src/xterm.h

   1 /* Definitions and headers for communication with X protocol.
   2    Copyright (C) 1989, 1993-1994, 1998-2012 Free Software Foundation, Inc.
   3
   4 This file is part of GNU Emacs.
   5
   6 GNU Emacs is free software: you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation, either version 3 of the License, or
   9 (at your option) any later version.
  10
  11 GNU Emacs is distributed in the hope that it will be useful,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 GNU General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
  18
  19 #ifndef XTERM_H
  20 #define XTERM_H
  21
  22 #include <X11/Xlib.h>
  23 #include <X11/cursorfont.h>
  24
  25 /* Include Xutil.h after keysym.h to work around a bug that prevents
  26    correct recognition of AltGr key in some X versions.  */
  27
  28 #include <X11/keysym.h>
  29 #include <X11/Xutil.h>
  30
  31 #include <X11/Xatom.h>
  32 #include <X11/Xresource.h>
  33
  34 #ifdef USE_X_TOOLKIT
  35 #include <X11/StringDefs.h>
  36 #include <X11/IntrinsicP.h>     /* CoreP.h needs this */
  37 #include <X11/CoreP.h>          /* foul, but we need this to use our own
  38                                    window inside a widget instead of one
  39                                    that Xt creates... */
  40 #include <X11/StringDefs.h>
  41
  42 typedef Widget xt_or_gtk_widget;
  43 #endif
  44
  45 #ifdef USE_GTK
  46 #include <gtk/gtk.h>
  47 #include <gdk/gdkx.h>
  48
  49 /* Some definitions to reduce conditionals.  */
  50 typedef GtkWidget *xt_or_gtk_widget;
  51 #define XtParent(x) (gtk_widget_get_parent (x))
  52 #undef XSync
  53 #define XSync(d, b) do { gdk_window_process_all_updates (); \
  54                          XSync (d, b);  } while (0)
  55
  56 /* The GtkTooltip API came in 2.12, but gtk-enable-tooltips in 2.14. */
  57 #if GTK_MAJOR_VERSION > 2 || GTK_MINOR_VERSION > 13
  58 #define USE_GTK_TOOLTIP
  59 #endif
  60
  61 #endif /* USE_GTK */
  62
  63 \f
  64 /* Bookkeeping to distinguish X versions.  */
  65
  66
  67 #ifdef HAVE_X_I18N
  68 #include <X11/Xlocale.h>
  69 #endif
  70 \f
  71 #define BLACK_PIX_DEFAULT(f) BlackPixel (FRAME_X_DISPLAY (f), \
  72                                          XScreenNumberOfScreen (FRAME_X_SCREEN (f)))
  73 #define WHITE_PIX_DEFAULT(f) WhitePixel (FRAME_X_DISPLAY (f), \
  74                                          XScreenNumberOfScreen (FRAME_X_SCREEN (f)))
  75
  76 #define FONT_WIDTH(f)   ((f)->max_width)
  77 #define FONT_HEIGHT(f)  ((f)->ascent + (f)->descent)
  78 #define FONT_BASE(f)    ((f)->ascent)
  79 #define FONT_DESCENT(f) ((f)->descent)
  80
  81 /* The mask of events that text windows always want to receive.  This
  82    includes mouse movement events, since handling the mouse-font text property
  83    means that we must track mouse motion all the time.  */
  84
  85 #define STANDARD_EVENT_SET      \
  86   (KeyPressMask                 \
  87    | ExposureMask               \
  88    | ButtonPressMask            \
  89    | ButtonReleaseMask          \
  90    | PointerMotionMask          \
  91    | StructureNotifyMask        \
  92    | FocusChangeMask            \
  93    | LeaveWindowMask            \
  94    | EnterWindowMask            \
  95    | VisibilityChangeMask)
  96
  97 #ifdef HAVE_X11R6_XIM
  98 /* Data structure passed to xim_instantiate_callback.  */
  99 struct xim_inst_t
 100 {
 101   struct x_display_info *dpyinfo;
 102   char *resource_name;
 103 };
 104 #endif /* HAVE_X11R6_XIM */
 105
 106 /* Structure recording X pixmap and reference count.
 107    If REFCOUNT is 0 then this record is free to be reused.  */
 108
 109 struct x_bitmap_record
 110 {
 111   Pixmap pixmap;
 112   int have_mask;
 113   Pixmap mask;
 114   char *file;
 115   int refcount;
 116   /* Record some info about this pixmap.  */
 117   int height, width, depth;
 118 };
 119 \f
 120 /* For each X display, we have a structure that records
 121    information about it.  */
 122
 123 struct x_display_info
 124 {
 125   /* Chain of all x_display_info structures.  */
 126   struct x_display_info *next;
 127
 128   /* The generic display parameters corresponding to this X display. */
 129   struct terminal *terminal;
 130
 131   /* Connection number (normally a file descriptor number).  */
 132   int connection;
 133
 134   /* This says how to access this display in Xlib.  */
 135   Display *display;
 136
 137   /* This is a cons cell of the form (NAME . FONT-LIST-CACHE).
 138      The same cons cell also appears in x_display_name_list.  */
 139   Lisp_Object name_list_element;
 140
 141   /* Number of frames that are on this display.  */
 142   int reference_count;
 143
 144   /* The Screen this connection is connected to.  */
 145   Screen *screen;
 146
 147   /* Dots per inch of the screen.  */
 148   double resx, resy;
 149
 150   /* The Visual being used for this display.  */
 151   Visual *visual;
 152
 153   /* The colormap being used.  */
 154   Colormap cmap;
 155
 156   /* Number of planes on this screen.  */
 157   int n_planes;
 158
 159   /* Mask of things that cause the mouse to be grabbed.  */
 160   int grabbed;
 161
 162   /* Emacs bitmap-id of the default icon bitmap for this frame.
