lwlib/lwlib-Xaw.c

   1 /* The lwlib interface to Athena widgets.
   2
   3 Copyright (C) 1993 Chuck Thompson <cthomp@cs.uiuc.edu>
   4 Copyright (C) 1994, 2001-2016 Free Software Foundation, Inc.
   5
   6 This file is part of the Lucid Widget Library.
   7
   8 The Lucid Widget Library is free software; you can redistribute it and/or
   9 modify it under the terms of the GNU General Public License as published by
  10 the Free Software Foundation; either version 1, or (at your option)
  11 any later version.
  12
  13 The Lucid Widget Library is distributed in the hope that it will be useful,
  14 but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 GNU General Public License for more details.
  17
  18 You should have received a copy of the GNU General Public License
  19 along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
  20
  21 #include <config.h>
  22
  23 #include <stdio.h>
  24 #include <stdlib.h>
  25 #include <setjmp.h>
  26
  27 #include <lisp.h>
  28
  29 #include "lwlib-Xaw.h"
  30
  31 #include <X11/StringDefs.h>
  32 #include <X11/IntrinsicP.h>
  33 #include <X11/CoreP.h>
  34 #include <X11/Shell.h>
  35
  36 #ifdef HAVE_XAW3D
  37 #include <X11/Xaw3d/Scrollbar.h>
  38 #include <X11/Xaw3d/Paned.h>
  39 #include <X11/Xaw3d/Dialog.h>
  40 #include <X11/Xaw3d/Form.h>
  41 #include <X11/Xaw3d/Command.h>
  42 #include <X11/Xaw3d/Label.h>
  43 #else /* !HAVE_XAW3D */
  44 #include <X11/Xaw/Scrollbar.h>
  45 #include <X11/Xaw/Paned.h>
  46 #include <X11/Xaw/Dialog.h>
  47 #include <X11/Xaw/Form.h>
  48 #include <X11/Xaw/Command.h>
  49 #include <X11/Xaw/Label.h>
  50 #endif /* HAVE_XAW3D */
  51
  52 #include <X11/Xatom.h>
  53
  54 #ifdef HAVE_XFT
  55 #include <X11/Xft/Xft.h>
  56
  57 struct widget_xft_data
  58 {
  59   Widget widget;
  60   XftFont *xft_font;
  61   XftDraw *xft_draw;
  62   XftColor xft_fg, xft_bg;
  63   int p_width, p_height;
  64   Pixmap p;
  65 };
  66
  67
  68 #endif
  69
  70 static void xaw_generic_callback (Widget widget,
  71                                   XtPointer closure,
  72                                   XtPointer call_data);
  73
  74
  75 Boolean
  76 lw_xaw_widget_p (Widget widget)
  77 {
  78   return (XtIsSubclass (widget, scrollbarWidgetClass) ||
  79           XtIsSubclass (widget, dialogWidgetClass));
  80 }
  81
  82
  83 #ifdef HAVE_XFT
  84 static void
  85 fill_xft_data (struct widget_xft_data *data, Widget widget, XftFont *font)
  86 {
  87   Pixel bg, fg;
  88   XColor colors[2];
  89
  90   data->widget = widget;
  91   data->xft_font = font;
  92   XtVaGetValues (widget,
  93                  XtNbackground, &bg,
  94                  XtNforeground, &fg,
  95                  NULL);
  96
  97   colors[0].pixel = data->xft_fg.pixel = fg;
  98   colors[1].pixel = data->xft_bg.pixel = bg;
  99   XQueryColors (XtDisplay (widget),
 100                 DefaultColormapOfScreen (XtScreen (widget)),
 101                 colors, 2);
 102
 103   data->xft_fg.color.alpha = 0xFFFF;
 104   data->xft_fg.color.red = colors[0].red;
 105   data->xft_fg.color.green = colors[0].green;
 106   data->xft_fg.color.blue = colors[0].blue;
 107   data->xft_bg.color.alpha = 0xFFFF;
 108   data->xft_bg.color.red = colors[1].red;
 109   data->xft_bg.color.green = colors[1].green;
 110   data->xft_bg.color.blue = colors[1].blue;
 111
 112   data->p = None;
 113   data->xft_draw = 0;
 114   data->p_width = data->p_height = 0;
 115 }
 116
 117 static XftFont*
 118 openFont (Widget widget, char *name)
 119 {
 120   char *fname = name;
 121   int screen = XScreenNumberOfScreen (XtScreen (widget));
 122   int len = strlen (fname), i = len-1;
 123   XftFont *fn;
 124
 125   /* Try to convert Gtk-syntax (Sans 9) to Xft syntax Sans-9.  */
