src/w32term.h

   1 /* Definitions and headers for communication on the Microsoft W32 API.
   2    Copyright (C) 1995 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 2, or (at your option)
   9 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; see the file COPYING.  If not, write to
  18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  19 Boston, MA 02111-1307, USA.  */
  20
  21 /* Added by Kevin Gallo */
  22
  23 #include <w32gui.h>
  24
  25 /* The class of this X application.  */
  26 #define EMACS_CLASS "Emacs"
  27 \f
  28 #define BLACK_PIX_DEFAULT(f) PALETTERGB(0,0,0)
  29 #define WHITE_PIX_DEFAULT(f) PALETTERGB(255,255,255)
  30
  31 #define FONT_WIDTH(f)   ((f)->tm.tmAveCharWidth)
  32 #define FONT_HEIGHT(f)  ((f)->tm.tmHeight)
  33 #define FONT_BASE(f)    ((f)->tm.tmAscent)
  34 #define FONT_MAX_WIDTH(f) ((f)->tm.tmMaxCharWidth)
  35
  36 #define CHECK_W32_FRAME(f, frame)               \
  37   if (NILP (frame))                             \
  38     f = selected_frame;                         \
  39   else                                          \
  40     {                                           \
  41       CHECK_LIVE_FRAME (frame, 0);              \
  42       f = XFRAME (frame);                       \
  43     }                                           \
  44   if (! FRAME_W32_P (f))
  45
  46 /* Indicates whether we are in the readsocket call and the message we
  47    are processing in the current loop */
  48
  49 extern MSG CurMsg;
  50 extern BOOL bUseDflt;
  51
  52 extern struct frame *x_window_to_frame ();
  53
  54 enum text_cursor_kinds {
  55   filled_box_cursor, hollow_box_cursor, bar_cursor
  56 };
  57
  58 /* Structure recording bitmaps and reference count.
  59    If REFCOUNT is 0 then this record is free to be reused.  */
  60
  61 struct w32_bitmap_record
  62 {
  63   Pixmap pixmap;
  64   char *file;
  65   HINSTANCE hinst; /* Used to load the file */
  66   int refcount;
  67   /* Record some info about this pixmap.  */
  68   int height, width, depth;
  69 };
  70
  71 /* Palette book-keeping stuff for mapping requested colors into the
  72    system palette.  Keep a ref-counted list of requested colors and
  73    regenerate the app palette whenever the requested list changes. */
  74
  75 extern Lisp_Object Vw32_enable_palette;
  76
  77 struct w32_palette_entry {
  78   struct w32_palette_entry * next;
  79   PALETTEENTRY entry;
  80 #if 0
  81   unsigned refcount;
  82 #endif
  83 };
  84
  85 extern void w32_regenerate_palette(struct frame *f);
  86
  87 \f
  88 /* For each display (currently only one on w32), we have a structure that
  89    records information about it.  */
  90
  91 struct w32_display_info
  92 {
  93   /* Chain of all w32_display_info structures.  */
  94   struct w32_display_info *next;
  95   /* This is a cons cell of the form (NAME . FONT-LIST-CACHE).
  96      The same cons cell also appears in x_display_name_list.  */
  97   Lisp_Object name_list_element;
  98   /* Number of frames that are on this display.  */
  99   int reference_count;
 100   /* Number of planes on this screen.  */
 101   int n_planes;
 102   /* Number of bits per pixel on this screen.  */
 103   int n_cbits;
 104   /* Dimensions of this screen.  */
 105   int height, width;
 106   int height_in,width_in;
 107   /* Mask of things that cause the mouse to be grabbed.  */
 108   int grabbed;
 109   /* The root window of this screen.  */
 110   Window root_window;
 111   /* The cursor to use for vertical scroll bars.  */
 112   Cursor vertical_scroll_bar_cursor;
 113
 114   /* color palette information.  */
 115   int has_palette;
 116   struct w32_palette_entry * color_list;
 117   unsigned num_colors;
 118   HPALETTE palette;
 119
 120   /* deferred action flags checked when starting frame update.  */
 121   int regen_palette;
 122
 123   /* Keystroke that has been faked by Emacs and will be ignored when
 124      received; value is reset after key is received.  */
 125   int faked_key;
 126
 127   /* A table of all the fonts we have already loaded.  */
 128   struct font_info *font_table;
 129
 130   /* The current capacity of font_table.  */
 131   int font_table_size;
 132
 133   /* These variables describe the range of text currently shown
 134      in its mouse-face, together with the window they apply to.
