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
  37 typedef Widget xt_or_gtk_widget;
  38 #endif
  39
  40 #ifdef USE_GTK
  41 #include <gtk/gtk.h>
  42 #include <gdk/gdkx.h>
  43
  44 /* Some definitions to reduce conditionals.  */
  45 typedef GtkWidget *xt_or_gtk_widget;
  46 #define XtParent(x) (gtk_widget_get_parent (x))
  47 #undef XSync
  48 #define XSync(d, b) gdk_window_process_all_updates ()
  49
  50 #endif /* USE_GTK */
  51
  52 \f
  53 /* Bookkeeping to distinguish X versions.  */
  54
  55 /* HAVE_X11R4 is defined if we have the features of X11R4.  It should
  56    be defined when we're using X11R5, since X11R5 has the features of
  57    X11R4.  If, in the future, we find we need more of these flags
  58    (HAVE_X11R5, for example), code should always be written to test
  59    the most recent flag first:
  60
  61       #ifdef HAVE_X11R5
  62         ...
  63       #elif HAVE_X11R4
  64         ...
  65       #elif HAVE_X11
  66         ...
  67       #endif
  68
  69    If you ever find yourself writing a "#ifdef HAVE_FOO" clause that
  70    looks a lot like another one, consider moving the text into a macro
  71    whose definition is configuration-dependent, but whose usage is
  72    universal - like the stuff in systime.h.
  73
  74    It turns out that we can auto-detect whether we're being compiled
  75    with X11R3 or X11R4 by looking for the flag macros for R4 structure
  76    members that R3 doesn't have.  */
  77 #ifdef PBaseSize
  78 /* AIX 3.1's X is somewhere between X11R3 and X11R4.  It has
  79    PBaseSize, but not XWithdrawWindow, XSetWMName, XSetWMNormalHints,
  80    XSetWMIconName.
  81    AIX 3.2 is at least X11R4.  */
  82 #if (!defined AIX) || (defined AIX3_2)
  83 #define HAVE_X11R4
  84 #endif
  85 #endif
  86
  87 #ifdef HAVE_X11R5
  88 /* In case someone has X11R5 on AIX 3.1,
  89    make sure HAVE_X11R4 is defined as well as HAVE_X11R5.  */
  90 #define HAVE_X11R4
  91 #endif
  92
  93 #ifdef HAVE_X_I18N
  94 #include <X11/Xlocale.h>
  95 #endif
  96 \f
  97 #define BLACK_PIX_DEFAULT(f) BlackPixel (FRAME_X_DISPLAY (f), \
  98                                          XScreenNumberOfScreen (FRAME_X_SCREEN (f)))
  99 #define WHITE_PIX_DEFAULT(f) WhitePixel (FRAME_X_DISPLAY (f), \
 100                                          XScreenNumberOfScreen (FRAME_X_SCREEN (f)))
 101
 102 #define FONT_WIDTH(f)   ((f)->max_bounds.width)
 103 #define FONT_HEIGHT(f)  ((f)->ascent + (f)->descent)
 104 #define FONT_BASE(f)    ((f)->ascent)
 105 #define FONT_DESCENT(f) ((f)->descent)
 106
 107 /* The mask of events that text windows always want to receive.  This
 108    includes mouse movement events, since handling the mouse-font text property
 109    means that we must track mouse motion all the time.  */
 110
 111 #define STANDARD_EVENT_SET      \
 112   (KeyPressMask                 \
 113    | ExposureMask               \
 114    | ButtonPressMask            \
 115    | ButtonReleaseMask          \
 116    | PointerMotionMask          \
 117    | StructureNotifyMask        \
 118    | FocusChangeMask            \
 119    | LeaveWindowMask            \
 120    | EnterWindowMask            \
 121    | VisibilityChangeMask)
 122
 123 /* Structure recording X pixmap and reference count.
 124    If REFCOUNT is 0 then this record is free to be reused.  */
 125
 126 struct x_bitmap_record
 127 {
 128   Pixmap pixmap;
 129   char *file;
 130   int refcount;
 131   /* Record some info about this pixmap.  */
 132   int height, width, depth;
 133 };
 134 \f
 135 /* For each X display, we have a structure that records
 136    information about it.  */
 137
 138 struct x_display_info
 139 {
 140   /* Chain of all x_display_info structures.  */
 141   struct x_display_info *next;
 142
 143   /* Connection number (normally a file descriptor number).  */
 144   int connection;
 145
 146   /* This says how to access this display in Xlib.  */
 147   Display *display;
 148
 149   /* This is a cons cell of the form (NAME . FONT-LIST-CACHE).
 150      The same cons cell also appears in x_display_name_list.  */
 151   Lisp_Object name_list_element;
 152
 153   /* Number of frames that are on this display.  */
 154   int reference_count;
 155
 156   /* The Screen this connection is connected to.  */
 157   Screen *screen;
 158
 159   /* Dots per inch of the screen.  */
 160   double resx, resy;
 161
 162   /* The Visual being used for this display.  */
 163   Visual *visual;
 164
 165   /* The colormap being used.  */
 166   Colormap cmap;
 167
 168   /* Number of panes on this screen.  */
 169   int n_planes;
 170
 171   /* Dimensions of this screen.  */
 172   int height, width;
 173
 174   /* Mask of things that cause the mouse to be grabbed.  */
 175   int grabbed;
 176
 177   /* Emacs bitmap-id of the default icon bitmap for this frame.
 178      Or -1 if none has been allocated yet.  */
 179   int icon_bitmap_id;
 180
 181   /* The root window of this screen.  */
 182   Window root_window;
 183
 184   /* The cursor to use for vertical scroll bars.  */
 185   Cursor vertical_scroll_bar_cursor;
 186
 187   /* X Resource data base */
 188   XrmDatabase xrdb;
 189
 190   /* A table of all the fonts we have already loaded.  */
 191   struct font_info *font_table;
 192
 193   /* The current capacity of x_font_table.  */
 194   int font_table_size;
 195
 196   /* Minimum width over all characters in all fonts in font_table.  */
 197   int smallest_char_width;
 198
 199   /* Minimum font height over all fonts in font_table.  */
 200   int smallest_font_height;
 201
 202   /* Reusable Graphics Context for drawing a cursor in a non-default face. */
 203   GC scratch_cursor_gc;
 204
 205   /* These variables describe the range of text currently shown in its
 206      mouse-face, together with the window they apply to.  As long as
 207      the mouse stays within this range, we need not redraw anything on
 208      its account.  Rows and columns are glyph matrix positions in
 209      MOUSE_FACE_WINDOW.  */
 210   int mouse_face_beg_row, mouse_face_beg_col;
 211   int mouse_face_beg_x, mouse_face_beg_y;
 212   int mouse_face_end_row, mouse_face_end_col;
 213   int mouse_face_end_x, mouse_face_end_y;
 214   int mouse_face_past_end;
 215   Lisp_Object mouse_face_window;
 216   int mouse_face_face_id;
 217   Lisp_Object mouse_face_overlay;
 218
 219   /* 1 if a mouse motion event came and we didn't handle it right away because
 220      gc was in progress.  */
 221   int mouse_face_deferred_gc;
 222
 223   /* FRAME and X, Y position of mouse when last checked for
 224      highlighting.  X and Y can be negative or out of range for the frame.  */
 225   struct frame *mouse_face_mouse_frame;
 226   int mouse_face_mouse_x, mouse_face_mouse_y;
 227
 228   /* Nonzero means defer mouse-motion highlighting.  */
 229   int mouse_face_defer;
 230
 231   /* Nonzero means that the mouse highlight should not be shown.  */
 232   int mouse_face_hidden;
 233
 234   int mouse_face_image_state;
 235
 236   char *x_id_name;
 237
 238   /* The number of fonts actually stored in x_font_table.
