src/widget.c

   1 /* The emacs frame widget.
   2    Copyright (C) 1992, 1993 Free Software Foundation, Inc.
   3
   4 This file is part of GNU Emacs.
   5
   6 GNU Emacs is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 2, or (at your option)
   9 any later version.
  10
  11 GNU Emacs is distributed in the hope that it will be useful,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 GNU General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GNU Emacs; see the file COPYING.  If not, write to
  18 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
  19
  20 /* Emacs 19 face widget ported by Fred Pierresteguy */
  21
  22 #include <stdio.h>
  23 #include <config.h>
  24 #include "lisp.h"
  25 #include "xterm.h"
  26
  27 #include "frame.h"
  28
  29 #include "dispextern.h"
  30
  31
  32 #include <X11/StringDefs.h>
  33 #include <X11/IntrinsicP.h>
  34 #include <X11/cursorfont.h>
  35 #include "widgetprv.h"
  36 #include <X11/ObjectP.h>
  37 #include <X11/Shell.h>
  38 #include <X11/ShellP.h>
  39
  40 #define max(a, b) ((a) > (b) ? (a) : (b))
  41
  42 /* This sucks: this is the first default that x-faces.el tries.  This won't
  43    be used unless neither the "Emacs.EmacsFrame" resource nor the
  44    "Emacs.EmacsFrame" resource is set; the frame
  45    may have the wrong default size if this font doesn't exist, but some other
  46    font that x-faces.el does.  The workaround is to specify some font in the
  47    resource database; I don't know a solution other than duplicating the font-
  48    searching code from x-faces.el in this file.
  49
  50    This also means that if "Emacs.EmacsFrame" is specified as a non-
  51    existent font, then Xt is going to substitute "XtDefaultFont" for it,
  52    which is a different size than this one.  The solution for this is to
  53    make x-faces.el try to use XtDefaultFont.  The problem with that is that
  54    XtDefaultFont is almost certainly variable-width.
  55
  56    #### Perhaps we could have this code explicitly set XtDefaultFont to this?
  57  */
  58 #define DEFAULT_FACE_FONT "-*-courier-medium-r-*-*-*-120-*-*-*-*-iso8859-*"
  59
  60
  61 static void EmacsFrameInitialize (/*Widget, Widget, ArgList, Cardinal * */);
  62 static void EmacsFrameDestroy (/* Widget */);
  63 static void EmacsFrameRealize (/* Widget, XtValueMask*, XSetWindowAttributes* */);
  64 void EmacsFrameResize (/* Widget widget */);
  65 static Boolean EmacsFrameSetValues (/* Widget, Widget, Widget,
  66                                      ArgList, Cardinal * */);
  67 static XtGeometryResult EmacsFrameQueryGeometry (/* Widget, XtWidgetGeometry*,
  68                                                   XtWidgetGeometry* */);
  69
  70
  71 #undef XtOffset
  72 #define XtOffset(p_type,field) \
  73         ((Cardinal) (((char *) (&(((p_type)0)->field))) - ((char *)0)))
  74 #define offset(field) XtOffset(EmacsFrame, emacs_frame.field)
  75
  76 static XtResource resources[] = {
  77   {XtNgeometry, XtCGeometry, XtRString, sizeof(String),
  78      offset (geometry), XtRString, (XtPointer) 0},
  79   {XtNiconic, XtCIconic, XtRBoolean, sizeof(Boolean),
  80      offset (iconic), XtRImmediate, (XtPointer) False},
  81
  82   {XtNemacsFrame, XtCEmacsFrame, XtRPointer, sizeof (XtPointer),
  83      offset (frame), XtRImmediate, 0},
  84
  85   {XtNminibuffer, XtCMinibuffer, XtRInt, sizeof (int),
  86      offset (minibuffer), XtRImmediate, (XtPointer)0},
  87   {XtNunsplittable, XtCUnsplittable, XtRBoolean, sizeof (Boolean),
  88      offset (unsplittable), XtRImmediate, (XtPointer)0},
  89   {XtNinternalBorderWidth, XtCInternalBorderWidth, XtRInt, sizeof (int),
  90      offset (internal_border_width), XtRImmediate, (XtPointer)4},
  91   {XtNinterline, XtCInterline, XtRInt, sizeof (int),
  92      offset (interline), XtRImmediate, (XtPointer)0},
  93   {XtNfont,  XtCFont, XtRFontStruct, sizeof(XFontStruct *),
  94      offset(font),XtRString, DEFAULT_FACE_FONT},
  95   {XtNforeground, XtCForeground, XtRPixel, sizeof(Pixel),
  96      offset(foreground_pixel), XtRString, "XtDefaultForeground"},
  97   {XtNcursorColor, XtCForeground, XtRPixel, sizeof(Pixel),
  98      offset(cursor_color), XtRString, "XtDefaultForeground"},
  99   {XtNbarCursor, XtCBarCursor, XtRBoolean, sizeof (Boolean),
 100      offset (bar_cursor), XtRImmediate, (XtPointer)0},
 101   {XtNvisualBell, XtCVisualBell, XtRBoolean, sizeof (Boolean),
 102      offset (visual_bell), XtRImmediate, (XtPointer)0},
 103   {XtNbellVolume, XtCBellVolume, XtRInt, sizeof (int),
 104      offset (bell_volume), XtRImmediate, (XtPointer)0},
 105 };
 106
 107 #undef offset
 108
 109 /*
 110 static XtActionsRec
 111 emacsFrameActionsTable [] = {
 112   {"keypress",  key_press},
