w32term.c 180 KB
Newer Older
1
/* Implementation of GUI terminal on the Microsoft W32 API.
Glenn Morris's avatar
Glenn Morris committed
2

3
Copyright (C) 1989, 1993-2011  Free Software Foundation, Inc.
Geoff Voelker's avatar
Geoff Voelker committed
4 5 6

This file is part of GNU Emacs.

7
GNU Emacs is free software: you can redistribute it and/or modify
Geoff Voelker's avatar
Geoff Voelker committed
8
it under the terms of the GNU General Public License as published by
9 10
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Geoff Voelker's avatar
Geoff Voelker committed
11 12 13 14 15 16 17

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
along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
Geoff Voelker's avatar
Geoff Voelker committed
19 20

#include <config.h>
21
#include <signal.h>
Geoff Voelker's avatar
Geoff Voelker committed
22
#include <stdio.h>
23
#include <setjmp.h>
Geoff Voelker's avatar
Geoff Voelker committed
24 25
#include "lisp.h"
#include "blockinput.h"
26
#include "w32term.h"
Geoff Voelker's avatar
Geoff Voelker committed
27 28 29 30 31 32 33

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

#include <ctype.h>
#include <errno.h>
#include <sys/stat.h>
34
#include <imm.h>
Geoff Voelker's avatar
Geoff Voelker committed
35

36 37 38 39
#include "charset.h"
#include "character.h"
#include "coding.h"
#include "ccl.h"
Geoff Voelker's avatar
Geoff Voelker committed
40 41
#include "frame.h"
#include "dispextern.h"
42
#include "fontset.h"
Geoff Voelker's avatar
Geoff Voelker committed
43 44 45 46 47 48
#include "termhooks.h"
#include "termopts.h"
#include "termchar.h"
#include "disptab.h"
#include "buffer.h"
#include "window.h"
49
#include "keyboard.h"
Geoff Voelker's avatar
Geoff Voelker committed
50
#include "intervals.h"
51 52 53 54 55 56
#include "process.h"
#include "atimer.h"
#include "keymap.h"

#include "w32heap.h"
#include <shellapi.h>
Geoff Voelker's avatar
Geoff Voelker committed
57

Jason Rumney's avatar
Jason Rumney committed
58
#include "font.h"
59
#include "w32font.h"
60

Kim F. Storm's avatar
Kim F. Storm committed
61
/* Fringe bitmaps.  */
62

63 64
static int max_fringe_bmp = 0;
static HBITMAP *fringe_bmp = 0;
65

66
/* Temporary variables for w32_read_socket.  */
67

68 69
static int last_mousemove_x = 0;
static int last_mousemove_y = 0;
70

71 72 73 74 75
/* 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

76 77 78 79 80
/* Non-zero means that a HELP_EVENT has been generated since Emacs
   start.  */

static int any_help_event_p;

81 82 83
/* Last window where we saw the mouse.  Used by mouse-autoselect-window.  */
static Lisp_Object last_window;

Geoff Voelker's avatar
Geoff Voelker committed
84 85
extern unsigned int msh_mousewheel;

86
extern void free_frame_menubar (struct frame *);
Geoff Voelker's avatar
Geoff Voelker committed
87

88
extern int w32_codepage_for_font (char *fontname);
89
extern Cursor w32_load_cursor (LPCTSTR name);
90

Geoff Voelker's avatar
Geoff Voelker committed
91 92 93 94
#define x_any_window_to_frame x_window_to_frame
#define x_top_window_to_frame x_window_to_frame


95 96
/* 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
97
struct w32_display_info *x_display_list;
Geoff Voelker's avatar
Geoff Voelker committed
98 99

/* This is a list of cons cells, each of the form (NAME . FONT-LIST-CACHE),
100
   one for each element of w32_display_list and in the same order.
Geoff Voelker's avatar
Geoff Voelker committed
101 102
   NAME is the name of the frame.
   FONT-LIST-CACHE records previous values returned by x-list-fonts.  */
103
Lisp_Object w32_display_name_list;
Geoff Voelker's avatar
Geoff Voelker committed
104

105 106 107 108 109 110 111 112 113 114 115

#ifndef GLYPHSET
/* Pre Windows 2000, this was not available, but define it here so
   that Emacs compiled on such a platform will run on newer versions.  */

typedef struct tagWCRANGE
{
  WCHAR wcLow;
  USHORT cGlyphs;
} WCRANGE;

Juanma Barranquero's avatar
Juanma Barranquero committed
116
typedef struct tagGLYPHSET
117 118 119 120 121 122
{
  DWORD cbThis;
  DWORD flAccel;
  DWORD cGlyphsSupported;
  DWORD cRanges;
  WCRANGE ranges[1];
Juanma Barranquero's avatar
Juanma Barranquero committed
123
} GLYPHSET;
124 125 126

#endif

127
/* Dynamic linking to SetLayeredWindowAttribute (only since 2000).  */
128
BOOL (WINAPI *pfnSetLayeredWindowAttributes) (HWND, COLORREF, BYTE, DWORD);
129 130 131 132