 239      font_table[n] is used and valid iff 0 <= n < n_fonts.  0 <=
 240      n_fonts <= font_table_size and font_table[i].name != 0.  */
 241   int n_fonts;
 242
 243   /* Pointer to bitmap records.  */
 244   struct x_bitmap_record *bitmaps;
 245
 246   /* Allocated size of bitmaps field.  */
 247   int bitmaps_size;
 248
 249   /* Last used bitmap index.  */
 250   int bitmaps_last;
 251
 252   /* Which modifier keys are on which modifier bits?
 253
 254      With each keystroke, X returns eight bits indicating which modifier
 255      keys were held down when the key was pressed.  The interpretation
 256      of the top five modifier bits depends on what keys are attached
 257      to them.  If the Meta_L and Meta_R keysyms are on mod5, then mod5
 258      is the meta bit.
 259
 260      meta_mod_mask is a mask containing the bits used for the meta key.
 261      It may have more than one bit set, if more than one modifier bit
 262      has meta keys on it.  Basically, if EVENT is a KeyPress event,
 263      the meta key is pressed if (EVENT.state & meta_mod_mask) != 0.
 264
 265      shift_lock_mask is LockMask if the XK_Shift_Lock keysym is on the
 266      lock modifier bit, or zero otherwise.  Non-alphabetic keys should
 267      only be affected by the lock modifier bit if XK_Shift_Lock is in
 268      use; XK_Caps_Lock should only affect alphabetic keys.  With this
 269      arrangement, the lock modifier should shift the character if
 270      (EVENT.state & shift_lock_mask) != 0.  */
 271   int meta_mod_mask, shift_lock_mask;
 272
 273   /* These are like meta_mod_mask, but for different modifiers.  */
 274   int alt_mod_mask, super_mod_mask, hyper_mod_mask;
 275
 276   /* Communication with window managers.  */
 277   Atom Xatom_wm_protocols;
 278
 279   /* Kinds of protocol things we may receive.  */
 280   Atom Xatom_wm_take_focus;
 281   Atom Xatom_wm_save_yourself;
 282   Atom Xatom_wm_delete_window;
 283
 284   /* Atom for indicating window state to the window manager.  */
 285   Atom Xatom_wm_change_state;
 286
 287   /* Other WM communication */
 288   Atom Xatom_wm_configure_denied; /* When our config request is denied */
 289   Atom Xatom_wm_window_moved;     /* When the WM moves us.  */
 290
 291   /* EditRes protocol */
 292   Atom Xatom_editres;
 293
 294   /* More atoms, which are selection types.  */
 295   Atom Xatom_CLIPBOARD, Xatom_TIMESTAMP, Xatom_TEXT, Xatom_DELETE,
 296   Xatom_COMPOUND_TEXT, Xatom_UTF8_STRING,
 297   Xatom_MULTIPLE, Xatom_INCR, Xatom_EMACS_TMP, Xatom_TARGETS, Xatom_NULL,
 298   Xatom_ATOM_PAIR;
 299
 300   /* More atoms for font properties.  The last three are private
 301      properties, see the comments in src/fontset.h.  */
 302   Atom Xatom_PIXEL_SIZE,
 303   Xatom_MULE_BASELINE_OFFSET, Xatom_MULE_RELATIVE_COMPOSE,
 304   Xatom_MULE_DEFAULT_ASCENT;
 305
 306   /* More atoms for Ghostscript support.  */
 307   Atom Xatom_DONE, Xatom_PAGE;
 308
 309   /* Atom used in toolkit scroll bar client messages.  */
 310   Atom Xatom_Scrollbar;
 311
 312 #ifdef MULTI_KBOARD
 313   struct kboard *kboard;
 314 #endif
 315   int cut_buffers_initialized; /* Whether we're sure they all exist */
 316
 317   /* The frame (if any) which has the X window that has keyboard focus.
 318      Zero if none.  This is examined by Ffocus_frame in xfns.c.  Note
 319      that a mere EnterNotify event can set this; if you need to know the
 320      last frame specified in a FocusIn or FocusOut event, use
 321      x_focus_event_frame.  */
 322   struct frame *x_focus_frame;
 323
 324   /* The last frame mentioned in a FocusIn or FocusOut event.  This is
 325      separate from x_focus_frame, because whether or not LeaveNotify
 326      events cause us to lose focus depends on whether or not we have
 327      received a FocusIn event for it.  */
 328   struct frame *x_focus_event_frame;
 329
 330   /* The frame which currently has the visual highlight, and should get
 331      keyboard input (other sorts of input have the frame encoded in the
 332      event).  It points to the X focus frame's selected window's
 333      frame.  It differs from x_focus_frame when we're using a global
 334      minibuffer.  */
 335   struct frame *x_highlight_frame;
 336
 337   /* The null pixel used for filling a character background with
 338      background color of a gc.  */
 339   Pixmap null_pixel;
 340
 341   /* The gray pixmap.  */
 342   Pixmap gray;
 343
 344   /* Cache of images.  */
 345   struct image_cache *image_cache;
 346
 347 #ifdef HAVE_X_I18N
 348   /* XIM (X Input method).  */
 349   XIM xim;
 350   XIMStyles *xim_styles;
 351 #endif
 352
 353   /* If non-null, a cache of the colors in the color map.  Don't
 354      use this directly, call x_color_cells instead.  */
 355   XColor *color_cells;
 356   int ncolor_cells;
 357 };
 358
 359 /* This checks to make sure we have a display.  */
 360 extern void check_x P_ ((void));
 361
 362 extern struct frame *x_window_to_frame P_ ((struct x_display_info *, int));
 363
 364 #if defined (USE_X_TOOLKIT) || defined (USE_GTK)
 365 extern struct frame *x_any_window_to_frame P_ ((struct x_display_info *, int));
 366 extern struct frame *x_non_menubar_window_to_frame P_ ((struct x_display_info *, int));
 367 extern struct frame *x_top_window_to_frame P_ ((struct x_display_info *, int));
 368 #endif
 369
 370 /* This is a chain of structures for all the X displays currently in use.  */
 371 extern struct x_display_info *x_display_list;
 372
 373 /* This is a list of cons cells, each of the form (NAME . FONT-LIST-CACHE),
 374    one for each element of x_display_list and in the same order.
