lwlib/lwlib-Xaw.c

   1 /* The lwlib interface to Athena widgets.
   2 Copyright (C) 1993 Chuck Thompson <cthomp@cs.uiuc.edu>
   3 Copyright (C) 1994, 2001, 2002, 2003, 2004, 2005, 2006,
   4   2007 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; see the file COPYING.  If not, write to
  20 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  21 Boston, MA 02110-1301, USA.  */
  22
  23 #ifdef HAVE_CONFIG_H
  24 #include <config.h>
  25 #endif
  26
  27 #include <stdio.h>
  28
  29 #include "../src/lisp.h"
  30
  31 #include "lwlib-Xaw.h"
  32
  33 #include <X11/StringDefs.h>
  34 #include <X11/IntrinsicP.h>
  35 #include <X11/CoreP.h>
  36 #include <X11/Shell.h>
  37
  38 #include <X11/Xaw/Scrollbar.h>
  39 #include <X11/Xaw/Paned.h>
  40 #include <X11/Xaw/Dialog.h>
  41 #include <X11/Xaw/Form.h>
  42 #include <X11/Xaw/Command.h>
  43 #include <X11/Xaw/Label.h>
  44
  45 #include <X11/Xatom.h>
  46
  47 static void xaw_generic_callback (/*Widget, XtPointer, XtPointer*/);
  48
  49
  50 Boolean
  51 lw_xaw_widget_p (widget)
  52      Widget widget;
  53 {
  54   return (XtIsSubclass (widget, scrollbarWidgetClass) ||
  55           XtIsSubclass (widget, dialogWidgetClass));
  56 }
  57
  58 #if 0
  59 static void
  60 xaw_update_scrollbar (instance, widget, val)
  61      widget_instance *instance;
  62      Widget widget;
  63      widget_value *val;
  64 {
  65   if (val->scrollbar_data)
  66     {
  67       scrollbar_values *data = val->scrollbar_data;
  68       Dimension height, width;
  69       Dimension pos_x, pos_y;
  70       int widget_shown, widget_topOfThumb;
  71       float new_shown, new_topOfThumb;
  72
  73       XtVaGetValues (widget,
  74                      XtNheight, &height,
  75                      XtNwidth, &width,
  76                      XtNx, &pos_x,
  77                      XtNy, &pos_y,
  78                      XtNtopOfThumb, &widget_topOfThumb,
  79                      XtNshown, &widget_shown,
  80                      NULL);
  81
  82       /*
  83        * First size and position the scrollbar widget.
  84        * We need to position it to second-guess the Paned widget's notion
  85        * of what should happen when the WMShell gets resized.
  86        */
  87       if (height != data->scrollbar_height || pos_y != data->scrollbar_pos)
  88         {
  89           XtConfigureWidget (widget, pos_x, data->scrollbar_pos,
  90                              width, data->scrollbar_height, 0);
  91
  92           XtVaSetValues (widget,
  93                          XtNlength, data->scrollbar_height,
  94                          XtNthickness, width,
  95                          NULL);
  96         }
  97
  98       /*
  99        * Now the size the scrollbar's slider.
 100        */
 101       new_shown = (float) data->slider_size /
 102         (float) (data->maximum - data->minimum);
 103
 104       new_topOfThumb = (float) (data->slider_position - data->minimum) /
 105         (float) (data->maximum - data->minimum);
 106
 107       if (new_shown > 1.0)
 108         new_shown = 1.0;
 109       if (new_shown < 0)
 110         new_shown = 0;
 111
 112       if (new_topOfThumb > 1.0)
 113         new_topOfThumb = 1.0;
 114       if (new_topOfThumb < 0)
 115         new_topOfThumb = 0;
 116
 117       if (new_shown != widget_shown || new_topOfThumb != widget_topOfThumb)
 118         XawScrollbarSetThumb (widget, new_topOfThumb, new_shown);
 119     }
 120 }
 121 #endif
 122
 123 void
 124 #ifdef PROTOTYPES
 125 xaw_update_one_widget (widget_instance *instance, Widget widget,
 126                        widget_value *val, Boolean deep_p)
 127 #else
 128 xaw_update_one_widget (instance, widget, val, deep_p)
 129      widget_instance *instance;
 130      Widget widget;
 131      widget_value *val;
 132      Boolean deep_p;
 133 #endif
 134 {
 135 #if 0
 136   if (XtIsSubclass (widget, scrollbarWidgetClass))
 137     {
 138       xaw_update_scrollbar (instance, widget, val);
 139     }
 140 #endif
 141   if (XtIsSubclass (widget, dialogWidgetClass))
 142     {
 143       Arg al[1];
 144       int ac = 0;
 145       XtSetArg (al[ac], XtNlabel, val->contents->value); ac++;
 146       XtSetValues (widget,  al, ac);
 147     }
 148   else if (XtIsSubclass (widget, commandWidgetClass))
 149     {
 150       Dimension bw = 0;
 151       Arg al[3];
 152
 153       XtVaGetValues (widget, XtNborderWidth, &bw, NULL);
 154       if (bw == 0)
 155         /* Don't let buttons end up with 0 borderwidth, that's ugly...