 126   while (i > 0 && '0' <= fname[i] && fname[i] <= '9')
 127     --i;
 128   if (fname[i] == ' ')
 129     {
 130       fname = xstrdup (name);
 131       fname[i] = '-';
 132     }
 133
 134   fn = XftFontOpenName (XtDisplay (widget), screen, fname);
 135   if (fname != name) xfree (fname);
 136
 137   return fn;
 138 }
 139
 140 static int
 141 get_text_width_and_height (Widget widget, char *text,
 142                            XftFont *xft_font,
 143                            int *height)
 144 {
 145   int w = 0, h = 0;
 146   char *bp = text;
 147
 148   while (bp && *bp != '\0')
 149     {
 150       XGlyphInfo gi;
 151       char *cp = strchr (bp, '\n');
 152       XftTextExtentsUtf8 (XtDisplay (widget), xft_font,
 153                           (FcChar8 *) bp,
 154                           cp ? cp - bp : strlen (bp),
 155                           &gi);
 156       bp = cp ? cp + 1 : NULL;
 157       h += xft_font->height;
 158       if (w < gi.width) w = gi.width;
 159     }
 160
 161   *height = h;
 162   return w;
 163 }
 164
 165 static void
 166 draw_text (struct widget_xft_data *data, char *lbl, int inverse)
 167 {
 168   Screen *sc = XtScreen (data->widget);
 169   int screen = XScreenNumberOfScreen (sc);
 170   int y = data->xft_font->ascent;
 171   int x = inverse ? 0 : 2;
 172   char *bp = lbl;
 173
 174   data->xft_draw = XftDrawCreate (XtDisplay (data->widget),
 175                                   data->p,
 176                                   DefaultVisual (XtDisplay (data->widget),
 177                                                  screen),
 178                                   DefaultColormapOfScreen (sc));
 179   XftDrawRect (data->xft_draw,
 180                inverse ? &data->xft_fg : &data->xft_bg,
 181                0, 0, data->p_width, data->p_height);
 182
 183   if (!inverse) y += 2;
 184   while (bp && *bp != '\0')
 185     {
 186       char *cp = strchr (bp, '\n');
 187       XftDrawStringUtf8 (data->xft_draw,
 188                          inverse ? &data->xft_bg : &data->xft_fg,
 189                          data->xft_font, x, y,
 190                          (FcChar8 *) bp,
 191                          cp ? cp - bp : strlen (bp));
 192       bp = cp ? cp + 1 : NULL;
 193       /* 1.2 gives reasonable line spacing.  */
 194       y += data->xft_font->height * 1.2;
 195     }
 196
 197 }
 198
 199
 200 static void
 201 set_text (struct widget_xft_data *data, Widget toplevel, char *lbl, int margin)
 202 {
 203   int width, height;
 204
 205   width = get_text_width_and_height (data->widget, lbl, data->xft_font,
 206                                      &height);
 207   data->p_width = width + margin;
 208   data->p_height = height + margin;
 209
 210   data->p = XCreatePixmap (XtDisplay (data->widget),
 211                            XtWindow (toplevel),
 212                            data->p_width,
 213                            data->p_height,
 214                            DefaultDepthOfScreen (XtScreen (data->widget)));
 215   draw_text (data, lbl, 0);
 216   XtVaSetValues (data->widget, XtNbitmap, data->p, NULL);
 217 }
 218
 219 static struct widget_xft_data *
 220 find_xft_data (Widget widget)
 221 {
 222   widget_instance *inst = NULL;
 223   Widget parent = XtParent (widget);
 224   struct widget_xft_data *data = NULL;
 225   int nr;
 226   while (parent && !inst)
 227     {
 228       inst = lw_get_widget_instance (parent);
 229       parent = XtParent (parent);
 230     }
 231   if (!inst || !inst->xft_data || !inst->xft_data[0].xft_font) return 0;
 232
 233   for (nr = 0; data == NULL && nr < inst->nr_xft_data; ++nr)
 234     {
 235       if (inst->xft_data[nr].widget == widget)
 236         data = &inst->xft_data[nr];
 237     }
 238
