1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
|
/* Copyright 2007, 2008 Peter Klausler. See COPYING for license. */
#ifndef LOCUS_H
#define LOCUS_H
/* A locus is a fixed point in a view, an offset that get adjusted
* when insertions and deletions occur before its position.
*/
typedef unsigned locus_t;
/* loci in all views */
#define CURSOR 0
#define MARK 1
#define NO_LOCUS (~0u)
#define DEFAULT_LOCI (MARK+1)
#define UNSET (~0)
struct view;
locus_t locus_create(struct view *, position_t);
void locus_destroy(struct view *, locus_t);
position_t locus_get(struct view *, locus_t);
position_t locus_set(struct view *, locus_t, position_t);
void loci_adjust(struct view *, position_t, int delta);
#endif
|