 156            Yeah, all this should really be done through app-defaults files
 157            or fallback resources, but that's a whole different can of worms
 158            that I don't feel like opening right now.  Making Athena widgets
 159            not look like shit is just entirely too much work.
 160          */
 161         {
 162           XtSetArg (al[0], XtNborderWidth, 1);
 163           XtSetValues (widget, al, 1);
 164         }
 165
 166       XtSetSensitive (widget, val->enabled);
 167       XtSetArg (al[0], XtNlabel, val->value);
 168       /* Force centered button text.  Se above. */
 169       XtSetArg (al[1], XtNjustify, XtJustifyCenter);
 170       XtSetValues (widget, al, 2);
 171       XtRemoveAllCallbacks (widget, XtNcallback);
 172       XtAddCallback (widget, XtNcallback, xaw_generic_callback, instance);
 173     }
 174 }
 175
 176 void
 177 xaw_update_one_value (instance, widget, val)
 178      widget_instance *instance;
 179      Widget widget;
 180      widget_value *val;
 181 {
 182   /* This function is not used by the scrollbars and those are the only
 183      Athena widget implemented at the moment so do nothing. */
 184   return;
 185 }
 186
 187 void
 188 xaw_destroy_instance (instance)
 189      widget_instance *instance;
 190 {
 191   if (XtIsSubclass (instance->widget, dialogWidgetClass))
 192     /* Need to destroy the Shell too. */
 193     XtDestroyWidget (XtParent (instance->widget));
 194   else
 195     XtDestroyWidget (instance->widget);
 196 }
 197
 198 void
 199 xaw_popup_menu (widget, event)
 200      Widget widget;
 201      XEvent *event;
 202 {
 203   /* An Athena menubar has not been implemented. */
 204   return;
 205 }
 206
 207 void
 208 #ifdef PROTOTYPES
 209 xaw_pop_instance (widget_instance *instance, Boolean up)
 210 #else
 211 xaw_pop_instance (instance, up)
 212      widget_instance *instance;
 213      Boolean up;
 214 #endif
 215 {
 216   Widget widget = instance->widget;
 217
 218   if (up)
 219     {
 220       if (XtIsSubclass (widget, dialogWidgetClass))
 221         {
 222           /* For dialogs, we need to call XtPopup on the parent instead
 223              of calling XtManageChild on the widget.
 224              Also we need to hack the shell's WM_PROTOCOLS to get it to
 225              understand what the close box is supposed to do!!
 226            */
 227           Display *dpy = XtDisplay (widget);
 228           Widget shell = XtParent (widget);
 229           Atom props [2];
 230           int i = 0;
 231           props [i++] = XInternAtom (dpy, "WM_DELETE_WINDOW", False);
 232           XChangeProperty (dpy, XtWindow (shell),
 233                            XInternAtom (dpy, "WM_PROTOCOLS", False),
 234                            XA_ATOM, 32, PropModeAppend,
 235                            (unsigned char *) props, i);
 236
 237           /* Center the widget in its parent.  Why isn't this kind of crap
 238              done automatically?  I thought toolkits were supposed to make
 239              life easier?
