src/w32term.h

   1 /* Definitions and headers for communication on the Microsoft W32 API.
   2    Copyright (C) 1995, 2001 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)       \
  32   ((f)->bdf ? (f)->bdf->width : (f)->tm.tmAveCharWidth)
  33 #define FONT_HEIGHT(f)      \
  34    ((f)->bdf ? (f)->bdf->height : (f)->tm.tmHeight)
  35 #define FONT_BASE(f)        \
  36   ((f)->bdf ? (f)->bdf->ury : (f)->tm.tmAscent)
  37 #define FONT_DESCENT(f)     \
  38   ((f)->bdf ? -((f)->bdf->lly) : (f)->tm.tmDescent)
  39 #define FONT_MAX_WIDTH(f)   \
  40   ((f)->bdf ? (f)->bdf->width : (f)->tm.tmMaxCharWidth)
  41
  42 #define CP_DEFAULT 1004
  43 /* Special pseudo-codepages. */
  44 #define CP_8BIT      -1
  45 #define CP_UNICODE   -2
  46 #define CP_UNKNOWN   -3
  47
  48 #define CHECK_W32_FRAME(f, frame)               \
  49   if (NILP (frame))                             \
  50     f = SELECTED_FRAME ();                      \
  51   else                                          \
  52     {                                           \
  53       CHECK_LIVE_FRAME (frame, 0);              \
  54       f = XFRAME (frame);                       \
  55     }                                           \
  56   if (! FRAME_W32_P (f))
  57
  58 /* Indicates whether we are in the readsocket call and the message we
  59    are processing in the current loop */
  60
  61 extern MSG CurMsg;
  62 extern BOOL bUseDflt;
  63
  64 extern struct frame *x_window_to_frame ();
  65
  66 enum text_cursor_kinds {
  67   NO_CURSOR = -1,
  68   FILLED_BOX_CURSOR,
  69   HOLLOW_BOX_CURSOR,
  70   BAR_CURSOR
  71 };
  72
  73 /* Structure recording bitmaps and reference count.
  74    If REFCOUNT is 0 then this record is free to be reused.  */
  75
  76 struct w32_bitmap_record
  77 {
  78   Pixmap pixmap;
  79   char *file;
  80   HINSTANCE hinst; /* Used to load the file */
  81   int refcount;
  82   /* Record some info about this pixmap.  */
  83   int height, width, depth;
  84 };
  85
  86 /* Palette book-keeping stuff for mapping requested colors into the
  87    system palette.  Keep a ref-counted list of requested colors and
  88    regenerate the app palette whenever the requested list changes. */
  89
  90 extern Lisp_Object Vw32_enable_palette;
  91
  92 struct w32_palette_entry {
  93   struct w32_palette_entry * next;
  94   PALETTEENTRY entry;
  95 #if 0
  96   unsigned refcount;
  97 #endif
  98 };
  99
 100 extern void w32_regenerate_palette(struct frame *f);
 101
 102 \f
 103 /* For each display (currently only one on w32), we have a structure that
 104    records information about it.  */
 105
 106 struct w32_display_info
 107 {
 108   /* Chain of all w32_display_info structures.  */
 109   struct w32_display_info *next;
 110
 111   /* This is a cons cell of the form (NAME . FONT-LIST-CACHE).
 112      The same cons cell also appears in x_display_name_list.  */
 113   Lisp_Object name_list_element;
 114
 115   /* Number of frames that are on this display.  */
 116   int reference_count;
 117
 118   /* Dots per inch of the screen.  */
 119   double resx, resy;
 120
 121   /* Number of planes on this screen.  */
 122   int n_planes;
 123
 124   /* Number of bits per pixel on this screen.  */
 125   int n_cbits;
 126
 127   /* Dimensions of this screen.  */
 128   int height, width;
 129   int height_in,width_in;
 130
 131   /* Mask of things that cause the mouse to be grabbed.  */
 132   int grabbed;
 133
 134   /* Emacs bitmap-id of the default icon bitmap for this frame.
