w32term.c 180 KB
Newer Older
1
/* Implementation of GUI terminal on the Microsoft W32 API.
2
   Copyright (C) 1989, 93, 94, 95, 96, 1997, 1998, 1999, 2000, 2001
3
   Free Software Foundation, Inc.
Geoff Voelker's avatar
Geoff Voelker committed
4 5 6 7 8 9 10 11 12 13 14 15 16 17

This file is part of GNU Emacs.

GNU Emacs is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.

GNU Emacs is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
18 19
along with GNU Emacs; see the file COPYING.  If not, write to
the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Karl Heuer's avatar
Karl Heuer committed
20
Boston, MA 02111-1307, USA.  */
Geoff Voelker's avatar
Geoff Voelker committed
21 22

#include <config.h>
23
#include <signal.h>
Geoff Voelker's avatar
Geoff Voelker committed
24
#include <stdio.h>
25
#include <stdlib.h>
Geoff Voelker's avatar
Geoff Voelker committed
26 27
#include "lisp.h"
#include "blockinput.h"
28
#include "w32term.h"
Geoff Voelker's avatar
Geoff Voelker committed
29 30 31 32 33 34 35 36 37

#include "systty.h"
#include "systime.h"

#include <ctype.h>
#include <errno.h>
#include <setjmp.h>
#include <sys/stat.h>

38 39 40 41
#include "charset.h"
#include "character.h"
#include "coding.h"
#include "ccl.h"
Geoff Voelker's avatar
Geoff Voelker committed
42 43
#include "frame.h"
#include "dispextern.h"
44
#include "fontset.h"
Geoff Voelker's avatar
Geoff Voelker committed
45 46 47 48 49 50 51
#include "termhooks.h"
#include "termopts.h"
#include "termchar.h"
#include "gnu.h"
#include "disptab.h"
#include "buffer.h"
#include "window.h"
52
#include "keyboard.h"
Geoff Voelker's avatar
Geoff Voelker committed
53
#include "intervals.h"
54 55 56 57 58 59 60
#include "process.h"
#include "atimer.h"
#include "keymap.h"

#include "w32heap.h"
#include "w32bdf.h"
#include <shellapi.h>
Geoff Voelker's avatar
Geoff Voelker committed
61

62 63 64
#define abs(x)	((x) < 0 ? -(x) : (x))


Kim F. Storm's avatar
Kim F. Storm committed
65
/* Fringe bitmaps.  */
66

Kim F. Storm's avatar
Kim F. Storm committed
67
static HBITMAP fringe_bmp[MAX_FRINGE_BITMAPS];
68

69
/* Non-nil means Emacs uses toolkit scroll bars.  */
70

71
Lisp_Object Vx_toolkit_scroll_bars;
72

73
/* Temporary variables for w32_read_socket.  */
74

75 76
static int last_mousemove_x = 0;
static int last_mousemove_y = 0;
77

78 79 80 81 82
/* Define GET_WHEEL_DELTA_WPARAM macro if system headers don't.  */
#ifndef GET_WHEEL_DELTA_WPARAM
#define GET_WHEEL_DELTA_WPARAM(wparam) ((short)HIWORD (wparam))
#endif

83 84 85 86 87
/* Non-zero means that a HELP_EVENT has been generated since Emacs
   start.  */

static int any_help_event_p;

88 89 90
/* Last window where we saw the mouse.  Used by mouse-autoselect-window.  */
static Lisp_Object last_window;

Geoff Voelker's avatar
Geoff Voelker committed
91 92
extern unsigned int msh_mousewheel;

Geoff Voelker's avatar
Geoff Voelker committed
93 94
extern void free_frame_menubar ();

95
extern int w32_codepage_for_font (char *fontname);
96
extern Cursor w32_load_cursor (LPCTSTR name);
97

98 99
extern glyph_metric *w32_BDF_TextMetric(bdffont *fontp,
					unsigned char *text, int dim);
Geoff Voelker's avatar
Geoff Voelker committed
100 101
extern Lisp_Object Vwindow_system;

Geoff Voelker's avatar
Geoff Voelker committed
102 103 104 105
#define x_any_window_to_frame x_window_to_frame
#define x_top_window_to_frame x_window_to_frame


106 107
/* This is display since w32 does not support multiple ones.  */
struct w32_display_info one_w32_display_info;
Andrew Innes's avatar
Andrew Innes committed
108
struct w32_display_info *x_display_list;
Geoff Voelker's avatar
Geoff Voelker committed
109 110

/* This is a list of cons cells, each of the form (NAME . FONT-LIST-CACHE),
111
   one for each element of w32_display_list and in the same order.
Geoff Voelker's avatar
Geoff Voelker committed
112 113
   NAME is the name of the frame.
   FONT-LIST-CACHE records previous values returned by x-list-fonts.  */
114
Lisp_Object w32_display_name_list;
Geoff Voelker's avatar
Geoff Voelker committed
115 116 117

/* Frame being updated by update_frame.  This is declared in term.c.
   This is set by update_begin and looked at by all the
118
   w32 functions.  It is zero while not inside an update.
119
   In that case, the w32 functions assume that `SELECTED_FRAME ()'
Geoff Voelker's avatar
Geoff Voelker committed
120 121 122 123 124 125
   is the frame to apply to.  */
extern struct frame *updating_frame;

/* This is a frame waiting to be autoraised, within w32_read_socket.  */
struct frame *pending_autoraise_frame;

126 127 128 129 130
/* The handle of the frame that currently owns the system caret.  */
HWND w32_system_caret_hwnd;
int w32_system_caret_height;
int w32_system_caret_x;
int w32_system_caret_y;
131
int w32_use_visible_system_caret;
132

133
/* Flag to enable Unicode output in case users wish to use programs
134 135
   like Twinbridge on '95 rather than installed system level support
   for Far East languages.  */
136
int w32_enable_unicode_output;
137

138 139
DWORD dwWindowsThreadId = 0;
HANDLE hWindowsThread = NULL;
Geoff Voelker's avatar
Geoff Voelker committed
140 141 142
DWORD dwMainThreadId = 0;
HANDLE hMainThread = NULL;

