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419 lines
10 KiB
EmacsLisp
419 lines
10 KiB
EmacsLisp
;;; nxml-glyph.el --- glyph-handling for nxml-mode
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;; Copyright (C) 2003, 2007-2011 Free Software Foundation, Inc.
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;; Author: James Clark
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;; Keywords: XML
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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 <http://www.gnu.org/licenses/>.
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;;; Commentary:
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;; The entry point to this file is `nxml-glyph-display-string'.
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;; The current implementation is heuristic due to a lack of
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;; Emacs primitives necessary to implement it properly. The user
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;; can tweak the heuristics using `nxml-glyph-set-hook'.
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;;; Code:
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(defconst nxml-ascii-glyph-set
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[(#x0020 . #x007E)])
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(defconst nxml-latin1-glyph-set
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[(#x0020 . #x007E)
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(#x00A0 . #x00FF)])
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;; These were generated by using nxml-insert-target-repertoire-glyph-set
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;; on the TARGET[123] files in
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;; http://www.cl.cam.ac.uk/~mgk25/download/ucs-fonts.tar.gz
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(defconst nxml-misc-fixed-1-glyph-set
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[(#x0020 . #x007E)
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(#x00A0 . #x00FF)
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(#x0100 . #x017F)
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#x018F #x0192
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(#x0218 . #x021B)
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#x0259
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(#x02C6 . #x02C7)
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(#x02D8 . #x02DD)
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(#x0374 . #x0375)
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#x037A #x037E
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(#x0384 . #x038A)
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#x038C
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(#x038E . #x03A1)
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(#x03A3 . #x03CE)
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(#x0401 . #x040C)
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(#x040E . #x044F)
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(#x0451 . #x045C)
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(#x045E . #x045F)
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(#x0490 . #x0491)
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(#x05D0 . #x05EA)
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(#x1E02 . #x1E03)
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(#x1E0A . #x1E0B)
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(#x1E1E . #x1E1F)
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(#x1E40 . #x1E41)
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(#x1E56 . #x1E57)
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(#x1E60 . #x1E61)
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(#x1E6A . #x1E6B)
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(#x1E80 . #x1E85)
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(#x1EF2 . #x1EF3)
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(#x2010 . #x2022)
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#x2026 #x2030
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(#x2039 . #x203A)
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#x20AC #x2116 #x2122 #x2126
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(#x215B . #x215E)
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(#x2190 . #x2193)
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#x2260
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(#x2264 . #x2265)
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(#x23BA . #x23BD)
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(#x2409 . #x240D)
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#x2424 #x2500 #x2502 #x250C #x2510 #x2514 #x2518 #x251C #x2524 #x252C #x2534 #x253C #x2592 #x25C6 #x266A #xFFFD]
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"Glyph set for TARGET1 glyph repertoire of misc-fixed-* font.
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This repertoire is supported for the bold and oblique fonts.")
