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Re: [ft-devel] PDF text rendering error
From: |
suzuki toshiya |
Subject: |
Re: [ft-devel] PDF text rendering error |
Date: |
Mon, 11 Jun 2012 17:40:17 +0900 |
User-agent: |
Mozilla-Thunderbird 2.0.0.12 (X11/20080406) |
Attached is my proposal to fix this issue, please try.
In my case (Debian GNU/Linux xpdf-3.02-11), using the
patched freetype library by LD_PRELOAD, xpdf shows
readable result (without patch, the result is unreadable).
Regards,
mpsuzuki
suzuki toshiya wrote:
Johnson Y. Yan wrote (2012/06/11 16:03):
Werner and Toshiya-san,
I put the font as a tricky font to deal with.
static const char trick_names[TRICK_NAMES_COUNT]
[TRICK_NAMES_MAX_CHARACTERS + 1] =
{
"DFKaiSho-SB", /* dfkaisb.ttf */
"DFKaiShu",
"DFKai-SB", /* kaiu.ttf */
"HuaTianKaiTi?", /* htkt2.ttf */
"HuaTianSongTi?", /* htst3.ttf */
"MingLiU", /* mingliu.ttf & mingliu.ttc */
"PMingLiU", /* mingliu.ttc */
"MingLi43", /* mingli.ttf */
"BKLGIB+FA" ---------------------------------------- this is the
embeded font in th document.
};
it still render error. .
Including the randomization prefix to the tricky font name list is bad
idea.
I opened the embeded font use font lab, found the gid = 2134 is like
this, please see the attach bitmap,
some of lines form a 0 area areas, then fill the area(have no area),
Does freetype made special processing?
Johnson Y. Yan
发件人: Werner LEMBERG
发送时间: 2012-06-11 12:55:42
收件人: yinsen_yan
抄送: freetype-devel; mpsuzuki
主题: Re: PDF text rendering error
Do you mean the font must be rendered use
TT_CONFIG_OPTION_BYTECODE_INTERPRETER?
No, the FreeType *library* must be built with it: Edit ftoption.h to
set this flag, then recompile.
Additionally, hinting must be enabled for this font, this is,
FT_LOAD_NO_SCALE doesn't work here.
Normally, those steps are (more or less) handled automatically by
FreeType, since we maintain a list of `tricky' font like the one you
have encountered in the PDF; see file `ttobjs.c'. The subsetted font
in question, however, which identifies itself as
BKLGIB+FA-RoundGothicB
FA 丸ゴシックB and FA-RoundGothicB are trademarks of NEC Office
Systems,Ltd.
isn't in this list; for the NEC FA fonts (and others), a second
mechanism is used which doesn't work with subsetted fonts.
Toshiya-san, any ideas?
Werner
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diff --git a/src/truetype/ttobjs.c b/src/truetype/ttobjs.c
index 814c713..1f8a768 100644
--- a/src/truetype/ttobjs.c
+++ b/src/truetype/ttobjs.c
@@ -244,7 +244,7 @@
tt_check_trickyness_sfnt_ids( TT_Face face )
{
#define TRICK_SFNT_IDS_PER_FACE 3
-#define TRICK_SFNT_IDS_NUM_FACES 13
+#define TRICK_SFNT_IDS_NUM_FACES 17
static const tt_sfnt_id_rec sfnt_id[TRICK_SFNT_IDS_NUM_FACES]
[TRICK_SFNT_IDS_PER_FACE] = {
@@ -317,6 +317,26 @@
{ 0x00000000, 0x00000000 }, /* cvt */
{ 0x0d3de9cb, 0x00000141 }, /* fpgm */
{ 0xd4127766, 0x00002280 } /* prep */
+ },
+ { /* NEC FA-Gothic, 1996 */
+ { 0x00000000, 0x00000000 }, /* cvt */
+ { 0x4a692698, 0x000001f0 }, /* fpgm */
+ { 0x340d4346, 0x00001fca } /* prep */
+ },
+ { /* NEC FA-Minchou, 1996 */
+ { 0x00000000, 0x00000000 }, /* cvt */
+ { 0xcd34c604, 0x00000166 }, /* fpgm */
+ { 0x6cf31046, 0x000022b0 } /* prep */
+ },
+ { /* NEC FA-RoundGothicB, 1996 */
+ { 0x00000000, 0x00000000 }, /* cvt */
+ { 0x5da75315, 0x0000019d }, /* fpgm */
+ { 0x40745a5f, 0x000022e0 } /* prep */
+ },
+ { /* NEC FA-RoundGothicM, 1996 */
+ { 0x00000000, 0x00000000 }, /* cvt */
+ { 0xf055fc48, 0x000001c2 }, /* fpgm */
+ { 0x3900ded3, 0x00001e18 } /* prep */
}
};
- [ft-devel] PDF text rendering error, Johnson Y. Yan, 2012/06/07
- Re: [ft-devel] PDF text rendering error, Werner LEMBERG, 2012/06/07
- Re: [ft-devel] PDF text rendering error, Johnson Y. Yan, 2012/06/10
- Re: [ft-devel] PDF text rendering error, suzuki toshiya, 2012/06/11
- Re: [ft-devel] PDF text rendering error, Johnson Y. Yan, 2012/06/11
- Re: [ft-devel] PDF text rendering error, Johnson Y. Yan, 2012/06/11
- Re: [ft-devel] PDF text rendering error, suzuki toshiya, 2012/06/12
- Re: [ft-devel] PDF text rendering error, Johnson Y. Yan, 2012/06/12
- Re: [ft-devel] PDF text rendering error, suzuki toshiya, 2012/06/12
- Re: [ft-devel] PDF text rendering error, Werner LEMBERG, 2012/06/12
- Message not available
- [ft-devel] FW: PDF text rendering error, Hirwen HARENDAL, 2012/06/12
- Re: [ft-devel] FW: PDF text rendering error, Werner LEMBERG, 2012/06/12
- Re: [ft-devel] FW: PDF text rendering error, Hirwen HARENDAL, 2012/06/12
- Re: [ft-devel] PDF text rendering error, Johnson Y. Yan, 2012/06/13