143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174
#ifndef SIF_ALL
/* These definitions are new with Windows 95. */
#define SIF_RANGE           0x0001
#define SIF_PAGE            0x0002
#define SIF_POS             0x0004
#define SIF_DISABLENOSCROLL 0x0008
#define SIF_TRACKPOS        0x0010
#define SIF_ALL             (SIF_RANGE | SIF_PAGE | SIF_POS | SIF_TRACKPOS)

typedef struct tagSCROLLINFO
{
    UINT    cbSize;
    UINT    fMask;
    int     nMin;
    int     nMax;
    UINT    nPage;
    int     nPos;
    int     nTrackPos;
}   SCROLLINFO, FAR *LPSCROLLINFO;
typedef SCROLLINFO CONST FAR *LPCSCROLLINFO;
#endif /* SIF_ALL */

/* Dynamic linking to new proportional scroll bar functions. */
int (PASCAL *pfnSetScrollInfo) (HWND hwnd, int fnBar, LPSCROLLINFO lpsi, BOOL fRedraw);
BOOL (PASCAL *pfnGetScrollInfo) (HWND hwnd, int fnBar, LPSCROLLINFO lpsi);

int vertical_scroll_bar_min_handle;
int vertical_scroll_bar_top_border;
int vertical_scroll_bar_bottom_border;

int last_scroll_bar_drag_pos;

Geoff Voelker's avatar
Geoff Voelker committed
175 176 177
/* Mouse movement. */

/* Where the mouse was last time we reported a mouse event.  */
178

Geoff Voelker's avatar
Geoff Voelker committed
179
static RECT last_mouse_glyph;
180
static Lisp_Object last_mouse_press_frame;
Geoff Voelker's avatar
Geoff Voelker committed
181

182
Lisp_Object Vw32_num_mouse_buttons;
Geoff Voelker's avatar
Geoff Voelker committed
183

184
Lisp_Object Vw32_swap_mouse_buttons;
Geoff Voelker's avatar
Geoff Voelker committed
185

186 187 188 189 190 191
/* Control whether x_raise_frame also sets input focus.  */
Lisp_Object Vw32_grab_focus_on_raise;

/* Control whether Caps Lock affects non-ascii characters.  */
Lisp_Object Vw32_capslock_is_shiftlock;

192 193 194
/* Control whether right-alt and left-ctrl should be recognized as AltGr.  */
Lisp_Object Vw32_recognize_altgr;

Geoff Voelker's avatar
Geoff Voelker committed
195 196 197
/* The scroll bar in which the last motion event occurred.

   If the last motion event occurred in a scroll bar, we set this
198
   so w32_mouse_position can know whether to report a scroll bar motion or
Geoff Voelker's avatar
Geoff Voelker committed
199 200 201
   an ordinary motion.

   If the last motion event didn't occur in a scroll bar, we set this
202
   to Qnil, to tell w32_mouse_position to return an ordinary motion event.  */
203 204
static Lisp_Object last_mouse_scroll_bar;
static int last_mouse_scroll_bar_pos;
Geoff Voelker's avatar
Geoff Voelker committed
205

206
/* This is a hack.  We would really prefer that w32_mouse_position would
Geoff Voelker's avatar
Geoff Voelker committed
207
   return the time associated with the position it returns, but there
208
   doesn't seem to be any way to wrest the time-stamp from the server
Geoff Voelker's avatar
Geoff Voelker committed
209 210 211 212
   along with the position query.  So, we just keep track of the time
   of the last movement we received, and return that in hopes that
   it's somewhat accurate.  */

213 214 215 216
static Time last_mouse_movement_time;

/* Incremented by w32_read_socket whenever it really tries to read
   events.  */
217

Geoff Voelker's avatar
Geoff Voelker committed
218 219 220 221 222 223 224 225 226 227
#ifdef __STDC__
static int volatile input_signal_count;
#else
static int input_signal_count;
#endif

extern Lisp_Object Vcommand_line_args, Vsystem_name;

extern Lisp_Object Qface, Qmouse_face;

228
#ifndef USE_CRT_DLL
Geoff Voelker's avatar
Geoff Voelker committed
229
extern int errno;
230
#endif
Geoff Voelker's avatar
Geoff Voelker committed
231 232

/* A mask of extra modifier bits to put into every keyboard char.  */
233

234
extern EMACS_INT extra_keyboard_modifiers;
Geoff Voelker's avatar
Geoff Voelker committed
235

236
static void x_update_window_end P_ ((struct window *, int, int));
237 238 239
void w32_delete_display P_ ((struct w32_display_info *));
static void w32_handle_tool_bar_click P_ ((struct frame *,
                                          struct input_event *));
240
void w32_define_cursor P_ ((Window, Cursor));
241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258

void x_lower_frame P_ ((struct frame *));
void x_scroll_bar_clear P_ ((struct frame *));
void x_wm_set_size_hint P_ ((struct frame *, long, int));
void x_raise_frame P_ ((struct frame *));
void x_set_window_size P_ ((struct frame *, int, int, int));
void x_wm_set_window_state P_ ((struct frame *, int));
void x_wm_set_icon_pixmap P_ ((struct frame *, int));
void w32_initialize P_ ((void));
static void x_font_min_bounds P_ ((XFontStruct *, int *, int *));
int x_compute_min_glyph_bounds P_ ((struct frame *));
static void x_update_end P_ ((struct frame *));
static void w32_frame_up_to_date P_ ((struct frame *));
static void w32_set_terminal_modes P_ ((void));
static void w32_reset_terminal_modes P_ ((void));
static void x_clear_frame P_ ((void));
static void frame_highlight P_ ((struct frame *));
static void frame_unhighlight P_ ((struct frame *));
259 260
static void x_new_focus_frame P_ ((struct w32_display_info *,
				   struct frame *));
261 262 263
static void w32_frame_rehighlight P_ ((struct frame *));
static void x_frame_rehighlight P_ ((struct w32_display_info *));
static void x_draw_hollow_cursor P_ ((struct window *, struct glyph_row *));
264 265
static void x_draw_bar_cursor P_ ((struct window *, struct glyph_row *, int,
				   enum text_cursor_kinds));
266
static void w32_clip_to_row P_ ((struct window *, struct glyph_row *, HDC));
267