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(defconst nxml-misc-fixed-2-glyph-set
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[(#x0020 . #x007E)
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(#x00A0 . #x00FF)
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(#x0100 . #x017F)
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#x018F #x0192
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(#x01FA . #x01FF)
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(#x0218 . #x021B)
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#x0259
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(#x02C6 . #x02C7)
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#x02C9
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(#x02D8 . #x02DD)
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(#x0300 . #x0311)
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(#x0374 . #x0375)
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#x037A #x037E
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(#x0384 . #x038A)
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#x038C
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(#x038E . #x03A1)
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(#x03A3 . #x03CE)
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#x03D1
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(#x03D5 . #x03D6)
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#x03F1
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(#x0401 . #x040C)
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(#x040E . #x044F)
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(#x0451 . #x045C)
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(#x045E . #x045F)
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(#x0490 . #x0491)
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(#x05D0 . #x05EA)
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(#x1E02 . #x1E03)
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(#x1E0A . #x1E0B)
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(#x1E1E . #x1E1F)
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(#x1E40 . #x1E41)
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(#x1E56 . #x1E57)
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(#x1E60 . #x1E61)
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(#x1E6A . #x1E6B)
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(#x1E80 . #x1E85)
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(#x1EF2 . #x1EF3)
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(#x2010 . #x2022)
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#x2026 #x2030
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(#x2032 . #x2034)
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(#x2039 . #x203A)
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#x203C #x203E #x2044
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(#x2070 . #x2071)
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(#x2074 . #x208E)
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(#x20A3 . #x20A4)
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#x20A7 #x20AC
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(#x20D0 . #x20D7)
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#x2102 #x2105 #x2113
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(#x2115 . #x2116)
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#x211A #x211D #x2122 #x2124 #x2126 #x212E
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(#x215B . #x215E)
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(#x2190 . #x2195)
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(#x21A4 . #x21A8)
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(#x21D0 . #x21D5)
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(#x2200 . #x2209)
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(#x220B . #x220C)
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#x220F
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(#x2211 . #x2213)
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#x2215
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(#x2218 . #x221A)
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(#x221D . #x221F)
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#x2221
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(#x2224 . #x222B)
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#x222E #x223C #x2243 #x2245
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(#x2248 . #x2249)
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#x2259
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(#x225F . #x2262)
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(#x2264 . #x2265)
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(#x226A . #x226B)
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(#x2282 . #x228B)
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#x2295 #x2297
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(#x22A4 . #x22A7)
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(#x22C2 . #x22C3)
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#x22C5 #x2300 #x2302
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(#x2308 . #x230B)
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#x2310
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(#x2320 . #x2321)
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(#x2329 . #x232A)
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(#x23BA . #x23BD)
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(#x2409 . #x240D)
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#x2424 #x2500 #x2502 #x250C #x2510 #x2514 #x2518 #x251C #x2524 #x252C #x2534 #x253C
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(#x254C . #x2573)
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(#x2580 . #x25A1)
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(#x25AA . #x25AC)
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(#x25B2 . #x25B3)
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#x25BA #x25BC #x25C4 #x25C6
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(#x25CA . #x25CB)
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#x25CF
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(#x25D8 . #x25D9)
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#x25E6
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(#x263A . #x263C)
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#x2640 #x2642 #x2660 #x2663
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(#x2665 . #x2666)
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(#x266A . #x266B)
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(#xFB01 . #xFB02)
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#xFFFD]
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"Glyph set for TARGET2 glyph repertoire of the misc-fixed-* fonts.
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This repertoire is supported for the following fonts:
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5x7.bdf 5x8.bdf 6x9.bdf 6x10.bdf 6x12.bdf 7x13.bdf 7x14.bdf clR6x12.bdf")
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(defconst nxml-misc-fixed-3-glyph-set
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[(#x0020 . #x007E)
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(#x00A0 . #x00FF)
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(#x0100 . #x01FF)
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(#x0200 . #x0220)
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(#x0222 . #x0233)
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(#x0250 . #x02AD)
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(#x02B0 . #x02EE)
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(#x0300 . #x034F)
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(#x0360 . #x036F)
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(#x0374 . #x0375)
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#x037A #x037E
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(#x0384 . #x038A)
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#x038C
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(#x038E . #x03A1)
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(#x03A3 . #x03CE)
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(#x03D0 . #x03F6)
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(#x0400 . #x0486)
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(#x0488 . #x04CE)
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(#x04D0 . #x04F5)
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(#x04F8 . #x04F9)
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(#x0500 . #x050F)
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(#x0531 . #x0556)
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(#x0559 . #x055F)
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(#x0561 . #x0587)