 135      As long as the mouse stays within this range, we need not
 136      redraw anything on its account.  */
 137   int mouse_face_beg_row, mouse_face_beg_col;
 138   int mouse_face_end_row, mouse_face_end_col;
 139   int mouse_face_past_end;
 140   Lisp_Object mouse_face_window;
 141   int mouse_face_face_id;
 142
 143   /* 1 if a mouse motion event came and we didn't handle it right away because
 144      gc was in progress.  */
 145   int mouse_face_deferred_gc;
 146
 147   /* FRAME and X, Y position of mouse when last checked for
 148      highlighting.  X and Y can be negative or out of range for the frame.  */
 149   struct frame *mouse_face_mouse_frame;
 150   int mouse_face_mouse_x, mouse_face_mouse_y;
 151
 152   /* Nonzero means defer mouse-motion highlighting.  */
 153   int mouse_face_defer;
 154
 155   char *w32_id_name;
 156
 157   /* The number of fonts actually stored in w32_font_table.
 158      font_table[n] is used and valid iff 0 <= n < n_fonts.
 159      0 <= n_fonts <= font_table_size.  */
 160   int n_fonts;
 161
 162   /* Pointer to bitmap records.  */
 163   struct w32_bitmap_record *bitmaps;
 164
 165   /* Allocated size of bitmaps field.  */
 166   int bitmaps_size;
 167
 168   /* Last used bitmap index.  */
 169   int bitmaps_last;
 170
 171   /* The frame (if any) which has the window that has keyboard focus.
 172      Zero if none.  This is examined by Ffocus_frame in w32fns.c.  Note
 173      that a mere EnterNotify event can set this; if you need to know the
 174      last frame specified in a FocusIn or FocusOut event, use
 175      w32_focus_event_frame.  */
 176   struct frame *w32_focus_frame;
 177
 178   /* The last frame mentioned in a FocusIn or FocusOut event.  This is
 179      separate from w32_focus_frame, because whether or not LeaveNotify
 180      events cause us to lose focus depends on whether or not we have
 181      received a FocusIn event for it.  */
 182   struct frame *w32_focus_event_frame;
 183
 184   /* The frame which currently has the visual highlight, and should get
 185      keyboard input (other sorts of input have the frame encoded in the
 186      event).  It points to the focus frame's selected window's
 187      frame.  It differs from w32_focus_frame when we're using a global
 188      minibuffer.  */
 189   struct frame *w32_highlight_frame;
 190 };
 191
 192 /* This is a chain of structures for all the displays currently in use.  */
 193 extern struct w32_display_info one_w32_display_info;
 194
 195 /* This is a list of cons cells, each of the form (NAME . FONT-LIST-CACHE),
 196    one for each element of w32_display_list and in the same order.
 197    NAME is the name of the frame.
 198    FONT-LIST-CACHE records previous values returned by x-list-fonts.  */
 199 extern Lisp_Object w32_display_name_list;
 200
 201 /* Regexp matching a font name whose width is the same as `PIXEL_SIZE'.  */
 202 extern Lisp_Object Vx_pixel_size_width_font_regexp;
 203
 204 /* A flag to control how to display unibyte 8-bit character.  */
 205 extern int unibyte_display_via_language_environment;
 206
 207 extern struct w32_display_info *x_display_info_for_display ();
 208 extern struct w32_display_info *x_display_info_for_name ();
 209
 210 extern struct w32_display_info *w32_term_init ();
 211 \f
 212 extern Lisp_Object w32_list_fonts ();
 213 extern struct font_info *w32_get_font_info (), *w32_query_font ();
 214 extern void w32_find_ccl_program();
 215 \f
 216 /* Each W32 frame object points to its own struct w32_display object
 217    in the output_data.w32 field.  The w32_display structure contains all
 218    the information that is specific to W32 windows.  */
 219
 220 struct w32_output
 221 {
 222   /* Menubar "widget" handle.  */
 223   HMENU menubar_widget;
 224
 225   /* Original palette (used to deselect real palette after drawing) */
 226   HPALETTE old_palette;
 227
 228   /* Position of the W32 window (x and y offsets in root window).  */
 229   int left_pos;
 230   int top_pos;
 231
 232   /* Border width of the W32 window as known by the window system.  */
 233   int border_width;
 234
 235   /* Size of the W32 window in pixels.  */
 236   int pixel_height, pixel_width;
 237
 238   /* Height of a line, in pixels.  */
 239   int line_height;
 240
 241   /* Width of the internal border.  This is a line of background color
 242      just inside the window's border.  When the frame is selected,
 243      a highlighting is displayed inside the internal border.  */
 244   int internal_border_width;
 245
 246   /* The window used for this frame.
