/* Interface definitions for display code.
- Copyright (C) 1985, 1993 Free Software Foundation, Inc.
+ Copyright (C) 1985, 1993, 1994 Free Software Foundation, Inc.
This file is part of GNU Emacs.
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. */
+the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA. */
+
+#ifndef _DISPEXTERN_H_
+#define _DISPEXTERN_H_
/* Nonzero means last display completed and cursor is really at
cursX, cursY. Zero means it was preempted. */
#ifdef HAVE_X_WINDOWS
#include <X11/Xlib.h>
+#endif
+
+#ifdef MSDOS
+#include "msdos.h"
+#endif
+#ifdef HAVE_NTGUI
+#include "win32.h"
+#endif
+
+#ifdef HAVE_FACES
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;
+ EMACS_UINT foreground;
/* Pixel value for background color. */
- int background;
+ EMACS_UINT background;
/* Font used for this face. */
XFontStruct *font;
/* Whether or not to underline text in this face. */
char underline;
-
- /* Does this face own its resources? (color, font, etcetera)
- If this is a face which we computed by combining other faces,
- then this is true, and we shouldn't free any of the resources
- it refers to; the faces from which it was constructed own it.
- On the other hand, if this is a face the user created and
- filled in directly, then this is false, and we should free the
- resources when we free it. */
- char copy;
};
/* Let's stop using this and get rid of it. */
#define FACE_STIPPLE(f) ((f)->stipple)
#define FACE_UNDERLINE_P(f) ((f)->underline)
-#else /* Not X */
+#else /* not HAVE_FACES */
typedef int FACE;
#define FACE_HIGHLIGHT(f) ((f) & 0x1)
#define FACE_UNDERLINE(f) ((f) & 0x2)
-#endif /* Not X */
+
+#endif /* not HAVE_FACES */
/* This structure is used for the actual display of text on a frame.
/* highlight[n] != 0 iff line n is highlighted. */
char *highlight;
- /* Buffer offset of this line's first char. */
+ /* Buffer offset of this line's first char.
+ This is not really implemented, and cannot be,
+ and should be deleted. */
int *bufp;
-#ifdef HAVE_X_WINDOWS
+#ifdef HAVE_WINDOW_SYSTEM
/* Pixel position of top left corner of line. */
short *top_left_x;
short *top_left_y;
/* Largest font ascent on this line. */
short *max_ascent;
-#endif /* HAVE_X_WINDOWS */
+#endif /* HAVE_WINDOW_SYSTEM */
+
+ /* Mapping of coordinate pairs to buffer positions.
+ This field holds a vector indexed by row number.
+ Its elements are vectors indexed by column number.
+ Each element of these vectors is a buffer position, 0, or -1.
+
+ For a column where the image of a text character starts,
+ the element value is the buffer position of that character.
+ When a window's screen line starts in mid character,
+ the element for the line's first column (at the window's left margin)
+ is that character's position.
+ For successive columns within a multicolumn character,
+ the element is -1.
+ For the column just beyond the last glyph on a line,
+ the element is the buffer position of the end of the line.
+ For following columns within the same window, the element is 0.
+ For rows past the end of the accessible buffer text,
+ the window's first column has ZV and other columns have 0.
+
+ Mode lines and vertical separator lines have 0.
+
+ The column of a window's left margin
+ always has a positive value (a buffer position), not 0 or -1,
+ for each line in that window's interior. */
+
+ int **charstarts;
+
+ /* This holds all the space in the subvectors of the charstarts field. */
+ int *total_charstarts;
};
extern void get_display_line ();
extern Lisp_Object sit_for ();
+
+#endif /* not _DISPEXTERN_H_ */