src/xterm.h

   1 /* Definitions and headers for communication with X protocol.
   2    Copyright (C) 1989, 1993, 1994, 1998, 1999, 2000, 2001, 2001
   3    Free Software Foundation, Inc.
   4
   5 This file is part of GNU Emacs.
   6
   7 GNU Emacs is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 2, or (at your option)
  10 any later version.
  11
  12 GNU Emacs is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GNU Emacs; see the file COPYING.  If not, write to
  19 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  20 Boston, MA 02111-1307, USA.  */
  21
  22 #include <X11/Xlib.h>
  23 #include <X11/cursorfont.h>
  24 #include <X11/Xutil.h>
  25 #include <X11/keysym.h>
  26 #include <X11/Xatom.h>
  27 #include <X11/Xresource.h>
  28
  29 #ifdef USE_X_TOOLKIT
  30 #include <X11/StringDefs.h>
  31 #include <X11/IntrinsicP.h>     /* CoreP.h needs this */
  32 #include <X11/CoreP.h>          /* foul, but we need this to use our own
  33                                    window inside a widget instead of one
  34                                    that Xt creates... */
  35 #include <X11/StringDefs.h>
  36 #endif
  37
  38 /* The class of this X application.  */
  39 #define EMACS_CLASS "Emacs"
  40 \f
  41 /* Bookkeeping to distinguish X versions.  */
  42
  43 /* HAVE_X11R4 is defined if we have the features of X11R4.  It should
  44    be defined when we're using X11R5, since X11R5 has the features of
  45    X11R4.  If, in the future, we find we need more of these flags
  46    (HAVE_X11R5, for example), code should always be written to test
  47    the most recent flag first:
  48
  49       #ifdef HAVE_X11R5
  50         ...
  51       #elif HAVE_X11R4
  52         ...
  53       #elif HAVE_X11
  54         ...
  55       #endif
  56
  57    If you ever find yourself writing a "#ifdef HAVE_FOO" clause that
  58    looks a lot like another one, consider moving the text into a macro
  59    whose definition is configuration-dependent, but whose usage is
  60    universal - like the stuff in systime.h.
  61
  62    It turns out that we can auto-detect whether we're being compiled
  63    with X11R3 or X11R4 by looking for the flag macros for R4 structure
  64    members that R3 doesn't have.  */
  65 #ifdef PBaseSize
  66 /* AIX 3.1's X is somewhere between X11R3 and X11R4.  It has
  67    PBaseSize, but not XWithdrawWindow, XSetWMName, XSetWMNormalHints,
  68    XSetWMIconName.
  69    AIX 3.2 is at least X11R4.  */
  70 #if (!defined AIX) || (defined AIX3_2)
  71 #define HAVE_X11R4
  72 #endif
  73 #endif
  74
  75 #ifdef HAVE_X11R5
  76 /* In case someone has X11R5 on AIX 3.1,
  77    make sure HAVE_X11R4 is defined as well as HAVE_X11R5.  */
  78 #define HAVE_X11R4
  79 #endif
  80
  81 #ifdef HAVE_X_I18N
  82 #include <X11/Xlocale.h>
  83 #endif
  84 \f
  85 #define BLACK_PIX_DEFAULT(f) BlackPixel (FRAME_X_DISPLAY (f), \
  86                                          XScreenNumberOfScreen (FRAME_X_SCREEN (f)))
  87 #define WHITE_PIX_DEFAULT(f) WhitePixel (FRAME_X_DISPLAY (f), \
  88                                          XScreenNumberOfScreen (FRAME_X_SCREEN (f)))
  89
  90 #define FONT_WIDTH(f)   ((f)->max_bounds.width)
  91 #define FONT_HEIGHT(f)  ((f)->ascent + (f)->descent)
  92 #define FONT_BASE(f)    ((f)->ascent)
  93
  94 /* The mask of events that text windows always want to receive.  This
  95    includes mouse movement events, since handling the mouse-font text property
  96    means that we must track mouse motion all the time.  */
  97
  98 #define STANDARD_EVENT_SET      \
  99   (KeyPressMask                 \
 100    | ExposureMask               \
 101    | ButtonPressMask            \
 102    | ButtonReleaseMask          \
 103    | PointerMotionMask          \
 104    | StructureNotifyMask        \
 105    | FocusChangeMask            \
 106    | LeaveWindowMask            \
 107    | EnterWindowMask            \
 108    | VisibilityChangeMask)
 109
 110 enum text_cursor_kinds
 111 {
 112   NO_CURSOR = -1,
 113   FILLED_BOX_CURSOR,
 114   HOLLOW_BOX_CURSOR,
 115   BAR_CURSOR,
 116   HBAR_CURSOR
 117 };
 118
 119 /* Structure recording X pixmap and reference count.
 120    If REFCOUNT is 0 then this record is free to be reused.  */
 121
 122 struct x_bitmap_record
 123 {
 124   Pixmap pixmap;
 125   char *file;
 126   int refcount;
 127   /* Record some info about this pixmap.  */
 128   int height, width, depth;
 129 };
 130 \f
 131 /* For each X display, we have a structure that records
 132    information about it.  */
 133
 134 struct x_display_info
 135 {
 136   /* Chain of all x_display_info structures.  */
 137   struct x_display_info *next;
 138
 139   /* Connection number (normally a file descriptor number).  */
 140   int connection;
 141
 142   /* This says how to access this display in Xlib.  */
 143   Display *display;
 144
 145   /* This is a cons cell of the form (NAME . FONT-LIST-CACHE).
 146      The same cons cell also appears in x_display_name_list.  */
 147   Lisp_Object name_list_element;
 148
 149   /* Number of frames that are on this display.  */
 150   int reference_count;
 151
 152   /* The Screen this connection is connected to.  */
 153   Screen *screen;
 154
 155   /* Dots per inch of the screen.  */
 156   double resx, resy;
 157
 158   /* The Visual being used for this display.  */
 159   Visual *visual;
 160
 161   /* The colormap being used.  */
 162   Colormap cmap;
 163
 164   /* Number of panes on this screen.  */
 165   int n_planes;
 166
 167   /* Dimensions of this screen.  */
 168   int height, width;
 169
 170   /* Mask of things that cause the mouse to be grabbed.  */
 171   int grabbed;
 172
 173   /* Emacs bitmap-id of the default icon bitmap for this frame.
