| 1 | /* Interface definitions for display code. |
| 2 | Copyright (C) 1985, 1993, 1994, 1997, 1998, 1999, 2000, 2001, 2002, |
| 3 | 2003, 2004, 2005, 2006, 2007 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 | /* New redisplay written by Gerd Moellmann <gerd@gnu.org>. */ |
| 23 | |
| 24 | #ifndef DISPEXTERN_H_INCLUDED |
| 25 | #define DISPEXTERN_H_INCLUDED |
| 26 | |
| 27 | #ifdef HAVE_X_WINDOWS |
| 28 | |
| 29 | #include <X11/Xlib.h> |
| 30 | #ifdef USE_X_TOOLKIT |
| 31 | #include <X11/Intrinsic.h> |
| 32 | #endif /* USE_X_TOOLKIT */ |
| 33 | |
| 34 | #else /* !HAVE_X_WINDOWS */ |
| 35 | |
| 36 | /* X-related stuff used by non-X gui code. */ |
| 37 | |
| 38 | typedef struct { |
| 39 | unsigned long pixel; |
| 40 | unsigned short red, green, blue; |
| 41 | char flags; |
| 42 | char pad; |
| 43 | } XColor; |
| 44 | |
| 45 | #endif /* HAVE_X_WINDOWS */ |
| 46 | |
| 47 | #ifdef MSDOS |
| 48 | #include "msdos.h" |
| 49 | #endif |
| 50 | |
| 51 | #ifdef HAVE_X_WINDOWS |
| 52 | typedef struct x_display_info Display_Info; |
| 53 | typedef XImage * XImagePtr; |
| 54 | typedef XImagePtr XImagePtr_or_DC; |
| 55 | #define NativeRectangle XRectangle |
| 56 | #endif |
| 57 | |
| 58 | #ifdef HAVE_NTGUI |
| 59 | #include "w32gui.h" |
| 60 | typedef struct w32_display_info Display_Info; |
| 61 | typedef XImage *XImagePtr; |
| 62 | typedef HDC XImagePtr_or_DC; |
| 63 | #endif |
| 64 | |
| 65 | #ifdef MAC_OS |
| 66 | #include "macgui.h" |
| 67 | typedef struct mac_display_info Display_Info; |
| 68 | /* Mac equivalent of XImage. */ |
| 69 | typedef Pixmap XImagePtr; |
| 70 | typedef XImagePtr XImagePtr_or_DC; |
| 71 | #endif |
| 72 | |
| 73 | #ifndef NativeRectangle |
| 74 | #define NativeRectangle int |
| 75 | #endif |
| 76 | |
| 77 | /* Structure forward declarations. Some are here because function |
| 78 | prototypes below reference structure types before their definition |
| 79 | in this file. Some are here because not every file including |
| 80 | dispextern.h also includes frame.h and windows.h. */ |
| 81 | |
| 82 | struct glyph; |
| 83 | struct glyph_row; |
| 84 | struct glyph_matrix; |
| 85 | struct glyph_pool; |
| 86 | struct frame; |
| 87 | struct window; |
| 88 | |
| 89 | |
| 90 | /* Values returned from coordinates_in_window. */ |
| 91 | |
| 92 | enum window_part |
| 93 | { |
| 94 | ON_NOTHING, |
| 95 | ON_TEXT, |
| 96 | ON_MODE_LINE, |
| 97 | ON_VERTICAL_BORDER, |
| 98 | ON_HEADER_LINE, |
| 99 | ON_LEFT_FRINGE, |
| 100 | ON_RIGHT_FRINGE, |
| 101 | ON_LEFT_MARGIN, |
| 102 | ON_RIGHT_MARGIN, |
| 103 | ON_SCROLL_BAR |
| 104 | }; |
| 105 | |
| 106 | /* Number of bits allocated to store fringe bitmap numbers. */ |
| 107 | #define FRINGE_ID_BITS 16 |
| 108 | |
| 109 | |
| 110 | \f |
| 111 | /*********************************************************************** |
| 112 | Debugging |
| 113 | ***********************************************************************/ |
| 114 | |
| 115 | /* If GLYPH_DEBUG is non-zero, additional checks are activated. Turn |
| 116 | it off by defining the macro GLYPH_DEBUG to zero. */ |
| 117 | |
| 118 | #ifndef GLYPH_DEBUG |
| 119 | #define GLYPH_DEBUG 0 |
| 120 | #endif |
| 121 | |
| 122 | /* If XASSERTS is non-zero, additional consistency checks are activated. |
| 123 | Turn it off by defining the macro XASSERTS to zero. */ |
| 124 | |
| 125 | #ifndef XASSERTS |
| 126 | #define XASSERTS 0 |
| 127 | #endif |
| 128 | |
| 129 | /* Macros to include code only if GLYPH_DEBUG != 0. */ |
| 130 | |
| 131 | #if GLYPH_DEBUG |
| 132 | #define IF_DEBUG(X) X |
| 133 | #else |
| 134 | #define IF_DEBUG(X) (void) 0 |
| 135 | #endif |
| 136 | |
| 137 | #if XASSERTS |
| 138 | #define xassert(X) do {if (!(X)) abort ();} while (0) |
| 139 | #else |
| 140 | #define xassert(X) (void) 0 |
| 141 | #endif |
| 142 | |
| 143 | /* Macro for displaying traces of redisplay. If Emacs was compiled |
| 144 | with GLYPH_DEBUG != 0, the variable trace_redisplay_p can be set to |
| 145 | a non-zero value in debugging sessions to activate traces. */ |
| 146 | |
| 147 | #if GLYPH_DEBUG |
| 148 | |
| 149 | extern int trace_redisplay_p; |
| 150 | #include <stdio.h> |
| 151 | |
| 152 | #define TRACE(X) \ |
| 153 | if (trace_redisplay_p) \ |
| 154 | fprintf X; \ |
| 155 | else \ |
| 156 | (void) 0 |
| 157 | |
| 158 | #else /* GLYPH_DEBUG == 0 */ |
| 159 | |
| 160 | #define TRACE(X) (void) 0 |
| 161 | |
| 162 | #endif /* GLYPH_DEBUG == 0 */ |
| 163 | |
| 164 | |
| 165 | \f |
| 166 | /*********************************************************************** |
| 167 | Text positions |
| 168 | ***********************************************************************/ |
| 169 | |
| 170 | /* Starting with Emacs 20.3, characters from strings and buffers have |
| 171 | both a character and a byte position associated with them. The |
| 172 | following structure holds such a pair of positions. */ |
| 173 | |
| 174 | struct text_pos |
| 175 | { |
| 176 | /* Character position. */ |
| 177 | int charpos; |
| 178 | |
| 179 | /* Corresponding byte position. */ |
| 180 | int bytepos; |
| 181 | }; |
| 182 | |
| 183 | /* Access character and byte position of POS in a functional form. */ |
| 184 | |
| 185 | #define BYTEPOS(POS) (POS).bytepos |
| 186 | #define CHARPOS(POS) (POS).charpos |
| 187 | |
| 188 | /* Set character position of POS to CHARPOS, byte position to BYTEPOS. */ |
| 189 | |
| 190 | #define SET_TEXT_POS(POS, CHARPOS, BYTEPOS) \ |
| 191 | ((POS).charpos = (CHARPOS), (POS).bytepos = BYTEPOS) |
| 192 | |
| 193 | /* Increment text position POS. */ |
| 194 | |
| 195 | #define INC_TEXT_POS(POS, MULTIBYTE_P) \ |
| 196 | do \ |
| 197 | { \ |
| 198 | ++(POS).charpos; \ |
| 199 | if (MULTIBYTE_P) \ |
| 200 | INC_POS ((POS).bytepos); \ |
| 201 | else \ |
| 202 | ++(POS).bytepos; \ |
| 203 | } \ |
| 204 | while (0) |
| 205 | |
| 206 | /* Decrement text position POS. */ |
| 207 | |
| 208 | #define DEC_TEXT_POS(POS, MULTIBYTE_P) \ |
| 209 | do \ |
| 210 | { \ |
| 211 | --(POS).charpos; \ |
| 212 | if (MULTIBYTE_P) \ |
| 213 | DEC_POS ((POS).bytepos); \ |
| 214 | else \ |
| 215 | --(POS).bytepos; \ |
| 216 | } \ |
| 217 | while (0) |
| 218 | |
| 219 | /* Set text position POS from marker MARKER. */ |
| 220 | |
| 221 | #define SET_TEXT_POS_FROM_MARKER(POS, MARKER) \ |
| 222 | (CHARPOS (POS) = marker_position ((MARKER)), \ |
| 223 | BYTEPOS (POS) = marker_byte_position ((MARKER))) |
| 224 | |
| 225 | /* Set marker MARKER from text position POS. */ |
| 226 | |
| 227 | #define SET_MARKER_FROM_TEXT_POS(MARKER, POS) \ |
| 228 | set_marker_both ((MARKER), Qnil, CHARPOS ((POS)), BYTEPOS ((POS))) |
| 229 | |
| 230 | /* Value is non-zero if character and byte positions of POS1 and POS2 |
| 231 | are equal. */ |
| 232 | |
| 233 | #define TEXT_POS_EQUAL_P(POS1, POS2) \ |
| 234 | ((POS1).charpos == (POS2).charpos \ |
| 235 | && (POS1).bytepos == (POS2).bytepos) |
| 236 | |
| 237 | /* When rendering glyphs, redisplay scans string or buffer text, |
| 238 | overlay strings in that text, and does display table or control |
| 239 | character translations. The following structure captures a |
| 240 | position taking all this into account. */ |
| 241 | |
| 242 | struct display_pos |
| 243 | { |
| 244 | /* Buffer or string position. */ |
| 245 | struct text_pos pos; |
| 246 | |
| 247 | /* If this is a position in an overlay string, overlay_string_index |
| 248 | is the index of that overlay string in the sequence of overlay |
| 249 | strings at `pos' in the order redisplay processes them. A value |
| 250 | < 0 means that this is not a position in an overlay string. */ |
| 251 | int overlay_string_index; |
| 252 | |
| 253 | /* If this is a position in an overlay string, string_pos is the |
| 254 | position within that string. */ |
| 255 | struct text_pos string_pos; |
| 256 | |
| 257 | /* If the character at the position above is a control character or |
| 258 | has a display table entry, dpvec_index is an index in the display |
| 259 | table or control character translation of that character. A |
| 260 | value < 0 means this is not a position in such a translation. */ |
| 261 | int dpvec_index; |
| 262 | }; |
| 263 | |
| 264 | |
| 265 | \f |
| 266 | /*********************************************************************** |
| 267 | Glyphs |
| 268 | ***********************************************************************/ |
| 269 | |
| 270 | /* Enumeration of glyph types. Glyph structures contain a type field |
| 271 | containing one of the enumerators defined here. */ |
| 272 | |
| 273 | enum glyph_type |
| 274 | { |
| 275 | /* Glyph describes a character. */ |
| 276 | CHAR_GLYPH, |
| 277 | |
| 278 | /* Glyph describes a composition sequence. */ |
| 279 | COMPOSITE_GLYPH, |
| 280 | |
| 281 | /* Glyph describes an image. */ |
| 282 | IMAGE_GLYPH, |
| 283 | |
| 284 | /* Glyph is a space of fractional width and/or height. */ |
| 285 | STRETCH_GLYPH |
| 286 | }; |
| 287 | |
| 288 | |
| 289 | /* Structure describing how to use partial glyphs (images slicing) */ |
| 290 | |
| 291 | struct glyph_slice |
| 292 | { |
| 293 | unsigned x : 16; |
| 294 | unsigned y : 16; |
| 295 | unsigned width : 16; |
| 296 | unsigned height : 16; |
| 297 | }; |
| 298 | |
| 299 | |
| 300 | /* Glyphs. |
| 301 | |
| 302 | Be extra careful when changing this structure! Esp. make sure that |
| 303 | functions producing glyphs, like append_glyph, fill ALL of the |
| 304 | glyph structure, and that GLYPH_EQUAL_P compares all |
| 305 | display-relevant members of glyphs (not to imply that these are the |
| 306 | only things to check when you add a member). */ |
| 307 | |
| 308 | struct glyph |
| 309 | { |
| 310 | /* Position from which this glyph was drawn. If `object' below is a |
| 311 | Lisp string, this is a position in that string. If it is a |
| 312 | buffer, this is a position in that buffer. A value of -1 |
| 313 | together with a null object means glyph is a truncation glyph at |
| 314 | the start of a row. */ |
| 315 | int charpos; |
| 316 | |
| 317 | /* Lisp object source of this glyph. Currently either a buffer or |
| 318 | a string, if the glyph was produced from characters which came from |
| 319 | a buffer or a string; or 0 if the glyph was inserted by redisplay |
| 320 | for its own purposes such as padding. */ |
| 321 | Lisp_Object object; |
| 322 | |
| 323 | /* Width in pixels. */ |
| 324 | short pixel_width; |
| 325 | |
| 326 | /* Ascent and descent in pixels. */ |
| 327 | short ascent, descent; |
| 328 | |
| 329 | /* Vertical offset. If < 0, the glyph is displayed raised, if > 0 |
| 330 | the glyph is displayed lowered. */ |
| 331 | short voffset; |
| 332 | |
| 333 | /* Which kind of glyph this is---character, image etc. Value |
| 334 | should be an enumerator of type enum glyph_type. */ |
| 335 | unsigned type : 2; |
| 336 | |
| 337 | /* 1 means this glyph was produced from multibyte text. Zero |
| 338 | means it was produced from unibyte text, i.e. charsets aren't |
| 339 | applicable, and encoding is not performed. */ |
| 340 | unsigned multibyte_p : 1; |
| 341 | |
| 342 | /* Non-zero means draw a box line at the left or right side of this |
| 343 | glyph. This is part of the implementation of the face attribute |
| 344 | `:box'. */ |
| 345 | unsigned left_box_line_p : 1; |
| 346 | unsigned right_box_line_p : 1; |
| 347 | |
| 348 | /* Non-zero means this glyph's physical ascent or descent is greater |
| 349 | than its logical ascent/descent, i.e. it may potentially overlap |
| 350 | glyphs above or below it. */ |
| 351 | unsigned overlaps_vertically_p : 1; |
| 352 | |
| 353 | /* 1 means glyph is a padding glyph. Padding glyphs are used for |
| 354 | characters whose visual shape consists of more than one glyph |
| 355 | (e.g. Asian characters). All but the first glyph of such a glyph |
| 356 | sequence have the padding_p flag set. Only used for terminal |
| 357 | frames, and there only to minimize code changes. A better way |
| 358 | would probably be to use the width field of glyphs to express |
| 359 | padding. */ |
| 360 | unsigned padding_p : 1; |
| 361 | |
| 362 | /* 1 means the actual glyph is not available, draw a box instead. |
| 363 | This can happen when a font couldn't be loaded, or a character |
| 364 | doesn't have a glyph in a font. */ |
| 365 | unsigned glyph_not_available_p : 1; |
| 366 | |
| 367 | #define FACE_ID_BITS 21 |
| 368 | |
| 369 | /* Face of the glyph. This is a realized face ID, |
| 370 | an index in the face cache of the frame. */ |
| 371 | unsigned face_id : FACE_ID_BITS; |
| 372 | |
| 373 | /* Type of font used to display the character glyph. May be used to |
| 374 | determine which set of functions to use to obtain font metrics |
| 375 | for the glyph. On W32, value should be an enumerator of the type |
| 376 | w32_char_font_type. Otherwise it equals FONT_TYPE_UNKNOWN. */ |
| 377 | unsigned font_type : 3; |
| 378 | |
| 379 | struct glyph_slice slice; |
| 380 | |
| 381 | /* A union of sub-structures for different glyph types. */ |
| 382 | union |
| 383 | { |
| 384 | /* Character code for character glyphs (type == CHAR_GLYPH). */ |
| 385 | unsigned ch; |
| 386 | |
| 387 | /* Composition ID for composition glyphs (type == COMPOSITION_GLYPH) */ |
| 388 | unsigned cmp_id; |
| 389 | |
| 390 | /* Image ID for image glyphs (type == IMAGE_GLYPH). */ |
| 391 | unsigned img_id; |
| 392 | |
| 393 | /* Sub-structure for type == STRETCH_GLYPH. */ |
| 394 | struct |
| 395 | { |
| 396 | /* The height of the glyph. */ |
| 397 | unsigned height : 16; |
| 398 | |
| 399 | /* The ascent of the glyph. */ |
| 400 | unsigned ascent : 16; |
| 401 | } |
| 402 | stretch; |
| 403 | |
| 404 | /* Used to compare all bit-fields above in one step. */ |
| 405 | unsigned val; |
| 406 | } u; |
| 407 | }; |
| 408 | |
| 409 | |
| 410 | /* Default value of the glyph font_type field. */ |
| 411 | |
| 412 | #define FONT_TYPE_UNKNOWN 0 |
| 413 | |
| 414 | /* Is GLYPH a space? */ |
| 415 | |
| 416 | #define CHAR_GLYPH_SPACE_P(GLYPH) \ |
| 417 | (GLYPH_FROM_CHAR_GLYPH ((GLYPH)) == SPACEGLYPH) |
| 418 | |
| 419 | /* Are glyph slices of glyphs *X and *Y equal */ |
| 420 | |
| 421 | #define GLYPH_SLICE_EQUAL_P(X, Y) \ |
| 422 | ((X)->slice.x == (Y)->slice.x \ |
| 423 | && (X)->slice.y == (Y)->slice.y \ |
| 424 | && (X)->slice.width == (Y)->slice.width \ |
| 425 | && (X)->slice.height == (Y)->slice.height) |
| 426 | |
| 427 | /* Are glyphs *X and *Y displayed equal? */ |
| 428 | |
| 429 | #define GLYPH_EQUAL_P(X, Y) \ |
| 430 | ((X)->type == (Y)->type \ |
| 431 | && (X)->u.val == (Y)->u.val \ |
| 432 | && GLYPH_SLICE_EQUAL_P (X, Y) \ |
| 433 | && (X)->face_id == (Y)->face_id \ |
| 434 | && (X)->padding_p == (Y)->padding_p \ |
| 435 | && (X)->left_box_line_p == (Y)->left_box_line_p \ |
| 436 | && (X)->right_box_line_p == (Y)->right_box_line_p \ |
| 437 | && (X)->voffset == (Y)->voffset \ |
| 438 | && (X)->pixel_width == (Y)->pixel_width) |
| 439 | |
| 440 | /* Are character codes, faces, padding_ps of glyphs *X and *Y equal? */ |
| 441 | |
| 442 | #define GLYPH_CHAR_AND_FACE_EQUAL_P(X, Y) \ |
| 443 | ((X)->u.ch == (Y)->u.ch \ |
| 444 | && (X)->face_id == (Y)->face_id \ |
| 445 | && (X)->padding_p == (Y)->padding_p) |
| 446 | |
| 447 | /* Fill a character glyph GLYPH. CODE, FACE_ID, PADDING_P correspond |
| 448 | to the bits defined for the typedef `GLYPH' in lisp.h. */ |
| 449 | |
| 450 | #define SET_CHAR_GLYPH(GLYPH, CODE, FACE_ID, PADDING_P) \ |
| 451 | do \ |
| 452 | { \ |
| 453 | (GLYPH).u.ch = (CODE); \ |
| 454 | (GLYPH).face_id = (FACE_ID); \ |
| 455 | (GLYPH).padding_p = (PADDING_P); \ |
| 456 | } \ |
| 457 | while (0) |
| 458 | |
| 459 | /* Fill a character type glyph GLYPH from a glyph typedef FROM as |
| 460 | defined in lisp.h. */ |
| 461 | |
| 462 | #define SET_CHAR_GLYPH_FROM_GLYPH(GLYPH, FROM) \ |
| 463 | SET_CHAR_GLYPH ((GLYPH), \ |
| 464 | FAST_GLYPH_CHAR ((FROM)), \ |
