src/w32term.h

   1 /* Definitions and headers for communication on the Microsoft W32 API.
   2    Copyright (C) 1995, 2001, 2002, 2003, 2004,
   3                  2005, 2006, 2007, 2008 Free Software Foundation, Inc.
   4
   5 This file is part of GNU Emacs.
   6
   7 GNU Emacs is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 3, or (at your option)
  10 any later version.
  11
  12 GNU Emacs is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GNU Emacs; see the file COPYING.  If not, write to
  19 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  20 Boston, MA 02110-1301, USA.  */
  21
  22 /* Added by Kevin Gallo */
  23
  24 #include "w32gui.h"
  25
  26 \f
  27 #define BLACK_PIX_DEFAULT(f) PALETTERGB(0,0,0)
  28 #define WHITE_PIX_DEFAULT(f) PALETTERGB(255,255,255)
  29
  30 #define FONT_WIDTH(f)       \
  31   ((f)->bdf ? (f)->bdf->width : (f)->tm.tmMaxCharWidth)
  32 #define FONT_HEIGHT(f)      \
  33    ((f)->bdf ? (f)->bdf->height : (f)->tm.tmHeight)
  34 #define FONT_BASE(f)        \
  35   ((f)->bdf ? (f)->bdf->ury : (f)->tm.tmAscent)
  36 #define FONT_DESCENT(f)     \
  37   ((f)->bdf ? -((f)->bdf->lly) : (f)->tm.tmDescent)
  38 #define FONT_AVG_WIDTH(f)   \
  39   ((f)->bdf ? (f)->bdf->width : (f)->tm.tmAveCharWidth)
  40
  41 #define CP_DEFAULT 1004
  42 /* Special pseudo-codepages. */
  43 #define CP_8BIT      -1
  44 #define CP_UNICODE   -2
  45 #define CP_UNKNOWN   -3
  46
  47 #define CHECK_W32_FRAME(f, frame)               \
  48   if (NILP (frame))                             \
  49     f = SELECTED_FRAME ();                      \
  50   else                                          \
  51     {                                           \
  52       CHECK_LIVE_FRAME (frame, 0);              \
  53       f = XFRAME (frame);                       \
  54     }                                           \
  55   if (! FRAME_W32_P (f))
  56
  57 /* Indicates whether we are in the readsocket call and the message we
  58    are processing in the current loop */
  59
  60 extern MSG CurMsg;
  61 extern BOOL bUseDflt;
  62
  63 extern struct frame *x_window_to_frame ();
  64
  65 /* Structure recording bitmaps and reference count.
  66    If REFCOUNT is 0 then this record is free to be reused.  */
  67
  68 struct w32_bitmap_record
  69 {
  70   Pixmap pixmap;
  71   char *file;
  72   HINSTANCE hinst; /* Used to load the file */
  73   int refcount;
  74   /* Record some info about this pixmap.  */
  75   int height, width, depth;
  76 };
  77
  78 /* Palette book-keeping stuff for mapping requested colors into the
  79    system palette.  Keep a ref-counted list of requested colors and
  80    regenerate the app palette whenever the requested list changes. */
  81
  82 extern Lisp_Object Vw32_enable_palette;
  83
  84 struct w32_palette_entry {
  85   struct w32_palette_entry * next;
  86   PALETTEENTRY entry;
  87 #if 0
  88   unsigned refcount;
  89 #endif
  90 };
  91
  92 extern void w32_regenerate_palette(struct frame *f);
  93
  94 \f
  95 /* For each display (currently only one on w32), we have a structure that
  96    records information about it.  */
  97
  98 struct w32_display_info
  99 {
 100   /* Chain of all w32_display_info structures.  */
 101   struct w32_display_info *next;
 102
 103   /* The generic display parameters corresponding to this w32 display.  */
 104   struct terminal *terminal;
 105
 106   /* This is a cons cell of the form (NAME . FONT-LIST-CACHE).
 107      The same cons cell also appears in x_display_name_list.  */
 108   Lisp_Object name_list_element;
 109
 110   /* Number of frames that are on this display.  */
 111   int reference_count;
 112
 113   /* Dots per inch of the screen.  */
 114   double resx, resy;
 115
 116   /* Number of planes on this screen.  */
 117   int n_planes;
 118
 119   /* Number of bits per pixel on this screen.  */
 120   int n_cbits;
 121
 122   /* Dimensions of this screen.  */
 123   int height, width;
 124   int height_in,width_in;
 125
 126   /* Mask of things that cause the mouse to be grabbed.  */
 127   int grabbed;
 128
 129   /* Emacs bitmap-id of the default icon bitmap for this frame.