#ifndef LWA_ALPHA
#define LWA_ALPHA 0x02
#endif
133 134 135 136 137
/* WS_EX_LAYERED is defined unconditionally by MingW, but only for W2K and
   later targets by MSVC headers.  */
#ifndef WS_EX_LAYERED
#define WS_EX_LAYERED 0x80000
#endif
138

Geoff Voelker's avatar
Geoff Voelker committed
139 140 141
/* This is a frame waiting to be autoraised, within w32_read_socket.  */
struct frame *pending_autoraise_frame;

142 143 144 145 146
/* 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;
147 148
DWORD dwWindowsThreadId = 0;
HANDLE hWindowsThread = NULL;
Geoff Voelker's avatar
Geoff Voelker committed
149 150 151
DWORD dwMainThreadId = 0;
HANDLE hMainThread = NULL;

152 153 154 155 156 157
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
158 159 160 161
/* Mouse movement. */

/* Where the mouse was last time we reported a mouse event.  */
static RECT last_mouse_glyph;
162
static FRAME_PTR last_mouse_glyph_frame;
Geoff Voelker's avatar
Geoff Voelker committed
163 164 165 166

/* The scroll bar in which the last motion event occurred.

   If the last motion event occurred in a scroll bar, we set this
167
   so w32_mouse_position can know whether to report a scroll bar motion or
Geoff Voelker's avatar
Geoff Voelker committed
168 169 170
   an ordinary motion.

   If the last motion event didn't occur in a scroll bar, we set this
171
   to Qnil, to tell w32_mouse_position to return an ordinary motion event.  */
172 173
static Lisp_Object last_mouse_scroll_bar;
static int last_mouse_scroll_bar_pos;
Geoff Voelker's avatar
Geoff Voelker committed
174

175
/* This is a hack.  We would really prefer that w32_mouse_position would
Geoff Voelker's avatar
Geoff Voelker committed
176
   return the time associated with the position it returns, but there
177
   doesn't seem to be any way to wrest the time-stamp from the server
Geoff Voelker's avatar
Geoff Voelker committed
178 179 180
   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.  */
181 182 183 184
static Time last_mouse_movement_time;

/* Incremented by w32_read_socket whenever it really tries to read
   events.  */
Geoff Voelker's avatar
Geoff Voelker committed
185 186 187 188 189 190
#ifdef __STDC__
static int volatile input_signal_count;
#else
static int input_signal_count;
#endif

191 192 193
/* Keyboard code page - may be changed by language-change events.  */
static int keyboard_codepage;

194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227
static void x_update_window_end (struct window *, int, int);
static void w32_handle_tool_bar_click (struct frame *,
                                       struct input_event *);
static void w32_define_cursor (Window, Cursor);

void x_lower_frame (struct frame *);
void x_scroll_bar_clear (struct frame *);
void x_wm_set_size_hint (struct frame *, long, int);
void x_raise_frame (struct frame *);
void x_set_window_size (struct frame *, int, int, int);
void x_wm_set_window_state (struct frame *, int);
void x_wm_set_icon_pixmap (struct frame *, int);
static void w32_initialize (void);
static void x_update_end (struct frame *);
static void w32_frame_up_to_date (struct frame *);
static void w32_set_terminal_modes (struct terminal *);
static void w32_reset_terminal_modes (struct terminal *);
static void x_clear_frame (struct frame *);
static void frame_highlight (struct frame *);
static void frame_unhighlight (struct frame *);
static void x_new_focus_frame (struct w32_display_info *,
                               struct frame *);
static void x_focus_changed (int, int, struct w32_display_info *,
                             struct frame *, struct input_event *);
static void w32_detect_focus_change (struct w32_display_info *,
                                     W32Msg *, struct input_event *);
static void w32_frame_rehighlight (struct frame *);
static void x_frame_rehighlight (struct w32_display_info *);
static void x_draw_hollow_cursor (struct window *, struct glyph_row *);
static void x_draw_bar_cursor (struct window *, struct glyph_row *, int,
                               enum text_cursor_kinds);
static void w32_clip_to_row (struct window *, struct glyph_row *, int, HDC);
static BOOL my_show_window (struct frame *, HWND, int);
static void my_set_window_pos (HWND, HWND, int, int, int, int, UINT);
228
#if 0
229
static void my_set_focus (struct frame *, HWND);
230
#endif
231 232
static void my_set_foreground_window (HWND);
static void my_destroy_window (struct frame *, HWND);
233

Geoff Voelker's avatar
Geoff Voelker committed
234 235 236
static Lisp_Object Qvendor_specific_keysyms;


237 238 239 240
/***********************************************************************
			      Debugging
 ***********************************************************************/

Geoff Voelker's avatar
Geoff Voelker committed
241
#if 0
242 243 244

/* This is a function useful for recording debugging information about
   the sequence of occurrences in this file.  */
Geoff Voelker's avatar
Geoff Voelker committed
245

246
struct record
Geoff Voelker's avatar
Geoff Voelker committed
247 248 249 250 251 252 253 254 255
{
  char *locus;
  int type;
};

struct record event_record[100];

int event_record_index;

