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;;; This file is part of Cedilla.
;;; Copyright (C) 2002-2006 by Juliusz Chroboczek.
;;; This program is free software; you can redistribute it and/or modify
;;; it under the terms of the GNU General Public License as published by
;;; the Free Software Foundation; either version 2 of the License, or
;;; (at your option) any later version.
;;; This program 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 General Public License for more details.
(in-package "CEDILLA")
(defmethod ensure-instance ((glyph magic-glyph))
(ensure-instance (magic-glyph-glyph glyph)))
(defconstant *dotless-factor* 0.75)
(defconstant *dotless-metrics-factor* 0.65)
(eval-when (compile load eval)
(defconstant *enclosing-line-width* 30)
)
(defconstant *enclosing-line-12* (/ *enclosing-line-width* 2.0))
(defun make-dotless-glyph (glyph)
(%make-dotless-glyph :name nil
:width (glyph-width glyph)
:x0 (glyph-x0 glyph)
:y0 (glyph-y0 glyph)
:x1 (glyph-x1 glyph)
:y1 (* *dotless-metrics-factor* (glyph-y1 glyph))
:glyph glyph))
(defmethod typeset-glyph ((glyph dotless-glyph) out)
(let* ((g (magic-glyph-glyph glyph))
(x *current-x*)
(y *current-y*)
(x0 (- (scaled-quantity (glyph-x0 g)) 20))
(y0 (- (scaled-quantity (glyph-y0 g)) 20))
(x1 (+ (scaled-quantity (glyph-x1 g)) 20))
(y1 (* *dotless-factor* (scaled-quantity (glyph-y1 g)))))
(finish-string out)
(format out "CSV ~A ~A ~A ~A RC~%"
(+ x x0) (+ y y0) (- x1 x0) (- y1 y0))
(setf *typesetter-x* nil *typesetter-y* nil)
(typeset-glyph g out)
(finish-string out)
(format out "CR~%")))
(defun make-magic-glyph (type base glyph)
(case type
((:simplify) glyph)
((:dotless) (make-dotless-glyph glyph))
((:circle #.(code-char #x20DD)) (make-enclosed-glyph glyph "CRC" 150))
((:small-circle) (make-enclosed-glyph glyph "CRC" 300))
((:square #.(code-char #x20DE)) (make-enclosed-glyph glyph "SQR" 150))
((:small-square) (make-enclosed-glyph glyph "SQR" 0.1))
((:diamond #.(code-char #x20DF)) (make-enclosed-glyph glyph "DMND" 300))
((:screen #.(code-char #x20E2)) (make-enclosed-glyph glyph "SCRN" 200))
((:keycap #.(code-char #x20E3)) (make-enclosed-glyph glyph "KCP" 200))
((:bar) (make-barred-glyph base glyph))
((:double-v :double-h) (make-overstruck-glyph glyph glyph type))
((:small :lowercase :narrow :wide :stretch :super :sub
:mirror-h :mirror-v :rotate :rotate-right :turn)
(make-trans-glyph glyph type))
(t nil)))
(defun make-enclosed-glyph (glyph op &optional (frob 0))
(let* ((xx (- (glyph-x1 glyph) (glyph-x0 glyph)))
(dx (+ *enclosing-line-12* frob (- (glyph-x0 glyph))))
(x0 (- *enclosing-line-12*))
(x1 (+ dx xx frob *enclosing-line-width*))
(y0 (- (+ (- (glyph-y0 glyph)) frob *enclosing-line-width*)))
(y1 (+ (glyph-y1 glyph) frob *enclosing-line-width*)))
(%make-enclosed-glyph :name nil
:width (+ x1 *enclosing-line-width*)
:x0 x0 :y0 y0 :x1 x1 :y1 y1
:dx dx
:glyph glyph
:op op)))
(defmethod typeset-glyph ((glyph enclosed-glyph) out)
(let* ((g (enclosed-glyph-glyph glyph))
(x0 (+ (glyph-x0 glyph) *enclosing-line-12*))
(y0 (+ (glyph-y0 glyph) *enclosing-line-12*))
(x1 (- (glyph-x1 glyph) *enclosing-line-12*))
(y1 (- (glyph-y1 glyph) *enclosing-line-12*))
(dx (enclosed-glyph-dx glyph))
(x *current-x*) (y *current-y*))
(incf *current-x* (scaled-quantity dx))
(typeset-glyph g out)
(finish-string out)
(setf *current-line-width* (scaled-quantity *enclosing-line-width*))
(synchronise-line-width out)
(format out "~A ~A ~A ~A ~A~%"
(+ x (scaled-quantity x0))
(+ y (scaled-quantity y0))
(scaled-quantity (- x1 x0))
(scaled-quantity (- y1 y0))
(enclosed-glyph-op glyph))
(setf *current-x* (+ x (scaled-glyph-width glyph))
*current-y* y)
(setf *typesetter-x* nil *typesetter-y* nil)))
(defun make-barred-glyph (base glyph)
(let* ((x0 (glyph-x0 glyph)) (y0 (glyph-y0 glyph))
(x1 (glyph-x1 glyph)) (y1 (glyph-y1 glyph))
(y12 (/ (+ y0 y1) 2.0))