 247      May be zero while the frame object is being created
 248      and the window has not yet been created.  */
 249   Window window_desc;
 250
 251   /* The window that is the parent of this window.
 252      Usually this is a window that was made by the window manager,
 253      but it can be the root window, and it can be explicitly specified
 254      (see the explicit_parent field, below).  */
 255   Window parent_desc;
 256
 257   /* Default ASCII font of this frame. */
 258   XFontStruct *font;
 259
 260   /* The baseline position of the default ASCII font.  */
 261   int font_baseline;
 262
 263   /* If a fontset is specified for this frame instead of font, this
 264      value contains an ID of the fontset, else -1.  */
 265   int fontset;
 266
 267   /* Pixel values used for various purposes.
 268      border_pixel may be -1 meaning use a gray tile.  */
 269   unsigned long background_pixel;
 270   unsigned long foreground_pixel;
 271   unsigned long cursor_pixel;
 272   unsigned long border_pixel;
 273   unsigned long mouse_pixel;
 274   unsigned long cursor_foreground_pixel;
 275
 276   /* Descriptor for the cursor in use for this window.  */
 277   Cursor text_cursor;
 278   Cursor nontext_cursor;
 279   Cursor modeline_cursor;
 280   Cursor cross_cursor;
 281
 282   /* Flag to set when the window needs to be completely repainted.  */
 283   int needs_exposure;
 284
 285   /* What kind of text cursor is drawn in this window right now?
 286      (If there is no cursor (phys_cursor_x < 0), then this means nothing.)  */
 287   enum text_cursor_kinds current_cursor;
 288
 289   /* What kind of text cursor should we draw in the future?
 290      This should always be filled_box_cursor or bar_cursor.  */
 291   enum text_cursor_kinds desired_cursor;
 292
 293   /* Width of bar cursor (if we are using that).  */
 294   int cursor_width;
 295
 296   DWORD dwStyle;
 297
 298   /* The size of the extra width currently allotted for vertical
 299      scroll bars, in pixels.  */
 300   int vertical_scroll_bar_extra;
 301
 302   /* Table of parameter faces for this frame.  Any resources (pixel
 303      values, fonts) referred to here have been allocated explicitly
 304      for this face, and should be freed if we change the face.  */
 305   struct face **param_faces;
 306   int n_param_faces;
 307
 308   /* Table of computed faces for this frame.  These are the faces
 309      whose indexes go into the upper bits of a glyph, computed by
 310      combining the parameter faces specified by overlays, text
 311      properties, and what have you.  The resources mentioned here
 312      are all shared with parameter faces.  */
 313   struct face **computed_faces;
 314   int n_computed_faces;         /* How many are valid */
 315   int size_computed_faces;      /* How many are allocated */
 316
 317   /* This is the gravity value for the specified window position.  */
 318   int win_gravity;
 319
 320   /* The geometry flags for this window.  */
 321   int size_hint_flags;
 322
 323   /* This is the Emacs structure for the display this frame is on.  */
 324   /* struct w32_display_info *display_info; */
 325
 326   /* Nonzero means our parent is another application's window
 327      and was explicitly specified.  */
 328   char explicit_parent;
 329
 330   /* Nonzero means tried already to make this frame visible.  */
 331   char asked_for_visible;
 332
 333   /* Nonzero means menubar is currently active.  */
 334   char menubar_active;