 163      Or -1 if none has been allocated yet.  */
 164   ptrdiff_t icon_bitmap_id;
 165
 166   /* The root window of this screen.  */
 167   Window root_window;
 168
 169   /* Client leader window.  */
 170   Window client_leader_window;
 171
 172   /* The cursor to use for vertical scroll bars.  */
 173   Cursor vertical_scroll_bar_cursor;
 174
 175   /* The invisible cursor used for pointer blanking.  */
 176   Cursor invisible_cursor;
 177
 178 #ifdef USE_GTK
 179   /* The GDK cursor for scroll bars and popup menus.  */
 180   GdkCursor *xg_cursor;
 181 #endif
 182
 183   /* X Resource data base */
 184   XrmDatabase xrdb;
 185
 186   /* Minimum width over all characters in all fonts in font_table.  */
 187   int smallest_char_width;
 188
 189   /* Minimum font height over all fonts in font_table.  */
 190   int smallest_font_height;
 191
 192   /* Reusable Graphics Context for drawing a cursor in a non-default face. */
 193   GC scratch_cursor_gc;
 194
 195   /* Information about the range of text currently shown in
 196      mouse-face.  */
 197   Mouse_HLInfo mouse_highlight;
 198
 199   char *x_id_name;
 200
 201   /* The number of fonts opened for this display.  */
 202   int n_fonts;
 203
 204   /* Pointer to bitmap records.  */
 205   struct x_bitmap_record *bitmaps;
 206
 207   /* Allocated size of bitmaps field.  */
 208   ptrdiff_t bitmaps_size;
 209
 210   /* Last used bitmap index.  */
 211   ptrdiff_t bitmaps_last;
 212
 213   /* Which modifier keys are on which modifier bits?
 214
 215      With each keystroke, X returns eight bits indicating which modifier
 216      keys were held down when the key was pressed.  The interpretation
 217      of the top five modifier bits depends on what keys are attached
 218      to them.  If the Meta_L and Meta_R keysyms are on mod5, then mod5
 219      is the meta bit.
 220
 221      meta_mod_mask is a mask containing the bits used for the meta key.
 222      It may have more than one bit set, if more than one modifier bit
 223      has meta keys on it.  Basically, if EVENT is a KeyPress event,
 224      the meta key is pressed if (EVENT.state & meta_mod_mask) != 0.
 225
 226      shift_lock_mask is LockMask if the XK_Shift_Lock keysym is on the
 227      lock modifier bit, or zero otherwise.  Non-alphabetic keys should
 228      only be affected by the lock modifier bit if XK_Shift_Lock is in
 229      use; XK_Caps_Lock should only affect alphabetic keys.  With this
 230      arrangement, the lock modifier should shift the character if
 231      (EVENT.state & shift_lock_mask) != 0.  */
 232   int meta_mod_mask, shift_lock_mask;
 233
 234   /* These are like meta_mod_mask, but for different modifiers.  */
 235   int alt_mod_mask, super_mod_mask, hyper_mod_mask;
 236
 237   /* Communication with window managers.  */
 238   Atom Xatom_wm_protocols;
 239
 240   /* Kinds of protocol things we may receive.  */
 241   Atom Xatom_wm_take_focus;
 242   Atom Xatom_wm_save_yourself;
 243   Atom Xatom_wm_delete_window;
 244
 245   /* Atom for indicating window state to the window manager.  */
 246   Atom Xatom_wm_change_state;
 247
 248   /* Other WM communication */
 249   Atom Xatom_wm_configure_denied; /* When our config request is denied */
 250   Atom Xatom_wm_window_moved;     /* When the WM moves us.  */
 251   Atom Xatom_wm_client_leader;    /* Id of client leader window.  */
 252
 253   /* EditRes protocol */
 254   Atom Xatom_editres;
 255
 256   /* More atoms, which are selection types.  */
 257   Atom Xatom_CLIPBOARD, Xatom_TIMESTAMP, Xatom_TEXT, Xatom_DELETE,
 258   Xatom_COMPOUND_TEXT, Xatom_UTF8_STRING,
 259   Xatom_MULTIPLE, Xatom_INCR, Xatom_EMACS_TMP, Xatom_TARGETS, Xatom_NULL,
 260   Xatom_ATOM, Xatom_ATOM_PAIR, Xatom_CLIPBOARD_MANAGER;
 261
 262   /* More atoms for font properties.  The last three are private
 263      properties, see the comments in src/fontset.h.  */
 264   Atom Xatom_PIXEL_SIZE, Xatom_AVERAGE_WIDTH,
 265   Xatom_MULE_BASELINE_OFFSET, Xatom_MULE_RELATIVE_COMPOSE,
 266   Xatom_MULE_DEFAULT_ASCENT;
 267
 268   /* More atoms for Ghostscript support.  */
 269   Atom Xatom_DONE, Xatom_PAGE;
 270
 271   /* Atom used in toolkit scroll bar client messages.  */
 272   Atom Xatom_Scrollbar;
 273
 274   /* Atom used in XEmbed client messages.  */
 275   Atom Xatom_XEMBED, Xatom_XEMBED_INFO;
 276
 277   /* The frame (if any) which has the X window that has keyboard focus.
 278      Zero if none.  This is examined by Ffocus_frame in xfns.c.  Note
 279      that a mere EnterNotify event can set this; if you need to know the
 280      last frame specified in a FocusIn or FocusOut event, use
 281      x_focus_event_frame.  */
 282   struct frame *x_focus_frame;
 283
 284   /* The last frame mentioned in a FocusIn or FocusOut event.  This is
 285      separate from x_focus_frame, because whether or not LeaveNotify
 286      events cause us to lose focus depends on whether or not we have
 287      received a FocusIn event for it.  */
 288   struct frame *x_focus_event_frame;
 289
 290   /* The frame which currently has the visual highlight, and should get
 291      keyboard input (other sorts of input have the frame encoded in the
 292      event).  It points to the X focus frame's selected window's
 293      frame.  It differs from x_focus_frame when we're using a global
 294      minibuffer.  */
 295   struct frame *x_highlight_frame;
 296
 297   /* The gray pixmap.  */
 298   Pixmap gray;
 299
 300 #ifdef HAVE_X_I18N
 301   /* XIM (X Input method).  */
 302   XIM xim;
 303   XIMStyles *xim_styles;
 304   struct xim_inst_t *xim_callback_data;
 305 #endif
 306
 307   /* If non-null, a cache of the colors in the color map.  Don't
 308      use this directly, call x_color_cells instead.  */
 309   XColor *color_cells;
 310   int ncolor_cells;
 311
 312   /* Bits and shifts to use to compose pixel values on TrueColor visuals.  */
 313   int red_bits, blue_bits, green_bits;
 314   int red_offset, blue_offset, green_offset;
 315
 316   /* The type of window manager we have.  If we move FRAME_OUTER_WINDOW
 317      to x/y 0/0, some window managers (type A) puts the window manager
 318      decorations outside the screen and FRAME_OUTER_WINDOW exactly at 0/0.