 135      Or -1 if none has been allocated yet.  */
 136   int icon_bitmap_id;
 137
 138   /* The root window of this screen.  */
 139   Window root_window;
 140
 141   /* The cursor to use for vertical scroll bars.  */
 142   Cursor vertical_scroll_bar_cursor;
 143
 144   /* color palette information.  */
 145   int has_palette;
 146   struct w32_palette_entry * color_list;
 147   unsigned num_colors;
 148   HPALETTE palette;
 149
 150   /* deferred action flags checked when starting frame update.  */
 151   int regen_palette;
 152
 153   /* Keystroke that has been faked by Emacs and will be ignored when
 154      received; value is reset after key is received.  */
 155   int faked_key;
 156
 157   /* A table of all the fonts we have already loaded.  */
 158   struct font_info *font_table;
 159
 160   /* The current capacity of font_table.  */
 161   int font_table_size;
 162
 163   /* Minimum width over all characters in all fonts in font_table.  */
 164   int smallest_char_width;
 165
 166   /* Minimum font height over all fonts in font_table.  */
 167   int smallest_font_height;
 168
 169   /* Reusable Graphics Context for drawing a cursor in a non-default face. */
 170   XGCValues *scratch_cursor_gc;
 171
 172   /* These variables describe the range of text currently shown in its
 173      mouse-face, together with the window they apply to. As long as
 174      the mouse stays within this range, we need not redraw anything on
 175      its account.  Rows and columns are glyph matrix positions in
 176      MOUSE_FACE_WINDOW.  */
 177   int mouse_face_beg_row, mouse_face_beg_col;
 178   int mouse_face_beg_x, mouse_face_beg_y;
 179   int mouse_face_end_row, mouse_face_end_col;
 180   int mouse_face_end_x, mouse_face_end_y;
 181   int mouse_face_past_end;
 182   Lisp_Object mouse_face_window;
 183   int mouse_face_face_id;
 184   Lisp_Object mouse_face_overlay;
 185
 186   /* 1 if a mouse motion event came and we didn't handle it right away because
 187      gc was in progress.  */
 188   int mouse_face_deferred_gc;
 189
 190   /* FRAME and X, Y position of mouse when last checked for
 191      highlighting.  X and Y can be negative or out of range for the frame.  */
 192   struct frame *mouse_face_mouse_frame;
 193   int mouse_face_mouse_x, mouse_face_mouse_y;
 194
 195   /* Nonzero means defer mouse-motion highlighting.  */
 196   int mouse_face_defer;
 197
 198   int mouse_face_image_state;
 199
 200   char *w32_id_name;
 201
 202   /* The number of fonts actually stored in w32_font_table.
 203      font_table[n] is used and valid iff 0 <= n < n_fonts. 0 <=
 204      n_fonts <= font_table_size. and font_table[i].name != 0. */
 205   int n_fonts;
 206
 207   /* Pointer to bitmap records.  */
 208   struct w32_bitmap_record *bitmaps;
 209
 210   /* Allocated size of bitmaps field.  */
 211   int bitmaps_size;
 212
 213   /* Last used bitmap index.  */
 214   int bitmaps_last;
 215
 216   /* The frame (if any) which has the window that has keyboard focus.
 217      Zero if none.  This is examined by Ffocus_frame in w32fns.c.  Note
 218      that a mere EnterNotify event can set this; if you need to know the
 219      last frame specified in a FocusIn or FocusOut event, use
 220      w32_focus_event_frame.  */
 221   struct frame *w32_focus_frame;
 222
 223   /* The last frame mentioned in a FocusIn or FocusOut event.  This is
 224      separate from w32_focus_frame, because whether or not LeaveNotify
 225      events cause us to lose focus depends on whether or not we have
 226      received a FocusIn event for it.  */
 227   struct frame *w32_focus_event_frame;
 228
 229   /* The frame which currently has the visual highlight, and should get
 230      keyboard input (other sorts of input have the frame encoded in the
 231      event).  It points to the focus frame's selected window's
 232      frame.  It differs from w32_focus_frame when we're using a global
 233      minibuffer.  */
 234   struct frame *w32_highlight_frame;
 235
 236   /* Cache of images.  */
 237   struct image_cache *image_cache;
 238 };
 239
 240 /* This is a chain of structures for all the displays currently in use.  */
 241 extern struct w32_display_info *x_display_list;
 242 extern struct w32_display_info one_w32_display_info;
 243
 244 /* This is a list of cons cells, each of the form (NAME . FONT-LIST-CACHE),
 245    one for each element of w32_display_list and in the same order.
 246    NAME is the name of the frame.
 247    FONT-LIST-CACHE records previous values returned by x-list-fonts.  */
 248 extern Lisp_Object w32_display_name_list;
 249
 250 /* Regexp matching a font name whose width is the same as `PIXEL_SIZE'.  */
 251 extern Lisp_Object Vx_pixel_size_width_font_regexp;
 252
 253 /* A flag to control how to display unibyte 8-bit character.  */
 254 extern int unibyte_display_via_language_environment;
 255
 256 struct w32_display_info *x_display_info_for_name ();
 257
 258 extern struct w32_display_info *w32_term_init ();
 259 \f
 260 extern Lisp_Object w32_list_fonts P_ ((struct frame *, Lisp_Object, int, int));
 261 extern struct font_info *w32_get_font_info (), *w32_query_font ();
 262 extern void w32_cache_char_metrics (XFontStruct *font);
 263 extern void w32_find_ccl_program();
 264 \f
 265 #define PIX_TYPE COLORREF
 266
 267 /* Each W32 frame object points to its own struct w32_display object
 268    in the output_data.w32 field.  The w32_display structure contains all
 269    the information that is specific to W32 windows.  */
 270
 271 /* Put some things in x_output for compatibility.