 113   {"focus_in",  emacs_frame_focus_handler},
 114   {"focus_out", emacs_frame_focus_handler},
 115 };
 116
 117 static char
 118 emacsFrameTranslations [] = "\
 119 <KeyPress>: keypress()\n\
 120 <FocusIn>:  focus_in()\n\
 121 <FocusOut>: focus_out()\n\
 122 ";
 123 */
 124
 125 EmacsFrameClassRec emacsFrameClassRec = {
 126     { /* core fields */
 127     /* superclass               */      &widgetClassRec,
 128     /* class_name               */      "EmacsFrame",
 129     /* widget_size              */      sizeof(EmacsFrameRec),
 130     /* class_initialize         */      0,
 131     /* class_part_initialize    */      0,
 132     /* class_inited             */      FALSE,
 133     /* initialize               */      EmacsFrameInitialize,
 134     /* initialize_hook          */      0,
 135     /* realize                  */      EmacsFrameRealize,
 136     /* actions                  */      0, /*emacsFrameActionsTable*/
 137     /* num_actions              */      0, /*XtNumber (emacsFrameActionsTable)*/
 138     /* resources                */      resources,
 139     /* resource_count           */      XtNumber(resources),
 140     /* xrm_class                */      NULLQUARK,
 141     /* compress_motion          */      TRUE,
 142     /* compress_exposure        */      TRUE,
 143     /* compress_enterleave      */      TRUE,
 144     /* visible_interest         */      FALSE,
 145     /* destroy                  */      EmacsFrameDestroy,
 146     /* resize                   */      EmacsFrameResize,
 147     /* expose                   */      XtInheritExpose,
 148     /* set_values               */      EmacsFrameSetValues,
 149     /* set_values_hook          */      0,
 150     /* set_values_almost        */      XtInheritSetValuesAlmost,
 151     /* get_values_hook          */      0,
 152     /* accept_focus             */      XtInheritAcceptFocus,
 153     /* version                  */      XtVersion,
 154     /* callback_private         */      0,
 155     /* tm_table                 */      0, /*emacsFrameTranslations*/
 156     /* query_geometry           */      EmacsFrameQueryGeometry,
 157     /* display_accelerator      */      XtInheritDisplayAccelerator,
 158     /* extension                */      0
 159     }
 160 };
 161
 162 WidgetClass emacsFrameClass = (WidgetClass) &emacsFrameClassRec;
 163
 164 static void
 165 get_default_char_pixel_size (ew, pixel_width, pixel_height)
 166      EmacsFrame ew;
 167      int* pixel_width;
 168      int* pixel_height;
 169 {
 170   struct frame* f = ew->emacs_frame.frame;
 171   *pixel_width = FONT_WIDTH (f->display.x->font);
 172   *pixel_height = f->display.x->line_height;
 173 }
 174
 175 static void
 176 pixel_to_char_size (ew, pixel_width, pixel_height, char_width, char_height)
 177      EmacsFrame ew;
 178      Dimension pixel_width;
 179      Dimension pixel_height;
 180      int* char_width;
 181      int* char_height;
 182 {
 183   struct frame* f = ew->emacs_frame.frame;
 184   *char_width = PIXEL_TO_CHAR_WIDTH (f, pixel_width);
 185   *char_height = PIXEL_TO_CHAR_HEIGHT (f, pixel_height);
 186 }
 187
 188 static void
 189 char_to_pixel_size (ew, char_width, char_height, pixel_width, pixel_height)
 190      EmacsFrame ew;
 191      int char_width;
 192      int char_height;
 193      Dimension* pixel_width;
 194      Dimension* pixel_height;
 195 {
 196   struct frame* f = ew->emacs_frame.frame;
 197   *pixel_width = CHAR_TO_PIXEL_WIDTH (f, char_width);
 198   *pixel_height = CHAR_TO_PIXEL_HEIGHT (f, char_height);
 199 }
 200
 201 static void
 202 round_size_to_char (ew, in_width, in_height, out_width, out_height)
 203      EmacsFrame ew;
 204      Dimension in_width;
 205      Dimension in_height;
 206      Dimension* out_width;
 207      Dimension* out_height;
 208 {
 209   int char_width;
 210   int char_height;
 211   pixel_to_char_size (ew, in_width, in_height, &char_width, &char_height);
 212   char_to_pixel_size (ew, char_width, char_height, out_width, out_height);
 213 }
 214
 215 static Widget
 216 get_wm_shell (w)
 217      Widget w;
 218 {
 219   Widget wmshell;
 220
 221   for (wmshell = XtParent (w);
 222        wmshell && !XtIsWMShell (wmshell);
 223        wmshell = XtParent (wmshell));
 224
 225   return wmshell;
 226 }
 227
 228 static void
 229 mark_shell_size_user_specified (wmshell)
 230      Widget wmshell;
 231 {
 232   if (! XtIsWMShell (wmshell)) abort ();
 233   /* This is kind of sleazy, but I can't see how else to tell it to make it
 234      mark the WM_SIZE_HINTS size as user specified when appropriate. */
 235   ((WMShellWidget) wmshell)->wm.size_hints.flags |= USSize;
 236 }
 237
 238
 239 /* Can't have static frame locals because of some broken compilers.