 319      Other window managers (type B) puts the window including decorations
 320      at 0/0, so FRAME_OUTER_WINDOW is a bit below 0/0.
 321      Record the type of WM in use so we can compensate for type A WMs.  */
 322   enum
 323     {
 324       X_WMTYPE_UNKNOWN,
 325       X_WMTYPE_A,
 326       X_WMTYPE_B
 327     } wm_type;
 328
 329
 330   /* Atoms that are drag and drop atoms */
 331   Atom *x_dnd_atoms;
 332   ptrdiff_t x_dnd_atoms_size;
 333   ptrdiff_t x_dnd_atoms_length;
 334
 335   /* Extended window manager hints, Atoms supported by the window manager and
 336      atoms for setting the window type.  */
 337   Atom Xatom_net_supported, Xatom_net_supporting_wm_check;
 338   Atom *net_supported_atoms;
 339   int nr_net_supported_atoms;
 340   Window net_supported_window;
 341   Atom Xatom_net_window_type, Xatom_net_window_type_tooltip;
 342   Atom Xatom_net_active_window;
 343
 344   /* Atoms dealing with EWMH (i.e. _NET_...) */
 345   Atom Xatom_net_wm_state, Xatom_net_wm_state_fullscreen,
 346     Xatom_net_wm_state_maximized_horz, Xatom_net_wm_state_maximized_vert,
 347     Xatom_net_wm_state_sticky, Xatom_net_wm_state_hidden,
 348     Xatom_net_frame_extents;
 349
 350   /* XSettings atoms and windows.  */
 351   Atom Xatom_xsettings_sel, Xatom_xsettings_prop, Xatom_xsettings_mgr;
 352   Window xsettings_window;
 353
 354   /* Frame name and icon name */
 355   Atom Xatom_net_wm_name, Xatom_net_wm_icon_name;
 356   /* Frame opacity */
 357   Atom Xatom_net_wm_window_opacity;
 358
 359   /* SM */
 360   Atom Xatom_SM_CLIENT_ID;
 361 };
 362
 363 #ifdef HAVE_X_I18N
 364 /* Whether or not to use XIM if we have it.  */
 365 extern int use_xim;
 366 #endif
 367
 368 /* This checks to make sure we have a display.  */
 369
 370 extern void check_x (void);
 371
 372 extern struct frame *x_window_to_frame (struct x_display_info *, int);
 373 extern struct frame *x_any_window_to_frame (struct x_display_info *, int);
 374 extern struct frame *x_menubar_window_to_frame (struct x_display_info *,
 375                                                 XEvent *);
 376 extern struct frame *x_top_window_to_frame (struct x_display_info *, int);
 377
 378 extern struct frame *x_menubar_window_to_frame (struct x_display_info *,
 379                                                 XEvent *);
 380
 381 #if ! defined (USE_X_TOOLKIT) && ! defined (USE_GTK)
 382 #define x_any_window_to_frame x_window_to_frame
 383 #define x_top_window_to_frame x_window_to_frame
 384 #endif
 385
 386 /* This is a chain of structures for all the X displays currently in use.  */
 387 extern struct x_display_info *x_display_list;
 388
 389 /* This is a list of cons cells, each of the form (NAME . FONT-LIST-CACHE),
 390    one for each element of x_display_list and in the same order.
 391    NAME is the name of the frame.
 392    FONT-LIST-CACHE records previous values returned by x-list-fonts.  */
 393 extern Lisp_Object x_display_name_list;
 394
 395 extern struct x_display_info *x_display_info_for_display (Display *);
 396
 397 extern struct x_display_info *x_term_init (Lisp_Object, char *, char *);
 398 extern int x_display_ok  (const char *);
 399
 400 extern void select_visual (struct x_display_info *);
 401
 402 \f
 403 struct font;
 404
 405 /* Each X frame object points to its own struct x_output object
 406    in the output_data.x field.  The x_output structure contains
 407    the information that is specific to X windows.  */
 408
 409 struct x_output
 410 {
 411   /* Height of menu bar widget, in pixels.
 412      Zero if not using the X toolkit.
 413      When using the toolkit, this value is not meaningful
 414      if the menubar is turned off.  */
 415   int menubar_height;
 416
 417   /* Height of tool bar widget, in pixels.  top_height is used if tool bar
 418      at top, bottom_height if tool bar is at the bottom.
 419      Zero if not using an external tool bar or if tool bar is vertical.  */
 420   int toolbar_top_height, toolbar_bottom_height;
 421
 422   /* Width of tool bar widget, in pixels.  left_width is used if tool bar
 423      at left, right_width if tool bar is at the right.
 424      Zero if not using an external tool bar or if tool bar is horizontal.  */
 425   int toolbar_left_width, toolbar_right_width;
 426
 427   /* The tiled border used when the mouse is out of the frame.  */
 428   Pixmap border_tile;
 429
 430   /* Here are the Graphics Contexts for the default font.  */
 431   GC normal_gc;                         /* Normal video */
 432   GC reverse_gc;                        /* Reverse video */
 433   GC cursor_gc;                         /* cursor drawing */
 434
 435   /* The X window used for this frame.
 436      May be zero while the frame object is being created
 437      and the X window has not yet been created.  */
 438   Window window_desc;
 439
 440   /* The X window used for the bitmap icon;
 441      or 0 if we don't have a bitmap icon.  */
 442   Window icon_desc;
 443
 444   /* The X window that is the parent of this X window.