256
record_event (char *locus, int type)
Geoff Voelker's avatar
Geoff Voelker committed
257 258 259 260 261 262 263 264 265 266 267
{
  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 */

268

269
void
270
XChangeGC (void *ignore, XGCValues *gc, unsigned long mask,
271
	   XGCValues *xgcv)
272 273 274 275 276 277 278 279 280
{
  if (mask & GCForeground)
    gc->foreground = xgcv->foreground;
  if (mask & GCBackground)
    gc->background = xgcv->background;
  if (mask & GCFont)
    gc->font = xgcv->font;
}

281 282
XGCValues *
XCreateGC (void *ignore, Window window, unsigned long mask, XGCValues *xgcv)
283 284
{
  XGCValues *gc = (XGCValues *) xmalloc (sizeof (XGCValues));
285
  memset (gc, 0, sizeof (XGCValues));
286 287 288 289 290 291

  XChangeGC (ignore, gc, mask, xgcv);

  return gc;
}

292
void
293 294
XGetGCValues (void *ignore, XGCValues *gc,
	      unsigned long mask, XGCValues *xgcv)
295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334
{
  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. */
335
void
336
w32_fill_rect (FRAME_PTR f, HDC hdc, COLORREF pix, RECT *lprect)
Geoff Voelker's avatar
Geoff Voelker committed
337 338
{
  HBRUSH hb;
339

Geoff Voelker's avatar
Geoff Voelker committed
340 341 342 343 344
  hb = CreateSolidBrush (pix);
  FillRect (hdc, lprect, hb);
  DeleteObject (hb);
}

345
void
346
w32_clear_window (FRAME_PTR f)
Geoff Voelker's avatar
Geoff Voelker committed
347 348
{
  RECT rect;
349
  HDC hdc = get_frame_dc (f);
Geoff Voelker's avatar
Geoff Voelker committed
350

351 352 353 354 355 356 357 358 359
  /* 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);
    }

360
  release_frame_dc (f, hdc);
Geoff Voelker's avatar
Geoff Voelker committed
361 362
}

363 364 365
#define OPAQUE_FRAME 255

void
366
x_set_frame_alpha (struct frame *f)
367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388
{
  struct w32_display_info *dpyinfo = FRAME_W32_DISPLAY_INFO (f);
  double alpha = 1.0;
  double alpha_min = 1.0;
  BYTE opac;
  LONG ex_style;
  HWND window = FRAME_W32_WINDOW (f);

  /* Older versions of Windows do not support transparency.  */
  if (!pfnSetLayeredWindowAttributes)
    return;

  if (dpyinfo->x_highlight_frame == f)
    alpha = f->alpha[0];
  else
    alpha = f->alpha[1];

  if (FLOATP (Vframe_alpha_lower_limit))
    alpha_min = XFLOAT_DATA (Vframe_alpha_lower_limit);
  else if (INTEGERP (Vframe_alpha_lower_limit))
    alpha_min = (XINT (Vframe_alpha_lower_limit)) / 100.0;

389 390 391
  if (alpha < 0.0)
    return;
  else if (alpha > 1.0)
392 393 394 395 396 397 398 399 400
    alpha = 1.0;
  else if (alpha < alpha_min && alpha_min <= 1.0)
    alpha = alpha_min;

  opac = alpha * OPAQUE_FRAME;

  ex_style = GetWindowLong (window, GWL_EXSTYLE);

  if (opac == OPAQUE_FRAME)
Jason Rumney's avatar
Jason Rumney committed
401
    ex_style &= ~WS_EX_LAYERED;
402 403 404 405 406 407 408 409 410
  else
    ex_style |= WS_EX_LAYERED;

  SetWindowLong (window, GWL_EXSTYLE, ex_style);

  if (opac != OPAQUE_FRAME)
    pfnSetLayeredWindowAttributes (window, 0, opac, LWA_ALPHA);
}

411
int
412
x_display_pixel_height (struct w32_display_info *dpyinfo)
413
{
414 415 416 417
  HDC dc = GetDC (NULL);
  int pixels = GetDeviceCaps (dc, VERTRES);
  ReleaseDC (NULL, dc);
  return pixels;
418 419 420
}

int
421
x_display_pixel_width (struct w32_display_info *dpyinfo)
422
{
423 424 425 426
  HDC dc = GetDC (NULL);
  int pixels = GetDeviceCaps (dc, HORZRES);
  ReleaseDC (NULL, dc);
  return pixels;
427 428
}

Geoff Voelker's avatar
Geoff Voelker committed
429

430 431 432
/***********************************************************************
		    Starting and ending an update
 ***********************************************************************/
433

434 435 436
/* 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
437
   each window being updated.  */
Geoff Voelker's avatar
Geoff Voelker committed
438

439
static void
440
x_update_begin (struct frame *f)
Geoff Voelker's avatar
Geoff Voelker committed
441
{
442 443
  struct w32_display_info *display_info = FRAME_W32_DISPLAY_INFO (f);

Andrew Innes's avatar
Andrew Innes committed
444 445 446
  if (! FRAME_W32_P (f))
    return;

