src/xterm.h

   1 /* Definitions and headers for communication with X protocol.
   2    Copyright (C) 1989, 1993-1994, 1998-2016 Free Software Foundation,
   3    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 3 of the License, or
  10 (at your option) 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.  If not, see <http://www.gnu.org/licenses/>.  */
  19
  20 #ifndef XTERM_H
  21 #define XTERM_H
  22
  23 #include <X11/Xlib.h>
  24 #include <X11/cursorfont.h>
  25
  26 /* Include Xutil.h after keysym.h to work around a bug that prevents
  27    correct recognition of AltGr key in some X versions.  */
  28
  29 #include <X11/keysym.h>
  30 #include <X11/Xutil.h>
  31
  32 #include <X11/Xatom.h>
  33 #include <X11/Xresource.h>
  34
  35 #ifdef USE_X_TOOLKIT
  36 #include <X11/StringDefs.h>
  37 #include <X11/IntrinsicP.h>     /* CoreP.h needs this */
  38 #include <X11/CoreP.h>          /* foul, but we need this to use our own
  39                                    window inside a widget instead of one
  40                                    that Xt creates... */
  41 typedef Widget xt_or_gtk_widget;
  42 #endif
  43
  44 #ifdef USE_GTK
  45 #include <gtk/gtk.h>
  46 #include <gdk/gdkx.h>
  47
  48 /* Some definitions to reduce conditionals.  */
  49 typedef GtkWidget *xt_or_gtk_widget;
  50 #undef XSync
  51 #define XSync(d, b) do { gdk_window_process_all_updates (); \
  52                          XSync (d, b);  } while (false)
  53 #endif /* USE_GTK */
  54
  55 /* True iff GTK's version is at least I.J.K.  */
  56 #ifndef GTK_CHECK_VERSION
  57 # ifdef USE_GTK
  58 #  define GTK_CHECK_VERSION(i, j, k) \
  59      ((i) \
  60       < GTK_MAJOR_VERSION + ((j) \
  61                              < GTK_MINOR_VERSION + ((k) \
  62                                                     <= GTK_MICRO_VERSION)))
  63 # else
  64 #  define GTK_CHECK_VERSION(i, j, k) false
  65 # endif
  66 #endif
  67
  68 /* The GtkTooltip API came in 2.12, but gtk-enable-tooltips in 2.14. */
  69 #if GTK_CHECK_VERSION (2, 14, 0)
  70 #define USE_GTK_TOOLTIP
  71 #endif
  72
  73 #ifdef USE_CAIRO
  74 #include <cairo-xlib.h>
  75 #ifdef CAIRO_HAS_PDF_SURFACE
  76 #include <cairo-pdf.h>
  77 #endif
  78 #ifdef CAIRO_HAS_PS_SURFACE
  79 #include <cairo-ps.h>
  80 #endif
  81 #ifdef CAIRO_HAS_SVG_SURFACE
  82 #include <cairo-svg.h>
  83 #endif
  84 #endif
  85
  86 #ifdef HAVE_X_I18N
  87 #include <X11/Xlocale.h>
  88 #endif
  89
  90 #ifdef USE_XCB
  91 #include <X11/Xlib-xcb.h>
  92 #endif
  93
  94 #include "dispextern.h"
  95 #include "termhooks.h"
  96
  97 INLINE_HEADER_BEGIN
  98
  99 /* Black and white pixel values for the screen which frame F is on.  */
 100 #define BLACK_PIX_DEFAULT(f)                                    \
 101   BlackPixel (FRAME_X_DISPLAY (f), FRAME_X_SCREEN_NUMBER (f))
 102 #define WHITE_PIX_DEFAULT(f)                                    \
 103   WhitePixel (FRAME_X_DISPLAY (f), FRAME_X_SCREEN_NUMBER (f))
 104
 105 /* The mask of events that text windows always want to receive.  This
 106    includes mouse movement events, since handling the mouse-font text property
 107    means that we must track mouse motion all the time.  */
 108
 109 #define STANDARD_EVENT_SET      \
 110   (KeyPressMask                 \
 111    | ExposureMask               \
 112    | ButtonPressMask            \
 113    | ButtonReleaseMask          \
 114    | PointerMotionMask          \
 115    | StructureNotifyMask        \
 116    | FocusChangeMask            \
 117    | LeaveWindowMask            \
 118    | EnterWindowMask            \
 119    | VisibilityChangeMask)
 120
 121 #ifdef HAVE_X11R6_XIM
 122 /* Data structure passed to xim_instantiate_callback.  */
 123 struct xim_inst_t
 124 {
 125   struct x_display_info *dpyinfo;
 126   char *resource_name;
 127 };
 128 #endif /* HAVE_X11R6_XIM */
 129
 130 /* Structure recording X pixmap and reference count.
 131    If REFCOUNT is 0 then this record is free to be reused.  */
 132
 133 struct x_bitmap_record
 134 {
 135 #ifdef USE_CAIRO
 136   void *img;
 137 #endif
 138   Pixmap pixmap;
 139   bool have_mask;
 140   Pixmap mask;
 141   char *file;
 142   int refcount;
 143   /* Record some info about this pixmap.  */
 144   int height, width, depth;
 145 };
 146 \f
 147 #ifdef USE_CAIRO
 148 struct x_gc_ext_data
 149 {
 150 #define MAX_CLIP_RECTS 2
 151   /* Number of clipping rectangles.  */
 152   int n_clip_rects;
 153
 154   /* Clipping rectangles.  */
 155   XRectangle clip_rects[MAX_CLIP_RECTS];
 156 };
 157 #endif
 158
 159 \f
 160 struct color_name_cache_entry
 161 {
 162   struct color_name_cache_entry *next;
 163   XColor rgb;
 164   char *name;
 165 };
 166
 167 Status x_parse_color (struct frame *f, const char *color_name,
 168                       XColor *color);
 169
 170 \f
 171 /* For each X display, we have a structure that records
 172    information about it.  */
 173
 174 struct x_display_info
 175 {
 176   /* Chain of all x_display_info structures.  */
 177   struct x_display_info *next;
 178
 179   /* The generic display parameters corresponding to this X display. */
 180   struct terminal *terminal;
 181
 182   /* This says how to access this display in Xlib.  */
 183   Display *display;
 184
 185   /* A connection number (file descriptor) for the display.  */
 186   int connection;
 187
 188   /* This is a cons cell of the form (NAME . FONT-LIST-CACHE).  */
 189   Lisp_Object name_list_element;
 190
 191   /* Number of frames that are on this display.  */
 192   int reference_count;
 193
 194   /* The Screen this connection is connected to.  */
 195   Screen *screen;
 196
 197   /* Dots per inch of the screen.  */
 198   double resx, resy;
 199
 200   /* The Visual being used for this display.  */
 201   Visual *visual;
 202
 203   /* The colormap being used.  */
 204   Colormap cmap;
 205
 206   /* Number of planes on this screen.  */
 207   int n_planes;
 208
 209   /* Mask of things that cause the mouse to be grabbed.  */
 210   int grabbed;
 211
 212   /* Emacs bitmap-id of the default icon bitmap for this frame.