 130      Or -1 if none has been allocated yet.  */
 131   int icon_bitmap_id;
 132
 133   /* The root window of this screen.  */
 134   Window root_window;
 135
 136   /* The cursor to use for vertical scroll bars.  */
 137   Cursor vertical_scroll_bar_cursor;
 138
 139   /* Resource data base */
 140   XrmDatabase xrdb;
 141
 142   /* color palette information.  */
 143   int has_palette;
 144   struct w32_palette_entry * color_list;
 145   unsigned num_colors;
 146   HPALETTE palette;
 147
 148   /* deferred action flags checked when starting frame update.  */
 149   int regen_palette;
 150
 151   /* Keystroke that has been faked by Emacs and will be ignored when
 152      received; value is reset after key is received.  */
 153   int faked_key;
 154
 155   /* A table of all the fonts we have already loaded.  */
 156   struct font_info *font_table;
 157
 158   /* The current capacity of font_table.  */
 159   int font_table_size;
 160
 161   /* Minimum width over all characters in all fonts in font_table.  */
 162   int smallest_char_width;
 163
 164   /* Minimum font height over all fonts in font_table.  */
 165   int smallest_font_height;
 166
 167   /* Reusable Graphics Context for drawing a cursor in a non-default face. */
 168   XGCValues *scratch_cursor_gc;
 169
 170   /* These variables describe the range of text currently shown in its
 171      mouse-face, together with the window they apply to. As long as
 172      the mouse stays within this range, we need not redraw anything on
 173      its account.  Rows and columns are glyph matrix positions in
 174      MOUSE_FACE_WINDOW.  */
 175   int mouse_face_beg_row, mouse_face_beg_col;
 176   int mouse_face_beg_x, mouse_face_beg_y;
 177   int mouse_face_end_row, mouse_face_end_col;
 178   int mouse_face_end_x, mouse_face_end_y;
 179   int mouse_face_past_end;
 180   Lisp_Object mouse_face_window;
 181   int mouse_face_face_id;
 182   Lisp_Object mouse_face_overlay;
 183
 184   /* 1 if a mouse motion event came and we didn't handle it right away because
 185      gc was in progress.  */
 186   int mouse_face_deferred_gc;
 187
 188   /* FRAME and X, Y position of mouse when last checked for
 189      highlighting.  X and Y can be negative or out of range for the frame.  */
 190   struct frame *mouse_face_mouse_frame;
 191   int mouse_face_mouse_x, mouse_face_mouse_y;
 192
 193   /* Nonzero means defer mouse-motion highlighting.  */
 194   int mouse_face_defer;
 195
 196   /* Nonzero means that the mouse highlight should not be shown.  */
 197   int mouse_face_hidden;
 198
 199   int mouse_face_image_state;
 200
 201   char *w32_id_name;
 202
 203   /* The number of fonts actually stored in w32_font_table.
 204      font_table[n] is used and valid if 0 <= n < n_fonts. 0 <=
 205      n_fonts <= font_table_size. and font_table[i].name != 0. */
 206   int n_fonts;
 207
 208   /* Pointer to bitmap records.  */
 209   struct w32_bitmap_record *bitmaps;
 210
 211   /* Allocated size of bitmaps field.  */
 212   int bitmaps_size;
 213
 214   /* Last used bitmap index.  */
 215   int bitmaps_last;
 216
 217   /* The frame (if any) which has the window that has keyboard focus.
 218      Zero if none.  This is examined by Ffocus_frame in w32fns.c.  Note
 219      that a mere EnterNotify event can set this; if you need to know the
 220      last frame specified in a FocusIn or FocusOut event, use
 221      w32_focus_event_frame.  */
 222   struct frame *w32_focus_frame;
 223
 224   /* The last frame mentioned in a FocusIn or FocusOut event.  This is
 225      separate from w32_focus_frame, because whether or not LeaveNotify
 226      events cause us to lose focus depends on whether or not we have
 227      received a FocusIn event for it.  */
 228   struct frame *w32_focus_event_frame;
 229
 230   /* The frame which currently has the visual highlight, and should get
 231      keyboard input (other sorts of input have the frame encoded in the
 232      event).  It points to the focus frame's selected window's
 233      frame.  It differs from w32_focus_frame when we're using a global
 234      minibuffer.  */
 235   struct frame *x_highlight_frame;
 236
 237   /* Cache of images.  */
 238   struct image_cache *image_cache;
 239 };
 240
 241 /* This is a chain of structures for all the displays currently in use.  */
 242 extern struct w32_display_info *x_display_list;
 243 extern struct w32_display_info one_w32_display_info;
 244
 245 /* This is a list of cons cells, each of the form (NAME . FONT-LIST-CACHE),
 246    one for each element of w32_display_list and in the same order.