447 448 449 450 451 452 453
  /* 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;
  }
454
}
Geoff Voelker's avatar
Geoff Voelker committed
455

456 457 458 459 460 461

/* 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
462
x_update_window_begin (struct window *w)
463 464
{
  struct frame *f = XFRAME (WINDOW_FRAME (w));
465
  Mouse_HLInfo *hlinfo = MOUSE_HL_INFO (f);
466

467
  /* Hide the system caret during an update.  */
468 469 470 471
  if (w32_use_visible_system_caret && w32_system_caret_hwnd)
    {
      SendMessage (w32_system_caret_hwnd, WM_EMACS_HIDE_CARET, 0, 0);
    }
472

473 474
  updated_window = w;
  set_output_cursor (&w->cursor);
Geoff Voelker's avatar
Geoff Voelker committed
475 476 477

  BLOCK_INPUT;

478
  if (f == hlinfo->mouse_face_mouse_frame)
Geoff Voelker's avatar
Geoff Voelker committed
479 480
    {
      /* Don't do highlighting for mouse motion during the update.  */
481
      hlinfo->mouse_face_defer = 1;
Geoff Voelker's avatar
Geoff Voelker committed
482

483 484
      /* If F needs to be redrawn, simply forget about any prior mouse
	 highlighting.  */
Geoff Voelker's avatar
Geoff Voelker committed
485
      if (FRAME_GARBAGED_P (f))
486
	hlinfo->mouse_face_window = Qnil;
487

488 489 490 491 492 493
#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.  */
494

495 496 497 498 499
      /* 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.  */
500 501
      if (!NILP (hlinfo->mouse_face_window)
	  && w == XWINDOW (hlinfo->mouse_face_window))
Geoff Voelker's avatar
Geoff Voelker committed
502
	{
503
	  int i;
Geoff Voelker's avatar
Geoff Voelker committed
504

505 506
          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
507 508
	      break;

509
	  if (i < w->desired_matrix->nrows)
510
	    clear_mouse_face (hlinfo);
Geoff Voelker's avatar
Geoff Voelker committed
511
	}
512
#endif /* 0 */
Geoff Voelker's avatar
Geoff Voelker committed
513 514 515 516 517
    }

  UNBLOCK_INPUT;
}

518
/* Draw a vertical window border from (x,y0) to (x,y1)  */
519

520
static void
521
w32_draw_vertical_window_border (struct window *w, int x, int y0, int y1)
Geoff Voelker's avatar
Geoff Voelker committed
522
{
523
  struct frame *f = XFRAME (WINDOW_FRAME (w));
524 525
  RECT r;
  HDC hdc;
526
  struct face *face;
527

528 529 530 531
  r.left = x;
  r.right = x + 1;
  r.top = y0;
  r.bottom = y1;
532

533
  hdc = get_frame_dc (f);
534 535 536 537 538 539
  face = FACE_FROM_ID (f, VERTICAL_BORDER_FACE_ID);
  if (face)
    w32_fill_rect (f, hdc, face->foreground, &r);
  else
    w32_fill_rect (f, hdc, FRAME_FOREGROUND_PIXEL (f), &r);

540
  release_frame_dc (f, hdc);
541
}
Geoff Voelker's avatar
Geoff Voelker committed
542

543

544 545 546 547 548 549 550 551 552 553 554 555
/* 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. */
556 557

static void
558 559
x_update_window_end (struct window *w, int cursor_on_p,
		     int mouse_face_overwritten_p)
560
{
561
  Mouse_HLInfo *hlinfo = MOUSE_HL_INFO (XFRAME (w->frame));
562

563 564 565
  if (!w->pseudo_window_p)
    {
      BLOCK_INPUT;
566

567
      if (cursor_on_p)
568 569 570
	display_and_set_cursor (w, 1, output_cursor.hpos,
				output_cursor.vpos,
				output_cursor.x, output_cursor.y);
571

572 573
      if (draw_window_fringes (w, 1))
	x_draw_vertical_border (w);
Kenichi Handa's avatar
Kenichi Handa committed
574

575 576
      UNBLOCK_INPUT;
    }
577 578 579 580 581

  /* If a row with mouse-face was overwritten, arrange for
     XTframe_up_to_date to redisplay the mouse highlight.  */
  if (mouse_face_overwritten_p)
    {
582 583 584
      hlinfo->mouse_face_beg_row = hlinfo->mouse_face_beg_col = -1;
      hlinfo->mouse_face_end_row = hlinfo->mouse_face_end_col = -1;
      hlinfo->mouse_face_window = Qnil;
585 586
    }

587 588 589
  /* 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.  */
590 591 592 593
  if (w32_use_visible_system_caret && w32_system_caret_hwnd)
    {
      SendMessage (w32_system_caret_hwnd, WM_EMACS_SHOW_CARET, 0, 0);
    }
594

595 596 597
  updated_window = NULL;
}

598 599 600 601

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

602
static void
603
x_update_end (struct frame *f)
604
{
Andrew Innes's avatar
Andrew Innes committed
605 606 607
  if (! FRAME_W32_P (f))
    return;