 213      Or -1 if none has been allocated yet.  */
 214   ptrdiff_t icon_bitmap_id;
 215
 216   /* The root window of this screen.  */
 217   Window root_window;
 218
 219   /* Client leader window.  */
 220   Window client_leader_window;
 221
 222   /* The cursor to use for vertical scroll bars.  */
 223   Cursor vertical_scroll_bar_cursor;
 224
 225   /* The cursor to use for horizontal scroll bars.  */
 226   Cursor horizontal_scroll_bar_cursor;
 227
 228   /* The invisible cursor used for pointer blanking.
 229      Unused if this display supports Xfixes extension.  */
 230   Cursor invisible_cursor;
 231
 232   /* Function used to toggle pointer visibility on this display.  */
 233   void (*toggle_visible_pointer) (struct frame *, bool);
 234
 235 #ifdef USE_GTK
 236   /* The GDK cursor for scroll bars and popup menus.  */
 237   GdkCursor *xg_cursor;
 238 #endif
 239
 240   /* X Resource data base */
 241   XrmDatabase xrdb;
 242
 243   /* Minimum width over all characters in all fonts in font_table.  */
 244   int smallest_char_width;
 245
 246   /* Minimum font height over all fonts in font_table.  */
 247   int smallest_font_height;
 248
 249   /* Reusable Graphics Context for drawing a cursor in a non-default face. */
 250   GC scratch_cursor_gc;
 251
 252   /* Information about the range of text currently shown in
 253      mouse-face.  */
 254   Mouse_HLInfo mouse_highlight;
 255
 256   /* Logical identifier of this display.  */
 257   unsigned x_id;
 258
 259   /* Default name for all frames on this display.  */
 260   char *x_id_name;
 261
 262   /* The number of fonts opened for this display.  */
 263   int n_fonts;
 264
 265   /* Pointer to bitmap records.  */
 266   struct x_bitmap_record *bitmaps;
 267
 268   /* Allocated size of bitmaps field.  */
 269   ptrdiff_t bitmaps_size;
 270
 271   /* Last used bitmap index.  */
 272   ptrdiff_t bitmaps_last;
 273
 274   /* Which modifier keys are on which modifier bits?
 275
 276      With each keystroke, X returns eight bits indicating which modifier
 277      keys were held down when the key was pressed.  The interpretation
 278      of the top five modifier bits depends on what keys are attached
 279      to them.  If the Meta_L and Meta_R keysyms are on mod5, then mod5
 280      is the meta bit.
 281
 282      meta_mod_mask is a mask containing the bits used for the meta key.
 283      It may have more than one bit set, if more than one modifier bit
 284      has meta keys on it.  Basically, if EVENT is a KeyPress event,
 285      the meta key is pressed if (EVENT.state & meta_mod_mask) != 0.
 286
 287      shift_lock_mask is LockMask if the XK_Shift_Lock keysym is on the
 288      lock modifier bit, or zero otherwise.  Non-alphabetic keys should
 289      only be affected by the lock modifier bit if XK_Shift_Lock is in
 290      use; XK_Caps_Lock should only affect alphabetic keys.  With this
 291      arrangement, the lock modifier should shift the character if
 292      (EVENT.state & shift_lock_mask) != 0.  */
 293   int meta_mod_mask, shift_lock_mask;
 294
 295   /* These are like meta_mod_mask, but for different modifiers.  */
 296   int alt_mod_mask, super_mod_mask, hyper_mod_mask;
 297
 298   /* Communication with window managers.  */
 299   Atom Xatom_wm_protocols;
 300
 301   /* Kinds of protocol things we may receive.  */
 302   Atom Xatom_wm_take_focus;
 303   Atom Xatom_wm_save_yourself;
 304   Atom Xatom_wm_delete_window;
 305
 306   /* Atom for indicating window state to the window manager.  */
 307   Atom Xatom_wm_change_state;
 308
 309   /* Other WM communication */
 310   Atom Xatom_wm_configure_denied; /* When our config request is denied */
 311   Atom Xatom_wm_window_moved;     /* When the WM moves us.  */
 312   Atom Xatom_wm_client_leader;    /* Id of client leader window.  */
 313
 314   /* EditRes protocol */
 315   Atom Xatom_editres;
 316
 317   /* More atoms, which are selection types.  */
 318   Atom Xatom_CLIPBOARD, Xatom_TIMESTAMP, Xatom_TEXT, Xatom_DELETE,
 319   Xatom_COMPOUND_TEXT, Xatom_UTF8_STRING,
 320   Xatom_MULTIPLE, Xatom_INCR, Xatom_EMACS_TMP, Xatom_TARGETS, Xatom_NULL,
 321   Xatom_ATOM, Xatom_ATOM_PAIR, Xatom_CLIPBOARD_MANAGER;
 322
 323   /* More atoms for font properties.  The last three are private
 324      properties, see the comments in src/fontset.h.  */
 325   Atom Xatom_PIXEL_SIZE, Xatom_AVERAGE_WIDTH,
 326   Xatom_MULE_BASELINE_OFFSET, Xatom_MULE_RELATIVE_COMPOSE,
 327   Xatom_MULE_DEFAULT_ASCENT;
 328
 329   /* More atoms for Ghostscript support.  */
 330   Atom Xatom_DONE, Xatom_PAGE;
 331
 332   /* Atoms used in toolkit scroll bar client messages.  */
 333   Atom Xatom_Scrollbar, Xatom_Horizontal_Scrollbar;
 334
 335   /* Atom used in XEmbed client messages.  */
 336   Atom Xatom_XEMBED, Xatom_XEMBED_INFO;
 337
 338   /* The frame (if any) which has the X window that has keyboard focus.