| 465 | FAST_GLYPH_FACE ((FROM)), \ |
| 466 | 0) |
| 467 | |
| 468 | /* Construct a glyph code from a character glyph GLYPH. If the |
| 469 | character is multibyte, return -1 as we can't use glyph table for a |
| 470 | multibyte character. */ |
| 471 | |
| 472 | #define GLYPH_FROM_CHAR_GLYPH(GLYPH) \ |
| 473 | ((GLYPH).u.ch < 256 \ |
| 474 | ? ((GLYPH).u.ch | ((GLYPH).face_id << CHARACTERBITS)) \ |
| 475 | : -1) |
| 476 | |
| 477 | /* Is GLYPH a padding glyph? */ |
| 478 | |
| 479 | #define CHAR_GLYPH_PADDING_P(GLYPH) (GLYPH).padding_p |
| 480 | |
| 481 | |
| 482 | |
| 483 | \f |
| 484 | /*********************************************************************** |
| 485 | Glyph Pools |
| 486 | ***********************************************************************/ |
| 487 | |
| 488 | /* Glyph Pool. |
| 489 | |
| 490 | Glyph memory for frame-based redisplay is allocated from the heap |
| 491 | in one vector kept in a glyph pool structure which is stored with |
| 492 | the frame. The size of the vector is made large enough to cover |
| 493 | all windows on the frame. |
| 494 | |
| 495 | Both frame and window glyph matrices reference memory from a glyph |
| 496 | pool in frame-based redisplay. |
| 497 | |
| 498 | In window-based redisplay, no glyphs pools exist; windows allocate |
| 499 | and free their glyph memory themselves. */ |
| 500 | |
| 501 | struct glyph_pool |
| 502 | { |
| 503 | /* Vector of glyphs allocated from the heap. */ |
| 504 | struct glyph *glyphs; |
| 505 | |
| 506 | /* Allocated size of `glyphs'. */ |
| 507 | int nglyphs; |
| 508 | |
| 509 | /* Number of rows and columns in a matrix. */ |
| 510 | int nrows, ncolumns; |
| 511 | }; |
| 512 | |
| 513 | |
| 514 | \f |
| 515 | /*********************************************************************** |
| 516 | Glyph Matrix |
| 517 | ***********************************************************************/ |
| 518 | |
| 519 | /* Glyph Matrix. |
| 520 | |
| 521 | Three kinds of glyph matrices exist: |
| 522 | |
| 523 | 1. Frame glyph matrices. These are used for terminal frames whose |
| 524 | redisplay needs a view of the whole screen due to limited terminal |
| 525 | capabilities. Frame matrices are used only in the update phase |
| 526 | of redisplay. They are built in update_frame and not used after |
| 527 | the update has been performed. |
| 528 | |
| 529 | 2. Window glyph matrices on frames having frame glyph matrices. |
| 530 | Such matrices are sub-matrices of their corresponding frame matrix, |
| 531 | i.e. frame glyph matrices and window glyph matrices share the same |
| 532 | glyph memory which is allocated in form of a glyph_pool structure. |
| 533 | Glyph rows in such a window matrix are slices of frame matrix rows. |
| 534 | |
| 535 | 2. Free-standing window glyph matrices managing their own glyph |
| 536 | storage. This form is used in window-based redisplay which |
| 537 | includes variable width and height fonts etc. |
| 538 | |
| 539 | The size of a window's row vector depends on the height of fonts |
| 540 | defined on its frame. It is chosen so that the vector is large |
| 541 | enough to describe all lines in a window when it is displayed in |
| 542 | the smallest possible character size. When new fonts are loaded, |
| 543 | or window sizes change, the row vector is adjusted accordingly. */ |
| 544 | |
| 545 | struct glyph_matrix |
| 546 | { |
| 547 | /* The pool from which glyph memory is allocated, if any. This is |
| 548 | null for frame matrices and for window matrices managing their |
| 549 | own storage. */ |
| 550 | struct glyph_pool *pool; |
| 551 | |
| 552 | /* Vector of glyph row structures. The row at nrows - 1 is reserved |
| 553 | for the mode line. */ |
| 554 | struct glyph_row *rows; |
| 555 | |
| 556 | /* Number of elements allocated for the vector rows above. */ |
| 557 | int rows_allocated; |
| 558 | |
| 559 | /* The number of rows used by the window if all lines were displayed |
| 560 | with the smallest possible character height. */ |
| 561 | int nrows; |
| 562 | |
| 563 | /* Origin within the frame matrix if this is a window matrix on a |
| 564 | frame having a frame matrix. Both values are zero for |
| 565 | window-based redisplay. */ |
| 566 | int matrix_x, matrix_y; |
| 567 | |
| 568 | /* Width and height of the matrix in columns and rows. */ |
| 569 | int matrix_w, matrix_h; |
| 570 | |
| 571 | /* If this structure describes a window matrix of window W, |
| 572 | window_left_col is the value of W->left_col, window_top_line the |
| 573 | value of W->top_line, window_height and window_width are width and |
| 574 | height of W, as returned by window_box, and window_vscroll is the |
| 575 | value of W->vscroll at the time the matrix was last adjusted. |
| 576 | Only set for window-based redisplay. */ |
| 577 | int window_left_col, window_top_line; |
| 578 | int window_height, window_width; |
| 579 | int window_vscroll; |
| 580 | |
| 581 | /* Number of glyphs reserved for left and right marginal areas when |
| 582 | the matrix was last adjusted. */ |
| 583 | int left_margin_glyphs, right_margin_glyphs; |
| 584 | |
| 585 | /* Flag indicating that scrolling should not be tried in |
| 586 | update_window. This flag is set by functions like try_window_id |
| 587 | which do their own scrolling. */ |
| 588 | unsigned no_scrolling_p : 1; |
| 589 | |
| 590 | /* Non-zero means window displayed in this matrix has a top mode |
| 591 | line. */ |
| 592 | unsigned header_line_p : 1; |
| 593 | |
| 594 | #ifdef GLYPH_DEBUG |
| 595 | /* A string identifying the method used to display the matrix. */ |
| 596 | char method[512]; |
| 597 | #endif |
| 598 | |
| 599 | /* The buffer this matrix displays. Set in |
| 600 | mark_window_display_accurate_1. */ |
| 601 | struct buffer *buffer; |
| 602 | |
| 603 | /* Values of BEGV and ZV as of last redisplay. Set in |
| 604 | mark_window_display_accurate_1. */ |
| 605 | int begv, zv; |
| 606 | }; |
| 607 | |
| 608 | |
| 609 | /* Check that glyph pointers stored in glyph rows of MATRIX are okay. |
| 610 | This aborts if any pointer is found twice. */ |
| 611 | |
| 612 | #if GLYPH_DEBUG |
| 613 | void check_matrix_pointer_lossage P_ ((struct glyph_matrix *)); |
| 614 | #define CHECK_MATRIX(MATRIX) check_matrix_pointer_lossage ((MATRIX)) |
| 615 | #else |
| 616 | #define CHECK_MATRIX(MATRIX) (void) 0 |
| 617 | #endif |
| 618 | |
| 619 | |
| 620 | \f |
| 621 | /*********************************************************************** |
| 622 | Glyph Rows |
| 623 | ***********************************************************************/ |
| 624 | |
| 625 | /* Area in window glyph matrix. If values are added or removed, the |
| 626 | function mark_object in alloc.c has to be changed. */ |
| 627 | |
| 628 | enum glyph_row_area |
| 629 | { |
| 630 | LEFT_MARGIN_AREA, |
| 631 | TEXT_AREA, |
| 632 | RIGHT_MARGIN_AREA, |
| 633 | LAST_AREA |
| 634 | }; |
| 635 | |
| 636 | |
| 637 | /* Rows of glyphs in a windows or frame glyph matrix. |
| 638 | |
| 639 | Each row is partitioned into three areas. The start and end of |
| 640 | each area is recorded in a pointer as shown below. |
| 641 | |
| 642 | +--------------------+-------------+---------------------+ |
| 643 | | left margin area | text area | right margin area | |
| 644 | +--------------------+-------------+---------------------+ |
| 645 | | | | | |
| 646 | glyphs[LEFT_MARGIN_AREA] glyphs[RIGHT_MARGIN_AREA] |
| 647 | | | |
| 648 | glyphs[TEXT_AREA] | |
| 649 | glyphs[LAST_AREA] |
| 650 | |
| 651 | Rows in frame matrices reference glyph memory allocated in a frame |
| 652 | glyph pool (see the description of struct glyph_pool). Rows in |
| 653 | window matrices on frames having frame matrices reference slices of |
| 654 | the glyphs of corresponding rows in the frame matrix. |
| 655 | |
| 656 | Rows in window matrices on frames having no frame matrices point to |
| 657 | glyphs allocated from the heap via xmalloc; |
| 658 | glyphs[LEFT_MARGIN_AREA] is the start address of the allocated |
| 659 | glyph structure array. */ |
| 660 | |
| 661 | struct glyph_row |
| 662 | { |
| 663 | /* Pointers to beginnings of areas. The end of an area A is found at |
| 664 | A + 1 in the vector. The last element of the vector is the end |
| 665 | of the whole row. |
| 666 | |
| 667 | Kludge alert: Even if used[TEXT_AREA] == 0, glyphs[TEXT_AREA][0]'s |
| 668 | position field is used. It is -1 if this row does not correspond |
| 669 | to any text; it is some buffer position if the row corresponds to |
| 670 | an empty display line that displays a line end. This is what old |
| 671 | redisplay used to do. (Except in code for terminal frames, this |
| 672 | kludge is no longer used, I believe. --gerd). |
| 673 | |
| 674 | See also start, end, displays_text_p and ends_at_zv_p for cleaner |
| 675 | ways to do it. The special meaning of positions 0 and -1 will be |
| 676 | removed some day, so don't use it in new code. */ |
| 677 | struct glyph *glyphs[1 + LAST_AREA]; |
| 678 | |
| 679 | /* Number of glyphs actually filled in areas. */ |
| 680 | short used[LAST_AREA]; |
| 681 | |
| 682 | /* Window-relative x and y-position of the top-left corner of this |
| 683 | row. If y < 0, this means that abs (y) pixels of the row are |
| 684 | invisible because it is partially visible at the top of a window. |
| 685 | If x < 0, this means that abs (x) pixels of the first glyph of |
| 686 | the text area of the row are invisible because the glyph is |
| 687 | partially visible. */ |
| 688 | int x, y; |
| 689 | |
| 690 | /* Width of the row in pixels without taking face extension at the |
| 691 | end of the row into account, and without counting truncation |
| 692 | and continuation glyphs at the end of a row on ttys. */ |
| 693 | int pixel_width; |
| 694 | |
| 695 | /* Logical ascent/height of this line. The value of ascent is zero |
| 696 | and height is 1 on terminal frames. */ |
| 697 | int ascent, height; |
| 698 | |
| 699 | /* Physical ascent/height of this line. If max_ascent > ascent, |
| 700 | this line overlaps the line above it on the display. Otherwise, |
| 701 | if max_height > height, this line overlaps the line beneath it. */ |
| 702 | int phys_ascent, phys_height; |
| 703 | |
| 704 | /* Portion of row that is visible. Partially visible rows may be |
| 705 | found at the top and bottom of a window. This is 1 for tty |
| 706 | frames. It may be < 0 in case of completely invisible rows. */ |
| 707 | int visible_height; |
| 708 | |
| 709 | /* Extra line spacing added after this row. Do not consider this |
| 710 | in last row when checking if row is fully visible. */ |
| 711 | int extra_line_spacing; |
| 712 | |
| 713 | /* Hash code. This hash code is available as soon as the row |
| 714 | is constructed, i.e. after a call to display_line. */ |
| 715 | unsigned hash; |
| 716 | |
| 717 | /* First position in this row. This is the text position, including |
| 718 | overlay position information etc, where the display of this row |
| 719 | started, and can thus be less the position of the first glyph |
| 720 | (e.g. due to invisible text or horizontal scrolling). */ |
| 721 | struct display_pos start; |
| 722 | |
| 723 | /* Text position at the end of this row. This is the position after |
| 724 | the last glyph on this row. It can be greater than the last |
| 725 | glyph position + 1, due to truncation, invisible text etc. In an |
| 726 | up-to-date display, this should always be equal to the start |
| 727 | position of the next row. */ |
| 728 | struct display_pos end; |
| 729 | |
| 730 | /* Non-zero means the overlay arrow bitmap is on this line. |
| 731 | -1 means use default overlay arrow bitmap, else |
| 732 | it specifies actual fringe bitmap number. */ |
| 733 | int overlay_arrow_bitmap; |
| 734 | |
| 735 | /* Left fringe bitmap number (enum fringe_bitmap_type). */ |
| 736 | unsigned left_user_fringe_bitmap : FRINGE_ID_BITS; |
| 737 | |
| 738 | /* Right fringe bitmap number (enum fringe_bitmap_type). */ |
| 739 | unsigned right_user_fringe_bitmap : FRINGE_ID_BITS; |
| 740 | |
| 741 | /* Left fringe bitmap number (enum fringe_bitmap_type). */ |
| 742 | unsigned left_fringe_bitmap : FRINGE_ID_BITS; |
| 743 | |
| 744 | /* Right fringe bitmap number (enum fringe_bitmap_type). */ |
| 745 | unsigned right_fringe_bitmap : FRINGE_ID_BITS; |
| 746 | |
| 747 | /* Face of the left fringe glyph. */ |
| 748 | unsigned left_user_fringe_face_id : FACE_ID_BITS; |
| 749 | |
| 750 | /* Face of the right fringe glyph. */ |
| 751 | unsigned right_user_fringe_face_id : FACE_ID_BITS; |
| 752 | |
| 753 | /* Face of the left fringe glyph. */ |
| 754 | unsigned left_fringe_face_id : FACE_ID_BITS; |
| 755 | |
| 756 | /* Face of the right fringe glyph. */ |
| 757 | unsigned right_fringe_face_id : FACE_ID_BITS; |
| 758 | |
| 759 | /* 1 means that we must draw the bitmaps of this row. */ |
| 760 | unsigned redraw_fringe_bitmaps_p : 1; |
| 761 | |
| 762 | /* In a desired matrix, 1 means that this row must be updated. In a |
| 763 | current matrix, 0 means that the row has been invalidated, i.e. |
| 764 | the row's contents do not agree with what is visible on the |
| 765 | screen. */ |
| 766 | unsigned enabled_p : 1; |
| 767 | |
| 768 | /* 1 means row displays a text line that is truncated on the left or |
| 769 | right side. */ |
| 770 | unsigned truncated_on_left_p : 1; |
| 771 | unsigned truncated_on_right_p : 1; |
| 772 | |
| 773 | /* 1 means that this row displays a continued line, i.e. it has a |
| 774 | continuation mark at the right side. */ |
| 775 | unsigned continued_p : 1; |
| 776 | |
| 777 | /* 0 means that this row does not contain any text, i.e. it is |
| 778 | a blank line at the window and buffer end. */ |
| 779 | unsigned displays_text_p : 1; |
| 780 | |
| 781 | /* 1 means that this line ends at ZV. */ |
| 782 | unsigned ends_at_zv_p : 1; |
| 783 | |
| 784 | /* 1 means the face of the last glyph in the text area is drawn to |
| 785 | the right end of the window. This flag is used in |
| 786 | update_text_area to optimize clearing to the end of the area. */ |
| 787 | unsigned fill_line_p : 1; |
| 788 | |
| 789 | /* Non-zero means display a bitmap on X frames indicating that this |
| 790 | line contains no text and ends in ZV. */ |
| 791 | unsigned indicate_empty_line_p : 1; |
| 792 | |
| 793 | /* 1 means this row contains glyphs that overlap each other because |
| 794 | of lbearing or rbearing. */ |
| 795 | unsigned contains_overlapping_glyphs_p : 1; |
| 796 | |
| 797 | /* 1 means this row is as wide as the window it is displayed in, including |
| 798 | scroll bars, fringes, and internal borders. This also |
| 799 | implies that the row doesn't have marginal areas. */ |
| 800 | unsigned full_width_p : 1; |
| 801 | |
| 802 | /* Non-zero means row is a mode or header-line. */ |
| 803 | unsigned mode_line_p : 1; |
| 804 | |
| 805 | /* 1 in a current row means this row is overlapped by another row. */ |
| 806 | unsigned overlapped_p : 1; |
| 807 | |
| 808 | /* 1 means this line ends in the middle of a character consisting |
| 809 | of more than one glyph. Some glyphs have been put in this row, |
| 810 | the rest are put in rows below this one. */ |
| 811 | unsigned ends_in_middle_of_char_p : 1; |
| 812 | |
| 813 | /* 1 means this line starts in the middle of a character consisting |
| 814 | of more than one glyph. Some glyphs have been put in the |
| 815 | previous row, the rest are put in this row. */ |
| 816 | unsigned starts_in_middle_of_char_p : 1; |
| 817 | |
| 818 | /* 1 in a current row means this row overlaps others. */ |
| 819 | unsigned overlapping_p : 1; |
| 820 | |
| 821 | /* 1 means some glyphs in this row are displayed in mouse-face. */ |
| 822 | unsigned mouse_face_p : 1; |
| 823 | |
| 824 | /* 1 means this row was ended by a newline from a string. */ |