Geoff Voelker's avatar
Geoff Voelker committed
268 269 270
static Lisp_Object Qvendor_specific_keysyms;


271 272 273 274
/***********************************************************************
			      Debugging
 ***********************************************************************/

Geoff Voelker's avatar
Geoff Voelker committed
275
#if 0
276 277 278

/* This is a function useful for recording debugging information about
   the sequence of occurrences in this file.  */
Geoff Voelker's avatar
Geoff Voelker committed
279

280
struct record
Geoff Voelker's avatar
Geoff Voelker committed
281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303
{
  char *locus;
  int type;
};

struct record event_record[100];

int event_record_index;

record_event (locus, type)
     char *locus;
     int type;
{
  if (event_record_index == sizeof (event_record) / sizeof (struct record))
    event_record_index = 0;

  event_record[event_record_index].locus = locus;
  event_record[event_record_index].type = type;
  event_record_index++;
}

#endif /* 0 */

304

305 306 307
void
XChangeGC (void * ignore, XGCValues* gc, unsigned long mask,
	   XGCValues *xgcv)
308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327
{
  if (mask & GCForeground)
    gc->foreground = xgcv->foreground;
  if (mask & GCBackground)
    gc->background = xgcv->background;
  if (mask & GCFont)
    gc->font = xgcv->font;
}

XGCValues *XCreateGC (void * ignore, Window window, unsigned long mask,
                      XGCValues *xgcv)
{
  XGCValues *gc = (XGCValues *) xmalloc (sizeof (XGCValues));
  bzero (gc, sizeof (XGCValues));

  XChangeGC (ignore, gc, mask, xgcv);

  return gc;
}

328 329
void
XGetGCValues (void* ignore, XGCValues *gc,
330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370
                   unsigned long mask, XGCValues *xgcv)
{
  XChangeGC (ignore, xgcv, mask, gc);
}

static void
w32_set_clip_rectangle (HDC hdc, RECT *rect)
{
  if (rect)
    {
      HRGN clip_region = CreateRectRgnIndirect (rect);
      SelectClipRgn (hdc, clip_region);
      DeleteObject (clip_region);
    }
  else
    SelectClipRgn (hdc, NULL);
}


/* Draw a hollow rectangle at the specified position.  */
void
w32_draw_rectangle (HDC hdc, XGCValues *gc, int x, int y,
                    int width, int height)
{
  HBRUSH hb, oldhb;
  HPEN hp, oldhp;

  hb = CreateSolidBrush (gc->background);
  hp = CreatePen (PS_SOLID, 0, gc->foreground);
  oldhb = SelectObject (hdc, hb);
  oldhp = SelectObject (hdc, hp);

  Rectangle (hdc, x, y, x + width, y + height);

  SelectObject (hdc, oldhb);
  SelectObject (hdc, oldhp);
  DeleteObject (hb);
  DeleteObject (hp);
}

/* Draw a filled rectangle at the specified position. */
371
void
372
w32_fill_rect (f, hdc, pix, lprect)
Geoff Voelker's avatar
Geoff Voelker committed
373
     FRAME_PTR f;
374
     HDC hdc;
Geoff Voelker's avatar
Geoff Voelker committed
375 376 377 378
     COLORREF pix;
     RECT * lprect;
{
  HBRUSH hb;
379

Geoff Voelker's avatar
Geoff Voelker committed
380 381 382 383 384
  hb = CreateSolidBrush (pix);
  FillRect (hdc, lprect, hb);
  DeleteObject (hb);
}

385
void
386
w32_clear_window (f)
Geoff Voelker's avatar
Geoff Voelker committed
387 388 389
     FRAME_PTR f;
{
  RECT rect;
390
  HDC hdc = get_frame_dc (f);
Geoff Voelker's avatar
Geoff Voelker committed
391

392 393 394 395 396 397 398 399 400
  /* Under certain conditions, this can be called at startup with
     a console frame pointer before the GUI frame is created. An HDC
     of 0 indicates this. */
  if (hdc)
    {
      GetClientRect (FRAME_W32_WINDOW (f), &rect);
      w32_clear_rect (f, hdc, &rect);
    }

401
  release_frame_dc (f, hdc);
Geoff Voelker's avatar
Geoff Voelker committed
402 403 404
}


405 406 407
/***********************************************************************
		    Starting and ending an update
 ***********************************************************************/
408

409 410 411
/* Start an update of frame F.  This function is installed as a hook
   for update_begin, i.e. it is called when update_begin is called.
   This function is called prior to calls to x_update_window_begin for
412
   each window being updated.  */
Geoff Voelker's avatar
Geoff Voelker committed
413

414
static void
415
x_update_begin (f)
Geoff Voelker's avatar
Geoff Voelker committed
416 417
     struct frame *f;
{
418 419
  struct w32_display_info *display_info = FRAME_W32_DISPLAY_INFO (f);

Andrew Innes's avatar
Andrew Innes committed
420 421 422
  if (! FRAME_W32_P (f))
    return;

423 424 425 426 427 428 429
  /* Regenerate display palette before drawing if list of requested
     colors has changed. */
  if (display_info->regen_palette)
  {
    w32_regenerate_palette (f);
    display_info->regen_palette = FALSE;
  }
430
}
Geoff Voelker's avatar
Geoff Voelker committed
431

432 433 434 435 436 437 438 439 440 441 442 443

/* Start update of window W.  Set the global variable updated_window
   to the window being updated and set output_cursor to the cursor
   position of W.  */

static void
x_update_window_begin (w)
     struct window *w;
{
  struct frame *f = XFRAME (WINDOW_FRAME (w));
  struct w32_display_info *display_info = FRAME_W32_DISPLAY_INFO (f);

444
  /* Hide the system caret during an update.  */
445 446 447 448
  if (w32_use_visible_system_caret && w32_system_caret_hwnd)
    {
      SendMessage (w32_system_caret_hwnd, WM_EMACS_HIDE_CARET, 0, 0);
    }
449