 240            */
 241           {
 242             unsigned int x, y, w, h;
 243             Widget topmost = instance->parent;
 244             Arg args[2];
 245
 246             w = shell->core.width;
 247             h = shell->core.height;
 248             while (topmost->core.parent && XtIsRealized (topmost->core.parent))
 249               topmost = topmost->core.parent;
 250             if (topmost->core.width < w) x = topmost->core.x;
 251             else x = topmost->core.x + ((topmost->core.width - w) / 2);
 252             if (topmost->core.height < h) y = topmost->core.y;
 253             else y = topmost->core.y + ((topmost->core.height - h) / 2);
 254             /* Using XtMoveWidget caused the widget to come
 255                out in the wrong place with vtwm.
 256                Question of virtual vs real coords, perhaps.  */
 257             XtSetArg (args[0], XtNx, x);
 258             XtSetArg (args[1], XtNy, y);
 259             XtSetValues (shell, args, 2);
 260           }
 261
 262           /* Finally, pop it up. */
 263           XtPopup (shell, XtGrabNonexclusive);
 264         }
 265       else
 266         XtManageChild (widget);
 267     }
 268   else
 269     {
 270       if (XtIsSubclass (widget, dialogWidgetClass))
 271         XtUnmanageChild (XtParent (widget));
 272       else
 273         XtUnmanageChild (widget);
 274     }
 275 }
 276
 277 \f
 278 /* Dialog boxes */
 279
 280 static char overrideTrans[] =
 281         "<Message>WM_PROTOCOLS: lwlib_delete_dialog()";
 282 /* Dialogs pop down on any key press */
 283 static char dialogOverride[] =
 284        "<KeyPress>Escape:       lwlib_delete_dialog()";
 285 static void wm_delete_window();
 286 static XtActionsRec xaw_actions [] = {
 287   {"lwlib_delete_dialog", wm_delete_window}
 288 };
 289 static Boolean actions_initted = False;
 290
 291 static Widget
 292 make_dialog (name, parent, pop_up_p, shell_title, icon_name, text_input_slot, radio_box, list, left_buttons, right_buttons)
 293      char* name;
 294      Widget parent;
 295      Boolean pop_up_p;
 296      char* shell_title;
 297      char* icon_name;
 298      Boolean text_input_slot;
 299      Boolean radio_box;
 300      Boolean list;
 301      int left_buttons;
 302      int right_buttons;
 303 {
 304   Arg av [20];
 305   int ac = 0;
 306   int i, bc;
 307   char button_name [255];
 308   Widget shell;
 309   Widget dialog;
 310   Widget button;
 311   XtTranslations override;
 312
 313   if (! pop_up_p) abort (); /* not implemented */
 314   if (text_input_slot) abort (); /* not implemented */
 315   if (radio_box) abort (); /* not implemented */
 316   if (list) abort (); /* not implemented */
 317
 318   if (! actions_initted)
 319     {
 320       XtAppContext app = XtWidgetToApplicationContext (parent);
 321       XtAppAddActions (app, xaw_actions,
 322                        sizeof (xaw_actions) / sizeof (xaw_actions[0]));
 323       actions_initted = True;
 324     }
 325
 326   override = XtParseTranslationTable (overrideTrans);
 327
 328   ac = 0;
 329   XtSetArg (av[ac], XtNtitle, shell_title); ac++;
 330   XtSetArg (av[ac], XtNallowShellResize, True); ac++;
 331
 332   /* Don't allow any geometry request from the user.  */
 333   XtSetArg (av[ac], XtNgeometry, 0); ac++;
 334
 335   shell = XtCreatePopupShell ("dialog", transientShellWidgetClass,
 336                               parent, av, ac);
 337   XtOverrideTranslations (shell, override);
 338
 339   ac = 0;
 340   dialog = XtCreateManagedWidget (name, dialogWidgetClass, shell, av, ac);
 341   override = XtParseTranslationTable (dialogOverride);
 342   XtOverrideTranslations (dialog, override);
 343
 344   bc = 0;
 345   button = 0;
 346   for (i = 0; i < left_buttons; i++)
 347     {
 348       ac = 0;
 349       XtSetArg (av [ac], XtNfromHoriz, button); ac++;
 350       XtSetArg (av [ac], XtNleft, XtChainLeft); ac++;
 351       XtSetArg (av [ac], XtNright, XtChainLeft); ac++;
 352       XtSetArg (av [ac], XtNtop, XtChainBottom); ac++;
 353       XtSetArg (av [ac], XtNbottom, XtChainBottom); ac++;
 354       XtSetArg (av [ac], XtNresizable, True); ac++;
 355       sprintf (button_name, "button%d", ++bc);
 356       button = XtCreateManagedWidget (button_name, commandWidgetClass,
 357                                       dialog, av, ac);
 358     }
 359   if (right_buttons)
 360     {
 361       /* Create a separator
 362
 363          I want the separator to take up the slack between the buttons on
 364          the right and the buttons on the left (that is I want the buttons
 365          after the separator to be packed against the right edge of the
 366          window) but I can't seem to make it do it.