| 825 | unsigned ends_in_newline_from_string_p : 1; |
| 826 | |
| 827 | /* 1 means this row width is exactly the width of the window, and the |
| 828 | final newline character is hidden in the right fringe. */ |
| 829 | unsigned exact_window_width_line_p : 1; |
| 830 | |
| 831 | /* 1 means this row currently shows the cursor in the right fringe. */ |
| 832 | unsigned cursor_in_fringe_p : 1; |
| 833 | |
| 834 | /* 1 means the last glyph in the row is part of an ellipsis. */ |
| 835 | unsigned ends_in_ellipsis_p : 1; |
| 836 | |
| 837 | /* Non-zero means display a bitmap on X frames indicating that this |
| 838 | the first line of the buffer. */ |
| 839 | unsigned indicate_bob_p : 1; |
| 840 | |
| 841 | /* Non-zero means display a bitmap on X frames indicating that this |
| 842 | the top line of the window, but not start of the buffer. */ |
| 843 | unsigned indicate_top_line_p : 1; |
| 844 | |
| 845 | /* Non-zero means display a bitmap on X frames indicating that this |
| 846 | the last line of the buffer. */ |
| 847 | unsigned indicate_eob_p : 1; |
| 848 | |
| 849 | /* Non-zero means display a bitmap on X frames indicating that this |
| 850 | the bottom line of the window, but not end of the buffer. */ |
| 851 | unsigned indicate_bottom_line_p : 1; |
| 852 | |
| 853 | /* Continuation lines width at the start of the row. */ |
| 854 | int continuation_lines_width; |
| 855 | }; |
| 856 | |
| 857 | |
| 858 | /* Get a pointer to row number ROW in matrix MATRIX. If GLYPH_DEBUG |
| 859 | is defined to a non-zero value, the function matrix_row checks that |
| 860 | we don't try to access rows that are out of bounds. */ |
| 861 | |
| 862 | #if GLYPH_DEBUG |
| 863 | struct glyph_row *matrix_row P_ ((struct glyph_matrix *, int)); |
| 864 | #define MATRIX_ROW(MATRIX, ROW) matrix_row ((MATRIX), (ROW)) |
| 865 | #else |
| 866 | #define MATRIX_ROW(MATRIX, ROW) ((MATRIX)->rows + (ROW)) |
| 867 | #endif |
| 868 | |
| 869 | /* Return a pointer to the row reserved for the mode line in MATRIX. |
| 870 | Row MATRIX->nrows - 1 is always reserved for the mode line. */ |
| 871 | |
| 872 | #define MATRIX_MODE_LINE_ROW(MATRIX) \ |
| 873 | ((MATRIX)->rows + (MATRIX)->nrows - 1) |
| 874 | |
| 875 | /* Return a pointer to the row reserved for the header line in MATRIX. |
| 876 | This is always the first row in MATRIX because that's the only |
| 877 | way that works in frame-based redisplay. */ |
| 878 | |
| 879 | #define MATRIX_HEADER_LINE_ROW(MATRIX) (MATRIX)->rows |
| 880 | |
| 881 | /* Return a pointer to first row in MATRIX used for text display. */ |
| 882 | |
| 883 | #define MATRIX_FIRST_TEXT_ROW(MATRIX) \ |
| 884 | ((MATRIX)->rows->mode_line_p ? (MATRIX)->rows + 1 : (MATRIX)->rows) |
| 885 | |
| 886 | /* Return a pointer to the first glyph in the text area of a row. |
| 887 | MATRIX is the glyph matrix accessed, and ROW is the row index in |
| 888 | MATRIX. */ |
| 889 | |
| 890 | #define MATRIX_ROW_GLYPH_START(MATRIX, ROW) \ |
| 891 | (MATRIX_ROW ((MATRIX), (ROW))->glyphs[TEXT_AREA]) |
| 892 | |
| 893 | /* Return the number of used glyphs in the text area of a row. */ |
| 894 | |
| 895 | #define MATRIX_ROW_USED(MATRIX, ROW) \ |
| 896 | (MATRIX_ROW ((MATRIX), (ROW))->used[TEXT_AREA]) |
| 897 | |
| 898 | /* Return the character/ byte position at which the display of ROW |
| 899 | starts. */ |
| 900 | |
| 901 | #define MATRIX_ROW_START_CHARPOS(ROW) ((ROW)->start.pos.charpos) |
| 902 | #define MATRIX_ROW_START_BYTEPOS(ROW) ((ROW)->start.pos.bytepos) |
| 903 | |
| 904 | /* Return the character/ byte position at which ROW ends. */ |
| 905 | |
| 906 | #define MATRIX_ROW_END_CHARPOS(ROW) ((ROW)->end.pos.charpos) |
| 907 | #define MATRIX_ROW_END_BYTEPOS(ROW) ((ROW)->end.pos.bytepos) |
| 908 | |
| 909 | /* Return the vertical position of ROW in MATRIX. */ |
| 910 | |
| 911 | #define MATRIX_ROW_VPOS(ROW, MATRIX) ((ROW) - (MATRIX)->rows) |
| 912 | |
| 913 | /* Return the last glyph row + 1 in MATRIX on window W reserved for |
| 914 | text. If W has a mode line, the last row in the matrix is reserved |
| 915 | for it. */ |
| 916 | |
| 917 | #define MATRIX_BOTTOM_TEXT_ROW(MATRIX, W) \ |
| 918 | ((MATRIX)->rows \ |
| 919 | + (MATRIX)->nrows \ |
| 920 | - (WINDOW_WANTS_MODELINE_P ((W)) ? 1 : 0)) |
| 921 | |
| 922 | /* Non-zero if the face of the last glyph in ROW's text area has |
| 923 | to be drawn to the end of the text area. */ |
| 924 | |
| 925 | #define MATRIX_ROW_EXTENDS_FACE_P(ROW) ((ROW)->fill_line_p) |
| 926 | |
| 927 | /* Set and query the enabled_p flag of glyph row ROW in MATRIX. */ |
| 928 | |
| 929 | #define SET_MATRIX_ROW_ENABLED_P(MATRIX, ROW, VALUE) \ |
| 930 | (MATRIX_ROW ((MATRIX), (ROW))->enabled_p = (VALUE) != 0) |
| 931 | |
| 932 | #define MATRIX_ROW_ENABLED_P(MATRIX, ROW) \ |
| 933 | (MATRIX_ROW ((MATRIX), (ROW))->enabled_p) |
| 934 | |
| 935 | /* Non-zero if ROW displays text. Value is non-zero if the row is |
| 936 | blank but displays a line end. */ |
| 937 | |
| 938 | #define MATRIX_ROW_DISPLAYS_TEXT_P(ROW) ((ROW)->displays_text_p) |
| 939 | |
| 940 | |
| 941 | /* Helper macros */ |
| 942 | |
| 943 | #define MR_PARTIALLY_VISIBLE(ROW) \ |
| 944 | ((ROW)->height != (ROW)->visible_height) |
| 945 | |
| 946 | #define MR_PARTIALLY_VISIBLE_AT_TOP(W, ROW) \ |
| 947 | ((ROW)->y < WINDOW_HEADER_LINE_HEIGHT ((W))) |
| 948 | |
| 949 | #define MR_PARTIALLY_VISIBLE_AT_BOTTOM(W, ROW) \ |
| 950 | (((ROW)->y + (ROW)->height - (ROW)->extra_line_spacing) \ |
| 951 | > WINDOW_BOX_HEIGHT_NO_MODE_LINE ((W))) |
| 952 | |
| 953 | /* Non-zero if ROW is not completely visible in window W. */ |
| 954 | |
| 955 | #define MATRIX_ROW_PARTIALLY_VISIBLE_P(W, ROW) \ |
| 956 | (MR_PARTIALLY_VISIBLE ((ROW)) \ |
| 957 | && (MR_PARTIALLY_VISIBLE_AT_TOP ((W), (ROW)) \ |
| 958 | || MR_PARTIALLY_VISIBLE_AT_BOTTOM ((W), (ROW)))) |
| 959 | |
| 960 | |
| 961 | |
| 962 | /* Non-zero if ROW is partially visible at the top of window W. */ |
| 963 | |
| 964 | #define MATRIX_ROW_PARTIALLY_VISIBLE_AT_TOP_P(W, ROW) \ |
| 965 | (MR_PARTIALLY_VISIBLE ((ROW)) \ |
| 966 | && MR_PARTIALLY_VISIBLE_AT_TOP ((W), (ROW))) |
| 967 | |
| 968 | /* Non-zero if ROW is partially visible at the bottom of window W. */ |
| 969 | |
| 970 | #define MATRIX_ROW_PARTIALLY_VISIBLE_AT_BOTTOM_P(W, ROW) \ |
| 971 | (MR_PARTIALLY_VISIBLE ((ROW)) \ |
| 972 | && MR_PARTIALLY_VISIBLE_AT_BOTTOM ((W), (ROW))) |
| 973 | |
| 974 | /* Return the bottom Y + 1 of ROW. */ |
| 975 | |
| 976 | #define MATRIX_ROW_BOTTOM_Y(ROW) ((ROW)->y + (ROW)->height) |
| 977 | |
| 978 | /* Is ROW the last visible one in the display described by the |
| 979 | iterator structure pointed to by IT?. */ |
| 980 | |
| 981 | #define MATRIX_ROW_LAST_VISIBLE_P(ROW, IT) \ |
| 982 | (MATRIX_ROW_BOTTOM_Y ((ROW)) >= (IT)->last_visible_y) |
| 983 | |
| 984 | /* Non-zero if ROW displays a continuation line. */ |
| 985 | |
| 986 | #define MATRIX_ROW_CONTINUATION_LINE_P(ROW) \ |
| 987 | ((ROW)->continuation_lines_width > 0) |
| 988 | |
| 989 | /* Non-zero if ROW ends in the middle of a character. This is the |
| 990 | case for continued lines showing only part of a display table entry |
| 991 | or a control char, or an overlay string. */ |
| 992 | |
| 993 | #define MATRIX_ROW_ENDS_IN_MIDDLE_OF_CHAR_P(ROW) \ |
| 994 | ((ROW)->end.dpvec_index > 0 \ |
| 995 | || (ROW)->end.overlay_string_index >= 0 \ |
| 996 | || (ROW)->ends_in_middle_of_char_p) |
| 997 | |
| 998 | /* Non-zero if ROW ends in the middle of an overlay string. */ |
| 999 | |
| 1000 | #define MATRIX_ROW_ENDS_IN_OVERLAY_STRING_P(ROW) \ |
| 1001 | ((ROW)->end.overlay_string_index >= 0) |
| 1002 | |
| 1003 | /* Non-zero if ROW starts in the middle of a character. See above. */ |
| 1004 | |
| 1005 | #define MATRIX_ROW_STARTS_IN_MIDDLE_OF_CHAR_P(ROW) \ |
| 1006 | ((ROW)->start.dpvec_index > 0 \ |
| 1007 | || (ROW)->starts_in_middle_of_char_p \ |
| 1008 | || ((ROW)->start.overlay_string_index >= 0 \ |
| 1009 | && (ROW)->start.string_pos.charpos > 0)) |
| 1010 | |
| 1011 | /* Non-zero means ROW overlaps its predecessor. */ |
| 1012 | |
| 1013 | #define MATRIX_ROW_OVERLAPS_PRED_P(ROW) \ |
| 1014 | ((ROW)->phys_ascent > (ROW)->ascent) |
| 1015 | |
| 1016 | /* Non-zero means ROW overlaps its successor. */ |
| 1017 | |
| 1018 | #define MATRIX_ROW_OVERLAPS_SUCC_P(ROW) \ |
| 1019 | ((ROW)->phys_height - (ROW)->phys_ascent \ |
| 1020 | > (ROW)->height - (ROW)->ascent) |
| 1021 | |
| 1022 | /* Non-zero means that fonts have been loaded since the last glyph |
| 1023 | matrix adjustments. The function redisplay_internal adjusts glyph |
| 1024 | matrices when this flag is non-zero. */ |
| 1025 | |
| 1026 | extern int fonts_changed_p; |
| 1027 | |
| 1028 | /* A glyph for a space. */ |
| 1029 | |
| 1030 | extern struct glyph space_glyph; |
| 1031 | |
| 1032 | /* Frame being updated by update_window/update_frame. */ |
| 1033 | |
| 1034 | extern struct frame *updating_frame; |
| 1035 | |
| 1036 | /* Window being updated by update_window. This is non-null as long as |
| 1037 | update_window has not finished, and null otherwise. It's role is |
| 1038 | analogous to updating_frame. */ |
| 1039 | |
| 1040 | extern struct window *updated_window; |
| 1041 | |
| 1042 | /* Glyph row and area updated by update_window_line. */ |
| 1043 | |
| 1044 | extern struct glyph_row *updated_row; |
| 1045 | extern int updated_area; |
| 1046 | |
| 1047 | /* Non-zero means reading single-character input with prompt so put |
| 1048 | cursor on mini-buffer after the prompt. Positive means at end of |
| 1049 | text in echo area; negative means at beginning of line. */ |
| 1050 | |
| 1051 | extern int cursor_in_echo_area; |
| 1052 | |
| 1053 | /* Non-zero means last display completed. Zero means it was |
| 1054 | preempted. */ |
| 1055 | |
| 1056 | extern int display_completed; |
| 1057 | |
| 1058 | /* Non-zero means redisplay has been performed directly (see also |
| 1059 | direct_output_for_insert and direct_output_forward_char), so that |
| 1060 | no further updating has to be performed. The function |
| 1061 | redisplay_internal checks this flag, and does nothing but reset it |
| 1062 | to zero if it is non-zero. */ |
| 1063 | |
| 1064 | extern int redisplay_performed_directly_p; |
| 1065 | |
| 1066 | /* A temporary storage area, including a row of glyphs. Initialized |
| 1067 | in xdisp.c. Used for various purposes, as an example see |
| 1068 | direct_output_for_insert. */ |
| 1069 | |
| 1070 | extern struct glyph_row scratch_glyph_row; |
| 1071 | |
| 1072 | |
| 1073 | \f |
| 1074 | /************************************************************************ |
| 1075 | Glyph Strings |
| 1076 | ************************************************************************/ |
| 1077 | |
| 1078 | /* Enumeration for overriding/changing the face to use for drawing |
| 1079 | glyphs in draw_glyphs. */ |
| 1080 | |
| 1081 | enum draw_glyphs_face |
| 1082 | { |
| 1083 | DRAW_NORMAL_TEXT, |
| 1084 | DRAW_INVERSE_VIDEO, |
| 1085 | DRAW_CURSOR, |
| 1086 | DRAW_MOUSE_FACE, |
| 1087 | DRAW_IMAGE_RAISED, |
| 1088 | DRAW_IMAGE_SUNKEN |
| 1089 | }; |
| 1090 | |
| 1091 | #ifdef HAVE_WINDOW_SYSTEM |
| 1092 | |
| 1093 | /* A sequence of glyphs to be drawn in the same face. */ |
| 1094 | |
| 1095 | struct glyph_string |
| 1096 | { |
| 1097 | /* X-origin of the string. */ |
| 1098 | int x; |
| 1099 | |
| 1100 | /* Y-origin and y-position of the base line of this string. */ |
| 1101 | int y, ybase; |
| 1102 | |
| 1103 | /* The width of the string, not including a face extension. */ |
| 1104 | int width; |
| 1105 | |
| 1106 | /* The width of the string, including a face extension. */ |
| 1107 | int background_width; |
| 1108 | |
| 1109 | /* The height of this string. This is the height of the line this |
| 1110 | string is drawn in, and can be different from the height of the |
| 1111 | font the string is drawn in. */ |
| 1112 | int height; |
| 1113 | |
| 1114 | /* Number of pixels this string overwrites in front of its x-origin. |
| 1115 | This number is zero if the string has an lbearing >= 0; it is |
| 1116 | -lbearing, if the string has an lbearing < 0. */ |
| 1117 | int left_overhang; |
| 1118 | |
| 1119 | /* Number of pixels this string overwrites past its right-most |
| 1120 | nominal x-position, i.e. x + width. Zero if the string's |
| 1121 | rbearing is <= its nominal width, rbearing - width otherwise. */ |
| 1122 | int right_overhang; |
| 1123 | |
| 1124 | /* The frame on which the glyph string is drawn. */ |
| 1125 | struct frame *f; |
| 1126 | |
| 1127 | /* The window on which the glyph string is drawn. */ |
| 1128 | struct window *w; |
| 1129 | |
| 1130 | /* X display and window for convenience. */ |
| 1131 | Display *display; |
| 1132 | Window window; |
| 1133 | |
| 1134 | /* The glyph row for which this string was built. It determines the |
| 1135 | y-origin and height of the string. */ |
| 1136 | struct glyph_row *row; |
| 1137 | |
| 1138 | /* The area within row. */ |
| 1139 | enum glyph_row_area area; |
| 1140 | |
| 1141 | /* Characters to be drawn, and number of characters. */ |
| 1142 | XChar2b *char2b; |
| 1143 | int nchars; |
| 1144 | |
| 1145 | /* A face-override for drawing cursors, mouse face and similar. */ |
| 1146 | enum draw_glyphs_face hl; |
| 1147 | |
| 1148 | /* Face in which this string is to be drawn. */ |
| 1149 | struct face *face; |
| 1150 | |
| 1151 | /* Font in which this string is to be drawn. */ |
| 1152 | XFontStruct *font; |
| 1153 | |
| 1154 | /* Font info for this string. */ |
| 1155 | struct font_info *font_info; |
| 1156 | |
| 1157 | /* Non-null means this string describes (part of) a composition. |
| 1158 | All characters from char2b are drawn composed. */ |
| 1159 | struct composition *cmp; |
| 1160 | |
| 1161 | /* Index of this glyph string's first character in the glyph |
| 1162 | definition of CMP. If this is zero, this glyph string describes |
| 1163 | the first character of a composition. */ |
| 1164 | int gidx; |
| 1165 | |
| 1166 | /* 1 means this glyph strings face has to be drawn to the right end |
| 1167 | of the window's drawing area. */ |
| 1168 | unsigned extends_to_end_of_line_p : 1; |
| 1169 | |
| 1170 | /* 1 means the background of this string has been drawn. */ |
| 1171 | unsigned background_filled_p : 1; |
| 1172 | |
| 1173 | /* 1 means glyph string must be drawn with 16-bit functions. */ |
| 1174 | unsigned two_byte_p : 1; |
| 1175 | |
| 1176 | /* 1 means that the original font determined for drawing this glyph |
| 1177 | string could not be loaded. The member `font' has been set to |
| 1178 | the frame's default font in this case. */ |
| 1179 | unsigned font_not_found_p : 1; |
| 1180 | |
| 1181 | /* 1 means that the face in which this glyph string is drawn has a |
| 1182 | stipple pattern. */ |
| 1183 | unsigned stippled_p : 1; |
| 1184 | |
| 1185 | #define OVERLAPS_PRED (1 << 0) |
| 1186 | #define OVERLAPS_SUCC (1 << 1) |
| 1187 | #define OVERLAPS_BOTH (OVERLAPS_PRED | OVERLAPS_SUCC) |
| 1188 | #define OVERLAPS_ERASED_CURSOR (1 << 2) |
| 1189 | /* Non-zero means only the foreground of this glyph string must be |
| 1190 | drawn, and we should use the physical height of the line this |
| 1191 | glyph string appears in as clip rect. If the value is |
| 1192 | OVERLAPS_ERASED_CURSOR, the clip rect is restricted to the rect |
| 1193 | of the erased cursor. OVERLAPS_PRED and OVERLAPS_SUCC mean we |
| 1194 | draw overlaps with the preceding and the succeeding rows, |
| 1195 | respectively. */ |
| 1196 | unsigned for_overlaps : 3; |
| 1197 | |
| 1198 | /* The GC to use for drawing this glyph string. */ |
| 1199 | #if defined(HAVE_X_WINDOWS) || defined(MAC_OS) |
| 1200 | GC gc; |
| 1201 | #endif |
| 1202 | #if defined(HAVE_NTGUI) |
| 1203 | XGCValues *gc; |
| 1204 | HDC hdc; |
| 1205 | #endif |
| 1206 | |
| 1207 | /* A pointer to the first glyph in the string. This glyph |