 247    NAME is the name of the frame.
 248    FONT-LIST-CACHE records previous values returned by x-list-fonts.  */
 249 extern Lisp_Object w32_display_name_list;
 250
 251 /* Regexp matching a font name whose width is the same as `PIXEL_SIZE'.  */
 252 extern Lisp_Object Vx_pixel_size_width_font_regexp;
 253
 254 struct w32_display_info *x_display_info_for_name ();
 255
 256 Lisp_Object display_x_get_resource P_ ((struct w32_display_info *,
 257                                         Lisp_Object, Lisp_Object,
 258                                         Lisp_Object, Lisp_Object));
 259
 260 extern struct w32_display_info *w32_term_init ();
 261 \f
 262 extern Lisp_Object w32_list_fonts P_ ((struct frame *, Lisp_Object, int, int));
 263 extern struct font_info *w32_get_font_info (), *w32_query_font ();
 264 extern void w32_cache_char_metrics (XFontStruct *font);
 265 extern void w32_find_ccl_program();
 266 extern Lisp_Object x_get_font_repertory P_ ((struct frame *,
 267                                              struct font_info *));
 268 \f
 269 #define PIX_TYPE COLORREF
 270
 271 /* Each W32 frame object points to its own struct w32_display object
 272    in the output_data.w32 field.  The w32_display structure contains all
 273    the information that is specific to W32 windows.  */
 274
 275 /* Put some things in x_output for compatibility.
 276    NTEMACS_TODO: Move all common things here to eliminate unneccesary
 277    diffs between X and w32 code.  */
 278 struct x_output
 279 {
 280 #if 0 /* These are also defined in struct frame.  Use that instead.  */
 281   PIX_TYPE background_pixel;
 282   PIX_TYPE foreground_pixel;
 283 #endif
 284
 285   /* Keep track of focus.  May be EXPLICIT if we received a FocusIn for this
 286      frame, or IMPLICIT if we received an EnterNotify.
 287      FocusOut and LeaveNotify clears EXPLICIT/IMPLICIT. */
 288   int focus_state;
 289
 290 };
 291
 292 enum
 293 {
 294   /* Values for focus_state, used as bit mask.
 295      EXPLICIT means we received a FocusIn for the frame and know it has
 296      the focus.  IMPLICIT means we recevied an EnterNotify and the frame
 297      may have the focus if no window manager is running.
 298      FocusOut and LeaveNotify clears EXPLICIT/IMPLICIT. */
 299   FOCUS_NONE     = 0,
 300   FOCUS_IMPLICIT = 1,
 301   FOCUS_EXPLICIT = 2
 302 };
 303
 304 struct w32_output
 305 {
 306   /* Placeholder for things accessed through output_data.x.  */
 307   struct x_output x_compatible;
 308
 309   /* Menubar "widget" handle.  */
 310   HMENU menubar_widget;
 311
 312   /* Original palette (used to deselect real palette after drawing) */
 313   HPALETTE old_palette;
 314
 315   /* Here are the Graphics Contexts for the default font.  */
 316   XGCValues *cursor_gc;                         /* cursor drawing */
 317
 318   /* The window used for this frame.
 319      May be zero while the frame object is being created
 320      and the window has not yet been created.  */
 321   Window window_desc;
 322
 323   /* The window that is the parent of this window.
 324      Usually this is a window that was made by the window manager,
 325      but it can be the root window, and it can be explicitly specified
 326      (see the explicit_parent field, below).  */
 327   Window parent_desc;
 328
 329   /* Default ASCII font of this frame. */
 330   XFontStruct *font;
 331
 332 #ifdef USE_FONT_BACKEND
 333   struct font *fontp;
 334 #endif  /* USE_FONT_BACKEND */
 335
 336   /* The baseline offset of the default ASCII font.  */
 337   int baseline_offset;
 338
 339   /* If a fontset is specified for this frame instead of font, this
 340      value contains an ID of the fontset, else -1.  */
 341   int fontset;
 342
 343   /* Pixel values used for various purposes.