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(#x0589 . #x058A)
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(#x05B0 . #x05B9)
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(#x05BB . #x05C4)
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(#x05D0 . #x05EA)
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(#x05F0 . #x05F4)
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(#x10D0 . #x10F8)
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#x10FB
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(#x1E00 . #x1E9B)
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(#x1EA0 . #x1EF9)
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(#x1F00 . #x1F15)
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(#x1F18 . #x1F1D)
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(#x1F20 . #x1F45)
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(#x1F48 . #x1F4D)
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(#x1F50 . #x1F57)
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#x1F59 #x1F5B #x1F5D
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(#x1F5F . #x1F7D)
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(#x1F80 . #x1FB4)
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(#x1FB6 . #x1FC4)
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(#x1FC6 . #x1FD3)
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(#x1FD6 . #x1FDB)
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(#x1FDD . #x1FEF)
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(#x1FF2 . #x1FF4)
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(#x1FF6 . #x1FFE)
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(#x2000 . #x200A)
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(#x2010 . #x2027)
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(#x202F . #x2052)
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#x2057
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(#x205F . #x2063)
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(#x2070 . #x2071)
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(#x2074 . #x208E)
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(#x20A0 . #x20B1)
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(#x20D0 . #x20EA)
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(#x2100 . #x213A)
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(#x213D . #x214B)
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(#x2153 . #x2183)
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(#x2190 . #x21FF)
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(#x2200 . #x22FF)
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(#x2300 . #x23CE)
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(#x2400 . #x2426)
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(#x2440 . #x244A)
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(#x2500 . #x25FF)
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(#x2600 . #x2613)
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(#x2616 . #x2617)
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(#x2619 . #x267D)
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(#x2680 . #x2689)
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(#x27E6 . #x27EB)
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(#x27F5 . #x27FF)
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(#x2A00 . #x2A06)
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#x2A1D #x2A3F #x303F
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(#xFB00 . #xFB06)
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(#xFB13 . #xFB17)
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(#xFB1D . #xFB36)
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(#xFB38 . #xFB3C)
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#xFB3E
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(#xFB40 . #xFB41)
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(#xFB43 . #xFB44)
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(#xFB46 . #xFB4F)
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(#xFE20 . #xFE23)
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(#xFF61 . #xFF9F)
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#xFFFD]
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"Glyph set for TARGET3 glyph repertoire of the misc-fixed-* fonts.
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This repertoire is supported for the following fonts:
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6x13.bdf 8x13.bdf 9x15.bdf 9x18.bdf 10x20.bdf")
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(defconst nxml-wgl4-glyph-set
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[(#x0020 . #x007E)
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(#x00A0 . #x017F)
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#x0192
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(#x01FA . #x01FF)
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(#x02C6 . #x02C7)
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#x02C9
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(#x02D8 . #x02DB)
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#x02DD
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(#x0384 . #x038A)
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#x038C
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(#x038E . #x03A1)
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(#x03A3 . #x03CE)
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(#x0401 . #x040C)
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(#x040E . #x044F)
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(#x0451 . #x045C)
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(#x045E . #x045F)
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(#x0490 . #x0491)
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(#x1E80 . #x1E85)
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(#x1EF2 . #x1EF3)
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(#x2013 . #x2015)
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(#x2017 . #x201E)
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(#x2020 . #x2022)
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#x2026 #x2030
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(#x2032 . #x2033)
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(#x2039 . #x203A)
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#x203C #x203E #x2044 #x207F
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(#x20A3 . #x20A4)
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#x20A7 #x20AC #x2105 #x2113 #x2116 #x2122 #x2126 #x212E
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(#x215B . #x215E)
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(#x2190 . #x2195)
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#x21A8 #x2202 #x2206 #x220F
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(#x2211 . #x2212)
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#x2215
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(#x2219 . #x221A)
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(#x221E . #x221F)
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#x2229 #x222B #x2248
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(#x2260 . #x2261)
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(#x2264 . #x2265)
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#x2302 #x2310
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(#x2320 . #x2321)
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#x2500 #x2502 #x250C #x2510 #x2514 #x2518 #x251C #x2524
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#x252C #x2534 #x253C
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(#x2550 . #x256C)
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#x2580 #x2584 #x2588 #x258C
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(#x2590 . #x2593)
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(#x25A0 . #x25A1)
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(#x25AA . #x25AC)
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#x25B2 #x25BA #x25BC #x25C4
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(#x25CA . #x25CB)
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#x25CF
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(#x25D8 . #x25D9)
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#x25E6
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(#x263A . #x263C)
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#x2640 #x2642 #x2660 #x2663
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(#x2665 . #x2666)
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(#x266A . #x266B)
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(#xFB01 . #xFB02)]
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"Glyph set corresponding to Windows Glyph List 4.")