 335
 336   /* Nonzero means menubar is about to become active, but should be
 337      brought up to date first.  */
 338   volatile char pending_menu_activation;
 339 };
 340
 341 /* Get at the computed faces of an X window frame.  */
 342 #define FRAME_PARAM_FACES(f) ((f)->output_data.w32->param_faces)
 343 #define FRAME_N_PARAM_FACES(f) ((f)->output_data.w32->n_param_faces)
 344 #define FRAME_DEFAULT_PARAM_FACE(f) (FRAME_PARAM_FACES (f)[0])
 345 #define FRAME_MODE_LINE_PARAM_FACE(f) (FRAME_PARAM_FACES (f)[1])
 346
 347 #define FRAME_COMPUTED_FACES(f) ((f)->output_data.w32->computed_faces)
 348 #define FRAME_N_COMPUTED_FACES(f) ((f)->output_data.w32->n_computed_faces)
 349 #define FRAME_SIZE_COMPUTED_FACES(f) ((f)->output_data.w32->size_computed_faces)
 350 #define FRAME_DEFAULT_FACE(f) ((f)->output_data.w32->computed_faces[0])
 351 #define FRAME_MODE_LINE_FACE(f) ((f)->output_data.w32->computed_faces[1])
 352
 353 /* Return the window associated with the frame F.  */
 354 #define FRAME_W32_WINDOW(f) ((f)->output_data.w32->window_desc)
 355
 356 #define FRAME_FOREGROUND_PIXEL(f) ((f)->output_data.w32->foreground_pixel)
 357 #define FRAME_BACKGROUND_PIXEL(f) ((f)->output_data.w32->background_pixel)
 358 #define FRAME_FONT(f) ((f)->output_data.w32->font)
 359 #define FRAME_FONTSET(f) ((f)->output_data.w32->fontset)
 360 #define FRAME_INTERNAL_BORDER_WIDTH(f) ((f)->output_data.w32->internal_border_width)
 361
 362 /* This gives the w32_display_info structure for the display F is on.  */
 363 #define FRAME_W32_DISPLAY_INFO(f) (&one_w32_display_info)
 364
 365 /* This is the 'font_info *' which frame F has.  */
 366 #define FRAME_W32_FONT_TABLE(f) (FRAME_W32_DISPLAY_INFO (f)->font_table)
 367
 368 /* These two really ought to be called FRAME_PIXEL_{WIDTH,HEIGHT}.  */
 369 #define PIXEL_WIDTH(f) ((f)->output_data.w32->pixel_width)
 370 #define PIXEL_HEIGHT(f) ((f)->output_data.w32->pixel_height)
 371 #define FRAME_LINE_HEIGHT(f) ((f)->output_data.w32->line_height)
 372
 373 #define FRAME_DESIRED_CURSOR(f) ((f)->output_data.w32->desired_cursor)
 374
 375 \f
 376 /* W32-specific scroll bar stuff.  */
 377
 378 /* We represent scroll bars as lisp vectors.  This allows us to place
 379    references to them in windows without worrying about whether we'll
 380    end up with windows referring to dead scroll bars; the garbage
 381    collector will free it when its time comes.
 382
 383    We use struct scroll_bar as a template for accessing fields of the
 384    vector.  */
 385
 386 struct scroll_bar {
 387
 388   /* These fields are shared by all vectors.  */
 389   EMACS_INT size_from_Lisp_Vector_struct;
 390   struct Lisp_Vector *next_from_Lisp_Vector_struct;
 391
 392   /* The window we're a scroll bar for.  */
 393   Lisp_Object window;
 394
 395   /* The next and previous in the chain of scroll bars in this frame.  */
 396   Lisp_Object next, prev;
 397
 398   /* The window representing this scroll bar.  Since this is a full
 399      32-bit quantity, we store it split into two 32-bit values.  */
 400   Lisp_Object w32_window_low, w32_window_high;
 401
 402   /* The position and size of the scroll bar in pixels, relative to the
 403      frame.  */
 404   Lisp_Object top, left, width, height;
 405
 406   /* The starting and ending positions of the handle, relative to the
 407      handle area (i.e. zero is the top position, not
 408      SCROLL_BAR_TOP_BORDER).  If they're equal, that means the handle
 409      hasn't been drawn yet.