 239   return data;
 240 }
 241
 242 static void
 243 command_press (Widget widget,
 244                XEvent* event,
 245                String *params,
 246                Cardinal *num_params)
 247 {
 248   struct widget_xft_data *data = find_xft_data (widget);
 249   if (data)
 250     {
 251       char *lbl;
 252       /* Since this isn't used for rectangle buttons, use it to for armed.  */
 253       XtVaSetValues (widget, XtNcornerRoundPercent, 1, NULL);
 254
 255       XtVaGetValues (widget, XtNlabel, &lbl, NULL);
 256       draw_text (data, lbl, 1);
 257     }
 258 }
 259
 260 static void
 261 command_reset (Widget widget,
 262                XEvent* event,
 263                String *params,
 264                Cardinal *num_params)
 265 {
 266   struct widget_xft_data *data = find_xft_data (widget);
 267   if (data)
 268     {
 269       Dimension cr;
 270       XtVaGetValues (widget, XtNcornerRoundPercent, &cr, NULL);
 271       if (cr == 1)
 272         {
 273           char *lbl;
 274           XtVaSetValues (widget, XtNcornerRoundPercent, 0, NULL);
 275           XtVaGetValues (widget, XtNlabel, &lbl, NULL);
 276           draw_text (data, lbl, 0);
 277         }
 278     }
 279 }
 280
 281
 282 #endif
 283
 284 void
 285 xaw_update_one_widget (widget_instance *instance,
 286                        Widget widget,
 287                        widget_value *val,
 288                        Boolean deep_p)
 289 {
 290   if (XtIsSubclass (widget, dialogWidgetClass))
 291     {
 292
 293 #ifdef HAVE_XFT
 294       if (instance->xft_data && instance->xft_data[0].xft_font)
 295         {
 296           set_text (&instance->xft_data[0], instance->parent,
 297                     val->contents->value, 10);
 298         }
 299 #endif
 300       XtVaSetValues (widget, XtNlabel, val->contents->value, NULL);
 301     }
 302   else if (XtIsSubclass (widget, commandWidgetClass))
 303     {
 304       Dimension bw = 0;
 305       Arg al[10];
 306       int ac = 0;
 307
 308       XtVaGetValues (widget, XtNborderWidth, &bw, NULL);
 309       if (bw == 0)
 310         /* Don't let buttons end up with 0 borderwidth, that's ugly...
 311            Yeah, all this should really be done through app-defaults files
 312            or fallback resources, but that's a whole different can of worms
 313            that I don't feel like opening right now.  Making Athena widgets
 314            not look like shit is just entirely too much work.
 315          */
 316         {
 317           XtSetArg (al[0], XtNborderWidth, 1);
 318           XtSetValues (widget, al, 1);
 319         }
 320
 321       XtSetSensitive (widget, val->enabled);
 322       XtSetArg (al[ac], XtNlabel, val->value);ac++;
 323       /* Force centered button text.  Se above. */
 324       XtSetArg (al[ac], XtNjustify, XtJustifyCenter);ac++;
 325 #ifdef HAVE_XFT
 326       if (instance->xft_data && instance->xft_data[0].xft_font)
 327         {
 328           int th;
 329           int nr;
 330           for (nr = 0; nr < instance->nr_xft_data; ++nr)
 331             if (instance->xft_data[nr].widget == widget)
 332               break;
 333           if (nr < instance->nr_xft_data)
 334             {
 335               set_text (&instance->xft_data[nr], instance->parent,
 336                         val->value, 6);
 337
 338               /* Must set internalHeight to twice the highlight thickness,
 339                  or else it gets overwritten by our pixmap.  Probably a bug.  */
 340               XtVaGetValues (widget, XtNhighlightThickness, &th, NULL);
 341               XtSetArg (al[ac], XtNinternalHeight, 2*th);ac++;
 342             }
 343         }
 344 #endif
 345       XtSetValues (widget, al, ac);
