scx/scheme/xlib/utility.scm

104 lines
2.4 KiB
Scheme

; Author: Norbert Freudemann
(define (str-or-sym->str thing)
(if (symbol? thing)
(symbol->string thing)
thing))
; The C-procedures for (xlib-release-X-or-later?) are in the
; file init.c
(import-lambda-definition xlib-release-4-or-later? ()
"scx_Xlib_Release_4_Or_Later")
(import-lambda-definition xlib-release-5-or-later? ()
"scx_Xlib_Release_5_Or_Later")
(import-lambda-definition xlib-release-6-or-later? ()
"scx_Xlib_Release_6_Or_Later")
; Get the user-default values of a specified program
(define (get-default dpy program option)
(%get-default (display-Xdisplay dpy)
(str-or-sym->str program)
(str-or-sym->str option)))
(import-lambda-definition %get-default (Xdisplay program option)
"scx_Get_Default")
; ---
(define (resource-manager-string dpy)
(%resource-manager-string (display-Xdisplay dpy)))
(import-lambda-definition %resource-manager-string (Xdisplay)
"scx_Resource_Manager_String")
; ---
(define (parse-geometry string)
(reverse (%parse-geometry string)))
(import-lambda-definition %parse-geometry (string)
"scx_Parse_Geometry")
; ---
(define (store-buffer) #f)
(define (store-bytes) #f)
(define (fetch-buffer) #f)
(define (fetch-bytes) #f)
(define (rotate-buffers) #f)
(let ((xa-string (make-atom 31)) ; (31 is XA_STRING)
(xa-cut-buffers
(vector (make-atom 9) (make-atom 10) (make-atom 11)
(make-atom 12) (make-atom 13) (make-atom 14)
(make-atom 15) (make-atom 16))))
;(9...16 are XA_CUT_BUFFER0...XA_CUT_BUFFER7)
(set! store-buffer (lambda (dpy bytes buf)
(if (<= 0 buf 7)
(change-property
(display-default-root-window dpy)
(vector-ref xa-cut-buffers buf)
xa-string
8
'replace
bytes))))
(set! store-bytes (lambda (dpy bytes)
(store-buffer dpy bytes 0)))
(set! fetch-buffer (lambda (dpy buf)
(if (<= 0 buf 7)
(receive
(type format data bytes-left)
(apply values
(get-property
(display-root-window dpy)
(vector-ref xa-cut-buffers buf)
xa-string
0
100000
#f))
(if (and (eq? type xa-string)
(< format 32))
data
""))
"")))
(set! fetch-bytes (lambda (dpy)
(fetch-buffer dpy 0)))
(set! rotate-buffers (lambda (dpy delta)
(rotate-properties (display-default-root-window dpy)
xa-cut-buffers delta))))