 240    Normally, initializing a variable like this doesn't work in emacs,
 241    but it's ok in this file because it must come after lastfile (and
 242    thus have its data not go into text space) because Xt needs to
 243    write to initialized data objects too.
 244  */
 245 static Boolean first_frame_p = True;
 246
 247 static void
 248 set_frame_size (ew)
 249      EmacsFrame ew;
 250 {
 251   /* The widget hierarchy is
 252
 253         argv[0]                 emacsShell      pane    Frame-NAME
 254         ApplicationShell        EmacsShell      Paned   EmacsFrame
 255
 256      We accept geometry specs in this order:
 257
 258         *Frame-NAME.geometry
 259         *EmacsFrame.geometry
 260         Emacs.geometry
 261
 262      Other possibilities for widget hierarchies might be
 263
 264         argv[0]                 frame           pane    Frame-NAME
 265         ApplicationShell        EmacsShell      Paned   EmacsFrame
 266      or
 267         argv[0]                 Frame-NAME      pane    Frame-NAME
 268         ApplicationShell        EmacsShell      Paned   EmacsFrame
 269      or
 270         argv[0]                 Frame-NAME      pane    emacsTextPane
 271         ApplicationShell        EmacsFrame      Paned   EmacsTextPane
 272
 273      With the current setup, the text-display-area is the part which is
 274      an emacs "frame", since that's the only part managed by emacs proper
 275      (the menubar and the parent of the menubar and all that sort of thing
 276      are managed by lwlib.)
 277
 278      The EmacsShell widget is simply a replacement for the Shell widget
 279      which is able to deal with using an externally-supplied window instead
 280      of always creating its own.  It is not actually emacs specific, and
 281      should possibly have class "Shell" instead of "EmacsShell" to simplify
 282      the resources.
 283
 284    */
 285
 286   /* Geometry of the AppShell */
 287   int app_flags = 0;
 288   int app_x = 0;
 289   int app_y = 0;
 290   unsigned int app_w = 0;
 291   unsigned int app_h = 0;
 292
 293   /* Geometry of the EmacsFrame */
 294   int frame_flags = 0;
 295   int frame_x = 0;
 296   int frame_y = 0;
 297   unsigned int frame_w = 0;
 298   unsigned int frame_h = 0;
 299
 300   /* Hairily merged geometry */
 301   int x = 0;
 302   int y = 0;
 303   unsigned int w = ew->emacs_frame.frame->width;
 304   unsigned int h = ew->emacs_frame.frame->height;
 305   int flags = 0;
 306
 307   Widget wmshell = get_wm_shell ((Widget) ew);
 308   Widget app_shell = XtParent ((Widget) wmshell);
 309
 310   if (! XtIsSubclass (wmshell, shellWidgetClass)) abort ();
 311   if (! XtIsSubclass (app_shell, shellWidgetClass)) abort ();
 312
 313   /* We don't need this for the momment. The geometry is computed in
 314      xfns.c.  */
 315 #if 0
 316   /* If the EmacsFrame doesn't have a geometry but the shell does,
 317      treat that as the geometry of the frame.  (Is this bogus?
 318      I'm not sure.) */
 319   if (ew->emacs_frame.geometry == 0)
 320     XtVaGetValues (wmshell, XtNgeometry, &ew->emacs_frame.geometry, 0);
 321
 322   /* If the Shell is iconic, then the EmacsFrame is iconic.  (Is
 323      this bogus? I'm not sure.) */
 324   if (!ew->emacs_frame.iconic)
 325     XtVaGetValues (wmshell, XtNiconic, &ew->emacs_frame.iconic, 0);
 326
 327
 328   {
 329     char *geom = 0;
 330     XtVaGetValues (app_shell, XtNgeometry, &geom, 0);
 331     if (geom)
 332       app_flags = XParseGeometry (geom, &app_x, &app_y, &app_w, &app_h);
 333   }
 334
 335   if (ew->emacs_frame.geometry)
 336     frame_flags = XParseGeometry (ew->emacs_frame.geometry,
 337                                    &frame_x, &frame_y,
 338                                    &frame_w, &frame_h);
 339
 340   if (first_frame_p)
 341     {
 342       /* If this is the first frame created:
 343          ====================================
 344
 345          - Use the ApplicationShell's size/position, if specified.