(ym (+ y12 170)) (yl (- y12 50)) (yll (- y12 200))
(xl (- x0 50)) (xl* (+ x0 100)) (xlr (+ x0 250))
(xr (+ x1 50)) (xr* (- x1 100)) (xrl (- x1 250))
bx0 by0 bx1 by1)
(case (ccs-base base)
((#\d) (setf bx0 xrl bx1 xr by0 ym by1 ym))
((#\D) (setf bx0 xl bx1 xr by0 ym by1 ym))
((#\g) (setf bx0 xrl bx1 xr by0 yll by1 yll))
((#\G) (setf bx0 xl bx1 xlr by0 y12 by1 y12))
((#\h) (setf bx0 xl bx1 xlr by0 ym by1 ym))
((#\H) (setf bx0 xl bx1 xr by0 ym by1 ym))
((#\i) (setf bx0 xl* bx1 xr* by0 yl by1 yl))
((#\I) (setf bx0 xl* bx1 xr* by0 y12 by1 y12))
((#\t) (setf bx0 xl bx1 xlr by0 yl by1 yl))
((#\T) (setf bx0 xl* bx1 xr* by0 y12 by1 y12))
((#\z) (setf bx0 xl* bx1 xr* by0 y12 by1 y12))
((#\Z) (setf bx0 xl* bx1 xr* by0 y12 by1 y12))
(t (setf bx0 xl bx1 xr by0 y12 by1 y12)))
(let ((gx0 (min (glyph-x0 glyph) (- bx0 *enclosing-line-12*)))
(gy0 (min (glyph-y0 glyph) (- by0 *enclosing-line-12*)))
(gx1 (min (glyph-x1 glyph) (+ bx1 *enclosing-line-12*)))
(gy1 (min (glyph-y1 glyph) (+ by1 *enclosing-line-12*))))
(%make-barred-glyph
:width (glyph-width glyph)
:glyph glyph
:x0 gx0 :y0 gy0 :x1 gx1 :y1 gy1
:bx0 bx0 :by0 by0 :bx1 bx1 :by1 by1))))
(defmethod typeset-glyph ((glyph barred-glyph) out)
(let ((x *current-x*) (y *current-y*))
(typeset-glyph (magic-glyph-glyph glyph) out)
(finish-string out)
(setf *current-line-width* (scaled-quantity *enclosing-line-width*))
(synchronise-line-width out)
(format out "~A ~A MT ~A ~A LT stroke~%"
(+ x (scaled-quantity (barred-glyph-bx0 glyph)))
(+ y (scaled-quantity (barred-glyph-by0 glyph)))
(+ x (scaled-quantity (barred-glyph-bx1 glyph)))
(+ y (scaled-quantity (barred-glyph-by1 glyph))))
(setf *typesetter-x* nil *typesetter-y* nil)))
(defun make-overstruck-glyph (g1 g2 type)
(let (dx dy width)
(ecase type
((:double-h)
(setf dx 150 dy 0
width (max (glyph-width g1) (+ 150 (glyph-width g2)))))
((:double-v)
(setf dx 0 dy 150
width (max (glyph-width g1) (glyph-width g2))))
((:overstrike)
(setf dx 0 dy 0
width (max (glyph-width g1) (glyph-width g2)))))
(make-composite-glyph
:width width
:base :self
:components
(list (make-composite-component :glyph g1 :dx 0 :dy 0)
(make-composite-component :glyph g2 :dx dx :dy dy)))))
(defvar *small-matrix* #(0.5 0 0 0.5 0 0))
(defvar *lowercase-matrix* #(1 0 0 0.7 0 0))
(defvar *narrow-matrix* #(0.5 0 0 1 0 0))
(defvar *wide-matrix* #(2 0 0 1 0 0))
(defvar *mirror-h-matrix* #(-1 0 0 1 0 0))
(defvar *mirror-v-matrix* #(1 0 0 -1 0 0))
(defvar *turn-matrix* #(-1 0 0 -1 0 0))
(defvar *rotate-matrix* #(0 1 -1 0 0 0))
(defvar *rotate-right-matrix* #(0 -1 1 0 0 0))
(defvar *stretch-matrix* #(1 0 0 1.4 0 0))
(defun make-trans-glyph (glyph type)
(let ((matrix
(ecase type
((:super :sub :small) *small-matrix*)
((:lowercase) *lowercase-matrix*)
((:narrow) *narrow-matrix*)
((:wide) *wide-matrix*)
((:stretch) *stretch-matrix*)
((:mirror-h) *mirror-h-matrix*)
((:mirror-v) *mirror-v-matrix*)
((:rotate) *rotate-matrix*)
((:rotate-right) *rotate-right-matrix*)
((:turn) *turn-matrix*))))
(let ((glyph* (make-transformed-glyph glyph matrix)))
(and glyph*
(multiple-value-bind (width dx dy)
(ecase type
((:super) (values (glyph-width glyph*) 0 300))
((:sub) (values (glyph-width glyph*) 0 -300))
((:small :lowercase :narrow :wide :stretch)
(values (glyph-width glyph*) 0 0))
((:mirror-h) (values (glyph-width glyph)
(glyph-width glyph) 0))
((:mirror-v) (values (glyph-width glyph*) 0 (glyph-y1 glyph)))
((:turn) (values (glyph-width glyph)
(glyph-width glyph) (glyph-y1 glyph)))
((:rotate) (values (glyph-y1 glyph)
(glyph-y1 glyph) 0))
((:rotate-right) (values (glyph-y1 glyph)
0 (glyph-y1 glyph))))
(if (and (= width (glyph-width glyph*)) (= 0 dx) (= 0 dy))
glyph*
(make-composite-glyph
:base :self :width width
:components
(list (make-composite-component
:glyph glyph* :dx dx :dy dy)))))))))
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