 272    NTEMACS_TODO: Move all common things here to eliminate unneccesary
 273    diffs between X and w32 code.  */
 274 struct x_output
 275 {
 276   PIX_TYPE background_pixel;
 277   PIX_TYPE foreground_pixel;
 278 };
 279
 280
 281 struct w32_output
 282 {
 283   /* Placeholder for things accessed through output_data.x.  */
 284   struct x_output x_compatible;
 285
 286   /* Menubar "widget" handle.  */
 287   HMENU menubar_widget;
 288
 289   /* Original palette (used to deselect real palette after drawing) */
 290   HPALETTE old_palette;
 291
 292   /* Position of the W32 window (x and y offsets in root window).  */
 293   int left_pos;
 294   int top_pos;
 295
 296   /* Border width of the W32 window as known by the window system.  */
 297   int border_width;
 298
 299   /* Size of the W32 window in pixels.  */
 300   int pixel_height, pixel_width;
 301
 302   /* Height of a line, in pixels.  */
 303   int line_height;
 304
 305   /* Here are the Graphics Contexts for the default font.  */
 306   XGCValues *cursor_gc;                         /* cursor drawing */
 307
 308   /* Width of the internal border.  This is a line of background color
 309      just inside the window's border.  When the frame is selected,
 310      a highlighting is displayed inside the internal border.  */
 311   int internal_border_width;
 312
 313   /* The window used for this frame.
 314      May be zero while the frame object is being created
 315      and the window has not yet been created.  */
 316   Window window_desc;
 317
 318   /* The window that is the parent of this window.
 319      Usually this is a window that was made by the window manager,
 320      but it can be the root window, and it can be explicitly specified
 321      (see the explicit_parent field, below).  */
 322   Window parent_desc;
 323
 324   /* Default ASCII font of this frame. */
 325   XFontStruct *font;
 326
 327   /* The baseline offset of the default ASCII font.  */
 328   int baseline_offset;
 329
 330   /* If a fontset is specified for this frame instead of font, this
 331      value contains an ID of the fontset, else -1.  */
 332   int fontset;
 333
 334   /* Pixel values used for various purposes.
 335      border_pixel may be -1 meaning use a gray tile.  */
 336   COLORREF cursor_pixel;
 337   COLORREF border_pixel;
 338   COLORREF mouse_pixel;
 339   COLORREF cursor_foreground_pixel;
 340
 341   /* Foreground color for scroll bars.  A value of -1 means use the
 342      default (black for non-toolkit scroll bars).  */
 343   COLORREF scroll_bar_foreground_pixel;
 344
 345   /* Background color for scroll bars.  A value of -1 means use the
 346      default (background color of the frame for non-toolkit scroll
 347      bars).  */
 348   COLORREF scroll_bar_background_pixel;
 349
 350   /* Descriptor for the cursor in use for this window.  */
 351   Cursor text_cursor;
 352   Cursor nontext_cursor;
 353   Cursor modeline_cursor;
 354   Cursor cross_cursor;
 355   Cursor hourglass_cursor;
 356   Cursor horizontal_drag_cursor;
 357
 358   /* Window whose cursor is hourglass_cursor.  This window is
 359      temporarily mapped to display an hourglass cursor.  */
 360   Window hourglass_window;
 361
 362   /* Non-zero means hourglass cursor is currently displayed.  */
 363   unsigned hourglass_p : 1;
 364
 365   /* Flag to set when the window needs to be completely repainted.  */
 366   int needs_exposure;
 367
 368   /* What kind of text cursor is drawn in this window right now?
 369      (If there is no cursor (phys_cursor_x < 0), then this means nothing.)  */
 370   enum text_cursor_kinds current_cursor;
 371
 372   /* What kind of text cursor should we draw in the future?
