472 lines
14 KiB
EmacsLisp
472 lines
14 KiB
EmacsLisp
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;;; css-palette.el
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(defconst css-palette:version "0.02")
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;; Copyright (C) 2008 Niels Giesen
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;; Author: Niels Giesen <nielsforkgiesen@gmailspooncom, but please
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;; replace the kitchen utensils with a dot before hitting "Send">
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;; Keywords: processes, css, multimedia, extensions, tools
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;; Homepage: http://niels.kicks-ass.org/
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;; This program is free software: you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
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;; (at your option) any later version.
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;; This program is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with this program. If not, see <http://www.gnu.org/licenses/>.
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;;; Commentary:
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;; css-palette defines commands to have "palettes" inside a block
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;; comment to circumvent the absence of (color or other) variable
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;; definitions in the CSS specification. It can import and export GIMP
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;; color palettes. See the documentation of `css-palette-mode'
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;; for details of usage.
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;;; Installation:
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;; Something like:
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;; put it in your load-path.
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;; (autoload 'css-palette-mode "css-palette" "" t)
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;; (add-hook 'css-mode-hook
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;; (lambda ()
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;; (css-palette-mode t)))
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;; Notes:
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;; css-palette depends on css-color.el to do font-locking.
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;; ccs-palette is orthogonal to css-mode, so it could probably be used
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;; inside other language modes, provided they support multiline block
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;; comments.
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;;; Change log:
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;; 2009-01-11 Lennart Borgman
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;; - Minor code clean up.
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;;; Code:
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(require 'css-color)
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(eval-when-compile (require 'cl)) ;i'm a bad bad boy...
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(defconst css-palette-hex-chars "0123456789abcdefABCDEF"
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"Composing chars in hexadecimal notation, save for the hash (#) sign.")
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(defvar css-palette-mode-map
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(let ((m (make-sparse-keymap)))
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(define-key m "\C-c\C-c" 'css-palette-update-all)
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(define-key m "\C-c\C-i" 'css-palette-insert-reference)
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(define-key m "\C-c\C-p" 'css-palette-import-from-GIMP)
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(define-key m "\C-c\C-f" 'css-palette-insert-files)
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m)
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"Mode map for `css-palette-mode'")
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;;;###autoload
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(define-minor-mode css-palette-mode
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"Minor mode for palettes in CSS.
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The mode `css-palette-mode' acts on the first COLORS declaration in your
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file of the form:
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COLORS:
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\(
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c0 \"#6f5d25\" ;tainted sand
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c1 \"#000000\" ;Black
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c2 \"#cca42b\" ;goldenslumber
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c3 \"#6889cb\" ;far off sky
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c4 \"#fff\" ;strange aeons
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)
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Such declarations should appear inside a block comment, in order
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to be parsed properly by the LISP reader.
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Type \\[css-palette-update-all], and any occurence of
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color: #f55; /*[c3]*/
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will be updated with
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color: #6899cb; /*[c3]*/
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The following commands are available to insert key-value pairs
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and palette declarations:
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\\{css-palette-mode-map}
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You can extend or redefine the types of palettes by defining a
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new palette specification of the form (PATTERN REGEXP
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REF-FOLLOWS-VALUE), named according to the naming scheme
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css-palette:my-type, where
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PATTERN is a pattern containing two (%s) format directives which
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will be filled in with the variable and its value,
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REGEXP is a regular expression to match a value - variable
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pattern,
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and REF-FOLLOWS-VALUE defined whether or not the reference comes
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after the value. This allows for more flexibility.
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Note that, although the w3c spec at URL
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`http://www.w3.org/TR/CSS2/syndata.html#comments' says that
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comments \" may occur anywhere between tokens, and their
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contents have no influence on the rendering\", Internet
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Explorer does not think so. Better keep all your comments after
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a \"statement\", as per the default. This means `css-palette'
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is ill-suited for use within shorthands.