 339      Zero if none.  This is examined by Ffocus_frame in xfns.c.  Note
 340      that a mere EnterNotify event can set this; if you need to know the
 341      last frame specified in a FocusIn or FocusOut event, use
 342      x_focus_event_frame.  */
 343   struct frame *x_focus_frame;
 344
 345   /* The last frame mentioned in a FocusIn or FocusOut event.  This is
 346      separate from x_focus_frame, because whether or not LeaveNotify
 347      events cause us to lose focus depends on whether or not we have
 348      received a FocusIn event for it.  */
 349   struct frame *x_focus_event_frame;
 350
 351   /* The frame which currently has the visual highlight, and should get
 352      keyboard input (other sorts of input have the frame encoded in the
 353      event).  It points to the X focus frame's selected window's
 354      frame.  It differs from x_focus_frame when we're using a global
 355      minibuffer.  */
 356   struct frame *x_highlight_frame;
 357
 358   /* The frame waiting to be auto-raised in XTread_socket.  */
 359   struct frame *x_pending_autoraise_frame;
 360
 361   /* The frame where the mouse was last time we reported a ButtonPress event.  */
 362   struct frame *last_mouse_frame;
 363
 364   /* The frame where the mouse was last time we reported a mouse position.  */
 365   struct frame *last_mouse_glyph_frame;
 366
 367   /* The frame where the mouse was last time we reported a mouse motion.  */
 368   struct frame *last_mouse_motion_frame;
 369
 370   /* The scroll bar in which the last X motion event occurred.  */
 371   struct scroll_bar *last_mouse_scroll_bar;
 372
 373   /* Time of last user interaction as returned in X events on this display.  */
 374   Time last_user_time;
 375
 376   /* Position where the mouse was last time we reported a motion.
 377      This is a position on last_mouse_motion_frame.  */
 378   int last_mouse_motion_x;
 379   int last_mouse_motion_y;
 380
 381   /* Where the mouse was last time we reported a mouse position.
 382      This is a rectangle on last_mouse_glyph_frame.  */
 383   XRectangle last_mouse_glyph;
 384
 385   /* Time of last mouse movement on this display.  This is a hack because
 386      we would really prefer that XTmouse_position would return the time
 387      associated with the position it returns, but there doesn't seem to be
 388      any way to wrest the time-stamp from the server along with the position
 389      query.  So, we just keep track of the time of the last movement we
 390      received, and return that in hopes that it's somewhat accurate.  */
 391   Time last_mouse_movement_time;
 392
 393   /* The gray pixmap.  */
 394   Pixmap gray;
 395
 396 #ifdef HAVE_X_I18N
 397   /* XIM (X Input method).  */
 398   XIM xim;
 399   XIMStyles *xim_styles;
 400   struct xim_inst_t *xim_callback_data;
 401 #endif
 402
 403   /* A cache mapping color names to RGB values.  */
 404   struct color_name_cache_entry *color_names;
 405
 406   /* If non-null, a cache of the colors in the color map.  Don't
 407      use this directly, call x_color_cells instead.  */
 408   XColor *color_cells;
 409   int ncolor_cells;
 410
 411   /* Bits and shifts to use to compose pixel values on TrueColor visuals.  */
 412   int red_bits, blue_bits, green_bits;
 413   int red_offset, blue_offset, green_offset;
 414
 415   /* The type of window manager we have.  If we move FRAME_OUTER_WINDOW
 416      to x/y 0/0, some window managers (type A) puts the window manager
 417      decorations outside the screen and FRAME_OUTER_WINDOW exactly at 0/0.
 418      Other window managers (type B) puts the window including decorations
 419      at 0/0, so FRAME_OUTER_WINDOW is a bit below 0/0.
 420      Record the type of WM in use so we can compensate for type A WMs.  */
 421   enum
 422     {
 423       X_WMTYPE_UNKNOWN,
 424       X_WMTYPE_A,
 425       X_WMTYPE_B
 426     } wm_type;
 427
 428
 429   /* Atoms that are drag and drop atoms */
 430   Atom *x_dnd_atoms;
 431   ptrdiff_t x_dnd_atoms_size;
 432   ptrdiff_t x_dnd_atoms_length;
 433
 434   /* Extended window manager hints, Atoms supported by the window manager and
 435      atoms for setting the window type.  */
 436   Atom Xatom_net_supported, Xatom_net_supporting_wm_check;
 437   Atom *net_supported_atoms;
 438   int nr_net_supported_atoms;
 439   Window net_supported_window;
 440   Atom Xatom_net_window_type, Xatom_net_window_type_tooltip;
 441   Atom Xatom_net_active_window;
 442
 443   /* Atoms dealing with EWMH (i.e. _NET_...) */
 444   Atom Xatom_net_wm_state, Xatom_net_wm_state_fullscreen,
 445     Xatom_net_wm_state_maximized_horz, Xatom_net_wm_state_maximized_vert,
 446     Xatom_net_wm_state_sticky, Xatom_net_wm_state_hidden,
 447     Xatom_net_frame_extents,
 448     Xatom_net_current_desktop, Xatom_net_workarea;
 449
 450   /* XSettings atoms and windows.  */
 451   Atom Xatom_xsettings_sel, Xatom_xsettings_prop, Xatom_xsettings_mgr;
 452   Window xsettings_window;
 453
 454   /* Frame name and icon name */
 455   Atom Xatom_net_wm_name, Xatom_net_wm_icon_name;
 456   /* Frame opacity */
 457   Atom Xatom_net_wm_window_opacity;
 458
 459   /* SM */
 460   Atom Xatom_SM_CLIENT_ID;
 461
 462 #ifdef USE_CAIRO
 463   XExtCodes *ext_codes;
 464 #endif
 465
 466 #ifdef USE_XCB
 467   xcb_connection_t *xcb_connection;
 468 #endif
 469 };
 470
 471 #ifdef HAVE_X_I18N
 472 /* Whether or not to use XIM if we have it.  */
 473 extern bool use_xim;
 474 #endif
 475
 476 /* This is a chain of structures for all the X displays currently in use.  */
 477 extern struct x_display_info *x_display_list;
 478
 479 extern struct x_display_info *x_display_info_for_display (Display *);
 480 extern struct frame *x_top_window_to_frame (struct x_display_info *, int);
 481 extern struct x_display_info *x_term_init (Lisp_Object, char *, char *);
 482 extern bool x_display_ok (const char *);
 483
 484 extern void select_visual (struct x_display_info *);
 485
 486 /* Each X frame object points to its own struct x_output object
 487    in the output_data.x field.  The x_output structure contains
 488    the information that is specific to X windows.  */
 489
 490 struct x_output
 491 {
 492 #if defined (USE_X_TOOLKIT) || defined (USE_GTK)
 493   /* Height of menu bar widget, in pixels.  This value
 494      is not meaningful if the menubar is turned off.  */
 495   int menubar_height;
 496 #endif
 497
 498   /* Height of tool bar widget, in pixels.  top_height is used if tool bar
 499      at top, bottom_height if tool bar is at the bottom.
 500      Zero if not using an external tool bar or if tool bar is vertical.  */
 501   int toolbar_top_height, toolbar_bottom_height;
 502
 503   /* Width of tool bar widget, in pixels.  left_width is used if tool bar
 504      at left, right_width if tool bar is at the right.
 505      Zero if not using an external tool bar or if tool bar is horizontal.  */
 506   int toolbar_left_width, toolbar_right_width;
 507
 508   /* The tiled border used when the mouse is out of the frame.  */
 509   Pixmap border_tile;
 510
 511   /* Here are the Graphics Contexts for the default font.  */
 512   GC normal_gc;                         /* Normal video */
 513   GC reverse_gc;                        /* Reverse video */
 514   GC cursor_gc;                         /* cursor drawing */
 515
 516   /* The X window used for this frame.
