/usr/share/common-lisp/source/zpb-ttf/hmtx.lisp is in cl-zpb-ttf 0.7-2.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 | ;;; Copyright (c) 2006 Zachary Beane, All Rights Reserved
;;;
;;; Redistribution and use in source and binary forms, with or without
;;; modification, are permitted provided that the following conditions
;;; are met:
;;;
;;; * Redistributions of source code must retain the above copyright
;;; notice, this list of conditions and the following disclaimer.
;;;
;;; * Redistributions in binary form must reproduce the above
;;; copyright notice, this list of conditions and the following
;;; disclaimer in the documentation and/or other materials
;;; provided with the distribution.
;;;
;;; THIS SOFTWARE IS PROVIDED BY THE AUTHOR 'AS IS' AND ANY EXPRESSED
;;; OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
;;; WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
;;; ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
;;; DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
;;; DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
;;; GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
;;; INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
;;; WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
;;; NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
;;; SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
;;;
;;; Loading data from the "hmtx" table.
;;;
;;; http://www.microsoft.com/OpenType/OTSpec/hmtx.htm
;;; http://developer.apple.com/fonts/TTRefMan/RM06/Chap6hmtx.html
;;;
;;; hmtx.lisp,v 1.3 2006/02/18 23:13:43 xach Exp
(in-package #:zpb-ttf)
(defmethod load-hmtx-info ((font-loader font-loader))
(let* ((horizontal-metrics-count (horizontal-metrics-count font-loader))
(advance-widths (make-array horizontal-metrics-count))
(left-side-bearings (make-array horizontal-metrics-count)))
(seek-to-table "hmtx" font-loader)
(with-slots (input-stream) font-loader
(dotimes (i horizontal-metrics-count)
(setf (svref advance-widths i) (read-uint16 input-stream))
(setf (svref left-side-bearings i) (read-int16 input-stream))))
(setf (advance-widths font-loader) advance-widths
(left-side-bearings font-loader) left-side-bearings)))
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