| 1208 | corresponds to char2b[0]. Needed to draw rectangles if |
| 1209 | font_not_found_p is 1. */ |
| 1210 | struct glyph *first_glyph; |
| 1211 | |
| 1212 | /* Image, if any. */ |
| 1213 | struct image *img; |
| 1214 | |
| 1215 | /* Slice */ |
| 1216 | struct glyph_slice slice; |
| 1217 | |
| 1218 | /* Non-null means the horizontal clipping region starts from the |
| 1219 | left edge of *clip_head, and ends with the right edge of |
| 1220 | *clip_tail, not including their overhangs. */ |
| 1221 | struct glyph_string *clip_head, *clip_tail; |
| 1222 | |
| 1223 | struct glyph_string *next, *prev; |
| 1224 | }; |
| 1225 | |
| 1226 | #endif /* HAVE_WINDOW_SYSTEM */ |
| 1227 | |
| 1228 | \f |
| 1229 | /************************************************************************ |
| 1230 | Display Dimensions |
| 1231 | ************************************************************************/ |
| 1232 | |
| 1233 | /* Return the height of the mode line in glyph matrix MATRIX, or zero |
| 1234 | if not known. This macro is called under circumstances where |
| 1235 | MATRIX might not have been allocated yet. */ |
| 1236 | |
| 1237 | #define MATRIX_MODE_LINE_HEIGHT(MATRIX) \ |
| 1238 | ((MATRIX) && (MATRIX)->rows \ |
| 1239 | ? MATRIX_MODE_LINE_ROW (MATRIX)->height \ |
| 1240 | : 0) |
| 1241 | |
| 1242 | /* Return the height of the header line in glyph matrix MATRIX, or zero |
| 1243 | if not known. This macro is called under circumstances where |
| 1244 | MATRIX might not have been allocated yet. */ |
| 1245 | |
| 1246 | #define MATRIX_HEADER_LINE_HEIGHT(MATRIX) \ |
| 1247 | ((MATRIX) && (MATRIX)->rows \ |
| 1248 | ? MATRIX_HEADER_LINE_ROW (MATRIX)->height \ |
| 1249 | : 0) |
| 1250 | |
| 1251 | /* Return the desired face id for the mode line of a window, depending |
| 1252 | on whether the window is selected or not, or if the window is the |
| 1253 | scrolling window for the currently active minibuffer window. |
| 1254 | |
| 1255 | Due to the way display_mode_lines manipulates with the contents of |
| 1256 | selected_window, this macro needs three arguments: SELW which is |
| 1257 | compared against the current value of selected_window, MBW which is |
| 1258 | compared against minibuf_window (if SELW doesn't match), and SCRW |
| 1259 | which is compared against minibuf_selected_window (if MBW matches). */ |
| 1260 | |
| 1261 | #define CURRENT_MODE_LINE_FACE_ID_3(SELW, MBW, SCRW) \ |
| 1262 | ((!mode_line_in_non_selected_windows \ |
| 1263 | || (SELW) == XWINDOW (selected_window) \ |
| 1264 | || (minibuf_level > 0 \ |
| 1265 | && !NILP (minibuf_selected_window) \ |
| 1266 | && (MBW) == XWINDOW (minibuf_window) \ |
| 1267 | && (SCRW) == XWINDOW (minibuf_selected_window))) \ |
| 1268 | ? MODE_LINE_FACE_ID \ |
| 1269 | : MODE_LINE_INACTIVE_FACE_ID) |
| 1270 | |
| 1271 | |
| 1272 | /* Return the desired face id for the mode line of window W. */ |
| 1273 | |
| 1274 | #define CURRENT_MODE_LINE_FACE_ID(W) \ |
| 1275 | (CURRENT_MODE_LINE_FACE_ID_3((W), XWINDOW (selected_window), (W))) |
| 1276 | |
| 1277 | /* Return the current height of the mode line of window W. If not |
| 1278 | known from current_mode_line_height, look at W's current glyph |
| 1279 | matrix, or return a default based on the height of the font of the |
| 1280 | face `mode-line'. */ |
| 1281 | |
| 1282 | #define CURRENT_MODE_LINE_HEIGHT(W) \ |
| 1283 | (current_mode_line_height >= 0 \ |
| 1284 | ? current_mode_line_height \ |
| 1285 | : (MATRIX_MODE_LINE_HEIGHT ((W)->current_matrix) \ |
| 1286 | ? MATRIX_MODE_LINE_HEIGHT ((W)->current_matrix) \ |
| 1287 | : estimate_mode_line_height (XFRAME ((W)->frame), \ |
| 1288 | CURRENT_MODE_LINE_FACE_ID (W)))) |
| 1289 | |
| 1290 | /* Return the current height of the header line of window W. If not |
| 1291 | known from current_header_line_height, look at W's current glyph |
| 1292 | matrix, or return an estimation based on the height of the font of |
| 1293 | the face `header-line'. */ |
| 1294 | |
| 1295 | #define CURRENT_HEADER_LINE_HEIGHT(W) \ |
| 1296 | (current_header_line_height >= 0 \ |
| 1297 | ? current_header_line_height \ |
| 1298 | : (MATRIX_HEADER_LINE_HEIGHT ((W)->current_matrix) \ |
| 1299 | ? MATRIX_HEADER_LINE_HEIGHT ((W)->current_matrix) \ |
| 1300 | : estimate_mode_line_height (XFRAME ((W)->frame), \ |
| 1301 | HEADER_LINE_FACE_ID))) |
| 1302 | |
| 1303 | /* Return the height of the desired mode line of window W. */ |
| 1304 | |
| 1305 | #define DESIRED_MODE_LINE_HEIGHT(W) \ |
| 1306 | MATRIX_MODE_LINE_HEIGHT ((W)->desired_matrix) |
| 1307 | |
| 1308 | /* Return the height of the desired header line of window W. */ |
| 1309 | |
| 1310 | #define DESIRED_HEADER_LINE_HEIGHT(W) \ |
| 1311 | MATRIX_HEADER_LINE_HEIGHT ((W)->desired_matrix) |
| 1312 | |
| 1313 | /* Value is non-zero if window W wants a mode line. */ |
| 1314 | |
| 1315 | #define WINDOW_WANTS_MODELINE_P(W) \ |
| 1316 | (!MINI_WINDOW_P ((W)) \ |
| 1317 | && !(W)->pseudo_window_p \ |
| 1318 | && FRAME_WANTS_MODELINE_P (XFRAME (WINDOW_FRAME ((W)))) \ |
| 1319 | && BUFFERP ((W)->buffer) \ |
| 1320 | && !NILP (XBUFFER ((W)->buffer)->mode_line_format) \ |
| 1321 | && WINDOW_TOTAL_LINES (W) > 1) |
| 1322 | |
| 1323 | /* Value is non-zero if window W wants a header line. */ |
| 1324 | |
| 1325 | #define WINDOW_WANTS_HEADER_LINE_P(W) \ |
| 1326 | (!MINI_WINDOW_P ((W)) \ |
| 1327 | && !(W)->pseudo_window_p \ |
| 1328 | && FRAME_WANTS_MODELINE_P (XFRAME (WINDOW_FRAME ((W)))) \ |
| 1329 | && BUFFERP ((W)->buffer) \ |
| 1330 | && !NILP (XBUFFER ((W)->buffer)->header_line_format) \ |
| 1331 | && WINDOW_TOTAL_LINES (W) > 1 + !NILP (XBUFFER ((W)->buffer)->mode_line_format)) |
| 1332 | |
| 1333 | |
| 1334 | /* Return proper value to be used as baseline offset of font that has |
| 1335 | ASCENT and DESCENT to draw characters by the font at the vertical |
| 1336 | center of the line of frame F. |
| 1337 | |
| 1338 | Here, our task is to find the value of BOFF in the following figure; |
| 1339 | |
| 1340 | -------------------------+-----------+- |
| 1341 | -+-+---------+-+ | | |
| 1342 | | | | | | | |
| 1343 | | | | | F_ASCENT F_HEIGHT |
| 1344 | | | | ASCENT | | |
| 1345 | HEIGHT | | | | | |
| 1346 | | | |-|-+------+-----------|------- baseline |
| 1347 | | | | | BOFF | | |
| 1348 | | |---------|-+-+ | | |
| 1349 | | | | DESCENT | | |
| 1350 | -+-+---------+-+ F_DESCENT | |
| 1351 | -------------------------+-----------+- |
| 1352 | |
| 1353 | -BOFF + DESCENT + (F_HEIGHT - HEIGHT) / 2 = F_DESCENT |
| 1354 | BOFF = DESCENT + (F_HEIGHT - HEIGHT) / 2 - F_DESCENT |
| 1355 | DESCENT = FONT->descent |
| 1356 | HEIGHT = FONT_HEIGHT (FONT) |
| 1357 | F_DESCENT = (FRAME_FONT (F)->descent |
| 1358 | - F->output_data.x->baseline_offset) |
| 1359 | F_HEIGHT = FRAME_LINE_HEIGHT (F) |
| 1360 | */ |
| 1361 | |
| 1362 | #define VCENTER_BASELINE_OFFSET(FONT, F) \ |
| 1363 | (FONT_DESCENT (FONT) \ |
| 1364 | + (FRAME_LINE_HEIGHT ((F)) - FONT_HEIGHT ((FONT)) \ |
| 1365 | + (FRAME_LINE_HEIGHT ((F)) > FONT_HEIGHT ((FONT)))) / 2 \ |
| 1366 | - (FONT_DESCENT (FRAME_FONT (F)) - FRAME_BASELINE_OFFSET (F))) |
| 1367 | |
| 1368 | \f |
| 1369 | /*********************************************************************** |
| 1370 | Faces |
| 1371 | ***********************************************************************/ |
| 1372 | |
| 1373 | /* Indices of face attributes in Lisp face vectors. Slot zero is the |
| 1374 | symbol `face'. */ |
| 1375 | |
| 1376 | enum lface_attribute_index |
| 1377 | { |
| 1378 | LFACE_FAMILY_INDEX = 1, |
| 1379 | LFACE_SWIDTH_INDEX, |
| 1380 | LFACE_HEIGHT_INDEX, |
| 1381 | LFACE_WEIGHT_INDEX, |
| 1382 | LFACE_SLANT_INDEX, |
| 1383 | LFACE_UNDERLINE_INDEX, |
| 1384 | LFACE_INVERSE_INDEX, |
| 1385 | LFACE_FOREGROUND_INDEX, |
| 1386 | LFACE_BACKGROUND_INDEX, |
| 1387 | LFACE_STIPPLE_INDEX, |
| 1388 | LFACE_OVERLINE_INDEX, |
| 1389 | LFACE_STRIKE_THROUGH_INDEX, |
| 1390 | LFACE_BOX_INDEX, |
| 1391 | LFACE_FONT_INDEX, |
| 1392 | LFACE_INHERIT_INDEX, |
| 1393 | LFACE_AVGWIDTH_INDEX, |
| 1394 | LFACE_VECTOR_SIZE |
| 1395 | }; |
| 1396 | |
| 1397 | |
| 1398 | /* Box types of faces. */ |
| 1399 | |
| 1400 | enum face_box_type |
| 1401 | { |
| 1402 | /* No box around text. */ |
| 1403 | FACE_NO_BOX, |
| 1404 | |
| 1405 | /* Simple box of specified width and color. Default width is 1, and |
| 1406 | default color is the foreground color of the face. */ |
| 1407 | FACE_SIMPLE_BOX, |
| 1408 | |
| 1409 | /* Boxes with 3D shadows. Color equals the background color of the |
| 1410 | face. Width is specified. */ |
| 1411 | FACE_RAISED_BOX, |
| 1412 | FACE_SUNKEN_BOX |
| 1413 | }; |
| 1414 | |
| 1415 | |
| 1416 | /* Structure describing a realized face. |
| 1417 | |
| 1418 | For each Lisp face, 0..N realized faces can exist for different |
| 1419 | frames and different charsets. Realized faces are built from Lisp |
| 1420 | faces and text properties/overlays by merging faces and adding |
| 1421 | unspecified attributes from the `default' face. */ |
| 1422 | |
| 1423 | struct face |
| 1424 | { |
| 1425 | /* The id of this face. The id equals the index of this face in the |
| 1426 | vector faces_by_id of its face cache. */ |
| 1427 | int id; |
| 1428 | |
| 1429 | #ifdef HAVE_WINDOW_SYSTEM |
| 1430 | |
| 1431 | /* If non-zero, this is a GC that we can use without modification for |
| 1432 | drawing the characters in this face. */ |
| 1433 | GC gc; |
| 1434 | |
| 1435 | /* Font used for this face, or null if the font could not be loaded |
| 1436 | for some reason. This points to a `font' slot of a struct |
| 1437 | font_info, and we should not call XFreeFont on it because the |
| 1438 | font may still be used somewhere else. */ |
| 1439 | XFontStruct *font; |
| 1440 | |
| 1441 | /* Background stipple or bitmap used for this face. This is |
| 1442 | an id as returned from load_pixmap. */ |
| 1443 | int stipple; |
| 1444 | |
| 1445 | #else /* not HAVE_WINDOW_SYSTEM */ |
| 1446 | |
| 1447 | /* Dummy. */ |
| 1448 | int stipple; |
| 1449 | |
| 1450 | #endif /* not HAVE_WINDOW_SYSTEM */ |
| 1451 | |
| 1452 | /* Pixel value of foreground color for X frames. Color index |
| 1453 | for tty frames. */ |
| 1454 | unsigned long foreground; |
| 1455 | |
| 1456 | /* Pixel value or color index of background color. */ |
| 1457 | unsigned long background; |
| 1458 | |
| 1459 | /* Pixel value or color index of underline color. */ |
| 1460 | unsigned long underline_color; |
| 1461 | |
| 1462 | /* Pixel value or color index of overlined, strike-through, or box |
| 1463 | color. */ |
| 1464 | unsigned long overline_color; |
| 1465 | unsigned long strike_through_color; |
| 1466 | unsigned long box_color; |
| 1467 | |
| 1468 | /* The font's name. This points to a `name' of a font_info, and it |
| 1469 | must not be freed. */ |
| 1470 | char *font_name; |
| 1471 | |
| 1472 | /* Font info ID for this face's font. An ID is stored here because |
| 1473 | pointers to font_info structures may change. The reason is that |
| 1474 | they are pointers into a font table vector that is itself |
| 1475 | reallocated. */ |
| 1476 | int font_info_id; |
| 1477 | |
| 1478 | /* Fontset ID if this face uses a fontset, or -1. This is only >= 0 |
| 1479 | if the face was realized for a composition sequence. |
| 1480 | Otherwise, a specific font is loaded from the set of fonts |
| 1481 | specified by the fontset given by the family attribute of the face. */ |
| 1482 | int fontset; |
| 1483 | |
| 1484 | /* Pixmap width and height. */ |
| 1485 | unsigned int pixmap_w, pixmap_h; |
| 1486 | |
| 1487 | /* Non-zero means characters in this face have a box that thickness |
| 1488 | around them. If it is negative, the absolute value indicates the |
| 1489 | thickness, and the horizontal lines of box (top and bottom) are |
| 1490 | drawn inside of characters glyph area. The vertical lines of box |
| 1491 | (left and right) are drawn as the same way as the case that this |
| 1492 | value is positive. */ |
| 1493 | int box_line_width; |
| 1494 | |
| 1495 | /* Type of box drawn. A value of FACE_NO_BOX means no box is drawn |
| 1496 | around text in this face. A value of FACE_SIMPLE_BOX means a box |
| 1497 | of width box_line_width is drawn in color box_color. A value of |
| 1498 | FACE_RAISED_BOX or FACE_SUNKEN_BOX means a 3D box is drawn with |
| 1499 | shadow colors derived from the background color of the face. */ |
| 1500 | enum face_box_type box; |
| 1501 | |
| 1502 | /* If `box' above specifies a 3D type, 1 means use box_color for |
| 1503 | drawing shadows. */ |
| 1504 | unsigned use_box_color_for_shadows_p : 1; |
| 1505 | |
| 1506 | /* The Lisp face attributes this face realizes. All attributes |
| 1507 | in this vector are non-nil. */ |
| 1508 | Lisp_Object lface[LFACE_VECTOR_SIZE]; |
| 1509 | |
| 1510 | /* The hash value of this face. */ |
| 1511 | unsigned hash; |
| 1512 | |
| 1513 | /* The charset for which this face was realized if it was realized |
| 1514 | for use in multibyte text. If fontset >= 0, this is the charset |
| 1515 | of the first character of the composition sequence. A value of |
| 1516 | charset < 0 means the face was realized for use in unibyte text |
| 1517 | where the idea of Emacs charsets isn't applicable. */ |
| 1518 | int charset; |
| 1519 | |
| 1520 | /* Non-zero if text in this face should be underlined, overlined, |
| 1521 | strike-through or have a box drawn around it. */ |
| 1522 | unsigned underline_p : 1; |
| 1523 | unsigned overline_p : 1; |
| 1524 | unsigned strike_through_p : 1; |
| 1525 | |
| 1526 | /* 1 means that the colors specified for this face could not be |
| 1527 | loaded, and were replaced by default colors, so they shouldn't be |
| 1528 | freed. */ |
| 1529 | unsigned foreground_defaulted_p : 1; |
| 1530 | unsigned background_defaulted_p : 1; |
| 1531 | |
| 1532 | /* 1 means that either no color is specified for underlining or that |
| 1533 | the specified color couldn't be loaded. Use the foreground |
| 1534 | color when drawing in that case. */ |
| 1535 | unsigned underline_defaulted_p : 1; |
| 1536 | |
| 1537 | /* 1 means that either no color is specified for the corresponding |
| 1538 | attribute or that the specified color couldn't be loaded. |
| 1539 | Use the foreground color when drawing in that case. */ |
| 1540 | unsigned overline_color_defaulted_p : 1; |
| 1541 | unsigned strike_through_color_defaulted_p : 1; |
| 1542 | unsigned box_color_defaulted_p : 1; |
| 1543 | |
| 1544 | /* TTY appearances. Blinking is not yet implemented. Colors are |
| 1545 | found in `lface' with empty color string meaning the default |
| 1546 | color of the TTY. */ |
| 1547 | unsigned tty_bold_p : 1; |
| 1548 | unsigned tty_dim_p : 1; |
| 1549 | unsigned tty_underline_p : 1; |
| 1550 | unsigned tty_alt_charset_p : 1; |
| 1551 | unsigned tty_reverse_p : 1; |
| 1552 | unsigned tty_blinking_p : 1; |
| 1553 | |
| 1554 | /* 1 means that colors of this face may not be freed because they |
| 1555 | have been copied bitwise from a base face (see |
| 1556 | realize_x_face). */ |
| 1557 | unsigned colors_copied_bitwise_p : 1; |
| 1558 | |
| 1559 | /* If non-zero, use overstrike (to simulate bold-face). */ |
| 1560 | unsigned overstrike : 1; |
| 1561 | |
| 1562 | /* Next and previous face in hash collision list of face cache. */ |
| 1563 | struct face *next, *prev; |
| 1564 | |
| 1565 | /* If this face is for ASCII characters, this points this face |
| 1566 | itself. Otherwise, this points a face for ASCII characters. */ |
| 1567 | struct face *ascii_face; |
| 1568 | }; |
| 1569 | |
| 1570 | |
| 1571 | /* Color index indicating that face uses a terminal's default color. */ |
| 1572 | |
| 1573 | #define FACE_TTY_DEFAULT_COLOR ((unsigned long) -1) |
| 1574 | |
| 1575 | /* Color index indicating that face uses an unknown foreground color. */ |
| 1576 | |
| 1577 | #define FACE_TTY_DEFAULT_FG_COLOR ((unsigned long) -2) |