 344      border_pixel may be -1 meaning use a gray tile.  */
 345   COLORREF cursor_pixel;
 346   COLORREF border_pixel;
 347   COLORREF mouse_pixel;
 348   COLORREF cursor_foreground_pixel;
 349
 350   /* Foreground color for scroll bars.  A value of -1 means use the
 351      default (black for non-toolkit scroll bars).  */
 352   COLORREF scroll_bar_foreground_pixel;
 353
 354   /* Background color for scroll bars.  A value of -1 means use the
 355      default (background color of the frame for non-toolkit scroll
 356      bars).  */
 357   COLORREF scroll_bar_background_pixel;
 358
 359   /* Descriptor for the cursor in use for this window.  */
 360   Cursor text_cursor;
 361   Cursor nontext_cursor;
 362   Cursor modeline_cursor;
 363   Cursor hand_cursor;
 364   Cursor hourglass_cursor;
 365   Cursor horizontal_drag_cursor;
 366
 367   /* Window whose cursor is hourglass_cursor.  This window is
 368      temporarily mapped to display an hourglass cursor.  */
 369   Window hourglass_window;
 370
 371   /* Non-zero means hourglass cursor is currently displayed.  */
 372   unsigned hourglass_p : 1;
 373
 374   /* Flag to set when the window needs to be completely repainted.  */
 375   int needs_exposure;
 376
 377   DWORD dwStyle;
 378
 379   /* This is the Emacs structure for the display this frame is on.  */
 380   /* struct w32_display_info *display_info; */
 381
 382   /* Nonzero means our parent is another application's window
 383      and was explicitly specified.  */
 384   char explicit_parent;
 385
 386   /* Nonzero means tried already to make this frame visible.  */
 387   char asked_for_visible;
 388
 389   /* Nonzero means menubar is currently active.  */
 390   char menubar_active;
 391
 392   /* Nonzero means menubar is about to become active, but should be
 393      brought up to date first.  */
 394   volatile char pending_menu_activation;
 395
 396   /* Relief GCs, colors etc.  */
 397   struct relief
 398   {
 399     XGCValues *gc;
 400     unsigned long pixel;
 401     int allocated_p;
 402   }
 403   black_relief, white_relief;
 404
 405   /* The background for which the above relief GCs were set up.
 406      They are changed only when a different background is involved.  */
 407   unsigned long relief_background;
 408 };
 409
 410 extern struct w32_output w32term_display;
 411
 412 /* Return the X output data for frame F.  */
 413 #define FRAME_X_OUTPUT(f) ((f)->output_data.w32)
 414
 415 /* Return the window associated with the frame F.  */
 416 #define FRAME_W32_WINDOW(f) ((f)->output_data.w32->window_desc)
 417 #define FRAME_X_WINDOW(f) ((f)->output_data.w32->window_desc)
 418
 419 #define FRAME_FONT(f) ((f)->output_data.w32->font)
 420 #define FRAME_FONTSET(f) ((f)->output_data.w32->fontset)
 421 #define FRAME_BASELINE_OFFSET(f) ((f)->output_data.w32->baseline_offset)
 422
 423 #ifdef USE_FONT_BACKEND
 424 #define FRAME_FONT_OBJECT(f) ((f)->output_data.w32->fontp)
 425 #endif  /* USE_FONT_BACKEND */
 426
 427 /* This gives the w32_display_info structure for the display F is on.  */
 428 #define FRAME_W32_DISPLAY_INFO(f) (&one_w32_display_info)
 429 #define FRAME_X_DISPLAY_INFO(f) (&one_w32_display_info)
 430
 431 /* This is the `Display *' which frame F is on.  */
 432 #define FRAME_X_DISPLAY(f) (0)
 433
 434 /* This is the 'font_info *' which frame F has.  */
 435 #define FRAME_W32_FONT_TABLE(f) (FRAME_W32_DISPLAY_INFO (f)->font_table)
 436
 437 /* Value is the smallest width of any character in any font on frame F.  */
 438
 439 #define FRAME_SMALLEST_CHAR_WIDTH(F) \
 440      FRAME_W32_DISPLAY_INFO(F)->smallest_char_width
 441
 442 /* Value is the smallest height of any font on frame F.  */
 443
 444 #define FRAME_SMALLEST_FONT_HEIGHT(F) \
 445      FRAME_W32_DISPLAY_INFO(F)->smallest_font_height
 446
 447 /* Return a pointer to the image cache of frame F.  */
 448
 449 #define FRAME_X_IMAGE_CACHE(F) FRAME_W32_DISPLAY_INFO ((F))->image_cache
 450
 451 \f
 452 /* W32-specific scroll bar stuff.  */
 453
 454 /* We represent scroll bars as lisp vectors.  This allows us to place
 455    references to them in windows without worrying about whether we'll
 456    end up with windows referring to dead scroll bars; the garbage
 457    collector will free it when its time comes.
