;; Common Lisp bindings for GTK+ v2.0
;; Copyright (C) 1999-2004 Espen S. Johnsen <espen@users.sf.net>
;;
;; This library is free software; you can redistribute it and/or
;; modify it under the terms of the GNU Lesser General Public
;; License as published by the Free Software Foundation; either
;; version 2 of the License, or (at your option) any later version.
;;
;; This library is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
;; Lesser General Public License for more details.
;;
;; You should have received a copy of the GNU Lesser General Public
;; License along with this library; if not, write to the Free Software
;; Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

;; $Id: gtkstyle.lisp,v 1.1 2004-12-20 00:48:57 espen Exp $

(in-package "GTK")


;;; Styles

(eval-when (:compile-toplevel :load-toplevel :execute)
  (defbinding %style-font-desc-offset () int))

(defclass style (gobject)
  ((fg 
    :allocation :virtual
    :getter style-fg
    :setter (setf style-fg)
    :initarg :fg)
   (bg 
    :allocation :virtual
    :getter style-bg
    :setter (setf style-bg)
    :initarg :bg)
   (light
    :allocation :virtual
    :getter style-light
    :setter (setf style-light)
    :initarg :light)
   (dark
    :allocation :virtual
    :getter style-dark
    :setter (setf style-dark)
    :initarg :dark)
   (mid
    :allocation :virtual
    :getter style-mid
    :setter (setf style-mid)
    :initarg :mid)
   (text
    :allocation :virtual
    :getter style-text
    :setter (setf style-text)
    :initarg :text)
   (base
    :allocation :virtual
    :getter style-base
    :setter (setf style-base)
    :initarg :base)
   (text-aa
    :allocation :virtual
    :getter style-text-aa
    :setter (setf style-text-aa)
    :initarg :text-aa)
   (black
    :allocation :virtual
    :getter style-black
    :setter (setf style-black)
    :initarg :black)
   (white
    :allocation :virtual
    :getter style-white
    :setter (setf style-white)
    :initarg :white)

   (font-desc 
    :offset #.(%style-font-desc-offset)
    :allocation :alien 
    :accessor style-font-desc
    :initarg :font-desc
    :type pango:font-description)
   (xthickness 
    :allocation :alien 
    :accessor style-xthickness
    :initarg :xthickness
    :type int)
   (ythickness
    :allocation :alien 
    :accessor style-ythickness
    :initarg :ythickness
    :type int)

   (fg-gc
    :allocation :virtual
    :getter style-fg-gc)
   (bg-gc
    :allocation :virtual
    :getter style-bg-gc)
   (light-gc
    :allocation :virtual
    :getter style-light-gc)
   (dark-gc
    :allocation :virtual
    :getter style-dark-gc)
   (mid-gc
    :allocation :virtual
    :getter style-mid-gc)
   (text-gc
    :allocation :virtual
    :getter style-text-gc)
   (base-gc
    :allocation :virtual
    :getter style-base-gc)
   (text-aa-gc
    :allocation :virtual
    :getter style-text-aa-gc)
   (black-gc
    :allocation :virtual
    :getter style-black-gc)
   (white-gc
    :allocation :virtual
    :getter style-white-gc))
  (:metaclass gobject-class))


(defbinding style-copy () style
  (style style))

(defbinding style-attach () style
  (style style)
  (window window))

(defbinding style-detach () style
  (style style))


(deftype color-type () 
  '(enum :fg :bg :light :dark :mid :text :base :text-aa :white :black))

(defbinding %style-get-color () (copy-of gdk:color)
  (style style)
  (color-type color-type)
  (state state-type))

(defbinding %style-set-color () nil
  (style style)
  (color-type color-type)
  (state state-type)
  (color gdk:color))

(defbinding %style-get-gc () gdk:gc
  (style style)
  (color-type color-type)
  (state state-type))

(defun %style-get-color-vector (style color-type)
  (loop
   with states = (enum-mapping 'state-type)
   with vector = (make-array (length states))
   for (symbol index) in states
   do (setf (svref vector index) (%style-get-color style color-type symbol))
   finally (return vector)))

(defun %style-set-color-vector (style color-type vector)
  (loop
   for (symbol index) in (enum-mapping 'state-type)
   do (%style-set-color style color-type symbol (svref vector index))))

(defun %style-get-gc-vector (style color-type)
  (loop
   with states = (enum-mapping 'state-type)
   with vector = (make-array (length states))
   for (symbol index) in states
   do (setf (svref vector index) (%style-get-gc style color-type symbol))
   finally (return vector)))

(defmacro define-style-color-accessor (name type)
  `(progn
     (defun ,name (style &optional state)
       (if state
	   (%style-get-color style ,type state)
	 (%style-get-color-vector style ,type)))
     (defun (setf ,name) (color style &optional state)
       (if state
	   (%style-set-color style ,type state color)
	 (%style-set-color-vector style ,type color)))))

(define-style-color-accessor style-fg :fg)
(define-style-color-accessor style-bg :bg)
(define-style-color-accessor style-light :light)
(define-style-color-accessor style-dark :dark)
(define-style-color-accessor style-mid :mid)
(define-style-color-accessor style-text :text)
(define-style-color-accessor style-base :base)
(define-style-color-accessor style-text-aa :text-aa)

(defun style-black (style)
  (%style-get-color style :black :normal))

(defun style-white (style)
  (%style-get-color style :black :normal))

(defmacro define-style-gc-reader (name type)
  `(defun ,name (style &optional state)
     (if state
	 (%style-get-gc style ,type state)
       (%style-get-gc-vector style ,type))))

(define-style-gc-reader style-fg-gc :fg)
(define-style-gc-reader style-bg-gc :bg)
(define-style-gc-reader style-light-gc :light)
(define-style-gc-reader style-dark-gc :dark)
(define-style-gc-reader style-mid-gc :mid)
(define-style-gc-reader style-text-gc :text)
(define-style-gc-reader style-base-gc :base)
(define-style-gc-reader style-text-aa-gc :text-aa)

(defun style-black-gc (style)
  (%style-get-gc style :black :normal))

(defun style-white-gc (style)
  (%style-get-gc style :white :normal))