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diff --git a/Build/source/libs/freetype2/freetype-src/src/bdf/README b/Build/source/libs/freetype2/freetype-src/src/bdf/README deleted file mode 100644 index 996ac2d2aae..00000000000 --- a/Build/source/libs/freetype2/freetype-src/src/bdf/README +++ /dev/null @@ -1,148 +0,0 @@ - FreeType font driver for BDF fonts - - Francesco Zappa Nardelli - <francesco.zappa.nardelli@ens.fr> - - -Introduction -************ - -BDF (Bitmap Distribution Format) is a bitmap font format defined by Adobe, -which is intended to be easily understood by both humans and computers. -This code implements a BDF driver for the FreeType library, following the -Adobe Specification V 2.2. The specification of the BDF font format is -available from Adobe's web site: - - https://www.adobe.com/content/dam/acom/en/devnet/font/pdfs/5005.BDF_Spec.pdf - -Many good bitmap fonts in bdf format come with XFree86 (www.XFree86.org). -They do not define vertical metrics, because the X Consortium BDF -specification has removed them. - - -Encodings -********* - -The variety of encodings that accompanies bdf fonts appears to encompass the -small set defined in freetype.h. On the other hand, two properties that -specify encoding and registry are usually defined in bdf fonts. - -I decided to make these two properties directly accessible, leaving to the -client application the work of interpreting them. For instance: - - - #include FT_INTERNAL_BDF_TYPES_H - - FT_Face face; - BDF_Public_Face bdfface; - - - FT_New_Face( library, ..., &face ); - - bdfface = (BDF_Public_Face)face; - - if ( ( bdfface->charset_registry == "ISO10646" ) && - ( bdfface->charset_encoding == "1" ) ) - [..] - - -Thus the driver always exports `ft_encoding_none' as face->charmap.encoding. -FT_Get_Char_Index's behavior is unmodified, that is, it converts the ULong -value given as argument into the corresponding glyph number. - -If the two properties are not available, Adobe Standard Encoding should be -assumed. - - -Anti-Aliased Bitmaps -******************** - -The driver supports an extension to the BDF format as used in Mark Leisher's -xmbdfed bitmap font editor. Microsoft's SBIT tool expects bitmap fonts in -that format for adding anti-aliased them to TrueType fonts. It introduces a -fourth field to the `SIZE' keyword which gives the bpp value (bits per -pixel) of the glyph data in the font. Possible values are 1 (the default), -2 (four gray levels), 4 (16 gray levels), and 8 (256 gray levels). The -driver returns either a bitmap with 1 bit per pixel or a pixmap with 8bits -per pixel (using 4, 16, and 256 gray levels, respectively). - - -Known problems -************** - -- A font is entirely loaded into memory. Obviously, this is not the Right - Thing(TM). If you have big fonts I suggest you convert them into PCF - format (using the bdftopcf utility): the PCF font drive of FreeType can - perform incremental glyph loading. - -When I have some time, I will implement on-demand glyph parsing. - -- Except for encodings properties, client applications have no visibility of - the PCF_Face object. This means that applications cannot directly access - font tables and must trust FreeType. - -- Currently, glyph names are ignored. - - I plan to give full visibility of the BDF_Face object in an upcoming - revision of the driver, thus implementing also glyph names. - -- As I have never seen a BDF font that defines vertical metrics, vertical - metrics are (parsed and) discarded. If you own a BDF font that defines - vertical metrics, please let me know (I will implement them in 5-10 - minutes). - - -License -******* - -Copyright (C) 2001-2002 by Francesco Zappa Nardelli - -Permission is hereby granted, free of charge, to any person obtaining -a copy of this software and associated documentation files (the -"Software"), to deal in the Software without restriction, including -without limitation the rights to use, copy, modify, merge, publish, -distribute, sublicense, and/or sell copies of the Software, and to -permit persons to whom the Software is furnished to do so, subject to -the following conditions: - -The above copyright notice and this permission notice shall be -included in all copies or substantial portions of the Software. - -THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, -EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF -MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. -IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY -CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, -TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE -SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. - -*** Portions of the driver (that is, bdflib.c and bdf.h): - -Copyright 2000 Computing Research Labs, New Mexico State University -Copyright 2001-2002, 2011 Francesco Zappa Nardelli - -Permission is hereby granted, free of charge, to any person obtaining a -copy of this software and associated documentation files (the "Software"), -to deal in the Software without restriction, including without limitation -the rights to use, copy, modify, merge, publish, distribute, sublicense, -and/or sell copies of the Software, and to permit persons to whom the -Software is furnished to do so, subject to the following conditions: - -The above copyright notice and this permission notice shall be included in -all copies or substantial portions of the Software. - -THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL -THE COMPUTING RESEARCH LAB OR NEW MEXICO STATE UNIVERSITY BE LIABLE FOR ANY -CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT -OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR -THE USE OR OTHER DEALINGS IN THE SOFTWARE. - - -Credits -******* - -This driver is based on excellent Mark Leisher's bdf library. If you -find something good in this driver you should probably thank him, not -me. |