 458
 459    We use struct scroll_bar as a template for accessing fields of the
 460    vector.  */
 461
 462 struct scroll_bar {
 463
 464   /* These fields are shared by all vectors.  */
 465   EMACS_INT size_from_Lisp_Vector_struct;
 466   struct Lisp_Vector *next_from_Lisp_Vector_struct;
 467
 468   /* The window we're a scroll bar for.  */
 469   Lisp_Object window;
 470
 471   /* The next and previous in the chain of scroll bars in this frame.  */
 472   Lisp_Object next, prev;
 473
 474   /* The window representing this scroll bar.  Since this is a full
 475      32-bit quantity, we store it split into two 32-bit values.  */
 476   Lisp_Object w32_window_low, w32_window_high;
 477
 478   /* Same as above for the widget.  */
 479   Lisp_Object w32_widget_low, w32_widget_high;
 480
 481   /* The position and size of the scroll bar in pixels, relative to the
 482      frame.  */
 483   Lisp_Object top, left, width, height;
 484
 485   /* The starting and ending positions of the handle, relative to the
 486      handle area (i.e. zero is the top position, not
 487      SCROLL_BAR_TOP_BORDER).  If they're equal, that means the handle
 488      hasn't been drawn yet.
 489
 490      These are not actually the locations where the beginning and end
 491      are drawn; in order to keep handles from becoming invisible when
 492      editing large files, we establish a minimum height by always
 493      drawing handle bottoms VERTICAL_SCROLL_BAR_MIN_HANDLE pixels below
 494      where they would be normally; the bottom and top are in a
 495      different co-ordinate system.  */
 496   Lisp_Object start, end;
 497
 498   /* If the scroll bar handle is currently being dragged by the user,
 499      this is the number of pixels from the top of the handle to the
 500      place where the user grabbed it.  If the handle isn't currently
 501      being dragged, this is Qnil.  */
 502   Lisp_Object dragging;
 503
 504   /* t if the background of the fringe that is adjacent to a scroll
 505      bar is extended to the gap between the fringe and the bar.  */
 506   Lisp_Object fringe_extended_p;
 507 };
 508
 509 /* The number of elements a vector holding a struct scroll_bar needs.  */
 510 #define SCROLL_BAR_VEC_SIZE                                     \
 511   ((sizeof (struct scroll_bar)                                  \
 512     - sizeof (EMACS_INT) - sizeof (struct Lisp_Vector *))       \
 513    / sizeof (Lisp_Object))
 514
 515 /* Turning a lisp vector value into a pointer to a struct scroll_bar.  */
 516 #define XSCROLL_BAR(vec) ((struct scroll_bar *) XVECTOR (vec))
 517
 518
 519 /* Building a 32-bit C integer from two 16-bit lisp integers.  */
 520 #define SCROLL_BAR_PACK(low, high) (XINT (high) << 16 | XINT (low))
 521
 522 /* Setting two lisp integers to the low and high words of a 32-bit C int.  */
 523 #define SCROLL_BAR_UNPACK(low, high, int32) \
 524   (XSETINT ((low),   (int32)        & 0xffff), \
 525    XSETINT ((high), ((int32) >> 16) & 0xffff))
 526
 527
 528 /* Extract the window id of the scroll bar from a struct scroll_bar.  */
 529 #define SCROLL_BAR_W32_WINDOW(ptr) \
 530   ((Window) SCROLL_BAR_PACK ((ptr)->w32_window_low, (ptr)->w32_window_high))
 531
 532 /* Store a window id in a struct scroll_bar.  */
 533 #define SET_SCROLL_BAR_W32_WINDOW(ptr, id) \
 534   (SCROLL_BAR_UNPACK ((ptr)->w32_window_low, (ptr)->w32_window_high, (int) id))
 535
 536 /* Extract the X widget of the scroll bar from a struct scroll_bar.  */
 537 #define SCROLL_BAR_X_WIDGET(ptr) \
 538   ((Widget) SCROLL_BAR_PACK ((ptr)->x_widget_low, (ptr)->x_widget_high))
 539
 540 /* Store a widget id in a struct scroll_bar.  */
 541 #define SET_SCROLL_BAR_X_WIDGET(ptr, w) \
 542   (SCROLL_BAR_UNPACK ((ptr)->x_widget_low, (ptr)->x_widget_high, (int) w))
 543
 544 /* Return the inside width of a vertical scroll bar, given the outside
 545    width.  */
 546 #define VERTICAL_SCROLL_BAR_INSIDE_WIDTH(f,width) \
 547   ((width) \
 548    - VERTICAL_SCROLL_BAR_LEFT_BORDER \
 549    - VERTICAL_SCROLL_BAR_RIGHT_BORDER \
 550    - VERTICAL_SCROLL_BAR_WIDTH_TRIM * 2)
 551
 552 /* Return the length of the rectangle within which the top of the
 553    handle must stay.  This isn't equivalent to the inside height,
 554    because the scroll bar handle has a minimum height.