608
  /* Mouse highlight may be displayed again.  */
609
  MOUSE_HL_INFO (f)->mouse_face_defer = 0;
Geoff Voelker's avatar
Geoff Voelker committed
610 611
}

612

613 614 615
/* 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
616

617
static void
618
w32_frame_up_to_date (struct frame *f)
Geoff Voelker's avatar
Geoff Voelker committed
619
{
620
  if (FRAME_W32_P (f))
Geoff Voelker's avatar
Geoff Voelker committed
621
    {
622
      Mouse_HLInfo *hlinfo = MOUSE_HL_INFO (f);
623

624 625
      if (hlinfo->mouse_face_deferred_gc
	  || f == hlinfo->mouse_face_mouse_frame)
626 627
	{
	  BLOCK_INPUT;
628 629 630 631 632
	  if (hlinfo->mouse_face_mouse_frame)
	    note_mouse_highlight (hlinfo->mouse_face_mouse_frame,
				  hlinfo->mouse_face_mouse_x,
				  hlinfo->mouse_face_mouse_y);
	  hlinfo->mouse_face_deferred_gc = 0;
633 634
	  UNBLOCK_INPUT;
	}
Geoff Voelker's avatar
Geoff Voelker committed
635 636
    }
}
637 638 639


/* Draw truncation mark bitmaps, continuation mark bitmaps, overlay
Kim F. Storm's avatar
Kim F. Storm committed
640
   arrow bitmaps, or clear the fringes if no bitmaps are required
641
   before DESIRED_ROW is made current.  The window being updated is
642
   found in updated_window.  This function is called from
643 644 645 646
   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
647
x_after_update_window_line (struct glyph_row *desired_row)
648 649
{
  struct window *w = updated_window;
650 651 652
  struct frame *f;
  int width, height;

653
  xassert (w);
654

655
  if (!desired_row->mode_line_p && !w->pseudo_window_p)
Kenichi Handa's avatar
Kenichi Handa committed
656
    desired_row->redraw_fringe_bitmaps_p = 1;
657

658 659 660 661 662 663 664 665 666 667 668 669 670 671 672
  /* 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));
673

674 675 676 677
      BLOCK_INPUT;
      {
	HDC hdc = get_frame_dc (f);
	w32_clear_area (f, hdc, 0, y, width, height);
678
	w32_clear_area (f, hdc, FRAME_PIXEL_WIDTH (f) - width,
679 680 681
			y, width, height);
	release_frame_dc (f, hdc);
      }
682 683 684 685 686
      UNBLOCK_INPUT;
    }
}


Kim F. Storm's avatar
Kim F. Storm committed
687
/* Draw the bitmap WHICH in one of the left or right fringes of
688 689 690 691 692
   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
693 694
w32_draw_fringe_bitmap (struct window *w, struct glyph_row *row,
			struct draw_fringe_bitmap_params *p)
695 696
{
  struct frame *f = XFRAME (WINDOW_FRAME (w));
Kim F. Storm's avatar
Kim F. Storm committed
697 698 699 700
  HDC hdc;
  struct face *face = p->face;

  hdc = get_frame_dc (f);
701

702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755
  if (!p->overlay_p)
    {
      int bx = p->bx, by = p->by, nx = p->nx, ny = p->ny;

      /* If the fringe is adjacent to the left (right) scroll bar of a
	 leftmost (rightmost, respectively) window, then extend its
	 background to the gap between the fringe and the bar.  */
      if ((WINDOW_LEFTMOST_P (w)
	   && WINDOW_HAS_VERTICAL_SCROLL_BAR_ON_LEFT (w))
	  || (WINDOW_RIGHTMOST_P (w)
	      && WINDOW_HAS_VERTICAL_SCROLL_BAR_ON_RIGHT (w)))
	{
	  int sb_width = WINDOW_CONFIG_SCROLL_BAR_WIDTH (w);

	  if (sb_width > 0)
	    {
	      int left = WINDOW_SCROLL_BAR_AREA_X (w);
	      int width = (WINDOW_CONFIG_SCROLL_BAR_COLS (w)
			   * FRAME_COLUMN_WIDTH (f));

	      if (bx < 0)
		{
		  /* Bitmap fills the fringe.  */
		  if (left + width == p->x)
		    bx = left + sb_width;
		  else if (p->x + p->wd == left)
		    bx = left;
		  if (bx >= 0)
		    {
		      int header_line_height = WINDOW_HEADER_LINE_HEIGHT (w);

		      nx = width - sb_width;
		      by = WINDOW_TO_FRAME_PIXEL_Y (w, max (header_line_height,
							    row->y));
		      ny = row->visible_height;
		    }
		}
	      else
		{
		  if (left + width == bx)
		    {
		      bx = left + sb_width;
		      nx += width - sb_width;
		    }
		  else if (bx + nx == left)
		    nx += width - sb_width;
		}
	    }
	}

      if (bx >= 0 && nx > 0)
	w32_fill_area (f, hdc, face->background, bx, by, nx, ny);
    }

756
  /* Must clip because of partially visible lines.  */
757
  w32_clip_to_row (w, row, -1, hdc);
758