450 451
  updated_window = w;
  set_output_cursor (&w->cursor);
Geoff Voelker's avatar
Geoff Voelker committed
452 453 454

  BLOCK_INPUT;

455
  if (f == display_info->mouse_face_mouse_frame)
Geoff Voelker's avatar
Geoff Voelker committed
456 457
    {
      /* Don't do highlighting for mouse motion during the update.  */
458
      display_info->mouse_face_defer = 1;
Geoff Voelker's avatar
Geoff Voelker committed
459

460 461
      /* If F needs to be redrawn, simply forget about any prior mouse
	 highlighting.  */
Geoff Voelker's avatar
Geoff Voelker committed
462
      if (FRAME_GARBAGED_P (f))
463 464
	display_info->mouse_face_window = Qnil;

465 466 467 468 469 470
#if 0 /* Rows in a current matrix containing glyphs in mouse-face have
	 their mouse_face_p flag set, which means that they are always
	 unequal to rows in a desired matrix which never have that
	 flag set.  So, rows containing mouse-face glyphs are never
	 scrolled, and we don't have to switch the mouse highlight off
	 here to prevent it from being scrolled.  */
471

472 473 474 475 476 477 478
      /* Can we tell that this update does not affect the window
	 where the mouse highlight is?  If so, no need to turn off.
	 Likewise, don't do anything if the frame is garbaged;
	 in that case, the frame's current matrix that we would use
	 is all wrong, and we will redisplay that line anyway.  */
      if (!NILP (display_info->mouse_face_window)
	  && w == XWINDOW (display_info->mouse_face_window))
Geoff Voelker's avatar
Geoff Voelker committed
479
	{
480
	  int i;
Geoff Voelker's avatar
Geoff Voelker committed
481

482 483
          for (i = 0; i < w->desired_matrix->nrows; ++i)
	    if (MATRIX_ROW_ENABLED_P (w->desired_matrix, i))
Geoff Voelker's avatar
Geoff Voelker committed
484 485
	      break;

486 487
	  if (i < w->desired_matrix->nrows)
	    clear_mouse_face (display_info);
Geoff Voelker's avatar
Geoff Voelker committed
488
	}
489
#endif /* 0 */
Geoff Voelker's avatar
Geoff Voelker committed
490 491 492 493 494
    }

  UNBLOCK_INPUT;
}

495
/* Draw a vertical window border from (x,y0) to (x,y1)  */
496

497
static void
498
w32_draw_vertical_window_border (w, x, y0, y1)
499
     struct window *w;
500
     int x, y0, y1;
Geoff Voelker's avatar
Geoff Voelker committed
501
{
502
  struct frame *f = XFRAME (WINDOW_FRAME (w));
503 504
  RECT r;
  HDC hdc;
505

506 507 508 509
  r.left = x;
  r.right = x + 1;
  r.top = y0;
  r.bottom = y1;
510

511 512 513
  hdc = get_frame_dc (f);
  w32_fill_rect (f, hdc, FRAME_FOREGROUND_PIXEL (f), &r);
  release_frame_dc (f, hdc);
514
}
Geoff Voelker's avatar
Geoff Voelker committed
515

516

517 518 519 520 521 522 523 524 525 526 527 528
/* End update of window W (which is equal to updated_window).

   Draw vertical borders between horizontally adjacent windows, and
   display W's cursor if CURSOR_ON_P is non-zero.

   MOUSE_FACE_OVERWRITTEN_P non-zero means that some row containing
   glyphs in mouse-face were overwritten.  In that case we have to
   make sure that the mouse-highlight is properly redrawn.

   W may be a menu bar pseudo-window in case we don't have X toolkit
   support. Such windows don't have a cursor, so don't display it
   here. */
529 530

static void
531
x_update_window_end (w, cursor_on_p, mouse_face_overwritten_p)
532
     struct window *w;
533
     int cursor_on_p, mouse_face_overwritten_p;
534
{
535
  struct w32_display_info *dpyinfo = FRAME_W32_DISPLAY_INFO (XFRAME (w->frame));
536

537 538 539
  if (!w->pseudo_window_p)
    {
      BLOCK_INPUT;
540

541
      if (cursor_on_p)
542 543 544
	display_and_set_cursor (w, 1, output_cursor.hpos,
				output_cursor.vpos,
				output_cursor.x, output_cursor.y);
545

546 547 548
      x_draw_vertical_border (w);
      UNBLOCK_INPUT;
    }
549 550 551 552 553 554 555 556 557 558

  /* If a row with mouse-face was overwritten, arrange for
     XTframe_up_to_date to redisplay the mouse highlight.  */
  if (mouse_face_overwritten_p)
    {
      dpyinfo->mouse_face_beg_row = dpyinfo->mouse_face_beg_col = -1;
      dpyinfo->mouse_face_end_row = dpyinfo->mouse_face_end_col = -1;
      dpyinfo->mouse_face_window = Qnil;
    }

559 560 561
  /* Unhide the caret.  This won't actually show the cursor, unless it
     was visible before the corresponding call to HideCaret in
     x_update_window_begin.  */
562 563 564 565
  if (w32_use_visible_system_caret && w32_system_caret_hwnd)
    {
      SendMessage (w32_system_caret_hwnd, WM_EMACS_SHOW_CARET, 0, 0);
    }
566

567 568 569
  updated_window = NULL;
}

570 571 572 573

/* End update of frame F.  This function is installed as a hook in
   update_end.  */

574 575 576 577
static void
x_update_end (f)
     struct frame *f;
{
Andrew Innes's avatar
Andrew Innes committed
578 579 580
  if (! FRAME_W32_P (f))
    return;

581 582
  /* Mouse highlight may be displayed again.  */
  FRAME_W32_DISPLAY_INFO (f)->mouse_face_defer = 0;
Geoff Voelker's avatar
Geoff Voelker committed
583 584
}

585

586 587 588
/* This function is called from various places in xdisp.c whenever a
   complete update has been performed.  The global variable
   updated_window is not available here.  */
Geoff Voelker's avatar
Geoff Voelker committed
589