 375    NAME is the name of the frame.
 376    FONT-LIST-CACHE records previous values returned by x-list-fonts.  */
 377 extern Lisp_Object x_display_name_list;
 378
 379 /* Regexp matching a font name whose width is the same as `PIXEL_SIZE'.  */
 380 extern Lisp_Object Vx_pixel_size_width_font_regexp;
 381
 382 /* A flag to control how to display unibyte 8-bit character.  */
 383 extern int unibyte_display_via_language_environment;
 384
 385 extern struct x_display_info *x_display_info_for_display P_ ((Display *));
 386 extern struct x_display_info *x_display_info_for_name P_ ((Lisp_Object));
 387
 388 extern struct x_display_info *x_term_init P_ ((Lisp_Object, char *, char *));
 389
 390 extern Lisp_Object x_list_fonts P_ ((struct frame *, Lisp_Object, int, int));
 391 extern void select_visual P_ ((struct x_display_info *));
 392 extern struct font_info *x_get_font_info P_ ((struct frame *f, int));
 393 extern struct font_info *x_load_font P_ ((struct frame *, char *, int));
 394 extern struct font_info *x_query_font P_ ((struct frame *, char *));
 395 extern void x_find_ccl_program P_ ((struct font_info *));
 396 \f
 397 /* Each X frame object points to its own struct x_output object
 398    in the output_data.x field.  The x_output structure contains
 399    the information that is specific to X windows.  */
 400
 401 struct x_output
 402 {
 403   /* Position of the X window (x and y offsets in root window).  */
 404   int left_pos;
 405   int top_pos;
 406
 407   /* Border width of the X window as known by the X window system.  */
 408   int border_width;
 409
 410   /* Size of the X window in pixels.  */
 411   int pixel_height, pixel_width;
 412
 413   /* Height of menu bar widget, in pixels.
 414      Zero if not using the X toolkit.
 415      When using the toolkit, this value is not meaningful
 416      if the menubar is turned off.  */
 417   int menubar_height;
 418
 419   /* Height of tool bar widget, in pixels.
 420      Zero if not using an external tool bar.  */
 421   int toolbar_height;
 422
 423   /* Height of a line, in pixels.  */
 424   int line_height;
 425
 426   /* The tiled border used when the mouse is out of the frame.  */
 427   Pixmap border_tile;
 428
 429   /* Here are the Graphics Contexts for the default font.  */
 430   GC normal_gc;                         /* Normal video */
 431   GC reverse_gc;                        /* Reverse video */
 432   GC cursor_gc;                         /* cursor drawing */
 433
 434   /* Width of the internal border.  This is a line of background color
 435      just inside the window's border.  When the frame is selected,
 436      a highlighting is displayed inside the internal border.  */
 437   int internal_border_width;
 438
 439   /* The X window used for this frame.
 440      May be zero while the frame object is being created
 441      and the X window has not yet been created.  */
 442   Window window_desc;
 443
 444   /* The X window used for the bitmap icon;
 445      or 0 if we don't have a bitmap icon.  */
 446   Window icon_desc;
 447
 448   /* The X window that is the parent of this X window.
 449      Usually this is a window that was made by the window manager,
 450      but it can be the root window, and it can be explicitly specified
 451      (see the explicit_parent field, below).  */
 452   Window parent_desc;
 453
 454 #ifdef USE_X_TOOLKIT
 455   /* The widget of this screen.  This is the window of a "shell" widget.  */
 456   Widget widget;
 457   /* The XmPanedWindows...  */
 458   Widget column_widget;
 459   /* The widget of the edit portion of this screen; the window in
 460      "window_desc" is inside of this.  */
 461   Widget edit_widget;
 462
 463   Widget menubar_widget;
 464 #endif
 465
 466 #ifdef USE_GTK
 467   /* The widget of this screen.  This is the window of a top widget.  */
 468   GtkWidget *widget;
 469   /* The widget of the edit portion of this screen; the window in
 470      "window_desc" is inside of this.  */
 471   GtkWidget *edit_widget;
 472   /* The widget used for laying out widgets vertically.  */
 473   GtkWidget *vbox_widget;
 474   /* The menubar in this frame.  */
 475   GtkWidget *menubar_widget;
 476   /* The tool bar in this frame  */
 477   GtkWidget *toolbar_widget;
 478   /* The handle box that makes the tool bar detachable.  */
 479   GtkWidget *handlebox_widget;
 480
 481   /* The last size hints set.  */
 482   GdkGeometry size_hints;
 483   long hint_flags;
 484 #endif
 485
 486   /* If >=0, a bitmap index.  The indicated bitmap is used for the
 487      icon. */
 488   int icon_bitmap;
 489
 490   /* Default ASCII font of this frame.  */
 491   XFontStruct *font;
 492
 493   /* The baseline offset of the default ASCII font.  */
 494   int baseline_offset;
 495
 496   /* If a fontset is specified for this frame instead of font, this
 497      value contains an ID of the fontset, else -1.  */
 498   int fontset;
 499
 500   /* Pixel values used for various purposes.