 517      May be zero while the frame object is being created
 518      and the X window has not yet been created.  */
 519   Window window_desc;
 520
 521   /* The X window used for the bitmap icon;
 522      or 0 if we don't have a bitmap icon.  */
 523   Window icon_desc;
 524
 525   /* The X window that is the parent of this X window.
 526      Usually this is a window that was made by the window manager,
 527      but it can be the root window, and it can be explicitly specified
 528      (see the explicit_parent field, below).  */
 529   Window parent_desc;
 530
 531 #ifdef USE_X_TOOLKIT
 532   /* The widget of this screen.  This is the window of a "shell" widget.  */
 533   Widget widget;
 534   /* The XmPanedWindows...  */
 535   Widget column_widget;
 536   /* The widget of the edit portion of this screen; the window in
 537      "window_desc" is inside of this.  */
 538   Widget edit_widget;
 539
 540   Widget menubar_widget;
 541 #endif
 542
 543 #ifdef USE_GTK
 544   /* The widget of this screen.  This is the window of a top widget.  */
 545   GtkWidget *widget;
 546   /* The widget of the edit portion of this screen; the window in
 547      "window_desc" is inside of this.  */
 548   GtkWidget *edit_widget;
 549   /* The widget used for laying out widgets vertically.  */
 550   GtkWidget *vbox_widget;
 551   /* The widget used for laying out widgets horizontally.  */
 552   GtkWidget *hbox_widget;
 553   /* The menubar in this frame.  */
 554   GtkWidget *menubar_widget;
 555   /* The tool bar in this frame  */
 556   GtkWidget *toolbar_widget;
 557   /* True if tool bar is packed into the hbox widget (i.e. vertical).  */
 558   bool_bf toolbar_in_hbox : 1;
 559   bool_bf toolbar_is_packed : 1;
 560
 561   /* The last size hints set.  */
 562   GdkGeometry size_hints;
 563   long hint_flags;
 564
 565 #ifdef USE_GTK_TOOLTIP
 566   GtkTooltip *ttip_widget;
 567   GtkWidget *ttip_lbl;
 568   GtkWindow *ttip_window;
 569 #endif /* USE_GTK_TOOLTIP */
 570
 571 #endif /* USE_GTK */
 572
 573   /* If >=0, a bitmap index.  The indicated bitmap is used for the
 574      icon. */
 575   ptrdiff_t icon_bitmap;
 576
 577   /* Default ASCII font of this frame.  */
 578   struct font *font;
 579
 580   /* The baseline offset of the default ASCII font.  */
 581   int baseline_offset;
 582
 583   /* If a fontset is specified for this frame instead of font, this
 584      value contains an ID of the fontset, else -1.  */
 585   int fontset;
 586
 587   unsigned long cursor_pixel;
 588   unsigned long border_pixel;
 589   unsigned long mouse_pixel;
 590   unsigned long cursor_foreground_pixel;
 591
 592   /* Foreground color for scroll bars.  A value of -1 means use the
 593      default (black for non-toolkit scroll bars).  */
 594   unsigned long scroll_bar_foreground_pixel;
 595
 596   /* Background color for scroll bars.  A value of -1 means use the
 597      default (background color of the frame for non-toolkit scroll
 598      bars).  */
 599   unsigned long scroll_bar_background_pixel;
 600
 601 #if defined (USE_LUCID) && defined (USE_TOOLKIT_SCROLL_BARS)
 602   /* Top and bottom shadow colors for 3D Lucid scrollbars.
 603      -1 means let the scroll compute them itself.  */
 604   unsigned long scroll_bar_top_shadow_pixel;
 605   unsigned long scroll_bar_bottom_shadow_pixel;
 606 #endif
 607
 608   /* Descriptor for the cursor in use for this window.  */
 609   Cursor text_cursor;
 610   Cursor nontext_cursor;
 611   Cursor modeline_cursor;
 612   Cursor hand_cursor;
 613   Cursor hourglass_cursor;
 614   Cursor horizontal_drag_cursor;
 615   Cursor vertical_drag_cursor;
 616   Cursor current_cursor;
 617
 618   /* Window whose cursor is hourglass_cursor.  This window is temporarily
 619      mapped to display an hourglass cursor.  */
 620   Window hourglass_window;
 621
 622   /* These are the current window manager hints.  It seems that
 623      XSetWMHints, when presented with an unset bit in the `flags'
 624      member of the hints structure, does not leave the corresponding
 625      attribute unchanged; rather, it resets that attribute to its
 626      default value.  For example, unless you set the `icon_pixmap'
 627      field and the `IconPixmapHint' bit, XSetWMHints will forget what
 628      your icon pixmap was.  This is rather troublesome, since some of
 629      the members (for example, `input' and `icon_pixmap') want to stay
 630      the same throughout the execution of Emacs.  So, we keep this
 631      structure around, just leaving values in it and adding new bits
 632      to the mask as we go.  */
 633   XWMHints wm_hints;
 634
 635   /* This is the Emacs structure for the X display this frame is on.  */
 636   struct x_display_info *display_info;
 637
 638   /* This is a button event that wants to activate the menubar.
 639      We save it here until the command loop gets to think about it.  */
 640   XEvent *saved_menu_event;
 641
 642   /* This is the widget id used for this frame's menubar in lwlib.  */
 643 #ifdef USE_X_TOOLKIT
 644   int id;
 645 #endif
 646
 647   /* True means hourglass cursor is currently displayed.  */
 648   bool_bf hourglass_p : 1;
 649
 650   /* True means our parent is another application's window
 651      and was explicitly specified.  */
 652   bool_bf explicit_parent : 1;
 653
 654   /* True means tried already to make this frame visible.  */
 655   bool_bf asked_for_visible : 1;
 656
 657   /* True if this frame was ever previously visible.  */
 658   bool_bf has_been_visible : 1;
 659
 660   /* Xt waits for a ConfigureNotify event from the window manager in
 661      EmacsFrameSetCharSize when the shell widget is resized.  For some
 662      window managers like fvwm2 2.2.5 and KDE 2.1 this event doesn't
 663      arrive for an unknown reason and Emacs hangs in Xt.  If this is
 664      false, tell Xt not to wait.  */
 665   bool_bf wait_for_wm : 1;
 666
 667 #ifdef HAVE_X_I18N
 668   /* Input context (currently, this means Compose key handler setup).  */
 669   XIC xic;
 670   XIMStyle xic_style;
 671   XFontSet xic_xfs;
 672 #endif
 673
 674   /* Relief GCs, colors etc.  */
 675   struct relief
 676   {
 677     GC gc;
 678     unsigned long pixel;
 679   }
 680   black_relief, white_relief;
 681
 682   /* The background for which the above relief GCs were set up.