 346       XtRemoveAllCallbacks (widget, XtNcallback);
 347       XtAddCallback (widget, XtNcallback, xaw_generic_callback, instance);
 348     }
 349 }
 350
 351 void
 352 xaw_update_one_value (widget_instance *instance,
 353                       Widget widget,
 354                       widget_value *val)
 355 {
 356   /* This function is not used by the scrollbars and those are the only
 357      Athena widget implemented at the moment so do nothing. */
 358   return;
 359 }
 360
 361 void
 362 xaw_destroy_instance (widget_instance *instance)
 363 {
 364 #ifdef HAVE_XFT
 365   if (instance->xft_data)
 366     {
 367       int i;
 368       for (i = 0; i < instance->nr_xft_data; ++i)
 369         {
 370           if (instance->xft_data[i].xft_draw)
 371             XftDrawDestroy (instance->xft_data[i].xft_draw);
 372           if (instance->xft_data[i].p != None)
 373             {
 374               XtVaSetValues (instance->xft_data[i].widget, XtNbitmap, None,
 375                              NULL);
 376               XFreePixmap (XtDisplay (instance->widget),
 377                            instance->xft_data[i].p);
 378             }
 379         }
 380       if (instance->xft_data[0].xft_font)
 381         XftFontClose (XtDisplay (instance->widget),
 382                       instance->xft_data[0].xft_font);
 383       xfree (instance->xft_data);
 384     }
 385 #endif
 386   if (XtIsSubclass (instance->widget, dialogWidgetClass))
 387     /* Need to destroy the Shell too. */
 388     XtDestroyWidget (XtParent (instance->widget));
 389   else
 390     XtDestroyWidget (instance->widget);
 391 }
 392
 393 void
 394 xaw_popup_menu (Widget widget, XEvent *event)
 395 {
 396   /* An Athena menubar has not been implemented. */
 397   return;
 398 }
 399
 400 void
 401 xaw_pop_instance (widget_instance *instance, Boolean up)
 402 {
 403   Widget widget = instance->widget;
 404
 405   if (up)
 406     {
 407       if (XtIsSubclass (widget, dialogWidgetClass))
 408         {
 409           /* For dialogs, we need to call XtPopup on the parent instead
 410              of calling XtManageChild on the widget.
 411              Also we need to hack the shell's WM_PROTOCOLS to get it to
 412              understand what the close box is supposed to do!!
 413            */
 414           Display *dpy = XtDisplay (widget);
 415           Widget shell = XtParent (widget);
 416           Atom props [2];
 417           int i = 0;
 418           props [i++] = XInternAtom (dpy, "WM_DELETE_WINDOW", False);
 419           XChangeProperty (dpy, XtWindow (shell),
 420                            XInternAtom (dpy, "WM_PROTOCOLS", False),
 421                            XA_ATOM, 32, PropModeAppend,
 422                            (unsigned char *) props, i);
 423
 424           /* Center the widget in its parent.  Why isn't this kind of crap
 425              done automatically?  I thought toolkits were supposed to make
 426              life easier?
 427            */
 428           {
 429             unsigned int x, y, w, h;
 430             Widget topmost = instance->parent;
 431             Arg args[2];
 432
 433             w = shell->core.width;
 434             h = shell->core.height;
 435             while (topmost->core.parent && XtIsRealized (topmost->core.parent))
 436               topmost = topmost->core.parent;
 437             if (topmost->core.width < w) x = topmost->core.x;
 438             else x = topmost->core.x + ((topmost->core.width - w) / 2);
 439             if (topmost->core.height < h) y = topmost->core.y;
 440             else y = topmost->core.y + ((topmost->core.height - h) / 2);
 441             /* Using XtMoveWidget caused the widget to come
 442                out in the wrong place with vtwm.
