 646 static Boolean SetValues(current, request, new, args, num_args)
 647     Widget current, request, new;
 648     ArgList args;
 649     Cardinal *num_args;
 650 {
 651     LabelWidget curlw = (LabelWidget) current;
 652     LabelWidget reqlw = (LabelWidget) request;
 653     LabelWidget newlw = (LabelWidget) new;
 654     int i;
 655     Boolean was_resized = False, redisplay = False, checks[NUM_CHECKS];
 656
 657     for (i = 0; i < NUM_CHECKS; i++)
 658         checks[i] = FALSE;
 659
 660     for (i = 0; i < *num_args; i++) {
 661         if (streq(XtNbitmap, args[i].name))
 662             checks[PIXMAP] = TRUE;
 663         if (streq(XtNwidth, args[i].name))
 664             checks[WIDTH] = TRUE;
 665         if (streq(XtNheight, args[i].name))
 666             checks[HEIGHT] = TRUE;
 667     }
 668
 669     if (newlw->label.label == NULL) {
 670         newlw->label.label = newlw->core.name;
 671     }
 672
 673     /*
 674      * resize on bitmap change
 675      */
 676     if (curlw->label.left_bitmap != newlw->label.left_bitmap) {
 677         was_resized = True;
 678     }
 679
 680     if (curlw->label.encoding != newlw->label.encoding)
 681         was_resized = True;
 682
 683     if ( (curlw->label.fontset != newlw->label.fontset) &&
 684                                          curlw->simple.international ){
 685         was_resized = True;
 686     }
 687     if (curlw->label.label != newlw->label.label) {
 688         if (curlw->label.label != curlw->core.name)
 689             XtFree( (char *)curlw->label.label );
 690
 691         if (newlw->label.label != newlw->core.name) {
 692             newlw->label.label = XtNewString( newlw->label.label );
 693         }
 694         was_resized = True;
 695     }
 696
 697     if (was_resized || (curlw->label.font != newlw->label.font) ||
 698         (curlw->label.justify != newlw->label.justify) || checks[PIXMAP]) {
 699
 700         SetTextWidthAndHeight(newlw);
 701         was_resized = True;
 702     }
 703
 704     /* recalculate the window size if something has changed. */
 705     if (newlw->label.resize && was_resized) {
 706         if ((curlw->core.height == reqlw->core.height) && !checks[HEIGHT])
 707             newlw->core.height = (newlw->label.label_height +
 708                                     2 * newlw->label.internal_height);
 709
 710         set_bitmap_info (newlw);
 711
 712         if ((curlw->core.width == reqlw->core.width) && !checks[WIDTH])
 713             newlw->core.width = (newlw->label.label_width +
 714                                     LEFT_OFFSET(newlw) +
 715                                     2 * newlw->label.internal_width);
 716     }
 717
 718     if (curlw->label.foreground         != newlw->label.foreground
 719         || curlw->core.background_pixel != newlw->core.background_pixel
 720         || curlw->label.font->fid       != newlw->label.font->fid         ) {
 721
 722         /* The Fontset is not in the GC - don't make a new GC if FS changes! */
 723
 724         XtReleaseGC(new, curlw->label.normal_GC);
 725         XtReleaseGC(new, curlw->label.gray_GC);
 726         XmuReleaseStippledPixmap( XtScreen(current), curlw->label.stipple );
 727         GetnormalGC(newlw);
 728         GetgrayGC(newlw);
 729         redisplay = True;
 730     }
 731
 732     if ((curlw->label.internal_width != newlw->label.internal_width)
 733         || (curlw->label.internal_height != newlw->label.internal_height)
 734         || was_resized) {
 735         /* Resize() will be called if geometry changes succeed */
 736         Position dx, dy;
 737         _Reposition(newlw, curlw->core.width, curlw->core.height, &dx, &dy);
 738     }
 739
 740     return was_resized || redisplay ||
 741            XtIsSensitive(current) != XtIsSensitive(new);
 742 }
 743
 744 static void Destroy(w)
 745     Widget w;
 746 {
 747     LabelWidget lw = (LabelWidget)w;
 748
 749     if ( lw->label.label != lw->core.name )
 750         XtFree( lw->label.label );
 751     XtReleaseGC( w, lw->label.normal_GC );
 752     XtReleaseGC( w, lw->label.gray_GC);
 753     XmuReleaseStippledPixmap( XtScreen(w), lw->label.stipple );
 754 }
 755
 756
 757 static XtGeometryResult QueryGeometry(w, intended, preferred)
 758     Widget w;
 759     XtWidgetGeometry *intended, *preferred;
 760 {
 761     LabelWidget lw = (LabelWidget)w;
 762
 763     preferred->request_mode = CWWidth | CWHeight;
 764     preferred->width = (lw->label.label_width +
 765                             2 * lw->label.internal_width +
 766                             LEFT_OFFSET(lw));
 767     preferred->height = lw->label.label_height +
 768                             2 * lw->label.internal_height;
 769     if (  ((intended->request_mode & (CWWidth | CWHeight))
 770                 == (CWWidth | CWHeight)) &&
 771           intended->width == preferred->width &&
 772           intended->height == preferred->height)
 773         return XtGeometryYes;
 774     else if (preferred->width == w->core.width &&
 775              preferred->height == w->core.height)
 776         return XtGeometryNo;
 777     else
 778         return XtGeometryAlmost;
 779 }