 445      Usually this is a window that was made by the window manager,
 446      but it can be the root window, and it can be explicitly specified
 447      (see the explicit_parent field, below).  */
 448   Window parent_desc;
 449
 450 #ifdef USE_X_TOOLKIT
 451   /* The widget of this screen.  This is the window of a "shell" widget.  */
 452   Widget widget;
 453   /* The XmPanedWindows...  */
 454   Widget column_widget;
 455   /* The widget of the edit portion of this screen; the window in
 456      "window_desc" is inside of this.  */
 457   Widget edit_widget;
 458
 459   Widget menubar_widget;
 460 #endif
 461
 462 #ifdef USE_GTK
 463   /* The widget of this screen.  This is the window of a top widget.  */
 464   GtkWidget *widget;
 465   /* The widget of the edit portion of this screen; the window in
 466      "window_desc" is inside of this.  */
 467   GtkWidget *edit_widget;
 468   /* The widget used for laying out widgets vertically.  */
 469   GtkWidget *vbox_widget;
 470   /* The widget used for laying out widgets horizontally.  */
 471   GtkWidget *hbox_widget;
 472   /* The menubar in this frame.  */
 473   GtkWidget *menubar_widget;
 474   /* The tool bar in this frame  */
 475   GtkWidget *toolbar_widget;
 476   /* The handle box that makes the tool bar detachable.  */
 477   GtkWidget *handlebox_widget;
 478   /* Non-zero if the tool bar is detached.  */
 479   int toolbar_detached;
 480   /* Non-zero if tool bar is packed into the hbox widget (i.e. vertical).  */
 481   int toolbar_in_hbox;
 482
 483   /* The last size hints set.  */
 484   GdkGeometry size_hints;
 485   long hint_flags;
 486
 487 #ifdef USE_GTK_TOOLTIP
 488   GtkTooltip *ttip_widget;
 489   GtkWidget *ttip_lbl;
 490   GtkWindow *ttip_window;
 491 #endif /* USE_GTK_TOOLTIP */
 492
 493 #endif /* USE_GTK */
 494
 495   /* If >=0, a bitmap index.  The indicated bitmap is used for the
 496      icon. */
 497   ptrdiff_t icon_bitmap;
 498
 499   /* Default ASCII font of this frame.  */
 500   struct font *font;
 501
 502   /* The baseline offset of the default ASCII font.  */
 503   int baseline_offset;
 504
 505   /* If a fontset is specified for this frame instead of font, this
 506      value contains an ID of the fontset, else -1.  */
 507   int fontset;
 508
 509   /* Pixel values used for various purposes.
 510      border_pixel may be -1 meaning use a gray tile.  */
 511 #if 0 /* These are also defined in struct frame.  Use that instead.  */
 512   unsigned long background_pixel;
 513   unsigned long foreground_pixel;
 514 #endif
 515   unsigned long cursor_pixel;
 516   unsigned long border_pixel;
 517   unsigned long mouse_pixel;
 518   unsigned long cursor_foreground_pixel;
 519
 520   /* Foreground color for scroll bars.  A value of -1 means use the
 521      default (black for non-toolkit scroll bars).  */
 522   unsigned long scroll_bar_foreground_pixel;
 523
 524   /* Background color for scroll bars.  A value of -1 means use the
 525      default (background color of the frame for non-toolkit scroll
 526      bars).  */
 527   unsigned long scroll_bar_background_pixel;
 528
 529   /* Top and bottom shadow colors for 3d toolkit scrollbars.  -1 means
 530      let the scroll compute them itself.  */
 531   unsigned long scroll_bar_top_shadow_pixel;
 532   unsigned long scroll_bar_bottom_shadow_pixel;
 533
 534   /* Descriptor for the cursor in use for this window.  */
 535   Cursor text_cursor;
 536   Cursor nontext_cursor;
 537   Cursor modeline_cursor;
 538   Cursor hand_cursor;
 539   Cursor hourglass_cursor;
 540   Cursor horizontal_drag_cursor;
 541   Cursor current_cursor;
 542
 543   /* Window whose cursor is hourglass_cursor.  This window is temporarily
 544      mapped to display an hourglass cursor.  */
 545   Window hourglass_window;
 546
 547   /* Non-zero means hourglass cursor is currently displayed.  */
 548   unsigned hourglass_p : 1;
 549
 550   /* These are the current window manager hints.  It seems that
 551      XSetWMHints, when presented with an unset bit in the `flags'
 552      member of the hints structure, does not leave the corresponding
 553      attribute unchanged; rather, it resets that attribute to its
 554      default value.  For example, unless you set the `icon_pixmap'
 555      field and the `IconPixmapHint' bit, XSetWMHints will forget what
 556      your icon pixmap was.  This is rather troublesome, since some of
 557      the members (for example, `input' and `icon_pixmap') want to stay
 558      the same throughout the execution of Emacs.  So, we keep this
 559      structure around, just leaving values in it and adding new bits
 560      to the mask as we go.  */
 561   XWMHints wm_hints;
 562
 563   /* This is the Emacs structure for the X display this frame is on.  */
 564   struct x_display_info *display_info;
 565
 566   /* This is a button event that wants to activate the menubar.
 567      We save it here until the command loop gets to think about it.  */
 568   XEvent *saved_menu_event;
 569
 570   /* This is the widget id used for this frame's menubar in lwlib.  */
 571 #ifdef USE_X_TOOLKIT
 572   int id;
 573 #endif
 574
 575   /* Nonzero means our parent is another application's window
 576      and was explicitly specified.  */
 577   char explicit_parent;
 578
 579   /* Nonzero means tried already to make this frame visible.  */
 580   char asked_for_visible;
 581
 582   /* Nonzero if this frame was ever previously visible.  */
 583   char has_been_visible;
 584
 585 #ifdef HAVE_X_I18N
 586   /* Input context (currently, this means Compose key handler setup).  */
 587   XIC xic;
 588   XIMStyle xic_style;
 589   XFontSet xic_xfs;
 590   char *xic_base_fontname;
 591 #endif
 592
 593   /* Relief GCs, colors etc.  */
 594   struct relief
 595   {
 596     GC gc;
 597     unsigned long pixel;
 598     int allocated_p;
 599   }
 600   black_relief, white_relief;
 601
 602   /* The background for which the above relief GCs were set up.