 367        */
 368       ac = 0;
 369       XtSetArg (av [ac], XtNfromHoriz, button); ac++;
 370 /*  XtSetArg (av [ac], XtNfromVert, XtNameToWidget (dialog, "label")); ac++; */
 371       XtSetArg (av [ac], XtNleft, XtChainLeft); ac++;
 372       XtSetArg (av [ac], XtNright, XtChainRight); ac++;
 373       XtSetArg (av [ac], XtNtop, XtChainBottom); ac++;
 374       XtSetArg (av [ac], XtNbottom, XtChainBottom); ac++;
 375       XtSetArg (av [ac], XtNlabel, ""); ac++;
 376       XtSetArg (av [ac], XtNwidth, 30); ac++;   /* #### aaack!! */
 377       XtSetArg (av [ac], XtNborderWidth, 0); ac++;
 378       XtSetArg (av [ac], XtNshapeStyle, XmuShapeRectangle); ac++;
 379       XtSetArg (av [ac], XtNresizable, False); ac++;
 380       XtSetArg (av [ac], XtNsensitive, False); ac++;
 381       button = XtCreateManagedWidget ("separator",
 382                                       /* labelWidgetClass, */
 383                                       /* This has to be Command to fake out
 384                                          the Dialog widget... */
 385                                       commandWidgetClass,
 386                                       dialog, av, ac);
 387     }
 388   for (i = 0; i < right_buttons; i++)
 389     {
 390       ac = 0;
 391       XtSetArg (av [ac], XtNfromHoriz, button); ac++;
 392       XtSetArg (av [ac], XtNleft, XtChainRight); ac++;
 393       XtSetArg (av [ac], XtNright, XtChainRight); ac++;
 394       XtSetArg (av [ac], XtNtop, XtChainBottom); ac++;
 395       XtSetArg (av [ac], XtNbottom, XtChainBottom); ac++;
 396       XtSetArg (av [ac], XtNresizable, True); ac++;
 397       sprintf (button_name, "button%d", ++bc);
 398       button = XtCreateManagedWidget (button_name, commandWidgetClass,
 399                                       dialog, av, ac);
 400     }
 401
 402   return dialog;
 403 }
 404
 405 Widget
 406 xaw_create_dialog (instance)
 407      widget_instance* instance;
 408 {
 409   char *name = instance->info->type;
 410   Widget parent = instance->parent;
 411   Widget widget;
 412   Boolean pop_up_p = instance->pop_up_p;
 413   char *shell_name = 0;
 414   char *icon_name = 0;
 415   Boolean text_input_slot = False;
 416   Boolean radio_box = False;
 417   Boolean list = False;
 418   int total_buttons;
 419   int left_buttons = 0;
 420   int right_buttons = 1;
 421
 422   switch (name [0]) {
 423   case 'E': case 'e':
 424     icon_name = "dbox-error";
 425     shell_name = "Error";
 426     break;
 427
 428   case 'I': case 'i':
 429     icon_name = "dbox-info";
 430     shell_name = "Information";
 431     break;
 432
 433   case 'L': case 'l':
 434     list = True;
 435     icon_name = "dbox-question";
 436     shell_name = "Prompt";
 437     break;
 438
 439   case 'P': case 'p':
 440     text_input_slot = True;
 441     icon_name = "dbox-question";
 442     shell_name = "Prompt";
 443     break;
 444
 445   case 'Q': case 'q':
 446     icon_name = "dbox-question";
 447     shell_name = "Question";
 448     break;
 449   }
 450
 451   total_buttons = name [1] - '0';
 452
 453   if (name [3] == 'T' || name [3] == 't')
 454     {
 455       text_input_slot = False;
 456       radio_box = True;
 457     }
 458   else if (name [3])
 459     right_buttons = name [4] - '0';
 460