 174      Or -1 if none has been allocated yet.  */
 175   int icon_bitmap_id;
 176
 177   /* The root window of this screen.  */
 178   Window root_window;
 179
 180   /* The cursor to use for vertical scroll bars.  */
 181   Cursor vertical_scroll_bar_cursor;
 182
 183   /* X Resource data base */
 184   XrmDatabase xrdb;
 185
 186   /* A table of all the fonts we have already loaded.  */
 187   struct font_info *font_table;
 188
 189   /* The current capacity of x_font_table.  */
 190   int font_table_size;
 191
 192   /* Minimum width over all characters in all fonts in font_table.  */
 193   int smallest_char_width;
 194
 195   /* Minimum font height over all fonts in font_table.  */
 196   int smallest_font_height;
 197
 198   /* Reusable Graphics Context for drawing a cursor in a non-default face. */
 199   GC scratch_cursor_gc;
 200
 201   /* These variables describe the range of text currently shown in its
 202      mouse-face, together with the window they apply to.  As long as
 203      the mouse stays within this range, we need not redraw anything on
 204      its account.  Rows and columns are glyph matrix positions in
 205      MOUSE_FACE_WINDOW.  */
 206   int mouse_face_beg_row, mouse_face_beg_col;
 207   int mouse_face_beg_x, mouse_face_beg_y;
 208   int mouse_face_end_row, mouse_face_end_col;
 209   int mouse_face_end_x, mouse_face_end_y;
 210   int mouse_face_past_end;
 211   Lisp_Object mouse_face_window;
 212   int mouse_face_face_id;
 213   Lisp_Object mouse_face_overlay;
 214
 215   /* 1 if a mouse motion event came and we didn't handle it right away because
 216      gc was in progress.  */
 217   int mouse_face_deferred_gc;
 218
 219   /* FRAME and X, Y position of mouse when last checked for
 220      highlighting.  X and Y can be negative or out of range for the frame.  */
 221   struct frame *mouse_face_mouse_frame;
 222   int mouse_face_mouse_x, mouse_face_mouse_y;
 223
 224   /* Nonzero means defer mouse-motion highlighting.  */
 225   int mouse_face_defer;
 226
 227   /* Nonzero means that the mouse highlight should not be shown.  */
 228   int mouse_face_hidden;
 229
 230   int mouse_face_image_state;
 231
 232   char *x_id_name;
 233
 234   /* The number of fonts actually stored in x_font_table.
 235      font_table[n] is used and valid iff 0 <= n < n_fonts.  0 <=
 236      n_fonts <= font_table_size and font_table[i].name != 0.  */
 237   int n_fonts;
 238
 239   /* Pointer to bitmap records.  */
 240   struct x_bitmap_record *bitmaps;
 241
 242   /* Allocated size of bitmaps field.  */
 243   int bitmaps_size;
 244
 245   /* Last used bitmap index.  */
 246   int bitmaps_last;
 247
 248   /* Which modifier keys are on which modifier bits?
 249
 250      With each keystroke, X returns eight bits indicating which modifier
 251      keys were held down when the key was pressed.  The interpretation
 252      of the top five modifier bits depends on what keys are attached
 253      to them.  If the Meta_L and Meta_R keysyms are on mod5, then mod5
 254      is the meta bit.
 255
 256      meta_mod_mask is a mask containing the bits used for the meta key.
 257      It may have more than one bit set, if more than one modifier bit
 258      has meta keys on it.  Basically, if EVENT is a KeyPress event,
 259      the meta key is pressed if (EVENT.state & meta_mod_mask) != 0.
 260
 261      shift_lock_mask is LockMask if the XK_Shift_Lock keysym is on the
 262      lock modifier bit, or zero otherwise.  Non-alphabetic keys should
 263      only be affected by the lock modifier bit if XK_Shift_Lock is in
 264      use; XK_Caps_Lock should only affect alphabetic keys.  With this
 265      arrangement, the lock modifier should shift the character if
 266      (EVENT.state & shift_lock_mask) != 0.  */
 267   int meta_mod_mask, shift_lock_mask;
 268
 269   /* These are like meta_mod_mask, but for different modifiers.  */
 270   int alt_mod_mask, super_mod_mask, hyper_mod_mask;
 271
 272   /* Communication with window managers.  */
 273   Atom Xatom_wm_protocols;
 274
 275   /* Kinds of protocol things we may receive.  */
 276   Atom Xatom_wm_take_focus;
 277   Atom Xatom_wm_save_yourself;
 278   Atom Xatom_wm_delete_window;
 279
 280   /* Atom for indicating window state to the window manager.  */
 281   Atom Xatom_wm_change_state;
 282
 283   /* Other WM communication */
 284   Atom Xatom_wm_configure_denied; /* When our config request is denied */
 285   Atom Xatom_wm_window_moved;     /* When the WM moves us.  */
 286
 287   /* EditRes protocol */
 288   Atom Xatom_editres;
 289
 290   /* More atoms, which are selection types.  */
 291   Atom Xatom_CLIPBOARD, Xatom_TIMESTAMP, Xatom_TEXT, Xatom_DELETE,
 292   Xatom_COMPOUND_TEXT,
 293   Xatom_MULTIPLE, Xatom_INCR, Xatom_EMACS_TMP, Xatom_TARGETS, Xatom_NULL,
 294   Xatom_ATOM_PAIR;
 295
 296   /* More atoms for font properties.  The last three are private
 297      properties, see the comments in src/fontset.h.  */
 298   Atom Xatom_PIXEL_SIZE,
 299   Xatom_MULE_BASELINE_OFFSET, Xatom_MULE_RELATIVE_COMPOSE,
 300   Xatom_MULE_DEFAULT_ASCENT;
 301
 302   /* More atoms for Ghostscript support.  */
 303   Atom Xatom_DONE, Xatom_PAGE;
 304
 305   /* Atom used in toolkit scroll bar client messages.  */
 306   Atom Xatom_Scrollbar;
 307
 308 #ifdef MULTI_KBOARD
 309   struct kboard *kboard;
 310 #endif
 311   int cut_buffers_initialized; /* Whether we're sure they all exist */
 312
 313   /* The frame (if any) which has the X window that has keyboard focus.
