From 5355161b0be8a3cd84c47f50cdd315d0d46561de Mon Sep 17 00:00:00 2001 From: Werner Lemberg Date: Wed, 8 Jun 2005 12:54:15 +0000 Subject: * Version 2.1.10 released. ========================== * src/pcf/readme: Renamed to... * src/pcf/README: This. --- ChangeLog | 10 +++++ src/pcf/README | 114 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ src/pcf/readme | 114 --------------------------------------------------------- 3 files changed, 124 insertions(+), 114 deletions(-) create mode 100644 src/pcf/README delete mode 100644 src/pcf/readme diff --git a/ChangeLog b/ChangeLog index e10793349..015faa97e 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,13 @@ +2005-06-08 Werner Lemberg + + + * Version 2.1.10 released. + ========================== + + + * src/pcf/readme: Renamed to... + * src/pcf/README: This. + 2005-06-07 Detlef Würkner * builds/amiga/*: Added copyright notes, reworked some comments. diff --git a/src/pcf/README b/src/pcf/README new file mode 100644 index 000000000..75f49e142 --- /dev/null +++ b/src/pcf/README @@ -0,0 +1,114 @@ + FreeType font driver for PCF fonts + + Francesco Zappa Nardelli + + + +Introduction +************ + +PCF (Portable Compiled Format) is a binary bitmap font format, largely used +in X world. This code implements a PCF driver for the FreeType library. +Glyph images are loaded into memory only on demand, thus leading to a small +memory footprint. + +Informations on the PCF font format can only be worked out from +``pcfread.c'', and ``pcfwrite.c'', to be found, for instance, in the XFree86 +(www.xfree86.org) source tree (xc/lib/font/bitmap/). + +Many good bitmap fonts in bdf format come with XFree86: they can be +compiled into the pcf format using the ``bdftopcf'' utility. + + +Supported hardware +****************** + +The driver has been tested on linux/x86 and sunos5.5/sparc. In both +cases the compiler was gcc. When back in Paris, I will test it also +on linux/alpha. + + +Encodings +********* + +The variety of encodings that accompanies pcf fonts appears to encompass the +small set defined in freetype.h. On the other hand, each pcf font defines +two properties that specify encoding and registry. + +I decided to make these two properties directly accessible, leaving to the +client application the work of interpreting them. For instance: + + #include "pcftypes.h" /* include/freetype/internal/pcftypes.h */ + + FT_Face face; + PCF_Public_Face pcfface; + + FT_New_Face( library,..., &face ); + + pcfface = (PCF_Public_Face)face; + + if ((pcfface->charset_registry == "ISO10646") && + (pcfface->charset_encoding) == "1")) [..] + +Thus the driver always export ``ft_encoding_none'' as +face->charmap.encoding. FT_Get_Char_Index() behavior is unmodified, that +is, it converts the ULong value given as argument into the corresponding +glyph number. + + +Known problems +************** + +- dealing explicitly with encodings breaks the uniformity of freetype2 + api. + +- except for encodings properties, client applications have no + visibility of the PCF_Face object. This means that applications + cannot directly access font tables and are obliged to trust + FreeType. + +- currently, glyph names and ink_metrics are ignored. + +I plan to give full visibility of the PCF_Face object in the next +release of the driver, thus implementing also glyph names and +ink_metrics. + +- height is defined as (ascent - descent). Is this correct? + +- if unable to read size informations from the font, PCF_Init_Face + sets available_size->width and available_size->height to 12. + +- too many english grammar errors in the readme file :-( + + +License +******* + +Copyright (C) 2000 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. + + +Credits +******* + +Keith Packard wrote the pcf driver found in XFree86. His work is at +the same time the specification and the sample implementation of the +PCF format. Undoubtedly, this driver is inspired from his work. diff --git a/src/pcf/readme b/src/pcf/readme deleted file mode 100644 index 75f49e142..000000000 --- a/src/pcf/readme +++ /dev/null @@ -1,114 +0,0 @@ - FreeType font driver for PCF fonts - - Francesco Zappa Nardelli - - - -Introduction -************ - -PCF (Portable Compiled Format) is a binary bitmap font format, largely used -in X world. This code implements a PCF driver for the FreeType library. -Glyph images are loaded into memory only on demand, thus leading to a small -memory footprint. - -Informations on the PCF font format can only be worked out from -``pcfread.c'', and ``pcfwrite.c'', to be found, for instance, in the XFree86 -(www.xfree86.org) source tree (xc/lib/font/bitmap/). - -Many good bitmap fonts in bdf format come with XFree86: they can be -compiled into the pcf format using the ``bdftopcf'' utility. - - -Supported hardware -****************** - -The driver has been tested on linux/x86 and sunos5.5/sparc. In both -cases the compiler was gcc. When back in Paris, I will test it also -on linux/alpha. - - -Encodings -********* - -The variety of encodings that accompanies pcf fonts appears to encompass the -small set defined in freetype.h. On the other hand, each pcf font defines -two properties that specify encoding and registry. - -I decided to make these two properties directly accessible, leaving to the -client application the work of interpreting them. For instance: - - #include "pcftypes.h" /* include/freetype/internal/pcftypes.h */ - - FT_Face face; - PCF_Public_Face pcfface; - - FT_New_Face( library,..., &face ); - - pcfface = (PCF_Public_Face)face; - - if ((pcfface->charset_registry == "ISO10646") && - (pcfface->charset_encoding) == "1")) [..] - -Thus the driver always export ``ft_encoding_none'' as -face->charmap.encoding. FT_Get_Char_Index() behavior is unmodified, that -is, it converts the ULong value given as argument into the corresponding -glyph number. - - -Known problems -************** - -- dealing explicitly with encodings breaks the uniformity of freetype2 - api. - -- except for encodings properties, client applications have no - visibility of the PCF_Face object. This means that applications - cannot directly access font tables and are obliged to trust - FreeType. - -- currently, glyph names and ink_metrics are ignored. - -I plan to give full visibility of the PCF_Face object in the next -release of the driver, thus implementing also glyph names and -ink_metrics. - -- height is defined as (ascent - descent). Is this correct? - -- if unable to read size informations from the font, PCF_Init_Face - sets available_size->width and available_size->height to 12. - -- too many english grammar errors in the readme file :-( - - -License -******* - -Copyright (C) 2000 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. - - -Credits -******* - -Keith Packard wrote the pcf driver found in XFree86. His work is at -the same time the specification and the sample implementation of the -PCF format. Undoubtedly, this driver is inspired from his work. -- cgit v1.2.1