 603      They are changed only when a different background is involved.  */
 604   unsigned long relief_background;
 605
 606   /* Xt waits for a ConfigureNotify event from the window manager in
 607      EmacsFrameSetCharSize when the shell widget is resized.  For some
 608      window managers like fvwm2 2.2.5 and KDE 2.1 this event doesn't
 609      arrive for an unknown reason and Emacs hangs in Xt.  If this is
 610      zero, tell Xt not to wait.  */
 611   int wait_for_wm;
 612
 613   /* As x_pixels_diff, but to FRAME_OUTER_WINDOW.  For some reason the
 614      two might differ by a pixel, depending on WM */
 615   int x_pixels_outer_diff;
 616
 617   /* As y_pixels_diff, but to FRAME_OUTER_WINDOW.  In the toolkit version,
 618      these may differ because this does not take into account possible
 619      menubar.  y_pixels_diff is with menubar height included */
 620   int y_pixels_outer_diff;
 621
 622   /* Keep track of focus.  May be EXPLICIT if we received a FocusIn for this
 623      frame, or IMPLICIT if we received an EnterNotify.
 624      FocusOut and LeaveNotify clears EXPLICIT/IMPLICIT. */
 625   int focus_state;
 626
 627   /* The offset we need to add to compensate for type A WMs.  */
 628   int move_offset_top;
 629   int move_offset_left;
 630
 631   /* The frame's left/top offsets before we call XMoveWindow.  See
 632      x_check_expected_move.  */
 633   int left_before_move;
 634   int top_before_move;
 635
 636   /* Non-zero if _NET_WM_STATE_HIDDEN is set for this frame.  */
 637   int net_wm_state_hidden_seen;
 638 };
 639
 640 #define No_Cursor (None)
 641
 642 enum
 643 {
 644   /* Values for focus_state, used as bit mask.
 645      EXPLICIT means we received a FocusIn for the frame and know it has
 646      the focus.  IMPLICIT means we received an EnterNotify and the frame
 647      may have the focus if no window manager is running.
 648      FocusOut and LeaveNotify clears EXPLICIT/IMPLICIT. */
 649   FOCUS_NONE     = 0,
 650   FOCUS_IMPLICIT = 1,
 651   FOCUS_EXPLICIT = 2
 652 };
 653
 654
 655 /* Return the X output data for frame F.  */
 656 #define FRAME_X_OUTPUT(f) ((f)->output_data.x)
 657
 658 /* Return the X window used for displaying data in frame F.  */
 659 #define FRAME_X_WINDOW(f) ((f)->output_data.x->window_desc)
 660
 661 /* Return the outermost X window associated with the frame F.  */
 662 #ifdef USE_X_TOOLKIT
 663 #define FRAME_OUTER_WINDOW(f) ((f)->output_data.x->widget ?             \
 664                                XtWindow ((f)->output_data.x->widget) :  \
 665                                FRAME_X_WINDOW (f))
 666 #else
 667 #ifdef USE_GTK
 668 /* Functions not present in older Gtk+ */
 669
 670 #ifndef HAVE_GTK_WIDGET_GET_WINDOW
 671 #define gtk_widget_get_window(w) ((w)->window)
 672 #endif
 673 #ifndef HAVE_GTK_WIDGET_GET_MAPPED
 674 #define gtk_widget_get_mapped(w) (GTK_WIDGET_MAPPED (w))
 675 #endif
 676 #ifndef HAVE_GTK_ADJUSTMENT_GET_PAGE_SIZE
 677 #define gtk_adjustment_get_page_size(w) ((w)->page_size)
 678 #define gtk_adjustment_get_upper(w) ((w)->upper)
 679 #endif
 680
 681 #ifdef HAVE_GTK3
 682 #define DEFAULT_GDK_DISPLAY() \
 683   gdk_x11_display_get_xdisplay (gdk_display_get_default ())
 684 #else
 685 #undef GDK_WINDOW_XID
 686 #define GDK_WINDOW_XID(w) GDK_WINDOW_XWINDOW (w)
 687 #define DEFAULT_GDK_DISPLAY() GDK_DISPLAY ()
 688 #define gtk_widget_get_preferred_size(a, ign, b) \
 689   gtk_widget_size_request (a, b)
 690 #endif
 691
 692 #define GTK_WIDGET_TO_X_WIN(w) \
 693   ((w) && gtk_widget_get_window (w) \
 694    ? GDK_WINDOW_XID (gtk_widget_get_window (w)) : 0)
 695
 696 #define FRAME_GTK_OUTER_WIDGET(f) ((f)->output_data.x->widget)
 697 #define FRAME_GTK_WIDGET(f) ((f)->output_data.x->edit_widget)
 698 #define FRAME_OUTER_WINDOW(f)                                   \
 699        (FRAME_GTK_OUTER_WIDGET (f) ?                            \
 700         GTK_WIDGET_TO_X_WIN (FRAME_GTK_OUTER_WIDGET (f)) :      \
 701          FRAME_X_WINDOW (f))
 702
 703 #else /* !USE_GTK */
 704 #define FRAME_OUTER_WINDOW(f) (FRAME_X_WINDOW (f))
 705 #endif /* !USE_GTK */
 706 #endif
 707
 708
 709 #define FRAME_FONT(f) ((f)->output_data.x->font)
 710 #define FRAME_FONTSET(f) ((f)->output_data.x->fontset)
 711 #define FRAME_MENUBAR_HEIGHT(f) ((f)->output_data.x->menubar_height)
 712 #define FRAME_TOOLBAR_TOP_HEIGHT(f) ((f)->output_data.x->toolbar_top_height)
 713 #define FRAME_TOOLBAR_BOTTOM_HEIGHT(f) \
 714   ((f)->output_data.x->toolbar_bottom_height)
 715 #define FRAME_TOOLBAR_HEIGHT(f) \
 716   (FRAME_TOOLBAR_TOP_HEIGHT (f) + FRAME_TOOLBAR_BOTTOM_HEIGHT (f))
 717 #define FRAME_TOOLBAR_LEFT_WIDTH(f) ((f)->output_data.x->toolbar_left_width)
