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;;; cl-typesetting copyright 2003-2004 Marc Battyani see license.txt for the details
;;; You can reach me at marc.battyani@fractalconcept.com or marc@battyani.net
;;; The homepage of cl-typesetting is here: http://www.fractalconcept.com/asp/html/cl-typesetting.html
(in-package typeset)
(defclass box ()
((dx :accessor dx :initform 0 :initarg :dx)
(dy :accessor dy :initform 0 :initarg :dy)
(baseline :accessor baseline :initform 0 :initarg :baseline)
(offset :accessor offset :initform *offset* :initarg :offset)
))
(defmethod dx (box)
0)
(defmethod (setf dx) (value box)
value)
(defmethod dy (box)
0)
(defmethod (setf dy) (value box)
value)
(defmethod baseline (box)
0)
(defmethod (setf baseline) (value box)
value)
(defmethod offset (box)
0)
(defmethod (setf offset) (value box)
value)
(defclass h-mode-mixin ()
())
(defclass v-mode-mixin ()
())
(defmethod delta-size (obj)
0)
(defmethod max-expansion (obj)
0)
(defmethod expansibility (obj)
0)
(defmethod max-compression (obj)
0)
(defmethod compressibility (obj)
0)
(defclass soft-box (box)
((delta-size :accessor delta-size :initform 0)
(max-expansion :accessor max-expansion :initform 0 :initarg :max-expansion)
(expansibility :accessor expansibility :initform 0 :initarg :expansibility)
(max-compression :accessor max-compression :initform 0 :initarg :max-compression)
(compressibility :accessor compressibility :initform 0 :initarg :compressibility)
(locked :accessor locked :initform nil :initarg :locked)))
(defmethod locked (box)
t)
(defmethod (setf locked) (value box)
value)
(defclass container-box (soft-box)
((boxes :accessor boxes :initform nil :initarg :boxes)
(adjustable-p :accessor adjustable-p :initform nil :initarg :adjustable-p)
(internal-baseline :accessor internal-baseline :initform 0)))
(defclass vbox (container-box h-mode-mixin)
())
(defclass hbox (container-box v-mode-mixin)
())
(defclass glue (soft-box)
())
(defclass hglue (glue h-mode-mixin)
())
(defclass vglue (glue v-mode-mixin)
())
(defclass spacing (soft-box) ;; non trimmable white space
())
(defclass h-spacing (spacing h-mode-mixin)
())
(defclass v-spacing (spacing v-mode-mixin)
())
(defclass char-box (box h-mode-mixin)
((boxed-char :accessor boxed-char :initform nil :initarg :boxed-char)))
(defclass white-char-box (hglue)
((trimmable-p :accessor trimmable-p :initform nil :initarg :trimmable-p)))
(defmethod soft-box-p (box)
nil)
(defmethod soft-box-p ((box soft-box))
t)
(defmethod char-box-p (box)
nil)
(defmethod char-box-p ((box char-box))
t)
(defmethod white-char-box-p (box)
nil)
(defmethod white-char-box-p ((box white-char-box))
t)
(defmethod trimmable-p (box)
nil)
(defmethod trimmable-p ((box glue))
t)
(defmethod white-space-p (box)
nil)
(defmethod white-space-p ((box glue))
t)
(defmethod white-space-p ((box spacing))
t)
(defmethod hmode-p (box)
nil)
(defmethod hmode-p ((box h-mode-mixin))
t)
(defmethod vmode-p (box)
nil)
(defmethod vmode-p ((box v-mode-mixin))
t)
(defmethod adjust-box-dx (box dx baseline)
nil)
(defmethod adjust-box-dx ((box hbox) dx baseline)
(when (adjustable-p box)
(setf (dx box) dx
(baseline box) baseline)))
(defmethod adjust-box-dy ((box vbox) dy baseline)
(when (adjustable-p box)
(setf (dy box) dy
(baseline box) baseline)))
(defmethod adjust-box-dy (box dy baseline)
nil)
(defgeneric v-split (box dx dy)
;;; Split a v-mode box vertically into two parts
;; Args: dx - area width, dy - area height
;; Values: box-fitted, box-left, dy-left
(:method ((box v-mode-mixin) dx dy)
(declare (ignore dx))
(if (> (dy box) dy)
(values nil box dy)
(values box nil (- dy (dy box))))))
(defgeneric boxes-left (content))
(defgeneric (setf boxes-left) (value content)
(:method (value content) ; Do nothing if has already been adjusted by v-split.
(declare (ignore content))
value))
(defmethod print-object ((self char-box) stream)
(print-unreadable-object (self stream :type t)
(prin1 (boxed-char self) stream)))
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