 373      This should always be filled_box_cursor or bar_cursor.  */
 374   enum text_cursor_kinds desired_cursor;
 375
 376   /* Width of bar cursor (if we are using that).  */
 377   int cursor_width;
 378
 379   DWORD dwStyle;
 380
 381   /* The size of the extra width currently allotted for vertical
 382      scroll bars, in pixels.  */
 383   int vertical_scroll_bar_extra;
 384
 385   /* The extra width currently allotted for the areas in which
 386      truncation marks, continuation marks, and overlay arrows are
 387      displayed.  */
 388   int left_fringe_width, right_fringe_width;
 389   int fringe_cols, fringes_extra;
 390
 391   /* This is the gravity value for the specified window position.  */
 392   int win_gravity;
 393
 394   /* The geometry flags for this window.  */
 395   int size_hint_flags;
 396
 397   /* This is the Emacs structure for the display this frame is on.  */
 398   /* struct w32_display_info *display_info; */
 399
 400   /* Nonzero means our parent is another application's window
 401      and was explicitly specified.  */
 402   char explicit_parent;
 403
 404   /* Nonzero means tried already to make this frame visible.  */
 405   char asked_for_visible;
 406
 407   /* Nonzero means menubar is currently active.  */
 408   char menubar_active;
 409
 410   /* Nonzero means menubar is about to become active, but should be
 411      brought up to date first.  */
 412   volatile char pending_menu_activation;
 413
 414   /* Relief GCs, colors etc.  */
 415   struct relief
 416   {
 417     XGCValues *gc;
 418     unsigned long pixel;
 419     int allocated_p;
 420   }
 421   black_relief, white_relief;
 422
 423   /* The background for which the above relief GCs were set up.
 424      They are changed only when a different background is involved.  */
 425   unsigned long relief_background;
 426 };
 427
 428 extern struct w32_output w32term_display;
 429
 430 /* Return the window associated with the frame F.  */
 431 #define FRAME_W32_WINDOW(f) ((f)->output_data.w32->window_desc)
 432
 433 #define FRAME_FOREGROUND_PIXEL(f) ((f)->output_data.x->foreground_pixel)
 434 #define FRAME_BACKGROUND_PIXEL(f) ((f)->output_data.x->background_pixel)
 435 #define FRAME_FONT(f) ((f)->output_data.w32->font)
 436 #define FRAME_FONTSET(f) ((f)->output_data.w32->fontset)
 437 #define FRAME_INTERNAL_BORDER_WIDTH(f) ((f)->output_data.w32->internal_border_width)
 438 #define FRAME_LINE_HEIGHT(f) ((f)->output_data.w32->line_height)
 439 /* Width of the default font of frame F.  Must be defined by each
 440    terminal specific header.  */
 441 #define FRAME_DEFAULT_FONT_WIDTH(F)     FONT_WIDTH (FRAME_FONT (F))
 442 #define FRAME_BASELINE_OFFSET(f) ((f)->output_data.w32->baseline_offset)
 443
 444 /* This gives the w32_display_info structure for the display F is on.  */
 445 #define FRAME_W32_DISPLAY_INFO(f) (&one_w32_display_info)
 446 #define FRAME_X_DISPLAY_INFO(f) (&one_w32_display_info)
 447
 448 /* This is the 'font_info *' which frame F has.  */
 449 #define FRAME_W32_FONT_TABLE(f) (FRAME_W32_DISPLAY_INFO (f)->font_table)
 450
 451 /* These two really ought to be called FRAME_PIXEL_{WIDTH,HEIGHT}.  */
 452 #define PIXEL_WIDTH(f) ((f)->output_data.w32->pixel_width)
 453 #define PIXEL_HEIGHT(f) ((f)->output_data.w32->pixel_height)
 454
 455 #define FRAME_DESIRED_CURSOR(f) ((f)->output_data.w32->desired_cursor)
 456
 457 /* Value is the smallest width of any character in any font on frame F.  */
 458
 459 #define FRAME_SMALLEST_CHAR_WIDTH(F) \
 460      FRAME_W32_DISPLAY_INFO(F)->smallest_char_width
 461
 462 /* Value is the smallest height of any font on frame F.  */
 463
 464 #define FRAME_SMALLEST_FONT_HEIGHT(F) \
 465      FRAME_W32_DISPLAY_INFO(F)->smallest_font_height
 466
 467 /* Return a pointer to the image cache of frame F.  */
 468
 469 #define FRAME_X_IMAGE_CACHE(F) FRAME_W32_DISPLAY_INFO ((F))->image_cache
 470
 471 \f
 472 /* Total width of fringes reserved for drawing truncation bitmaps,
 473    continuation bitmaps and alike.  The width is in canonical char
 474    units of the frame.  This must currently be the case because window
 475    sizes aren't pixel values.  If it weren't the case, we wouldn't be
 476    able to split windows horizontally nicely.  */
 477
 478 #define FRAME_X_FRINGE_COLS(F)  ((F)->output_data.w32->fringe_cols)
 479
 480 /* Total width of fringes in pixels.  */
 481
 482 #define FRAME_X_FRINGE_WIDTH(F) ((F)->output_data.w32->fringes_extra)
 483
 484 /* Pixel-width of the left and right fringe.  */
 485
 486 #define FRAME_X_LEFT_FRINGE_WIDTH(F) ((F)->output_data.w32->left_fringe_width)
 487 #define FRAME_X_RIGHT_FRINGE_WIDTH(F) ((F)->output_data.w32->right_fringe_width)
 488
 489
 490 \f
 491 /* W32-specific scroll bar stuff.  */
 492
 493 /* We represent scroll bars as lisp vectors.  This allows us to place
 494    references to them in windows without worrying about whether we'll
 495    end up with windows referring to dead scroll bars; the garbage
 496    collector will free it when its time comes.