 718 #define FRAME_TOOLBAR_RIGHT_WIDTH(f) ((f)->output_data.x->toolbar_right_width)
 719 #define FRAME_TOOLBAR_WIDTH(f) \
 720   (FRAME_TOOLBAR_LEFT_WIDTH (f) + FRAME_TOOLBAR_RIGHT_WIDTH (f))
 721 #define FRAME_BASELINE_OFFSET(f) ((f)->output_data.x->baseline_offset)
 722
 723 /* This gives the x_display_info structure for the display F is on.  */
 724 #define FRAME_X_DISPLAY_INFO(f) ((f)->output_data.x->display_info)
 725
 726 /* This is the `Display *' which frame F is on.  */
 727 #define FRAME_X_DISPLAY(f) (FRAME_X_DISPLAY_INFO (f)->display)
 728
 729 /* This is the `Screen *' which frame F is on.  */
 730 #define FRAME_X_SCREEN(f) (FRAME_X_DISPLAY_INFO (f)->screen)
 731 #define FRAME_X_SCREEN_NUMBER(f) XScreenNumberOfScreen (FRAME_X_SCREEN (f))
 732
 733 /* This is the Visual which frame F is on.  */
 734 #define FRAME_X_VISUAL(f) FRAME_X_DISPLAY_INFO (f)->visual
 735
 736 /* This is the Colormap which frame F uses.  */
 737 #define FRAME_X_COLORMAP(f) FRAME_X_DISPLAY_INFO (f)->cmap
 738
 739 /* The difference in pixels between the top left corner of the
 740    Emacs window (including possible window manager decorations)
 741    and FRAME_X_WINDOW (f).  */
 742 #define FRAME_OUTER_TO_INNER_DIFF_X(f) \
 743      ((f)->output_data.x->x_pixels_outer_diff)
 744 #define FRAME_OUTER_TO_INNER_DIFF_Y(f)          \
 745      ((f)->output_data.x->y_pixels_outer_diff   \
 746       + FRAME_MENUBAR_HEIGHT (f) + FRAME_TOOLBAR_HEIGHT (f))
 747
 748
 749 #define FRAME_XIC(f) ((f)->output_data.x->xic)
 750 #define FRAME_X_XIM(f) (FRAME_X_DISPLAY_INFO (f)->xim)
 751 #define FRAME_X_XIM_STYLES(f) (FRAME_X_DISPLAY_INFO (f)->xim_styles)
 752 #define FRAME_XIC_STYLE(f) ((f)->output_data.x->xic_style)
 753 #define FRAME_XIC_FONTSET(f) ((f)->output_data.x->xic_xfs)
 754 #define FRAME_XIC_BASE_FONTNAME(f) ((f)->output_data.x->xic_base_fontname)
 755
 756 /* Value is the smallest width of any character in any font on frame F.  */
 757
 758 #define FRAME_SMALLEST_CHAR_WIDTH(F) \
 759      FRAME_X_DISPLAY_INFO(F)->smallest_char_width
 760
 761 /* Value is the smallest height of any font on frame F.  */
 762
 763 #define FRAME_SMALLEST_FONT_HEIGHT(F) \
 764      FRAME_X_DISPLAY_INFO(F)->smallest_font_height
 765 \f
 766 /* X-specific scroll bar stuff.  */
 767
 768 /* We represent scroll bars as lisp vectors.  This allows us to place
 769    references to them in windows without worrying about whether we'll
 770    end up with windows referring to dead scroll bars; the garbage
 771    collector will free it when its time comes.
 772
 773    We use struct scroll_bar as a template for accessing fields of the
 774    vector.  */
 775
 776 struct scroll_bar
 777 {
 778   /* These fields are shared by all vectors.  */
 779   struct vectorlike_header header;
 780
 781   /* The window we're a scroll bar for.  */
 782   Lisp_Object window;
 783
 784   /* The next and previous in the chain of scroll bars in this frame.  */
 785   Lisp_Object next, prev;
 786
 787   /* Fields from `x_window' down will not be traced by the GC.  */
 788
 789   /* The X window representing this scroll bar.  */
 790   Window x_window;
 791
 792   /* The position and size of the scroll bar in pixels, relative to the
 793      frame.  */
 794   int top, left, width, height;
 795
 796   /* The starting and ending positions of the handle, relative to the
 797      handle area (i.e. zero is the top position, not
 798      SCROLL_BAR_TOP_BORDER).  If they're equal, that means the handle
 799      hasn't been drawn yet.
 800
 801      These are not actually the locations where the beginning and end
 802      are drawn; in order to keep handles from becoming invisible when
 803      editing large files, we establish a minimum height by always
 804      drawing handle bottoms VERTICAL_SCROLL_BAR_MIN_HANDLE pixels below
 805      where they would be normally; the bottom and top are in a
 806      different co-ordinate system.  */
 807   int start, end;
 808
 809   /* If the scroll bar handle is currently being dragged by the user,
 810      this is the number of pixels from the top of the handle to the
 811      place where the user grabbed it.  If the handle isn't currently
 812      being dragged, this is Qnil.  */
 813   Lisp_Object dragging;
 814
 815   /* 1 if the background of the fringe that is adjacent to a scroll
 816      bar is extended to the gap between the fringe and the bar.  */
 817   unsigned int fringe_extended_p : 1;
 818 };
 819
 820 /* Turning a lisp vector value into a pointer to a struct scroll_bar.  */
 821 #define XSCROLL_BAR(vec) ((struct scroll_bar *) XVECTOR (vec))
 822
 823
 824 /* Extract the X widget of the scroll bar from a struct scroll_bar.
