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This commit is contained in:
Ian Keane 2020-02-18 14:21:14 -05:00
parent 276853ba84
commit 1cb167b597
361 changed files with 77302 additions and 4 deletions
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42
sbcl/.quicklisp/dists/quicklisp/software/croatoan-20191227-git/ncurses/getyx.lisp Normal file
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;; (in-package :de.anvi.ncurses)
;;; getyx
;;; get curses cursor and window coordinates
;;; http://invisible-island.net/ncurses/man/curs_getyx.3x.html
;;; C prototypes
;; void getyx(WINDOW *win, int y, int x);
;; void getparyx(WINDOW *win, int y, int x);
;; void getbegyx(WINDOW *win, int y, int x);
;; void getmaxyx(WINDOW *win, int y, int x);
;;; Low-level CFFI wrappers
;; see legacy.lisp
;;; NOTES
#|
These four C macros are defined in terms of other, simpler macros:
#define getyx(win,y,x) (y = getcury(win), x = getcurx(win))
#define getbegyx(win,y,x) (y = getbegy(win), x = getbegx(win))
#define getmaxyx(win,y,x) (y = getmaxy(win), x = getmaxx(win))
#define getparyx(win,y,x) (y = getpary(win), x = getparx(win))
And those simpler macros are just accessing the window struct.
#define getcurx(win) ((win) ? (win)->_curx : ERR)
#define getcury(win) ((win) ? (win)->_cury : ERR)
#define getbegx(win) ((win) ? (win)->_begx : ERR)
#define getbegy(win) ((win) ? (win)->_begy : ERR)
#define getmaxx(win) ((win) ? ((win)->_maxx + 1) : ERR)
#define getmaxy(win) ((win) ? ((win)->_maxy + 1) : ERR)
#define getparx(win) ((win) ? (win)->_parx : ERR)
#define getpary(win) ((win) ? (win)->_pary : ERR)
Those are defined as low-level functions in legacy.lisp.
|#