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(defvar nxml-glyph-set-hook nil
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"*Hook for determining the set of glyphs in a face.
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The hook will receive a single argument FACE. If it can determine
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the set of glyphs representable by FACE, it must set the variable
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`nxml-glyph-set' and return non-nil. Otherwise, it must return nil.
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The hook will be run until success. The constants
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`nxml-ascii-glyph-set', `nxml-latin1-glyph-set',
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`nxml-misc-fixed-1-glyph-set', `nxml-misc-fixed-2-glyph-set',
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`nxml-misc-fixed-3-glyph-set' and `nxml-wgl4-glyph-set' are
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predefined for use by `nxml-glyph-set-hook'.")
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(defvar nxml-glyph-set nil
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"Used by `nxml-glyph-set-hook' to return set of glyphs in a FACE.
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This should dynamically bound by any function that runs
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`nxml-glyph-set-hook'. The value must be either nil representing an
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empty set or a vector. Each member of the vector is either a single
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integer or a cons (FIRST . LAST) representing the range of integers
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from FIRST to LAST. An integer represents a glyph with that Unicode
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code-point. The vector must be ordered.")
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(defun nxml-x-set-glyph-set (face)
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(setq nxml-glyph-set
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(if (equal (face-attribute face :family) "misc-fixed")
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nxml-misc-fixed-3-glyph-set
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nxml-wgl4-glyph-set)))
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(defun nxml-w32-set-glyph-set (face)
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(setq nxml-glyph-set nxml-wgl4-glyph-set))
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(defun nxml-window-system-set-glyph-set (face)
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(setq nxml-glyph-set nxml-latin1-glyph-set))
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(defun nxml-terminal-set-glyph-set (face)
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(setq nxml-glyph-set nxml-ascii-glyph-set))
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(add-hook 'nxml-glyph-set-hook
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(or (cdr (assq window-system
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'((x . nxml-x-set-glyph-set)
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(w32 . nxml-w32-set-glyph-set)
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(nil . nxml-terminal-set-glyph-set))))
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'nxml-window-system-set-glyph-set)
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t)
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;;;###autoload
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(defun nxml-glyph-display-string (n face)
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"Return a string that can display a glyph for Unicode code-point N.
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FACE gives the face that will be used for displaying the string.
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Return nil if the face cannot display a glyph for N."
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(let ((nxml-glyph-set nil))
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(run-hook-with-args-until-success 'nxml-glyph-set-hook face)
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(and nxml-glyph-set
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(nxml-glyph-set-contains-p n nxml-glyph-set)
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(let ((ch (decode-char 'ucs n)))
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(and ch (string ch))))))
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(defun nxml-glyph-set-contains-p (n v)
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(let ((start 0)
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(end (length v))
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found mid mid-val mid-start-val mid-end-val)
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(while (> end start)
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(setq mid (+ start
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(/ (- end start) 2)))
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(setq mid-val (aref v mid))
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(if (consp mid-val)
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(setq mid-start-val (car mid-val)
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mid-end-val (cdr mid-val))
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(setq mid-start-val mid-val
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mid-end-val mid-val))
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(cond ((and (<= mid-start-val n)
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(<= n mid-end-val))
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(setq found t)
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(setq start end))
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((< n mid-start-val)
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(setq end mid))
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(t
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(setq start
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(if (eq start mid)
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end
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mid)))))
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found))
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(provide 'nxml-glyph)
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;;; nxml-glyph.el ends here
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