scx/scheme/xlib/cursor.scm

67 lines
2.3 KiB
Scheme

;; create-pixmap-cursor returns a cursor, that was build using the
;; pixmaps src and mask, and the colors foreground and background. x
;; and y specify the hotspot of the cursor. See XCreatePixmapCursor.
(define (create-pixmap-cursor src mask x y foreground background)
(let ((display (pixmap-display src)))
(make-cursor (%create-pixmap-cursor (display-Xdisplay display)
(pixmap-Xpixmap src)
(pixmap-Xpixmap mask)
x y
(color-Xcolor foreground)
(color-Xcolor background))
display
#t)))
(define create-cursor create-pixmap-cursor) ;; for compatibility with elk
(import-lambda-definition %create-pixmap-cursor (Xdisplay src mask x y f b)
"scx_Create_Pixmap_Cursor")
;; create-glyph-cursor returns a cursor, that was build using the font
;; src, an integer src-char, a font mask, an integer mask-char, and
;; the colors foreground and background. See XCreateGlyphCursor.
(define (create-glyph-cursor src src-char mask mask-char foreground background)
(let ((display (font-display src)))
(make-cursor (%create-glyph-cursor (display-Xdisplay display)
(font-Xfont src)
src-char
(font-Xfont mask)
mask-char
(color-Xcolor foreground)
(color-Xcolor background))
display
#t)))
(import-lambda-definition %create-glyph-cursor
(Xdisplay src srcc mask maskc f b)
"scx_Create_Glyph_Cursor")
;; create-font-cursor returns a cursor, that was build with
;; create-glyph-cursor using a font named "cursor", src-char, the
;; character following src-char as mask-char, and black and as
;; foreground and background.
(define (create-font-cursor display src-char)
(let ((font (load-font display "cursor")))
(create-glyph-cursor font src-char
font (+ 1 src-char)
(create-color 0 0 0)
(create-color 65535 65535 65535))
;; elk protects that with unwind-protect, and calls unload-font to free
;; the font, but we free it anyway on garbage-collection...(??)
;;(unload-font font)
))
;; recolor-cursor resets the colors of an existing cursor. See XRecolorCursor.
(define (recolor-cursor cursor foreground background)
(%recolor-cursor (display-Xdisplay (cursor-display cursor))
(cursor-Xcursor cursor)
foreground background))
(import-lambda-definition %recolor-cursor (Xdisplay Xcursor f b)
"scx_Recolor_Cursor")