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Diffstat (limited to '')
| -rw-r--r-- | plug-ins/script-fu/scripts/palette-export.scm | 402 |
1 files changed, 402 insertions, 0 deletions
diff --git a/plug-ins/script-fu/scripts/palette-export.scm b/plug-ins/script-fu/scripts/palette-export.scm new file mode 100644 index 0000000..ecb16df --- /dev/null +++ b/plug-ins/script-fu/scripts/palette-export.scm @@ -0,0 +1,402 @@ +; ----------------------------------------------------------------------------- +; GIMP palette export toolkit - +; Written by Barak Itkin <lightningismyname@gmail.com> +; +; This script includes various exporters for GIMP palettes, and other +; utility function to help in exporting to other (text-based) formats. +; See instruction on adding new exporters at the end +; +; ----------------------------------------------------------------------------- +; Numbers and Math +; ----------------------------------------------------------------------------- + +; For all the operations below, this is the order of respectable digits: +(define conversion-digits (list "0" "1" "2" "3" "4" "5" "6" "7" "8" "9" + "a" "b" "c" "d" "e" "f" "g" "h" "i" "j" "k" + "l" "m" "n" "o" "p" "q" "r" "s" "t" "u" "v" + "w" "x" "y" "z")) + +; Converts a decimal number to another base. The returned number is a string +(define (convert-decimal-to-base num base) + (if (< num base) + (list-ref conversion-digits num) + (let loop ((val num) + (order (inexact->exact (truncate (/ (log num) + (log base))))) + (result "")) + (let* ((power (expt base order)) + (digit (quotient val power))) + (if (zero? order) + (string-append result (list-ref conversion-digits digit)) + (loop (- val (* digit power)) + (pred order) + (string-append result (list-ref conversion-digits digit)))))))) + +; Convert a string representation of a number in some base, to a decimal number +(define (convert-base-to-decimal base num-str) + (define (convert-char num-char) + (if (char-numeric? num-char) + (string->number (string num-char)) + (+ 10 (- (char->integer num-char) (char->integer #\a))) + ) + ) + (define (calc base num-str num) + (if (equal? num-str "") + num + (calc base + (substring num-str 1) + (+ (* num base) (convert-char (string-ref num-str 0))) + ) + ) + ) + (calc base num-str 0) + ) + +; If a string num-str is shorter then size, pad it with pad-str in the +; beginning until it's at least size long +(define (pre-pad-number num-str size pad-str) + (if (< (string-length num-str) size) + (pre-pad-number (string-append pad-str num-str) size pad-str) + num-str + ) + ) + +; ----------------------------------------------------------------------------- +; Color convertors +; ----------------------------------------------------------------------------- + +; The standard way for representing a color would be a list of red +; green and blue (GIMP's default) +(define color-get-red car) +(define color-get-green cadr) +(define color-get-blue caddr) + +; Convert a color to a hexadecimal string +; '(255 255 255) => "#ffffff" + +(define (color-rgb-to-hexa-decimal color) + (string-append "#" + (pre-pad-number + (convert-decimal-to-base (color-get-red color) 16) 2 "0") + (pre-pad-number + (convert-decimal-to-base (color-get-green color) 16) 2 "0") + (pre-pad-number + (convert-decimal-to-base (color-get-blue color) 16) 2 "0") + ) + ) + +; Convert a color to a css color +; '(255 255 255) => "rgb(255, 255, 255)" +(define (color-rgb-to-css color) + (string-append "rgb(" (number->string (color-get-red color)) + ", " (number->string (color-get-green color)) + ", " (number->string (color-get-blue color)) ")") + ) + +; Convert a color to a simple pair of braces with comma separated values +; '(255 255 255) => "(255, 255, 255)" +(define (color-rgb-to-comma-seperated-list color) + (string-append "(" (number->string (color-get-red color)) + ", " (number->string (color-get-green color)) + ", " (number->string (color-get-blue color)) ")") + ) + + +; ----------------------------------------------------------------------------- +; Export utils +; ----------------------------------------------------------------------------- + +; List of characters that should not appear in file names +(define illegal-file-name-chars (list #\\ #\/ #\: #\* #\? #\" #\< #\> #\|)) + +; A function to filter a list lst by a given predicate pred +(define (filter pred lst) + (if (null? lst) + '() + (if (pred (car lst)) + (cons (car lst) (filter pred (cdr lst))) + (filter pred (cdr lst)) + ) + ) + ) + +; A function to check if a certain value obj is inside a list lst +(define (contained? obj lst) (member obj lst)) + +; This functions filters a string to have only characters which are +; either alpha-numeric or contained in more-legal (which is a variable +; holding a list of characters) +(define (clean str more-legal) + (list->string (filter (lambda (ch) (or (char-alphabetic? ch) + (char-numeric? ch) + (contained? ch more-legal))) + (string->list str))) + ) + +; A function that receives the a file-name, and filters out all the +; character that shouldn't appear in file names. Then, it makes sure +; the remaining name isn't only white-spaces. If it's only +; white-spaces, the function returns false. Otherwise, it returns the +; fixed file-name +(define (valid-file-name name) + (let* ((clean (list->string (filter (lambda (ch) + (not (contained? + ch illegal-file-name-chars))) + (string->list name)))) + (clean-without-spaces (list->string (filter (lambda (ch) + (not (char-whitespace? + ch))) + (string->list clean)))) + ) + (if (equal? clean-without-spaces "") + #f + clean + ) + ) + ) + +; Filters a string from all the characters which are not alpha-numeric +; (this also removes whitespaces) +(define (name-alpha-numeric str) + (clean str '()) + ) + +; This function does the same as name-alpha-numeric, with an added +; operation - it removes any numbers from the beginning +(define (name-standard str) + (let ((cleaned (clean str '()))) + (while (char-numeric? (string-ref cleaned 0)) + (set! cleaned (substring cleaned 1)) + ) + cleaned + ) + ) + +(define name-no-conversion (lambda (obj) obj)) +(define color-none (lambda (x) "")) +(define name-none (lambda (x) "")) + +(define displayln (lambda (obj) (display obj) (display "\n"))) + +; The loop for exporting all the colors +(define (export-palette palette-name color-convertor name-convertor + start name-pre name-after name-color-seperator + color-pre color-after entry-seperator end) + + (define (write-color-line index) + (display name-pre) + (display (name-convertor + (car (gimp-palette-entry-get-name palette-name index)))) + (display name-after) + (display name-color-seperator) + (display color-pre) + (display (color-convertor + (car (gimp-palette-entry-get-color palette-name index)))) + (display color-after) + ) + + (let ((color-count (car (gimp-palette-get-colors palette-name))) + (i 0) + ) + + (display start) + + (while (< i (- color-count 1)) + (begin + (write-color-line i) + (display entry-seperator) + (set! i (+ 1 i)) + ) + ) + + (write-color-line i) + (display end) + ) + ) + +(define (register-palette-exporter + export-type export-name file-type description author copyright date) + (script-fu-register (string-append "gimp-palette-export-" export-type) + export-name + description + author + copyright + date + "" + SF-DIRNAME _"Folder for the output file" "" + SF-STRING _"The name of the file to create (if a file with this name already exist, it will be replaced)" + (string-append "palette." file-type) + ) + (script-fu-menu-register (string-append "gimp-palette-export-" export-type) + "<Palettes>/Export as") + ) + +(define (bad-file-name) + (gimp-message (string-append _"The filename you entered is not a suitable name for a file." + "\n\n" + _"All characters in the name are either white-spaces or characters which can not appear in filenames."))) + +; ----------------------------------------------------------------------------- +; Exporters +; ----------------------------------------------------------------------------- + +(define (gimp-palette-export-css directory-name file-name) + (let ((valid-name (valid-file-name file-name))) + (if valid-name + (with-output-to-file (string-append + directory-name DIR-SEPARATOR file-name) + (lambda () (export-palette (car (gimp-context-get-palette)) + color-rgb-to-css + name-alpha-numeric ; name-convertor + "/* Generated with GIMP Palette Export */\n" ; start + "." ; name-pre + "" ; name-after + " { " ; name-color-seperator + "color: " ; color-pre + " }" ; color-after + "\n" ; entry-seperator + "" ; end + ))) + (bad-file-name) + ) + ) + ) +(register-palette-exporter "css" "_CSS stylesheet..." "css" + (string-append _"Export the active palette as a CSS stylesheet with the color entry name as their class name, and the color itself as the color attribute") + "Barak Itkin <lightningismyname@gmail.com>" + "Barak Itkin" "May 15th, 2009") + +(define (gimp-palette-export-php directory-name file-name) + (let ((valid-name (valid-file-name file-name))) + (if valid-name + (with-output-to-file (string-append + directory-name DIR-SEPARATOR file-name) + (lambda () (export-palette (car (gimp-context-get-palette)) + color-rgb-to-hexa-decimal + name-standard ; name-convertor + "<?php\n/* Generated with GIMP Palette Export */\n$colors={\n" ; start + "'" ; name-pre + "'" ; name-after + " => " ; name-color-seperator + "'" ; color-pre + "'" ; color-after + ",\n" ; entry-seperator + "}\n?>" ; end + ))) + (bad-file-name) + ) + ) + ) +(register-palette-exporter "php" "P_HP dictionary..." "php" + _"Export the active palette as a PHP dictionary (name => color)" + "Barak Itkin <lightningismyname@gmail.com>" + "Barak Itkin" "May 15th, 2009") + +(define (gimp-palette-export-python directory-name file-name) + (let ((valid-name (valid-file-name file-name))) + (if valid-name + (with-output-to-file (string-append + directory-name DIR-SEPARATOR file-name) + (lambda () + (let ((palette-name (car (gimp-context-get-palette)))) + (begin (displayln "# Generated with GIMP Palette Export") + (displayln (string-append + "# Based on the palette " palette-name)) + (export-palette palette-name + color-rgb-to-hexa-decimal + name-standard ; name-convertor + "colors={\n" ; start + "'" ; name-pre + "'" ; name-after + ": " ; name-color-seperator + "'" ; color-pre + "'" ; color-after + ",\n" ; entry-seperator + "}" ; end + )))) + ) + (bad-file-name) + ) + ) + ) +(register-palette-exporter "python" "_Python dictionary" "py" + _"Export the active palette as a Python dictionary (name: color)" + "Barak Itkin <lightningismyname@gmail.com>" + "Barak Itkin" "May 15th, 2009") + +(define (gimp-palette-export-text directory-name file-name) + (let ((valid-name (valid-file-name file-name))) + (if valid-name + (with-output-to-file (string-append + directory-name DIR-SEPARATOR file-name) + (lambda () + (export-palette (car (gimp-context-get-palette)) + color-rgb-to-hexa-decimal + name-none ; name-convertor + "" ; start + "" ; name-pre + "" ; name-after + "" ; name-color-seperator + "" ; color-pre + "" ; color-after + "\n" ; entry-seperator + "" ; end + ) + ) + ) + (bad-file-name) + ) + ) + ) +(register-palette-exporter "text" "_Text file..." "txt" + _"Write all the colors in a palette to a text file, one hexadecimal value per line (no names)" + "Barak Itkin <lightningismyname@gmail.com>" + "Barak Itkin" "May 15th, 2009") + +(define (gimp-palette-export-java directory-name file-name) + (let ((valid-name (valid-file-name file-name))) + (if valid-name + (with-output-to-file (string-append directory-name + DIR-SEPARATOR file-name) + (lambda () + (let ((palette-name (car (gimp-context-get-palette)))) + (begin (displayln "") + (displayln "import java.awt.Color;") + (displayln "import java.util.Hashtable;") + (displayln "") + (displayln "// Generated with GIMP palette Export ") + (displayln (string-append + "// Based on the palette " palette-name)) + (displayln (string-append + "public class " + (name-standard palette-name) " {")) + (displayln "") + (displayln " Hashtable<String, Color> colors;") + (displayln "") + (displayln (string-append + " public " + (name-standard palette-name) "() {")) + (export-palette (car (gimp-context-get-palette)) + color-rgb-to-comma-seperated-list + name-no-conversion + " colors = new Hashtable<String,Color>();\n" ; start + " colors.put(\"" ; name-pre + "\"" ; name-after + ", " ; name-color-seperator + "new Color" ; color-pre + ");" ; color-after + "\n" ; entry-seperator + "\n }" ; end + ) + (display "\n}")))) + ) + (bad-file-name) + ) + ) + ) + +(register-palette-exporter "java" "J_ava map..." "java" + _"Export the active palette as a java.util.Hashtable<String, Color>" + "Barak Itkin <lightningismyname@gmail.com>" + "Barak Itkin" "May 15th, 2009") + |