759
  if (p->which && p->which < max_fringe_bmp)
Kim F. Storm's avatar
Kim F. Storm committed
760 761 762 763
    {
      HBITMAP pixmap = fringe_bmp[p->which];
      HDC compat_hdc;
      HANDLE horig_obj;
764

Kim F. Storm's avatar
Kim F. Storm committed
765
      compat_hdc = CreateCompatibleDC (hdc);
Kenichi Handa's avatar
Kenichi Handa committed
766

Kim F. Storm's avatar
Kim F. Storm committed
767
      SaveDC (hdc);
768

Kim F. Storm's avatar
Kim F. Storm committed
769
      horig_obj = SelectObject (compat_hdc, pixmap);
770

Kenichi Handa's avatar
Kenichi Handa committed
771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804
      /* Paint overlays transparently.  */
      if (p->overlay_p)
	{
	  HBRUSH h_brush, h_orig_brush;

	  SetTextColor (hdc, BLACK_PIX_DEFAULT (f));
	  SetBkColor (hdc, WHITE_PIX_DEFAULT (f));
	  h_brush = CreateSolidBrush (face->foreground);
	  h_orig_brush = SelectObject (hdc, h_brush);

	  BitBlt (hdc, p->x, p->y, p->wd, p->h,
		  compat_hdc, 0, p->dh,
		  DSTINVERT);
	  BitBlt (hdc, p->x, p->y, p->wd, p->h,
		  compat_hdc, 0, p->dh,
		  0x2E064A);
	  BitBlt (hdc, p->x, p->y, p->wd, p->h,
		  compat_hdc, 0, p->dh,
		  DSTINVERT);

	  SelectObject (hdc, h_orig_brush);
	  DeleteObject (h_brush);
	}
      else
	{
	  SetTextColor (hdc, face->background);
	  SetBkColor (hdc, (p->cursor_p
			    ? f->output_data.w32->cursor_pixel
			    : face->foreground));

	  BitBlt (hdc, p->x, p->y, p->wd, p->h,
		  compat_hdc, 0, p->dh,
		  SRCCOPY);
	}
805

Kim F. Storm's avatar
Kim F. Storm committed
806 807 808
      SelectObject (compat_hdc, horig_obj);
      DeleteDC (compat_hdc);
      RestoreDC (hdc, -1);
809
    }
810

Kim F. Storm's avatar
Kim F. Storm committed
811
  w32_set_clip_rectangle (hdc, NULL);
812 813 814 815

  release_frame_dc (f, hdc);
}

Kenichi Handa's avatar
Kenichi Handa committed
816
static void
817
w32_define_fringe_bitmap (int which, unsigned short *bits, int h, int wd)
Kenichi Handa's avatar
Kenichi Handa committed
818
{
819 820 821 822 823 824 825 826 827
  if (which >= max_fringe_bmp)
    {
      int i = max_fringe_bmp;
      max_fringe_bmp = which + 20;
      fringe_bmp = (HBITMAP *) xrealloc (fringe_bmp, max_fringe_bmp * sizeof (HBITMAP));
      while (i < max_fringe_bmp)
	fringe_bmp[i++] = 0;
    }

Kenichi Handa's avatar
Kenichi Handa committed
828 829 830 831
  fringe_bmp[which] = CreateBitmap (wd, h, 1, 1, bits);
}

static void
832
w32_destroy_fringe_bitmap (int which)
Kenichi Handa's avatar
Kenichi Handa committed
833
{
834 835 836
  if (which >= max_fringe_bmp)
    return;

Kenichi Handa's avatar
Kenichi Handa committed
837 838 839 840 841 842
  if (fringe_bmp[which])
    DeleteObject (fringe_bmp[which]);
  fringe_bmp[which] = 0;
}


Geoff Voelker's avatar
Geoff Voelker committed
843

844 845 846 847
/* 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
848

849
static void
850
w32_set_terminal_modes (struct terminal *term)
Geoff Voelker's avatar
Geoff Voelker committed
851 852 853
{
}

854
/* This is called when exiting or suspending Emacs.  Exiting will make
855
   the W32 windows go away, and suspending requires no action. */
Geoff Voelker's avatar
Geoff Voelker committed
856

857
static void
858
w32_reset_terminal_modes (struct terminal *term)
Geoff Voelker's avatar
Geoff Voelker committed
859 860
{
}
861

862

863

864 865 866 867 868 869
/***********************************************************************
			   Display Iterator
 ***********************************************************************/