 501      border_pixel may be -1 meaning use a gray tile.  */
 502   unsigned long background_pixel;
 503   unsigned long foreground_pixel;
 504   unsigned long cursor_pixel;
 505   unsigned long border_pixel;
 506   unsigned long mouse_pixel;
 507   unsigned long cursor_foreground_pixel;
 508
 509   /* Foreground color for scroll bars.  A value of -1 means use the
 510      default (black for non-toolkit scroll bars).  */
 511   unsigned long scroll_bar_foreground_pixel;
 512
 513   /* Background color for scroll bars.  A value of -1 means use the
 514      default (background color of the frame for non-toolkit scroll
 515      bars).  */
 516   unsigned long scroll_bar_background_pixel;
 517
 518   /* Top and bottom shadow colors for 3d toolkit scrollbars.  -1 means
 519      let the scroll compute them itself.  */
 520   unsigned long scroll_bar_top_shadow_pixel;
 521   unsigned long scroll_bar_bottom_shadow_pixel;
 522
 523   /* Descriptor for the cursor in use for this window.  */
 524   Cursor text_cursor;
 525   Cursor nontext_cursor;
 526   Cursor modeline_cursor;
 527   Cursor hand_cursor;
 528   Cursor hourglass_cursor;
 529   Cursor horizontal_drag_cursor;
 530
 531   /* Window whose cursor is hourglass_cursor.  This window is temporarily
 532      mapped to display an hourglass cursor.  */
 533   Window hourglass_window;
 534
 535   /* Non-zero means hourglass cursor is currently displayed.  */
 536   unsigned hourglass_p : 1;
 537
 538   /* Flag to set when the X window needs to be completely repainted.  */
 539   int needs_exposure;
 540
 541   /* These are the current window manager hints.  It seems that
 542      XSetWMHints, when presented with an unset bit in the `flags'
 543      member of the hints structure, does not leave the corresponding
 544      attribute unchanged; rather, it resets that attribute to its
 545      default value.  For example, unless you set the `icon_pixmap'
 546      field and the `IconPixmapHint' bit, XSetWMHints will forget what
 547      your icon pixmap was.  This is rather troublesome, since some of
 548      the members (for example, `input' and `icon_pixmap') want to stay
 549      the same throughout the execution of Emacs.  So, we keep this
 550      structure around, just leaving values in it and adding new bits
 551      to the mask as we go.  */
 552   XWMHints wm_hints;
 553
 554   /* The size of the extra width currently allotted for vertical
 555      scroll bars, in pixels.  */
 556   int vertical_scroll_bar_extra;
 557
 558   /* The extra width currently allotted for the areas in which
 559      truncation marks, continuation marks, and overlay arrows are
 560      displayed.  */
 561   int left_fringe_width, right_fringe_width;
 562   int fringe_cols, fringes_extra;
 563
 564   /* This is the gravity value for the specified window position.  */
 565   int win_gravity;
 566
 567   /* The geometry flags for this window.  */
 568   int size_hint_flags;
 569
 570   /* This is the Emacs structure for the X display this frame is on.  */
 571   struct x_display_info *display_info;
 572
 573   /* This is a button event that wants to activate the menubar.
 574      We save it here until the command loop gets to think about it.  */
 575   XEvent *saved_menu_event;
 576
 577   /* This is the widget id used for this frame's menubar in lwlib.  */
 578 #ifdef USE_X_TOOLKIT
 579   int id;
 580 #endif
 581
 582   /* Nonzero means our parent is another application's window
 583      and was explicitly specified.  */
 584   char explicit_parent;
 585
 586   /* Nonzero means tried already to make this frame visible.  */
 587   char asked_for_visible;
 588
 589   /* Nonzero if this frame was ever previously visible.  */
 590   char has_been_visible;
 591
 592 #ifdef HAVE_X_I18N
 593   /* Input context (currently, this means Compose key handler setup).  */
 594   XIC xic;
 595   XIMStyle xic_style;
 596   XFontSet xic_xfs;
 597 #endif
 598
 599   /* Relief GCs, colors etc.  */
 600   struct relief
 601   {
 602     GC gc;
 603     unsigned long pixel;
 604     int allocated_p;
 605   }
 606   black_relief, white_relief;
 607
 608   /* The background for which the above relief GCs were set up.
 609      They are changed only when a different background is involved.  */
 610   unsigned long relief_background;
 611
 612   /* Xt waits for a ConfigureNotify event from the window manager in
 613      EmacsFrameSetCharSize when the shell widget is resized.  For some
 614      window managers like fvwm2 2.2.5 and KDE 2.1 this event doesn't
 615      arrive for an unknown reason and Emacs hangs in Xt.  If this is
 616      zero, tell Xt not to wait.  */
 617   int wait_for_wm;
 618
 619   /* See enum below */
 620   int want_fullscreen;
 621
 622   /* This many pixels are the difference between the outer window (i.e. the
 623      left of the window manager decoration) and FRAME_X_WINDOW. */
 624   int x_pixels_diff;
 625
 626   /* This many pixels are the difference between the outer window (i.e. the
 627      top of the window manager titlebar) and FRAME_X_WINDOW. */
 628   int y_pixels_diff;
 629
 630   /* As x_pixels_diff, but to FRAME_OUTER_WINDOW.  For some reason the
 631      two might differ by a pixel, depending on WM */
 632   int x_pixels_outer_diff;
 633
 634   /* As y_pixels_diff, but to FRAME_OUTER_WINDOW.  In the toolkit version,
 635      these may differ because this does not take into account possible
 636      menubar.  y_pixels_diff is with menubar height included */
 637   int y_pixels_outer_diff;
 638
 639   /* Keep track of focus.  May be EXPLICIT if we received a FocusIn for this
 640      frame, or IMPLICIT if we received an EnterNotify.
 641      FocusOut and LeaveNotify clears EXPLICIT/IMPLICIT. */
 642   int focus_state;
 643 };
 644
 645 #define No_Cursor (None)
 646
 647 enum
 648 {
 649   /* Values for focus_state, used as bit mask.
 650      EXPLICIT means we received a FocusIn for the frame and know it has
 651      the focus.  IMPLICIT means we recevied an EnterNotify and the frame
 652      may have the focus if no window manager is running.