 314      Zero if none.  This is examined by Ffocus_frame in xfns.c.  Note
 315      that a mere EnterNotify event can set this; if you need to know the
 316      last frame specified in a FocusIn or FocusOut event, use
 317      x_focus_event_frame.  */
 318   struct frame *x_focus_frame;
 319
 320   /* The last frame mentioned in a FocusIn or FocusOut event.  This is
 321      separate from x_focus_frame, because whether or not LeaveNotify
 322      events cause us to lose focus depends on whether or not we have
 323      received a FocusIn event for it.  */
 324   struct frame *x_focus_event_frame;
 325
 326   /* The frame which currently has the visual highlight, and should get
 327      keyboard input (other sorts of input have the frame encoded in the
 328      event).  It points to the X focus frame's selected window's
 329      frame.  It differs from x_focus_frame when we're using a global
 330      minibuffer.  */
 331   struct frame *x_highlight_frame;
 332
 333   /* The null pixel used for filling a character background with
 334      background color of a gc.  */
 335   Pixmap null_pixel;
 336
 337   /* The gray pixmap.  */
 338   Pixmap gray;
 339
 340   /* Cache of images.  */
 341   struct image_cache *image_cache;
 342
 343 #ifdef HAVE_X_I18N
 344   /* XIM (X Input method).  */
 345   XIM xim;
 346   XIMStyles *xim_styles;
 347 #endif
 348
 349   /* If non-null, a cache of the colors in the color map.  Don't
 350      use this directly, call x_color_cells instead.  */
 351   XColor *color_cells;
 352   int ncolor_cells;
 353 };
 354
 355 /* This checks to make sure we have a display.  */
 356 extern void check_x P_ ((void));
 357
 358 extern struct frame *x_window_to_frame P_ ((struct x_display_info *, int));
 359
 360 #ifdef USE_X_TOOLKIT
 361 extern struct frame *x_any_window_to_frame P_ ((struct x_display_info *, int));
 362 extern struct frame *x_non_menubar_window_to_frame P_ ((struct x_display_info *, int));
 363 extern struct frame *x_top_window_to_frame P_ ((struct x_display_info *, int));
 364 #endif
 365
 366 /* This is a chain of structures for all the X displays currently in use.  */
 367 extern struct x_display_info *x_display_list;
 368
 369 /* This is a list of cons cells, each of the form (NAME . FONT-LIST-CACHE),
 370    one for each element of x_display_list and in the same order.
 371    NAME is the name of the frame.
 372    FONT-LIST-CACHE records previous values returned by x-list-fonts.  */
 373 extern Lisp_Object x_display_name_list;
 374
 375 /* Regexp matching a font name whose width is the same as `PIXEL_SIZE'.  */
 376 extern Lisp_Object Vx_pixel_size_width_font_regexp;
 377
 378 /* A flag to control how to display unibyte 8-bit character.  */
 379 extern int unibyte_display_via_language_environment;
 380
 381 extern struct x_display_info *x_display_info_for_display P_ ((Display *));
 382 extern struct x_display_info *x_display_info_for_name P_ ((Lisp_Object));
 383
 384 extern struct x_display_info *x_term_init P_ ((Lisp_Object, char *, char *));
 385
 386 extern Lisp_Object x_list_fonts P_ ((struct frame *, Lisp_Object, int, int));
 387 extern void select_visual P_ ((struct x_display_info *));
 388 extern struct font_info *x_get_font_info P_ ((struct frame *f, int));
 389 extern struct font_info *x_load_font P_ ((struct frame *, char *, int));
 390 extern struct font_info *x_query_font P_ ((struct frame *, char *));
 391 extern void x_find_ccl_program P_ ((struct font_info *));
 392 \f
 393 /* Each X frame object points to its own struct x_output object
 394    in the output_data.x field.  The x_output structure contains
 395    the information that is specific to X windows.  */
 396
 397 struct x_output
 398 {
 399   /* Position of the X window (x and y offsets in root window).  */
 400   int left_pos;
 401   int top_pos;
 402
 403   /* Border width of the X window as known by the X window system.  */
 404   int border_width;
 405
 406   /* Size of the X window in pixels.  */
 407   int pixel_height, pixel_width;
 408
 409   /* Height of menu bar widget, in pixels.
 410      Zero if not using the X toolkit.
 411      When using the toolkit, this value is not meaningful
 412      if the menubar is turned off.  */
 413   int menubar_height;
 414
 415   /* Height of a line, in pixels.  */
 416   int line_height;
 417
 418   /* The tiled border used when the mouse is out of the frame.  */
 419   Pixmap border_tile;
 420
 421   /* Here are the Graphics Contexts for the default font.  */
 422   GC normal_gc;                         /* Normal video */
 423   GC reverse_gc;                        /* Reverse video */
 424   GC cursor_gc;                         /* cursor drawing */
 425
 426   /* Width of the internal border.  This is a line of background color
 427      just inside the window's border.  When the frame is selected,
 428      a highlighting is displayed inside the internal border.  */
 429   int internal_border_width;
 430
 431   /* The X window used for this frame.
 432      May be zero while the frame object is being created
 433      and the X window has not yet been created.  */
 434   Window window_desc;
 435
 436   /* The X window used for the bitmap icon;
 437      or 0 if we don't have a bitmap icon.  */
 438   Window icon_desc;
 439
 440   /* The X window that is the parent of this X window.
 441      Usually this is a window that was made by the window manager,
 442      but it can be the root window, and it can be explicitly specified
 443      (see the explicit_parent field, below).  */
 444   Window parent_desc;
 445
 446 #ifdef USE_X_TOOLKIT
 447   /* The widget of this screen.  This is the window of a "shell" widget.  */
 448   Widget widget;
 449   /* The XmPanedWindows...  */
 450   Widget column_widget;
 451   /* The widget of the edit portion of this screen; the window in
 452      "window_desc" is inside of this.  */
 453   Widget edit_widget;
 454
 455   Widget menubar_widget;
 456 #endif
 457
 458   /* If >=0, a bitmap index.  The indicated bitmap is used for the
 459      icon. */
 460   int icon_bitmap;
 461
 462   /* Default ASCII font of this frame.  */
 463   XFontStruct *font;
 464
 465   /* The baseline offset of the default ASCII font.  */
 466   int baseline_offset;
 467
 468   /* If a fontset is specified for this frame instead of font, this
 469      value contains an ID of the fontset, else -1.  */
 470   int fontset;
 471
 472   /* Pixel values used for various purposes.
