src/widget.c

   1 /* The emacs frame widget.
   2    Copyright (C) 1992-1993, 2000-2015 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 3 of the License, or
   9 (at your option) 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.  If not, see <http://www.gnu.org/licenses/>.  */
  18
  19 /* Emacs 19 face widget ported by Fred Pierresteguy */
  20
  21 /* This file has been censored by the Communications Decency Act.
  22    That law was passed under the guise of a ban on pornography, but
  23    it bans far more than that.  This file did not contain pornography,
  24    but it was censored nonetheless.
  25
  26    For information on US government censorship of the Internet, and
  27    what you can do to bring back freedom of the press, see the web
  28    site http://www.vtw.org/
  29    */
  30
  31 #include <config.h>
  32 #include <stdio.h>
  33
  34 #include "lisp.h"
  35 #include "xterm.h"
  36
  37 #include "keyboard.h"
  38 #include "frame.h"
  39 #include "window.h"
  40
  41 #include "dispextern.h"
  42 #include "blockinput.h"
  43
  44 #include <X11/StringDefs.h>
  45 #include <X11/IntrinsicP.h>
  46 #include <X11/cursorfont.h>
  47 #include "widgetprv.h"
  48 #include <X11/ObjectP.h>
  49 #include <X11/Shell.h>
  50 #include <X11/ShellP.h>
  51 #include "../lwlib/lwlib.h"
  52
  53 #include "character.h"
  54 #include "font.h"
  55
  56
  57 static void EmacsFrameInitialize (Widget request, Widget new, ArgList dum1, Cardinal *dum2);
  58 static void EmacsFrameDestroy (Widget widget);
  59 static void EmacsFrameRealize (Widget widget, XtValueMask *mask, XSetWindowAttributes *attrs);
  60 static void EmacsFrameResize (Widget widget);
  61 static XtGeometryResult EmacsFrameQueryGeometry (Widget widget, XtWidgetGeometry *request, XtWidgetGeometry *result);
  62
  63
  64 #undef XtOffset
  65 #define XtOffset(p_type,field) \
  66         ((Cardinal) (((char *) (&(((p_type)0)->field))) - ((char *)0)))
  67 #define offset(field) XtOffset (EmacsFrame, emacs_frame.field)
  68
  69 static XtResource resources[] = {
  70   {XtNgeometry, XtCGeometry, XtRString, sizeof (String),
  71      offset (geometry), XtRString, (XtPointer) 0},
  72   {XtNiconic, XtCIconic, XtRBoolean, sizeof (Boolean),
  73      offset (iconic), XtRImmediate, (XtPointer) False},
  74
  75   {XtNemacsFrame, XtCEmacsFrame, XtRPointer, sizeof (XtPointer),
  76      offset (frame), XtRImmediate, 0},
  77
  78   {XtNminibuffer, XtCMinibuffer, XtRInt, sizeof (int),
  79      offset (minibuffer), XtRImmediate, (XtPointer)0},
  80   {XtNunsplittable, XtCUnsplittable, XtRBoolean, sizeof (Boolean),
  81      offset (unsplittable), XtRImmediate, (XtPointer)0},
  82   {XtNinternalBorderWidth, XtCInternalBorderWidth, XtRInt, sizeof (int),
  83      offset (internal_border_width), XtRImmediate, (XtPointer)4},
  84   {XtNinterline, XtCInterline, XtRInt, sizeof (int),
  85      offset (interline), XtRImmediate, (XtPointer)0},
  86   {XtNforeground, XtCForeground, XtRPixel, sizeof (Pixel),
  87      offset (foreground_pixel), XtRString, "XtDefaultForeground"},
  88   {XtNcursorColor, XtCForeground, XtRPixel, sizeof (Pixel),
  89      offset (cursor_color), XtRString, "XtDefaultForeground"},
  90   {XtNbarCursor, XtCBarCursor, XtRBoolean, sizeof (Boolean),
  91      offset (bar_cursor), XtRImmediate, (XtPointer)0},
  92   {XtNvisualBell, XtCVisualBell, XtRBoolean, sizeof (Boolean),