 653      FocusOut and LeaveNotify clears EXPLICIT/IMPLICIT. */
 654   FOCUS_NONE     = 0,
 655   FOCUS_IMPLICIT = 1,
 656   FOCUS_EXPLICIT = 2
 657 };
 658
 659
 660 /* Return the X output data for frame F.  */
 661 #define FRAME_X_OUTPUT(f) ((f)->output_data.x)
 662
 663 /* Return the X window used for displaying data in frame F.  */
 664 #define FRAME_X_WINDOW(f) ((f)->output_data.x->window_desc)
 665
 666 /* Return the outermost X window associated with the frame F.  */
 667 #ifdef USE_X_TOOLKIT
 668 #define FRAME_OUTER_WINDOW(f) ((f)->output_data.x->widget ?             \
 669                                XtWindow ((f)->output_data.x->widget) :  \
 670                                FRAME_X_WINDOW (f))
 671 #else
 672 #ifdef USE_GTK
 673 #define GTK_WIDGET_TO_X_WIN(w) \
 674   ((w) && (w)->window ? GDK_WINDOW_XWINDOW ((w)->window) : 0)
 675
 676 #define FRAME_GTK_OUTER_WIDGET(f) ((f)->output_data.x->widget)
 677 #define FRAME_GTK_WIDGET(f) ((f)->output_data.x->edit_widget)
 678 #define FRAME_OUTER_WINDOW(f)                                   \
 679        (FRAME_GTK_OUTER_WIDGET (f) ?                            \
 680         GTK_WIDGET_TO_X_WIN (FRAME_GTK_OUTER_WIDGET (f)) :      \
 681          FRAME_X_WINDOW (f))
 682
 683 #else /* !USE_GTK */
 684 #define FRAME_OUTER_WINDOW(f) (FRAME_X_WINDOW (f))
 685 #endif /* !USE_GTK */
 686 #endif
 687
 688
 689 #define FRAME_FONT(f) ((f)->output_data.x->font)
 690 #define FRAME_FONTSET(f) ((f)->output_data.x->fontset)
 691 #define FRAME_INTERNAL_BORDER_WIDTH(f) ((f)->output_data.x->internal_border_width)
 692 #define FRAME_MENUBAR_HEIGHT(f) ((f)->output_data.x->menubar_height)
 693 #define FRAME_TOOLBAR_HEIGHT(f) ((f)->output_data.x->toolbar_height)
 694 #define FRAME_LINE_HEIGHT(f) ((f)->output_data.x->line_height)
 695
 696 /* Width of the default font of frame F.  Must be defined by each
 697    terminal specific header.  */
 698 #define FRAME_DEFAULT_FONT_WIDTH(F)     FONT_WIDTH (FRAME_FONT (F))
 699 #define FRAME_BASELINE_OFFSET(f) ((f)->output_data.x->baseline_offset)
 700
 701 /* This gives the x_display_info structure for the display F is on.  */
 702 #define FRAME_X_DISPLAY_INFO(f) ((f)->output_data.x->display_info)
 703
 704 /* This is the `Display *' which frame F is on.  */
 705 #define FRAME_X_DISPLAY(f) (FRAME_X_DISPLAY_INFO (f)->display)
 706
 707 /* This is the `Screen *' which frame F is on.  */
 708 #define FRAME_X_SCREEN(f) (FRAME_X_DISPLAY_INFO (f)->screen)
 709 #define FRAME_X_SCREEN_NUMBER(f) XScreenNumberOfScreen (FRAME_X_SCREEN (f))
 710
 711 /* This is the Visual which frame F is on.  */
 712 #define FRAME_X_VISUAL(f) FRAME_X_DISPLAY_INFO (f)->visual
 713
 714 /* This is the Colormap which frame F uses.  */
 715 #define FRAME_X_COLORMAP(f) FRAME_X_DISPLAY_INFO (f)->cmap
 716
 717 /* This is the 'font_info *' which frame F has.  */
 718 #define FRAME_X_FONT_TABLE(f) (FRAME_X_DISPLAY_INFO (f)->font_table)
 719
 720 /* These two really ought to be called FRAME_PIXEL_{WIDTH,HEIGHT}.  */
 721 #define PIXEL_WIDTH(f) ((f)->output_data.x->pixel_width)
 722 #define PIXEL_HEIGHT(f) ((f)->output_data.x->pixel_height)
 723
 724 /* The difference in pixels between the top left corner of the
 725    Emacs window (including possible window manager decorations)
 726    and FRAME_X_WINDOW (f).  */
 727 #define FRAME_OUTER_TO_INNER_DIFF_X(f) \
 728      ((f)->output_data.x->x_pixels_outer_diff)
 729 #define FRAME_OUTER_TO_INNER_DIFF_Y(f)          \
 730      ((f)->output_data.x->y_pixels_outer_diff   \
 731       + FRAME_MENUBAR_HEIGHT (f) + FRAME_TOOLBAR_HEIGHT (f))
 732
 733
 734 #define FRAME_XIC(f) ((f)->output_data.x->xic)
 735 #define FRAME_X_XIM(f) (FRAME_X_DISPLAY_INFO (f)->xim)
 736 #define FRAME_X_XIM_STYLES(f) (FRAME_X_DISPLAY_INFO (f)->xim_styles)
 737 #define FRAME_XIC_STYLE(f) ((f)->output_data.x->xic_style)
 738 #define FRAME_XIC_FONTSET(f) ((f)->output_data.x->xic_xfs)
 739
 740 /* Value is the smallest width of any character in any font on frame F.  */
 741
 742 #define FRAME_SMALLEST_CHAR_WIDTH(F) \
 743      FRAME_X_DISPLAY_INFO(F)->smallest_char_width
 744
 745 /* Value is the smallest height of any font on frame F.  */
 746
 747 #define FRAME_SMALLEST_FONT_HEIGHT(F) \
 748      FRAME_X_DISPLAY_INFO(F)->smallest_font_height
 749
 750 /* Return a pointer to the image cache of frame F.  */
 751
 752 #define FRAME_X_IMAGE_CACHE(F) FRAME_X_DISPLAY_INFO ((F))->image_cache
 753
 754 \f
 755 /* Total width of fringes reserved for drawing truncation bitmaps,
 756    continuation bitmaps and alike.  The width is in canonical char
 757    units of the frame.  This must currently be the case because window
 758    sizes aren't pixel values.  If it weren't the case, we wouldn't be
 759    able to split windows horizontally nicely.  */
 760
 761 #define FRAME_X_FRINGE_COLS(F)  ((F)->output_data.x->fringe_cols)
 762
 763 /* Total width of fringes in pixels.  */
 764
 765 #define FRAME_X_FRINGE_WIDTH(F) ((F)->output_data.x->fringes_extra)
 766
 767 /* Pixel-width of the left and right fringe.  */
 768
 769 #define FRAME_X_LEFT_FRINGE_WIDTH(F) ((F)->output_data.x->left_fringe_width)
 770 #define FRAME_X_RIGHT_FRINGE_WIDTH(F) ((F)->output_data.x->right_fringe_width)
 771
 772
 773 \f
 774 /* X-specific scroll bar stuff.  */
 775
 776 /* We represent scroll bars as lisp vectors.  This allows us to place
 777    references to them in windows without worrying about whether we'll
 778    end up with windows referring to dead scroll bars; the garbage
 779    collector will free it when its time comes.