 443                Question of virtual vs real coords, perhaps.  */
 444             XtSetArg (args[0], XtNx, x);
 445             XtSetArg (args[1], XtNy, y);
 446             XtSetValues (shell, args, 2);
 447           }
 448
 449           /* Finally, pop it up. */
 450           XtPopup (shell, XtGrabNonexclusive);
 451         }
 452       else
 453         XtManageChild (widget);
 454     }
 455   else
 456     {
 457       if (XtIsSubclass (widget, dialogWidgetClass))
 458         XtUnmanageChild (XtParent (widget));
 459       else
 460         XtUnmanageChild (widget);
 461     }
 462 }
 463
 464 \f
 465 /* Dialog boxes */
 466
 467 static char overrideTrans[] =
 468         "<Message>WM_PROTOCOLS: lwlib_delete_dialog()";
 469 /* Dialogs pop down on any key press */
 470 static char dialogOverride[] =
 471        "<KeyPress>Escape:       lwlib_delete_dialog()";
 472 static void wm_delete_window (Widget w,
 473                               XEvent *event,
 474                               String *params,
 475                               Cardinal *num_params);
 476 static XtActionsRec xaw_actions [] = {
 477   {"lwlib_delete_dialog", wm_delete_window}
 478 };
 479 static Boolean actions_initted = False;
 480
 481 #ifdef HAVE_XFT
 482 static XtActionsRec button_actions[] =
 483   {
 484     { "my_reset", command_reset },
 485     { "my_press", command_press },
 486   };
 487 char buttonTrans[] =
 488   "<Leave>: reset() my_reset()\n"
 489   "<Btn1Down>: set() my_press()\n"
 490   "<Btn1Up>:  my_reset() notify() unset()\n";
 491 #endif
 492
 493 static Widget
 494 make_dialog (char* name,
 495              Widget parent,
 496              Boolean pop_up_p,
 497              char* shell_title,
 498              char* icon_name,
 499              Boolean text_input_slot,
 500              Boolean radio_box,
 501              Boolean list,
 502              int left_buttons,
 503              int right_buttons,
 504              widget_instance *instance)
 505 {
 506   Arg av [20];
 507   int ac = 0;
 508   int i, bc;
 509   char button_name [255];
 510   Widget shell;
 511   Widget dialog;
 512   Widget button;
 513   XtTranslations override;
 514 #ifdef HAVE_XFT
 515   XftFont *xft_font = 0;
 516   XtTranslations button_override;
 517 #endif
 518
 519   if (! pop_up_p) abort (); /* not implemented */
 520   if (text_input_slot) abort (); /* not implemented */
 521   if (radio_box) abort (); /* not implemented */
 522   if (list) abort (); /* not implemented */
 523
 524   if (! actions_initted)
 525     {
 526       XtAppContext app = XtWidgetToApplicationContext (parent);
 527       XtAppAddActions (app, xaw_actions,
 528                        sizeof (xaw_actions) / sizeof (xaw_actions[0]));
 529 #ifdef HAVE_XFT
 530       XtAppAddActions (app, button_actions,
 531                        sizeof (button_actions) / sizeof (button_actions[0]));
 532 #endif
 533       actions_initted = True;
 534     }
 535
 536   override = XtParseTranslationTable (overrideTrans);
 537
 538   ac = 0;
 539   XtSetArg (av[ac], XtNtitle, shell_title); ac++;
 540   XtSetArg (av[ac], XtNallowShellResize, True); ac++;
 541
 542   /* Don't allow any geometry request from the user.  */
 543   XtSetArg (av[ac], XtNgeometry, 0); ac++;
 544
 545   shell = XtCreatePopupShell ("dialog", transientShellWidgetClass,
 546                               parent, av, ac);
 547   XtOverrideTranslations (shell, override);
 548
 549   ac = 0;
 550   dialog = XtCreateManagedWidget (name, dialogWidgetClass, shell, av, ac);
 551   override = XtParseTranslationTable (dialogOverride);
 552   XtOverrideTranslations (dialog, override);
 553
 554 #ifdef HAVE_XFT
 555   {
 556     int num;
 557     Widget *ch = NULL;
 558     Widget w = 0;
 559     XtVaGetValues (dialog,
 560                    XtNnumChildren, &num,
 561                    XtNchildren, &ch, NULL);
 562     for (i = 0; i < num; ++i)
 563       {
 564         if (!XtIsSubclass (ch[i], commandWidgetClass)
 565             && XtIsSubclass (ch[i], labelWidgetClass))
 566           {
 567             w = ch[i];
 568             break;
 569           }
 570       }