590
static void
591
w32_frame_up_to_date (f)
592
     struct frame *f;
Geoff Voelker's avatar
Geoff Voelker committed
593
{
594
  if (FRAME_W32_P (f))
Geoff Voelker's avatar
Geoff Voelker committed
595
    {
596
      struct w32_display_info *dpyinfo = FRAME_W32_DISPLAY_INFO (f);
597

598 599 600 601 602 603 604 605 606 607 608
      if (dpyinfo->mouse_face_deferred_gc
	  || f == dpyinfo->mouse_face_mouse_frame)
	{
	  BLOCK_INPUT;
	  if (dpyinfo->mouse_face_mouse_frame)
	    note_mouse_highlight (dpyinfo->mouse_face_mouse_frame,
				  dpyinfo->mouse_face_mouse_x,
				  dpyinfo->mouse_face_mouse_y);
	  dpyinfo->mouse_face_deferred_gc = 0;
	  UNBLOCK_INPUT;
	}
Geoff Voelker's avatar
Geoff Voelker committed
609 610
    }
}
611 612 613


/* Draw truncation mark bitmaps, continuation mark bitmaps, overlay
Kim F. Storm's avatar
Kim F. Storm committed
614
   arrow bitmaps, or clear the fringes if no bitmaps are required
615
   before DESIRED_ROW is made current.  The window being updated is
616
   found in updated_window.  This function is called from
617 618 619 620 621 622 623 624
   update_window_line only if it is known that there are differences
   between bitmaps to be drawn between current row and DESIRED_ROW.  */

static void
x_after_update_window_line (desired_row)
     struct glyph_row *desired_row;
{
  struct window *w = updated_window;
625 626 627
  struct frame *f;
  int width, height;

628
  xassert (w);
629

630 631 632
  if (!desired_row->mode_line_p && !w->pseudo_window_p)
    {
      BLOCK_INPUT;
Kim F. Storm's avatar
Kim F. Storm committed
633
      draw_row_fringe_bitmaps (w, desired_row);
634 635
      UNBLOCK_INPUT;
    }
636

637 638 639 640 641 642 643 644 645 646 647 648 649 650 651
  /* When a window has disappeared, make sure that no rest of
     full-width rows stays visible in the internal border.  Could
     check here if updated_window is the leftmost/rightmost window,
     but I guess it's not worth doing since vertically split windows
     are almost never used, internal border is rarely set, and the
     overhead is very small.  */
  if (windows_or_buffers_changed
      && desired_row->full_width_p
      && (f = XFRAME (w->frame),
	  width = FRAME_INTERNAL_BORDER_WIDTH (f),
	  width != 0)
      && (height = desired_row->visible_height,
	  height > 0))
    {
      int y = WINDOW_TO_FRAME_PIXEL_Y (w, max (0, desired_row->y));
652

653 654 655 656 657 658 659 660 661
      /* Internal border is drawn below the tool bar.  */
      if (WINDOWP (f->tool_bar_window)
	  && w == XWINDOW (f->tool_bar_window))
	y -= width;

      BLOCK_INPUT;
      {
	HDC hdc = get_frame_dc (f);
	w32_clear_area (f, hdc, 0, y, width, height);
662
	w32_clear_area (f, hdc, FRAME_PIXEL_WIDTH (f) - width,
663 664 665
			y, width, height);
	release_frame_dc (f, hdc);
      }
666 667 668 669 670
      UNBLOCK_INPUT;
    }
}


Kim F. Storm's avatar
Kim F. Storm committed
671
/* Draw the bitmap WHICH in one of the left or right fringes of
672 673 674 675 676
   window W.  ROW is the glyph row for which to display the bitmap; it
   determines the vertical position at which the bitmap has to be
   drawn.  */

static void
Kim F. Storm's avatar
Kim F. Storm committed
677
w32_draw_fringe_bitmap (w, row, p)
678 679
     struct window *w;
     struct glyph_row *row;
Kim F. Storm's avatar
Kim F. Storm committed
680
     struct draw_fringe_bitmap_params *p;
681 682
{
  struct frame *f = XFRAME (WINDOW_FRAME (w));
Kim F. Storm's avatar
Kim F. Storm committed
683 684 685 686
  HDC hdc;
  struct face *face = p->face;

  hdc = get_frame_dc (f);
687 688

  /* Must clip because of partially visible lines.  */
689
  w32_clip_to_row (w, row, hdc);
690

Kim F. Storm's avatar
Kim F. Storm committed
691
  if (p->bx >= 0)
692
    {
693
      w32_fill_area (f, hdc, face->background,
Kim F. Storm's avatar
Kim F. Storm committed
694
		     p->bx, p->by, p->nx, p->ny);
695 696
    }

Kim F. Storm's avatar
Kim F. Storm committed
697 698 699 700 701
  if (p->which != NO_FRINGE_BITMAP)
    {
      HBITMAP pixmap = fringe_bmp[p->which];
      HDC compat_hdc;
      HANDLE horig_obj;
702

Kim F. Storm's avatar
Kim F. Storm committed
703 704
      compat_hdc = CreateCompatibleDC (hdc);
      SaveDC (hdc);
705

Kim F. Storm's avatar
Kim F. Storm committed
706 707 708
      horig_obj = SelectObject (compat_hdc, pixmap);
      SetTextColor (hdc, face->background);
      SetBkColor (hdc, face->foreground);
709

Kim F. Storm's avatar
Kim F. Storm committed
710 711 712
      BitBlt (hdc, p->x, p->y, p->wd, p->h,
	      compat_hdc, 0, p->dh,
	      SRCCOPY);
713

Kim F. Storm's avatar
Kim F. Storm committed
714 715 716
      SelectObject (compat_hdc, horig_obj);
      DeleteDC (compat_hdc);
      RestoreDC (hdc, -1);
717
    }
718

Kim F. Storm's avatar
Kim F. Storm committed
719
  w32_set_clip_rectangle (hdc, NULL);
720 721 722 723

  release_frame_dc (f, hdc);
}

Geoff Voelker's avatar
Geoff Voelker committed
724

725 726 727 728
/* This is called when starting Emacs and when restarting after
   suspend.  When starting Emacs, no window is mapped.  And nothing
   must be done to Emacs's own window if it is suspended (though that
   rarely happens).  */
Geoff Voelker's avatar
Geoff Voelker committed
729