 780
 781    We use struct scroll_bar as a template for accessing fields of the
 782    vector.  */
 783
 784 struct scroll_bar
 785 {
 786   /* These fields are shared by all vectors.  */
 787   EMACS_INT size_from_Lisp_Vector_struct;
 788   struct Lisp_Vector *next_from_Lisp_Vector_struct;
 789
 790   /* The window we're a scroll bar for.  */
 791   Lisp_Object window;
 792
 793   /* The next and previous in the chain of scroll bars in this frame.  */
 794   Lisp_Object next, prev;
 795
 796   /* The X window representing this scroll bar.  Since this is a full
 797      32-bit quantity, we store it split into two 32-bit values.  */
 798   Lisp_Object x_window_low, x_window_high;
 799
 800   /* The position and size of the scroll bar in pixels, relative to the
 801      frame.  */
 802   Lisp_Object top, left, width, height;
 803
 804   /* The starting and ending positions of the handle, relative to the
 805      handle area (i.e. zero is the top position, not
 806      SCROLL_BAR_TOP_BORDER).  If they're equal, that means the handle
 807      hasn't been drawn yet.
 808
 809      These are not actually the locations where the beginning and end
 810      are drawn; in order to keep handles from becoming invisible when
 811      editing large files, we establish a minimum height by always
 812      drawing handle bottoms VERTICAL_SCROLL_BAR_MIN_HANDLE pixels below
 813      where they would be normally; the bottom and top are in a
 814      different co-ordinate system.  */
 815   Lisp_Object start, end;
 816
 817   /* If the scroll bar handle is currently being dragged by the user,
 818      this is the number of pixels from the top of the handle to the
 819      place where the user grabbed it.  If the handle isn't currently
 820      being dragged, this is Qnil.  */
 821   Lisp_Object dragging;
 822 };
 823
 824 /* The number of elements a vector holding a struct scroll_bar needs.  */
 825 #define SCROLL_BAR_VEC_SIZE                                     \
 826   ((sizeof (struct scroll_bar)                                  \
 827     - sizeof (EMACS_INT) - sizeof (struct Lisp_Vector *))       \
 828    / sizeof (Lisp_Object))
 829
 830 /* Turning a lisp vector value into a pointer to a struct scroll_bar.  */
 831 #define XSCROLL_BAR(vec) ((struct scroll_bar *) XVECTOR (vec))
 832
 833
 834 /* Building a 32-bit C integer from two 16-bit lisp integers.  */
 835 #define SCROLL_BAR_PACK(low, high) (XINT (high) << 16 | XINT (low))
 836
 837 /* Setting two lisp integers to the low and high words of a 32-bit C int.  */
 838 #define SCROLL_BAR_UNPACK(low, high, int32) \
 839   (XSETINT ((low),   (int32)        & 0xffff), \
 840    XSETINT ((high), ((int32) >> 16) & 0xffff))
 841
 842
 843 /* Extract the X window id of the scroll bar from a struct scroll_bar.  */
 844 #define SCROLL_BAR_X_WINDOW(ptr) \
 845   ((Window) SCROLL_BAR_PACK ((ptr)->x_window_low, (ptr)->x_window_high))
 846
 847 /* Store a window id in a struct scroll_bar.  */
 848 #define SET_SCROLL_BAR_X_WINDOW(ptr, id) \
 849   (SCROLL_BAR_UNPACK ((ptr)->x_window_low, (ptr)->x_window_high, (int) id))
 850
 851 /* Extract the X widget of the scroll bar from a struct scroll_bar.
 852    XtWindowToWidget should be fast enough since Xt uses a hash table
 853    to map windows to widgets.  */
 854
 855 #define SCROLL_BAR_X_WIDGET(dpy, ptr) \
 856   XtWindowToWidget (dpy, SCROLL_BAR_X_WINDOW (ptr))
 857
 858 /* Store a widget id in a struct scroll_bar.  */
 859
 860 #define SET_SCROLL_BAR_X_WIDGET(ptr, w)         \
 861   do {                                          \
 862     Window window = XtWindow (w);               \
 863     SET_SCROLL_BAR_X_WINDOW (ptr, window);      \
 864 } while (0)
 865
 866
 867 /* Return the inside width of a vertical scroll bar, given the outside
 868    width.  */
 869 #define VERTICAL_SCROLL_BAR_INSIDE_WIDTH(f, width) \
 870   ((width) \
 871    - VERTICAL_SCROLL_BAR_LEFT_BORDER \
 872    - VERTICAL_SCROLL_BAR_RIGHT_BORDER \
 873    - VERTICAL_SCROLL_BAR_WIDTH_TRIM * 2)
 874
 875 /* Return the length of the rectangle within which the top of the
 876    handle must stay.  This isn't equivalent to the inside height,
 877    because the scroll bar handle has a minimum height.
 878
 879    This is the real range of motion for the scroll bar, so when we're
 880    scaling buffer positions to scroll bar positions, we use this, not
 881    VERTICAL_SCROLL_BAR_INSIDE_HEIGHT.  */
 882 #define VERTICAL_SCROLL_BAR_TOP_RANGE(f, height) \
 883   (VERTICAL_SCROLL_BAR_INSIDE_HEIGHT (f, height) - VERTICAL_SCROLL_BAR_MIN_HANDLE)
 884
 885 /* Return the inside height of vertical scroll bar, given the outside
 886    height.  See VERTICAL_SCROLL_BAR_TOP_RANGE too.  */
 887 #define VERTICAL_SCROLL_BAR_INSIDE_HEIGHT(f, height) \
 888   ((height) - VERTICAL_SCROLL_BAR_TOP_BORDER - VERTICAL_SCROLL_BAR_BOTTOM_BORDER)
 889
 890
 891 /* Border widths for scroll bars.
 892
 893    Scroll bar windows don't have any X borders; their border width is
 894    set to zero, and we redraw borders ourselves.  This makes the code
 895    a bit cleaner, since we don't have to convert between outside width
 896    (used when relating to the rest of the screen) and inside width
 897    (used when sizing and drawing the scroll bar window itself).
 898
 899    The handle moves up and down/back and forth in a rectangle inset
 900    from the edges of the scroll bar.  These are widths by which we
 901    inset the handle boundaries from the scroll bar edges.  */
 902 #define VERTICAL_SCROLL_BAR_LEFT_BORDER (2)
 903 #define VERTICAL_SCROLL_BAR_RIGHT_BORDER (2)
 904 #define VERTICAL_SCROLL_BAR_TOP_BORDER (2)
 905 #define VERTICAL_SCROLL_BAR_BOTTOM_BORDER (2)
 906
 907 /* Minimum lengths for scroll bar handles, in pixels.  */
 908 #define VERTICAL_SCROLL_BAR_MIN_HANDLE (5)
 909
 910 /* Trimming off a few pixels from each side prevents
 911    text from glomming up against the scroll bar */
 912 #define VERTICAL_SCROLL_BAR_WIDTH_TRIM (0)
 913
 914 \f
 915 /* Manipulating pixel sizes and character sizes.
