HCoop / bpt / emacs.git / blame
| Commit | Line | Data |
|---|---|---|
| c22ca93b | 1 | /* Interface definitions for display code. |
| e5d77022 | 2 | Copyright (C) 1985, 1992 Free Software Foundation, Inc. |
| c22ca93b JB |
3 | |
| 4 | This file is part of GNU Emacs. | |
| 5 | ||
| 6 | GNU Emacs is free software; you can redistribute it and/or modify | |
| 7 | it under the terms of the GNU General Public License as published by | |
| e5d77022 | 8 | the Free Software Foundation; either version 2, or (at your option) |
| c22ca93b JB |
9 | any later version. |
| 10 | ||
| 11 | GNU Emacs is distributed in the hope that it will be useful, | |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 14 | GNU General Public License for more details. | |
| 15 | ||
| 16 | You should have received a copy of the GNU General Public License | |
| 17 | along with GNU Emacs; see the file COPYING. If not, write to | |
| 18 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
| 19 | ||
| 20 | /* Nonzero means don't assume anything about current | |
| 21 | contents of actual terminal screen */ | |
| 22 | extern int screen_garbaged; | |
| 23 | ||
| 24 | /* Nonzero means last display completed and cursor is really at | |
| 25 | cursX, cursY. Zero means it was preempted. */ | |
| 26 | extern int display_completed; | |
| 27 | ||
| 28 | #ifdef HAVE_X_WINDOWS | |
| 29 | struct run | |
| 30 | { | |
| 31 | int begin_run; | |
| 32 | int len; | |
| 33 | int face_code; /* Also handles underlining. */ | |
| 34 | }; | |
| 35 | #endif | |
| 36 | ||
| 37 | /* This structure is used for the actual display of text on a screen. | |
| 38 | ||
| 39 | There are two instantiations of it: the glyphs currently displayed, | |
| 40 | and the glyphs we desire to display. The latter object is generated | |
| 41 | from buffers being displayed. */ | |
| 42 | ||
| 43 | struct screen_glyphs | |
| 44 | { | |
| 45 | #ifdef MULTI_SCREEN | |
| 46 | struct screen *screen; /* Screen these glyphs belong to. */ | |
| 47 | #endif /* MULTI_SCREEN */ | |
| 48 | int height; | |
| 49 | int width; | |
| 50 | ||
| 265a9e55 JB |
51 | /* Contents of the screen. |
| 52 | glyphs[V][H] is the glyph at position V, H. | |
| 53 | Note that glyphs[V][-1], | |
| 54 | glyphs[V][used[V]], | |
| 55 | and glyphs[V][screen_width] are always '\0'. */ | |
| c22ca93b JB |
56 | GLYPH **glyphs; |
| 57 | /* long vector from which the strings in `glyphs' are taken. */ | |
| 58 | GLYPH *total_contents; | |
| 59 | ||
| 265a9e55 JB |
60 | /* When representing a desired screen, |
| 61 | enable[n] == 0 means that line n is same as current screen. | |
| 62 | When representing current screen contents, | |
| 63 | enable[n] == 0 means that line n is blank. */ | |
| 64 | char *enable; | |
| 65 | ||
| 66 | /* Everything on line n after column used[n] is considered blank. */ | |
| 67 | int *used; | |
| 68 | ||
| c22ca93b JB |
69 | /* highlight[n] != 0 iff line n is highlighted. */ |
| 70 | char *highlight; | |
| 71 | ||
| c22ca93b JB |
72 | |
| 73 | /* Buffer offset of this line's first char. */ | |
| 74 | int *bufp; | |
| 75 | ||
| 76 | #ifdef HAVE_X_WINDOWS | |
| 77 | int *nruns; /* N runs of differently displayed text. */ | |
| 78 | struct run **face_list; | |
| 79 | short *top_left_x; /* Pixel position of top left corner */ | |
| 80 | short *top_left_y; | |
| 81 | short *pix_width; /* Pixel width of line. */ | |
| 82 | short *pix_height; /* Pixel height of line. */ | |
| 83 | #endif /* HAVE_X_WINDOWS */ | |
| 84 | }; | |
| 85 | ||
| 86 | #if 0 | |
| 87 | #define LINE_HEIGHT(s,n) (current_glyphs->pix_height[n]) | |
| 88 | #define LINE_WIDTH(s,n) (current_glyphs->pix_width[n]) | |
| 89 | #endif | |
| 90 | ||
| 91 | #define LINE_HEIGHT(s,n) (FONT_HEIGHT((s)->display.x->font)) | |
| 92 | #define LINE_WIDTH(s,n) (FONT_HEIGHT((s)->display.x->font) \ | |
| 93 | * SCREEN_CURRENT_GLYPHS(s)->enable[(n)]) | |
| 94 | ||
| 95 | extern void get_display_line (); |