/* Interface definitions for display code.
- Copyright (C) 1985, 1992 Free Software Foundation, Inc.
+ Copyright (C) 1985, 1993, 1994 Free Software Foundation, Inc.
This file is part of GNU Emacs.
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 don't assume anything about current
- contents of actual terminal frame */
-extern int frame_garbaged;
-
/* Nonzero means last display completed and cursor is really at
cursX, cursY. Zero means it was preempted. */
extern int display_completed;
struct face
{
/* If this is non-zero, it is a GC we can use without modification
- to represent this face. */
+ 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. */
+ /* Pixel value for foreground color. */
int foreground;
- /* Pixel value for background color. */
+ /* Pixel value for background color. */
int background;
- /* Font used for this face */
- XFontStruct font;
+ /* Font used for this face. */
+ XFontStruct *font;
- /* Background stipple or bitmap used for this face. */
+ /* 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. */
+ /* 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 ((FACE *) 0)
+#define NORMAL_FACE ((struct face *) 0)
#define FACE_HAS_GC(f) ((f)->gc)
#define FACE_GC(f) ((f)->gc)
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. */
+ from buffers being displayed. */
struct frame_glyphs
{
#ifdef MULTI_FRAME
- struct frame *frame; /* Frame these glyphs belong to. */
+ struct frame *frame; /* Frame these glyphs belong to. */
#endif /* MULTI_FRAME */
int height;
int width;
/* 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;
/* 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
- /* Pixel position of top left corner of line. */
+ /* Pixel position of top left corner of line. */
short *top_left_x;
short *top_left_y;
- /* Pixel width of line. */
+ /* Pixel width of line. */
short *pix_width;
- /* Pixel height of line. */
+ /* Pixel height of line. */
short *pix_height;
- /* Largest font ascent on this line. */
+ /* Largest font ascent on this line. */
short *max_ascent;
#endif /* HAVE_X_WINDOWS */
+
+ /* 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 ();