 916    Knowledge of which factors affect the overall size of the window should
 917    be hidden in these macros, if that's possible.
 918
 919    Return the upper/left pixel position of the character cell on frame F
 920    at ROW/COL.  */
 921 #define CHAR_TO_PIXEL_ROW(f, row) \
 922   ((f)->output_data.x->internal_border_width \
 923    + (row) * (f)->output_data.x->line_height)
 924 #define CHAR_TO_PIXEL_COL(f, col) \
 925   ((f)->output_data.x->internal_border_width \
 926    + (col) * FONT_WIDTH ((f)->output_data.x->font))
 927
 928 /* Return the pixel width/height of frame F if it has
 929    WIDTH columns/HEIGHT rows.  */
 930 #define CHAR_TO_PIXEL_WIDTH(f, width) \
 931   (CHAR_TO_PIXEL_COL (f, width) \
 932    + (f)->output_data.x->vertical_scroll_bar_extra \
 933    + (f)->output_data.x->fringes_extra \
 934    + (f)->output_data.x->internal_border_width)
 935 #define CHAR_TO_PIXEL_HEIGHT(f, height) \
 936   (CHAR_TO_PIXEL_ROW (f, height) \
 937    + (f)->output_data.x->internal_border_width)
 938
 939
 940 /* Return the row/column (zero-based) of the character cell containing
 941    the pixel on FRAME at ROW/COL.  */
 942 #define PIXEL_TO_CHAR_ROW(f, row) \
 943   (((row) - (f)->output_data.x->internal_border_width) \
 944    / (f)->output_data.x->line_height)
 945 #define PIXEL_TO_CHAR_COL(f, col) \
 946   (((col) - (f)->output_data.x->internal_border_width) \
 947    / FONT_WIDTH ((f)->output_data.x->font))
 948
 949 /* How many columns/rows of text can we fit in WIDTH/HEIGHT pixels on
 950    frame F?  */
 951 #define PIXEL_TO_CHAR_WIDTH(f, width) \
 952   (PIXEL_TO_CHAR_COL (f, ((width) \
 953                           - (f)->output_data.x->internal_border_width \
 954                           - (f)->output_data.x->fringes_extra \
 955                           - (f)->output_data.x->vertical_scroll_bar_extra)))
 956 #define PIXEL_TO_CHAR_HEIGHT(f, height) \
 957   (PIXEL_TO_CHAR_ROW (f, ((height) \
 958                           - (f)->output_data.x->internal_border_width)))
 959
 960 \f
 961 /* If a struct input_event has a kind which is SELECTION_REQUEST_EVENT
 962    or SELECTION_CLEAR_EVENT, then its contents are really described
 963    by this structure.  */
 964
 965 /* For an event of kind SELECTION_REQUEST_EVENT,
 966    this structure really describes the contents.
 967    **Don't make this struct longer!**
 968    If it overlaps the frame_or_window field of struct input_event,
 969    that will cause GC to crash.  */
 970 struct selection_input_event
 971 {
 972   int kind;
 973   Display *display;
 974   /* We spell it with an "o" here because X does.  */
 975   Window requestor;
 976   Atom selection, target, property;
 977   Time time;
 978 };
 979
 980 #define SELECTION_EVENT_DISPLAY(eventp) \
 981   (((struct selection_input_event *) (eventp))->display)
 982 /* We spell it with an "o" here because X does.  */
 983 #define SELECTION_EVENT_REQUESTOR(eventp)       \
 984   (((struct selection_input_event *) (eventp))->requestor)
 985 #define SELECTION_EVENT_SELECTION(eventp)       \
 986   (((struct selection_input_event *) (eventp))->selection)
 987 #define SELECTION_EVENT_TARGET(eventp)  \
 988   (((struct selection_input_event *) (eventp))->target)
 989 #define SELECTION_EVENT_PROPERTY(eventp)        \
 990   (((struct selection_input_event *) (eventp))->property)
 991 #define SELECTION_EVENT_TIME(eventp)    \
 992   (((struct selection_input_event *) (eventp))->time)
 993
 994 \f
 995 struct window;
 996 struct glyph_matrix;
 997 struct frame;
 998 struct input_event;
 999 struct face;
1000 struct image;
1001
1002 /* From xselect.c.  */
1003
1004 void x_handle_selection_notify P_ ((XSelectionEvent *));
1005 void x_handle_property_notify P_ ((XPropertyEvent *));
1006
1007 /* From xfns.c.  */
1008
1009 Lisp_Object display_x_get_resource P_ ((struct x_display_info *,
1010                                         Lisp_Object, Lisp_Object,
1011                                         Lisp_Object, Lisp_Object));
1012 struct frame *check_x_frame P_ ((Lisp_Object));
1013 EXFUN (Fx_display_color_p, 1);
1014 EXFUN (Fx_display_grayscale_p, 1);
1015 int image_ascent P_ ((struct image *, struct face *));
1016 extern void x_free_gcs P_ ((struct frame *));
1017
1018 /* From xrdb.c.  */
1019
1020 char *x_get_customization_string P_ ((XrmDatabase, char *, char *));
1021 XrmDatabase x_load_resources P_ ((Display *, char *, char *, char *));
1022 int x_get_resource P_ ((XrmDatabase, char *, char *,
1023                         XrmRepresentation, XrmValue *));
1024 void x_delete_display P_ ((struct x_display_info *));
1025 void x_make_frame_visible P_ ((struct frame *));
1026 void x_iconify_frame P_ ((struct frame *));
1027 void x_wm_set_size_hint P_ ((struct frame *, long, int));
1028 int x_catch_errors P_ ((Display *));
1029 int x_had_errors_p P_ ((Display *));
1030 void x_uncatch_errors P_ ((Display *, int));
1031 void x_check_errors P_ ((Display *, char *));
1032 int x_text_icon P_ ((struct frame *, char *));
1033 int x_bitmap_icon P_ ((struct frame *, Lisp_Object));
1034 void x_set_window_size P_ ((struct frame *, int, int, int));
1035 void x_wm_set_window_state P_ ((struct frame *, int));
1036 int x_alloc_nearest_color P_ ((struct frame *, Colormap, XColor *));
1037
1038 /* Defined in xterm.c */
1039
1040 extern void cancel_mouse_face P_ ((struct frame *));
1041 extern void x_scroll_bar_clear P_ ((struct frame *));
1042 extern void x_start_queuing_selection_requests P_ ((Display *));
1043 extern void x_stop_queuing_selection_requests P_ ((Display *));
1044 extern int x_text_icon P_ ((struct frame *, char *));
1045 extern int x_bitmap_icon P_ ((struct frame *, Lisp_Object));
