/usr/share/common-lisp/source/mcclim/Apps/Scigraph/scigraph/color.lisp is in cl-mcclim 0.9.6.dfsg.cvs20100315-2.
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#|
Copyright (c) 1987-1993 by BBN Systems and Technologies,
A Division of Bolt, Beranek and Newman Inc.
All rights reserved.
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|#
(in-package :graph)
;;;
;;; A feeble color naming facility. These names represent a selection
;;; of about 30 of the more than 700 names defined by X11. We don't want
;;; too many colors, because menus should be short and because there are limits to
;;; how many colors X Windows will let you use.
;;;
(defvar *color-specifications*
'(;; Primary colors.
(:Green 0.0 1.0 0.0)
;;(:Blue 0.0 0.0 1.0)
(:Magenta 1.0 0.0 1.0)
(:Cyan 0.0 1.0 1.0)
;;(:Yellow 1.0 1.0 0.0)
(:Red 1.0 0.0 0.0)
;; Earth Tones
(:gold 1.0 .843 0.0)
(:goldenrod .855 .647 .125)
(:khaki .941 .902 .549)
(:olivedrab .420 .557 .137)
(:dark-khaki .741 .718 .420)
(:peachpuff 1.0 .855 .725)
(:sienna 0.627 0.322 0.176)
(:orange 1.0 0.647 0.0)
;; (:maroon 0.690 0.188 0.376)
(:firebrick 0.698 0.133 0.133)
(:salmon 0.980 0.502 0.447)
(:aquamarine 0.498 1.0 0.831)
;; (:dark-green 0.0 0.392 0.0)
;; (:green-yellow 0.678 1.0 0.184)
(:pink 1.000 0.753 0.796)
;; (:orchid .855 .439 .839)
(:violet-red 0.816 0.125 0.565)
(:violet 0.933 0.510 0.933)
;; Grays (chosen to make sense in 8-bit color)
;;(:dark-slate-gray 0.184 0.31 0.31)
(:Black 0.0 0.0 0.0)
(:gray25 0.25 0.25 0.25)
(:gray50 0.500 0.500 0.500)
(:gray75 0.75 0.75 0.75)
(:White 1.0 1.0 1.0)
;; Blues
(:royal-blue .255 .412 .882)
(:sky-blue 0.529 0.808 0.922)
(:steel-blue 0.275 0.510 0.706)
(:light-blue 0.678 0.847 0.902)
;; (:navy-blue 0.0 0.0 0.502)
(:dark-turquoise 0.0 0.808 0.820)
(:turquoise 0.251 0.878 0.816)
;; (:indian-red 0.804 0.361 0.361)
)
"List of (color-name red green blue) for each color a user
can choose from for drawing graphs.")
(defvar *colors* nil "Used for pop-edit.")
(let ((colors (make-hash-table)))
(defun ALU-FOR-COLOR (color-name)
"Translate a color name to an ink/alu"
(or *colors* (initialize-color-system))
(or (gethash color-name colors nil)
(gethash :white colors nil)))
(defun MAKE-COLOR-CHOICES (color-specifications &optional reinitialize)
"Makes an Alist of colors to choose from."
(if reinitialize (setq colors (make-hash-table)))
(cond ((color-exists-p)
(loop for (name red green blue) in color-specifications
do
(setf (gethash name colors) (make-color-rgb red green blue))
(pushnew (list (string-capitalize name) :value name)
*colors*
:test #'equal)))
#+genera
(t
(pushnew (list "White" tv:alu-ior) *colors*)
(pushnew (list "Black" tv:alu-andca) *colors*)
(setf (gethash :white colors) tv:alu-ior)
(setf (gethash :black colors) tv:alu-andca)))))
(defun initialize-color-system ()
"Initialize the color screen if available."
;; Called by ALU-FOR-COLOR the first time an alu is needed.
#-clim (declare (special color:color-screen))
#+genera
(when (color:color-exists-p)
(or color:color-screen
;; Funcalls avoid compiler complaint when color system not
;; loaded at compile time.
(funcall 'color:create-color-screen))
(scl:send color:color-screen :standardize-color-map))
(make-color-choices *color-specifications*))
(defun alu-for-stream (stream color-name)
"Translate a color name to an ink/alu"
(if (color-stream-p stream)
(alu-for-color color-name)
#+clim (if (eq color-name :black) %erase %draw)
#-clim (if (eq color-name :black) tv:alu-andca tv:alu-ior)))
(defun draw-color-swatch (stream color-name pretty-name selected-p &optional size)
"Draw a sample of the given color at the current cursor position."
(declare (ignore pretty-name))
(or size (setq size (stream-line-height stream)))
(let ((rad (1- (values (truncate size 2)))))
(multiple-value-bind (x y) (stream-cursor-position* stream)
(draw-circle (+ x rad 1) (+ y rad 1) rad
:filled t
:stream stream :alu (alu-for-stream stream color-name))
(draw-rectangle x (+ x size -1) y (+ y size -1)
:stream stream :filled nil :alu (if selected-p %draw %erase)))))
(defun display-colors (&optional
(stream *standard-output*)
(colors *colors*))
"Display the current colors and their names."
(dolist (color-name colors)
(setq color-name (third color-name))
(terpri stream)
(draw-color-swatch stream color-name nil nil)
(stream-increment-cursor-position* stream 15 0)
(format stream " ~A " color-name)))
(defun display-gray-wash (&optional
(stream *standard-output*)
(quantum (/ 1.0 200)))
"Display the range of gray scales."
;; Useful on 8-bit color systems to see what resolution there really is.
(window-clear stream)
(multiple-value-bind (left top right bottom) (stream-viewport stream)
(let* ((intensity 0.0)
(width (- right left))
(height (- bottom top))
(increment 0.0))
(setq left (+ left (* .1 width))
increment (* .8 quantum width)
right (+ left increment)
top (+ top (* .1 height))
bottom (- bottom (* .1 height)))
(loop
(if (> intensity 1.0) (return))
(let ((gray (make-color-rgb intensity intensity intensity)))
(draw-rectangle left right bottom top :stream stream :alu gray :filled t)
(setq left right right (+ right increment))
(incf intensity quantum))))))
#-clim-2
(define-presentation-type color-presentation ()
:description "a color"
:parser ((stream)
(completing-from-suggestions (stream)
(dolist (color *colors*)
(suggest (first color) (third color)))))
:printer ((object stream)
;; Present the textual name, rather than a swatch of color.
(write-string (string object) stream))
:accept-values-displayer
((stream object query-identifier)
(accept-values-choose-from-sequence
stream *colors* object query-identifier
:drawer
#'(lambda (stream object name selected-p)
(draw-color-swatch stream object name selected-p)))))
#+clim-2
(clim:define-presentation-type-abbreviation color-presentation ()
;; Can't simply call this 'color' because that already names a class.
`((member ,@(mapcar #'third *colors*))
:name-key string-capitalize
:printer present-color
:highlighter highlight-color))
#+clim-2
(defun present-color (object stream &key acceptably)
(declare (ignore acceptably))
(with-room-for-graphics (stream)
(draw-color-swatch stream object
(string object)
nil)))
#+clim-2
(defun highlight-color (continuation object stream)
(clim:surrounding-output-with-border
(stream)
(funcall continuation object stream)))
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