730 731
static void
w32_set_terminal_modes (void)
Geoff Voelker's avatar
Geoff Voelker committed
732 733 734
{
}

735 736
/* This is called when exiting or suspending Emacs. Exiting will make
   the W32 windows go away, and suspending requires no action. */
Geoff Voelker's avatar
Geoff Voelker committed
737

738 739
static void
w32_reset_terminal_modes (void)
Geoff Voelker's avatar
Geoff Voelker committed
740 741
{
}
742

743

744

745 746 747 748 749 750
/***********************************************************************
			   Display Iterator
 ***********************************************************************/

/* Function prototypes of this page.  */

751
static XCharStruct *w32_per_char_metric P_ ((XFontStruct *,
752
                                             wchar_t *, int));
753 754
static int w32_encode_char P_ ((int, wchar_t *, struct font_info *,
				struct charset *, int *));
755

756 757 758

/* Get metrics of character CHAR2B in FONT.  Value is always non-null.
   If CHAR2B is not contained in FONT, the font's default character
759
   metric is returned. */
760

761 762
static int
w32_bdf_per_char_metric (font, char2b, dim, pcm)
763 764 765
     XFontStruct *font;
     wchar_t *char2b;
     int dim;
766
     XCharStruct * pcm;
767 768 769 770 771
{
  glyph_metric * bdf_metric;
  char buf[2];

  if (dim == 1)
772
    buf[0] = (char)(*char2b);
773 774
  else
    {
775 776
      buf[0] = XCHAR2B_BYTE1 (char2b);
      buf[1] = XCHAR2B_BYTE2 (char2b);
777 778 779 780 781 782 783 784 785 786 787
    }

  bdf_metric = w32_BDF_TextMetric (font->bdf, buf, dim);

  if (bdf_metric)
    {
      pcm->width = bdf_metric->dwidth;
      pcm->lbearing = bdf_metric->bbox;
      pcm->rbearing = bdf_metric->dwidth
                    - (bdf_metric->bbox + bdf_metric->bbw);
      pcm->ascent = bdf_metric->bboy + bdf_metric->bbh;
788
      pcm->descent = -bdf_metric->bboy;
789 790

      return 1;
791
    }
792
  return 0;
793 794 795
}


796 797
static int
w32_native_per_char_metric (font, char2b, font_type, pcm)
798 799
     XFontStruct *font;
     wchar_t *char2b;
800
     enum w32_char_font_type font_type;
801
     XCharStruct * pcm;
802
{
803 804 805
  HDC hdc = GetDC (NULL);
  HFONT old_font;
  BOOL retval = FALSE;
806

807
  xassert (font && char2b);
808 809
  xassert (font->hfont);
  xassert (font_type == UNICODE_FONT || font_type == ANSI_FONT);
810

811
  old_font = SelectObject (hdc, font->hfont);
812

813
  if ((font->tm.tmPitchAndFamily & TMPF_TRUETYPE) != 0)
814
    {
815 816 817 818
      ABC char_widths;

      if (font_type == UNICODE_FONT)
	retval = GetCharABCWidthsW (hdc, *char2b, *char2b, &char_widths);
819
      else
820 821 822 823
	retval = GetCharABCWidthsA (hdc, *char2b, *char2b, &char_widths);

      if (retval)
	{
824 825 826 827
#if 0
	  /* Disabled until we can find a way to get the right results
	     on all versions of Windows.  */

828 829 830 831
	  /* Don't trust the ABC widths.  For synthesized fonts they are
	     wrong, and so is the result of GetCharWidth()!  */
	  int real_width;
	  GetCharWidth (hdc, *char2b, *char2b, &real_width);
832
#endif
833
	  pcm->width = char_widths.abcA + char_widths.abcB + char_widths.abcC;
834
#if 0
835 836 837 838
	  /* As far as I can tell, this is the best way to determine what
	     ExtTextOut will do with the broken font.  */
	  if (pcm->width != real_width)
	    pcm->width = (pcm->width + real_width) / 2;
839
#endif
840
	  pcm->lbearing = char_widths.abcA;
841
	  pcm->rbearing = char_widths.abcA + char_widths.abcB;
842 843
	  pcm->ascent = FONT_BASE (font);
	  pcm->descent = FONT_DESCENT (font);
844
	}
845
    }
846 847

  if (!retval)
848
    {
849 850 851 852 853 854
      /* Either font is not a True-type font, or GetCharABCWidthsW
	 failed (it is not supported on Windows 9x for instance), so we
	 can't determine the full info we would like.  All is not lost
	 though - we can call GetTextExtentPoint32 to get rbearing and
	 deduce width based on the font's per-string overhang.  lbearing
	 is assumed to be zero.  */
855 856 857 858 859

      /* TODO: Some Thai characters (and other composites if Windows
         supports them) do have lbearing, and report their total width
         as zero. Need some way of handling them when
         GetCharABCWidthsW fails. */
860 861 862 863 864 865
      SIZE sz;

      if (font_type == UNICODE_FONT)
	retval = GetTextExtentPoint32W (hdc, char2b, 1, &sz);
      else
	retval = GetTextExtentPoint32A (hdc, (char*)char2b, 1, &sz);
866 867

      if (retval)
868
	{
869 870
	  pcm->width = sz.cx - font->tm.tmOverhang;
	  pcm->rbearing = sz.cx;
871
	  pcm->lbearing = 0;
872 873
	  pcm->ascent = FONT_BASE (font);
	  pcm->descent = FONT_DESCENT (font);
874
	}
875 876 877
    }


878 879
  if (pcm->width == 0 && (pcm->rbearing - pcm->lbearing) == 0)
    {
880
      retval = FALSE;
881 882
    }

