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362 lines
9.4 KiB
EmacsLisp
362 lines
9.4 KiB
EmacsLisp
;;; ps-def.el --- XEmacs and Emacs definitions for ps-print -*- lexical-binding: t -*-
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;; Copyright (C) 2007-2018 Free Software Foundation, Inc.
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;; Author: Vinicius Jose Latorre <viniciusjl@ig.com.br>
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;; Kenichi Handa <handa@m17n.org> (multi-byte characters)
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;; Maintainer: Kenichi Handa <handa@m17n.org> (multi-byte characters)
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;; Vinicius Jose Latorre <viniciusjl@ig.com.br>
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;; Keywords: wp, print, PostScript
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;; X-URL: http://www.emacswiki.org/cgi-bin/wiki/ViniciusJoseLatorre
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;; Package: ps-print
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;; This file is part of GNU Emacs.
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;; GNU Emacs 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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;; GNU Emacs 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 GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
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;;; Commentary:
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;; See ps-print.el for documentation.
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;;; Code:
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(eval-and-compile
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(unless (fboundp 'declare-function) (defmacro declare-function (&rest _r))))
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(declare-function ps-plot-with-face "ps-print" (from to face))
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(declare-function ps-plot-string "ps-print" (string))
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(defvar ps-bold-faces) ; in ps-print.el
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(defvar ps-italic-faces)
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;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; XEmacs Definitions
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(cond
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((featurep 'xemacs) ; XEmacs
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;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; ps-bdf
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(defvar installation-directory nil)
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(defvar coding-system-for-read)
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;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; ps-mule
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(or (fboundp 'charset-dimension)
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(defun charset-dimension (_charset) 1)) ; ascii
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(or (fboundp 'char-width)
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(defun char-width (_char) 1)) ; ascii
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(or (fboundp 'encode-char)
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(defun encode-char (ch _ccs)
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ch))
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;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; ps-print
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;; GNU Emacs
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(or (fboundp 'line-beginning-position)
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(defun line-beginning-position (&optional n)
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(save-excursion
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(and n (/= n 1) (forward-line (1- n)))
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(beginning-of-line)
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(point))))
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;; GNU Emacs
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(or (fboundp 'find-composition)
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(defalias 'find-composition 'ignore))
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(defun ps-xemacs-color-name (color)
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(if (color-specifier-p color)
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(color-name color)
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color))
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(defalias 'ps-mark-active-p 'region-active-p)
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(defun ps-face-foreground-name (face)
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(ps-xemacs-color-name (face-foreground face)))
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(defun ps-face-background-name (face)
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(ps-xemacs-color-name (face-background face)))
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(defalias 'ps-frame-parameter 'frame-property)
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;; Return t if the device (which can be changed during an emacs session)
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;; can handle colors.
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(defun ps-color-device ()
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(eq (device-class) 'color))
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(defun ps-mapper (extent list)
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(nconc list
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(list (list (extent-start-position extent) 'push extent)
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(list (extent-end-position extent) 'pull extent)))
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nil)
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(defun ps-extent-sorter (a b)
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(< (extent-priority a) (extent-priority b)))
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(defun ps-xemacs-face-kind-p (face kind kind-regex)
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(let* ((frame-font (or (face-font-instance face)
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(face-font-instance 'default)))
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(kind-cons
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(and frame-font
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(assq kind
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(font-instance-properties frame-font))))
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(kind-spec (cdr-safe kind-cons))
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(case-fold-search t))
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(and kind-spec (string-match kind-regex kind-spec))))
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;; to avoid XEmacs compilation gripes
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(defvar coding-system-for-write)
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(defvar buffer-file-coding-system)
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(and (fboundp 'find-coding-system)
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(or (funcall 'find-coding-system 'raw-text-unix)
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(funcall 'copy-coding-system 'no-conversion-unix 'raw-text-unix)))
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(defun ps-color-values (x-color)
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(let ((color (ps-xemacs-color-name x-color)))
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(cond
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((fboundp 'x-color-values)
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(funcall 'x-color-values color))
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((and (fboundp 'color-instance-rgb-components)
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(ps-color-device))
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(funcall 'color-instance-rgb-components
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(if (color-instance-p x-color)
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x-color
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(make-color-instance color))))
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(t
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(error "No available function to determine X color values")))))
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(defun ps-face-bold-p (face)
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(or (ps-xemacs-face-kind-p face 'WEIGHT_NAME "bold\\|demibold")
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(memq face ps-bold-faces))) ; Kludge-compatible
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(defun ps-face-italic-p (face)
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(or (ps-xemacs-face-kind-p face 'ANGLE_NAME "i\\|o")
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(ps-xemacs-face-kind-p face 'SLANT "i\\|o")
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(memq face ps-italic-faces))) ; Kludge-compatible
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(defalias 'ps-face-strikeout-p 'ignore)
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(defalias 'ps-face-overline-p 'ignore)
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(defalias 'ps-face-box-p 'ignore)
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;; XEmacs will have to make do with %s (princ) for floats.