 497
 498    We use struct scroll_bar as a template for accessing fields of the
 499    vector.  */
 500
 501 struct scroll_bar {
 502
 503   /* These fields are shared by all vectors.  */
 504   EMACS_INT size_from_Lisp_Vector_struct;
 505   struct Lisp_Vector *next_from_Lisp_Vector_struct;
 506
 507   /* The window we're a scroll bar for.  */
 508   Lisp_Object window;
 509
 510   /* The next and previous in the chain of scroll bars in this frame.  */
 511   Lisp_Object next, prev;
 512
 513   /* The window representing this scroll bar.  Since this is a full
 514      32-bit quantity, we store it split into two 32-bit values.  */
 515   Lisp_Object w32_window_low, w32_window_high;
 516
 517   /* Same as above for the widget.  */
 518   Lisp_Object w32_widget_low, w32_widget_high;
 519
 520   /* The position and size of the scroll bar in pixels, relative to the
 521      frame.  */
 522   Lisp_Object top, left, width, height;
 523
 524   /* The starting and ending positions of the handle, relative to the
 525      handle area (i.e. zero is the top position, not
 526      SCROLL_BAR_TOP_BORDER).  If they're equal, that means the handle
 527      hasn't been drawn yet.
 528
 529      These are not actually the locations where the beginning and end
 530      are drawn; in order to keep handles from becoming invisible when
 531      editing large files, we establish a minimum height by always
 532      drawing handle bottoms VERTICAL_SCROLL_BAR_MIN_HANDLE pixels below
 533      where they would be normally; the bottom and top are in a
 534      different co-ordinate system.  */
 535   Lisp_Object start, end;
 536
 537   /* If the scroll bar handle is currently being dragged by the user,
 538      this is the number of pixels from the top of the handle to the
 539      place where the user grabbed it.  If the handle isn't currently
 540      being dragged, this is Qnil.  */
 541   Lisp_Object dragging;
 542 };
 543
 544 /* The number of elements a vector holding a struct scroll_bar needs.  */
 545 #define SCROLL_BAR_VEC_SIZE                                     \
 546   ((sizeof (struct scroll_bar)                                  \
 547     - sizeof (EMACS_INT) - sizeof (struct Lisp_Vector *))       \
 548    / sizeof (Lisp_Object))
 549
 550 /* Turning a lisp vector value into a pointer to a struct scroll_bar.  */
 551 #define XSCROLL_BAR(vec) ((struct scroll_bar *) XVECTOR (vec))
 552
 553
 554 /* Building a 32-bit C integer from two 16-bit lisp integers.  */
 555 #define SCROLL_BAR_PACK(low, high) (XINT (high) << 16 | XINT (low))
 556
 557 /* Setting two lisp integers to the low and high words of a 32-bit C int.  */
 558 #define SCROLL_BAR_UNPACK(low, high, int32) \
 559   (XSETINT ((low),   (int32)        & 0xffff), \
 560    XSETINT ((high), ((int32) >> 16) & 0xffff))
 561
 562
 563 /* Extract the window id of the scroll bar from a struct scroll_bar.  */
 564 #define SCROLL_BAR_W32_WINDOW(ptr) \
 565   ((Window) SCROLL_BAR_PACK ((ptr)->w32_window_low, (ptr)->w32_window_high))
 566
 567 /* Store a window id in a struct scroll_bar.  */
 568 #define SET_SCROLL_BAR_W32_WINDOW(ptr, id) \
 569   (SCROLL_BAR_UNPACK ((ptr)->w32_window_low, (ptr)->w32_window_high, (int) id))
 570
 571 /* Extract the X widget of the scroll bar from a struct scroll_bar.  */
 572 #define SCROLL_BAR_X_WIDGET(ptr) \
 573   ((Widget) SCROLL_BAR_PACK ((ptr)->x_widget_low, (ptr)->x_widget_high))
 574
 575 /* Store a widget id in a struct scroll_bar.  */
 576 #define SET_SCROLL_BAR_X_WIDGET(ptr, w) \
 577   (SCROLL_BAR_UNPACK ((ptr)->x_widget_low, (ptr)->x_widget_high, (int) w))
 578
 579 /* Return the inside width of a vertical scroll bar, given the outside
 580    width.  */
 581 #define VERTICAL_SCROLL_BAR_INSIDE_WIDTH(f,width) \
 582   ((width) \
 583    - VERTICAL_SCROLL_BAR_LEFT_BORDER \
 584    - VERTICAL_SCROLL_BAR_RIGHT_BORDER \
 585    - VERTICAL_SCROLL_BAR_WIDTH_TRIM * 2)
 586
 587 /* Return the length of the rectangle within which the top of the
 588    handle must stay.  This isn't equivalent to the inside height,
 589    because the scroll bar handle has a minimum height.