 683      They are changed only when a different background is involved.  */
 684   unsigned long relief_background;
 685
 686   /* Keep track of focus.  May be EXPLICIT if we received a FocusIn for this
 687      frame, or IMPLICIT if we received an EnterNotify.
 688      FocusOut and LeaveNotify clears EXPLICIT/IMPLICIT. */
 689   int focus_state;
 690
 691   /* The offset we need to add to compensate for type A WMs.  */
 692   int move_offset_top;
 693   int move_offset_left;
 694
 695 /* Extreme 'short' and 'long' values suitable for libX11.  */
 696 #define X_SHRT_MAX 0x7fff
 697 #define X_SHRT_MIN (-1 - X_SHRT_MAX)
 698 #define X_LONG_MAX 0x7fffffff
 699 #define X_LONG_MIN (-1 - X_LONG_MAX)
 700 #define X_ULONG_MAX 0xffffffffUL
 701
 702 #ifdef USE_CAIRO
 703   /* Cairo drawing context.  */
 704   cairo_t *cr_context;
 705   /* Cairo surface for double buffering */
 706   cairo_surface_t *cr_surface;
 707 #endif
 708 };
 709
 710 #define No_Cursor (None)
 711
 712 enum
 713 {
 714   /* Values for focus_state, used as bit mask.
 715      EXPLICIT means we received a FocusIn for the frame and know it has
 716      the focus.  IMPLICIT means we received an EnterNotify and the frame
 717      may have the focus if no window manager is running.
 718      FocusOut and LeaveNotify clears EXPLICIT/IMPLICIT. */
 719   FOCUS_NONE     = 0,
 720   FOCUS_IMPLICIT = 1,
 721   FOCUS_EXPLICIT = 2
 722 };
 723
 724
 725 /* Return the X output data for frame F.  */
 726 #define FRAME_X_OUTPUT(f) ((f)->output_data.x)
 727
 728 /* Return the X window used for displaying data in frame F.  */
 729 #define FRAME_X_WINDOW(f) ((f)->output_data.x->window_desc)
 730
 731 /* Return the outermost X window associated with the frame F.  */
 732 #ifdef USE_X_TOOLKIT
 733 #define FRAME_OUTER_WINDOW(f) ((f)->output_data.x->widget ?             \
 734                                XtWindow ((f)->output_data.x->widget) :  \
 735                                FRAME_X_WINDOW (f))
 736 #else
 737 #ifdef USE_GTK
 738 /* Functions not present in older Gtk+ */
 739
 740 #ifndef HAVE_GTK_WIDGET_GET_WINDOW
 741 #define gtk_widget_get_window(w) ((w)->window)
 742 #endif
 743 #ifndef HAVE_GTK_WIDGET_GET_MAPPED
 744 #define gtk_widget_get_mapped(w) (GTK_WIDGET_MAPPED (w))
 745 #endif
 746 #ifndef HAVE_GTK_ADJUSTMENT_GET_PAGE_SIZE
 747 #define gtk_adjustment_get_page_size(w) ((w)->page_size)
 748 #define gtk_adjustment_get_upper(w) ((w)->upper)
 749 #endif
 750
 751 #ifdef HAVE_GTK3
 752 #define DEFAULT_GDK_DISPLAY() \
 753   gdk_x11_display_get_xdisplay (gdk_display_get_default ())
 754 #else
 755 #undef GDK_WINDOW_XID
 756 #define GDK_WINDOW_XID(w) GDK_WINDOW_XWINDOW (w)
 757 #define DEFAULT_GDK_DISPLAY() GDK_DISPLAY ()
 758 #define gtk_widget_get_preferred_size(a, ign, b) \
 759   gtk_widget_size_request (a, b)
 760 #endif
 761
 762 #define GTK_WIDGET_TO_X_WIN(w) \
 763   ((w) && gtk_widget_get_window (w) \
 764    ? GDK_WINDOW_XID (gtk_widget_get_window (w)) : 0)
 765
 766 #define FRAME_GTK_OUTER_WIDGET(f) ((f)->output_data.x->widget)
 767 #define FRAME_GTK_WIDGET(f) ((f)->output_data.x->edit_widget)
 768 #define FRAME_OUTER_WINDOW(f)                                   \
 769        (FRAME_GTK_OUTER_WIDGET (f) ?                            \
 770         GTK_WIDGET_TO_X_WIN (FRAME_GTK_OUTER_WIDGET (f)) :      \
 771          FRAME_X_WINDOW (f))
 772
 773 #else /* !USE_GTK */
 774 #define FRAME_OUTER_WINDOW(f) (FRAME_X_WINDOW (f))
 775 #endif /* !USE_GTK */
 776 #endif
 777
 778 #if defined (USE_X_TOOLKIT) || defined (USE_GTK)
 779 #define FRAME_MENUBAR_HEIGHT(f) ((f)->output_data.x->menubar_height)
 780 #else
 781 #define FRAME_MENUBAR_HEIGHT(f) ((void) f, 0)
 782 #endif /* USE_X_TOOLKIT || USE_GTK */
 783
 784 #define FRAME_FONT(f) ((f)->output_data.x->font)
 785 #define FRAME_FONTSET(f) ((f)->output_data.x->fontset)
 786 #define FRAME_TOOLBAR_TOP_HEIGHT(f) ((f)->output_data.x->toolbar_top_height)
 787 #define FRAME_TOOLBAR_BOTTOM_HEIGHT(f) \
 788   ((f)->output_data.x->toolbar_bottom_height)
 789 #define FRAME_TOOLBAR_HEIGHT(f) \
 790   (FRAME_TOOLBAR_TOP_HEIGHT (f) + FRAME_TOOLBAR_BOTTOM_HEIGHT (f))
 791 #define FRAME_TOOLBAR_LEFT_WIDTH(f) ((f)->output_data.x->toolbar_left_width)
 792 #define FRAME_TOOLBAR_RIGHT_WIDTH(f) ((f)->output_data.x->toolbar_right_width)
 793 #define FRAME_TOOLBAR_WIDTH(f) \
 794   (FRAME_TOOLBAR_LEFT_WIDTH (f) + FRAME_TOOLBAR_RIGHT_WIDTH (f))
 795 #define FRAME_BASELINE_OFFSET(f) ((f)->output_data.x->baseline_offset)
 796
 797 /* This gives the x_display_info structure for the display F is on.  */
 798 #define FRAME_DISPLAY_INFO(f) ((f)->output_data.x->display_info)
 799
 800 /* This is the `Display *' which frame F is on.  */
 801 #define FRAME_X_DISPLAY(f) (FRAME_DISPLAY_INFO (f)->display)
 802
 803 /* This is the `Screen *' which frame F is on.  */
 804 #define FRAME_X_SCREEN(f) (FRAME_DISPLAY_INFO (f)->screen)
 805
 806 /* This is the screen index number of screen which frame F is on.  */
 807 #define FRAME_X_SCREEN_NUMBER(f) XScreenNumberOfScreen (FRAME_X_SCREEN (f))
 808
 809 /* This is the Visual which frame F is on.  */
 810 #define FRAME_X_VISUAL(f) FRAME_DISPLAY_INFO (f)->visual
 811
 812 /* This is the Colormap which frame F uses.  */
 813 #define FRAME_X_COLORMAP(f) FRAME_DISPLAY_INFO (f)->cmap
 814
 815 #define FRAME_XIC(f) ((f)->output_data.x->xic)
 816 #define FRAME_X_XIM(f) (FRAME_DISPLAY_INFO (f)->xim)
 817 #define FRAME_X_XIM_STYLES(f) (FRAME_DISPLAY_INFO (f)->xim_styles)
 818 #define FRAME_XIC_STYLE(f) ((f)->output_data.x->xic_style)
 819 #define FRAME_XIC_FONTSET(f) ((f)->output_data.x->xic_xfs)
 820
 821 /* X-specific scroll bar stuff.  */
 822
 823 /* We represent scroll bars as lisp vectors.  This allows us to place
 824    references to them in windows without worrying about whether we'll
 825    end up with windows referring to dead scroll bars; the garbage
 826    collector will free it when its time comes.