  93      offset (visual_bell), XtRImmediate, (XtPointer)0},
  94   {XtNbellVolume, XtCBellVolume, XtRInt, sizeof (int),
  95      offset (bell_volume), XtRImmediate, (XtPointer)0},
  96 };
  97
  98 #undef offset
  99
 100 /*
 101 static XtActionsRec
 102 emacsFrameActionsTable [] = {
 103   {"keypress",  key_press},
 104   {"focus_in",  emacs_frame_focus_handler},
 105   {"focus_out", emacs_frame_focus_handler},
 106 };
 107
 108 static char
 109 emacsFrameTranslations [] = "\
 110 <KeyPress>: keypress()\n\
 111 <FocusIn>:  focus_in()\n\
 112 <FocusOut>: focus_out()\n\
 113 ";
 114 */
 115
 116 static EmacsFrameClassRec emacsFrameClassRec = {
 117     { /* core fields */
 118     /* superclass               */      &widgetClassRec,
 119     /* class_name               */      "EmacsFrame",
 120     /* widget_size              */      sizeof (EmacsFrameRec),
 121     /* class_initialize         */      0,
 122     /* class_part_initialize    */      0,
 123     /* class_inited             */      FALSE,
 124     /* initialize               */      EmacsFrameInitialize,
 125     /* initialize_hook          */      0,
 126     /* realize                  */      EmacsFrameRealize,
 127     /* actions                  */      0, /*emacsFrameActionsTable*/
 128     /* num_actions              */      0, /*XtNumber (emacsFrameActionsTable)*/
 129     /* resources                */      resources,
 130     /* resource_count           */      XtNumber (resources),
 131     /* xrm_class                */      NULLQUARK,
 132     /* compress_motion          */      TRUE,
 133     /* compress_exposure        */      TRUE,
 134     /* compress_enterleave      */      TRUE,
 135     /* visible_interest         */      FALSE,
 136     /* destroy                  */      EmacsFrameDestroy,
 137     /* resize                   */      EmacsFrameResize,
 138     /* expose                   */      XtInheritExpose,
 139
 140     /* Emacs never does XtSetvalues on this widget, so we have no code
 141        for it. */
 142     /* set_values               */      0, /* Not supported */
 143     /* set_values_hook          */      0,
 144     /* set_values_almost        */      XtInheritSetValuesAlmost,
 145     /* get_values_hook          */      0,
 146     /* accept_focus             */      XtInheritAcceptFocus,
 147     /* version                  */      XtVersion,
 148     /* callback_private         */      0,
 149     /* tm_table                 */      0, /*emacsFrameTranslations*/
 150     /* query_geometry           */      EmacsFrameQueryGeometry,
 151     /* display_accelerator      */      XtInheritDisplayAccelerator,
 152     /* extension                */      0
 153     }
 154 };
 155
 156 WidgetClass emacsFrameClass = (WidgetClass) &emacsFrameClassRec;
 157
 158 static void
 159 get_default_char_pixel_size (EmacsFrame ew, int *pixel_width, int *pixel_height)
 160 {
 161   struct frame* f = ew->emacs_frame.frame;
 162   *pixel_width = FRAME_COLUMN_WIDTH (f);
 163   *pixel_height = FRAME_LINE_HEIGHT (f);
 164 }
 165
 166 static void
 167 pixel_to_char_size (EmacsFrame ew, Dimension pixel_width, Dimension pixel_height, int *char_width, int *char_height)
 168 {
 169   struct frame* f = ew->emacs_frame.frame;
 170   *char_width = FRAME_PIXEL_WIDTH_TO_TEXT_COLS (f, (int) pixel_width);
 171   *char_height = FRAME_PIXEL_HEIGHT_TO_TEXT_LINES (f, (int) pixel_height);