| 1578 | |
| 1579 | /* Color index indicating that face uses an unknown background color. */ |
| 1580 | |
| 1581 | #define FACE_TTY_DEFAULT_BG_COLOR ((unsigned long) -3) |
| 1582 | |
| 1583 | /* Non-zero if FACE was realized for unibyte use. */ |
| 1584 | |
| 1585 | #define FACE_UNIBYTE_P(FACE) ((FACE)->charset < 0) |
| 1586 | |
| 1587 | |
| 1588 | /* IDs of important faces known by the C face code. These are the IDs |
| 1589 | of the faces for CHARSET_ASCII. */ |
| 1590 | |
| 1591 | enum face_id |
| 1592 | { |
| 1593 | DEFAULT_FACE_ID, |
| 1594 | MODE_LINE_FACE_ID, |
| 1595 | MODE_LINE_INACTIVE_FACE_ID, |
| 1596 | TOOL_BAR_FACE_ID, |
| 1597 | FRINGE_FACE_ID, |
| 1598 | HEADER_LINE_FACE_ID, |
| 1599 | SCROLL_BAR_FACE_ID, |
| 1600 | BORDER_FACE_ID, |
| 1601 | CURSOR_FACE_ID, |
| 1602 | MOUSE_FACE_ID, |
| 1603 | MENU_FACE_ID, |
| 1604 | VERTICAL_BORDER_FACE_ID, |
| 1605 | BASIC_FACE_ID_SENTINEL |
| 1606 | }; |
| 1607 | |
| 1608 | #define MAX_FACE_ID ((1 << FACE_ID_BITS) - 1) |
| 1609 | |
| 1610 | /* A cache of realized faces. Each frame has its own cache because |
| 1611 | Emacs allows different frame-local face definitions. */ |
| 1612 | |
| 1613 | struct face_cache |
| 1614 | { |
| 1615 | /* Hash table of cached realized faces. */ |
| 1616 | struct face **buckets; |
| 1617 | |
| 1618 | /* Back-pointer to the frame this cache belongs to. */ |
| 1619 | struct frame *f; |
| 1620 | |
| 1621 | /* A vector of faces so that faces can be referenced by an ID. */ |
| 1622 | struct face **faces_by_id; |
| 1623 | |
| 1624 | /* The allocated size, and number of used slots of faces_by_id. */ |
| 1625 | int size, used; |
| 1626 | |
| 1627 | /* Flag indicating that attributes of the `menu' face have been |
| 1628 | changed. */ |
| 1629 | unsigned menu_face_changed_p : 1; |
| 1630 | }; |
| 1631 | |
| 1632 | |
| 1633 | /* Prepare face FACE for use on frame F. This must be called before |
| 1634 | using X resources of FACE. */ |
| 1635 | |
| 1636 | #define PREPARE_FACE_FOR_DISPLAY(F, FACE) \ |
| 1637 | if ((FACE)->gc == 0) \ |
| 1638 | prepare_face_for_display ((F), (FACE)); \ |
| 1639 | else \ |
| 1640 | (void) 0 |
| 1641 | |
| 1642 | /* Return a pointer to the face with ID on frame F, or null if such a |
| 1643 | face doesn't exist. */ |
| 1644 | |
| 1645 | #define FACE_FROM_ID(F, ID) \ |
| 1646 | (((unsigned) (ID) < FRAME_FACE_CACHE (F)->used) \ |
| 1647 | ? FRAME_FACE_CACHE (F)->faces_by_id[ID] \ |
| 1648 | : NULL) |
| 1649 | |
| 1650 | #ifdef HAVE_WINDOW_SYSTEM |
| 1651 | |
| 1652 | /* Non-zero if FACE is suitable for displaying character CHAR. */ |
| 1653 | |
| 1654 | #define FACE_SUITABLE_FOR_CHAR_P(FACE, CHAR) \ |
| 1655 | (SINGLE_BYTE_CHAR_P (CHAR) \ |
| 1656 | ? (FACE) == (FACE)->ascii_face \ |
| 1657 | : face_suitable_for_char_p ((FACE), (CHAR))) |
| 1658 | |
| 1659 | /* Return the id of the realized face on frame F that is like the face |
| 1660 | with id ID but is suitable for displaying character CHAR. |
| 1661 | This macro is only meaningful for multibyte character CHAR. */ |
| 1662 | |
| 1663 | #define FACE_FOR_CHAR(F, FACE, CHAR) \ |
| 1664 | (SINGLE_BYTE_CHAR_P (CHAR) \ |
| 1665 | ? (FACE)->ascii_face->id \ |
| 1666 | : face_for_char ((F), (FACE), (CHAR))) |
| 1667 | |
| 1668 | #else /* not HAVE_WINDOW_SYSTEM */ |
| 1669 | |
| 1670 | #define FACE_SUITABLE_FOR_CHAR_P(FACE, CHAR) 1 |
| 1671 | #define FACE_FOR_CHAR(F, FACE, CHAR) ((FACE)->id) |
| 1672 | |
| 1673 | #endif /* not HAVE_WINDOW_SYSTEM */ |
| 1674 | |
| 1675 | /* Non-zero means face attributes have been changed since the last |
| 1676 | redisplay. Used in redisplay_internal. */ |
| 1677 | |
| 1678 | extern int face_change_count; |
| 1679 | |
| 1680 | |
| 1681 | |
| 1682 | \f |
| 1683 | /*********************************************************************** |
| 1684 | Fringes |
| 1685 | ***********************************************************************/ |
| 1686 | |
| 1687 | /* Structure used to describe where and how to draw a fringe bitmap. |
| 1688 | WHICH is the fringe bitmap to draw. WD and H is the (adjusted) |
| 1689 | width and height of the bitmap, DH is the height adjustment (if |
| 1690 | bitmap is periodic). X and Y are frame coordinates of the area to |
| 1691 | display the bitmap, DY is relative offset of the bitmap into that |
| 1692 | area. BX, NX, BY, NY specifies the area to clear if the bitmap |
| 1693 | does not fill the entire area. FACE is the fringe face. */ |
| 1694 | |
| 1695 | struct draw_fringe_bitmap_params |
| 1696 | { |
| 1697 | int which; /* enum fringe_bitmap_type */ |
| 1698 | unsigned short *bits; |
| 1699 | int wd, h, dh; |
| 1700 | int x, y; |
| 1701 | int bx, nx, by, ny; |
| 1702 | unsigned cursor_p : 1; |
| 1703 | unsigned overlay_p : 1; |
| 1704 | struct face *face; |
| 1705 | }; |
| 1706 | |
| 1707 | #define MAX_FRINGE_BITMAPS (1<<FRINGE_ID_BITS) |
| 1708 | |
| 1709 | \f |
| 1710 | /*********************************************************************** |
| 1711 | Display Iterator |
| 1712 | ***********************************************************************/ |
| 1713 | |
| 1714 | /* Iteration over things to display in current_buffer or in a string. |
| 1715 | |
| 1716 | The iterator handles: |
| 1717 | |
| 1718 | 1. Overlay strings (after-string, before-string). |
| 1719 | 2. Face properties. |
| 1720 | 3. Invisible text properties. |
| 1721 | 4. Selective display. |
| 1722 | 5. Translation of characters via display tables. |
| 1723 | 6. Translation of control characters to the forms `\003' or `^C'. |
| 1724 | 7. `glyph' and `space-width' properties. |
| 1725 | |
| 1726 | Iterators are initialized by calling init_iterator or one of the |
| 1727 | equivalent functions below. A call to get_next_display_element |
| 1728 | loads the iterator structure with information about what next to |
| 1729 | display. A call to set_iterator_to_next increments the iterator's |
| 1730 | position. |
| 1731 | |
| 1732 | Characters from overlay strings, display table entries or control |
| 1733 | character translations are returned one at a time. For example, if |
| 1734 | we have a text of `a\x01' where `a' has a display table definition |
| 1735 | of `cd' and the control character is displayed with a leading |
| 1736 | arrow, then the iterator will return: |
| 1737 | |
| 1738 | Call Return Source Call next |
| 1739 | ----------------------------------------------------------------- |
| 1740 | next c display table move |
| 1741 | next d display table move |
| 1742 | next ^ control char move |
| 1743 | next A control char move |
| 1744 | |
| 1745 | The same mechanism is also used to return characters for ellipses |
| 1746 | displayed at the end of invisible text. |
| 1747 | |
| 1748 | CAVEAT: Under some circumstances, move_.* functions can be called |
| 1749 | asynchronously, e.g. when computing a buffer position from an x and |
| 1750 | y pixel position. This means that these functions and functions |
| 1751 | called from them SHOULD NOT USE xmalloc and alike. See also the |
| 1752 | comment at the start of xdisp.c. */ |
| 1753 | |
| 1754 | /* Enumeration describing what kind of display element an iterator is |
| 1755 | loaded with after a call to get_next_display_element. */ |
| 1756 | |
| 1757 | enum display_element_type |
| 1758 | { |
| 1759 | /* A normal character. */ |
| 1760 | IT_CHARACTER, |
| 1761 | |
| 1762 | /* A composition sequence. */ |
| 1763 | IT_COMPOSITION, |
| 1764 | |
| 1765 | /* An image. */ |
| 1766 | IT_IMAGE, |
| 1767 | |
| 1768 | /* A flexible width and height space. */ |
| 1769 | IT_STRETCH, |
| 1770 | |
| 1771 | /* End of buffer or string. */ |
| 1772 | IT_EOB, |
| 1773 | |
| 1774 | /* Truncation glyphs. Never returned by get_next_display_element. |
| 1775 | Used to get display information about truncation glyphs via |
| 1776 | produce_glyphs. */ |
| 1777 | IT_TRUNCATION, |
| 1778 | |
| 1779 | /* Continuation glyphs. See the comment for IT_TRUNCATION. */ |
| 1780 | IT_CONTINUATION |
| 1781 | }; |
| 1782 | |
| 1783 | |
| 1784 | /* An enumerator for each text property that has a meaning for display |
| 1785 | purposes. */ |
| 1786 | |
| 1787 | enum prop_idx |
| 1788 | { |
| 1789 | FONTIFIED_PROP_IDX, |
| 1790 | FACE_PROP_IDX, |
| 1791 | INVISIBLE_PROP_IDX, |
| 1792 | DISPLAY_PROP_IDX, |
| 1793 | COMPOSITION_PROP_IDX, |
| 1794 | |
| 1795 | /* Not a property. Used to indicate changes in overlays. */ |
| 1796 | OVERLAY_PROP_IDX, |
| 1797 | |
| 1798 | /* Sentinel. */ |
| 1799 | LAST_PROP_IDX |
| 1800 | }; |
| 1801 | |
| 1802 | |
| 1803 | struct it_slice |
| 1804 | { |
| 1805 | Lisp_Object x; |
| 1806 | Lisp_Object y; |
| 1807 | Lisp_Object width; |
| 1808 | Lisp_Object height; |
| 1809 | }; |
| 1810 | |
| 1811 | enum it_method { |
| 1812 | GET_FROM_BUFFER = 0, |
| 1813 | GET_FROM_DISPLAY_VECTOR, |
| 1814 | GET_FROM_COMPOSITION, |
| 1815 | GET_FROM_STRING, |
| 1816 | GET_FROM_C_STRING, |
| 1817 | GET_FROM_IMAGE, |
| 1818 | GET_FROM_STRETCH, |
| 1819 | NUM_IT_METHODS |
| 1820 | }; |
| 1821 | |
| 1822 | #define IT_STACK_SIZE 4 |
| 1823 | |
| 1824 | struct it |
| 1825 | { |
| 1826 | /* The window in which we iterate over current_buffer (or a string). */ |
| 1827 | Lisp_Object window; |
| 1828 | struct window *w; |
| 1829 | |
| 1830 | /* The window's frame. */ |
| 1831 | struct frame *f; |
| 1832 | |
| 1833 | /* Method to use to load this structure with the next display element. */ |
| 1834 | enum it_method method; |
| 1835 | |
| 1836 | /* The next position at which to check for face changes, invisible |
| 1837 | text, overlay strings, end of text etc., which see. */ |
| 1838 | int stop_charpos; |
| 1839 | |
| 1840 | /* Maximum string or buffer position + 1. ZV when iterating over |
| 1841 | current_buffer. */ |
| 1842 | int end_charpos; |
| 1843 | |
| 1844 | /* C string to iterate over. Non-null means get characters from |
| 1845 | this string, otherwise characters are read from current_buffer |
| 1846 | or it->string. */ |
| 1847 | unsigned char *s; |
| 1848 | |
| 1849 | /* Number of characters in the string (s, or it->string) we iterate |
| 1850 | over. */ |
| 1851 | int string_nchars; |
| 1852 | |
| 1853 | /* Start and end of a visible region; -1 if the region is not |
| 1854 | visible in the window. */ |
| 1855 | int region_beg_charpos, region_end_charpos; |
| 1856 | |
| 1857 | /* Position at which redisplay end trigger functions should be run. */ |
| 1858 | int redisplay_end_trigger_charpos; |
| 1859 | |
| 1860 | /* 1 means multibyte characters are enabled. */ |
| 1861 | unsigned multibyte_p : 1; |
| 1862 | |
| 1863 | /* 1 means window has a mode line at its top. */ |
| 1864 | unsigned header_line_p : 1; |
| 1865 | |
| 1866 | /* 1 means `string' is the value of a `display' property. |
| 1867 | Don't handle some `display' properties in these strings. */ |
| 1868 | unsigned string_from_display_prop_p : 1; |
| 1869 | |
| 1870 | /* When METHOD == next_element_from_display_vector, |
| 1871 | this is 1 if we're doing an ellipsis. Otherwise meaningless. */ |
| 1872 | unsigned ellipsis_p : 1; |
| 1873 | |
| 1874 | /* Display table in effect or null for none. */ |
| 1875 | struct Lisp_Char_Table *dp; |
| 1876 | |
| 1877 | /* Current display table vector to return characters from and its |
| 1878 | end. dpvec null means we are not returning characters from a |
| 1879 | display table entry; current.dpvec_index gives the current index |
| 1880 | into dpvec. This same mechanism is also used to return |
| 1881 | characters from translated control characters, i.e. `\003' or |
| 1882 | `^C'. */ |
| 1883 | Lisp_Object *dpvec, *dpend; |
| 1884 | |
| 1885 | /* Length in bytes of the char that filled dpvec. A value of zero |
| 1886 | means that no such character is involved. */ |
| 1887 | int dpvec_char_len; |
| 1888 | |
| 1889 | /* Face id to use for all characters in display vector. -1 if unused. */ |
| 1890 | int dpvec_face_id; |
| 1891 | |
| 1892 | /* Face id of the iterator saved in case a glyph from dpvec contains |
| 1893 | a face. The face is restored when all glyphs from dpvec have |
| 1894 | been delivered. */ |
| 1895 | int saved_face_id; |
| 1896 | |
| 1897 | /* Vector of glyphs for control character translation. The pointer |
| 1898 | dpvec is set to ctl_chars when a control character is translated. |
| 1899 | This vector is also used for incomplete multibyte character |
| 1900 | translation (e.g \222\244). Such a character is at most 4 bytes, |
| 1901 | thus we need at most 16 bytes here. */ |
| 1902 | Lisp_Object ctl_chars[16]; |
| 1903 | |
| 1904 | /* Initial buffer or string position of the iterator, before skipping |
| 1905 | over display properties and invisible text. */ |
| 1906 | struct display_pos start; |
| 1907 | |
| 1908 | /* Current buffer or string position of the iterator, including |
| 1909 | position in overlay strings etc. */ |
| 1910 | struct display_pos current; |
| 1911 | |
| 1912 | /* Vector of overlays to process. Overlay strings are processed |
| 1913 | OVERLAY_STRING_CHUNK_SIZE at a time. */ |
| 1914 | #define OVERLAY_STRING_CHUNK_SIZE 16 |
| 1915 | Lisp_Object overlay_strings[OVERLAY_STRING_CHUNK_SIZE]; |
| 1916 | |
| 1917 | /* Total number of overlay strings to process. This can be > |
| 1918 | OVERLAY_STRING_CHUNK_SIZE. */ |
| 1919 | int n_overlay_strings; |
| 1920 | |
| 1921 | /* If non-nil, a Lisp string being processed. If |
| 1922 | current.overlay_string_index >= 0, this is an overlay string from |
| 1923 | pos. */ |
| 1924 | Lisp_Object string; |
| 1925 | |
| 1926 | /* Stack of saved values. New entries are pushed when we begin to |
| 1927 | process an overlay string or a string from a `glyph' property. |
| 1928 | Entries are popped when we return to deliver display elements |
| 1929 | from what we previously had. */ |
| 1930 | struct iterator_stack_entry |
| 1931 | { |
| 1932 | Lisp_Object string; |
| 1933 | int string_nchars; |
| 1934 | int end_charpos; |
| 1935 | int stop_charpos; |
| 1936 | int face_id; |
| 1937 | |
| 1938 | /* Save values specific to a given method. */ |
| 1939 | union { |
| 1940 | /* method == GET_FROM_IMAGE */ |
| 1941 | struct { |
| 1942 | Lisp_Object object; |
| 1943 | struct it_slice slice; |
| 1944 | int image_id; |
| 1945 | } image; |
| 1946 | /* method == GET_FROM_COMPOSITION */ |
| 1947 | struct { |
| 1948 | Lisp_Object object; |
| 1949 | int c, len; |
| 1950 | int cmp_id, cmp_len; |
| 1951 | } comp; |
| 1952 | /* method == GET_FROM_STRETCH */ |
| 1953 | struct { |
| 1954 | Lisp_Object object; |
| 1955 | } stretch; |
| 1956 | } u; |
| 1957 | |
| 1958 | /* current text and display positions. */ |
| 1959 | struct text_pos position; |
| 1960 | struct display_pos current; |
| 1961 | enum glyph_row_area area; |
| 1962 | enum it_method method; |
| 1963 | unsigned multibyte_p : 1; |
| 1964 | unsigned string_from_display_prop_p : 1; |
| 1965 | unsigned display_ellipsis_p : 1; |
| 1966 | |
| 1967 | /* properties from display property that are reset by another display property. */ |
| 1968 | Lisp_Object space_width; |
| 1969 | Lisp_Object font_height; |
| 1970 | short voffset; |
| 1971 | } |
| 1972 | stack[IT_STACK_SIZE]; |
| 1973 | |
| 1974 | /* Stack pointer. */ |
| 1975 | int sp; |
| 1976 | |
| 1977 | /* Setting of buffer-local variable selective-display-ellipsis. */ |
| 1978 | unsigned selective_display_ellipsis_p : 1; |
| 1979 | |
| 1980 | /* 1 means control characters are translated into the form `^C' |
| 1981 | where the `^' can be replaced by a display table entry. */ |
| 1982 | unsigned ctl_arrow_p : 1; |
| 1983 | |
| 1984 | /* -1 means selective display hides everything between a \r and the |
| 1985 | next newline; > 0 means hide lines indented more than that value. */ |
| 1986 | int selective; |
| 1987 | |
| 1988 | /* An enumeration describing what the next display element is |