 473      border_pixel may be -1 meaning use a gray tile.  */
 474   unsigned long background_pixel;
 475   unsigned long foreground_pixel;
 476   unsigned long cursor_pixel;
 477   unsigned long border_pixel;
 478   unsigned long mouse_pixel;
 479   unsigned long cursor_foreground_pixel;
 480
 481   /* Foreground color for scroll bars.  A value of -1 means use the
 482      default (black for non-toolkit scroll bars).  */
 483   unsigned long scroll_bar_foreground_pixel;
 484
 485   /* Background color for scroll bars.  A value of -1 means use the
 486      default (background color of the frame for non-toolkit scroll
 487      bars).  */
 488   unsigned long scroll_bar_background_pixel;
 489
 490   /* Top and bottom shadow colors for 3d toolkit scrollbars.  -1 means
 491      let the scroll compute them itself.  */
 492   unsigned long scroll_bar_top_shadow_pixel;
 493   unsigned long scroll_bar_bottom_shadow_pixel;
 494
 495   /* Descriptor for the cursor in use for this window.  */
 496   Cursor text_cursor;
 497   Cursor nontext_cursor;
 498   Cursor modeline_cursor;
 499   Cursor cross_cursor;
 500   Cursor hourglass_cursor;
 501   Cursor horizontal_drag_cursor;
 502
 503   /* Window whose cursor is hourglass_cursor.  This window is temporarily
 504      mapped to display an hourglass cursor.  */
 505   Window hourglass_window;
 506
 507   /* Non-zero means hourglass cursor is currently displayed.  */
 508   unsigned hourglass_p : 1;
 509
 510   /* Flag to set when the X window needs to be completely repainted.  */
 511   int needs_exposure;
 512
 513   /* What kind of text cursor is drawn in this window right now?
 514      (If there is no cursor (phys_cursor_x < 0), then this means nothing.)  */
 515   enum text_cursor_kinds current_cursor;
 516
 517   /* What kind of text cursor should we draw in the future?
 518      This should always be filled_box_cursor or bar_cursor.  */
 519   enum text_cursor_kinds desired_cursor;
 520
 521   /* Width of bar cursor (if we are using that).  */
 522   int cursor_width;
 523
 524   /* These are the current window manager hints.  It seems that
 525      XSetWMHints, when presented with an unset bit in the `flags'
 526      member of the hints structure, does not leave the corresponding
 527      attribute unchanged; rather, it resets that attribute to its
 528      default value.  For example, unless you set the `icon_pixmap'
 529      field and the `IconPixmapHint' bit, XSetWMHints will forget what
 530      your icon pixmap was.  This is rather troublesome, since some of
 531      the members (for example, `input' and `icon_pixmap') want to stay
 532      the same throughout the execution of Emacs.  So, we keep this
 533      structure around, just leaving values in it and adding new bits
 534      to the mask as we go.  */
 535   XWMHints wm_hints;
 536
 537   /* The size of the extra width currently allotted for vertical
 538      scroll bars, in pixels.  */
 539   int vertical_scroll_bar_extra;
 540
 541   /* The extra width currently allotted for the areas in which
 542      truncation marks, continuation marks, and overlay arrows are
 543      displayed.  */
 544   int left_fringe_width, right_fringe_width;
 545   int fringe_cols, fringes_extra;
 546
 547   /* This is the gravity value for the specified window position.  */
 548   int win_gravity;
 549
 550   /* The geometry flags for this window.  */
 551   int size_hint_flags;
 552
 553   /* This is the Emacs structure for the X display this frame is on.  */
 554   struct x_display_info *display_info;
 555
 556   /* This is a button event that wants to activate the menubar.
 557      We save it here until the command loop gets to think about it.  */
 558   XEvent *saved_menu_event;
 559
 560   /* This is the widget id used for this frame's menubar in lwlib.  */
 561 #ifdef USE_X_TOOLKIT
 562   int id;
 563 #endif
 564
 565   /* Nonzero means our parent is another application's window
 566      and was explicitly specified.  */
 567   char explicit_parent;
 568
 569   /* Nonzero means tried already to make this frame visible.  */
 570   char asked_for_visible;
 571
 572   /* Nonzero if this frame was ever previously visible.  */
 573   char has_been_visible;
 574
 575 #ifdef HAVE_X_I18N
 576   /* Input context (currently, this means Compose key handler setup).  */
 577   XIC xic;
 578   XIMStyle xic_style;
 579   XFontSet xic_xfs;
 580 #endif
 581
 582   /* Relief GCs, colors etc.  */
 583   struct relief
 584   {
 585     GC gc;
 586     unsigned long pixel;
 587     int allocated_p;
 588   }
 589   black_relief, white_relief;
 590
 591   /* The background for which the above relief GCs were set up.
 592      They are changed only when a different background is involved.  */
 593   unsigned long relief_background;
 594
 595   /* Xt waits for a ConfigureNotify event from the window manager in
 596      EmacsFrameSetCharSize when the shell widget is resized.  For some
 597      window managers like fvwm2 2.2.5 and KDE 2.1 this event doesn't
 598      arrive for an unknown reason and Emacs hangs in Xt.  If this is
 599      zero, tell Xt not to wait.  */
 600   int wait_for_wm;
 601
 602   /* See enum below */
 603   int want_fullscreen;
 604
 605   /* This many pixels are the difference between the outer window (i.e. the
 606      left of the window manager decoration) and FRAME_X_WINDOW. */
 607   int x_pixels_diff;
 608
 609   /* This many pixels are the difference between the outer window (i.e. the
 610      top of the window manager titlebar) and FRAME_X_WINDOW. */
 611   int y_pixels_diff;
 612
 613   /* As x_pixels_diff, but to FRAME_OUTER_WINDOW.  For some reason the
 614      two might differ by a pixel, depending on WM */
 615   int x_pixels_outer_diff;
 616
