Serious problems with Arabic text rendering

classic Classic list List threaded Threaded
5 messages Options
Hossein Noorikhah Hossein Noorikhah
Reply | Threaded
Open this post in threaded view
|

Serious problems with Arabic text rendering

Hi,

Starting with version LibreOffice 3.6, we had some issues with Arabic text rendering in LibreOffice. These issues got worse starting LO 4.0. I hoped that patches which some developers provided [1], may fix the bugs. But right now I'm using LO v4.1.2.3 and nearly most of the problems that have been fixed in OpenOffice versions prior to 3.0 are now visible again.

For example these are serious and were all fixed prior to OpenOffice 3.0:

1. Text rendering cuts and continues out of the border. (attached picture 1)
2. Kashida placement in wrong position, in the free space between words (attached picture 2)
3. Losing paragraph direction, making RTL paragraph LTR. (attached picture 2)

These not happen for every font, but using some popular fonts, these issues are visible, for example using "Droid Arabic Naskh".

Some users reported that they were forced to downgrade LibreOffice to avoid these issuses. We were working on localization before these problems, but right now it is very important to have a correct rendering engine before continuing UI translation.

Considering the fact that many languages like Persian and Urdu use Arabic script, I think fixing bugs related to Arabic text rendering is important.

Thanks
Hossein


_______________________________________________
LibreOffice mailing list
[hidden email]
http://lists.freedesktop.org/mailman/listinfo/libreoffice

2. wrong.jpg (159K) Download Attachment
1. out.jpg (132K) Download Attachment
testcase.docx (18K) Download Attachment
Khaled Hosny Khaled Hosny
Reply | Threaded
Open this post in threaded view
|

Re: Serious problems with Arabic text rendering

CONTENTS DELETED
The author has deleted this message.
Hossein Noorikhah Hossein Noorikhah
Reply | Threaded
Open this post in threaded view
|

Re: Serious problems with Arabic text rendering

Salaam,

I'm using "Microsoft Windows 7", but other users using "Ubuntu Linux" reported similar problems.

Hossein


2013/10/29 Khaled Hosny <[hidden email]>
On Tue, Oct 29, 2013 at 03:48:01PM +0330, Hossein Noorikhah wrote:
> Hi,
>
> Starting with version LibreOffice 3.6, we had some issues with Arabic text
> rendering in LibreOffice. These issues got worse starting LO 4.0. I hoped
> that patches which some developers provided [1], may fix the bugs. But
> right now I'm using LO v4.1.2.3 and nearly most of the problems that have
> been fixed in OpenOffice versions prior to 3.0 are now visible again.
>
> For example these are serious and were all fixed prior to OpenOffice 3.0:
>
> 1. Text rendering cuts and continues out of the border. (attached picture 1)

On what OS is that?

Regards,
Khaled


_______________________________________________
LibreOffice mailing list
[hidden email]
http://lists.freedesktop.org/mailman/listinfo/libreoffice
Khaled Hosny Khaled Hosny
Reply | Threaded
Open this post in threaded view
|

Re: Serious problems with Arabic text rendering

CONTENTS DELETED
The author has deleted this message.
Hossein Noorikhah Hossein Noorikhah
Reply | Threaded
Open this post in threaded view
|

Re: Serious problems with Arabic text rendering

In reply to this post by Hossein Noorikhah
Hi,

These problems are still there in today builds of latest LibreOffice pre-release (4.4.0~rc2). I'm using Ubuntu Linux with official prerelease PPA.

The most problematic problem is the justification bug, reported here:

The attached ODT file is a simple minimal working sample to show visible justification bug in Libreoffice.

Is there a chance than someone can help fixing this issue? Please note that this bug existed in OpenOffice and it was fixed, and now OpenOffice works just fine with this sample, but Libreoffice creates bad results.

2013-10-29 15:48 GMT+03:30 Hossein Noorikhah <[hidden email]>:
Hi,

Starting with version LibreOffice 3.6, we had some issues with Arabic text rendering in LibreOffice. These issues got worse starting LO 4.0. I hoped that patches which some developers provided [1], may fix the bugs. But right now I'm using LO v4.1.2.3 and nearly most of the problems that have been fixed in OpenOffice versions prior to 3.0 are now visible again.

For example these are serious and were all fixed prior to OpenOffice 3.0:

1. Text rendering cuts and continues out of the border. (attached picture 1)
2. Kashida placement in wrong position, in the free space between words (attached picture 2)
3. Losing paragraph direction, making RTL paragraph LTR. (attached picture 2)

These not happen for every font, but using some popular fonts, these issues are visible, for example using "Droid Arabic Naskh".

Some users reported that they were forced to downgrade LibreOffice to avoid these issuses. We were working on localization before these problems, but right now it is very important to have a correct rendering engine before continuing UI translation.

Considering the fact that many languages like Persian and Urdu use Arabic script, I think fixing bugs related to Arabic text rendering is important.

Thanks
Hossein


_______________________________________________
LibreOffice mailing list
[hidden email]
http://lists.freedesktop.org/mailman/listinfo/libreoffice

Test.odt (14K) Download Attachment
Test-ooo.pdf (22K) Download Attachment
Test-libreoffice.pdf (22K) Download Attachment