| 1989 | after a call to get_next_display_element. */ |
| 1990 | enum display_element_type what; |
| 1991 | |
| 1992 | /* Face to use. */ |
| 1993 | int face_id; |
| 1994 | |
| 1995 | /* Non-zero means that the current face has a box. */ |
| 1996 | unsigned face_box_p : 1; |
| 1997 | |
| 1998 | /* Non-null means that the current character is the first in a run |
| 1999 | of characters with box face. */ |
| 2000 | unsigned start_of_box_run_p : 1; |
| 2001 | |
| 2002 | /* Non-zero means that the current character is the last in a run |
| 2003 | of characters with box face. */ |
| 2004 | unsigned end_of_box_run_p : 1; |
| 2005 | |
| 2006 | /* 1 means overlay strings at end_charpos have been processed. */ |
| 2007 | unsigned overlay_strings_at_end_processed_p : 1; |
| 2008 | |
| 2009 | /* 1 means to ignore overlay strings at current pos, as they have |
| 2010 | already been processed. */ |
| 2011 | unsigned ignore_overlay_strings_at_pos_p : 1; |
| 2012 | |
| 2013 | /* 1 means the actual glyph is not available in the current |
| 2014 | system. */ |
| 2015 | unsigned glyph_not_available_p : 1; |
| 2016 | |
| 2017 | /* 1 means the next line in display_line continues a character |
| 2018 | consisting of more than one glyph, and some glyphs of this |
| 2019 | character have been put on the previous line. */ |
| 2020 | unsigned starts_in_middle_of_char_p : 1; |
| 2021 | |
| 2022 | /* If 1, saved_face_id contains the id of the face in front of text |
| 2023 | skipped due to selective display. */ |
| 2024 | unsigned face_before_selective_p : 1; |
| 2025 | |
| 2026 | /* If 1, adjust current glyph so it does not increase current row |
| 2027 | descent/ascent (line-height property). Reset after this glyph. */ |
| 2028 | unsigned constrain_row_ascent_descent_p : 1; |
| 2029 | |
| 2030 | /* The ID of the default face to use. One of DEFAULT_FACE_ID, |
| 2031 | MODE_LINE_FACE_ID, etc, depending on what we are displaying. */ |
| 2032 | int base_face_id; |
| 2033 | |
| 2034 | /* If what == IT_CHARACTER, character and length in bytes. This is |
| 2035 | a character from a buffer or string. It may be different from |
| 2036 | the character displayed in case that |
| 2037 | unibyte_display_via_language_environment is set. |
| 2038 | |
| 2039 | If what == IT_COMPOSITION, the first component of a composition |
| 2040 | and length in bytes of the composition. */ |
| 2041 | int c, len; |
| 2042 | |
| 2043 | /* If what == IT_COMPOSITION, identification number and length in |
| 2044 | chars of a composition. */ |
| 2045 | int cmp_id, cmp_len; |
| 2046 | |
| 2047 | /* The character to display, possibly translated to multibyte |
| 2048 | if unibyte_display_via_language_environment is set. This |
| 2049 | is set after produce_glyphs has been called. */ |
| 2050 | int char_to_display; |
| 2051 | |
| 2052 | /* If what == IT_IMAGE, the id of the image to display. */ |
| 2053 | int image_id; |
| 2054 | |
| 2055 | /* Values from `slice' property. */ |
| 2056 | struct it_slice slice; |
| 2057 | |
| 2058 | /* Value of the `space-width' property, if any; nil if none. */ |
| 2059 | Lisp_Object space_width; |
| 2060 | |
| 2061 | /* Computed from the value of the `raise' property. */ |
| 2062 | short voffset; |
| 2063 | |
| 2064 | /* Value of the `height' property, if any; nil if none. */ |
| 2065 | Lisp_Object font_height; |
| 2066 | |
| 2067 | /* Object and position where the current display element came from. |
| 2068 | Object can be a Lisp string in case the current display element |
| 2069 | comes from an overlay string, or it is buffer. It may also be nil |
| 2070 | during mode-line update. Position is a position in object. */ |
| 2071 | Lisp_Object object; |
| 2072 | struct text_pos position; |
| 2073 | |
| 2074 | /* 1 means lines are truncated. */ |
| 2075 | unsigned truncate_lines_p : 1; |
| 2076 | |
| 2077 | /* Number of columns per \t. */ |
| 2078 | short tab_width; |
| 2079 | |
| 2080 | /* Width in pixels of truncation and continuation glyphs. */ |
| 2081 | short truncation_pixel_width, continuation_pixel_width; |
| 2082 | |
| 2083 | /* First and last visible x-position in the display area. If window |
| 2084 | is hscrolled by n columns, first_visible_x == n * FRAME_COLUMN_WIDTH |
| 2085 | (f), and last_visible_x == pixel width of W + first_visible_x. */ |
| 2086 | int first_visible_x, last_visible_x; |
| 2087 | |
| 2088 | /* Last visible y-position + 1 in the display area without a mode |
| 2089 | line, if the window has one. */ |
| 2090 | int last_visible_y; |
| 2091 | |
| 2092 | /* Default amount of additional space in pixels between lines (for |
| 2093 | window systems only.) */ |
| 2094 | int extra_line_spacing; |
| 2095 | |
| 2096 | /* Max extra line spacing added in this row. */ |
| 2097 | int max_extra_line_spacing; |
| 2098 | |
| 2099 | /* Override font height information for this glyph. |
| 2100 | Used if override_ascent >= 0. Cleared after this glyph. */ |
| 2101 | int override_ascent, override_descent, override_boff; |
| 2102 | |
| 2103 | /* If non-null, glyphs are produced in glyph_row with each call to |
| 2104 | produce_glyphs. */ |
| 2105 | struct glyph_row *glyph_row; |
| 2106 | |
| 2107 | /* The area of glyph_row to which glyphs are added. */ |
| 2108 | enum glyph_row_area area; |
| 2109 | |
| 2110 | /* Number of glyphs needed for the last character requested via |
| 2111 | produce_glyphs. This is 1 except for tabs. */ |
| 2112 | int nglyphs; |
| 2113 | |
| 2114 | /* Width of the display element in pixels. Result of |
| 2115 | produce_glyphs. */ |
| 2116 | int pixel_width; |
| 2117 | |
| 2118 | /* Current, maximum logical, and maximum physical line height |
| 2119 | information. Result of produce_glyphs. */ |
| 2120 | int ascent, descent, max_ascent, max_descent; |
| 2121 | int phys_ascent, phys_descent, max_phys_ascent, max_phys_descent; |
| 2122 | |
| 2123 | /* Current x pixel position within the display line. This value |
| 2124 | does not include the width of continuation lines in front of the |
| 2125 | line. The value of current_x is automatically incremented by |
| 2126 | pixel_width with each call to produce_glyphs. */ |
| 2127 | int current_x; |
| 2128 | |
| 2129 | /* Accumulated width of continuation lines. If > 0, this means we |
| 2130 | are currently in a continuation line. This is initially zero and |
| 2131 | incremented/reset by display_line, move_it_to etc. */ |
| 2132 | int continuation_lines_width; |
| 2133 | |
| 2134 | /* Current y-position. Automatically incremented by the height of |
| 2135 | glyph_row in move_it_to and display_line. */ |
| 2136 | int current_y; |
| 2137 | |
| 2138 | /* Vertical matrix position of first text line in window. */ |
| 2139 | int first_vpos; |
| 2140 | |
| 2141 | /* Current vertical matrix position, or line number. Automatically |
| 2142 | incremented by move_it_to and display_line. */ |
| 2143 | int vpos; |
| 2144 | |
| 2145 | /* Horizontal matrix position reached in move_it_in_display_line. |
| 2146 | Only set there, not in display_line. */ |
| 2147 | int hpos; |
| 2148 | |
| 2149 | /* Left fringe bitmap number (enum fringe_bitmap_type). */ |
| 2150 | unsigned left_user_fringe_bitmap : FRINGE_ID_BITS; |
| 2151 | |
| 2152 | /* Right fringe bitmap number (enum fringe_bitmap_type). */ |
| 2153 | unsigned right_user_fringe_bitmap : FRINGE_ID_BITS; |
| 2154 | |
| 2155 | /* Face of the left fringe glyph. */ |
| 2156 | unsigned left_user_fringe_face_id : FACE_ID_BITS; |
| 2157 | |
| 2158 | /* Face of the right fringe glyph. */ |
| 2159 | unsigned right_user_fringe_face_id : FACE_ID_BITS; |
| 2160 | }; |
| 2161 | |
| 2162 | |
| 2163 | /* Access to positions of iterator IT. */ |
| 2164 | |
| 2165 | #define IT_CHARPOS(IT) CHARPOS ((IT).current.pos) |
| 2166 | #define IT_BYTEPOS(IT) BYTEPOS ((IT).current.pos) |
| 2167 | #define IT_STRING_CHARPOS(IT) CHARPOS ((IT).current.string_pos) |
| 2168 | #define IT_STRING_BYTEPOS(IT) BYTEPOS ((IT).current.string_pos) |
| 2169 | |
| 2170 | /* Test if IT has reached the end of its buffer or string. This will |
| 2171 | only work after get_next_display_element has been called. */ |
| 2172 | |
| 2173 | #define ITERATOR_AT_END_P(IT) ((IT)->what == IT_EOB) |
| 2174 | |
| 2175 | /* Non-zero means IT is at the end of a line. This is the case if it |
| 2176 | is either on a newline or on a carriage return and selective |
| 2177 | display hides the rest of the line. */ |
| 2178 | |
| 2179 | #define ITERATOR_AT_END_OF_LINE_P(IT) \ |
| 2180 | ((IT)->what == IT_CHARACTER \ |
| 2181 | && ((IT)->c == '\n' \ |
| 2182 | || ((IT)->c == '\r' && (IT)->selective))) |
| 2183 | |
| 2184 | /* Call produce_glyphs or produce_glyphs_hook, if set. Shortcut to |
| 2185 | avoid the function call overhead. */ |
| 2186 | |
| 2187 | #define PRODUCE_GLYPHS(IT) \ |
| 2188 | do { \ |
| 2189 | extern int inhibit_free_realized_faces; \ |
| 2190 | if (rif != NULL) \ |
| 2191 | rif->produce_glyphs ((IT)); \ |
| 2192 | else \ |
| 2193 | produce_glyphs ((IT)); \ |
| 2194 | if ((IT)->glyph_row != NULL) \ |
| 2195 | inhibit_free_realized_faces = 1; \ |
| 2196 | } while (0) |
| 2197 | |
| 2198 | /* Bit-flags indicating what operation move_it_to should perform. */ |
| 2199 | |
| 2200 | enum move_operation_enum |
| 2201 | { |
| 2202 | /* Stop if specified x-position is reached. */ |
| 2203 | MOVE_TO_X = 0x01, |
| 2204 | |
| 2205 | /* Stop if specified y-position is reached. */ |
| 2206 | MOVE_TO_Y = 0x02, |
| 2207 | |
| 2208 | /* Stop if specified vpos is reached. */ |
| 2209 | MOVE_TO_VPOS = 0x04, |
| 2210 | |
| 2211 | /* Stop if specified buffer or string position is reached. */ |
| 2212 | MOVE_TO_POS = 0x08 |
| 2213 | }; |
| 2214 | |
| 2215 | |
| 2216 | \f |
| 2217 | /*********************************************************************** |
| 2218 | Window-based redisplay interface |
| 2219 | ***********************************************************************/ |
| 2220 | |
| 2221 | /* Structure used to describe runs of lines that must be scrolled. */ |
| 2222 | |
| 2223 | struct run |
| 2224 | { |
| 2225 | /* Source and destination y pixel position. */ |
| 2226 | int desired_y, current_y; |
| 2227 | |
| 2228 | /* Source and destination vpos in matrix. */ |
| 2229 | int desired_vpos, current_vpos; |
| 2230 | |
| 2231 | /* Height in pixels, number of glyph rows. */ |
| 2232 | int height, nrows; |
| 2233 | }; |
| 2234 | |
| 2235 | |
| 2236 | /* Handlers for setting frame parameters. */ |
| 2237 | |
| 2238 | typedef void (*frame_parm_handler) P_ ((struct frame *, Lisp_Object, Lisp_Object)); |
| 2239 | |
| 2240 | |
| 2241 | /* Structure holding system-dependent interface functions needed |
| 2242 | for window-based redisplay. */ |
| 2243 | |
| 2244 | struct redisplay_interface |
| 2245 | { |
| 2246 | /* Handlers for setting frame parameters. */ |
| 2247 | frame_parm_handler *frame_parm_handlers; |
| 2248 | |
| 2249 | /* Produce glyphs/get display metrics for the display element IT is |
| 2250 | loaded with. */ |
| 2251 | void (*produce_glyphs) P_ ((struct it *it)); |
| 2252 | |
| 2253 | /* Write or insert LEN glyphs from STRING at the nominal output |
| 2254 | position. */ |
| 2255 | void (*write_glyphs) P_ ((struct glyph *string, int len)); |
| 2256 | void (*insert_glyphs) P_ ((struct glyph *start, int len)); |
| 2257 | |
| 2258 | /* Clear from nominal output position to X. X < 0 means clear |
| 2259 | to right end of display. */ |
| 2260 | void (*clear_end_of_line) P_ ((int x)); |
| 2261 | |
| 2262 | /* Function to call to scroll the display as described by RUN on |
| 2263 | window W. */ |
| 2264 | void (*scroll_run_hook) P_ ((struct window *w, struct run *run)); |
| 2265 | |
| 2266 | /* Function to call after a line in a display has been completely |
| 2267 | updated. Used to draw truncation marks and alike. DESIRED_ROW |
| 2268 | is the desired row which has been updated. */ |
| 2269 | void (*after_update_window_line_hook) P_ ((struct glyph_row *desired_row)); |
| 2270 | |
| 2271 | /* Function to call before beginning to update window W in |
| 2272 | window-based redisplay. */ |
| 2273 | void (*update_window_begin_hook) P_ ((struct window *w)); |
| 2274 | |
| 2275 | /* Function to call after window W has been updated in window-based |
| 2276 | redisplay. CURSOR_ON_P non-zero means switch cursor on. |
| 2277 | MOUSE_FACE_OVERWRITTEN_P non-zero means that some lines in W |
| 2278 | that contained glyphs in mouse-face were overwritten, so we |
| 2279 | have to update the mouse highlight. */ |
| 2280 | void (*update_window_end_hook) P_ ((struct window *w, int cursor_on_p, |
| 2281 | int mouse_face_overwritten_p)); |
| 2282 | |
| 2283 | /* Move cursor to row/column position VPOS/HPOS, pixel coordinates |
| 2284 | Y/X. HPOS/VPOS are window-relative row and column numbers and X/Y |
| 2285 | are window-relative pixel positions. */ |
| 2286 | void (*cursor_to) P_ ((int vpos, int hpos, int y, int x)); |
| 2287 | |
| 2288 | /* Flush the display of frame F. For X, this is XFlush. */ |
| 2289 | void (*flush_display) P_ ((struct frame *f)); |
| 2290 | |
| 2291 | /* Flush the display of frame F if non-NULL. This is called |
| 2292 | during redisplay, and should be NULL on systems which flushes |
| 2293 | automatically before reading input. */ |
| 2294 | void (*flush_display_optional) P_ ((struct frame *f)); |
| 2295 | |
| 2296 | /* Clear the mouse hightlight in window W, if there is any. */ |
| 2297 | void (*clear_window_mouse_face) P_ ((struct window *w)); |
| 2298 | |
| 2299 | /* Set *LEFT and *RIGHT to the left and right overhang of GLYPH on |
| 2300 | frame F. */ |
| 2301 | void (*get_glyph_overhangs) P_ ((struct glyph *glyph, struct frame *f, |
| 2302 | int *left, int *right)); |
| 2303 | |
| 2304 | /* Fix the display of AREA of ROW in window W for overlapping rows. |
| 2305 | This function is called from redraw_overlapping_rows after |
| 2306 | desired rows have been made current. */ |
| 2307 | void (*fix_overlapping_area) P_ ((struct window *w, struct glyph_row *row, |
| 2308 | enum glyph_row_area area, int)); |
| 2309 | |
| 2310 | #ifdef HAVE_WINDOW_SYSTEM |
| 2311 | |
| 2312 | /* Draw a fringe bitmap in window W of row ROW using parameters P. */ |
| 2313 | void (*draw_fringe_bitmap) P_ ((struct window *w, struct glyph_row *row, |
| 2314 | struct draw_fringe_bitmap_params *p)); |
| 2315 | |
| 2316 | /* Define and destroy fringe bitmap no. WHICH. */ |
| 2317 | void (*define_fringe_bitmap) P_ ((int which, unsigned short *bits, |
| 2318 | int h, int wd)); |
| 2319 | void (*destroy_fringe_bitmap) P_ ((int which)); |
| 2320 | |
| 2321 | /* Get metrics of character CHAR2B in FONT of type FONT_TYPE. |
| 2322 | Value is null if CHAR2B is not contained in the font. */ |
| 2323 | XCharStruct * (*per_char_metric) P_ ((XFontStruct *font, XChar2b *char2b, |
| 2324 | int font_type)); |
| 2325 | |
| 2326 | /* Encode CHAR2B using encoding information from FONT_INFO. CHAR2B is |
| 2327 | the two-byte form of C. Encoding is returned in *CHAR2B. If |
| 2328 | TWO_BYTE_P is non-null, return non-zero there if font is two-byte. */ |
| 2329 | int (*encode_char) P_ ((int c, XChar2b *char2b, |
| 2330 | struct font_info *font_into, int *two_byte_p)); |
| 2331 | |
| 2332 | /* Compute left and right overhang of glyph string S. |
| 2333 | A NULL pointer if platform does not support this. */ |
| 2334 | void (*compute_glyph_string_overhangs) P_ ((struct glyph_string *s)); |
| 2335 | |
| 2336 | /* Draw a glyph string S. */ |
| 2337 | void (*draw_glyph_string) P_ ((struct glyph_string *s)); |
| 2338 | |
| 2339 | /* Define cursor CURSOR on frame F. */ |
| 2340 | void (*define_frame_cursor) P_ ((struct frame *f, Cursor cursor)); |
| 2341 | |
| 2342 | /* Clear the area at (X,Y,WIDTH,HEIGHT) of frame F. */ |
| 2343 | void (*clear_frame_area) P_ ((struct frame *f, int x, int y, |
| 2344 | int width, int height)); |
| 2345 | |