 617   /* As y_pixels_diff, but to FRAME_OUTER_WINDOW.  In the toolkit version,
 618      these may differ because this does not take into account possible
 619      menubar.  y_pixels_diff is with menubar height included */
 620   int y_pixels_outer_diff;
 621 };
 622
 623 enum
 624 {
 625   /* Values used as a bit mask, BOTH == WIDTH | HEIGHT.  */
 626   FULLSCREEN_NONE       = 0,
 627   FULLSCREEN_WIDTH      = 1,
 628   FULLSCREEN_HEIGHT     = 2,
 629   FULLSCREEN_BOTH       = 3,
 630   FULLSCREEN_WAIT       = 4,
 631   FULLSCREEN_MOVE_WAIT  = 8,
 632 };
 633
 634 /* Return the X window used for displaying data in frame F.  */
 635 #define FRAME_X_WINDOW(f) ((f)->output_data.x->window_desc)
 636
 637 /* Return the outermost X window associated with the frame F.  */
 638 #ifdef USE_X_TOOLKIT
 639 #define FRAME_OUTER_WINDOW(f) ((f)->output_data.x->widget ?             \
 640                                XtWindow ((f)->output_data.x->widget) :  \
 641                                FRAME_X_WINDOW (f))
 642 #else
 643 #define FRAME_OUTER_WINDOW(f) (FRAME_X_WINDOW (f))
 644 #endif
 645
 646 #define FRAME_FONT(f) ((f)->output_data.x->font)
 647 #define FRAME_FONTSET(f) ((f)->output_data.x->fontset)
 648 #define FRAME_INTERNAL_BORDER_WIDTH(f) ((f)->output_data.x->internal_border_width)
 649 #define FRAME_MENUBAR_HEIGHT(f) ((f)->output_data.x->menubar_height)
 650 #define FRAME_LINE_HEIGHT(f) ((f)->output_data.x->line_height)
 651
 652 /* Width of the default font of frame F.  Must be defined by each
 653    terminal specific header.  */
 654 #define FRAME_DEFAULT_FONT_WIDTH(F)     FONT_WIDTH (FRAME_FONT (F))
 655
 656 /* This gives the x_display_info structure for the display F is on.  */
 657 #define FRAME_X_DISPLAY_INFO(f) ((f)->output_data.x->display_info)
 658
 659 /* This is the `Display *' which frame F is on.  */
 660 #define FRAME_X_DISPLAY(f) (FRAME_X_DISPLAY_INFO (f)->display)
 661
 662 /* This is the `Screen *' which frame F is on.  */
 663 #define FRAME_X_SCREEN(f) (FRAME_X_DISPLAY_INFO (f)->screen)
 664 #define FRAME_X_SCREEN_NUMBER(f) XScreenNumberOfScreen (FRAME_X_SCREEN (f))
 665
 666 /* This is the Visual which frame F is on.  */
 667 #define FRAME_X_VISUAL(f) FRAME_X_DISPLAY_INFO (f)->visual
 668
 669 /* This is the Colormap which frame F uses.  */
 670 #define FRAME_X_COLORMAP(f) FRAME_X_DISPLAY_INFO (f)->cmap
 671
 672 /* This is the 'font_info *' which frame F has.  */
 673 #define FRAME_X_FONT_TABLE(f) (FRAME_X_DISPLAY_INFO (f)->font_table)
 674
 675 /* These two really ought to be called FRAME_PIXEL_{WIDTH,HEIGHT}.  */
 676 #define PIXEL_WIDTH(f) ((f)->output_data.x->pixel_width)
 677 #define PIXEL_HEIGHT(f) ((f)->output_data.x->pixel_height)
 678
 679 #define FRAME_DESIRED_CURSOR(f) ((f)->output_data.x->desired_cursor)
 680
 681 #define FRAME_XIC(f) ((f)->output_data.x->xic)
 682 #define FRAME_X_XIM(f) (FRAME_X_DISPLAY_INFO (f)->xim)
 683 #define FRAME_X_XIM_STYLES(f) (FRAME_X_DISPLAY_INFO (f)->xim_styles)
 684 #define FRAME_XIC_STYLE(f) ((f)->output_data.x->xic_style)
 685 #define FRAME_XIC_FONTSET(f) ((f)->output_data.x->xic_xfs)
 686
 687 /* Value is the smallest width of any character in any font on frame F.  */
 688
 689 #define FRAME_SMALLEST_CHAR_WIDTH(F) \
 690      FRAME_X_DISPLAY_INFO(F)->smallest_char_width
 691
 692 /* Value is the smallest height of any font on frame F.  */
 693
 694 #define FRAME_SMALLEST_FONT_HEIGHT(F) \
 695      FRAME_X_DISPLAY_INFO(F)->smallest_font_height
 696
 697 /* Return a pointer to the image cache of frame F.  */
 698
 699 #define FRAME_X_IMAGE_CACHE(F) FRAME_X_DISPLAY_INFO ((F))->image_cache
 700
 701 \f
 702 /* Total width of fringes reserved for drawing truncation bitmaps,
 703    continuation bitmaps and alike.  The width is in canonical char
 704    units of the frame.  This must currently be the case because window
 705    sizes aren't pixel values.  If it weren't the case, we wouldn't be
 706    able to split windows horizontally nicely.  */
 707
 708 #define FRAME_X_FRINGE_COLS(F)  ((F)->output_data.x->fringe_cols)
 709
 710 /* Total width of fringes in pixels.  */
 711
 712 #define FRAME_X_FRINGE_WIDTH(F) ((F)->output_data.x->fringes_extra)
 713
 714 /* Pixel-width of the left and right fringe.  */
 715
 716 #define FRAME_X_LEFT_FRINGE_WIDTH(F) ((F)->output_data.x->left_fringe_width)
 717 #define FRAME_X_RIGHT_FRINGE_WIDTH(F) ((F)->output_data.x->right_fringe_width)
 718
 719
 720 \f
 721 /* X-specific scroll bar stuff.  */
 722
 723 /* We represent scroll bars as lisp vectors.  This allows us to place
 724    references to them in windows without worrying about whether we'll
 725    end up with windows referring to dead scroll bars; the garbage
 726    collector will free it when its time comes.
 727
 728    We use struct scroll_bar as a template for accessing fields of the
 729    vector.  */
 730
 731 struct scroll_bar
 732 {
 733   /* These fields are shared by all vectors.  */
 734   EMACS_INT size_from_Lisp_Vector_struct;
 735   struct Lisp_Vector *next_from_Lisp_Vector_struct;
 736
 737   /* The window we're a scroll bar for.  */
 738   Lisp_Object window;
 739
 740   /* The next and previous in the chain of scroll bars in this frame.  */
 741   Lisp_Object next, prev;
 742
 743   /* The X window representing this scroll bar.  Since this is a full
 744      32-bit quantity, we store it split into two 32-bit values.  */
 745   Lisp_Object x_window_low, x_window_high;
 746
 747   /* The position and size of the scroll bar in pixels, relative to the
 748      frame.  */
 749   Lisp_Object top, left, width, height;
 750
 751   /* The starting and ending positions of the handle, relative to the
 752      handle area (i.e. zero is the top position, not
 753      SCROLL_BAR_TOP_BORDER).  If they're equal, that means the handle
 754      hasn't been drawn yet.