 461   left_buttons = total_buttons - right_buttons;
 462
 463   widget = make_dialog (name, parent, pop_up_p,
 464                         shell_name, icon_name, text_input_slot, radio_box,
 465                         list, left_buttons, right_buttons);
 466
 467   return widget;
 468 }
 469
 470
 471 static void
 472 xaw_generic_callback (widget, closure, call_data)
 473      Widget widget;
 474      XtPointer closure;
 475      XtPointer call_data;
 476 {
 477   widget_instance *instance = (widget_instance *) closure;
 478   Widget instance_widget;
 479   LWLIB_ID id;
 480   XtPointer user_data;
 481
 482   lw_internal_update_other_instances (widget, closure, call_data);
 483
 484   if (! instance)
 485     return;
 486   if (widget->core.being_destroyed)
 487     return;
 488
 489   instance_widget = instance->widget;
 490   if (!instance_widget)
 491     return;
 492
 493   id = instance->info->id;
 494
 495 #if 0
 496   user_data = NULL;
 497   XtVaGetValues (widget, XtNuserData, &user_data, NULL);
 498 #else
 499   /* Damn!  Athena doesn't give us a way to hang our own data on the
 500      buttons, so we have to go find it...  I guess this assumes that
 501      all instances of a button have the same call data. */
 502   {
 503     widget_value *val = instance->info->val->contents;
 504     char *name = XtName (widget);
 505     while (val)
 506       {
 507         if (val->name && !strcmp (val->name, name))
 508           break;
 509         val = val->next;
 510       }
 511     if (! val) abort ();
 512     user_data = val->call_data;
 513   }
 514 #endif
 515
 516   if (instance->info->selection_cb)
 517     instance->info->selection_cb (widget, id, user_data);
 518 }
 519
 520 static void
 521 wm_delete_window (w, closure, call_data)
 522      Widget w;
 523      XtPointer closure;
 524      XtPointer call_data;
 525 {
 526   LWLIB_ID id;
 527   Cardinal nkids;
 528   int i;
 529   Widget *kids = 0;
 530   Widget widget, shell;
 531
 532   if (XtIsSubclass (w, dialogWidgetClass))
 533     shell = XtParent (w);
 534   else
 535     shell = w;
 536
 537   if (! XtIsSubclass (shell, shellWidgetClass))
 538     abort ();
 539   XtVaGetValues (shell, XtNnumChildren, &nkids, NULL);
 540   XtVaGetValues (shell, XtNchildren, &kids, NULL);
 541   if (!kids || !*kids)
 542     abort ();
 543   for (i = 0; i < nkids; i++)
 544     {
 545       widget = kids[i];
 546       if (XtIsSubclass (widget, dialogWidgetClass))
 547         break;
 548     }
 549   id = lw_get_widget_id (widget);
 550   if (! id) abort ();
 551
 552   {
 553     widget_info *info = lw_get_widget_info (id);
 554     if (! info) abort ();
 555     if (info->selection_cb)
 556       info->selection_cb (widget, id, (XtPointer) -1);
 557   }
 558
 559   lw_destroy_all_widgets (id);
 560 }
 561
 562 \f
 563 /* Scrollbars */
 564
 565 #if 0
 566 static void
 567 xaw_scrollbar_scroll (widget, closure, call_data)
 568      Widget widget;
 569      XtPointer closure;
 570      XtPointer call_data;
 571 {
 572   widget_instance *instance = (widget_instance *) closure;
 573   LWLIB_ID id;
 574   scroll_event event_data;
 575
 576   if (!instance || widget->core.being_destroyed)
 577     return;
 578
 579   id = instance->info->id;
 580   event_data.slider_value = 0;