 827
 828    We use struct scroll_bar as a template for accessing fields of the
 829    vector.  */
 830
 831 struct scroll_bar
 832 {
 833   /* These fields are shared by all vectors.  */
 834   struct vectorlike_header header;
 835
 836   /* The window we're a scroll bar for.  */
 837   Lisp_Object window;
 838
 839   /* The next and previous in the chain of scroll bars in this frame.  */
 840   Lisp_Object next, prev;
 841
 842   /* Fields from `x_window' down will not be traced by the GC.  */
 843
 844   /* The X window representing this scroll bar.  */
 845   Window x_window;
 846
 847   /* The position and size of the scroll bar in pixels, relative to the
 848      frame.  */
 849   int top, left, width, height;
 850
 851   /* The starting and ending positions of the handle, relative to the
 852      handle area (i.e. zero is the top position, not
 853      SCROLL_BAR_TOP_BORDER).  If they're equal, that means the handle
 854      hasn't been drawn yet.
 855
 856      These are not actually the locations where the beginning and end
 857      are drawn; in order to keep handles from becoming invisible when
 858      editing large files, we establish a minimum height by always
 859      drawing handle bottoms VERTICAL_SCROLL_BAR_MIN_HANDLE pixels below
 860      where they would be normally; the bottom and top are in a
 861      different co-ordinate system.  */
 862   int start, end;
 863
 864   /* If the scroll bar handle is currently being dragged by the user,
 865      this is the number of pixels from the top of the handle to the
 866      place where the user grabbed it.  If the handle isn't currently
 867      being dragged, this is -1.  */
 868   int dragging;
 869
 870 #if defined (USE_TOOLKIT_SCROLL_BARS) && defined (USE_LUCID)
 871   /* Last scroll bar part seen in xaw_jump_callback and xaw_scroll_callback.  */
 872   enum scroll_bar_part last_seen_part;
 873 #endif
 874
 875 #if defined (USE_TOOLKIT_SCROLL_BARS) && !defined (USE_GTK)
 876   /* Last value of whole for horizontal scrollbars.  */
 877   int whole;
 878 #endif
 879
 880   /* True if the scroll bar is horizontal.  */
 881   bool horizontal;
 882 };
 883
 884 /* Turning a lisp vector value into a pointer to a struct scroll_bar.  */
 885 #define XSCROLL_BAR(vec) ((struct scroll_bar *) XVECTOR (vec))
 886
 887 #ifdef USE_X_TOOLKIT
 888
 889 /* Extract the X widget of the scroll bar from a struct scroll_bar.
 890    XtWindowToWidget should be fast enough since Xt uses a hash table
 891    to map windows to widgets.  */
 892
 893 #define SCROLL_BAR_X_WIDGET(dpy, ptr) \
 894   XtWindowToWidget (dpy, ptr->x_window)
 895
 896 /* Store a widget id in a struct scroll_bar.  */
 897
 898 #define SET_SCROLL_BAR_X_WIDGET(ptr, w)         \
 899   do {                                          \
 900     Window window = XtWindow (w);               \
 901     ptr->x_window = window;                     \
 902   } while (false)
 903
 904 #endif /* USE_X_TOOLKIT */
 905
 906 /* Return the inside width of a vertical scroll bar, given the outside
 907    width.  */
 908 #define VERTICAL_SCROLL_BAR_INSIDE_WIDTH(f, width) \
 909   ((width) \
 910    - VERTICAL_SCROLL_BAR_LEFT_BORDER \
 911    - VERTICAL_SCROLL_BAR_RIGHT_BORDER)
 912
 913 /* Return the length of the rectangle within which the top of the
 914    handle must stay.  This isn't equivalent to the inside height,
 915    because the scroll bar handle has a minimum height.
 916
 917    This is the real range of motion for the scroll bar, so when we're
 918    scaling buffer positions to scroll bar positions, we use this, not
 919    VERTICAL_SCROLL_BAR_INSIDE_HEIGHT.  */
 920 #define VERTICAL_SCROLL_BAR_TOP_RANGE(f, height) \
 921   (VERTICAL_SCROLL_BAR_INSIDE_HEIGHT (f, height) - VERTICAL_SCROLL_BAR_MIN_HANDLE)
 922
 923 /* Return the inside height of vertical scroll bar, given the outside
 924    height.  See VERTICAL_SCROLL_BAR_TOP_RANGE too.  */
 925 #define VERTICAL_SCROLL_BAR_INSIDE_HEIGHT(f, height) \
 926   ((height) - VERTICAL_SCROLL_BAR_TOP_BORDER - VERTICAL_SCROLL_BAR_BOTTOM_BORDER)
 927
 928 /* Return the inside height of a horizontal scroll bar, given the outside
 929    height.  */
 930 #define HORIZONTAL_SCROLL_BAR_INSIDE_HEIGHT(f, height)  \
 931   ((height) \
 932    - HORIZONTAL_SCROLL_BAR_TOP_BORDER \
 933    - HORIZONTAL_SCROLL_BAR_BOTTOM_BORDER)
 934
 935 /* Return the length of the rectangle within which the left part of the
 936    handle must stay.  This isn't equivalent to the inside width, because
 937    the scroll bar handle has a minimum width.