883 884 885 886 887 888 889 890 891 892 893
  SelectObject (hdc, old_font);
  ReleaseDC (NULL, hdc);

  return retval;
}


static XCharStruct *
w32_per_char_metric (font, char2b, font_type)
     XFontStruct *font;
     wchar_t *char2b;
894
     int /* enum w32_char_font_type */ font_type;
895 896 897 898 899 900
{
  /* The result metric information.  */
  XCharStruct *pcm;
  BOOL retval;

  xassert (font && char2b);
901 902 903 904 905 906 907 908 909 910 911

  /* TODO: This function is currently called through the RIF, and in
     some cases font_type is UNKNOWN_FONT. We currently allow the
     cached metrics to be used, which seems to work, but in cases
     where font_type is UNKNOWN_FONT, we probably haven't encoded
     char2b appropriately. All callers need checking to see what they
     are passing.  This is most likely to affect variable width fonts
     outside the Latin-1 range, particularly in languages like Thai
     that rely on rbearing and lbearing to provide composition. I
     don't think that is working currently anyway, but we don't seem
     to have anyone testing such languages on Windows.  */
Jason Rumney's avatar
Jason Rumney committed
912

913
  /* Handle the common cases quickly.  */
914
  if (!font->bdf && font->per_char == NULL)
915 916
    /* TODO: determine whether char2b exists in font?  */
    return &font->max_bounds;
917
  else if (!font->bdf && *char2b < 128)
918 919
    return &font->per_char[*char2b];

920 921
  xassert (font_type != UNKNOWN_FONT);

922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946
  pcm = &font->scratch;

  if (font_type == BDF_1D_FONT)
    retval = w32_bdf_per_char_metric (font, char2b, 1, pcm);
  else if (font_type == BDF_2D_FONT)
    retval = w32_bdf_per_char_metric (font, char2b, 2, pcm);
  else
    retval = w32_native_per_char_metric (font, char2b, font_type, pcm);

  if (retval)
    return pcm;

  return NULL;
}

void
w32_cache_char_metrics (font)
     XFontStruct *font;
{
  wchar_t char2b = L'x';

  /* Cache char metrics for the common cases.  */
  if (font->bdf)
    {
      /* TODO: determine whether font is fixed-pitch.  */
947 948 949 950 951 952 953 954 955 956
      if (!w32_bdf_per_char_metric (font, &char2b, 1, &font->max_bounds))
        {
          /* Use the font width and height as max bounds, as not all BDF
             fonts contain the letter 'x'. */
          font->max_bounds.width = FONT_MAX_WIDTH (font);
          font->max_bounds.lbearing = -font->bdf->llx;
          font->max_bounds.rbearing = FONT_MAX_WIDTH (font) - font->bdf->urx;
          font->max_bounds.ascent = FONT_BASE (font);
          font->max_bounds.descent = FONT_DESCENT (font);
        }
957 958 959
    }
  else
    {
960 961 962 963
      if (((font->tm.tmPitchAndFamily & TMPF_FIXED_PITCH) != 0)
          /* Some fonts (eg DBCS fonts) are marked as fixed width even
             though they contain characters of different widths. */
          || (font->tm.tmMaxCharWidth != font->tm.tmAveCharWidth))
964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983
	{
	  /* Font is not fixed pitch, so cache per_char info for the
             ASCII characters.  It would be much more work, and probably
             not worth it, to cache other chars, since we may change
             between using Unicode and ANSI text drawing functions at
             run-time.  */
	  int i;

	  font->per_char = xmalloc (128 * sizeof(XCharStruct));
	  for (i = 0; i < 128; i++)
	    {
	      char2b = i;
	      w32_native_per_char_metric (font, &char2b, ANSI_FONT,
					  &font->per_char[i]);
	    }
	}
      else
	w32_native_per_char_metric (font, &char2b, ANSI_FONT,
				    &font->max_bounds);
    }
984 985 986
}


987 988 989 990 991 992 993
/* Determine if a font is double byte. */
int w32_font_is_double_byte (XFontStruct *font)
{
  return font->double_byte_p;
}


994
static BOOL
995 996 997 998 999 1000 1001 1002 1003
w32_use_unicode_for_codepage (codepage)
     int codepage;
{
  /* If the current codepage is supported, use Unicode for output. */
  return (w32_enable_unicode_output
          && codepage != CP_8BIT
          && (codepage == CP_UNICODE || IsValidCodePage (codepage)));
}

1004 1005 1006
/* Encode CHAR2B using encoding information from FONT_INFO.  CHAR2B is
   the two-byte form of C.  Encoding is returned in *CHAR2B.  */

1007
static int /* enum w32_char_font_type */
1008
w32_encode_char (c, char2b, font_info, charset, two_byte_p)
1009 1010 1011
     int c;
     wchar_t *char2b;
     struct font_info *font_info;
1012
     struct charset *charset;
1013
     int * two_byte_p;
1014 1015
{
  int codepage;
1016
  int unicode_p = 0;
1017
  int internal_two_byte_p = 0;
1018

1019 1020
  XFontStruct *font = font_info->font;

1021
  internal_two_byte_p = w32_font_is_double_byte (font);
1022

1023 1024 1025 1026 1027 1028 1029 1030 1031 1032
  /* FONT_INFO may define a scheme by which to encode byte1 and byte2.
     This may be either a program in a special encoder language or a
     fixed encoding.  */
  if (font_info->font_encoder)
    {
      /* It's a program.  */
      struct ccl_program *ccl = font_info->font_encoder;

      if (CHARSET_DIMENSION (charset) == 1)
	{
Kenichi Handa's avatar
Kenichi Handa committed
1033
	  ccl->reg[0] = CHARSET_ID (charset);
1034
	  ccl->reg[1] = XCHAR2B_BYTE2 (char2b);
1035
	  ccl->reg[2] = -1;
1036 1037 1038
	}
      else
	{
Kenichi Handa's avatar
Kenichi Handa committed
1039
	  ccl->reg[0] = CHARSET_ID (charset);
1040 1041
	  ccl->reg[1] = XCHAR2B_BYTE1 (char2b);
	  ccl->reg[2] = XCHAR2B_BYTE2 (char2b);
1042 1043
	}

Kenichi Handa's avatar
Kenichi Handa committed
1044
      ccl_driver (ccl, NULL, NULL, 0, 0, Qnil);
1045 1046 1047