 555
 556    This is the real range of motion for the scroll bar, so when we're
 557    scaling buffer positions to scroll bar positions, we use this, not
 558    VERTICAL_SCROLL_BAR_INSIDE_HEIGHT.  */
 559 #define VERTICAL_SCROLL_BAR_TOP_RANGE(f,height) \
 560   (VERTICAL_SCROLL_BAR_INSIDE_HEIGHT (f, height) - VERTICAL_SCROLL_BAR_MIN_HANDLE)
 561
 562 /* Return the inside height of vertical scroll bar, given the outside
 563    height.  See VERTICAL_SCROLL_BAR_TOP_RANGE too.  */
 564 #define VERTICAL_SCROLL_BAR_INSIDE_HEIGHT(f,height) \
 565   ((height) - VERTICAL_SCROLL_BAR_TOP_BORDER - VERTICAL_SCROLL_BAR_BOTTOM_BORDER)
 566
 567
 568 /* Border widths for scroll bars.
 569
 570    Scroll bar windows don't have any borders; their border width is
 571    set to zero, and we redraw borders ourselves.  This makes the code
 572    a bit cleaner, since we don't have to convert between outside width
 573    (used when relating to the rest of the screen) and inside width
 574    (used when sizing and drawing the scroll bar window itself).
 575
 576    The handle moves up and down/back and forth in a rectangle inset
 577    from the edges of the scroll bar.  These are widths by which we
 578    inset the handle boundaries from the scroll bar edges.  */
 579 #define VERTICAL_SCROLL_BAR_LEFT_BORDER (0)
 580 #define VERTICAL_SCROLL_BAR_RIGHT_BORDER (0)
 581 #define VERTICAL_SCROLL_BAR_TOP_BORDER (vertical_scroll_bar_top_border)
 582 #define VERTICAL_SCROLL_BAR_BOTTOM_BORDER (vertical_scroll_bar_bottom_border)
 583
 584 /* Minimum lengths for scroll bar handles, in pixels.  */
 585 #define VERTICAL_SCROLL_BAR_MIN_HANDLE (vertical_scroll_bar_min_handle)
 586
 587 /* Trimming off a few pixels from each side prevents
 588    text from glomming up against the scroll bar */
 589 #define VERTICAL_SCROLL_BAR_WIDTH_TRIM (0)
 590
 591 \f
 592 extern void w32_fill_rect ();
 593 extern void w32_clear_window ();
 594
 595 #define w32_fill_area(f,hdc,pix,x,y,nx,ny) \
 596 do { \
 597     RECT rect; \
 598     rect.left = x; \
 599     rect.top = y; \
 600     rect.right = x + nx; \
 601     rect.bottom = y + ny; \
 602     w32_fill_rect (f,hdc,pix,&rect); \
 603 } while (0)
 604
 605 #define w32_clear_rect(f,hdc,lprect) \
 606   w32_fill_rect (f, hdc, FRAME_BACKGROUND_PIXEL (f), lprect)
 607
 608 #define w32_clear_area(f,hdc,px,py,nx,ny) \
 609   w32_fill_area (f, hdc, FRAME_BACKGROUND_PIXEL (f), px, py, nx, ny)
 610
 611 extern struct font_info *w32_load_font ();
 612 extern void w32_unload_font ();
 613
 614 /* Define for earlier versions of Visual C */
 615 #ifndef WM_MOUSEWHEEL
 616 #define WM_MOUSEWHEEL                  (WM_MOUSELAST + 1)
 617 #endif /* WM_MOUSEWHEEL */
 618 #ifndef MSH_MOUSEWHEEL
 619 #define MSH_MOUSEWHEEL                 "MSWHEEL_ROLLMSG"
 620 #endif /* MSH_MOUSEWHEEL */
 621 #ifndef WM_XBUTTONDOWN
 622 #define WM_XBUTTONDOWN                 (WM_MOUSEWHEEL + 1)
 623 #define WM_XBUTTONUP                   (WM_MOUSEWHEEL + 2)
 624 #endif /* WM_XBUTTONDOWN */
 625 #ifndef WM_MOUSEHWHEEL
 626 #define WM_MOUSEHWHEEL                 (WM_MOUSEWHEEL + 4)
 627 #endif /* WM_MOUSEHWHEEL  */
 628 #ifndef WM_APPCOMMAND
 629 #define WM_APPCOMMAND 0x319