 346            (This is "Emacs.geometry", or the "-geometry" command line arg.)
 347          - Else use the EmacsFrame's size/position.
 348            (This is "*Frame-NAME.geometry")
 349
 350          - If the AppShell is iconic, the frame should be iconic.
 351
 352          AppShell comes first so that -geometry always applies to the first
 353          frame created, even if there is an "every frame" entry in the
 354          resource database.
 355        */
 356       if (app_flags & (XValue | YValue))
 357         {
 358           x = app_x; y = app_y;
 359           flags |= (app_flags & (XValue | YValue | XNegative | YNegative));
 360         }
 361       else if (frame_flags & (XValue | YValue))
 362         {
 363           x = frame_x; y = frame_y;
 364           flags |= (frame_flags & (XValue | YValue | XNegative | YNegative));
 365         }
 366
 367       if (app_flags & (WidthValue | HeightValue))
 368         {
 369           w = app_w; h = app_h;
 370           flags |= (app_flags & (WidthValue | HeightValue));
 371         }
 372       else if (frame_flags & (WidthValue | HeightValue))
 373         {
 374           w = frame_w; h = frame_h;
 375           flags |= (frame_flags & (WidthValue | HeightValue));
 376         }
 377
 378       /* If the AppShell is iconic, then the EmacsFrame is iconic. */
 379       if (!ew->emacs_frame.iconic)
 380         XtVaGetValues (app_shell, XtNiconic, &ew->emacs_frame.iconic, 0);
 381
 382       first_frame_p = False;
 383     }
 384   else
 385     {
 386       /* If this is not the first frame created:
 387          ========================================
 388
 389          - use the EmacsFrame's size/position if specified
 390          - Otherwise, use the ApplicationShell's size, but not position.
 391
 392          So that means that one can specify the position of the first frame
 393          with "Emacs.geometry" or `-geometry'; but can only specify the
 394          position of subsequent frames with "*Frame-NAME.geometry".
 395
 396          AppShell comes second so that -geometry does not apply to subsequent
 397          frames when there is an "every frame" entry in the resource db,
 398          but does apply to the first frame.
 399        */
 400       if (frame_flags & (XValue | YValue))
 401         {
 402           x = frame_x; y = frame_y;
 403           flags |= (frame_flags & (XValue | YValue | XNegative | YNegative));
 404         }
 405
 406       if (frame_flags & (WidthValue | HeightValue))
 407         {
 408           w = frame_w; h = frame_h;
 409           flags |= (frame_flags & (WidthValue | HeightValue));
 410         }
 411       else if (app_flags & (WidthValue | HeightValue))
 412         {
 413           w = app_w;
 414           h = app_h;
 415           flags |= (app_flags & (WidthValue | HeightValue));
 416         }
 417     }
 418 #endif /* 0 */
 419   {
 420     struct frame* frame = ew->emacs_frame.frame;
 421     Dimension pixel_width, pixel_height;
 422     char shell_position [32];
 423
 424     /* Take into account the size of the scrollbar */
 425     frame->display.x->vertical_scroll_bar_extra
 426       = (FRAME_HAS_VERTICAL_SCROLL_BARS (frame)
 427          ? VERTICAL_SCROLL_BAR_PIXEL_WIDTH (frame)
 428          : 0);
 429
 430
 431     change_frame_size (frame, h, w, 1, 0);
 432     char_to_pixel_size (ew, w, h, &pixel_width, &pixel_height);
 433     ew->core.width = pixel_width;
 434     ew->core.height = pixel_height;
 435
 436 #if 0 /* xfns.c takes care of this now.  */
 437     /* If a position was specified, assign it to the shell widget.
 438        (Else WM won't do anything with it.)