 755
 756      These are not actually the locations where the beginning and end
 757      are drawn; in order to keep handles from becoming invisible when
 758      editing large files, we establish a minimum height by always
 759      drawing handle bottoms VERTICAL_SCROLL_BAR_MIN_HANDLE pixels below
 760      where they would be normally; the bottom and top are in a
 761      different co-ordinate system.  */
 762   Lisp_Object start, end;
 763
 764   /* If the scroll bar handle is currently being dragged by the user,
 765      this is the number of pixels from the top of the handle to the
 766      place where the user grabbed it.  If the handle isn't currently
 767      being dragged, this is Qnil.  */
 768   Lisp_Object dragging;
 769 };
 770
 771 /* The number of elements a vector holding a struct scroll_bar needs.  */
 772 #define SCROLL_BAR_VEC_SIZE                                     \
 773   ((sizeof (struct scroll_bar)                                  \
 774     - sizeof (EMACS_INT) - sizeof (struct Lisp_Vector *))       \
 775    / sizeof (Lisp_Object))
 776
 777 /* Turning a lisp vector value into a pointer to a struct scroll_bar.  */
 778 #define XSCROLL_BAR(vec) ((struct scroll_bar *) XVECTOR (vec))
 779
 780
 781 /* Building a 32-bit C integer from two 16-bit lisp integers.  */
 782 #define SCROLL_BAR_PACK(low, high) (XINT (high) << 16 | XINT (low))
 783
 784 /* Setting two lisp integers to the low and high words of a 32-bit C int.  */
 785 #define SCROLL_BAR_UNPACK(low, high, int32) \
 786   (XSETINT ((low),   (int32)        & 0xffff), \
 787    XSETINT ((high), ((int32) >> 16) & 0xffff))
 788
 789
 790 /* Extract the X window id of the scroll bar from a struct scroll_bar.  */
 791 #define SCROLL_BAR_X_WINDOW(ptr) \
 792   ((Window) SCROLL_BAR_PACK ((ptr)->x_window_low, (ptr)->x_window_high))
 793
 794 /* Store a window id in a struct scroll_bar.  */
 795 #define SET_SCROLL_BAR_X_WINDOW(ptr, id) \
 796   (SCROLL_BAR_UNPACK ((ptr)->x_window_low, (ptr)->x_window_high, (int) id))
 797
 798 /* Extract the X widget of the scroll bar from a struct scroll_bar.
 799    XtWindowToWidget should be fast enough since Xt uses a hash table
 800    to map windows to widgets.  */
 801
 802 #define SCROLL_BAR_X_WIDGET(dpy, ptr) \
 803   XtWindowToWidget (dpy, SCROLL_BAR_X_WINDOW (ptr))
 804
 805 /* Store a widget id in a struct scroll_bar.  */
 806
 807 #define SET_SCROLL_BAR_X_WIDGET(ptr, w)         \
 808   do {                                          \
 809     Window window = XtWindow (w);               \
 810     SET_SCROLL_BAR_X_WINDOW (ptr, window);      \
 811 } while (0)
 812
 813
 814 /* Return the inside width of a vertical scroll bar, given the outside
 815    width.  */
 816 #define VERTICAL_SCROLL_BAR_INSIDE_WIDTH(f, width) \
 817   ((width) \
 818    - VERTICAL_SCROLL_BAR_LEFT_BORDER \
 819    - VERTICAL_SCROLL_BAR_RIGHT_BORDER \
 820    - VERTICAL_SCROLL_BAR_WIDTH_TRIM * 2)
 821
 822 /* Return the length of the rectangle within which the top of the
 823    handle must stay.  This isn't equivalent to the inside height,
 824    because the scroll bar handle has a minimum height.
 825
 826    This is the real range of motion for the scroll bar, so when we're
 827    scaling buffer positions to scroll bar positions, we use this, not
 828    VERTICAL_SCROLL_BAR_INSIDE_HEIGHT.  */
 829 #define VERTICAL_SCROLL_BAR_TOP_RANGE(f, height) \
 830   (VERTICAL_SCROLL_BAR_INSIDE_HEIGHT (f, height) - VERTICAL_SCROLL_BAR_MIN_HANDLE)
 831
 832 /* Return the inside height of vertical scroll bar, given the outside
 833    height.  See VERTICAL_SCROLL_BAR_TOP_RANGE too.  */
 834 #define VERTICAL_SCROLL_BAR_INSIDE_HEIGHT(f, height) \
 835   ((height) - VERTICAL_SCROLL_BAR_TOP_BORDER - VERTICAL_SCROLL_BAR_BOTTOM_BORDER)
 836
 837
 838 /* Border widths for scroll bars.
 839
 840    Scroll bar windows don't have any X borders; their border width is
 841    set to zero, and we redraw borders ourselves.  This makes the code
 842    a bit cleaner, since we don't have to convert between outside width
 843    (used when relating to the rest of the screen) and inside width
 844    (used when sizing and drawing the scroll bar window itself).
 845
 846    The handle moves up and down/back and forth in a rectangle inset
 847    from the edges of the scroll bar.  These are widths by which we
 848    inset the handle boundaries from the scroll bar edges.  */
 849 #define VERTICAL_SCROLL_BAR_LEFT_BORDER (2)
 850 #define VERTICAL_SCROLL_BAR_RIGHT_BORDER (2)
 851 #define VERTICAL_SCROLL_BAR_TOP_BORDER (2)
 852 #define VERTICAL_SCROLL_BAR_BOTTOM_BORDER (2)
 853
 854 /* Minimum lengths for scroll bar handles, in pixels.  */
 855 #define VERTICAL_SCROLL_BAR_MIN_HANDLE (5)
 856
 857 /* Trimming off a few pixels from each side prevents
 858    text from glomming up against the scroll bar */
 859 #define VERTICAL_SCROLL_BAR_WIDTH_TRIM (0)
 860
 861 \f
 862 /* Manipulating pixel sizes and character sizes.
 863    Knowledge of which factors affect the overall size of the window should
 864    be hidden in these macros, if that's possible.