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(defvar ps-color-format "%s %s %s")
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(defvar ps-float-format "%s ")
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(defun ps-generate-postscript-with-faces1 (from to)
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;; Generate some PostScript.
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(let ((face 'default)
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(position to)
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;; XEmacs
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;; Build the list of extents...
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(a (cons 'dummy nil))
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record type extent extent-list)
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(map-extents 'ps-mapper nil from to a)
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(setq a (sort (cdr a) 'car-less-than-car)
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extent-list nil)
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;; Loop through the extents...
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(while a
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(setq record (car a)
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position (car record)
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record (cdr record)
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type (car record)
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record (cdr record)
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extent (car record))
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;; Plot up to this record.
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;; XEmacs 19.12: for some reason, we're getting into a
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;; situation in which some of the records have
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;; positions less than 'from'. Since we've narrowed
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;; the buffer, this'll generate errors. This is a hack,
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;; but don't call ps-plot-with-face unless from > point-min.
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(and (>= from (point-min))
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(ps-plot-with-face from (min position (point-max)) face))
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(cond
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((eq type 'push)
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(and (extent-face extent)
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(setq extent-list (sort (cons extent extent-list)
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'ps-extent-sorter))))
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((eq type 'pull)
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(setq extent-list (sort (delq extent extent-list)
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'ps-extent-sorter))))
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(setq face (if extent-list
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(extent-face (car extent-list))
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'default)
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from position
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a (cdr a)))
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(ps-plot-with-face from to face)))
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)
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(t ; Emacs
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;; Do nothing
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)) ; end cond featurep
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;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; Emacs Definitions
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(cond
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((featurep 'xemacs) ; XEmacs
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;; Do nothing
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)
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(t ; Emacs
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;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; ps-print
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(defun ps-mark-active-p ()
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mark-active)
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(defun ps-face-foreground-name (face)
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(face-foreground face nil t))
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(defun ps-face-background-name (face)
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(face-background face nil t))
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(defalias 'ps-frame-parameter 'frame-parameter)
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;; Return t if the device (which can be changed during an emacs session) can
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;; handle colors. This function is not yet implemented for GNU emacs.
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(defun ps-color-device ()
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(if (fboundp 'color-values)
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(funcall 'color-values "Green")
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t))
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(defun ps-color-values (x-color)
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(cond
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((fboundp 'color-values)
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(funcall 'color-values x-color))
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((fboundp 'x-color-values)
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(funcall 'x-color-values x-color))
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(t
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(error "No available function to determine X color values"))))
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(defun ps-face-bold-p (face)
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(or (face-bold-p face)
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(memq face ps-bold-faces)))
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(defun ps-face-italic-p (face)
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(or (face-italic-p face)
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(memq face ps-italic-faces)))
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(defun ps-face-strikeout-p (face)
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(eq (face-attribute face :strike-through) t))
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(defun ps-face-overline-p (face)
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(eq (face-attribute face :overline) t))
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(defun ps-face-box-p (face)
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(not (memq (face-attribute face :box) '(nil unspecified))))
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;; Emacs understands the %f format; we'll use it to limit color RGB values
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;; to three decimals to cut down some on the size of the PostScript output.
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(defvar ps-color-format "%0.3f %0.3f %0.3f")
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(defvar ps-float-format "%0.3f ")
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(defun ps-generate-postscript-with-faces1 (from to)
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;; Generate some PostScript.
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(let ((face 'default)
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(position to)
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;; Emacs
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(property-change from)
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(overlay-change from)
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before-string after-string)
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(while (< from to)
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(and (< property-change to) ; Don't search for property change
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; unless previous search succeeded.
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(setq property-change (next-property-change from nil to)))
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(and (< overlay-change to) ; Don't search for overlay change
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; unless previous search succeeded.
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(setq overlay-change (min (next-overlay-change from)
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to)))
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(setq position (min property-change overlay-change)
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before-string nil
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after-string nil)
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(setq face
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(cond ((invisible-p from)
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'emacs--invisible--face)
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((get-char-property from 'face))
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(t 'default)))
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;; Plot up to this record.
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(and before-string
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(ps-plot-string before-string))
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(ps-plot-with-face from position face)
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(and after-string
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(ps-plot-string after-string))
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(setq from position))
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(ps-plot-with-face from to face)))
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)) ; end cond featurep
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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(provide 'ps-def)
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;;; ps-def.el ends here
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