ref: 985b2457cda207c2c65edeb647aedbb6e92dac46
dir: /sys/src/cmd/gs/lib/gs_fapi.ps/
% Copyright (C) 2000 artofcode LLC. All rights reserved.
%
% This software is provided AS-IS with no warranty, either express or
% implied.
%
% This software is distributed under license and may not be copied,
% modified or distributed except as expressly authorized under the terms
% of the license contained in the file LICENSE in this distribution.
%
% For more information about licensing, please refer to
% http://www.ghostscript.com/licensing/. For information on
% commercial licensing, go to http://www.artifex.com/licensing/ or
% contact Artifex Software, Inc., 101 Lucas Valley Road #110,
% San Rafael, CA 94903, U.S.A., +1(415)492-9861.
% $Id: gs_fapi.ps,v 1.25 2003/04/12 18:08:18 ray Exp $
% Redefine Font and CIDFont categories with FAPI-handeled fonts.
systemdict /.FAPIavailable known { .FAPIavailable } { false } ifelse not {
(%END FAPI) .skipeof
} if
languagelevel 2 .setlanguagelevel
%====================================================================
% Redefine Font category with FAPIfontmap and CIDFont with FAPIfontmap :
15 dict begin % a temporary dictionary for local binding.
/EmbedFontObjectsQuery mark
/.EmbedFontObjects 0
.dicttomark def
/is_device_compatible_to_FAPI % - is_device_compatible_to_FAPI <bool>
{ currentdevice //EmbedFontObjectsQuery .getdeviceparams % <mark> <name> <value> ...
dup mark eq {
pop true
} {
exch pop exch pop 0 eq
} ifelse
% The code above assumes that only the requested parameter is rendered.
% The commented-out code below may be useful for general case.
% Keeping it for a while.
% counttomark 2 idiv {
% exch /.EmbedFontObjects eq {
% counttomark 1 add 1 roll cleartomark
% 0 eq exit
% } if
% } repeat
% dup mark eq {
% pop true
% } if
} bind def
%----------------------------- Process FAPIconfig -----------------------
/Config
<<
%% Replace 1 (FAPIconfig)
(FAPIconfig) .runlibfile
>> def
%------------------Copy the FontEmulationProcs here : -------------------
/FontEmulationProcs /ProcSet findresource {
def
} forall
currentdict /super.complete_instance currentdict /complete_instance get put
%-----------FAPI-specific methods for category redefinition : -----------
/RefinePath % <FontDict> /key RefinePath <FontDict>
{ exch begin
//Config exch get
/Path exch
Path false .file_name_combine not {
exch
(Can't combine paths ) print print ( and ) print =
/RefinePath /configurationerror signalerror
} if
def
currentdict end
} bind def
/complete_instance % <font_name> <FontDict> <Options> complete_FAPI_Font <font_name> <FontDict>
{ //super.complete_instance exec
dup /CIDFontName known { /CIDFontPath } { /FontPath } ifelse //RefinePath exec
} bind def
/IsMyRecord % <raw_record> -> <raw_record> bool
{ dup type /dicttype eq { dup /FAPI known } { false } ifelse
} bind def
/IsActive % <record> IsActive <bool>
{ pop //is_device_compatible_to_FAPI exec
} bind def
/FontRecordVirtualMethods //RecordVirtualMethodsStub dup length 2 add dict copy begin
/IsActive //IsActive def
/MakeInstance % <Name> <record> MakeInstance <Name> <Instance> <size>
{ //FontOptions //complete_instance exec
2 copy //GetSize exec
} bind def
currentdict end def
/CIDFontRecordVirtualMethods //RecordVirtualMethodsStub dup length 3 add dict copy begin
/GetCSI //TranslateCSI def
/IsActive //IsActive def
/MakeInstance % <Name> <record> MakeInstance <Name> <Instance> <size>
{ //CIDFontOptions //complete_instance exec
2 copy //GetSize exec
} bind def
currentdict end def
%----------------------------------The Redefintion---------------------
/MappedCategoryRedefiner /ProcSet findresource /Redefine get /Redefine exch def
% Redefine the /Font category :
4 dict begin
/CategoryName /Font def
/MapFileName (FAPIfontmap) def
/VerifyMap { pop } bind def
/PreprocessRecord % <map> <Name> <raw_record> PreprocessRecord <map> <Name> <record> <bool>
{ //IsMyRecord exec dup {
pop dup /RecordVirtualMethods //FontRecordVirtualMethods put
true
} if
} bind def
currentdict end Redefine
% Redefine the /CIDFont category :
4 dict begin
/CategoryName /CIDFont def
/MapFileName (FAPIcidfmap) def
/VerifyMap { pop } bind def
/PreprocessRecord % <map> <Name> <raw_record> PreprocessRecord <map> <Name> <record> <bool>
{ //IsMyRecord exec dup {
pop dup /RecordVirtualMethods //CIDFontRecordVirtualMethods put
true
} if
} bind def
currentdict end Redefine
%==================== A hook for buildfont* operators ====================
% The procedure .FAPIhook redirects PS fonts to FAPI on necessity.