/* Function prototypes of this page.  */

870 871 872 873 874 875 876 877 878 879 880
static void x_set_glyph_string_clipping (struct glyph_string *);
static void x_set_glyph_string_gc (struct glyph_string *);
static void x_draw_glyph_string_background (struct glyph_string *,
                                            int);
static void x_draw_glyph_string_foreground (struct glyph_string *);
static void x_draw_composite_glyph_string_foreground (struct glyph_string *);
static void x_draw_glyph_string_box (struct glyph_string *);
static void x_draw_glyph_string  (struct glyph_string *);
static void x_set_cursor_gc (struct glyph_string *);
static void x_set_mode_line_face_gc (struct glyph_string *);
static void x_set_mouse_face_gc (struct glyph_string *);
881
static int w32_alloc_lighter_color (struct frame *, COLORREF *, double, int);
882 883 884 885 886 887 888 889 890 891 892 893 894 895
static void w32_setup_relief_color (struct frame *, struct relief *,
                                    double, int, COLORREF);
static void x_setup_relief_colors (struct glyph_string *);
static void x_draw_image_glyph_string (struct glyph_string *);
static void x_draw_image_relief (struct glyph_string *);
static void x_draw_image_foreground (struct glyph_string *);
static void w32_draw_image_foreground_1 (struct glyph_string *, HBITMAP);
static void x_clear_glyph_string_rect (struct glyph_string *, int,
                                       int, int, int);
static void w32_draw_relief_rect (struct frame *, int, int, int, int,
                                  int, int, int, int, int, int,
                                  RECT *);
static void w32_draw_box_rect (struct glyph_string *, int, int, int, int,
                               int, int, int, RECT *);
896

897

898 899 900 901
/* Set S->gc to a suitable GC for drawing glyph string S in cursor
   face.  */

static void
902
x_set_cursor_gc (struct glyph_string *s)
903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950
{
  if (s->font == FRAME_FONT (s->f)
      && s->face->background == FRAME_BACKGROUND_PIXEL (s->f)
      && s->face->foreground == FRAME_FOREGROUND_PIXEL (s->f)
      && !s->cmp)
    s->gc = s->f->output_data.w32->cursor_gc;
  else
    {
      /* Cursor on non-default face: must merge.  */
      XGCValues xgcv;
      unsigned long mask;

      xgcv.background = s->f->output_data.w32->cursor_pixel;
      xgcv.foreground = s->face->background;

      /* If the glyph would be invisible, try a different foreground.  */
      if (xgcv.foreground == xgcv.background)
	xgcv.foreground = s->face->foreground;
      if (xgcv.foreground == xgcv.background)
	xgcv.foreground = s->f->output_data.w32->cursor_foreground_pixel;
      if (xgcv.foreground == xgcv.background)
	xgcv.foreground = s->face->foreground;

      /* Make sure the cursor is distinct from text in this face.  */
      if (xgcv.background == s->face->background
	  && xgcv.foreground == s->face->foreground)
	{
	  xgcv.background = s->face->foreground;
	  xgcv.foreground = s->face->background;
	}

      IF_DEBUG (x_check_font (s->f, s->font));
      xgcv.font = s->font;
      mask = GCForeground | GCBackground | GCFont;

      if (FRAME_W32_DISPLAY_INFO (s->f)->scratch_cursor_gc)
	XChangeGC (NULL, FRAME_W32_DISPLAY_INFO (s->f)->scratch_cursor_gc,
		   mask, &xgcv);
      else
	FRAME_W32_DISPLAY_INFO (s->f)->scratch_cursor_gc
	  = XCreateGC (NULL, s->window, mask, &xgcv);

      s->gc = FRAME_W32_DISPLAY_INFO (s->f)->scratch_cursor_gc;
    }
}


/* Set up S->gc of glyph string S for drawing text in mouse face.  */
951

952
static void
953
x_set_mouse_face_gc (struct glyph_string *s)
954
{
955
  int face_id;
956
  struct face *face;
957

958
  /* What face has to be used last for the mouse face?  */
959
  face_id = MOUSE_HL_INFO (s->f)->mouse_face_face_id;
960
  face = FACE_FROM_ID (s->f, face_id);
961 962
  if (face == NULL)
    face = FACE_FROM_ID (s->f, MOUSE_FACE_ID);
963

964
  if (s->first_glyph->type == CHAR_GLYPH)
965
    face_id = FACE_FOR_CHAR (s->f, face, s->first_glyph->u.ch, -1, Qnil);
966
  else
967
    face_id = FACE_FOR_CHAR (s->f, face, 0, -1, Qnil);
968 969 970 971 972 973 974 975 976 977 978 979
  s->face = FACE_FROM_ID (s->f, face_id);
  PREPARE_FACE_FOR_DISPLAY (s->f, s->face);

  /* If font in this face is same as S->font, use it.  */
  if (s->font == s->face->font)
    s->gc = s->face->gc;
  else
    {
      /* Otherwise construct scratch_cursor_gc with values from FACE
	 but font FONT.  */
      XGCValues xgcv;
      unsigned long mask;
980

981 982 983 984 985
      xgcv.background = s->face->background;
      xgcv.foreground = s->face->foreground;
      IF_DEBUG (x_check_font (s->f, s->font));
      xgcv.font = s->font;
      mask = GCForeground | GCBackground | GCFont;
986

987 988 989 990 991 992
      if (FRAME_W32_DISPLAY_INFO (s->f)->scratch_cursor_gc)
	XChangeGC (NULL, FRAME_W32_DISPLAY_INFO (s->f)->scratch_cursor_gc,
		   mask, &xgcv);
      else
	FRAME_W32_DISPLAY_INFO (s->f)->scratch_cursor_gc
	  = XCreateGC (NULL, s->window, mask, &xgcv);
993