 590
 591    This is the real range of motion for the scroll bar, so when we're
 592    scaling buffer positions to scroll bar positions, we use this, not
 593    VERTICAL_SCROLL_BAR_INSIDE_HEIGHT.  */
 594 #define VERTICAL_SCROLL_BAR_TOP_RANGE(f,height) \
 595   (VERTICAL_SCROLL_BAR_INSIDE_HEIGHT (f, height) - VERTICAL_SCROLL_BAR_MIN_HANDLE)
 596
 597 /* Return the inside height of vertical scroll bar, given the outside
 598    height.  See VERTICAL_SCROLL_BAR_TOP_RANGE too.  */
 599 #define VERTICAL_SCROLL_BAR_INSIDE_HEIGHT(f,height) \
 600   ((height) - VERTICAL_SCROLL_BAR_TOP_BORDER - VERTICAL_SCROLL_BAR_BOTTOM_BORDER)
 601
 602
 603 /* Border widths for scroll bars.
 604
 605    Scroll bar windows don't have any borders; their border width is
 606    set to zero, and we redraw borders ourselves.  This makes the code
 607    a bit cleaner, since we don't have to convert between outside width
 608    (used when relating to the rest of the screen) and inside width
 609    (used when sizing and drawing the scroll bar window itself).
 610
 611    The handle moves up and down/back and forth in a rectangle inset
 612    from the edges of the scroll bar.  These are widths by which we
 613    inset the handle boundaries from the scroll bar edges.  */
 614 #define VERTICAL_SCROLL_BAR_LEFT_BORDER (0)
 615 #define VERTICAL_SCROLL_BAR_RIGHT_BORDER (0)
 616 #define VERTICAL_SCROLL_BAR_TOP_BORDER (vertical_scroll_bar_top_border)
 617 #define VERTICAL_SCROLL_BAR_BOTTOM_BORDER (vertical_scroll_bar_bottom_border)
 618
 619 /* Minimum lengths for scroll bar handles, in pixels.  */
 620 #define VERTICAL_SCROLL_BAR_MIN_HANDLE (vertical_scroll_bar_min_handle)
 621
 622 /* Trimming off a few pixels from each side prevents
 623    text from glomming up against the scroll bar */
 624 #define VERTICAL_SCROLL_BAR_WIDTH_TRIM (0)
 625
 626 \f
 627 /* Manipulating pixel sizes and character sizes.
 628    Knowledge of which factors affect the overall size of the window should
 629    be hidden in these macros, if that's possible.
 630
 631    Return the upper/left pixel position of the character cell on frame F
 632    at ROW/COL.  */
 633 #define CHAR_TO_PIXEL_ROW(f, row) \
 634   ((f)->output_data.w32->internal_border_width \
 635    + (row) * (f)->output_data.w32->line_height)
 636 #define CHAR_TO_PIXEL_COL(f, col) \
 637   ((f)->output_data.w32->internal_border_width \
 638    + (col) * FONT_WIDTH ((f)->output_data.w32->font))
 639
 640 /* Return the pixel width/height of frame F if it has
 641    WIDTH columns/HEIGHT rows.  */
 642 #define CHAR_TO_PIXEL_WIDTH(f, width) \
 643   (CHAR_TO_PIXEL_COL (f, width) \
 644    + (f)->output_data.w32->vertical_scroll_bar_extra \
 645    + (f)->output_data.w32->fringes_extra \
 646    + (f)->output_data.w32->internal_border_width)
 647 #define CHAR_TO_PIXEL_HEIGHT(f, height) \
 648   (CHAR_TO_PIXEL_ROW (f, height) \
 649    + (f)->output_data.w32->internal_border_width)
 650
 651
 652 /* Return the row/column (zero-based) of the character cell containing
 653    the pixel on FRAME at ROW/COL.  */
 654 #define PIXEL_TO_CHAR_ROW(f, row) \
 655   (((row) - (f)->output_data.w32->internal_border_width) \
 656    / (f)->output_data.w32->line_height)
 657 #define PIXEL_TO_CHAR_COL(f, col) \
 658   (((col) - (f)->output_data.w32->internal_border_width) \
 659    / FONT_WIDTH ((f)->output_data.w32->font))
 660