 938
 939    This is the real range of motion for the scroll bar, so when we're
 940    scaling buffer positions to scroll bar positions, we use this, not
 941    HORIZONTAL_SCROLL_BAR_INSIDE_WIDTH.  */
 942 #define HORIZONTAL_SCROLL_BAR_LEFT_RANGE(f, width) \
 943   (HORIZONTAL_SCROLL_BAR_INSIDE_WIDTH (f, width) - HORIZONTAL_SCROLL_BAR_MIN_HANDLE)
 944
 945 /* Return the inside width of horizontal scroll bar, given the outside
 946    width.  See HORIZONTAL_SCROLL_BAR_LEFT_RANGE too.  */
 947 #define HORIZONTAL_SCROLL_BAR_INSIDE_WIDTH(f, width) \
 948   ((width) - HORIZONTAL_SCROLL_BAR_LEFT_BORDER - HORIZONTAL_SCROLL_BAR_LEFT_BORDER)
 949
 950
 951 /* Border widths for scroll bars.
 952
 953    Scroll bar windows don't have any X borders; their border width is
 954    set to zero, and we redraw borders ourselves.  This makes the code
 955    a bit cleaner, since we don't have to convert between outside width
 956    (used when relating to the rest of the screen) and inside width
 957    (used when sizing and drawing the scroll bar window itself).
 958
 959    The handle moves up and down/back and forth in a rectangle inset
 960    from the edges of the scroll bar.  These are widths by which we
 961    inset the handle boundaries from the scroll bar edges.  */
 962 #define VERTICAL_SCROLL_BAR_LEFT_BORDER (2)
 963 #define VERTICAL_SCROLL_BAR_RIGHT_BORDER (2)
 964 #define VERTICAL_SCROLL_BAR_TOP_BORDER (2)
 965 #define VERTICAL_SCROLL_BAR_BOTTOM_BORDER (2)
 966
 967 #define HORIZONTAL_SCROLL_BAR_LEFT_BORDER (2)
 968 #define HORIZONTAL_SCROLL_BAR_RIGHT_BORDER (2)
 969 #define HORIZONTAL_SCROLL_BAR_TOP_BORDER (2)
 970 #define HORIZONTAL_SCROLL_BAR_BOTTOM_BORDER (2)
 971
 972 /* Minimum lengths for scroll bar handles, in pixels.  */
 973 #define VERTICAL_SCROLL_BAR_MIN_HANDLE (5)
 974 #define HORIZONTAL_SCROLL_BAR_MIN_HANDLE (5)
 975
 976 /* If a struct input_event has a kind which is SELECTION_REQUEST_EVENT
 977    or SELECTION_CLEAR_EVENT, then its contents are really described
 978    by this structure.  */
 979
 980 /* For an event of kind SELECTION_REQUEST_EVENT,
 981    this structure really describes the contents.  */
 982
 983 struct selection_input_event
 984 {
 985   ENUM_BF (event_kind) kind : EVENT_KIND_WIDTH;
 986   struct x_display_info *dpyinfo;
 987   /* We spell it with an "o" here because X does.  */
 988   Window requestor;
 989   Atom selection, target, property;
 990   Time time;
 991 };
 992
 993 /* Unlike macros below, this can't be used as an lvalue.  */
 994 INLINE Display *
 995 SELECTION_EVENT_DISPLAY (struct selection_input_event *ev)
 996 {
 997   return ev->dpyinfo->display;
 998 }
 999 #define SELECTION_EVENT_DPYINFO(eventp) \
1000   ((eventp)->dpyinfo)
1001 /* We spell it with an "o" here because X does.  */
1002 #define SELECTION_EVENT_REQUESTOR(eventp)       \
1003   ((eventp)->requestor)
1004 #define SELECTION_EVENT_SELECTION(eventp)       \
1005   ((eventp)->selection)
1006 #define SELECTION_EVENT_TARGET(eventp)  \
1007   ((eventp)->target)
1008 #define SELECTION_EVENT_PROPERTY(eventp)        \
1009   ((eventp)->property)
1010 #define SELECTION_EVENT_TIME(eventp)    \
1011   ((eventp)->time)
1012
1013 /* From xfns.c.  */
1014
1015 extern void x_free_gcs (struct frame *);
1016 extern void x_relative_mouse_position (struct frame *, int *, int *);
1017 extern void x_real_pos_and_offsets (struct frame *f,
1018                                     int *left_offset_x,
1019                                     int *right_offset_x,
1020                                     int *top_offset_y,
1021                                     int *bottom_offset_y,
1022                                     int *x_pixels_diff,
1023                                     int *y_pixels_diff,
1024                                     int *xptr,
1025                                     int *yptr,
1026                                     int *outer_border);
1027
1028 /* From xrdb.c.  */
1029
1030 XrmDatabase x_load_resources (Display *, const char *, const char *,
1031                               const char *);
1032
1033 /* Defined in xterm.c */
1034
1035 typedef void (*x_special_error_handler)(Display *, XErrorEvent *, char *,
1036                                         void *);
1037
1038 extern bool x_text_icon (struct frame *, const char *);
1039 extern void x_catch_errors (Display *);
1040 extern void x_catch_errors_with_handler (Display *, x_special_error_handler,
1041                                          void *);
1042 extern void x_check_errors (Display *, const char *)
1043   ATTRIBUTE_FORMAT_PRINTF (2, 0);
1044 extern bool x_had_errors_p (Display *);
1045 extern void x_uncatch_errors (void);
1046 extern void x_uncatch_errors_after_check (void);
1047 extern void x_clear_errors (Display *);
1048 extern void xembed_request_focus (struct frame *);
1049 extern void x_ewmh_activate_frame (struct frame *);
1050 extern void x_delete_terminal (struct terminal *terminal);
1051 extern unsigned long x_copy_color (struct frame *, unsigned long);
1052 #ifdef USE_X_TOOLKIT
1053 extern XtAppContext Xt_app_con;
1054 extern void x_activate_timeout_atimer (void);
1055 #endif
1056 #ifdef USE_LUCID
1057 extern bool x_alloc_lighter_color_for_widget (Widget, Display *, Colormap,
1058                                               unsigned long *,
1059                                               double, int);
1060 #endif
1061 extern bool x_alloc_nearest_color (struct frame *, Colormap, XColor *);
1062 extern void x_query_color (struct frame *f, XColor *);
1063 extern void x_clear_area (struct frame *f, int, int, int, int);
1064 #if !defined USE_X_TOOLKIT && !defined USE_GTK
1065 extern void x_mouse_leave (struct x_display_info *);
1066 #endif
1067
1068 #if defined USE_X_TOOLKIT || defined USE_MOTIF
1069 extern int x_dispatch_event (XEvent *, Display *);
1070 #endif
1071 extern int x_x_to_emacs_modifiers (struct x_display_info *, int);
1072 #ifdef USE_CAIRO
1073 extern cairo_t *x_begin_cr_clip (struct frame *, GC);
1074 extern void x_end_cr_clip (struct frame *);
1075 extern void x_set_cr_source_with_gc_foreground (struct frame *, GC);
