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* README: udpated 

* README.UNX: removed (now replaced by docs/INSTALL.UNX)

   * src/pshinter/pshalgo3.c: the hinter now performs as in 2.1.3 and
   will ignore stem quantization only when FT_LOAD_TARGET_SMOOTH is used

   * src/base/ftobjs.c: changed the default computations to include rounding
   in all cases, this is required to provide accurate kerning data when
   native TrueType hinting is enabled.

   * src/type1/t1load.c: the Type 1 loader now accepts more general names
   according to the Postscript spec (the previous one was too restrictive)
This commit is contained in:
David Turner 2003-03-27 21:35:44 +00:00
parent d6ec6eee78
commit 5158fbc03d
6 changed files with 51 additions and 174 deletions
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16
ChangeLog
View File

@ -1,3 +1,19 @@
2003-03-27 David Turner <david@freetype.org>
* README: udpated
* README.UNX: removed (now replaced by docs/INSTALL.UNX)
* src/pshinter/pshalgo3.c: the hinter now performs as in 2.1.3 and
will ignore stem quantization only when FT_LOAD_TARGET_SMOOTH is used
* src/base/ftobjs.c: changed the default computations to include rounding
in all cases, this is required to provide accurate kerning data when
native TrueType hinting is enabled.
* src/type1/t1load.c: the Type 1 loader now accepts more general names
according to the Postscript spec (the previous one was too restrictive)
2003-03-20 David Turner <david@freetype.org>
* docs/*: serious rewriting of the documentation

9
README
View File

@ -2,9 +2,9 @@
Special notes to Unix users
===========================
Please read the file "README.UNX", it contains important
information regarding the installation of FreeType on Unix
systems, especially GNU based operating systems like GNU/Linux.
Please read the file "docs/UPGRADE.UNX", it contains important
information regarding the installation of FreeType on Unix systems,
especially GNU based operating systems like GNU/Linux.
FreeType 2's library is called `libfreetype', FreeType 1's library
is called `libttf'. They are *not* compatible!
@ -16,8 +16,7 @@
Please read the docs/CHANGES file, it contains IMPORTANT
INFORMATION.
Read the files "docs/INSTALL" or "docs/BUILD" for installation
instructions.
Read the files "docs/INSTALL" for installation instructions.
Note that the FreeType 2 documentation is now available as a
separate package from our sites. See:

141
README.UNX
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@ -1,141 +0,0 @@
SPECIAL NOTE FOR UNIX USERS
===========================
If you are installing this release of FreeType on a system that
already uses release 2.0.5 (or even an older version), you have to
perform a few special steps to ensure that everything goes well.
I. Enable the TrueType bytecode hinter if you need it
-----------------------------------------------------
The TrueType bytecode interpreter is disabled in all public
releases of the FreeType packages for patents reasons (see
http://www.freetype.org/patents.html for more details).
However, many Linux distributions do enable the interpreter in the
FreeType packages (DEB/RPM/etc.) they produce for their platforms.
If you are using TrueType fonts on your system, you most probably
want to enable it manually by doing the following:
- open the file "include/freetype/config/ftoption.h"
- locate a line that says:
#undef TT_CONFIG_OPTION_BYTECODE_INTERPRETER
- change it to:
#define TT_CONFIG_OPTION_BYTECODE_INTERPRETER
of course, this must be done _before_ compiling the library
II. Determine the correct installation path
--------------------------------------------
By default, the source package will install the library in
"/usr/local". However, many Unix distributions now install the
library in "/usr", since FreeType is becoming a critical system
component.
If FreeType is already installed on your system, type
freetype-config --prefix
on the command line. This should return the installation path to
use below (e.g. "/usr" or "/usr/local"). Otherwise, simply use
"/usr" (or what you think is adequate for your installation).
III. Ensure that you are using GNU Make
---------------------------------------
The FreeType build system _exclusively_ works with GNU Make. You
will not be able to compile the library with the instructions
below using any other alternative (including BSD Make).
Trying to compile the library with a different Make tool will
print a message like:
Sorry, GNU make is required to build FreeType2.
and the build process will be aborted. If this happens, install
GNU Make on your system, and use the GNUMAKE environment variable
to name it.
IV. Build and install the library
---------------------------------
The following should work on all Unix systems where the `make'
command invokes GNU Make:
./configure --prefix=<yourprefix>
make
make install (as root)
where "<yourprefix>" must be replaced by the prefix returned by
the "freetype-config" command.
When using a different command to invoke GNU Make, use the GNUMAKE
variable. For example, if `gmake' is the command to use on your
system, do something like:
GNUMAKE=gmake ./configure --prefix=<yourprefix>
gmake
gmake install (as root)
If this still doesn't work, read the detailed compilation
procedure available in the file "docs/BUILD" for troubleshooting.
V. Take care of XFree86 version 4
---------------------------------
Certain recent Linux distributions will install _several_ versions
of FreeType on your system. For example, on a fresh Mandrake 8.1
system, you can find the following files:
/usr/lib/libfreetype.so which links to
/usr/lib/libfreetype.6.1.0.so
and
/usr/X11R6/lib/libfreetype.so which links to
/usr/X11R6/lib/libfreetype.6.0.so
Note that these files correspond to two distinct versions of the
library! It seems that this surprising issue is due to the
install scripts of recent XFree86 servers (from 4.1.0) which
irremediably install their own (dated) version of the library in
"/usr/X11R6/lib".
In certain _rare_ cases you may experience minor problems if you
install this release of the library in "/usr" only, namely, that
certain applications will not benefit from the bug fixes and
rendering improvements you'd expect.
There are two good ways to deal with this situation:
- Install the library _twice_, in "/usr" and in "/usr/X11R6"
(you have to do that each time you install a new FreeType
release though).
- Change the link in /usr/X11R6/lib/libfreetype.so to point to
/usr/lib/libfreetype.so,
and get rid of
/usr/X11R6/lib/libfreetype.6.0.so
The FreeType Team is not responsible for this problem, so please
contact either the XFree86 development team or your Linux
distributor to help clear this issue in case the information given
here doesn't help.