 661 /* How many columns/rows of text can we fit in WIDTH/HEIGHT pixels on
 662    frame F?  */
 663 #define PIXEL_TO_CHAR_WIDTH(f, width) \
 664   (PIXEL_TO_CHAR_COL (f, ((width) \
 665                           - (f)->output_data.w32->internal_border_width \
 666                           - (f)->output_data.w32->fringes_extra \
 667                           - (f)->output_data.w32->vertical_scroll_bar_extra)))
 668 #define PIXEL_TO_CHAR_HEIGHT(f, height) \
 669   (PIXEL_TO_CHAR_ROW (f, ((height) \
 670                           - (f)->output_data.w32->internal_border_width)))
 671
 672 \f
 673 extern void w32_fill_rect ();
 674 extern void w32_clear_window ();
 675
 676 #define w32_fill_area(f,hdc,pix,x,y,nx,ny) \
 677 { \
 678     RECT rect; \
 679     rect.left = x; \
 680     rect.top = y; \
 681     rect.right = x + nx; \
 682     rect.bottom = y + ny; \
 683     w32_fill_rect (f,hdc,pix,&rect); \
 684 }
 685
 686 #define w32_clear_rect(f,hdc,lprect) \
 687 w32_fill_rect (f,hdc,f->output_data.x->background_pixel,lprect)
 688
 689 #define w32_clear_area(f,hdc,px,py,nx,ny) \
 690 w32_fill_area (f,hdc,f->output_data.x->background_pixel,px,py,nx,ny)
 691
 692 extern struct font_info *w32_load_font ();
 693 extern void w32_unload_font ();
 694
 695 /* Define for earlier versions of Visual C */
 696 #ifndef WM_MOUSEWHEEL
 697 #define WM_MOUSEWHEEL                  (WM_MOUSELAST + 1)
 698 #endif /* WM_MOUSEWHEEL */
 699 #ifndef MSH_MOUSEWHEEL
 700 #define MSH_MOUSEWHEEL                 "MSWHEEL_ROLLMSG"
 701 #endif /* MSH_MOUSEWHEEL */
 702
 703 #define WM_EMACS_START                 (WM_USER + 1)
 704 #define WM_EMACS_KILL                  (WM_EMACS_START + 0)
 705 #define WM_EMACS_CREATEWINDOW          (WM_EMACS_START + 1)
 706 #define WM_EMACS_DONE                  (WM_EMACS_START + 2)
 707 #define WM_EMACS_CREATESCROLLBAR       (WM_EMACS_START + 3)
 708 #define WM_EMACS_SHOWWINDOW            (WM_EMACS_START + 4)
 709 #define WM_EMACS_SETWINDOWPOS          (WM_EMACS_START + 5)
 710 #define WM_EMACS_DESTROYWINDOW         (WM_EMACS_START + 6)
 711 #define WM_EMACS_TRACKPOPUPMENU        (WM_EMACS_START + 7)
 712 #define WM_EMACS_SETFOCUS              (WM_EMACS_START + 8)
 713 #define WM_EMACS_SETFOREGROUND         (WM_EMACS_START + 9)
 714 #define WM_EMACS_SETLOCALE             (WM_EMACS_START + 10)
 715 #define WM_EMACS_SETKEYBOARDLAYOUT     (WM_EMACS_START + 11)
 716 #define WM_EMACS_REGISTER_HOT_KEY      (WM_EMACS_START + 12)
 717 #define WM_EMACS_UNREGISTER_HOT_KEY    (WM_EMACS_START + 13)
 718 #define WM_EMACS_TOGGLE_LOCK_KEY       (WM_EMACS_START + 14)
 719 #define WM_EMACS_TRACK_CARET           (WM_EMACS_START + 15)
 720 #define WM_EMACS_DESTROY_CARET         (WM_EMACS_START + 16)
 721 #define WM_EMACS_END                   (WM_EMACS_START + 17)
 722
 723 #define WND_FONTWIDTH_INDEX    (0)
 724 #define WND_LINEHEIGHT_INDEX   (4)
 725 #define WND_BORDER_INDEX       (8)
 726 #define WND_SCROLLBAR_INDEX    (12)
 727 #define WND_BACKGROUND_INDEX   (16)
 728 #define WND_LAST_INDEX         (20)
 729
 730 #define WND_EXTRA_BYTES     (WND_LAST_INDEX)
 731
 732 extern DWORD dwWindowsThreadId;
 733 extern HANDLE hWindowsThread;
 734 extern DWORD dwMainThreadId;
 735 extern HANDLE hMainThread;
 736
 737 typedef struct W32Msg {
 738     MSG msg;
 739     DWORD dwModifiers;
 740     RECT rect;
 741 } W32Msg;
 742