 172 }
 173
 174 static void
 175 pixel_to_text_size (EmacsFrame ew, Dimension pixel_width, Dimension pixel_height, int *text_width, int *text_height)
 176 {
 177   struct frame* f = ew->emacs_frame.frame;
 178   *text_width = FRAME_PIXEL_TO_TEXT_WIDTH (f, (int) pixel_width);
 179   *text_height = FRAME_PIXEL_TO_TEXT_HEIGHT (f, (int) pixel_height);
 180 }
 181
 182 static void
 183 char_to_pixel_size (EmacsFrame ew, int char_width, int char_height, Dimension *pixel_width, Dimension *pixel_height)
 184 {
 185   struct frame* f = ew->emacs_frame.frame;
 186   *pixel_width = FRAME_TEXT_COLS_TO_PIXEL_WIDTH (f, char_width);
 187   *pixel_height = FRAME_TEXT_LINES_TO_PIXEL_HEIGHT (f, char_height);
 188 }
 189
 190 static void
 191 round_size_to_char (EmacsFrame ew, Dimension in_width, Dimension in_height, Dimension *out_width, Dimension *out_height)
 192 {
 193   int char_width;
 194   int char_height;
 195   pixel_to_char_size (ew, in_width, in_height, &char_width, &char_height);
 196   char_to_pixel_size (ew, char_width, char_height, out_width, out_height);
 197 }
 198
 199 static Widget
 200 get_wm_shell (Widget w)
 201 {
 202   Widget wmshell;
 203
 204   for (wmshell = XtParent (w);
 205        wmshell && !XtIsWMShell (wmshell);
 206        wmshell = XtParent (wmshell));
 207
 208   return wmshell;
 209 }
 210
 211 #if 0 /* Currently not used.  */
 212
 213 static void
 214 mark_shell_size_user_specified (Widget wmshell)
 215 {
 216   if (! XtIsWMShell (wmshell)) emacs_abort ();
 217   /* This is kind of sleazy, but I can't see how else to tell it to make it
 218      mark the WM_SIZE_HINTS size as user specified when appropriate. */
 219   ((WMShellWidget) wmshell)->wm.size_hints.flags |= USSize;
 220 }
 221
 222 #endif
 223
 224
 225 /* Can't have static frame locals because of some broken compilers.
 226    Normally, initializing a variable like this doesn't work in emacs,
 227    but it's ok in this file because it must come after lastfile (and
 228    thus have its data not go into text space) because Xt needs to
 229    write to initialized data objects too.
 230  */
 231 #if 0
 232 static Boolean first_frame_p = True;
 233 #endif
 234
 235 static void
 236 set_frame_size (EmacsFrame ew)
 237 {
 238   /* The widget hierarchy is
 239
 240         argv[0]                 emacsShell      pane    Frame-NAME
 241         ApplicationShell        EmacsShell      Paned   EmacsFrame
 242
 243      We accept geometry specs in this order:
 244
 245         *Frame-NAME.geometry
 246         *EmacsFrame.geometry
 247         Emacs.geometry
 248
 249      Other possibilities for widget hierarchies might be
 250
 251         argv[0]                 frame           pane    Frame-NAME
 252         ApplicationShell        EmacsShell      Paned   EmacsFrame
 253      or
 254         argv[0]                 Frame-NAME      pane    Frame-NAME
 255         ApplicationShell        EmacsShell      Paned   EmacsFrame
 256      or
 257         argv[0]                 Frame-NAME      pane    emacsTextPane
 258         ApplicationShell        EmacsFrame      Paned   EmacsTextPane
 259
 260      With the current setup, the text-display-area is the part which is
 261      an emacs "frame", since that's the only part managed by emacs proper
 262      (the menubar and the parent of the menubar and all that sort of thing
 263      are managed by lwlib.)