 630 #define GET_APPCOMMAND_LPARAM(lParam)  (HIWORD(lParam) & 0x7fff)
 631 #endif
 632 #ifndef WM_UNICHAR
 633 #define WM_UNICHAR 0x109
 634 #endif
 635 #ifndef UNICODE_NOCHAR
 636 #define UNICODE_NOCHAR 0xFFFF
 637 #endif
 638
 639 #define WM_EMACS_START                 (WM_USER + 1)
 640 #define WM_EMACS_KILL                  (WM_EMACS_START + 0)
 641 #define WM_EMACS_CREATEWINDOW          (WM_EMACS_START + 1)
 642 #define WM_EMACS_DONE                  (WM_EMACS_START + 2)
 643 #define WM_EMACS_CREATESCROLLBAR       (WM_EMACS_START + 3)
 644 #define WM_EMACS_SHOWWINDOW            (WM_EMACS_START + 4)
 645 #define WM_EMACS_SETWINDOWPOS          (WM_EMACS_START + 5)
 646 #define WM_EMACS_DESTROYWINDOW         (WM_EMACS_START + 6)
 647 #define WM_EMACS_TRACKPOPUPMENU        (WM_EMACS_START + 7)
 648 #define WM_EMACS_SETFOCUS              (WM_EMACS_START + 8)
 649 #define WM_EMACS_SETFOREGROUND         (WM_EMACS_START + 9)
 650 #define WM_EMACS_SETLOCALE             (WM_EMACS_START + 10)
 651 #define WM_EMACS_SETKEYBOARDLAYOUT     (WM_EMACS_START + 11)
 652 #define WM_EMACS_REGISTER_HOT_KEY      (WM_EMACS_START + 12)
 653 #define WM_EMACS_UNREGISTER_HOT_KEY    (WM_EMACS_START + 13)
 654 #define WM_EMACS_TOGGLE_LOCK_KEY       (WM_EMACS_START + 14)
 655 #define WM_EMACS_TRACK_CARET           (WM_EMACS_START + 15)
 656 #define WM_EMACS_DESTROY_CARET         (WM_EMACS_START + 16)
 657 #define WM_EMACS_SHOW_CARET            (WM_EMACS_START + 17)
 658 #define WM_EMACS_HIDE_CARET            (WM_EMACS_START + 18)
 659 #define WM_EMACS_SETCURSOR             (WM_EMACS_START + 19)
 660 #define WM_EMACS_END                   (WM_EMACS_START + 20)
 661
 662 #define WND_FONTWIDTH_INDEX    (0)
 663 #define WND_LINEHEIGHT_INDEX   (4)
 664 #define WND_BORDER_INDEX       (8)
 665 #define WND_SCROLLBAR_INDEX    (12)
 666 #define WND_BACKGROUND_INDEX   (16)
 667 #define WND_LAST_INDEX         (20)
 668
 669 #define WND_EXTRA_BYTES     (WND_LAST_INDEX)
 670
 671 extern DWORD dwWindowsThreadId;
 672 extern HANDLE hWindowsThread;
 673 extern DWORD dwMainThreadId;
 674 extern HANDLE hMainThread;
 675
 676 typedef struct W32Msg {
 677     MSG msg;
 678     DWORD dwModifiers;
 679     RECT rect;
 680 } W32Msg;
 681
 682 /* Structure for recording message when input thread must return a
 683    result that depends on lisp thread to compute.  Lisp thread can
 684    complete deferred messages out of order.  */
 685 typedef struct deferred_msg
 686 {
 687   struct deferred_msg * next;
 688   W32Msg                w32msg;
 689   LRESULT               result;
 690   int                   completed;
 691 } deferred_msg;
 692
 693 extern CRITICAL_SECTION critsect;
 694
 695 extern void init_crit ();
 696 extern void delete_crit ();
 697
 698 extern void signal_quit ();
 699
 700 #define enter_crit() EnterCriticalSection (&critsect)
 701 #define leave_crit() LeaveCriticalSection (&critsect)
 702
 703 extern void select_palette (struct frame * f, HDC hdc);
 704 extern void deselect_palette (struct frame * f, HDC hdc);
 705 extern HDC get_frame_dc (struct frame * f);
 706 extern int release_frame_dc (struct frame * f, HDC hDC);
 707
 708 extern void drain_message_queue ();
 709