 410
 411      These are not actually the locations where the beginning and end
 412      are drawn; in order to keep handles from becoming invisible when
 413      editing large files, we establish a minimum height by always
 414      drawing handle bottoms VERTICAL_SCROLL_BAR_MIN_HANDLE pixels below
 415      where they would be normally; the bottom and top are in a
 416      different co-ordinate system.  */
 417   Lisp_Object start, end;
 418
 419   /* If the scroll bar handle is currently being dragged by the user,
 420      this is the number of pixels from the top of the handle to the
 421      place where the user grabbed it.  If the handle isn't currently
 422      being dragged, this is Qnil.  */
 423   Lisp_Object dragging;
 424 };
 425
 426 /* The number of elements a vector holding a struct scroll_bar needs.  */
 427 #define SCROLL_BAR_VEC_SIZE                                     \
 428   ((sizeof (struct scroll_bar)                                  \
 429     - sizeof (EMACS_INT) - sizeof (struct Lisp_Vector *))       \
 430    / sizeof (Lisp_Object))
 431
 432 /* Turning a lisp vector value into a pointer to a struct scroll_bar.  */
 433 #define XSCROLL_BAR(vec) ((struct scroll_bar *) XVECTOR (vec))
 434
 435
 436 /* Building a 32-bit C integer from two 16-bit lisp integers.  */
 437 #define SCROLL_BAR_PACK(low, high) (XINT (high) << 16 | XINT (low))
 438
 439 /* Setting two lisp integers to the low and high words of a 32-bit C int.  */
 440 #define SCROLL_BAR_UNPACK(low, high, int32) \
 441   (XSETINT ((low),   (int32)        & 0xffff), \
 442    XSETINT ((high), ((int32) >> 16) & 0xffff))
 443
 444
 445 /* Extract the window id of the scroll bar from a struct scroll_bar.  */
 446 #define SCROLL_BAR_W32_WINDOW(ptr) \
 447   ((Window) SCROLL_BAR_PACK ((ptr)->w32_window_low, (ptr)->w32_window_high))
 448
 449 /* Store a window id in a struct scroll_bar.  */
 450 #define SET_SCROLL_BAR_W32_WINDOW(ptr, id) \
 451   (SCROLL_BAR_UNPACK ((ptr)->w32_window_low, (ptr)->w32_window_high, (int) id))
 452
 453
 454 /* Return the outside pixel height for a vertical scroll bar HEIGHT
 455    rows high on frame F.  */
 456 #define VERTICAL_SCROLL_BAR_PIXEL_HEIGHT(f, height) \
 457   ((height) * (f)->output_data.w32->line_height)
 458
 459 /* Return the inside width of a vertical scroll bar, given the outside
 460    width.  */
 461 #define VERTICAL_SCROLL_BAR_INSIDE_WIDTH(width) \
 462   ((width) - VERTICAL_SCROLL_BAR_LEFT_BORDER - VERTICAL_SCROLL_BAR_RIGHT_BORDER)
 463
 464 /* Return the length of the rectangle within which the top of the
 465    handle must stay.  This isn't equivalent to the inside height,
 466    because the scroll bar handle has a minimum height.
 467
 468    This is the real range of motion for the scroll bar, so when we're
 469    scaling buffer positions to scroll bar positions, we use this, not
 470    VERTICAL_SCROLL_BAR_INSIDE_HEIGHT.  */
 471 #define VERTICAL_SCROLL_BAR_TOP_RANGE(height) \
 472   (VERTICAL_SCROLL_BAR_INSIDE_HEIGHT (height) - VERTICAL_SCROLL_BAR_MIN_HANDLE)
 473
 474 /* Return the inside height of vertical scroll bar, given the outside
 475    height.  See VERTICAL_SCROLL_BAR_TOP_RANGE too.  */
 476 #define VERTICAL_SCROLL_BAR_INSIDE_HEIGHT(height) \
 477   ((height) - VERTICAL_SCROLL_BAR_TOP_BORDER - VERTICAL_SCROLL_BAR_BOTTOM_BORDER)
 478
 479
 480 /* Border widths for scroll bars.
 481
 482    Scroll bar windows don't have any borders; their border width is
 483    set to zero, and we redraw borders ourselves.  This makes the code
 484    a bit cleaner, since we don't have to convert between outside width
 485    (used when relating to the rest of the screen) and inside width
 486    (used when sizing and drawing the scroll bar window itself).