 439      */
 440     if (flags & (XValue | YValue))
 441       {
 442         /* the tricky things with the sign is to make sure that
 443            -0 is printed -0. */
 444         int len;
 445         char *tem;
 446         sprintf (shell_position, "=%c%d%c%d",
 447                  flags & XNegative ? '-' : '+', x < 0 ? -x : x,
 448                  flags & YNegative ? '-' : '+', y < 0 ? -y : y);
 449         len = strlen (shell_position) + 1;
 450         tem = (char *) xmalloc (len);
 451         strncpy (tem, shell_position, len);
 452         XtVaSetValues (wmshell, XtNgeometry, tem, 0);
 453       }
 454     else if (flags & (WidthValue | HeightValue))
 455       {
 456         int len;
 457         char *tem;
 458         sprintf (shell_position, "=%dx%d", pixel_width, pixel_height);
 459         len = strlen (shell_position) + 1;
 460         tem = (char *) xmalloc (len);
 461         strncpy (tem, shell_position, len);
 462         XtVaSetValues (wmshell, XtNgeometry, tem, 0);
 463       }
 464
 465     /* If the geometry spec we're using has W/H components, mark the size
 466        in the WM_SIZE_HINTS as user specified. */
 467     if (flags & (WidthValue | HeightValue))
 468       mark_shell_size_user_specified (wmshell);
 469
 470     /* Also assign the iconic status of the frame to the Shell, so that
 471        the WM sees it. */
 472     XtVaSetValues (wmshell, XtNiconic, ew->emacs_frame.iconic, 0);
 473 #endif /* 0 */
 474   }
 475 }
 476
 477
 478 static void
 479 update_wm_hints (ew)
 480      EmacsFrame ew;
 481 {
 482   Widget wmshell = get_wm_shell ((Widget)ew);
 483   int cw;
 484   int ch;
 485   Dimension rounded_width;
 486   Dimension rounded_height;
 487   int char_width;
 488   int char_height;
 489   int base_width;
 490   int base_height;
 491   int min_rows = 0, min_cols = 0;
 492
 493   check_frame_size (ew->emacs_frame.frame, &min_rows, &min_cols);
 494
 495   pixel_to_char_size (ew, ew->core.width, ew->core.height,
 496                       &char_width, &char_height);
 497   char_to_pixel_size (ew, char_width, char_height,
 498                       &rounded_width, &rounded_height);
 499   get_default_char_pixel_size (ew, &cw, &ch);
 500
 501   base_width = (wmshell->core.width - ew->core.width
 502                 + (rounded_width - (char_width * cw)));
 503   base_height = (wmshell->core.height - ew->core.height
 504                 + (rounded_height - (char_height * ch)));
 505
 506   /* This is kind of sleazy, but I can't see how else to tell it to
 507      make it mark the WM_SIZE_HINTS size as user specified.
 508    */
 509 /*  ((WMShellWidget) wmshell)->wm.size_hints.flags |= USSize;*/
 510
 511   XtVaSetValues (wmshell,
 512                  XtNbaseWidth, base_width,
 513                  XtNbaseHeight, base_height,
 514                  XtNwidthInc, cw,
 515                  XtNheightInc, ch,
 516                  XtNminWidth, base_width + min_cols * cw,
 517                  XtNminHeight, base_height + min_rows * ch,
 518                  0);
 519 }
 520
 521 static void
 522 create_frame_gcs (ew)
 523      EmacsFrame ew;
 524 {
 525   struct frame* s = ew->emacs_frame.frame;
 526
 527   s->display.x->normal_gc =
 528     XCreateGC (XtDisplay (ew), RootWindowOfScreen (XtScreen (ew)), 0, 0);
 529   s->display.x->reverse_gc =
 530     XCreateGC (XtDisplay (ew), RootWindowOfScreen (XtScreen (ew)), 0, 0);
 531   s->display.x->cursor_gc =
 532     XCreateGC (XtDisplay (ew), RootWindowOfScreen (XtScreen (ew)), 0, 0);
 533 }
 534
 535 static void
 536 setup_frame_gcs (ew)
 537      EmacsFrame ew;
 538 {
 539   XGCValues gc_values;
 540   struct frame* s = ew->emacs_frame.frame;
 541   Pixmap blank_stipple, blank_tile;
 542
 543   static char cursor_bits[] =
 544     {
 545       0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 546       0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 547       0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 548       0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
 549     };
 550
 551   /* We have to initialize all of our GCs to have a stipple/tile, otherwise
 552      XGetGCValues returns uninitialized data when we query the stipple
 553      (instead of None or something sensible) and it makes things hard.
 554
 555      This should be fixed for real by not querying the GCs but instead having
 556      some GC-based cache instead of the current face-based cache which doesn't
 557      effectively cache all of the GC settings we need to use.
 558    */
 559
 560   blank_stipple =
 561     XCreateBitmapFromData (XtDisplay (ew), RootWindowOfScreen (XtScreen (ew)),
 562                            cursor_bits, 2, 2);
 563
 564   /* use fg = 0, bg = 1 below, but it's irrelevant since this pixmap should
 565      never actually get used as a background tile!
