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135 lines
3.8 KiB
C
135 lines
3.8 KiB
C
/* Interface definitions for display code.
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Copyright (C) 1985, 1992 Free Software Foundation, Inc.
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This file is part of GNU Emacs.
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GNU Emacs is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Emacs is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Emacs; see the file COPYING. If not, write to
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the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
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/* Nonzero means last display completed and cursor is really at
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cursX, cursY. Zero means it was preempted. */
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extern int display_completed;
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#ifdef HAVE_X_WINDOWS
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#include <X11/Xlib.h>
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struct face
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{
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/* If this is non-zero, it is a GC we can use without modification
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to represent this face. */
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GC gc;
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/* Pixel value for foreground color. */
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int foreground;
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/* Pixel value for background color. */
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int background;
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/* Font used for this face. */
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XFontStruct *font;
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/* Background stipple or bitmap used for this face. */
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Pixmap stipple;
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/* Pixmap_depth. */
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unsigned int pixmap_w, pixmap_h;
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/* Whether or not to underline text in this face. */
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char underline;
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};
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/* Let's stop using this and get rid of it. */
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typedef struct face *FACE;
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#define NORMAL_FACE ((struct face *) 0)
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#define FACE_HAS_GC(f) ((f)->gc)
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#define FACE_GC(f) ((f)->gc)
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#define FACE_FOREGROUND(f) ((f)->foreground)
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#define FACE_BACKGROUND(f) ((f)->background)
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#define FACE_FONT(f) ((f)->font)
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#define FACE_STIPPLE(f) ((f)->stipple)
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#define FACE_UNDERLINE_P(f) ((f)->underline)
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#else /* Not X */
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typedef int FACE;
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#define NORMAL_FACE 0x0
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#define HIGHLIGHT_FACE 0x1
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#define UNDERLINE_FACE 0x2
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#define HIGHLIGHT_UNDERLINE_FACE 0x3
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#define FACE_HIGHLIGHT(f) ((f) & 0x1)
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#define FACE_UNDERLINE(f) ((f) & 0x2)
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#endif /* Not X */
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/* This structure is used for the actual display of text on a frame.
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There are two instantiations of it: the glyphs currently displayed,
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and the glyphs we desire to display. The latter object is generated
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from buffers being displayed. */
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struct frame_glyphs
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{
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#ifdef MULTI_FRAME
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struct frame *frame; /* Frame these glyphs belong to. */
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#endif /* MULTI_FRAME */
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int height;
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int width;
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/* Contents of the frame.
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glyphs[V][H] is the glyph at position V, H.
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Note that glyphs[V][-1],
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glyphs[V][used[V]],
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and glyphs[V][frame_width] are always '\0'. */
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GLYPH **glyphs;
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/* long vector from which the strings in `glyphs' are taken. */
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GLYPH *total_contents;
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/* When representing a desired frame,
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enable[n] == 0 means that line n is same as current frame.
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Between updates, all lines should be disabled.
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When representing current frame contents,
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enable[n] == 0 means that line n is blank. */
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char *enable;
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/* Everything on line n after column used[n] is considered blank. */
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int *used;
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/* highlight[n] != 0 iff line n is highlighted. */
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char *highlight;
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/* Buffer offset of this line's first char. */
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int *bufp;
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#ifdef HAVE_X_WINDOWS
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/* Pixel position of top left corner of line. */
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short *top_left_x;
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short *top_left_y;
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/* Pixel width of line. */
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short *pix_width;
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/* Pixel height of line. */
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short *pix_height;
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/* Largest font ascent on this line. */
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short *max_ascent;
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#endif /* HAVE_X_WINDOWS */
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};
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extern void get_display_line ();
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extern Lisp_Object sit_for ();
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