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Most of this change is to boilerplate commentary such as license URLs. This change was prompted by ftp://ftp.gnu.org's going-away party, planned for November. Change these FTP URLs to https://ftp.gnu.org instead. Make similar changes for URLs to other organizations moving away from FTP. Also, change HTTP to HTTPS for URLs to gnu.org and fsf.org when this works, as this will further help defend against man-in-the-middle attacks (for this part I omitted the MS-DOS and MS-Windows sources and the test tarballs to keep the workload down). HTTPS is not fully working to lists.gnu.org so I left those URLs alone for now.
69 lines
2.8 KiB
Text
69 lines
2.8 KiB
Text
Copyright (C) 2002-2017 Free Software Foundation, Inc.
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See the end of the file for license conditions.
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New font handling mechanism with font backend method
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----------------------------------------------------
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The new files are:
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font.h -- header providing font-backend related structures
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(most important ones are "struct font" and "struct
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font_driver"), macros, and etc.
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font.c -- main font handling code.
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xfont.c -- font-driver on X for X core fonts.
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ftfont.c -- generic font-driver for FreeType fonts providing
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device-independent methods of struct font_driver.
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xftfont.c -- font-driver on X using Xft for FreeType fonts
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utilizing methods provided by ftfont.c.
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ftxfont.c -- font-driver on X directly using FreeType fonts
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utilizing methods provided by ftfont.c.
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w32font.c -- font driver on w32 using Windows native fonts,
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corresponding to xfont.c
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w32uniscribe.c -- font driver on w32, using the uniscribe API
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to provide complex script support for opentype fonts on
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Windows 2000 and later, or earlier versions of Windows
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with uniscribe installed as an add-on.
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So we already have codes for X and w32. For Mac it seems that we need
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these files:
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atmfont.c -- font-driver on mac using ATM fonts, corresponding
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to xfont.c
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As BDF fonts are currently used on w32, we may also implement these:
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bdffont.c -- generic font-driver for BDF fonts, corresponding to
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ftfont.c
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bdfw32font.c -- font-driver on w32 using BDF fonts,
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corresponding to ftxfont.c
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But, as FreeType already supports BDF fonts, if FreeType and
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Fontconfig are also available on w32, what we need may be:
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ftw32font.c -- font-driver on w32 directly using FreeType fonts
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utilizing methods provided by ftfont.c.
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It may be interesting if Emacs supports a frame buffer directly and
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has these font driver.
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ftfbfont.c -- font-driver on FB for FreeType fonts.
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bdffbfont.c -- font-driver on FB for BDF fonts.
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Note: The fontset related codes are not yet matured to work well with
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the font backend method. So, for instance, even if you start Emacs
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as something like this:
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% emacs -fn tahoma
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Non-ASCII Latin characters will not be displayed by the font "tahoma".
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In such a case, please try this:
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(set-fontset-font "fontset-default" 'latin '("tahoma" . "unicode-bmp"))
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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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