 487
 488    The handle moves up and down/back and forth in a rectangle inset
 489    from the edges of the scroll bar.  These are widths by which we
 490    inset the handle boundaries from the scroll bar edges.  */
 491 #define VERTICAL_SCROLL_BAR_LEFT_BORDER (0)
 492 #define VERTICAL_SCROLL_BAR_RIGHT_BORDER (0)
 493 #define VERTICAL_SCROLL_BAR_TOP_BORDER (vertical_scroll_bar_top_border)
 494 #define VERTICAL_SCROLL_BAR_BOTTOM_BORDER (vertical_scroll_bar_bottom_border)
 495
 496 /* Minimum lengths for scroll bar handles, in pixels.  */
 497 #define VERTICAL_SCROLL_BAR_MIN_HANDLE (vertical_scroll_bar_min_handle)
 498
 499
 500 \f
 501 /* Manipulating pixel sizes and character sizes.
 502    Knowledge of which factors affect the overall size of the window should
 503    be hidden in these macros, if that's possible.
 504
 505    Return the upper/left pixel position of the character cell on frame F
 506    at ROW/COL.  */
 507 #define CHAR_TO_PIXEL_ROW(f, row) \
 508   ((f)->output_data.w32->internal_border_width \
 509    + (row) * (f)->output_data.w32->line_height)
 510 #define CHAR_TO_PIXEL_COL(f, col) \
 511   ((f)->output_data.w32->internal_border_width \
 512    + (col) * FONT_WIDTH ((f)->output_data.w32->font))
 513
 514 /* Return the pixel width/height of frame F if it has
 515    WIDTH columns/HEIGHT rows.  */
 516 #define CHAR_TO_PIXEL_WIDTH(f, width) \
 517   (CHAR_TO_PIXEL_COL (f, width) \
 518    + (f)->output_data.w32->vertical_scroll_bar_extra \
 519    + (f)->output_data.w32->internal_border_width)
 520 #define CHAR_TO_PIXEL_HEIGHT(f, height) \
 521   (CHAR_TO_PIXEL_ROW (f, height) \
 522    + (f)->output_data.w32->internal_border_width)
 523
 524
 525 /* Return the row/column (zero-based) of the character cell containing
 526    the pixel on FRAME at ROW/COL.  */
 527 #define PIXEL_TO_CHAR_ROW(f, row) \
 528   (((row) - (f)->output_data.w32->internal_border_width) \
 529    / (f)->output_data.w32->line_height)
 530 #define PIXEL_TO_CHAR_COL(f, col) \
 531   (((col) - (f)->output_data.w32->internal_border_width) \
 532    / FONT_WIDTH ((f)->output_data.w32->font))
 533
 534 /* How many columns/rows of text can we fit in WIDTH/HEIGHT pixels on
 535    frame F?  */
 536 #define PIXEL_TO_CHAR_WIDTH(f, width) \
 537   (PIXEL_TO_CHAR_COL (f, ((width) \
 538                           - (f)->output_data.w32->internal_border_width \
 539                           - (f)->output_data.w32->vertical_scroll_bar_extra)))
 540 #define PIXEL_TO_CHAR_HEIGHT(f, height) \
 541   (PIXEL_TO_CHAR_ROW (f, ((height) \
 542                           - (f)->output_data.w32->internal_border_width)))
 543 \f
 544 /* Interface to the face code functions.  */
 545
 546 /* Create the first two computed faces for a frame -- the ones that
 547    have GC's.  */
 548 extern void init_frame_faces (/* FRAME_PTR */);
 549
 550 /* Free the resources for the faces associated with a frame.  */
 551 extern void free_frame_faces (/* FRAME_PTR */);
 552
 553 /* Given a computed face, find or make an equivalent display face
 554    in face_vector, and return a pointer to it.  */
 555 extern struct face *intern_face (/* FRAME_PTR, struct face * */);
 556
 557 /* Given a frame and a face name, return the face's ID number, or
 558    zero if it isn't a recognized face name.  */
 559 extern int face_name_id_number (/* FRAME_PTR, Lisp_Object */);
 560
 561 /* Return non-zero if FONT1 and FONT2 have the same size bounding box.