 264
 265      The EmacsShell widget is simply a replacement for the Shell widget
 266      which is able to deal with using an externally-supplied window instead
 267      of always creating its own.  It is not actually emacs specific, and
 268      should possibly have class "Shell" instead of "EmacsShell" to simplify
 269      the resources.
 270
 271    */
 272
 273   /* Hairily merged geometry */
 274   unsigned int w = FRAME_COLS (ew->emacs_frame.frame);
 275   unsigned int h = FRAME_LINES (ew->emacs_frame.frame);
 276
 277   Widget wmshell = get_wm_shell ((Widget) ew);
 278   /* Each Emacs shell is now independent and top-level.  */
 279
 280   if (! XtIsSubclass (wmshell, shellWidgetClass)) emacs_abort ();
 281
 282   /* We don't need this for the moment. The geometry is computed in
 283      xfns.c.  */
 284 #if 0
 285   /* If the EmacsFrame doesn't have a geometry but the shell does,
 286      treat that as the geometry of the frame.  (Is this bogus?
 287      I'm not sure.) */
 288   if (ew->emacs_frame.geometry == 0)
 289     XtVaGetValues (wmshell, XtNgeometry, &ew->emacs_frame.geometry, NULL);
 290
 291   /* If the Shell is iconic, then the EmacsFrame is iconic.  (Is
 292      this bogus? I'm not sure.) */
 293   if (!ew->emacs_frame.iconic)
 294     XtVaGetValues (wmshell, XtNiconic, &ew->emacs_frame.iconic, NULL);
 295
 296
 297   {
 298     char *geom = 0;
 299     XtVaGetValues (app_shell, XtNgeometry, &geom, NULL);
 300     if (geom)
 301       app_flags = XParseGeometry (geom, &app_x, &app_y, &app_w, &app_h);
 302   }
 303
 304   if (ew->emacs_frame.geometry)
 305     frame_flags = XParseGeometry (ew->emacs_frame.geometry,
 306                                    &frame_x, &frame_y,
 307                                    &frame_w, &frame_h);
 308
 309   if (first_frame_p)
 310     {
 311       /* If this is the first frame created:
 312          ====================================
 313
 314          - Use the ApplicationShell's size/position, if specified.
 315            (This is "Emacs.geometry", or the "-geometry" command line arg.)
 316          - Else use the EmacsFrame's size/position.
 317            (This is "*Frame-NAME.geometry")
 318
 319          - If the AppShell is iconic, the frame should be iconic.
 320
 321          AppShell comes first so that -geometry always applies to the first
 322          frame created, even if there is an "every frame" entry in the
 323          resource database.
 324        */
 325       if (app_flags & (XValue | YValue))
 326         {
 327           x = app_x; y = app_y;
 328           flags |= (app_flags & (XValue | YValue | XNegative | YNegative));
 329         }
 330       else if (frame_flags & (XValue | YValue))
 331         {
 332           x = frame_x; y = frame_y;
 333           flags |= (frame_flags & (XValue | YValue | XNegative | YNegative));
 334         }
 335
 336       if (app_flags & (WidthValue | HeightValue))
 337         {
 338           w = app_w; h = app_h;
 339           flags |= (app_flags & (WidthValue | HeightValue));
 340         }
 341       else if (frame_flags & (WidthValue | HeightValue))
 342         {
 343           w = frame_w; h = frame_h;
 344           flags |= (frame_flags & (WidthValue | HeightValue));
 345         }
 346
 347       /* If the AppShell is iconic, then the EmacsFrame is iconic. */
 348       if (!ew->emacs_frame.iconic)
 349         XtVaGetValues (app_shell, XtNiconic, &ew->emacs_frame.iconic, NULL);
 350
 351       first_frame_p = False;
 352     }
 353   else
 354     {
 355       /* If this is not the first frame created:
 356          ========================================
 357
 358          - use the EmacsFrame's size/position if specified
 359          - Otherwise, use the ApplicationShell's size, but not position.