1046 extern int x_catch_errors P_ ((Display *));
1047 extern void x_check_errors P_ ((Display *, char *));
1048 extern int x_had_errors_p P_ ((Display *));
1049 extern void x_uncatch_errors P_ ((Display *, int));
1050 extern void x_set_window_size P_ ((struct frame *, int, int, int));
1051 extern void x_set_mouse_position P_ ((struct frame *, int, int));
1052 extern void x_set_mouse_pixel_position P_ ((struct frame *, int, int));
1053 extern void x_raise_frame P_ ((struct frame *));
1054 extern void x_lower_frame P_ ((struct frame *));
1055 extern void x_make_frame_visible P_ ((struct frame *));
1056 extern void x_make_frame_invisible P_ ((struct frame *));
1057 extern void x_iconify_frame P_ ((struct frame *));
1058 extern void x_free_frame_resources P_ ((struct frame *));
1059 extern void x_destroy_window P_ ((struct frame *));
1060 extern void x_wm_set_size_hint P_ ((struct frame *, long, int));
1061 extern void x_wm_set_window_state P_ ((struct frame *, int));
1062 extern void x_wm_set_icon_pixmap P_ ((struct frame *, int));
1063 extern void x_delete_display P_ ((struct x_display_info *));
1064 extern void x_initialize P_ ((void));
1065 extern unsigned long x_copy_color P_ ((struct frame *, unsigned long));
1066 #ifdef USE_X_TOOLKIT
1067 extern XtAppContext Xt_app_con;
1068 #endif
1069 extern void x_query_colors P_ ((struct frame *f, XColor *, int));
1070 extern void x_query_color P_ ((struct frame *f, XColor *));
1071 extern void x_clear_area P_ ((Display *, Window, int, int, int, int, int));
1072
1073 extern int x_dispatch_event P_ ((XEvent *, Display *));
1074
1075 /* Defined in xselect.c */
1076
1077 extern void x_handle_property_notify P_ ((XPropertyEvent *));
1078 extern void x_handle_selection_notify P_ ((XSelectionEvent *));
1079 extern void x_handle_selection_request P_ ((struct input_event *));
1080 extern void x_handle_selection_clear P_ ((struct input_event *));
1081 extern void x_clear_frame_selections P_ ((struct frame *));
1082
1083 /* Defined in xfns.c */
1084
1085 extern int have_menus_p P_ ((void));
1086 extern int x_bitmap_height P_ ((struct frame *, int));
1087 extern int x_bitmap_width P_ ((struct frame *, int));
1088 extern int x_bitmap_pixmap P_ ((struct frame *, int));
1089 extern void x_reference_bitmap P_ ((struct frame *, int));
1090 extern int x_create_bitmap_from_data P_ ((struct frame *, char *,
1091                                           unsigned int, unsigned int));
1092 extern int x_create_bitmap_from_file P_ ((struct frame *, Lisp_Object));
1093 extern void x_destroy_bitmap P_ ((struct frame *, int));
1094 extern void x_real_positions P_ ((struct frame *, int *, int *));
1095 extern int defined_color P_ ((struct frame *, char *, XColor *, int));
1096 extern void x_set_border_pixel P_ ((struct frame *, int));
1097 extern void x_set_menu_bar_lines P_ ((struct frame *, Lisp_Object, Lisp_Object));
1098 extern unsigned char * x_encode_text P_ ((Lisp_Object, Lisp_Object, int,
1099                                           int *, int *));
1100 extern void x_implicitly_set_name P_ ((struct frame *, Lisp_Object, Lisp_Object));
1101 extern void create_frame_xic P_ ((struct frame *));
1102 extern void destroy_frame_xic P_ ((struct frame *));
1103 extern void xic_set_preeditarea P_ ((struct window *, int, int));
1104 extern void xic_set_statusarea P_ ((struct frame *));
1105 extern void xic_set_xfontset P_ ((struct frame *, char *));
1106 extern int x_pixel_width P_ ((struct frame *));
1107 extern int x_pixel_height P_ ((struct frame *));
1108 extern int x_char_width P_ ((struct frame *));
1109 extern int x_char_height P_ ((struct frame *));
1110 extern int x_screen_planes P_ ((struct frame *));
1111 extern void x_sync P_ ((struct frame *));
1112 extern int x_defined_color P_ ((struct frame *, char *, XColor *, int));
1113 #ifdef HAVE_X_I18N
1114 extern void free_frame_xic P_ ((struct frame *));
1115 #endif
1116 extern void x_set_tool_bar_lines P_ ((struct frame *, Lisp_Object, Lisp_Object));
1117
1118 /* Defined in xfaces.c */
1119
1120 extern int frame_update_line_height P_ ((struct frame *));
1121 extern int compute_glyph_face P_ ((struct frame *, int, int));
1122 extern int compute_glyph_face_1 P_ ((struct frame *, Lisp_Object, int));
1123 extern void x_free_dpy_colors P_ ((Display *, Screen *, Colormap,
1124                                    unsigned long *, int));
1125
1126 /* Defined in xmenu.c */
1127
1128 extern void x_activate_menubar P_ ((struct frame *));
1129 extern int popup_activated P_ ((void));
1130 extern void initialize_frame_menubar P_ ((struct frame *));
1131
1132 /* Defined in widget.c */
1133
1134 #ifdef USE_X_TOOLKIT
1135 extern void widget_store_internal_border P_ ((Widget));
1136 #endif
1137
1138 /* Defined in xsmfns.c */
1139 #ifdef HAVE_X_SM
1140 extern void x_session_initialize P_ ((void));
1141 extern int x_session_check_input P_ ((struct input_event *bufp,
1142                                       int *numchars));
1143 extern int x_session_have_connection P_ ((void));
1144 #endif
1145
1146 #define FONT_TYPE_FOR_UNIBYTE(font, ch) 0
1147 #define FONT_TYPE_FOR_MULTIBYTE(font, ch) 0
1148
1149 #define STORE_XCHAR2B(chp, b1, b2) \
1150   ((chp)->byte1 = (b1), (chp)->byte2 = (b2))
1151
1152 #define XCHAR2B_BYTE1(chp) \
1153   ((chp)->byte1)
1154
1155 #define XCHAR2B_BYTE2(chp) \
1156   ((chp)->byte2)
1157
1158
1159 #define STORE_NATIVE_RECT(nr,rx,ry,rwidth,rheight)      \
1160   ((nr).x = (rx),                                       \
1161    (nr).y = (ry),                                       \
1162    (nr).width = (rwidth),                               \
1163    (nr).height = (rheight))