994 995 996 997 998 999 1000 1001 1002 1003 1004 1005
      s->gc = FRAME_W32_DISPLAY_INFO (s->f)->scratch_cursor_gc;
    }

  xassert (s->gc != 0);
}


/* Set S->gc of glyph string S to a GC suitable for drawing a mode line.
   Faces to use in the mode line have already been computed when the
   matrix was built, so there isn't much to do, here.  */

static INLINE void
1006
x_set_mode_line_face_gc (struct glyph_string *s)
1007
{
1008 1009 1010 1011 1012 1013 1014 1015 1016
  s->gc = s->face->gc;
}


/* Set S->gc of glyph string S for drawing that glyph string.  Set
   S->stippled_p to a non-zero value if the face of S has a stipple
   pattern.  */

static INLINE void
1017
x_set_glyph_string_gc (struct glyph_string *s)
1018
{
1019
  PREPARE_FACE_FOR_DISPLAY (s->f, s->face);
1020

1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061
  if (s->hl == DRAW_NORMAL_TEXT)
    {
      s->gc = s->face->gc;
      s->stippled_p = s->face->stipple != 0;
    }
  else if (s->hl == DRAW_INVERSE_VIDEO)
    {
      x_set_mode_line_face_gc (s);
      s->stippled_p = s->face->stipple != 0;
    }
  else if (s->hl == DRAW_CURSOR)
    {
      x_set_cursor_gc (s);
      s->stippled_p = 0;
    }
  else if (s->hl == DRAW_MOUSE_FACE)
    {
      x_set_mouse_face_gc (s);
      s->stippled_p = s->face->stipple != 0;
    }
  else if (s->hl == DRAW_IMAGE_RAISED
	   || s->hl == DRAW_IMAGE_SUNKEN)
    {
      s->gc = s->face->gc;
      s->stippled_p = s->face->stipple != 0;
    }
  else
    {
      s->gc = s->face->gc;
      s->stippled_p = s->face->stipple != 0;
    }

  /* GC must have been set.  */
  xassert (s->gc != 0);
}


/* Set clipping for output of glyph string S.  S may be part of a mode
   line or menu if we don't have X toolkit support.  */

static INLINE void
1062
x_set_glyph_string_clipping (struct glyph_string *s)
1063
{
1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082
  RECT *r = s->clip;
  int n = get_glyph_string_clip_rects (s, r, 2);

  if (n == 1)
    w32_set_clip_rectangle (s->hdc, r);
  else if (n > 1)
    {
      HRGN full_clip, clip1, clip2;
      clip1 = CreateRectRgnIndirect (r);
      clip2 = CreateRectRgnIndirect (r + 1);
      if (CombineRgn (full_clip, clip1, clip2, RGN_OR) != ERROR)
        {
          SelectClipRgn (s->hdc, full_clip);
        }
      DeleteObject (clip1);
      DeleteObject (clip2);
      DeleteObject (full_clip);
    }
    s->num_clips = n;
1083 1084
}

Jason Rumney's avatar
Jason Rumney committed
1085 1086 1087 1088 1089
/* Set SRC's clipping for output of glyph string DST.  This is called
   when we are drawing DST's left_overhang or right_overhang only in
   the area of SRC.  */

static void
1090 1091
x_set_glyph_string_clipping_exactly (struct glyph_string *src,
				     struct glyph_string *dst)
Jason Rumney's avatar
Jason Rumney committed
1092 1093 1094
{
  RECT r;

1095 1096 1097 1098 1099 1100
  r.left = src->x;
  r.right = r.left + src->width;
  r.top = src->y;
  r.bottom = r.top + src->height;
  dst->clip[0] = r;
  dst->num_clips = 1;
Jason Rumney's avatar
Jason Rumney committed
1101 1102
  w32_set_clip_rectangle (dst->hdc, &r);
}
1103

1104
/* RIF:
1105
   Compute left and right overhang of glyph string S.  */
1106

1107
static void
1108
w32_compute_glyph_string_overhangs (struct glyph_string *s)
1109
{
1110
  if (s->cmp == NULL
1111 1112
      && s->first_glyph->type == CHAR_GLYPH
      && !s->font_not_found_p)
1113
    {
1114 1115 1116 1117
      unsigned *code = alloca (sizeof (unsigned) * s->nchars);
      struct font *font = s->font;
      struct font_metrics metrics;
      int i;
1118

1119 1120 1121 1122 1123 1124
      for (i = 0; i < s->nchars; i++)
	code[i] = s->char2b[i];
      font->driver->text_extents (font, code, s->nchars, &metrics);
      s->right_overhang = (metrics.rbearing > metrics.width
			   ? metrics.rbearing - metrics.width : 0);
      s->left_overhang = metrics.lbearing < 0 ? -metrics.lbearing : 0;
1125 1126 1127 1128 1129 1130
    }
  else if (s->cmp)
    {
      s->right_overhang = s->cmp->rbearing - s->cmp->pixel_width;
      s->left_overhang = -s->cmp->lbearing;
    }
1131 1132 1133 1134 1135
}

/* Fill rectangle X, Y, W, H with background color of glyph string S.  */