 865
 866    Return the upper/left pixel position of the character cell on frame F
 867    at ROW/COL.  */
 868 #define CHAR_TO_PIXEL_ROW(f, row) \
 869   ((f)->output_data.x->internal_border_width \
 870    + (row) * (f)->output_data.x->line_height)
 871 #define CHAR_TO_PIXEL_COL(f, col) \
 872   ((f)->output_data.x->internal_border_width \
 873    + (col) * FONT_WIDTH ((f)->output_data.x->font))
 874
 875 /* Return the pixel width/height of frame F if it has
 876    WIDTH columns/HEIGHT rows.  */
 877 #define CHAR_TO_PIXEL_WIDTH(f, width) \
 878   (CHAR_TO_PIXEL_COL (f, width) \
 879    + (f)->output_data.x->vertical_scroll_bar_extra \
 880    + (f)->output_data.x->fringes_extra \
 881    + (f)->output_data.x->internal_border_width)
 882 #define CHAR_TO_PIXEL_HEIGHT(f, height) \
 883   (CHAR_TO_PIXEL_ROW (f, height) \
 884    + (f)->output_data.x->internal_border_width)
 885
 886
 887 /* Return the row/column (zero-based) of the character cell containing
 888    the pixel on FRAME at ROW/COL.  */
 889 #define PIXEL_TO_CHAR_ROW(f, row) \
 890   (((row) - (f)->output_data.x->internal_border_width) \
 891    / (f)->output_data.x->line_height)
 892 #define PIXEL_TO_CHAR_COL(f, col) \
 893   (((col) - (f)->output_data.x->internal_border_width) \
 894    / FONT_WIDTH ((f)->output_data.x->font))
 895
 896 /* How many columns/rows of text can we fit in WIDTH/HEIGHT pixels on
 897    frame F?  */
 898 #define PIXEL_TO_CHAR_WIDTH(f, width) \
 899   (PIXEL_TO_CHAR_COL (f, ((width) \
 900                           - (f)->output_data.x->internal_border_width \
 901                           - (f)->output_data.x->fringes_extra \
 902                           - (f)->output_data.x->vertical_scroll_bar_extra)))
 903 #define PIXEL_TO_CHAR_HEIGHT(f, height) \
 904   (PIXEL_TO_CHAR_ROW (f, ((height) \
 905                           - (f)->output_data.x->internal_border_width)))
 906
 907 \f
 908 /* If a struct input_event has a kind which is selection_request_event
 909    or selection_clear_event, then its contents are really described
 910    by this structure.  */
 911
 912 /* For an event of kind selection_request_event,
 913    this structure really describes the contents.
 914    **Don't make this struct longer!**
 915    If it overlaps the frame_or_window field of struct input_event,
 916    that will cause GC to crash.  */
 917 struct selection_input_event
 918 {
 919   int kind;
 920   Display *display;
 921   /* We spell it with an "o" here because X does.  */
 922   Window requestor;
 923   Atom selection, target, property;
 924   Time time;
 925 };
 926
 927 #define SELECTION_EVENT_DISPLAY(eventp) \
 928   (((struct selection_input_event *) (eventp))->display)
 929 /* We spell it with an "o" here because X does.  */
 930 #define SELECTION_EVENT_REQUESTOR(eventp)       \
 931   (((struct selection_input_event *) (eventp))->requestor)
 932 #define SELECTION_EVENT_SELECTION(eventp)       \
 933   (((struct selection_input_event *) (eventp))->selection)
 934 #define SELECTION_EVENT_TARGET(eventp)  \
 935   (((struct selection_input_event *) (eventp))->target)
 936 #define SELECTION_EVENT_PROPERTY(eventp)        \
 937   (((struct selection_input_event *) (eventp))->property)
 938 #define SELECTION_EVENT_TIME(eventp)    \
 939   (((struct selection_input_event *) (eventp))->time)
 940
 941 \f
 942 struct window;
 943 struct glyph_matrix;
 944 struct frame;
 945 struct input_event;
 946 struct face;
 947 struct image;
 948
 949 /* From xselect.c.  */
 950
 951 void x_handle_selection_notify P_ ((XSelectionEvent *));
 952 void x_handle_property_notify P_ ((XPropertyEvent *));
 953
 954 /* From xfns.c.  */
 955
 956 Lisp_Object display_x_get_resource P_ ((struct x_display_info *,
 957                                         Lisp_Object, Lisp_Object,
 958                                         Lisp_Object, Lisp_Object));
 959 struct frame *check_x_frame P_ ((Lisp_Object));
 960 EXFUN (Fx_display_color_p, 1);
 961 EXFUN (Fx_display_grayscale_p, 1);
 962 int image_ascent P_ ((struct image *, struct face *));
 963 extern void x_free_gcs P_ ((struct frame *));
 964
 965 /* From xrdb.c.  */
 966
 967 char *x_get_string_resource P_ ((XrmDatabase, char *, char *));
 968 char *x_get_customization_string P_ ((XrmDatabase, char *, char *));
 969 XrmDatabase x_load_resources P_ ((Display *, char *, char *, char *));
 970 int x_get_resource P_ ((XrmDatabase, char *, char *,
 971                         XrmRepresentation, XrmValue *));
 972 void x_delete_display P_ ((struct x_display_info *));
 973 void x_make_frame_visible P_ ((struct frame *));
 974 void x_iconify_frame P_ ((struct frame *));
 975 void x_wm_set_size_hint P_ ((struct frame *, long, int));
 976 void x_set_offset P_ ((struct frame *, int, int, int));
 977 void x_wm_set_icon_position P_ ((struct frame *, int, int));
 978 int x_catch_errors P_ ((Display *));
 979 int x_had_errors_p P_ ((Display *));
 980 void x_uncatch_errors P_ ((Display *, int));
 981 void x_check_errors P_ ((Display *, char *));
 982 int x_text_icon P_ ((struct frame *, char *));
 983 int x_bitmap_icon P_ ((struct frame *, Lisp_Object));
 984 void x_set_window_size P_ ((struct frame *, int, int, int));
 985 void x_wm_set_window_state P_ ((struct frame *, int));
 986 int x_alloc_nearest_color P_ ((struct frame *, Colormap, XColor *));
 987
 988 extern void pixel_to_glyph_coords P_ ((struct frame *, int, int,
 989                                        int *, int *, XRectangle *, int));
 990
 991 /* Defined in xterm.c */
 992
 993 extern void cancel_mouse_face P_ ((struct frame *));
 994 extern void x_scroll_bar_clear P_ ((struct frame *));
 995 extern void x_start_queuing_selection_requests P_ ((Display *));
 996 extern void x_stop_queuing_selection_requests P_ ((Display *));
 997 extern void x_update_cursor P_ ((struct frame *, int));