 562    We assume that they're both character-cell fonts.  */
 563 extern int same_size_fonts (/* XFontStruct *, XFontStruct * */);
 564
 565 /* Recompute the GC's for the default and modeline faces.
 566    We call this after changing frame parameters on which those GC's
 567    depend.  */
 568 extern void recompute_basic_faces (/* FRAME_PTR */);
 569
 570 /* Return the face ID associated with a buffer position POS.  Store
 571    into *ENDPTR the next position at which a different face is
 572    needed.  This does not take account of glyphs that specify their
 573    own face codes.  F is the frame in use for display, and W is a
 574    window displaying the current buffer.
 575
 576    REGION_BEG, REGION_END delimit the region, so it can be highlighted.  */
 577 extern int compute_char_face (/* FRAME_PTR frame,
 578                                  struct window *w,
 579                                  int pos,
 580                                  int region_beg, int region_end,
 581                                  int *endptr */);
 582 /* Return the face ID to use to display a special glyph which selects
 583    FACE_CODE as the face ID, assuming that ordinarily the face would
 584    be BASIC_FACE.  F is the frame.  */
 585 extern int compute_glyph_face (/* FRAME_PTR, int */);
 586
 587 extern void w32_fill_rect ();
 588 extern void w32_clear_window ();
 589
 590 #define w32_fill_area(f,hdc,pix,x,y,nx,ny) \
 591 { \
 592     RECT rect; \
 593     rect.left = x; \
 594     rect.top = y; \
 595     rect.right = x + nx; \
 596     rect.bottom = y + ny; \
 597     w32_fill_rect (f,hdc,pix,&rect); \
 598 }
 599
 600 #define w32_clear_rect(f,hdc,lprect) \
 601 w32_fill_rect (f,hdc,f->output_data.w32->background_pixel,lprect)
 602
 603 #define w32_clear_area(f,hdc,x,y,nx,ny) \
 604 w32_fill_area (f,hdc,f->output_data.w32->background_pixel,x,y,nx,ny)
 605
 606 extern struct font_info *w32_load_font ();
 607 extern void w32_unload_font ();
 608
 609 /* Define for earlier versions of Visual C */
 610 #ifndef WM_MOUSEWHEEL
 611 #define WM_MOUSEWHEEL                  (WM_MOUSELAST + 1)
 612 #endif /* WM_MOUSEWHEEL */
 613 #ifndef MSH_MOUSEWHEEL
 614 #define MSH_MOUSEWHEEL                 "MSWHEEL_ROLLMSG"
 615 #endif /* MSH_MOUSEWHEEL */
 616
 617 #define WM_EMACS_START                 (WM_USER + 1)
 618 #define WM_EMACS_KILL                  (WM_EMACS_START + 0)
 619 #define WM_EMACS_CREATEWINDOW          (WM_EMACS_START + 1)
 620 #define WM_EMACS_DONE                  (WM_EMACS_START + 2)
 621 #define WM_EMACS_CREATESCROLLBAR       (WM_EMACS_START + 3)
 622 #define WM_EMACS_SHOWWINDOW            (WM_EMACS_START + 4)
 623 #define WM_EMACS_SETWINDOWPOS          (WM_EMACS_START + 5)
 624 #define WM_EMACS_DESTROYWINDOW         (WM_EMACS_START + 6)
 625 #define WM_EMACS_TRACKPOPUPMENU        (WM_EMACS_START + 7)
 626 #define WM_EMACS_SETFOCUS              (WM_EMACS_START + 8)
 627 #define WM_EMACS_SETFOREGROUND         (WM_EMACS_START + 9)
 628 #define WM_EMACS_SETLOCALE             (WM_EMACS_START + 10)
 629 #define WM_EMACS_SETKEYBOARDLAYOUT     (WM_EMACS_START + 11)
 630 #define WM_EMACS_REGISTER_HOT_KEY      (WM_EMACS_START + 12)
 631 #define WM_EMACS_UNREGISTER_HOT_KEY    (WM_EMACS_START + 13)
 632 #define WM_EMACS_TOGGLE_LOCK_KEY       (WM_EMACS_START + 14)