 710 extern BOOL get_next_msg ();
 711 extern BOOL post_msg ();
 712 extern void complete_deferred_msg (HWND hwnd, UINT msg, LRESULT result);
 713 extern void wait_for_sync ();
 714
 715 extern BOOL parse_button ();
 716
 717 extern void w32_sys_ring_bell (struct frame *f);
 718 extern void x_delete_display (struct w32_display_info *dpyinfo);
 719
 720 /* Keypad command key support.  W32 doesn't have virtual keys defined
 721    for the function keys on the keypad (they are mapped to the standard
 722    fuction keys), so we define our own.  */
 723 #define VK_NUMPAD_BEGIN         0x92
 724 #define VK_NUMPAD_CLEAR         (VK_NUMPAD_BEGIN + 0)
 725 #define VK_NUMPAD_ENTER         (VK_NUMPAD_BEGIN + 1)
 726 #define VK_NUMPAD_PRIOR         (VK_NUMPAD_BEGIN + 2)
 727 #define VK_NUMPAD_NEXT          (VK_NUMPAD_BEGIN + 3)
 728 #define VK_NUMPAD_END           (VK_NUMPAD_BEGIN + 4)
 729 #define VK_NUMPAD_HOME          (VK_NUMPAD_BEGIN + 5)
 730 #define VK_NUMPAD_LEFT          (VK_NUMPAD_BEGIN + 6)
 731 #define VK_NUMPAD_UP            (VK_NUMPAD_BEGIN + 7)
 732 #define VK_NUMPAD_RIGHT         (VK_NUMPAD_BEGIN + 8)
 733 #define VK_NUMPAD_DOWN          (VK_NUMPAD_BEGIN + 9)
 734 #define VK_NUMPAD_INSERT        (VK_NUMPAD_BEGIN + 10)
 735 #define VK_NUMPAD_DELETE        (VK_NUMPAD_BEGIN + 11)
 736
 737 #ifndef VK_LWIN
 738 /* Older compiler environments don't have these defined.  */
 739 #define VK_LWIN                 0x5B
 740 #define VK_RWIN                 0x5C
 741 #define VK_APPS                 0x5D
 742 #endif
 743
 744 /* Support for treating Windows and Apps keys as modifiers.  These
 745    constants must not overlap with any of the dwControlKeyState flags in
 746    KEY_EVENT_RECORD.  */
 747 #define LEFT_WIN_PRESSED       0x8000
 748 #define RIGHT_WIN_PRESSED      0x4000
 749 #define APPS_PRESSED           0x2000
 750
 751 /* When compiling on Windows 9x/ME and NT 3.x, the following are not defined
 752    (even though they are supported on 98 and ME.  */
 753 #ifndef WM_MOUSELEAVE
 754 #define WM_MOUSELEAVE 0x02A3
 755 #define TME_LEAVE 0x00000002;
 756
 757 typedef struct tagTRACKMOUSEEVENT
 758 {
 759   DWORD cbSize;
 760   DWORD dwFlags;
 761   HWND hwndTrack;
 762   DWORD dwHoverTime;
 763 } TRACKMOUSEEVENT;
 764 #endif
 765
 766 struct image;
 767 struct face;
 768
 769 XGCValues *XCreateGC (void *, Window, unsigned long, XGCValues *);
 770 struct frame * check_x_frame (Lisp_Object);
 771
 772 EXFUN (Fx_display_color_p, 1);
 773 EXFUN (Fx_display_grayscale_p, 1);
 774
 775 #define FONT_TYPE_FOR_UNIBYTE(font, ch)                 \
 776   ((font)->bdf ? BDF_1D_FONT : ANSI_FONT)
 777
 778 #define FONT_TYPE_FOR_MULTIBYTE(font, ch)               \
 779   (!(font)->bdf                                         \
 780    ? UNICODE_FONT                                       \
 781    : ((CHARSET_DIMENSION (CHAR_CHARSET ((ch))) == 1)    \
 782       ? BDF_1D_FONT : BDF_2D_FONT))
 783
 784 typedef DWORD (WINAPI * ClipboardSequence_Proc) ();
 785 typedef BOOL (WINAPI * AppendMenuW_Proc) (
 786     IN HMENU,
 787     IN UINT,
 788     IN UINT_PTR,
 789     IN LPCWSTR);
 790
 791 /* arch-tag: f201d05a-1240-4fc5-8ea4-ca24d4ee5671
 792    (do not change this comment) */