      /* We assume that MSBs are appropriately set/reset by CCL
	 program.  */
1048
      if (!internal_two_byte_p)	/* 1-byte font */
1049
	STORE_XCHAR2B (char2b, 0, ccl->reg[1]);
1050
      else
1051
	STORE_XCHAR2B (char2b, ccl->reg[1], ccl->reg[2]);
1052
    }
1053
  else if (font_info->encoding_type)
1054 1055 1056
    {
      /* Fixed encoding scheme.  See fontset.h for the meaning of the
	 encoding numbers.  */
1057
      unsigned char enc = font_info->encoding_type;
1058

1059 1060
      if ((enc == 1 || enc == 2)
	  && CHARSET_DIMENSION (charset) == 2)
1061
	STORE_XCHAR2B (char2b, XCHAR2B_BYTE1 (char2b) | 0x80, XCHAR2B_BYTE2 (char2b));
1062

1063 1064
      if (enc == 1 || enc == 3
          || (enc == 4 && CHARSET_DIMENSION (charset) == 1))
1065
	STORE_XCHAR2B (char2b, XCHAR2B_BYTE1 (char2b), XCHAR2B_BYTE2 (char2b) | 0x80);
1066 1067
      else if (enc == 4)
        {
Kenichi Handa's avatar
Kenichi Handa committed
1068
          int code = (int) char2b;
1069

Kenichi Handa's avatar
Kenichi Handa committed
1070 1071
	  JIS_TO_SJIS (code);
          STORE_XCHAR2B (char2b, (code >> 8), (code & 0xFF));
1072 1073
        }
    }
1074
  codepage = font_info->codepage;
1075 1076 1077 1078

  /* If charset is not ASCII or Latin-1, may need to move it into
     Unicode space.  */
  if ( font && !font->bdf && w32_use_unicode_for_codepage (codepage)
Kenichi Handa's avatar
Kenichi Handa committed
1079
       && c >= 0x100)
1080 1081
    {
      char temp[3];
1082 1083
      temp[0] = XCHAR2B_BYTE1 (char2b);
      temp[1] = XCHAR2B_BYTE2 (char2b);
1084
      temp[2] = '\0';
1085 1086 1087 1088 1089 1090 1091
      if (codepage != CP_UNICODE)
        {
          if (temp[0])
            MultiByteToWideChar (codepage, 0, temp, 2, char2b, 1);
          else
            MultiByteToWideChar (codepage, 0, temp+1, 1, char2b, 1);
        }
1092
      unicode_p = 1;
1093
      internal_two_byte_p = 1;
1094
    }
1095 1096 1097 1098

  if (two_byte_p)
    *two_byte_p = internal_two_byte_p;

1099 1100
  if (!font)
    return UNKNOWN_FONT;
1101 1102
  else if (font->bdf && CHARSET_DIMENSION (charset) == 1)
    return BDF_1D_FONT;
1103
  else if (font->bdf)
1104
    return BDF_2D_FONT;
1105 1106 1107 1108
  else if (unicode_p)
    return UNICODE_FONT;
  else
    return ANSI_FONT;
1109 1110 1111
}


1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208
/* Return a char-table whose elements are t if the font FONT_INFO
   contains a glyph for the corresponding character, and nil if not.

   Fixme: For the moment, this function works only for fonts whose
   glyph encoding is the same as Unicode (e.g. ISO10646-1 fonts).  */

Lisp_Object
x_get_font_repertory (f, font_info)
     FRAME_PTR f;
     struct font_info *font_info;
{
#if 0 /* TODO: New function, convert to Windows. */
  XFontStruct *font = (XFontStruct *) font_info->font;
  Lisp_Object table;
  int min_byte1, max_byte1, min_byte2, max_byte2;

  table = Fmake_char_table (Qnil, Qnil);

  min_byte1 = font->min_byte1;
  max_byte1 = font->max_byte1;
  min_byte2 = font->min_char_or_byte2;
  max_byte2 = font->max_char_or_byte2;
  if (min_byte1 == 0 && max_byte1 == 0)
    {
      if (! font->per_char || font->all_chars_exist == True)
	char_table_set_range (table, min_byte2, max_byte2, Qt);
      else
	{
	  XCharStruct *pcm = font->per_char;
	  int from = -1;
	  int i;

	  for (i = min_byte2; i <= max_byte2; i++, pcm++)
	    {
	      if (pcm->width == 0 && pcm->rbearing == pcm->lbearing)
		{
		  if (from >= 0)
		    {
		      char_table_set_range (table, from, i - 1, Qt);
		      from = -1;
		    }
		}
	      else if (from < 0)
		from = i;
	    }
	  if (from >= 0)
	    char_table_set_range (table, from, i - 1, Qt);
	}
    }
  else
    {
      if (! font->per_char || font->all_chars_exist == True)
	{
	  int i;

	  for (i = min_byte1; i <= max_byte1; i++)
	    char_table_set_range (table,
				  (i << 8) | min_byte2, (i << 8) | max_byte2,
				  Qt);
	}
      else
	{
	  XCharStruct *pcm = font->per_char;
	  int i;

	  for (i = min_byte1; i <= max_byte1; i++)
	    {
	      int from = -1;
	      int j;

	      for (j = min_byte2; j <= max_byte2; j++, pcm++)
		{
		  if (pcm->width == 0 && pcm->rbearing == pcm->lbearing)
		    {
		      if (from >= 0)
			{
			  char_table_set_range (table, (i << 8) | from,
						(i << 8) | (j - 1), Qt);
			  from = -1;
			}
		    }
		  else if (from < 0)
		    from = j;
		}
	      if (from >= 0)
		char_table_set_range (table, (i << 8) | from,
				      (i << 8) | (j - 1), Qt);
	    }
	}
    }

  return table;
#else
  return Fmake_char_table (Qnil, Qnil);
#endif
}

Geoff Voelker's avatar
Geoff Voelker committed
1209

1210 1211 1212 1213 1214
/***********************************************************************
			    Glyph display
 ***********************************************************************/


1215
/* Encapsulate the different ways of displaying text under W32.  */
1216

1217 1218
static void
w32_text_out (s, x, y,chars,nchars)