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See variable `css-palette:colors' for an example of a palette
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type.
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The extension mechanism means that palette types can be used to
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contain arbitrary key-value mappings.
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Besides the colors palette, css-palette defines the palette
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definition variables `css-palette:colors-outside' and
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`css-palette:files', for colors with the reference outside and
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for file url()'s respectively.
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You can fine-control which palette types css-palette should look
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at via the variable `css-palette-types'.
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"
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nil
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"-palette"
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css-palette-mode-map
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(css-color-mode +1))
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;;;###autoload
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(defgroup css-palette nil
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"Customization group for css-palette library.
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See function `css-palette-mode' for documentation"
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:group 'css-color)
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(defcustom css-palette:colors
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`("%s; /*[%s]*/ "
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,(concat "\\("
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css-color-color-re
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;; (mapconcat
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;; 'identity
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;; (list css-color-hex-re
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;; css-color-hsl-re
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;; css-color-rgb-re) "\\|")
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"\\)"
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"[[:space:]]*;[[:space:]]*\/\\*\\[\\([^[:space:]]+\\)\\]\\*\/")
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t)
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"Color palette specification.
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See function `css-palette-mode' for documentation"
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:group 'css-palette
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:type '(list
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(string :tag "Pattern")
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(regexp :tag "Regexp")
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(boolean :tag "Reversed")))
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(defcustom css-palette:files
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'("url(%s); /*[%s]*/ "
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"url(\\([^)]+\\))[[:space:]]*;[[:space:]]*\/\\*\\[\\([^[:space:]]+\\)\\]\\*\/"
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t)
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"File palette specification.
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See function `css-palette-mode' for documentation"
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:group 'css-palette
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:type '(list
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(string :tag "Pattern")
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(regexp :tag "Regexp")
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(boolean :tag "Reversed")))
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(defcustom css-palette-types
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'(colors)
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"List of palette types to check for in buffer.
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See function `css-palette-mode' for documentation"
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:group 'css-palette
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:type '(repeat (symbol :tag "Palette type")))
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(make-variable-buffer-local 'css-palette-types)
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;; (defun css-palette-mode-turn-on ()
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;; "Turn on `css-palette-mode'."
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;; (css-palette-mode 1))
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;; ;;;###autoload
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;; (defcustom css-palette-mode-activate-p nil
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;; "Start `css-palette-mode' when `css-mode' is activated."
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;; :group 'css-palette
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;; :set (lambda (sym val)
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;; (set-default sym val)
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;; (if val
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;; (add-hook 'css-mode-hook 'css-palette-mode-turn-on)
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;; (remove-hook 'css-mode-hook 'css-palette-mode-turn-on)))
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;; :type 'boolean)
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(defun css-palette-turn-on-in-buffer ()
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"Turn on `css-palette-mode' in `css-mode'."
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(when (derived-mode-p 'css-mode)
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(message "turn-on-in-b:before (css-palette-mode 1) cb=%s" (current-buffer))
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(css-palette-mode 1)
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(message "turn-on-in-b:after (css-palette-mode 1)")
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))
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;;;###autoload
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(define-globalized-minor-mode css-palette-global-mode css-palette-mode
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css-palette-turn-on-in-buffer
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:group 'css-color)
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(defun css-palette-get (key spec)
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(plist-get
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(css-palette-spec-to-plist
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(symbol-value
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(intern-soft
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(format "css-palette:%s" spec)))) key))
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(defun css-palette-spec-to-plist (palette)
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(destructuring-bind (pattern regexp ref-follows-value) palette
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(list :regexp regexp
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:pattern pattern
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:ref-follows-value ref-follows-value)))
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(defun css-palette-choose-type ()
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(intern-soft
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(if (null (cdr css-palette-types))
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(car css-palette-types)
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(completing-read "Type: "
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(mapcar 'symbol-name css-palette-types)))))
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(defun css-palette-get-declaration (type)
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"Return `css-palette' declaration of TYPE in current buffer.