 360
 361          So that means that one can specify the position of the first frame
 362          with "Emacs.geometry" or `-geometry'; but can only specify the
 363          position of subsequent frames with "*Frame-NAME.geometry".
 364
 365          AppShell comes second so that -geometry does not apply to subsequent
 366          frames when there is an "every frame" entry in the resource db,
 367          but does apply to the first frame.
 368        */
 369       if (frame_flags & (XValue | YValue))
 370         {
 371           x = frame_x; y = frame_y;
 372           flags |= (frame_flags & (XValue | YValue | XNegative | YNegative));
 373         }
 374
 375       if (frame_flags & (WidthValue | HeightValue))
 376         {
 377           w = frame_w; h = frame_h;
 378           flags |= (frame_flags & (WidthValue | HeightValue));
 379         }
 380       else if (app_flags & (WidthValue | HeightValue))
 381         {
 382           w = app_w;
 383           h = app_h;
 384           flags |= (app_flags & (WidthValue | HeightValue));
 385         }
 386     }
 387 #endif /* 0 */
 388   {
 389     Dimension pixel_width, pixel_height;
 390
 391     /* Take into account the size of the scrollbar.  Always use the
 392        number of columns occupied by the scroll bar here otherwise we
 393        might end up with a frame width that is not a multiple of the
 394        frame's character width which is bad for vertically split
 395        windows.  */
 396
 397 #if 0 /* This can run Lisp code, and it is dangerous to give
 398          out the frame to Lisp code before it officially exists.
 399          This is handled in Fx_create_frame so not needed here.  */
 400     change_frame_size (f, w, h, 1, 0, 0, 0);
 401 #endif
 402     char_to_pixel_size (ew, w, h, &pixel_width, &pixel_height);
 403     ew->core.width = pixel_width;
 404     ew->core.height = pixel_height;
 405
 406 #if 0 /* xfns.c takes care of this now.  */
 407     /* If a position was specified, assign it to the shell widget.
 408        (Else WM won't do anything with it.)
 409      */
 410     if (flags & (XValue | YValue))
 411       {
 412         /* the tricky things with the sign is to make sure that
 413            -0 is printed -0. */
 414         sprintf (shell_position, "=%c%d%c%d",
 415                  flags & XNegative ? '-' : '+', x < 0 ? -x : x,
 416                  flags & YNegative ? '-' : '+', y < 0 ? -y : y);
 417         XtVaSetValues (wmshell, XtNgeometry, xstrdup (shell_position), NULL);
 418       }
 419     else if (flags & (WidthValue | HeightValue))
 420       {
 421         sprintf (shell_position, "=%dx%d", pixel_width, pixel_height);
 422         XtVaSetValues (wmshell, XtNgeometry, xstrdup (shell_position), NULL);
 423       }
 424
 425     /* If the geometry spec we're using has W/H components, mark the size
 426        in the WM_SIZE_HINTS as user specified. */
 427     if (flags & (WidthValue | HeightValue))
 428       mark_shell_size_user_specified (wmshell);
 429
 430     /* Also assign the iconic status of the frame to the Shell, so that
 431        the WM sees it. */
 432     XtVaSetValues (wmshell, XtNiconic, ew->emacs_frame.iconic, NULL);
 433 #endif /* 0 */
 434   }
 435 }
 436
 437 static void
 438 update_wm_hints (EmacsFrame ew)
 439 {
 440   Widget wmshell = get_wm_shell ((Widget)ew);
 441   int cw;
 442   int ch;
 443   Dimension rounded_width;
 444   Dimension rounded_height;
 445   int char_width;
 446   int char_height;
 447   int base_width;
 448   int base_height;
 449   int min_rows = 0, min_cols = 0;
 450
 451   /* This happens when the frame is just created.  */
 452   if (! wmshell) return;
 453
 454   pixel_to_char_size (ew, ew->core.width, ew->core.height,
 455                       &char_width, &char_height);
 456   char_to_pixel_size (ew, char_width, char_height,
 457                       &rounded_width, &rounded_height);
 458   get_default_char_pixel_size (ew, &cw, &ch);
 459
 460   base_width = (wmshell->core.width - ew->core.width
 461                 + (rounded_width - (char_width * cw)));
 462   base_height = (wmshell->core.height - ew->core.height
 463                  + (rounded_height - (char_height * ch)));
 464
 465   /* This is kind of sleazy, but I can't see how else to tell it to
 466      make it mark the WM_SIZE_HINTS size as user specified.