| 2346 | /* Draw specified cursor CURSOR_TYPE of width CURSOR_WIDTH |
| 2347 | at row GLYPH_ROW on window W if ON_P is 1. If ON_P is |
| 2348 | 0, don't draw cursor. If ACTIVE_P is 1, system caret |
| 2349 | should track this cursor (when applicable). */ |
| 2350 | void (*draw_window_cursor) P_ ((struct window *w, |
| 2351 | struct glyph_row *glyph_row, |
| 2352 | int x, int y, |
| 2353 | int cursor_type, int cursor_width, |
| 2354 | int on_p, int active_p)); |
| 2355 | |
| 2356 | /* Draw vertical border for window W from (X,Y0) to (X,Y1). */ |
| 2357 | void (*draw_vertical_window_border) P_ ((struct window *w, |
| 2358 | int x, int y0, int y1)); |
| 2359 | |
| 2360 | /* Shift display of frame F to make room for inserted glyphs. |
| 2361 | The area at pixel (X,Y) of width WIDTH and height HEIGHT is |
| 2362 | shifted right by SHIFT_BY pixels. */ |
| 2363 | void (*shift_glyphs_for_insert) P_ ((struct frame *f, |
| 2364 | int x, int y, int width, |
| 2365 | int height, int shift_by)); |
| 2366 | |
| 2367 | #endif /* HAVE_WINDOW_SYSTEM */ |
| 2368 | }; |
| 2369 | |
| 2370 | /* The current interface for window-based redisplay. */ |
| 2371 | |
| 2372 | extern struct redisplay_interface *rif; |
| 2373 | |
| 2374 | \f |
| 2375 | /*********************************************************************** |
| 2376 | Images |
| 2377 | ***********************************************************************/ |
| 2378 | |
| 2379 | #ifdef HAVE_WINDOW_SYSTEM |
| 2380 | |
| 2381 | /* Structure forward declarations. */ |
| 2382 | |
| 2383 | struct image; |
| 2384 | |
| 2385 | |
| 2386 | /* Each image format (JPEG, TIFF, ...) supported is described by |
| 2387 | a structure of the type below. */ |
| 2388 | |
| 2389 | struct image_type |
| 2390 | { |
| 2391 | /* A symbol uniquely identifying the image type, .e.g `jpeg'. */ |
| 2392 | Lisp_Object *type; |
| 2393 | |
| 2394 | /* Check that SPEC is a valid image specification for the given |
| 2395 | image type. Value is non-zero if SPEC is valid. */ |
| 2396 | int (* valid_p) P_ ((Lisp_Object spec)); |
| 2397 | |
| 2398 | /* Load IMG which is used on frame F from information contained in |
| 2399 | IMG->spec. Value is non-zero if successful. */ |
| 2400 | int (* load) P_ ((struct frame *f, struct image *img)); |
| 2401 | |
| 2402 | /* Free resources of image IMG which is used on frame F. */ |
| 2403 | void (* free) P_ ((struct frame *f, struct image *img)); |
| 2404 | |
| 2405 | /* Next in list of all supported image types. */ |
| 2406 | struct image_type *next; |
| 2407 | }; |
| 2408 | |
| 2409 | |
| 2410 | /* Structure describing an image. Specific image formats like XBM are |
| 2411 | converted into this form, so that display only has to deal with |
| 2412 | this type of image. */ |
| 2413 | |
| 2414 | struct image |
| 2415 | { |
| 2416 | /* The time in seconds at which the image was last displayed. Set |
| 2417 | in prepare_image_for_display. */ |
| 2418 | unsigned long timestamp; |
| 2419 | |
| 2420 | /* Pixmaps of the image. */ |
| 2421 | Pixmap pixmap, mask; |
| 2422 | |
| 2423 | /* Colors allocated for this image, if any. Allocated via xmalloc. */ |
| 2424 | unsigned long *colors; |
| 2425 | int ncolors; |
| 2426 | |
| 2427 | /* A single `background color' for this image, for the use of anyone that |
| 2428 | cares about such a thing. Only valid if the `background_valid' field |
| 2429 | is true. This should generally be accessed by calling the accessor |
| 2430 | macro `IMAGE_BACKGROUND', which will heuristically calculate a value |
| 2431 | if necessary. */ |
| 2432 | unsigned long background; |
| 2433 | |
| 2434 | /* True if this image has a `transparent' background -- that is, is |
| 2435 | uses an image mask. The accessor macro for this is |
| 2436 | `IMAGE_BACKGROUND_TRANSPARENT'. */ |
| 2437 | unsigned background_transparent : 1; |
| 2438 | |
| 2439 | /* True if the `background' and `background_transparent' fields are |
| 2440 | valid, respectively. */ |
| 2441 | unsigned background_valid : 1, background_transparent_valid : 1; |
| 2442 | |
| 2443 | /* Width and height of the image. */ |
| 2444 | int width, height; |
| 2445 | |
| 2446 | /* These values are used for the rectangles displayed for images |
| 2447 | that can't be loaded. */ |
| 2448 | #define DEFAULT_IMAGE_WIDTH 30 |
| 2449 | #define DEFAULT_IMAGE_HEIGHT 30 |
| 2450 | |
| 2451 | /* Top/left and bottom/right corner pixel of actual image data. |
| 2452 | Used by four_corners_best to consider the real image data, |
| 2453 | rather than looking at the optional image margin. */ |
| 2454 | int corners[4]; |
| 2455 | #define TOP_CORNER 0 |
| 2456 | #define LEFT_CORNER 1 |
| 2457 | #define BOT_CORNER 2 |
| 2458 | #define RIGHT_CORNER 3 |
| 2459 | |
| 2460 | /* Percent of image height used as ascent. A value of |
| 2461 | CENTERED_IMAGE_ASCENT means draw the image centered on the |
| 2462 | line. */ |
| 2463 | int ascent; |
| 2464 | #define DEFAULT_IMAGE_ASCENT 50 |
| 2465 | #define CENTERED_IMAGE_ASCENT -1 |
| 2466 | |
| 2467 | /* Lisp specification of this image. */ |
| 2468 | Lisp_Object spec; |
| 2469 | |
| 2470 | /* Relief to draw around the image. */ |
| 2471 | int relief; |
| 2472 | |
| 2473 | /* Optional margins around the image. This includes the relief. */ |
| 2474 | int hmargin, vmargin; |
| 2475 | |
| 2476 | /* Reference to the type of the image. */ |
| 2477 | struct image_type *type; |
| 2478 | |
| 2479 | /* 1 means that loading the image failed. Don't try again. */ |
| 2480 | unsigned load_failed_p; |
| 2481 | |
| 2482 | /* A place for image types to store additional data. The member |
| 2483 | data.lisp_val is marked during GC, so it's safe to store Lisp data |
| 2484 | there. Image types should free this data when their `free' |
| 2485 | function is called. */ |
| 2486 | struct |
| 2487 | { |
| 2488 | int int_val; |
| 2489 | void *ptr_val; |
| 2490 | Lisp_Object lisp_val; |
| 2491 | } data; |
| 2492 | |
| 2493 | /* Hash value of image specification to speed up comparisons. */ |
| 2494 | unsigned hash; |
| 2495 | |
| 2496 | /* Image id of this image. */ |
| 2497 | int id; |
| 2498 | |
| 2499 | /* Hash collision chain. */ |
| 2500 | struct image *next, *prev; |
| 2501 | }; |
| 2502 | |
| 2503 | |
| 2504 | /* Cache of images. Each frame has a cache. X frames with the same |
| 2505 | x_display_info share their caches. */ |
| 2506 | |
| 2507 | struct image_cache |
| 2508 | { |
| 2509 | /* Hash table of images. */ |
| 2510 | struct image **buckets; |
| 2511 | |
| 2512 | /* Vector mapping image ids to images. */ |
| 2513 | struct image **images; |
| 2514 | |
| 2515 | /* Allocated size of `images'. */ |
| 2516 | unsigned size; |
| 2517 | |
| 2518 | /* Number of images in the cache. */ |
| 2519 | unsigned used; |
| 2520 | |
| 2521 | /* Reference count (number of frames sharing this cache). */ |
| 2522 | int refcount; |
| 2523 | }; |
| 2524 | |
| 2525 | |
| 2526 | /* Value is a pointer to the image with id ID on frame F, or null if |
| 2527 | no image with that id exists. */ |
| 2528 | |
| 2529 | #define IMAGE_FROM_ID(F, ID) \ |
| 2530 | (((ID) >= 0 && (ID) < (FRAME_X_IMAGE_CACHE (F)->used)) \ |
| 2531 | ? FRAME_X_IMAGE_CACHE (F)->images[ID] \ |
| 2532 | : NULL) |
| 2533 | |
| 2534 | /* Size of bucket vector of image caches. Should be prime. */ |
| 2535 | |
| 2536 | #define IMAGE_CACHE_BUCKETS_SIZE 1001 |
| 2537 | |
| 2538 | #endif /* HAVE_WINDOW_SYSTEM */ |
| 2539 | |
| 2540 | |
| 2541 | \f |
| 2542 | /*********************************************************************** |
| 2543 | Tool-bars |
| 2544 | ***********************************************************************/ |
| 2545 | |
| 2546 | /* Enumeration defining where to find tool-bar item information in |
| 2547 | tool-bar items vectors stored with frames. Each tool-bar item |
| 2548 | occupies TOOL_BAR_ITEM_NSLOTS elements in such a vector. */ |
| 2549 | |
| 2550 | enum tool_bar_item_idx |
| 2551 | { |
| 2552 | /* The key of the tool-bar item. Used to remove items when a binding |
| 2553 | for `undefined' is found. */ |
| 2554 | TOOL_BAR_ITEM_KEY, |
| 2555 | |
| 2556 | /* Non-nil if item is enabled. */ |
| 2557 | TOOL_BAR_ITEM_ENABLED_P, |
| 2558 | |
| 2559 | /* Non-nil if item is selected (pressed). */ |
| 2560 | TOOL_BAR_ITEM_SELECTED_P, |
| 2561 | |
| 2562 | /* Caption. */ |
| 2563 | TOOL_BAR_ITEM_CAPTION, |
| 2564 | |
| 2565 | /* Image(s) to display. This is either a single image specification |
| 2566 | or a vector of specifications. */ |
| 2567 | TOOL_BAR_ITEM_IMAGES, |
| 2568 | |
| 2569 | /* The binding. */ |
| 2570 | TOOL_BAR_ITEM_BINDING, |
| 2571 | |
| 2572 | /* Button type. One of nil, `:radio' or `:toggle'. */ |
| 2573 | TOOL_BAR_ITEM_TYPE, |
| 2574 | |
| 2575 | /* Help string. */ |
| 2576 | TOOL_BAR_ITEM_HELP, |
| 2577 | |
| 2578 | /* Sentinel = number of slots in tool_bar_items occupied by one |
| 2579 | tool-bar item. */ |
| 2580 | TOOL_BAR_ITEM_NSLOTS |
| 2581 | }; |
| 2582 | |
| 2583 | |
| 2584 | /* An enumeration for the different images that can be specified |
| 2585 | for a tool-bar item. */ |
| 2586 | |
| 2587 | enum tool_bar_item_image |
| 2588 | { |
| 2589 | TOOL_BAR_IMAGE_ENABLED_SELECTED, |
| 2590 | TOOL_BAR_IMAGE_ENABLED_DESELECTED, |
| 2591 | TOOL_BAR_IMAGE_DISABLED_SELECTED, |
| 2592 | TOOL_BAR_IMAGE_DISABLED_DESELECTED |
| 2593 | }; |
| 2594 | |
| 2595 | /* Margin around tool-bar buttons in pixels. */ |
| 2596 | |
| 2597 | extern Lisp_Object Vtool_bar_button_margin; |
| 2598 | |
| 2599 | /* Thickness of relief to draw around tool-bar buttons. */ |
| 2600 | |
| 2601 | extern EMACS_INT tool_bar_button_relief; |
| 2602 | |
| 2603 | /* Default values of the above variables. */ |
| 2604 | |
| 2605 | #define DEFAULT_TOOL_BAR_BUTTON_MARGIN 4 |
| 2606 | #define DEFAULT_TOOL_BAR_BUTTON_RELIEF 1 |
| 2607 | |
| 2608 | /* The height in pixels of the default tool-bar images. */ |
| 2609 | |
| 2610 | #define DEFAULT_TOOL_BAR_IMAGE_HEIGHT 24 |
| 2611 | |
| 2612 | \f |
| 2613 | /*********************************************************************** |
| 2614 | Terminal Capabilities |
| 2615 | ***********************************************************************/ |
| 2616 | |
| 2617 | /* Each of these is a bit representing a terminal `capability' (bold, |
| 2618 | inverse, etc). They are or'd together to specify the set of |
| 2619 | capabilities being queried for when calling `tty_capable_p' (which |
| 2620 | returns true if the terminal supports all of them). */ |
| 2621 | |
| 2622 | #define TTY_CAP_INVERSE 0x01 |
| 2623 | #define TTY_CAP_UNDERLINE 0x02 |
| 2624 | #define TTY_CAP_BOLD 0x04 |
| 2625 | #define TTY_CAP_DIM 0x08 |
| 2626 | #define TTY_CAP_BLINK 0x10 |
| 2627 | #define TTY_CAP_ALT_CHARSET 0x20 |
| 2628 | |
| 2629 | \f |
| 2630 | /*********************************************************************** |
| 2631 | Function Prototypes |
| 2632 | ***********************************************************************/ |
| 2633 | |
| 2634 | /* Defined in xdisp.c */ |
| 2635 | |
| 2636 | struct glyph_row *row_containing_pos P_ ((struct window *, int, |
| 2637 | struct glyph_row *, |
| 2638 | struct glyph_row *, int)); |
| 2639 | int string_buffer_position P_ ((struct window *, Lisp_Object, int)); |
| 2640 | int line_bottom_y P_ ((struct it *)); |
| 2641 | int display_prop_intangible_p P_ ((Lisp_Object)); |
| 2642 | void resize_echo_area_exactly P_ ((void)); |
| 2643 | int resize_mini_window P_ ((struct window *, int)); |
| 2644 | int try_window P_ ((Lisp_Object, struct text_pos, int)); |
| 2645 | void window_box P_ ((struct window *, int, int *, int *, int *, int *)); |
| 2646 | int window_box_height P_ ((struct window *)); |
| 2647 | int window_text_bottom_y P_ ((struct window *)); |
| 2648 | int window_box_width P_ ((struct window *, int)); |
| 2649 | int window_box_left P_ ((struct window *, int)); |
| 2650 | int window_box_left_offset P_ ((struct window *, int)); |
| 2651 | int window_box_right P_ ((struct window *, int)); |
| 2652 | int window_box_right_offset P_ ((struct window *, int)); |
| 2653 | void window_box_edges P_ ((struct window *, int, int *, int *, int *, int *)); |
| 2654 | int estimate_mode_line_height P_ ((struct frame *, enum face_id)); |
| 2655 | void pixel_to_glyph_coords P_ ((struct frame *, int, int, int *, int *, |
| 2656 | NativeRectangle *, int)); |
| 2657 | int glyph_to_pixel_coords P_ ((struct window *, int, int, int *, int *)); |
| 2658 | void remember_mouse_glyph P_ ((struct frame *, int, int, NativeRectangle *)); |
| 2659 | |
| 2660 | void mark_window_display_accurate P_ ((Lisp_Object, int)); |
| 2661 | void redisplay_preserve_echo_area P_ ((int)); |
| 2662 | int set_cursor_from_row P_ ((struct window *, struct glyph_row *, |
| 2663 | struct glyph_matrix *, int, int, int, int)); |
| 2664 | void init_iterator P_ ((struct it *, struct window *, int, |
| 2665 | int, struct glyph_row *, enum face_id)); |
| 2666 | void init_iterator_to_row_start P_ ((struct it *, struct window *, |
| 2667 | struct glyph_row *)); |
| 2668 | int get_next_display_element P_ ((struct it *)); |
| 2669 | void set_iterator_to_next P_ ((struct it *, int)); |
| 2670 | void produce_glyphs P_ ((struct it *)); |
| 2671 | void produce_special_glyphs P_ ((struct it *, enum display_element_type)); |
| 2672 | void start_display P_ ((struct it *, struct window *, struct text_pos)); |
| 2673 | void move_it_to P_ ((struct it *, int, int, int, int, int)); |
| 2674 | void move_it_vertically P_ ((struct it *, int)); |
| 2675 | void move_it_vertically_backward P_ ((struct it *, int)); |
| 2676 | void move_it_by_lines P_ ((struct it *, int, int)); |
| 2677 | void move_it_past_eol P_ ((struct it *)); |
| 2678 | int in_display_vector_p P_ ((struct it *)); |
| 2679 | int frame_mode_line_height P_ ((struct frame *)); |
| 2680 | void highlight_trailing_whitespace P_ ((struct frame *, struct glyph_row *)); |
| 2681 | extern Lisp_Object Qtool_bar; |
| 2682 | extern Lisp_Object Vshow_trailing_whitespace; |
| 2683 | extern int mode_line_in_non_selected_windows; |
| 2684 | extern int redisplaying_p; |
| 2685 | extern void add_to_log P_ ((char *, Lisp_Object, Lisp_Object)); |
| 2686 | extern int help_echo_showing_p; |
| 2687 | extern int current_mode_line_height, current_header_line_height; |
| 2688 | extern Lisp_Object help_echo_string, help_echo_window; |
| 2689 | extern Lisp_Object help_echo_object, previous_help_echo_string; |
| 2690 | extern int help_echo_pos; |
| 2691 | extern struct frame *last_mouse_frame; |
| 2692 | extern int last_tool_bar_item; |
| 2693 | extern Lisp_Object Vmouse_autoselect_window; |
| 2694 | extern int unibyte_display_via_language_environment; |
| 2695 | |
| 2696 | extern void reseat_at_previous_visible_line_start P_ ((struct it *)); |
| 2697 | |
| 2698 | extern int calc_pixel_width_or_height P_ ((double *, struct it *, Lisp_Object, |
| 2699 | /* XFontStruct */ void *, int, int *)); |
| 2700 | |
| 2701 | #ifdef HAVE_WINDOW_SYSTEM |
| 2702 | |
| 2703 | #if GLYPH_DEBUG |
| 2704 | extern void dump_glyph_string P_ ((struct glyph_string *)); |
| 2705 | #endif |
| 2706 | |
| 2707 | extern void x_get_glyph_overhangs P_ ((struct glyph *, struct frame *, |
| 2708 | int *, int *)); |
| 2709 | extern void x_produce_glyphs P_ ((struct it *)); |
| 2710 | |
| 2711 | extern void x_write_glyphs P_ ((struct glyph *, int)); |
| 2712 | extern void x_insert_glyphs P_ ((struct glyph *, int len)); |
| 2713 | extern void x_clear_end_of_line P_ ((int)); |
| 2714 | |
| 2715 | extern int x_stretch_cursor_p; |
| 2716 | extern struct cursor_pos output_cursor; |
| 2717 | |
| 2718 | extern void x_fix_overlapping_area P_ ((struct window *, struct glyph_row *, |
| 2719 | enum glyph_row_area, int)); |
| 2720 | extern void draw_phys_cursor_glyph P_ ((struct window *, |
| 2721 | struct glyph_row *, |
| 2722 | enum draw_glyphs_face)); |