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If none is found, throw an error."
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(let ((type (symbol-name type)))
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(save-excursion
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(goto-char (point-min))
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(or (re-search-forward (format "%s:"
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(upcase type)) nil t)
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(error "No %s declaration found in buffer; check value of variable
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`css-palette-types'" type))
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(let ((palette (read (current-buffer))))
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;; Check (could be better..)
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(if (not (and
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(listp palette)
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(= 0 (% (length palette) 2))))
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(error "Invalid %s " type))
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palette))))
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(defun css-palette-update (type)
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"Update buffer references for palette of TYPE."
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(interactive (list
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(css-palette-choose-type)))
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(let ((palette (css-palette-get-declaration type))
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(regexp (css-palette-get :regexp type))
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(ref-follows-value (css-palette-get :ref-follows-value type)))
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(flet ((getval (key palette)
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(let ((value (plist-get palette (intern-soft key))))
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(if (null value)
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(error
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"%S not specified in %S palette "
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key
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type
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;; (signal 'css-palette-not-found-error nil)
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)
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value))))
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(save-excursion
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(goto-char (point-min))
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(while (re-search-forward
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regexp
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(point-max) t)
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(replace-match
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(getval (match-string-no-properties (if ref-follows-value 2 1)) palette)
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nil nil nil (if ref-follows-value 1 2))))))
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(css-color-mode 1))
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(defun css-palette-update-all ()
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"Update all references for palettes in `css-palette-types'"
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(interactive)
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(catch 'err
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(mapc (lambda (type)
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(condition-case err
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(css-palette-update type)
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(if (y-or-n-p (format "%s, skip? " err))
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nil)))
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css-palette-types)))
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;; Reference Insertion
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(defun css-palette-insert-reference (type)
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"Insert `css-palette' reference of TYPE at point."
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(interactive
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(list (css-palette-choose-type)))
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(let* ((palette (css-palette-get-declaration type))
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(ref-follows-value (css-palette-get :ref-follows-value type))
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(pattern (css-palette-get :pattern type))
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(var
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(completing-read (format "%s variable: "
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(capitalize
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(substring (symbol-name type)
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0 -1)))
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(loop for i on
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palette
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by 'cddr
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collect
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(css-palette-colorify
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(symbol-name (car i))
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(cadr i)))))
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(val (plist-get palette (read var))))
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(insert (apply 'format
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pattern
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(if ref-follows-value
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(list val var)
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(list var val))))
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(css-color-mode +1)))
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(defun css-palette-hex-color-p (str)
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(string-match "#\\([a-fA-F[:digit:]]\\{6\\}\\|[a-fA-F[:digit:]]\\{3\\}\\)" str))
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(defun css-palette-colorify (string color)
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(let ((color (if (css-palette-hex-color-p color)
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color
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"#000")))
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(propertize string
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'font-lock-face
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(list :background color
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:foreground (css-color-foreground-color color)
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string)
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'fontified t)))
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;; Imports
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(defun css-palette-from-existing-colors ()
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(interactive)
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(let ((palette)
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(count -1))
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(save-excursion
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(goto-char (point-min))
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(while (re-search-forward "#[[:digit:]a-fA-F]\\{6\\}\\>" nil t)
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(if (not (member (match-string-no-properties 0) palette))
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(setq palette (append (list
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(match-string-no-properties 0)
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(intern(format "c%d" (incf count))))
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palette)))
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(save-match-data (re-search-forward ";" nil t))
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(insert (format "/*[%S]*/" (cadr (member (match-string-no-properties 0) palette))))))
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(insert (format "COLORS:\n%S" (nreverse palette)))
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(forward-sexp -1)
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(forward-char 1)
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(while
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(not (looking-at ")"))
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(forward-sexp 2)
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(newline)
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(indent-for-tab-command))))
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(defun css-palette-newest-GIMP-dir ()
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"Return newest (version-wise) ~/.gimp-n.n/palettes directory on disk.