% This depends on the following conditions :
%
% 1. If font dictionary has /FAPI entry, it is a font listed in FAPIconfig.FontPath,
% and must be build with .FAPIrebuildfont, or a copy of a font, which was
% built with .FAPIrebuildfont .
%
% 2. If the font dictionary has /PathLoad entry, and has no /FAPI entry,
% it is an installed PS font, which is described in lib/fontmap or
% in GS_FONTPATH. .loadfont inserts /PathLoad entry for this case
% (see gs_fonts.ps).
%
% Installed fonts are being loaded with GS font loader,
% the they are passed to FAPI is same way as embedded fonts are.
% We do so because UFST cannot read fonts, which don't
% follow Type 1/42 file format strongly.
%
% 3. Executing .loadfont, we place /FAPI_hook_disable in the 0th
% element of some procedure on the execution stack - see gs_fonts.ps .
% If FAPI_hook finds /FAPI_hook_disable in there,
% it knows that it is called for a disk font during
% its internal definefont.
%
% 4. If font dictionary has no /FAPI entry, and has no /Path entry,
% and if we are not in .loadfont context, it is an embedded font.
%
% 5. Two entries to be defined in lib/FAPIconfig to control the hooking of PS fonts :
% HookDiskFonts and HookEmbeddedFonts .
% They specify arrays of font types (integers) to be redirected with FAPI.
% HookDiskFonts controls disk PS fonts (which fall into (2) and (3) ).
% HookEmbeddedFonts controls fonts being embedded into documents.
%
% 7. We apply the operator .passtoFAPI for checking whether FAPI can handle a font.
% If so, we insert /FAPI entry into the font dictionary and convert it
% with .FAPIrebuildfont . Otherwise the font is handled with the native GS font renderer.
/FAPI_hook_debug % <proc> FAPI_hook_debug -
FAPIDEBUG { {exec} } { {pop} } ifelse
bind def
/FAPI_hook_warn % <proc> FAPI_hook_debug -
QUIET { {pop} } { {exec} } ifelse
bind def
/FAPI_is_hook_disabled % - FAPI_is_hook_disabled <bool>
{ % checks whether execution stack contains packedarray started with /FAPI_hook_disable .
/FAPI_hook_disable /MappedCategoryRedefiner /ProcSet findresource /execstack_lookup get exec
null ne
} bind def
/FAPIhook_aux % <string|name> <font_dict> .FAPIhook <string|name> <font>
{ % name <<font>>
{ (FAPIhook ) print 1 index = } //FAPI_hook_debug exec
dup /FAPI known {
{ //PrintFontRef exec ( is mapped to FAPI=) print dup /FAPI get = } //FAPI_hook_warn exec
true //.FAPIrebuildfont //ChooseDecoding exec
} {
dup /PathLoad known dup {
{ (PathLoad known for the font ) print //PrintFontRef exec (.) = } //FAPI_hook_debug exec
} {
pop //FAPI_is_hook_disabled exec dup
{ pop
{ (FAPIhook is in .loadfont context for the font ) print //PrintFontRef exec (.) = } //FAPI_hook_debug exec
true
} if
} ifelse
{ /HookDiskFonts } { /HookEmbeddedFonts } ifelse
//Config exch get % name <<font>> [types]
1 index //GetFontType exec //FindInArray exec % name <<font>> bHook
{ { (Trying to render the font ) print //PrintFontRef exec ( with FAPI...) = } //FAPI_hook_debug exec
//.FAPIpassfont {
{ //PrintFontRef exec ( is being rendered with FAPI=) print dup /FAPI get = } //FAPI_hook_warn exec
false //.FAPIrebuildfont //ChooseDecoding exec
} {
{ (Can't render ) print //PrintFontRef exec ( with FAPI, will do with native GS renderer.) = } //FAPI_hook_warn exec
} ifelse
} {
{ (The font ) print //PrintFontRef exec ( doesn't need to render with FAPI.) = } //FAPI_hook_debug exec
} ifelse
} ifelse
} bind def
/FAPIhook % <string|name> <font_dict> .FAPIhook <string|name> <font>
{ //is_device_compatible_to_FAPI exec
{ //FAPIhook_aux exec
} {
{ (FAPIhook is disabled for the current device.) = } //FAPI_hook_debug exec
} ifelse
} bind def
% ------------------ Redefine .buildfont* with FAPI : -----------------------
/.buildfont1
{ //.buildfont1 exec //FAPIhook exec
} bind % 'odef' is below.
/.buildfont2
{ //.buildfont2 exec //FAPIhook exec
} bind % 'odef' is below.
/.buildfont42
{ //.buildfont42 exec //FAPIhook exec
} bind % 'odef' is below.
/.buildfont9
{ //.buildfont9 exec //FAPIhook exec
} bind % 'odef' is below.
/.buildfont10
{ //.buildfont10 exec //FAPIhook exec
} bind % 'odef' is below.
/.buildfont11
{ //.buildfont11 exec //FAPIhook exec
} bind % 'odef' is below.
end % the temporary dictionary for local binding.
odef odef odef odef odef odef
.setlanguagelevel
%END FAPI