 571     instance->xft_data = 0;
 572     instance->nr_xft_data = 0;
 573     if (w)
 574       {
 575         XtResource rec[] =
 576           { { "font", "Font", XtRString, sizeof(String), 0, XtRString,
 577               (XtPointer)"Sans-10" }};
 578         char *fontName = NULL;
 579         XtVaGetSubresources (dialog, &fontName, "Dialog", "dialog",
 580                              rec, 1, (String)NULL);
 581         if (fontName)
 582           {
 583             XFontStruct *xfn = XLoadQueryFont (XtDisplay (dialog), fontName);
 584             if (!xfn)
 585               xft_font = openFont (dialog, fontName);
 586             else
 587               XFreeFont (XtDisplay (dialog), xfn);
 588           }
 589
 590         if (xft_font)
 591           {
 592             instance->nr_xft_data = left_buttons + right_buttons + 1;
 593             instance->xft_data = calloc (instance->nr_xft_data,
 594                                          sizeof(*instance->xft_data));
 595
 596             fill_xft_data (&instance->xft_data[0], w, xft_font);
 597           }
 598       }
 599
 600     button_override = XtParseTranslationTable (buttonTrans);
 601   }
 602 #endif
 603
 604   bc = 0;
 605   button = 0;
 606   for (i = 0; i < left_buttons; i++)
 607     {
 608       ac = 0;
 609       XtSetArg (av [ac], XtNfromHoriz, button); ac++;
 610       XtSetArg (av [ac], XtNleft, XtChainLeft); ac++;
 611       XtSetArg (av [ac], XtNright, XtChainLeft); ac++;
 612       XtSetArg (av [ac], XtNtop, XtChainBottom); ac++;
 613       XtSetArg (av [ac], XtNbottom, XtChainBottom); ac++;
 614       XtSetArg (av [ac], XtNresizable, True); ac++;
 615 #ifdef HAVE_XAW3D
 616       if (DefaultDepthOfScreen (XtScreen (dialog)) >= 16)
 617         {
 618           /* Turn of dithered shadow if we can.  Looks bad */
 619           XtSetArg (av [ac], "beNiceToColormap", False); ac++;
 620         }
 621 #endif
 622       sprintf (button_name, "button%d", ++bc);
 623       button = XtCreateManagedWidget (button_name, commandWidgetClass,
 624                                       dialog, av, ac);
 625 #ifdef HAVE_XFT
 626       if (xft_font)
 627         {
 628           fill_xft_data (&instance->xft_data[bc], button, xft_font);
 629           XtOverrideTranslations (button, button_override);
 630         }
 631 #endif
 632     }
 633
 634   for (i = 0; i < right_buttons; i++)
 635     {
 636       ac = 0;
 637       XtSetArg (av [ac], XtNfromHoriz, button); ac++;
 638       if (i == 0)
 639         {
 640           /* Separator to the other buttons. */
 641           XtSetArg (av [ac], XtNhorizDistance, 30); ac++;
 642         }
 643       XtSetArg (av [ac], XtNleft, XtChainRight); ac++;
 644       XtSetArg (av [ac], XtNright, XtChainRight); ac++;
 645       XtSetArg (av [ac], XtNtop, XtChainBottom); ac++;
 646       XtSetArg (av [ac], XtNbottom, XtChainBottom); ac++;
 647       XtSetArg (av [ac], XtNresizable, True); ac++;
 648 #ifdef HAVE_XAW3D
 649       if (DefaultDepthOfScreen (XtScreen (dialog)) >= 16)
 650         {
 651           /* Turn of dithered shadow if we can.  Looks bad */
 652           XtSetArg (av [ac], "beNiceToColormap", False); ac++;
 653         }
 654 #endif
 655       sprintf (button_name, "button%d", ++bc);
 656       button = XtCreateManagedWidget (button_name, commandWidgetClass,
 657                                       dialog, av, ac);
 658 #ifdef HAVE_XFT
 659       if (xft_font)
 660         {
 661           fill_xft_data (&instance->xft_data[bc], button, xft_font);
 662           XtOverrideTranslations (button, button_override);
 663         }
 664 #endif
 665     }
 666
 667   return dialog;
 668 }
 669
 670 Widget
 671 xaw_create_dialog (widget_instance *instance)
 672 {
 673   char *name = instance->info->type;
 674   Widget parent = instance->parent;
 675   Widget widget;
 676   Boolean pop_up_p = instance->pop_up_p;
 677   char *shell_name = 0;
 678   char *icon_name = 0;
 679   Boolean text_input_slot = False;
 680   Boolean radio_box = False;
 681   Boolean list = False;
 682   int total_buttons;
 683   int left_buttons = 0;
 684   int right_buttons = 1;
 685