 825    XtWindowToWidget should be fast enough since Xt uses a hash table
 826    to map windows to widgets.  */
 827
 828 #define SCROLL_BAR_X_WIDGET(dpy, ptr) \
 829   XtWindowToWidget (dpy, ptr->x_window)
 830
 831 /* Store a widget id in a struct scroll_bar.  */
 832
 833 #define SET_SCROLL_BAR_X_WIDGET(ptr, w)         \
 834   do {                                          \
 835     Window window = XtWindow (w);               \
 836     ptr->x_window = window;                     \
 837 } while (0)
 838
 839
 840 /* Return the inside width of a vertical scroll bar, given the outside
 841    width.  */
 842 #define VERTICAL_SCROLL_BAR_INSIDE_WIDTH(f, width) \
 843   ((width) \
 844    - VERTICAL_SCROLL_BAR_LEFT_BORDER \
 845    - VERTICAL_SCROLL_BAR_RIGHT_BORDER \
 846    - VERTICAL_SCROLL_BAR_WIDTH_TRIM * 2)
 847
 848 /* Return the length of the rectangle within which the top of the
 849    handle must stay.  This isn't equivalent to the inside height,
 850    because the scroll bar handle has a minimum height.
 851
 852    This is the real range of motion for the scroll bar, so when we're
 853    scaling buffer positions to scroll bar positions, we use this, not
 854    VERTICAL_SCROLL_BAR_INSIDE_HEIGHT.  */
 855 #define VERTICAL_SCROLL_BAR_TOP_RANGE(f, height) \
 856   (VERTICAL_SCROLL_BAR_INSIDE_HEIGHT (f, height) - VERTICAL_SCROLL_BAR_MIN_HANDLE)
 857
 858 /* Return the inside height of vertical scroll bar, given the outside
 859    height.  See VERTICAL_SCROLL_BAR_TOP_RANGE too.  */
 860 #define VERTICAL_SCROLL_BAR_INSIDE_HEIGHT(f, height) \
 861   ((height) - VERTICAL_SCROLL_BAR_TOP_BORDER - VERTICAL_SCROLL_BAR_BOTTOM_BORDER)
 862
 863
 864 /* Border widths for scroll bars.
 865
 866    Scroll bar windows don't have any X borders; their border width is
 867    set to zero, and we redraw borders ourselves.  This makes the code
 868    a bit cleaner, since we don't have to convert between outside width
 869    (used when relating to the rest of the screen) and inside width
 870    (used when sizing and drawing the scroll bar window itself).
 871
 872    The handle moves up and down/back and forth in a rectangle inset
 873    from the edges of the scroll bar.  These are widths by which we
 874    inset the handle boundaries from the scroll bar edges.  */
 875 #define VERTICAL_SCROLL_BAR_LEFT_BORDER (2)
 876 #define VERTICAL_SCROLL_BAR_RIGHT_BORDER (2)
 877 #define VERTICAL_SCROLL_BAR_TOP_BORDER (2)
 878 #define VERTICAL_SCROLL_BAR_BOTTOM_BORDER (2)
 879
 880 /* Minimum lengths for scroll bar handles, in pixels.  */
 881 #define VERTICAL_SCROLL_BAR_MIN_HANDLE (5)
 882
 883 /* Trimming off a few pixels from each side prevents
 884    text from glomming up against the scroll bar */
 885 #define VERTICAL_SCROLL_BAR_WIDTH_TRIM (0)
 886
 887 \f
 888 /* If a struct input_event has a kind which is SELECTION_REQUEST_EVENT
 889    or SELECTION_CLEAR_EVENT, then its contents are really described
 890    by this structure.  */
 891
 892 /* For an event of kind SELECTION_REQUEST_EVENT,
 893    this structure really describes the contents.
 894    **Don't make this struct longer!**
 895    If it overlaps the frame_or_window field of struct input_event,
 896    that will cause GC to crash.  */
 897 struct selection_input_event
 898 {
 899   int kind;
 900   Display *display;
 901   /* We spell it with an "o" here because X does.  */
 902   Window requestor;
 903   Atom selection, target, property;
 904   Time time;
 905 };
 906
 907 #define SELECTION_EVENT_DISPLAY(eventp) \
 908   (((struct selection_input_event *) (eventp))->display)
 909 /* We spell it with an "o" here because X does.  */
 910 #define SELECTION_EVENT_REQUESTOR(eventp)       \
 911   (((struct selection_input_event *) (eventp))->requestor)
 912 #define SELECTION_EVENT_SELECTION(eventp)       \
 913   (((struct selection_input_event *) (eventp))->selection)
 914 #define SELECTION_EVENT_TARGET(eventp)  \
 915   (((struct selection_input_event *) (eventp))->target)
 916 #define SELECTION_EVENT_PROPERTY(eventp)        \
 917   (((struct selection_input_event *) (eventp))->property)
 918 #define SELECTION_EVENT_TIME(eventp)    \
 919   (((struct selection_input_event *) (eventp))->time)
 920
 921 \f
 922 struct window;
 923 struct glyph_matrix;
 924 struct frame;
 925 struct input_event;
 926 struct face;
 927 struct image;
 928
 929 /* From xselect.c.  */
 930
 931 void x_handle_selection_notify (XSelectionEvent *);
 932 void x_handle_property_notify (XPropertyEvent *);
 933
 934 /* From xfns.c.  */
 935
 936 struct frame *check_x_frame (Lisp_Object);
 937 extern void x_free_gcs (struct frame *);
 938
 939 /* From xrdb.c.  */
 940
 941 XrmDatabase x_load_resources (Display *, const char *, const char *,
 942                               const char *);
 943
 944 /* Defined in xterm.c */
 945
 946 extern int x_text_icon (struct frame *, const char *);
 947 extern void x_catch_errors (Display *);
 948 extern void x_check_errors (Display *, const char *)
 949   ATTRIBUTE_FORMAT_PRINTF (2, 0);
 950 extern int x_had_errors_p (Display *);
 951 extern void x_uncatch_errors (void);
 952 extern void x_clear_errors (Display *);
 953 extern void x_set_window_size (struct frame *, int, int, int);
 954 extern void x_set_mouse_position (struct frame *, int, int);
 955 extern void x_set_mouse_pixel_position (struct frame *, int, int);
 956 extern void xembed_request_focus (struct frame *);
 957 extern void x_ewmh_activate_frame (struct frame *);
 958 extern void x_delete_terminal (struct terminal *terminal);
 959 extern unsigned long x_copy_color (struct frame *, unsigned long);
 960 #ifdef USE_X_TOOLKIT
 961 extern XtAppContext Xt_app_con;
