home *** CD-ROM | disk | FTP | other *** search
- /* Interface definitions for display code.
- Copyright (C) 1985, 1993 Free Software Foundation, Inc.
-
- This file is part of GNU Emacs.
-
- GNU Emacs is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2, or (at your option)
- any later version.
-
- GNU Emacs is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with GNU Emacs; see the file COPYING. If not, write to
- the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
-
- /* Nonzero means last display completed and cursor is really at
- cursX, cursY. Zero means it was preempted. */
- extern int display_completed;
-
- #ifdef HAVE_X_WINDOWS
- #include <X11/Xlib.h>
-
- struct face
- {
- /* If this is non-zero, it is a GC we can use without modification
- to represent this face. */
- GC gc;
-
- /* If we have ever called get_cached_face on this face structure,
- here is the index in face_vector of the face it returned. It
- might not be valid any more, but it's a good place to start
- looking; get_cached_face tries to use this to avoid searching
- all of face_vector. */
- int cached_index;
-
- /* Pixel value for foreground color. */
- int foreground;
-
- /* Pixel value for background color. */
- int background;
-
- /* Font used for this face. */
- XFontStruct *font;
-
- /* Background stipple or bitmap used for this face. */
- Pixmap stipple;
-
- /* Pixmap_depth. */
- unsigned int pixmap_w, pixmap_h;
-
- /* Whether or not to underline text in this face. */
- char underline;
- };
-
- /* Let's stop using this and get rid of it. */
- typedef struct face *FACE;
-
- #define NORMAL_FACE ((struct face *) 0)
-
- #define FACE_HAS_GC(f) ((f)->gc)
- #define FACE_GC(f) ((f)->gc)
- #define FACE_FOREGROUND(f) ((f)->foreground)
- #define FACE_BACKGROUND(f) ((f)->background)
- #define FACE_FONT(f) ((f)->font)
- #define FACE_STIPPLE(f) ((f)->stipple)
- #define FACE_UNDERLINE_P(f) ((f)->underline)
-
- #else /* Not X */
-
- typedef int FACE;
-
- #define NORMAL_FACE 0x0
- #define HIGHLIGHT_FACE 0x1
- #define UNDERLINE_FACE 0x2
- #define HIGHLIGHT_UNDERLINE_FACE 0x3
-
- #define FACE_HIGHLIGHT(f) ((f) & 0x1)
- #define FACE_UNDERLINE(f) ((f) & 0x2)
- #endif /* Not X */
-
-
- /* This structure is used for the actual display of text on a frame.
-
- There are two instantiations of it: the glyphs currently displayed,
- and the glyphs we desire to display. The latter object is generated
- from buffers being displayed. */
-
- struct frame_glyphs
- {
- #ifdef MULTI_FRAME
- struct frame *frame; /* Frame these glyphs belong to. */
- #endif /* MULTI_FRAME */
- int height;
- int width;
-
- /* Contents of the frame.
- glyphs[V][H] is the glyph at position V, H.
- Note that glyphs[V][-1],
- glyphs[V][used[V]],
- and glyphs[V][frame_width] are always '\0'. */
- GLYPH **glyphs;
- /* long vector from which the strings in `glyphs' are taken. */
- GLYPH *total_contents;
-
- /* When representing a desired frame,
- enable[n] == 0 means that line n is same as current frame.
- Between updates, all lines should be disabled.
- When representing current frame contents,
- enable[n] == 0 means that line n is blank. */
- char *enable;
-
- /* Everything on line n after column used[n] is considered blank. */
- int *used;
-
- /* highlight[n] != 0 iff line n is highlighted. */
- char *highlight;
-
- /* Buffer offset of this line's first char. */
- int *bufp;
-
- #ifdef HAVE_X_WINDOWS
- /* Pixel position of top left corner of line. */
- short *top_left_x;
- short *top_left_y;
-
- /* Pixel width of line. */
- short *pix_width;
-
- /* Pixel height of line. */
- short *pix_height;
-
- /* Largest font ascent on this line. */
- short *max_ascent;
- #endif /* HAVE_X_WINDOWS */
- };
-
- extern void get_display_line ();
- extern Lisp_Object sit_for ();
-