 686   switch (name [0]) {
 687   case 'E': case 'e':
 688     icon_name = "dbox-error";
 689     shell_name = "Error";
 690     break;
 691
 692   case 'I': case 'i':
 693     icon_name = "dbox-info";
 694     shell_name = "Information";
 695     break;
 696
 697   case 'L': case 'l':
 698     list = True;
 699     icon_name = "dbox-question";
 700     shell_name = "Prompt";
 701     break;
 702
 703   case 'P': case 'p':
 704     text_input_slot = True;
 705     icon_name = "dbox-question";
 706     shell_name = "Prompt";
 707     break;
 708
 709   case 'Q': case 'q':
 710     icon_name = "dbox-question";
 711     shell_name = "Question";
 712     break;
 713   }
 714
 715   total_buttons = name [1] - '0';
 716
 717   if (name [3] == 'T' || name [3] == 't')
 718     {
 719       text_input_slot = False;
 720       radio_box = True;
 721     }
 722   else if (name [3])
 723     right_buttons = name [4] - '0';
 724
 725   left_buttons = total_buttons - right_buttons;
 726
 727   widget = make_dialog (name, parent, pop_up_p,
 728                         shell_name, icon_name, text_input_slot, radio_box,
 729                         list, left_buttons, right_buttons, instance);
 730   return widget;
 731 }
 732
 733
 734 static void
 735 xaw_generic_callback (Widget widget, XtPointer closure, XtPointer call_data)
 736 {
 737   widget_instance *instance = (widget_instance *) closure;
 738   Widget instance_widget;
 739   LWLIB_ID id;
 740   XtPointer user_data;
 741
 742   lw_internal_update_other_instances (widget, closure, call_data);
 743
 744   if (! instance)
 745     return;
 746   if (widget->core.being_destroyed)
 747     return;
 748
 749   instance_widget = instance->widget;
 750   if (!instance_widget)
 751     return;
 752
 753   id = instance->info->id;
 754
 755   /* Damn!  Athena doesn't give us a way to hang our own data on the
 756      buttons, so we have to go find it...  I guess this assumes that
 757      all instances of a button have the same call data. */
 758   {
 759     widget_value *val = instance->info->val->contents;
 760     char *name = XtName (widget);
 761     while (val)
 762       {
 763         if (val->name && !strcmp (val->name, name))
 764           break;
 765         val = val->next;
 766       }
 767     if (! val) abort ();
 768     user_data = val->call_data;
 769   }
 770
 771   if (instance->info->selection_cb)
 772     instance->info->selection_cb (widget, id, user_data);
 773 }
 774
 775 static void
 776 wm_delete_window (Widget w,
 777                   XEvent *event,
 778                   String *params,
 779                   Cardinal *num_params)
 780 {
 781   LWLIB_ID id;
 782   Cardinal nkids;
 783   int i;
 784   Widget *kids = 0;
 785   Widget widget = 0, shell;
 786
 787   if (XtIsSubclass (w, dialogWidgetClass))
 788     shell = XtParent (w);
 789   else
 790     shell = w;
 791
 792   if (! XtIsSubclass (shell, shellWidgetClass))
 793     abort ();
 794   XtVaGetValues (shell, XtNnumChildren, &nkids, NULL);
 795   XtVaGetValues (shell, XtNchildren, &kids, NULL);
 796   if (!kids || !*kids)
 797     abort ();
 798   for (i = 0; i < nkids; i++)
 799     {
 800       widget = kids[i];
 801       if (XtIsSubclass (widget, dialogWidgetClass))
 802         break;
 803     }
 804   if (! widget) return;
 805
 806   id = lw_get_widget_id (widget);
 807   if (! id) abort ();
 808
 809   {
 810     widget_info *info = lw_get_widget_info (id);
 811     if (! info) abort ();
 812     if (info->selection_cb)
 813       info->selection_cb (widget, id, (XtPointer) -1);
 814   }
 815
 816   lw_destroy_all_widgets (id);
 817 }
 818
 819 \f
 820
 821 static Widget
 822 xaw_create_main (widget_instance *instance)
 823 {
 824   Arg al[1];
 825   int ac;
 826
 827   /* Create a vertical Paned to hold menubar */
 828   ac = 0;
 829   XtSetArg (al[ac], XtNborderWidth, 0); ac++;
 830   return XtCreateWidget (instance->info->name, panedWidgetClass,
 831                          instance->parent, al, ac);
 832 }
 833
 834 widget_creation_entry
 835 xaw_creation_table [] =
 836 {
 837   {"main",                      xaw_create_main},
 838   {NULL, NULL}
 839 };