 467    */
 468 /*  ((WMShellWidget) wmshell)->wm.size_hints.flags |= USSize;*/
 469
 470   XtVaSetValues (wmshell,
 471                  XtNbaseWidth, (XtArgVal) base_width,
 472                  XtNbaseHeight, (XtArgVal) base_height,
 473                  XtNwidthInc, (XtArgVal) (frame_resize_pixelwise ? 1 : cw),
 474                  XtNheightInc, (XtArgVal) (frame_resize_pixelwise ? 1 : ch),
 475                  XtNminWidth, (XtArgVal) (base_width + min_cols * cw),
 476                  XtNminHeight, (XtArgVal) (base_height + min_rows * ch),
 477                  NULL);
 478 }
 479
 480 void
 481 widget_update_wm_size_hints (Widget widget)
 482 {
 483   EmacsFrame ew = (EmacsFrame)widget;
 484   update_wm_hints (ew);
 485 }
 486
 487 static void
 488 update_various_frame_slots (EmacsFrame ew)
 489 {
 490   struct frame *f = ew->emacs_frame.frame;
 491
 492   /* Don't do that: It confuses the check in change_frame_size_1 whether
 493      the pixel size of the frame changed due to a change of the internal
 494      border width.  Bug#16736.  */
 495   if (false)
 496     {
 497       struct x_output *x = f->output_data.x;
 498       FRAME_PIXEL_HEIGHT (f) = ew->core.height + x->menubar_height;
 499       FRAME_PIXEL_WIDTH (f) = ew->core.width;
 500     }
 501
 502   f->internal_border_width = ew->emacs_frame.internal_border_width;
 503 }
 504
 505 static void
 506 update_from_various_frame_slots (EmacsFrame ew)
 507 {
 508   struct frame *f = ew->emacs_frame.frame;
 509   struct x_output *x = f->output_data.x;
 510   ew->core.height = FRAME_PIXEL_HEIGHT (f) - x->menubar_height;
 511   ew->core.width = FRAME_PIXEL_WIDTH (f);
 512   ew->core.background_pixel = FRAME_BACKGROUND_PIXEL (f);
 513   ew->emacs_frame.internal_border_width = f->internal_border_width;
 514   ew->emacs_frame.foreground_pixel = FRAME_FOREGROUND_PIXEL (f);
 515   ew->emacs_frame.cursor_color = x->cursor_pixel;
 516   ew->core.border_pixel = x->border_pixel;
 517 }
 518
 519 static void
 520 EmacsFrameInitialize (Widget request, Widget new, ArgList dum1, Cardinal *dum2)
 521 {
 522   EmacsFrame ew = (EmacsFrame)new;
 523
 524   if (!ew->emacs_frame.frame)
 525     {
 526       fprintf (stderr,
 527                "can't create an emacs frame widget without a frame\n");
 528       exit (1);
 529     }
 530
 531   update_from_various_frame_slots (ew);
 532   set_frame_size (ew);
 533 }
 534
 535 static void
 536 resize_cb (Widget widget,
 537            XtPointer closure,
 538            XEvent* event,
 539            Boolean* continue_to_dispatch)
 540 {
 541   EmacsFrameResize (widget);
 542 }
 543
 544
 545 static void
 546 EmacsFrameRealize (Widget widget, XtValueMask *mask, XSetWindowAttributes *attrs)
 547 {
 548   EmacsFrame ew = (EmacsFrame)widget;
 549
 550   /* This used to contain SubstructureRedirectMask, but this turns out
 551      to be a problem with XIM on Solaris, and events from that mask
 552      don't seem to be used.  Let's check that.  */