1076 extern void x_set_cr_source_with_gc_background (struct frame *, GC);
1077 extern void x_cr_draw_frame (cairo_t *, struct frame *);
1078 extern Lisp_Object x_cr_export_frames (Lisp_Object, cairo_surface_type_t);
1079 #endif
1080
1081 INLINE int
1082 x_display_pixel_height (struct x_display_info *dpyinfo)
1083 {
1084   return HeightOfScreen (dpyinfo->screen);
1085 }
1086
1087 INLINE int
1088 x_display_pixel_width (struct x_display_info *dpyinfo)
1089 {
1090   return WidthOfScreen (dpyinfo->screen);
1091 }
1092
1093 INLINE void
1094 x_display_set_last_user_time (struct x_display_info *dpyinfo, Time t)
1095 {
1096 #ifdef ENABLE_CHECKING
1097   eassert (t <= X_ULONG_MAX);
1098 #endif
1099   dpyinfo->last_user_time = t;
1100 }
1101
1102 INLINE unsigned long
1103 x_make_truecolor_pixel (struct x_display_info *dpyinfo, int r, int g, int b)
1104 {
1105   unsigned long pr, pg, pb;
1106
1107   /* Scale down RGB values to the visual's bits per RGB, and shift
1108      them to the right position in the pixel color.  Note that the
1109      original RGB values are 16-bit values, as usual in X.  */
1110   pr = (r >> (16 - dpyinfo->red_bits))   << dpyinfo->red_offset;
1111   pg = (g >> (16 - dpyinfo->green_bits)) << dpyinfo->green_offset;
1112   pb = (b >> (16 - dpyinfo->blue_bits))  << dpyinfo->blue_offset;
1113
1114   /* Assemble the pixel color.  */
1115   return pr | pg | pb;
1116 }
1117
1118 /* If display has an immutable color map, freeing colors is not
1119    necessary and some servers don't allow it, so we won't do it.  That
1120    also allows us to make other optimizations relating to server-side
1121    reference counts.  */
1122 INLINE bool
1123 x_mutable_colormap (Visual *visual)
1124 {
1125   int class = visual->class;
1126   return (class != StaticColor && class != StaticGray && class != TrueColor);
1127 }
1128
1129 extern void x_set_sticky (struct frame *, Lisp_Object, Lisp_Object);
1130 extern bool x_wm_supports (struct frame *, Atom);
1131 extern void x_wait_for_event (struct frame *, int);
1132 extern void x_clear_under_internal_border (struct frame *f);
1133
1134 /* Defined in xselect.c.  */
1135
1136 extern void x_handle_property_notify (const XPropertyEvent *);
1137 extern void x_handle_selection_notify (const XSelectionEvent *);
1138 extern void x_handle_selection_event (struct selection_input_event *);
1139 extern void x_clear_frame_selections (struct frame *);
1140
1141 extern void x_send_client_event (Lisp_Object display,
1142                                  Lisp_Object dest,
1143                                  Lisp_Object from,
1144                                  Atom message_type,
1145                                  Lisp_Object format,
1146                                  Lisp_Object values);
1147
1148 extern bool x_handle_dnd_message (struct frame *,
1149                                   const XClientMessageEvent *,
1150                                   struct x_display_info *,
1151                                   struct input_event *);
1152 extern int x_check_property_data (Lisp_Object);
1153 extern void x_fill_property_data (Display *,
1154                                   Lisp_Object,
1155                                   void *,
1156                                   int);
1157 extern Lisp_Object x_property_data_to_lisp (struct frame *,
1158                                             const unsigned char *,
1159                                             Atom,
1160                                             int,
1161                                             unsigned long);
1162 extern void x_clipboard_manager_save_frame (Lisp_Object);
1163 extern void x_clipboard_manager_save_all (void);
1164
1165 #ifdef USE_GTK
1166 extern bool xg_set_icon (struct frame *, Lisp_Object);
1167 extern bool xg_set_icon_from_xpm_data (struct frame *, const char **);
1168 #endif /* USE_GTK */
1169
1170 extern void xic_free_xfontset (struct frame *);
1171 extern void create_frame_xic (struct frame *);
1172 extern void destroy_frame_xic (struct frame *);
1173 extern void xic_set_preeditarea (struct window *, int, int);
1174 extern void xic_set_statusarea (struct frame *);
1175 extern void xic_set_xfontset (struct frame *, const char *);
1176 extern bool x_defined_color (struct frame *, const char *, XColor *, bool);
1177 #ifdef HAVE_X_I18N
1178 extern void free_frame_xic (struct frame *);
1179 # if defined HAVE_X_WINDOWS && defined USE_X_TOOLKIT
1180 extern char *xic_create_fontsetname (const char *, bool);
1181 # endif
1182 #endif
1183
1184 /* Defined in xfaces.c */
1185
1186 #ifdef USE_X_TOOLKIT
1187 extern void x_free_dpy_colors (Display *, Screen *, Colormap,
1188                                unsigned long *, int);
1189 #endif /* USE_X_TOOLKIT */
1190
1191 /* Defined in xmenu.c */
1192
1193 #if defined USE_X_TOOLKIT || defined USE_GTK
1194 extern Lisp_Object xw_popup_dialog (struct frame *, Lisp_Object, Lisp_Object);
1195 #endif
1196
1197 #if defined USE_GTK || defined USE_MOTIF
1198 extern void x_menu_set_in_use (bool);
1199 #endif
1200 extern void x_menu_wait_for_event (void *data);
1201 extern void initialize_frame_menubar (struct frame *);
1202
1203 /* Defined in xsmfns.c */
1204 #ifdef HAVE_X_SM
1205 extern void x_session_initialize (struct x_display_info *dpyinfo);
1206 extern bool x_session_have_connection (void);
1207 extern void x_session_close (void);
1208 #endif
1209
1210
1211 /* Is the frame embedded into another application? */
1212
1213 #define FRAME_X_EMBEDDED_P(f) (FRAME_X_OUTPUT(f)->explicit_parent != 0)
1214
1215 #define STORE_XCHAR2B(chp, b1, b2) \
1216   ((chp)->byte1 = (b1), (chp)->byte2 = (b2))
1217
1218 #define XCHAR2B_BYTE1(chp) \
1219   ((chp)->byte1)
1220
1221 #define XCHAR2B_BYTE2(chp) \
1222   ((chp)->byte2)
1223
1224 #define STORE_NATIVE_RECT(nr,rx,ry,rwidth,rheight)      \
1225   ((nr).x = (rx),                                       \
1226    (nr).y = (ry),                                       \
1227    (nr).width = (rwidth),                               \
1228    (nr).height = (rheight))
1229
1230 INLINE_HEADER_END
1231
1232 #endif /* XTERM_H */