 998 extern int x_text_icon P_ ((struct frame *, char *));
 999 extern int x_bitmap_icon P_ ((struct frame *, Lisp_Object));
1000 extern int x_catch_errors P_ ((Display *));
1001 extern void x_check_errors P_ ((Display *, char *));
1002 extern int x_had_errors_p P_ ((Display *));
1003 extern void x_uncatch_errors P_ ((Display *, int));
1004 extern Lisp_Object x_new_font P_ ((struct frame *, char *));
1005 extern Lisp_Object x_new_fontset P_ ((struct frame *, char *));
1006 extern void x_compute_fringe_widths P_ ((struct frame *, int));
1007 extern void x_set_offset P_ ((struct frame *, int, int, int));
1008 extern void x_set_window_size P_ ((struct frame *, int, int, int));
1009 extern void x_set_mouse_position P_ ((struct frame *, int, int));
1010 extern void x_set_mouse_pixel_position P_ ((struct frame *, int, int));
1011 extern void x_raise_frame P_ ((struct frame *));
1012 extern void x_lower_frame P_ ((struct frame *));
1013 extern void x_make_frame_visible P_ ((struct frame *));
1014 extern void x_make_frame_invisible P_ ((struct frame *));
1015 extern void x_iconify_frame P_ ((struct frame *));
1016 extern void x_free_frame_resources P_ ((struct frame *));
1017 extern void x_destroy_window P_ ((struct frame *));
1018 extern void x_wm_set_size_hint P_ ((struct frame *, long, int));
1019 extern void x_wm_set_window_state P_ ((struct frame *, int));
1020 extern void x_wm_set_icon_pixmap P_ ((struct frame *, int));
1021 extern void x_wm_set_icon_position P_ ((struct frame *, int, int));
1022 extern void x_delete_display P_ ((struct x_display_info *));
1023 extern void x_initialize P_ ((void));
1024 extern void x_display_cursor P_ ((struct window *, int, int, int, int, int));
1025 extern unsigned long x_copy_color P_ ((struct frame *, unsigned long));
1026 #ifdef USE_X_TOOLKIT
1027 extern XtAppContext Xt_app_con;
1028 #endif
1029 extern void x_query_colors P_ ((struct frame *f, XColor *, int));
1030 extern void x_query_color P_ ((struct frame *f, XColor *));
1031 extern void x_clear_area P_ ((Display *, Window, int, int, int, int, int));
1032
1033 extern void x_fullscreen_adjust P_ ((struct frame *f, int *, int *,
1034                                      int *, int *));
1035
1036
1037 /* Defined in xselect.c */
1038
1039 extern void x_handle_property_notify P_ ((XPropertyEvent *));
1040 extern void x_handle_selection_notify P_ ((XSelectionEvent *));
1041 extern void x_handle_selection_request P_ ((struct input_event *));
1042 extern void x_handle_selection_clear P_ ((struct input_event *));
1043 extern void x_clear_frame_selections P_ ((struct frame *));
1044
1045 /* Defined in xfns.c */
1046
1047 extern int have_menus_p P_ ((void));
1048 extern int x_bitmap_height P_ ((struct frame *, int));
1049 extern int x_bitmap_width P_ ((struct frame *, int));
1050 extern int x_bitmap_pixmap P_ ((struct frame *, int));
1051 extern void x_reference_bitmap P_ ((struct frame *, int));
1052 extern int x_create_bitmap_from_data P_ ((struct frame *, char *,
1053                                           unsigned int, unsigned int));
1054 extern int x_create_bitmap_from_file P_ ((struct frame *, Lisp_Object));
1055 extern void x_destroy_bitmap P_ ((struct frame *, int));
1056 extern void x_set_frame_parameters P_ ((struct frame *, Lisp_Object));
1057 extern void x_real_positions P_ ((struct frame *, int *, int *));
1058 extern void x_report_frame_params P_ ((struct frame *, Lisp_Object *));
1059 extern int defined_color P_ ((struct frame *, char *, XColor *, int));
1060 extern void x_set_border_pixel P_ ((struct frame *, int));
1061 extern void x_set_menu_bar_lines P_ ((struct frame *, Lisp_Object, Lisp_Object));
1062 extern unsigned char * x_encode_text P_ ((Lisp_Object, Lisp_Object, int,
1063                                           int *, int *));
1064 extern void x_implicitly_set_name P_ ((struct frame *, Lisp_Object, Lisp_Object));
1065 extern void create_frame_xic P_ ((struct frame *));
1066 extern void destroy_frame_xic P_ ((struct frame *));
1067 extern void xic_set_preeditarea P_ ((struct window *, int, int));
1068 extern void xic_set_statusarea P_ ((struct frame *));
1069 extern void xic_set_xfontset P_ ((struct frame *, char *));
1070 extern int x_pixel_width P_ ((struct frame *));
1071 extern int x_pixel_height P_ ((struct frame *));
1072 extern int x_char_width P_ ((struct frame *));
1073 extern int x_char_height P_ ((struct frame *));
1074 extern int x_screen_planes P_ ((struct frame *));
1075 extern void x_sync P_ ((struct frame *));
1076 extern enum text_cursor_kinds x_specified_cursor_type P_ ((Lisp_Object, int *));
1077 extern int x_defined_color P_ ((struct frame *, char *, XColor *, int));
1078 #ifdef HAVE_X_I18N
1079 extern void free_frame_xic P_ ((struct frame *));
1080 #endif
1081 extern void x_set_tool_bar_lines P_ ((struct frame *, Lisp_Object, Lisp_Object));
1082
1083 /* Defined in xfaces.c */
1084
1085 extern int frame_update_line_height P_ ((struct frame *));
1086 extern int compute_glyph_face P_ ((struct frame *, int, int));
1087 extern int compute_glyph_face_1 P_ ((struct frame *, Lisp_Object, int));
1088 extern void x_free_dpy_colors P_ ((Display *, Screen *, Colormap,
1089                                    unsigned long *, int));
1090
1091 /* Defined in xmenu.c */
1092
1093 extern void x_activate_menubar P_ ((struct frame *));
1094 extern int popup_activated P_ ((void));
1095 extern void initialize_frame_menubar P_ ((struct frame *));
1096
1097 /* Defined in widget.c */
1098
1099 #ifdef USE_X_TOOLKIT
1100 extern void widget_store_internal_border P_ ((Widget));
1101 #endif
1102
1103 /* Defined in xsmfns.c */
1104 #ifdef HAVE_X_SM
1105 extern void x_session_initialize P_ ((void));
1106 extern int x_session_check_input P_ ((struct input_event *bufp,
1107                                       int *numchars));
1108 extern int x_session_have_connection P_ ((void));
1109 #endif