 566    */
 567   blank_tile =
 568     XCreatePixmapFromBitmapData (XtDisplay(ew),
 569                                  RootWindowOfScreen (XtScreen (ew)),
 570                                  cursor_bits, 2, 2, 0, 1, ew->core.depth);
 571
 572   /* Normal video */
 573   gc_values.font = ew->emacs_frame.font->fid;
 574   gc_values.foreground = ew->emacs_frame.foreground_pixel;
 575   gc_values.background = ew->core.background_pixel;
 576   gc_values.graphics_exposures = False;
 577   gc_values.stipple = blank_stipple;
 578   gc_values.tile = blank_tile;
 579   XChangeGC (XtDisplay (ew), s->display.x->normal_gc,
 580              (GCFont | GCForeground | GCBackground | GCGraphicsExposures
 581               | GCStipple | GCTile),
 582              &gc_values);
 583
 584   /* Reverse video style. */
 585   gc_values.font = ew->emacs_frame.font->fid;
 586   gc_values.foreground = ew->core.background_pixel;
 587   gc_values.background = ew->emacs_frame.foreground_pixel;
 588   gc_values.graphics_exposures = False;
 589   gc_values.stipple = blank_stipple;
 590   gc_values.tile = blank_tile;
 591   XChangeGC (XtDisplay (ew), s->display.x->reverse_gc,
 592              (GCFont | GCForeground | GCBackground | GCGraphicsExposures
 593               | GCStipple | GCTile),
 594              &gc_values);
 595
 596   /* Cursor has to have an empty stipple. */
 597   gc_values.font = ew->emacs_frame.font->fid;
 598   gc_values.foreground = ew->core.background_pixel;
 599   gc_values.background = ew->emacs_frame.cursor_color;
 600   gc_values.graphics_exposures = False;
 601   gc_values.tile = blank_tile;
 602   gc_values.stipple =
 603     XCreateBitmapFromData (XtDisplay (ew),
 604                            RootWindowOfScreen (XtScreen (ew)),
 605                            cursor_bits, 16, 16);
 606   XChangeGC (XtDisplay (ew), s->display.x->cursor_gc,
 607              (GCFont | GCForeground | GCBackground | GCGraphicsExposures
 608               | GCStipple | GCTile),
 609              &gc_values);
 610 }
 611
 612 static void
 613 update_various_frame_slots (ew)
 614      EmacsFrame ew;
 615 {
 616   struct x_display* x = ew->emacs_frame.frame->display.x;
 617   x->pixel_height = ew->core.height;
 618   x->pixel_width = ew->core.width;
 619   x->internal_border_width = ew->emacs_frame.internal_border_width;
 620
 621 }
 622
 623 static void
 624 update_from_various_frame_slots (ew)
 625      EmacsFrame ew;
 626 {
 627   struct x_display* x = ew->emacs_frame.frame->display.x;
 628   ew->core.height = x->pixel_height;
 629   ew->core.width = x->pixel_width;
 630   ew->core.background_pixel = x->background_pixel;
 631   ew->emacs_frame.internal_border_width = x->internal_border_width;
 632   ew->emacs_frame.font = x->font;
 633   ew->emacs_frame.foreground_pixel = x->foreground_pixel;
 634   ew->emacs_frame.cursor_color = x->cursor_pixel;
 635   ew->core.border_pixel = x->border_pixel;
 636 }
 637
 638 static void
 639 EmacsFrameInitialize (request, new, dum1, dum2)
 640      Widget request;
 641      Widget new;
 642      ArgList dum1;
 643      Cardinal *dum2;
 644 {
 645   EmacsFrame ew = (EmacsFrame)new;
 646
 647   if (!ew->emacs_frame.frame)
 648     {
 649       fprintf (stderr,
 650                "can't create an emacs frame widget without a frame\n");
 651       exit (1);
 652     }
 653
 654 #if 0 /* done in xfns.c */
 655   /* If the "Emacs.EmacsFrame.{default,Face}.{attributeFont,AttributeFont}"
 656      resource is set, then it always overrides "Emacs.EmacsFrame.{font,Font}".
 657      It's unfortunate that we have to do this, but we need to know the font
 658      size for frame-sizing purposes before the faces get initialized.  If
 659      the "default.attributeFont" isn't set, then we use the font of this
 660      EmacsFrame itself, defaulting to XtDefaultFont.  Up in the lisp code,
 661      the "default" face will use the frame's font if its own is not set,
 662      so everything stays in sync -- it's not possible for the frame's font
 663      and the default face's font to be different.