| 2723 | extern void get_phys_cursor_geometry P_ ((struct window *, struct glyph_row *, |
| 2724 | struct glyph *, int *, int *, int *)); |
| 2725 | extern void erase_phys_cursor P_ ((struct window *)); |
| 2726 | extern void display_and_set_cursor P_ ((struct window *, |
| 2727 | int, int, int, int, int)); |
| 2728 | |
| 2729 | extern void set_output_cursor P_ ((struct cursor_pos *)); |
| 2730 | extern void x_cursor_to P_ ((int, int, int, int)); |
| 2731 | |
| 2732 | extern void x_update_cursor P_ ((struct frame *, int)); |
| 2733 | extern void x_clear_cursor P_ ((struct window *)); |
| 2734 | extern void x_draw_vertical_border P_ ((struct window *w)); |
| 2735 | |
| 2736 | extern void frame_to_window_pixel_xy P_ ((struct window *, int *, int *)); |
| 2737 | extern int get_glyph_string_clip_rects P_ ((struct glyph_string *, |
| 2738 | NativeRectangle *, int)); |
| 2739 | extern void get_glyph_string_clip_rect P_ ((struct glyph_string *, |
| 2740 | NativeRectangle *nr)); |
| 2741 | extern Lisp_Object find_hot_spot P_ ((Lisp_Object, int, int)); |
| 2742 | extern void note_mouse_highlight P_ ((struct frame *, int, int)); |
| 2743 | extern void x_clear_window_mouse_face P_ ((struct window *)); |
| 2744 | extern void cancel_mouse_face P_ ((struct frame *)); |
| 2745 | |
| 2746 | extern void handle_tool_bar_click P_ ((struct frame *, |
| 2747 | int, int, int, unsigned int)); |
| 2748 | |
| 2749 | /* msdos.c defines its own versions of these functions. */ |
| 2750 | extern int clear_mouse_face P_ ((Display_Info *)); |
| 2751 | extern void show_mouse_face P_ ((Display_Info *, enum draw_glyphs_face)); |
| 2752 | extern int cursor_in_mouse_face_p P_ ((struct window *w)); |
| 2753 | |
| 2754 | extern void expose_frame P_ ((struct frame *, int, int, int, int)); |
| 2755 | extern int x_intersect_rectangles P_ ((XRectangle *, XRectangle *, |
| 2756 | XRectangle *)); |
| 2757 | #endif |
| 2758 | |
| 2759 | /* Defined in fringe.c */ |
| 2760 | |
| 2761 | int lookup_fringe_bitmap (Lisp_Object); |
| 2762 | void draw_fringe_bitmap P_ ((struct window *, struct glyph_row *, int)); |
| 2763 | void draw_row_fringe_bitmaps P_ ((struct window *, struct glyph_row *)); |
| 2764 | int draw_window_fringes P_ ((struct window *, int)); |
| 2765 | int update_window_fringes P_ ((struct window *, int)); |
| 2766 | void compute_fringe_widths P_ ((struct frame *, int)); |
| 2767 | |
| 2768 | #ifdef WINDOWS_NT |
| 2769 | void w32_init_fringe P_ ((void)); |
| 2770 | void w32_reset_fringes P_ ((void)); |
| 2771 | #endif |
| 2772 | #ifdef MAC_OS |
| 2773 | void mac_init_fringe P_ ((void)); |
| 2774 | #endif |
| 2775 | |
| 2776 | /* Defined in image.c */ |
| 2777 | |
| 2778 | #ifdef HAVE_WINDOW_SYSTEM |
| 2779 | |
| 2780 | extern int x_bitmap_height P_ ((struct frame *, int)); |
| 2781 | extern int x_bitmap_width P_ ((struct frame *, int)); |
| 2782 | extern int x_bitmap_pixmap P_ ((struct frame *, int)); |
| 2783 | extern void x_reference_bitmap P_ ((struct frame *, int)); |
| 2784 | extern int x_create_bitmap_from_data P_ ((struct frame *, char *, |
| 2785 | unsigned int, unsigned int)); |
| 2786 | extern int x_create_bitmap_from_file P_ ((struct frame *, Lisp_Object)); |
| 2787 | #if defined (HAVE_XPM) && defined (HAVE_X_WINDOWS) |
| 2788 | extern int x_create_bitmap_from_xpm_data P_ ((struct frame *f, char **bits)); |
| 2789 | #endif |
| 2790 | #ifndef x_destroy_bitmap |
| 2791 | extern void x_destroy_bitmap P_ ((struct frame *, int)); |
| 2792 | #endif |
| 2793 | extern void x_destroy_all_bitmaps P_ ((Display_Info *)); |
| 2794 | extern int x_create_bitmap_mask P_ ((struct frame * , int)); |
| 2795 | extern Lisp_Object x_find_image_file P_ ((Lisp_Object)); |
| 2796 | |
| 2797 | void x_kill_gs_process P_ ((Pixmap, struct frame *)); |
| 2798 | struct image_cache *make_image_cache P_ ((void)); |
| 2799 | void free_image_cache P_ ((struct frame *)); |
| 2800 | void clear_image_cache P_ ((struct frame *, int)); |
| 2801 | void forall_images_in_image_cache P_ ((struct frame *, |
| 2802 | void (*) P_ ((struct image *)))); |
| 2803 | int valid_image_p P_ ((Lisp_Object)); |
| 2804 | void prepare_image_for_display P_ ((struct frame *, struct image *)); |
| 2805 | int lookup_image P_ ((struct frame *, Lisp_Object)); |
| 2806 | |
| 2807 | unsigned long image_background P_ ((struct image *, struct frame *, |
| 2808 | XImagePtr_or_DC ximg)); |
| 2809 | int image_background_transparent P_ ((struct image *, struct frame *, |
| 2810 | XImagePtr_or_DC mask)); |
| 2811 | |
| 2812 | int image_ascent P_ ((struct image *, struct face *, struct glyph_slice *)); |
| 2813 | |
| 2814 | #endif |
| 2815 | |
| 2816 | /* Defined in sysdep.c */ |
| 2817 | |
| 2818 | void get_frame_size P_ ((int *, int *)); |
| 2819 | void request_sigio P_ ((void)); |
| 2820 | void unrequest_sigio P_ ((void)); |
| 2821 | int tabs_safe_p P_ ((void)); |
| 2822 | void init_baud_rate P_ ((void)); |
| 2823 | void init_sigio P_ ((int)); |
| 2824 | |
| 2825 | /* Defined in xfaces.c */ |
| 2826 | |
| 2827 | #ifdef HAVE_X_WINDOWS |
| 2828 | void x_free_colors P_ ((struct frame *, unsigned long *, int)); |
| 2829 | #endif |
| 2830 | |
| 2831 | void update_face_from_frame_parameter P_ ((struct frame *, Lisp_Object, |
| 2832 | Lisp_Object)); |
| 2833 | Lisp_Object tty_color_name P_ ((struct frame *, int)); |
| 2834 | void clear_face_cache P_ ((int)); |
| 2835 | unsigned long load_color P_ ((struct frame *, struct face *, Lisp_Object, |
| 2836 | enum lface_attribute_index)); |
| 2837 | void unload_color P_ ((struct frame *, unsigned long)); |
| 2838 | int face_font_available_p P_ ((struct frame *, Lisp_Object)); |
| 2839 | int ascii_face_of_lisp_face P_ ((struct frame *, int)); |
| 2840 | void prepare_face_for_display P_ ((struct frame *, struct face *)); |
| 2841 | int xstricmp P_ ((const unsigned char *, const unsigned char *)); |
| 2842 | int lookup_face P_ ((struct frame *, Lisp_Object *, int, struct face *)); |
| 2843 | int lookup_named_face P_ ((struct frame *, Lisp_Object, int, int)); |
| 2844 | int smaller_face P_ ((struct frame *, int, int)); |
| 2845 | int face_with_height P_ ((struct frame *, int, int)); |
| 2846 | int lookup_derived_face P_ ((struct frame *, Lisp_Object, int, int, int)); |
| 2847 | void init_frame_faces P_ ((struct frame *)); |
| 2848 | void free_frame_faces P_ ((struct frame *)); |
| 2849 | void recompute_basic_faces P_ ((struct frame *)); |
| 2850 | int face_at_buffer_position P_ ((struct window *, int, int, int, int *, |
| 2851 | int, int)); |
| 2852 | int face_at_string_position P_ ((struct window *, Lisp_Object, int, int, int, |
| 2853 | int, int *, enum face_id, int)); |
| 2854 | int merge_faces P_ ((struct frame *, Lisp_Object, int, int)); |
| 2855 | int compute_char_face P_ ((struct frame *, int, Lisp_Object)); |
| 2856 | void free_all_realized_faces P_ ((Lisp_Object)); |
| 2857 | extern Lisp_Object Qforeground_color, Qbackground_color; |
| 2858 | extern Lisp_Object Qframe_set_background_mode; |
| 2859 | extern char unspecified_fg[], unspecified_bg[]; |
| 2860 | void free_realized_multibyte_face P_ ((struct frame *, int)); |
| 2861 | |
| 2862 | /* Defined in xfns.c */ |
| 2863 | |
| 2864 | #ifdef HAVE_X_WINDOWS |
| 2865 | void gamma_correct P_ ((struct frame *, XColor *)); |
| 2866 | #endif |
| 2867 | #ifdef WINDOWSNT |
| 2868 | void gamma_correct P_ ((struct frame *, COLORREF *)); |
| 2869 | #endif |
| 2870 | #ifdef MAC_OS |
| 2871 | void gamma_correct P_ ((struct frame *, unsigned long *)); |
| 2872 | #endif |
| 2873 | |
| 2874 | #ifdef HAVE_WINDOW_SYSTEM |
| 2875 | |
| 2876 | int x_screen_planes P_ ((struct frame *)); |
| 2877 | void x_implicitly_set_name P_ ((struct frame *, Lisp_Object, Lisp_Object)); |
| 2878 | |
| 2879 | extern Lisp_Object tip_frame; |
| 2880 | extern Window tip_window; |
| 2881 | EXFUN (Fx_show_tip, 6); |
| 2882 | EXFUN (Fx_hide_tip, 0); |
| 2883 | extern void start_hourglass P_ ((void)); |
| 2884 | extern void cancel_hourglass P_ ((void)); |
| 2885 | extern int hourglass_started P_ ((void)); |
| 2886 | extern int display_hourglass_p; |
| 2887 | |
| 2888 | /* Returns the background color of IMG, calculating one heuristically if |
| 2889 | necessary. If non-zero, XIMG is an existing XImage object to use for |
| 2890 | the heuristic. */ |
| 2891 | |
| 2892 | #define IMAGE_BACKGROUND(img, f, ximg) \ |
| 2893 | ((img)->background_valid \ |
| 2894 | ? (img)->background \ |
| 2895 | : image_background (img, f, ximg)) |
| 2896 | |
| 2897 | /* Returns true if IMG has a `transparent' background, using heuristics |
| 2898 | to decide if necessary. If non-zero, MASK is an existing XImage |
| 2899 | object to use for the heuristic. */ |
| 2900 | |
| 2901 | #define IMAGE_BACKGROUND_TRANSPARENT(img, f, mask) \ |
| 2902 | ((img)->background_transparent_valid \ |
| 2903 | ? (img)->background_transparent \ |
| 2904 | : image_background_transparent (img, f, mask)) |
| 2905 | |
| 2906 | #endif /* HAVE_WINDOW_SYSTEM */ |
| 2907 | |
| 2908 | |
| 2909 | /* Defined in xmenu.c */ |
| 2910 | |
| 2911 | int popup_activated P_ ((void)); |
| 2912 | |
| 2913 | /* Defined in dispnew.c */ |
| 2914 | |
| 2915 | extern int inverse_video; |
| 2916 | extern int required_matrix_width P_ ((struct window *)); |
| 2917 | extern int required_matrix_height P_ ((struct window *)); |
| 2918 | extern Lisp_Object buffer_posn_from_coords P_ ((struct window *, |
| 2919 | int *, int *, |
| 2920 | struct display_pos *, |
| 2921 | Lisp_Object *, |
| 2922 | int *, int *, int *, int *)); |
| 2923 | extern Lisp_Object mode_line_string P_ ((struct window *, enum window_part, |
| 2924 | int *, int *, int *, |
| 2925 | Lisp_Object *, |
| 2926 | int *, int *, int *, int *)); |
| 2927 | extern Lisp_Object marginal_area_string P_ ((struct window *, enum window_part, |
| 2928 | int *, int *, int *, |
| 2929 | Lisp_Object *, |
| 2930 | int *, int *, int *, int *)); |
| 2931 | extern void redraw_frame P_ ((struct frame *)); |
| 2932 | extern void redraw_garbaged_frames P_ ((void)); |
| 2933 | extern void cancel_line P_ ((int, struct frame *)); |
| 2934 | extern void init_desired_glyphs P_ ((struct frame *)); |
| 2935 | extern int scroll_frame_lines P_ ((struct frame *, int, int, int, int)); |
| 2936 | extern int direct_output_for_insert P_ ((int)); |
| 2937 | extern int direct_output_forward_char P_ ((int)); |
| 2938 | extern int update_frame P_ ((struct frame *, int, int)); |
| 2939 | extern int scrolling P_ ((struct frame *)); |
| 2940 | extern void bitch_at_user P_ ((void)); |
| 2941 | void adjust_glyphs P_ ((struct frame *)); |
| 2942 | void free_glyphs P_ ((struct frame *)); |
| 2943 | void free_window_matrices P_ ((struct window *)); |
| 2944 | void check_glyph_memory P_ ((void)); |
| 2945 | void mirrored_line_dance P_ ((struct glyph_matrix *, int, int, int *, char *)); |
| 2946 | void clear_glyph_matrix P_ ((struct glyph_matrix *)); |
| 2947 | void clear_current_matrices P_ ((struct frame *f)); |
| 2948 | void clear_desired_matrices P_ ((struct frame *)); |
| 2949 | void shift_glyph_matrix P_ ((struct window *, struct glyph_matrix *, |
| 2950 | int, int, int)); |
| 2951 | void rotate_matrix P_ ((struct glyph_matrix *, int, int, int)); |
| 2952 | void increment_matrix_positions P_ ((struct glyph_matrix *, |
| 2953 | int, int, int, int)); |
| 2954 | void blank_row P_ ((struct window *, struct glyph_row *, int)); |
| 2955 | void increment_row_positions P_ ((struct glyph_row *, int, int)); |
| 2956 | void enable_glyph_matrix_rows P_ ((struct glyph_matrix *, int, int, int)); |
| 2957 | void clear_glyph_row P_ ((struct glyph_row *)); |
| 2958 | void prepare_desired_row P_ ((struct glyph_row *)); |
| 2959 | int line_hash_code P_ ((struct glyph_row *)); |
| 2960 | void set_window_update_flags P_ ((struct window *, int)); |
| 2961 | void write_glyphs P_ ((struct glyph *, int)); |
| 2962 | void insert_glyphs P_ ((struct glyph *, int)); |
| 2963 | void redraw_frame P_ ((struct frame *)); |
| 2964 | void redraw_garbaged_frames P_ ((void)); |
| 2965 | int scroll_cost P_ ((struct frame *, int, int, int)); |
| 2966 | int direct_output_for_insert P_ ((int)); |
| 2967 | int direct_output_forward_char P_ ((int)); |
| 2968 | int update_frame P_ ((struct frame *, int, int)); |
| 2969 | void update_single_window P_ ((struct window *, int)); |
| 2970 | int scrolling P_ ((struct frame *)); |
| 2971 | void do_pending_window_change P_ ((int)); |
| 2972 | void change_frame_size P_ ((struct frame *, int, int, int, int, int)); |
| 2973 | void bitch_at_user P_ ((void)); |
| 2974 | void init_display P_ ((void)); |
| 2975 | void syms_of_display P_ ((void)); |
| 2976 | extern Lisp_Object Qredisplay_dont_pause; |
| 2977 | GLYPH spec_glyph_lookup_face P_ ((struct window *, GLYPH)); |
| 2978 | |
| 2979 | /* Defined in term.c */ |
| 2980 | |
| 2981 | extern void ring_bell P_ ((void)); |
| 2982 | extern void set_terminal_modes P_ ((void)); |
| 2983 | extern void reset_terminal_modes P_ ((void)); |
| 2984 | extern void update_begin P_ ((struct frame *)); |
| 2985 | extern void update_end P_ ((struct frame *)); |
| 2986 | extern void set_terminal_window P_ ((int)); |
| 2987 | extern void set_scroll_region P_ ((int, int)); |
| 2988 | extern void turn_off_insert P_ ((void)); |
| 2989 | extern void turn_off_highlight P_ ((void)); |
| 2990 | extern void background_highlight P_ ((void)); |
| 2991 | extern void clear_frame P_ ((void)); |
| 2992 | extern void clear_end_of_line P_ ((int)); |
| 2993 | extern void clear_end_of_line_raw P_ ((int)); |
| 2994 | extern void delete_glyphs P_ ((int)); |
| 2995 | extern void ins_del_lines P_ ((int, int)); |
| 2996 | extern int string_cost P_ ((char *)); |
| 2997 | extern int per_line_cost P_ ((char *)); |
| 2998 | extern void calculate_costs P_ ((struct frame *)); |
| 2999 | extern void set_tty_color_mode P_ ((struct frame *, Lisp_Object)); |
| 3000 | extern void tty_setup_colors P_ ((int)); |
| 3001 | extern void term_init P_ ((char *)); |
| 3002 | void cursor_to P_ ((int, int)); |
| 3003 | extern int tty_capable_p P_ ((struct frame *, unsigned, unsigned long, unsigned long)); |
| 3004 | |
| 3005 | /* Defined in scroll.c */ |
| 3006 | |
| 3007 | extern int scrolling_max_lines_saved P_ ((int, int, int *, int *, int *)); |
| 3008 | extern int scroll_cost P_ ((struct frame *, int, int, int)); |
| 3009 | extern void do_line_insertion_deletion_costs P_ ((struct frame *, char *, |
| 3010 | char *, char *, char *, |
| 3011 | char *, char *, int)); |
| 3012 | void scrolling_1 P_ ((struct frame *, int, int, int, int *, int *, int *, |
| 3013 | int *, int)); |
| 3014 | |
| 3015 | /* Defined in frame.c */ |
| 3016 | |
| 3017 | #ifdef HAVE_WINDOW_SYSTEM |
| 3018 | |
| 3019 | /* Types we might convert a resource string into. */ |
| 3020 | enum resource_types |
| 3021 | { |
| 3022 | RES_TYPE_NUMBER, |
| 3023 | RES_TYPE_FLOAT, |
| 3024 | RES_TYPE_BOOLEAN, |
| 3025 | RES_TYPE_STRING, |
| 3026 | RES_TYPE_SYMBOL |
| 3027 | }; |
| 3028 | |
| 3029 | extern Lisp_Object x_get_arg P_ ((Display_Info *, Lisp_Object, |
| 3030 | Lisp_Object, char *, char *class, |
| 3031 | enum resource_types)); |
| 3032 | extern Lisp_Object x_frame_get_arg P_ ((struct frame *, Lisp_Object, |
| 3033 | Lisp_Object, char *, char *, |
| 3034 | enum resource_types)); |
| 3035 | extern Lisp_Object x_frame_get_and_record_arg P_ (( |
| 3036 | struct frame *, Lisp_Object, |
| 3037 | Lisp_Object, char *, char *, |
| 3038 | enum resource_types)); |
| 3039 | extern Lisp_Object x_default_parameter P_ ((struct frame *, Lisp_Object, |
| 3040 | Lisp_Object, Lisp_Object, |
| 3041 | char *, char *, |
| 3042 | enum resource_types)); |
| 3043 | |
| 3044 | #endif /* HAVE_WINDOW_SYSTEM */ |
| 3045 | |
| 3046 | #endif /* not DISPEXTERN_H_INCLUDED */ |
| 3047 | |
| 3048 | /* arch-tag: c65c475f-1c1e-4534-8795-990b8509fd65 |
| 3049 | (do not change this comment) */ |