[poppler] (no subject)

[Albert Astals Cid]

A Dimecres, 25 d'agost de 2010, mpsuzuki at hiroshima-u.ac.jp va escriure:
> Hi,
> 
> Please post with appropriate Subject, I've overlooked
> your post...
> 
> On Wed, 25 Aug 2010 01:29:45 +0800 (CST)
> 
> ddreamer at ms93.url.com.tw wrote:
> >So, how can I fix poppler on my computer?
> >Or do I need to wait until the next release of poppler?
> 
> About your own solution, there are several ways.
> 
> 1) Modify application personally.
> 
> This is Cobra suggestion for Qt4 application. Although
> poppler-qt4 has a switch to enable hinting in all fonts
> in a document (disabled by default), Okular does not
> touch the switch. So the insertion of the enabling of
> the switch will improve the quality of Okular result
> for PDF including MingLiU.

That is giving the user the responsability of making things work, as a last 
resort is acceptable but not the best solution in my opinion. In my opinion 
things "should work" without user interaction, and that means that either 
FreeType or poppler need to make "things work" automatically, and in my 
opinion FreeType makes more sense just for the reason that is lower in the 
stack and improvememnts there will mean improvements everywhere, not just in 
poppelr.

Albert

> 
> 2) Modify poppler personally.
> 
> About Evince or poppler-glib based application for GNOME,
> the fix of the application code is insufficient, because
> poppler-glib uses CairoOutputDev that has no switch to
> enable the hinting in all fonts in a document. This is
> contrast with poppler-qt4.
> 
> 2-a) Modify poppler only.
> 
> Also CairoOutputDev disable the hinting by default.
> If you modfy the internal CairoOutputDev to enable
> the hinting always, the quality by all applications
> using CairoOutputDev or poppler-glib shows better
> results for PDF including MingLiU.
> 
> 2-b) Modify both of poppler & application.
> 
> Some people will complain as the hint-enabling makes
> worse result for their favorite fonts, and they will
> insist "hint-enabling in all poppler application is
> overkill, violent solution. it should be restricted
> to specified application".
> 
> At present, both of CairoOutputDev and poppler-glib
> does not have a switch for the applications to enable/
> disable the hinting. My proposal patch adds such switch.
> 
> By the using the switch in the applications (aslike
> Cobra used a switch in poppler-qt4), we can restrict
> the impact to selected applications.
> 
> 3) Modify FreeType2 personally.
> 
> The most overkill and violent solution. Poppler disables
> the hinting by default. If you modify the FreeType2
> to ignore the hint-disabling flag, all applications
> using FreeType2 show better results for MingLiU.
> 
> --
> 
> Which looks best for you?
> 
> Anyway, all of them are "personal solution". If you
> upgrade anything in your computer, you may have to
> rebuild the softwares. Also you will have a difficulty
> to post bug report, because your applications are
> not genuine status anymore.
> 
> Although I think it's unbearable situation for
> Traditional Chinese users that most PDFs generated on
> Microsoft Windows are unreadably broken on GNU/Linux,
> situation, the personal solution should be recognized
> as a temporal fix, and requires endless effort until
> official fix.
> 
> Therefore, I'm trying to propose a fix that can be
> accepted by the maintainers officially.
> 
> Regards,
> mpsuzuki
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