 664    */
 665   {
 666     XFontStruct *f = 0;
 667     XtResource face_res;
 668     face_res.resource_name = "attributeFont";
 669     face_res.resource_class = "AttributeFont";
 670     face_res.resource_type = XtRFontStruct;
 671     face_res.resource_size = sizeof (XFontStruct *);
 672     face_res.resource_offset = 0;
 673     face_res.default_type = XtRImmediate;
 674     face_res.default_addr = 0;
 675     XtGetSubresources ((Widget) ew, (XtPointer) &f, "default", "Face",
 676                        &face_res, 1, NULL, 0);
 677
 678     if (f)
 679         ew->emacs_frame.font = f;
 680     else if (! ew->emacs_frame.font)
 681       {
 682         fprintf (stderr, "emacs frame widget could not load a font\n");
 683         exit (1);
 684       }
 685   }
 686
 687 /* Update the font field in frame */
 688   ew->emacs_frame.frame->display.x->font = ew->emacs_frame.font;
 689 #endif
 690
 691   update_from_various_frame_slots (ew);
 692   set_frame_size (ew);
 693 /*create_frame_gcs (ew);
 694   setup_frame_gcs (ew);
 695   update_various_frame_slots (ew); */
 696 }
 697
 698
 699 static void
 700 EmacsFrameRealize (widget, mask, attrs)
 701      Widget widget;
 702      XtValueMask *mask;
 703      XSetWindowAttributes *attrs;
 704 {
 705   EmacsFrame ew = (EmacsFrame)widget;
 706
 707   attrs->event_mask = (KeyPressMask | ExposureMask | ButtonPressMask |
 708                        ButtonReleaseMask | StructureNotifyMask |
 709                        FocusChangeMask | PointerMotionHintMask |
 710                        PointerMotionMask | LeaveWindowMask | EnterWindowMask |
 711                        VisibilityChangeMask | PropertyChangeMask |
 712                        StructureNotifyMask | SubstructureNotifyMask |
 713                        SubstructureRedirectMask);
 714   *mask |= CWEventMask;
 715   XtCreateWindow (widget, InputOutput, (Visual *)CopyFromParent, *mask,
 716                   attrs);
 717   update_wm_hints (ew);
 718 }
 719
 720 extern void free_frame_faces (/* struct frame * */);
 721
 722 static void
 723 EmacsFrameDestroy (widget)
 724      Widget widget;
 725 {
 726   EmacsFrame ew = (EmacsFrame) widget;
 727   struct frame* s = ew->emacs_frame.frame;
 728
 729   if (! s) abort ();
 730   if (! s->display.x) abort ();
 731   if (! s->display.x->normal_gc) abort ();
 732
 733   /* this would be called from Fdelete_frame() but it needs to free some
 734      stuff after the widget has been finalized but before the widget has
 735      been freed. */
 736   free_frame_faces (s);
 737
 738   /* need to be careful that the face-freeing code doesn't free these too */
 739   XFreeGC (XtDisplay (widget), s->display.x->normal_gc);
 740   XFreeGC (XtDisplay (widget), s->display.x->reverse_gc);
 741   XFreeGC (XtDisplay (widget), s->display.x->cursor_gc);
 742 }
 743
 744 void
 745 EmacsFrameResize (widget)
 746      Widget widget;
 747 {
 748   EmacsFrame ew = (EmacsFrame)widget;
 749   struct frame *f = ew->emacs_frame.frame;
 750   int columns;
 751   int rows;
 752
 753   pixel_to_char_size (ew, ew->core.width, ew->core.height, &columns, &rows);
 754   change_frame_size (f, rows, columns, 1, 0);
 755   update_wm_hints (ew);
 756   update_various_frame_slots (ew);
 757 }
 758
 759 static Boolean
 760 EmacsFrameSetValues (cur_widget, req_widget, new_widget, dum1, dum2)
 761      Widget cur_widget;
 762      Widget req_widget;
 763      Widget new_widget;
 764      ArgList dum1;
 765      Cardinal *dum2;
 766 {
 767   EmacsFrame cur = (EmacsFrame)cur_widget;
 768   EmacsFrame new = (EmacsFrame)new_widget;
 769
 770   Boolean needs_a_refresh = False;
 771   Boolean has_to_recompute_size;
 772   Boolean has_to_recompute_gcs;
 773   Boolean has_to_update_hints;
 774
 775   int char_width, char_height;
 776   Dimension pixel_width;
 777   Dimension pixel_height;
 778
 779   has_to_recompute_gcs = (cur->emacs_frame.font != new->emacs_frame.font
 780                           || (cur->emacs_frame.foreground_pixel
 781                               != new->emacs_frame.foreground_pixel)
 782                           || (cur->core.background_pixel
 783                               != new->core.background_pixel)
 784                           );
 785
 786   has_to_recompute_size = (cur->emacs_frame.font != new->emacs_frame.font
 787                            && cur->core.width == new->core.width
 788                            && cur->core.height == new->core.height);
 789
 790   has_to_update_hints = (cur->emacs_frame.font != new->emacs_frame.font);
 791
 792   if (has_to_recompute_gcs)
 793     {
 794       setup_frame_gcs (new);
 795       needs_a_refresh = True;
 796     }
 797
 798   if (has_to_recompute_size)
 799     {
 800       pixel_width = new->core.width;
 801       pixel_height = new->core.height;
 802       pixel_to_char_size (new, pixel_width, pixel_height, &char_width,
 803                           &char_height);
 804       char_to_pixel_size (new, char_width, char_height, &pixel_width,
 805                           &pixel_height);
 806       new->core.width = pixel_width;
 807       new->core.height = pixel_height;
 808
 809       change_frame_size (new->emacs_frame.frame, char_height, char_width,
 810                           1, 0);
 811       needs_a_refresh = True;
 812     }
 813
 814   if (has_to_update_hints)
 815     update_wm_hints (new);
 816
 817   update_various_frame_slots (new);
 818
 819   /* #### This doesn't work, I haven't been able to find ANY kludge that
 820      will let (x-create-frame '((iconic . t))) work.  It seems that changes
 821      to wm_shell's iconic slot have no effect after it has been realized,
 822      and calling XIconifyWindow doesn't work either (even thought the window
 823      has been created.)  Perhaps there is some property we could smash
 824      directly, but I'm sick of this for now.  Xt is a steaming pile of shit!