15
src/base/ftobjs.c
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@ -1425,20 +1425,13 @@
if ( char_height < 1 * 64 )
char_height = 1 * 64;
/* Compute pixel sizes in 26.6 units */
#ifdef FT_CONFIG_CHESTER_BLUE_SCALE
dim_x = ( char_width * horz_resolution ) / 72;
dim_y = ( char_height * vert_resolution ) / 72;
metrics->x_ppem = (FT_UShort)( (dim_x+32) >> 6 );
metrics->y_ppem = (FT_UShort)( (dim_y+32) >> 6 );
#else
dim_x = ( ( ( char_width * horz_resolution ) / 72 ) + 32 ) & -64;
dim_y = ( ( ( char_height * vert_resolution ) / 72 ) + 32 ) & -64;
/* Compute pixel sizes in 26.6 units. we use rounding
*/
dim_x = ( ( char_width * horz_resolution + (36+32*72) ) / 72 ) & -64;
dim_y = ( ( char_height * vert_resolution + (36+32*72) ) / 72 ) & -64;
metrics->x_ppem = (FT_UShort)( dim_x >> 6 );
metrics->y_ppem = (FT_UShort)( dim_y >> 6 );
#endif
metrics->x_scale = 0x10000L;
metrics->y_scale = 0x10000L;

8
src/pshinter/pshalgo3.c
View File

@ -332,7 +332,7 @@
/*************************************************************************/
/*************************************************************************/
#if 0
#if 1
static FT_Pos
psh3_dimension_quantize_len( PSH_Dimension dim,
FT_Pos len,
@ -520,7 +520,6 @@
hint->cur_pos = pos;
hint->cur_len = fit_len;
#if 0
/* stem adjustment tries to snap stem widths to standard
* ones. this is important to prevent unpleasant rounding
* artefacts...
@ -545,7 +544,6 @@
len = psh3_dimension_quantize_len( dim, len, 0 );
}
}
#endif /* 0 */
/* now that we have a good hinted stem width, try to position */
/* the stem along a pixel grid integer coordinate */
@ -602,6 +600,8 @@
}
#if 0 /* not used for now, experimental */
/*
* A variant to perform "light" hinting (i.e. FT_RENDER_MODE_LIGHT)
* of stems
@ -780,6 +780,8 @@
}
}
#endif /* 0 */
static void
psh3_hint_table_align_hints( PSH3_Hint_Table table,

36
src/type1/t1load.c
View File

@ -779,17 +779,25 @@
static int
is_alpha( FT_Byte c )
is_name_char( FT_Byte c )
{
/* Note: we must accept "+" as a valid character, as it is used in */
/* embedded type1 fonts in PDF documents. */
/* */
return ( ft_isalnum( c ) ||
c == '.' ||
c == '_' ||
c == '-' ||
c == '+' );
}
/* Note: PostScript allows any non-delimiting, non-whitespace */
/* in a name (PS Ref Manual, 3rd Ed, p31) */
/* PostScript delimiters include (,),<,>,[,],{,},/ and % */
return ( c != '(' &&
c != ')' &&
c != '<' &&
c != '>' &&
c != '[' &&
c != ']' &&
c != '{' &&
c != '}' &&
c != '/' &&
c != '%' &&
! is_space( c )
);
}
static int
@ -861,7 +869,7 @@
cur++;
cur2 = cur;
while ( cur2 < limit && is_alpha( *cur2 ) )
while ( cur2 < limit && is_name_char( *cur2 ) )
cur2++;
len = cur2 - cur;
@ -1070,7 +1078,7 @@
FT_PtrDist len;
while ( cur2 < limit && is_alpha( *cur2 ) )
while ( cur2 < limit && is_name_char( *cur2 ) )
cur2++;
len = cur2 - cur - 1;
@ -1312,7 +1320,7 @@
FT_PtrDist len;
while ( cur2 < limit && is_alpha( *cur2 ) )
while ( cur2 < limit && is_name_char( *cur2 ) )
cur2++;
len = cur2 - cur - 1;
@ -1572,7 +1580,7 @@
cur++;
cur2 = cur;
while ( cur2 < limit && is_alpha( *cur2 ) )
while ( cur2 < limit && is_name_char( *cur2 ) )
cur2++;
len = cur2 - cur;