 962 extern void x_activate_timeout_atimer (void);
 963 #endif
 964 #ifdef USE_LUCID
 965 extern bool x_alloc_lighter_color_for_widget (Widget, Display *, Colormap,
 966                                               unsigned long *,
 967                                               double, int);
 968 #endif
 969 extern bool x_alloc_nearest_color (struct frame *, Colormap, XColor *);
 970 extern void x_query_color (struct frame *f, XColor *);
 971 extern void x_clear_area (Display *, Window, int, int, int, int, int);
 972 #if defined HAVE_MENUS && !defined USE_X_TOOLKIT && !defined USE_GTK
 973 extern void x_mouse_leave (struct x_display_info *);
 974 #endif
 975
 976 #ifdef USE_X_TOOLKIT
 977 extern int x_dispatch_event (XEvent *, Display *);
 978 #endif
 979 extern int x_x_to_emacs_modifiers (struct x_display_info *, int);
 980 extern int x_display_pixel_height (struct x_display_info *);
 981 extern int x_display_pixel_width (struct x_display_info *);
 982
 983 extern void x_set_sticky (struct frame *, Lisp_Object, Lisp_Object);
 984 extern void x_wait_for_event (struct frame *, int);
 985
 986 /* Defined in xselect.c */
 987
 988 extern void x_handle_property_notify (XPropertyEvent *);
 989 extern void x_handle_selection_notify (XSelectionEvent *);
 990 extern void x_handle_selection_event (struct input_event *);
 991 extern void x_clear_frame_selections (struct frame *);
 992
 993 extern void x_send_client_event (Lisp_Object display,
 994                                  Lisp_Object dest,
 995                                  Lisp_Object from,
 996                                  Atom message_type,
 997                                  Lisp_Object format,
 998                                  Lisp_Object values);
 999
1000 extern int x_handle_dnd_message (struct frame *,
1001                                  XClientMessageEvent *,
1002                                  struct x_display_info *,
1003                                  struct input_event *bufp);
1004 extern int x_check_property_data (Lisp_Object);
1005 extern void x_fill_property_data (Display *,
1006                                   Lisp_Object,
1007                                   void *,
1008                                   int);
1009 extern Lisp_Object x_property_data_to_lisp (struct frame *,
1010                                             const unsigned char *,
1011                                             Atom,
1012                                             int,
1013                                             unsigned long);
1014 extern void x_clipboard_manager_save_frame (Lisp_Object);
1015 extern void x_clipboard_manager_save_all (void);
1016
1017 /* Defined in xfns.c */
1018
1019 extern struct x_display_info * check_x_display_info (Lisp_Object);
1020 extern Lisp_Object x_get_focus_frame (struct frame *);
1021 extern int x_in_use;
1022
1023 #ifdef USE_GTK
1024 extern int xg_set_icon (struct frame *, Lisp_Object);
1025 extern int xg_set_icon_from_xpm_data (struct frame *, const char**);
1026 #endif /* USE_GTK */
1027
1028 extern void x_implicitly_set_name (struct frame *, Lisp_Object, Lisp_Object);
1029 extern void xic_free_xfontset (struct frame *);
1030 extern void create_frame_xic (struct frame *);
1031 extern void destroy_frame_xic (struct frame *);
1032 extern void xic_set_preeditarea (struct window *, int, int);
1033 extern void xic_set_statusarea (struct frame *);
1034 extern void xic_set_xfontset (struct frame *, const char *);
1035 extern int x_pixel_width (struct frame *);
1036 extern int x_pixel_height (struct frame *);
1037 extern bool x_defined_color (struct frame *, const char *, XColor *, bool);
1038 #ifdef HAVE_X_I18N
1039 extern void free_frame_xic (struct frame *);
1040 # if defined HAVE_X_WINDOWS && defined USE_X_TOOLKIT
1041 extern char * xic_create_fontsetname (const char *base_fontname, int motif);
1042 # endif
1043 #endif
1044
1045 /* Defined in xfaces.c */
1046
1047 #ifdef USE_X_TOOLKIT
1048 extern void x_free_dpy_colors (Display *, Screen *, Colormap,
1049                                unsigned long *, int);
1050 #endif /* USE_X_TOOLKIT */
1051
1052 /* Defined in xmenu.c */
1053
1054 #if defined USE_GTK || defined USE_MOTIF
1055 extern void x_menu_set_in_use (int);
1056 #endif
1057 #ifdef USE_MOTIF
1058 extern void x_menu_wait_for_event (void *data);
1059 #endif
1060 extern int popup_activated (void);
1061 extern void initialize_frame_menubar (struct frame *);
1062
1063 /* Defined in widget.c */
1064
1065 #ifdef USE_X_TOOLKIT
1066 extern void widget_store_internal_border (Widget);
1067 #endif
1068
1069 /* Defined in xsmfns.c */
1070 #ifdef HAVE_X_SM
1071 extern void x_session_initialize (struct x_display_info *dpyinfo);
1072 extern int x_session_have_connection (void);
1073 extern void x_session_close (void);
1074 #endif
1075
1076 /* Defined in xterm.c */
1077
1078 extern Lisp_Object Qx_gtk_map_stock;
1079
1080 /* Is the frame embedded into another application? */
1081
1082 #define FRAME_X_EMBEDDED_P(f) (FRAME_X_OUTPUT(f)->explicit_parent != 0)
1083
1084
1085 #define FONT_TYPE_FOR_UNIBYTE(font, ch) 0
1086 #define FONT_TYPE_FOR_MULTIBYTE(font, ch) 0
1087
1088 #define STORE_XCHAR2B(chp, b1, b2) \
1089   ((chp)->byte1 = (b1), (chp)->byte2 = (b2))
1090
1091 #define XCHAR2B_BYTE1(chp) \
1092   ((chp)->byte1)
1093
1094 #define XCHAR2B_BYTE2(chp) \
1095   ((chp)->byte2)
1096
1097
1098 #define STORE_NATIVE_RECT(nr,rx,ry,rwidth,rheight)      \
1099   ((nr).x = (rx),                                       \
1100    (nr).y = (ry),                                       \
1101    (nr).width = (rwidth),                               \
1102    (nr).height = (rheight))
1103
1104 #endif /* XTERM_H */