 553   attrs->event_mask = (STANDARD_EVENT_SET
 554                        | PropertyChangeMask
 555                        | SubstructureNotifyMask);
 556   *mask |= CWEventMask;
 557   XtCreateWindow (widget, InputOutput, (Visual *)CopyFromParent, *mask,
 558                   attrs);
 559   /* Some ConfigureNotify events does not end up in EmacsFrameResize so
 560      make sure we get them all.  Seen with xfcwm4 for example.  */
 561   XtAddRawEventHandler (widget, StructureNotifyMask, False, resize_cb, NULL);
 562   update_wm_hints (ew);
 563 }
 564
 565 static void
 566 EmacsFrameDestroy (Widget widget)
 567 {
 568   /* All GCs are now freed in x_free_frame_resources.  */
 569 }
 570
 571 static void
 572 EmacsFrameResize (Widget widget)
 573 {
 574   EmacsFrame ew = (EmacsFrame)widget;
 575   struct frame *f = ew->emacs_frame.frame;
 576   int width, height;
 577
 578   pixel_to_text_size (ew, ew->core.width, ew->core.height, &width, &height);
 579
 580   frame_size_history_add
 581     (f, QEmacsFrameResize, width, height,
 582      list2 (make_number (ew->core.width), make_number (ew->core.height)));
 583
 584   change_frame_size (f, width, height, 0, 1, 0, 1);
 585
 586   update_wm_hints (ew);
 587   update_various_frame_slots (ew);
 588
 589   cancel_mouse_face (f);
 590 }
 591
 592 static XtGeometryResult
 593 EmacsFrameQueryGeometry (Widget widget, XtWidgetGeometry *request, XtWidgetGeometry *result)
 594 {
 595   EmacsFrame ew = (EmacsFrame)widget;
 596
 597   int mask = request->request_mode;
 598   Dimension ok_width, ok_height;
 599
 600   if (mask & (CWWidth | CWHeight))
 601     {
 602       round_size_to_char (ew,
 603                           (mask & CWWidth) ? request->width : ew->core.width,
 604                           ((mask & CWHeight) ? request->height
 605                            : ew->core.height),
 606                           &ok_width, &ok_height);
 607       if ((mask & CWWidth) && (ok_width != request->width))
 608         {
 609           result->request_mode |= CWWidth;
 610           result->width = ok_width;
 611         }
 612       if ((mask & CWHeight) && (ok_height != request->height))
 613         {
 614           result->request_mode |= CWHeight;
 615           result->height = ok_height;
 616         }
 617     }
 618   return result->request_mode ? XtGeometryAlmost : XtGeometryYes;
 619 }
 620
 621 /* Special entry points */
 622 void
 623 EmacsFrameSetCharSize (Widget widget, int columns, int rows)
 624 {
 625   EmacsFrame ew = (EmacsFrame) widget;
 626   struct frame *f = ew->emacs_frame.frame;
 627
 628   if (!frame_inhibit_resize (f, 0, Qfont)
 629       && !frame_inhibit_resize (f, 1, Qfont))
 630     x_set_window_size (f, 0, columns, rows, 0);
 631 }
 632
 633 \f
 634 void
 635 widget_store_internal_border (Widget widget)
 636 {
 637   EmacsFrame ew = (EmacsFrame) widget;
 638   struct frame *f = ew->emacs_frame.frame;
 639
 640   ew->emacs_frame.internal_border_width = f->internal_border_width;
 641 }