 633 #define WM_EMACS_END                   (WM_EMACS_START + 15)
 634
 635 #define WND_FONTWIDTH_INDEX    (0)
 636 #define WND_LINEHEIGHT_INDEX   (4)
 637 #define WND_BORDER_INDEX       (8)
 638 #define WND_SCROLLBAR_INDEX    (12)
 639 #define WND_BACKGROUND_INDEX   (16)
 640 #define WND_LAST_INDEX         (20)
 641
 642 #define WND_EXTRA_BYTES     (WND_LAST_INDEX)
 643
 644 extern DWORD dwWindowsThreadId;
 645 extern HANDLE hWindowsThread;
 646 extern DWORD dwMainThreadId;
 647 extern HANDLE hMainThread;
 648
 649 typedef struct W32Msg {
 650     MSG msg;
 651     DWORD dwModifiers;
 652     RECT rect;
 653 } W32Msg;
 654
 655 /* Structure for recording message when input thread must return a
 656    result that depends on lisp thread to compute.  Lisp thread can
 657    complete deferred messages out of order.  */
 658 typedef struct deferred_msg
 659 {
 660   struct deferred_msg * next;
 661   W32Msg                w32msg;
 662   LRESULT               result;
 663   int                   completed;
 664 } deferred_msg;
 665
 666 extern CRITICAL_SECTION critsect;
 667
 668 extern void init_crit ();
 669 extern void delete_crit ();
 670
 671 extern void signal_quit ();
 672
 673 #define enter_crit() EnterCriticalSection (&critsect)
 674 #define leave_crit() LeaveCriticalSection (&critsect)
 675
 676 extern void select_palette (struct frame * f, HDC hdc);
 677 extern void deselect_palette (struct frame * f, HDC hdc);
 678 extern HDC get_frame_dc (struct frame * f);
 679 extern int release_frame_dc (struct frame * f, HDC hDC);
 680
 681 extern BOOL get_next_msg ();
 682 extern BOOL post_msg ();
 683 extern void complete_deferred_msg (HWND hwnd, UINT msg, LRESULT result);
 684 extern void wait_for_sync ();
 685
 686 extern BOOL parse_button ();
 687
 688 /* Keypad command key support.  W32 doesn't have virtual keys defined
 689    for the function keys on the keypad (they are mapped to the standard
 690    fuction keys), so we define our own.  */
 691 #define VK_NUMPAD_BEGIN         0x92
 692 #define VK_NUMPAD_CLEAR         (VK_NUMPAD_BEGIN + 0)
 693 #define VK_NUMPAD_ENTER         (VK_NUMPAD_BEGIN + 1)
 694 #define VK_NUMPAD_PRIOR         (VK_NUMPAD_BEGIN + 2)
 695 #define VK_NUMPAD_NEXT          (VK_NUMPAD_BEGIN + 3)
 696 #define VK_NUMPAD_END           (VK_NUMPAD_BEGIN + 4)
 697 #define VK_NUMPAD_HOME          (VK_NUMPAD_BEGIN + 5)
 698 #define VK_NUMPAD_LEFT          (VK_NUMPAD_BEGIN + 6)
 699 #define VK_NUMPAD_UP            (VK_NUMPAD_BEGIN + 7)
 700 #define VK_NUMPAD_RIGHT         (VK_NUMPAD_BEGIN + 8)
 701 #define VK_NUMPAD_DOWN          (VK_NUMPAD_BEGIN + 9)
 702 #define VK_NUMPAD_INSERT        (VK_NUMPAD_BEGIN + 10)
 703 #define VK_NUMPAD_DELETE        (VK_NUMPAD_BEGIN + 11)
 704
 705 #ifndef VK_LWIN
 706 /* Older compiler environments don't have these defined.  */
 707 #define VK_LWIN                 0x5B
 708 #define VK_RWIN                 0x5C
 709 #define VK_APPS                 0x5D
 710 #endif
 711
 712 /* Support for treating Windows and Apps keys as modifiers.  These
 713    constants must not overlap with any of the dwControlKeyState flags in
 714    KEY_EVENT_RECORD.  */
 715 #define LEFT_WIN_PRESSED       0x8000
 716 #define RIGHT_WIN_PRESSED      0x4000
 717 #define APPS_PRESSED           0x2000