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Return `nil' if none such directory is found."
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(catch 'none
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(concat
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(or
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(car
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(last
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(directory-files "~/" t "^.gimp-[[:digit:].]\\{3,\\}")))
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(throw 'none ()))
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"/palettes/")))
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(defun css-palette-import-from-GIMP ()
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"Import GIMP palette file as a `css-palette' palette.
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GIMP palettes can be made with the GIMP or on-line tools such as
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found at URL `http://colourlovers.com'."
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(interactive)
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(let ((file (read-file-name "File: " (css-palette-newest-GIMP-dir)))
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(this-buffer (current-buffer))
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(count -1))
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(insert "\nCOLORS:\n(\n")
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(with-temp-buffer
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(insert-file-contents file)
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(goto-char (point-min))
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(while (re-search-forward
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(concat
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"^"
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"[[:space:]]*\\([[:digit:]]+\\)" ;red
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"[[:space:]]+\\([[:digit:]]+\\)" ;green
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"[[:space:]]+\\([[:digit:]]+\\)" ;blue
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"[[:space:]]+\\(.*\\)$") ;name (=> used as comment)
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nil t)
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(destructuring-bind (rb re gb ge bb be nb ne &rest ignore)
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(cddr (match-data t))
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(let ((color
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(apply 'format "c%d \"#%02x%02x%02x\" ;%s\n"
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(incf count)
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(append
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(mapcar 'string-to-number
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(list
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(buffer-substring-no-properties rb re)
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(buffer-substring-no-properties gb ge)
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(buffer-substring-no-properties bb be)))
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(list (buffer-substring-no-properties nb ne))))))
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(with-current-buffer this-buffer
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(insert color))))))
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(insert ")")
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(message "C-c C-c to update colors")))
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(defun css-palette-insert-files (dir)
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"Insert a `css-palette' declaration for all files in DIR.
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Filenames are relative.
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Main use-case: an image directory."
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(interactive "DDirectory: ")
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(save-excursion
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(let ((image-count -1))
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(insert "\nFILES:\n(\n")
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(mapc
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(lambda (f)
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(insert
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(format "file-%d %S\n"
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(incf image-count)
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(file-relative-name
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f
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(file-name-directory (buffer-file-name))))))
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(directory-files dir t "...+"))
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(insert ")\n\n"))))
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;; Exports
|
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(defun css-palette-export-to-GIMP (type name columns)
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"Export the COLORS declaration to a GIMP (.gpl) palette.
|
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|
||
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|
See also `gpl-mode' at URL
|
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|
`http://niels.kicks-ass.org/public/elisp/gpl.el'."
|
||
|
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(interactive
|
||
|
|
(list
|
||
|
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(css-palette-choose-type)
|
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(read-string "Name: ")
|
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(read-number "Number of columns: " 2)))
|
||
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(let ((palette (css-palette-get-declaration type)))
|
||
|
|
(find-file
|
||
|
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(concat (css-palette-newest-GIMP-dir)
|
||
|
|
name
|
||
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".gpl"))
|
||
|
|
(insert
|
||
|
|
(format "GIMP Palette
|
||
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Name: %s
|
||
|
|
Columns: %d
|
||
|
|
#
|
||
|
|
" name columns))
|
||
|
|
(loop for i on palette
|
||
|
|
by 'cddr
|
||
|
|
do
|
||
|
|
(multiple-value-bind (r g b)(css-color-hex-to-rgb
|
||
|
|
(css-color-hexify-anystring (cadr i)))
|
||
|
|
(insert (format "%3d %3d %3d\t%s\n"
|
||
|
|
r g b
|
||
|
|
(car i))))))
|
||
|
|
(if (featurep 'gpl)
|
||
|
|
(gpl-mode)))
|
||
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||
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(provide 'css-palette)
|
||
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;; css-palette.el ends here
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