 825    */
 826   if (cur->emacs_frame.iconic != new->emacs_frame.iconic)
 827     {
 828       Widget wmshell = get_wm_shell ((Widget) cur);
 829       XtVaSetValues (wmshell, XtNiconic, new->emacs_frame.iconic, 0);
 830     }
 831
 832   return needs_a_refresh;
 833 }
 834
 835 static XtGeometryResult
 836 EmacsFrameQueryGeometry (widget, request, result)
 837      Widget widget;
 838      XtWidgetGeometry* request;
 839      XtWidgetGeometry* result;
 840 {
 841   EmacsFrame ew = (EmacsFrame)widget;
 842
 843   int mask = request->request_mode;
 844   Dimension ok_width, ok_height;
 845
 846   if (mask & (CWWidth | CWHeight))
 847     {
 848       round_size_to_char (ew,
 849                           (mask & CWWidth) ? request->width : ew->core.width,
 850                           ((mask & CWHeight) ? request->height
 851                            : ew->core.height),
 852                           &ok_width, &ok_height);
 853       if ((mask & CWWidth) && (ok_width != request->width))
 854         {
 855           result->request_mode |= CWWidth;
 856           result->width = ok_width;
 857         }
 858       if ((mask & CWHeight) && (ok_height != request->height))
 859         {
 860           result->request_mode |= CWHeight;
 861           result->height = ok_height;
 862         }
 863     }
 864   return result->request_mode ? XtGeometryAlmost : XtGeometryYes;
 865 }
 866
 867 /* Special entrypoints */
 868 void
 869 EmacsFrameSetCharSize (widget, columns, rows)
 870      Widget widget;
 871      int columns;
 872      int rows;
 873 {
 874   EmacsFrame ew = (EmacsFrame) widget;
 875   Dimension pixel_width, pixel_height, granted_width, granted_height;
 876   XtGeometryResult result;
 877   struct frame *f = ew->emacs_frame.frame;
 878   Arg al[2];
 879   int ac = 0;
 880
 881   if (columns < 3) columns = 3;  /* no way buddy */
 882   if (rows < 3) rows = 3;
 883
 884   check_frame_size (f, &rows, &columns);
 885   f->display.x->vertical_scroll_bar_extra
 886     = (FRAME_HAS_VERTICAL_SCROLL_BARS (f)
 887        ? VERTICAL_SCROLL_BAR_PIXEL_WIDTH (f)
 888        : 0);
 889   char_to_pixel_size (ew, columns, rows, &pixel_width, &pixel_height);
 890
 891   /* Recompute the entire geometry management.  */
 892   if (ew->core.width != pixel_width || ew->core.height != pixel_height)
 893     {
 894       int hdelta = pixel_height - ew->core.height;
 895       int column_widget_height = f->display.x->column_widget->core.height;
 896       XawPanedSetRefigureMode (f->display.x->column_widget, False);
 897
 898       ac = 0;
 899       XtSetArg (al[ac], XtNheight, pixel_height); ac++;
 900       XtSetArg (al[ac], XtNwidth, pixel_width); ac++;
 901       XtSetValues ((Widget) ew, al, ac);
 902
 903       ac = 0;
 904       XtSetArg (al[ac], XtNheight, column_widget_height + hdelta); ac++;
 905       XtSetArg (al[ac], XtNwidth, pixel_width); ac++;
 906       XtSetValues (f->display.x->column_widget, al, ac);
 907
 908       XawPanedSetRefigureMode (f->display.x->column_widget, True);
 909     }
 910
 911   /* We've set {FRAME,PIXEL}_{WIDTH,HEIGHT} to the values we hope to
 912      receive in the ConfigureNotify event; if we get what we asked
 913      for, then the event won't cause the screen to become garbaged, so
 914      we have to make sure to do it here.  */
 915   SET_FRAME_GARBAGED (f);
 916 }