 743 /* Structure for recording message when input thread must return a
 744    result that depends on lisp thread to compute.  Lisp thread can
 745    complete deferred messages out of order.  */
 746 typedef struct deferred_msg
 747 {
 748   struct deferred_msg * next;
 749   W32Msg                w32msg;
 750   LRESULT               result;
 751   int                   completed;
 752 } deferred_msg;
 753
 754 extern CRITICAL_SECTION critsect;
 755
 756 extern void init_crit ();
 757 extern void delete_crit ();
 758
 759 extern void signal_quit ();
 760
 761 #define enter_crit() EnterCriticalSection (&critsect)
 762 #define leave_crit() LeaveCriticalSection (&critsect)
 763
 764 extern void select_palette (struct frame * f, HDC hdc);
 765 extern void deselect_palette (struct frame * f, HDC hdc);
 766 extern HDC get_frame_dc (struct frame * f);
 767 extern int release_frame_dc (struct frame * f, HDC hDC);
 768
 769 extern void drain_message_queue ();
 770
 771 extern BOOL get_next_msg ();
 772 extern BOOL post_msg ();
 773 extern void complete_deferred_msg (HWND hwnd, UINT msg, LRESULT result);
 774 extern void wait_for_sync ();
 775
 776 extern BOOL parse_button ();
 777
 778 /* Keypad command key support.  W32 doesn't have virtual keys defined
 779    for the function keys on the keypad (they are mapped to the standard
 780    fuction keys), so we define our own.  */
 781 #define VK_NUMPAD_BEGIN         0x92
 782 #define VK_NUMPAD_CLEAR         (VK_NUMPAD_BEGIN + 0)
 783 #define VK_NUMPAD_ENTER         (VK_NUMPAD_BEGIN + 1)
 784 #define VK_NUMPAD_PRIOR         (VK_NUMPAD_BEGIN + 2)
 785 #define VK_NUMPAD_NEXT          (VK_NUMPAD_BEGIN + 3)
 786 #define VK_NUMPAD_END           (VK_NUMPAD_BEGIN + 4)
 787 #define VK_NUMPAD_HOME          (VK_NUMPAD_BEGIN + 5)
 788 #define VK_NUMPAD_LEFT          (VK_NUMPAD_BEGIN + 6)
 789 #define VK_NUMPAD_UP            (VK_NUMPAD_BEGIN + 7)
 790 #define VK_NUMPAD_RIGHT         (VK_NUMPAD_BEGIN + 8)
 791 #define VK_NUMPAD_DOWN          (VK_NUMPAD_BEGIN + 9)
 792 #define VK_NUMPAD_INSERT        (VK_NUMPAD_BEGIN + 10)
 793 #define VK_NUMPAD_DELETE        (VK_NUMPAD_BEGIN + 11)
 794
 795 #ifndef VK_LWIN
 796 /* Older compiler environments don't have these defined.  */
 797 #define VK_LWIN                 0x5B
 798 #define VK_RWIN                 0x5C
 799 #define VK_APPS                 0x5D
 800 #endif
 801
 802 /* Support for treating Windows and Apps keys as modifiers.  These
 803    constants must not overlap with any of the dwControlKeyState flags in
 804    KEY_EVENT_RECORD.  */
 805 #define LEFT_WIN_PRESSED       0x8000
 806 #define RIGHT_WIN_PRESSED      0x4000
 807 #define APPS_PRESSED           0x2000
 808
 809 /* When compiling on Windows 9x/ME and NT 3.x, the following are not defined
 810    (even though they are supported on 98 and ME.  */
 811 #ifndef WM_MOUSELEAVE
 812 #define WM_MOUSELEAVE 0x02A3
 813 #define TME_LEAVE 0x00000002;
 814
 815 typedef struct tagTRACKMOUSEEVENT
 816 {
 817   DWORD cbSize;
 818   DWORD dwFlags;
 819   HWND hwndTrack;
 820   DWORD dwHoverTime;
 821 } TRACKMOUSEEVENT;
 822 #endif
 823
 824 struct image;
 825 struct face;
 826
 827 XGCValues *XCreateGC (void *, Window, unsigned long, XGCValues *);
 828 struct frame * check_x_frame (Lisp_Object);
 829 EXFUN (Fx_display_color_p, 1);
 830 EXFUN (Fx_display_grayscale_p, 1);
 831 int image_ascent P_ ((struct image *, struct face *));