 581   event_data.time = 0;
 582
 583   if ((int) call_data > 0)
 584     event_data.action = SCROLLBAR_PAGE_DOWN;
 585   else
 586     event_data.action = SCROLLBAR_PAGE_UP;
 587
 588   if (instance->info->pre_activate_cb)
 589     instance->info->pre_activate_cb (widget, id, (XtPointer) &event_data);
 590 }
 591 #endif
 592
 593 #if 0
 594 static void
 595 xaw_scrollbar_jump (widget, closure, call_data)
 596      Widget widget;
 597      XtPointer closure;
 598      XtPointer call_data;
 599 {
 600   widget_instance *instance = (widget_instance *) closure;
 601   LWLIB_ID id;
 602   scroll_event event_data;
 603   scrollbar_values *val =
 604     (scrollbar_values *) instance->info->val->scrollbar_data;
 605   float percent;
 606
 607   if (!instance || widget->core.being_destroyed)
 608     return;
 609
 610   id = instance->info->id;
 611
 612   percent = * (float *) call_data;
 613   event_data.slider_value =
 614     (int) (percent * (float) (val->maximum - val->minimum)) + val->minimum;
 615
 616   event_data.time = 0;
 617   event_data.action = SCROLLBAR_DRAG;
 618
 619   if (instance->info->pre_activate_cb)
 620     instance->info->pre_activate_cb (widget, id, (XtPointer) &event_data);
 621 }
 622 #endif
 623
 624 static Widget
 625 xaw_create_scrollbar (instance)
 626      widget_instance *instance;
 627 {
 628 #if 0
 629   Arg av[20];
 630   int ac = 0;
 631   Dimension width;
 632   Widget scrollbar;
 633
 634   XtVaGetValues (instance->parent, XtNwidth, &width, NULL);
 635
 636   XtSetArg (av[ac], XtNshowGrip, 0); ac++;
 637   XtSetArg (av[ac], XtNresizeToPreferred, 1); ac++;
 638   XtSetArg (av[ac], XtNallowResize, True); ac++;
 639   XtSetArg (av[ac], XtNskipAdjust, True); ac++;
 640   XtSetArg (av[ac], XtNwidth, width); ac++;
 641   XtSetArg (av[ac], XtNmappedWhenManaged, True); ac++;
 642
 643   scrollbar =
 644     XtCreateWidget (instance->info->name, scrollbarWidgetClass,
 645                     instance->parent, av, ac);
 646
 647   /* We have to force the border width to be 0 otherwise the
 648      geometry manager likes to start looping for awhile... */
 649   XtVaSetValues (scrollbar, XtNborderWidth, 0, NULL);
 650
 651   XtRemoveAllCallbacks (scrollbar, "jumpProc");
 652   XtRemoveAllCallbacks (scrollbar, "scrollProc");
 653
 654   XtAddCallback (scrollbar, "jumpProc", xaw_scrollbar_jump,
 655                  (XtPointer) instance);
 656   XtAddCallback (scrollbar, "scrollProc", xaw_scrollbar_scroll,
 657                  (XtPointer) instance);
 658
 659   return scrollbar;
 660 #else
 661   return NULL;
 662 #endif
 663 }
 664
 665 static Widget
 666 xaw_create_main (instance)
 667      widget_instance *instance;
 668 {
 669   Arg al[1];
 670   int ac;
 671
 672   /* Create a vertical Paned to hold menubar */
 673   ac = 0;
 674   XtSetArg (al[ac], XtNborderWidth, 0); ac++;
 675   return XtCreateWidget (instance->info->name, panedWidgetClass,
 676                          instance->parent, al, ac);
 677 }
 678
 679 widget_creation_entry
 680 xaw_creation_table [] =
 681 {
 682   {"scrollbar",                 xaw_create_scrollbar},
 683   {"main",                      xaw_create_main},
 684   {NULL, NULL}
 685 };
 686
 687 /* arch-tag: fbbd3589-ae1c-41a0-9142-f628cfee6564
 688    (do not change this comment) */