Display problems in FireFox while using zoom

Could someone help me to resolve display issue that I see in openSUSE
11.1?

I used Firefox 3.0.4 but I see the same issue in Opera. What I see is
everything looks normal in Firefox when you get to any webpage. Example
below is a Russian site, but you see the same issue on any page. When
you try to zoom in on the page everything readjust the size (pitures,
fonts),but picture degrates in quality so it is unplesant to see. Here
is an example of a normal page without zoom. It looks normal:

[image:
http://i128.photobucket.com/albums/p191/belarus2007/picture2_regular.png]

Most of the time you can adjust View in FireFox by Zooming in/out (Ctrl
++/ Ctrl – )

See the same page after 2nd zoom:

[image:
http://i128.photobucket.com/albums/p191/belarus2007/picture2_2times.png]

Picture quality is degrates.

See the same page after 4th zoom:

[image:
http://i128.photobucket.com/albums/p191/belarus2007/picture2_4times.png]

Picture quality is degrates.

See the same pate after 6th zoom:
[image:
http://i128.photobucket.com/albums/p191/belarus2007/picture2_6times.png]

As you can see there is no issue with fonts. When you zoom in fonts
adjust and look normal, but picture quality degrades with each zoom.

It is a dual-boot PC with Vista and openSUSE 11/1. I have Nvidia Video
Card GeForce 7900GS with Nvidia Linux driver. The interesting part that
I don’t see a problem on Vista. Firefox zooms in font and pictures and
scales just fine. (no picture quality degradation)

I’d like to find a solution for this zoom/scale issue. I’d like to use
openSUSE,but this thing just drives me nuts and I keep switching back to
Vista that I dislike, but has good FireFox zoom in feature.

Any suggestions? Any soluitons? Have you seen that before?

Thanks


laskagifts

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Well,anyone? anyone?


laskagifts

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The reason for that is simple: the picture is a fixed size and when you
increase the zoom, the image must be zoomed along with it. You’re going
to see the individual pixels – same as if you were to take that same
image, open it in an editor (such as Gimp) and then zoom in on it. This
isn’t a Firefox issue.

Go to that exact same Web page in Windows, open it with Firefox, and
then use “CTRL-+” to zoom. As I recall, earlier versions of Firefox
would increase the text and framing, but leave the images alone. If it
zooms the image along with the rest of the page, though, of course the
image will look “grainy.”


smpoole7

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That is not the case my friend. I’m trying to compare APPLES to APPLES.

The same version of Firefox 3.0.5 in Windows and 3.0.5 in Linux.
Windows zooms in and render pictures just fine, but openSUSE Firefox
degrades the quality.

Anyone else who is not guessing by knows how to solve this issue?


laskagifts

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Here is the example of the same page in Vista

No zoom, regular page:

[image: http://i128.photobucket.com/albums/p191/belarus2007/1.png]

See the same page after 2nd zoom:

[image: http://i128.photobucket.com/albums/p191/belarus2007/2.png]

See the same page after 4th zoom:

http://i128.photobucket.com/albums/p191/belarus2007/3.png

As you can see Firefox in Vista displays images a lot better while
zooming.

The question stans: Does anyone knows how to resolve this issue in
openSUSE 11.1?


laskagifts

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Heh. I’m sorry if you think I’m “guessing.”

Because I had nothing better to do (and arguably need a life at times),
I went into XP. I downloaded Mozilla 3.0.5 for Windows and upgraded to
that version.

Here’s the key: I then set my screen resolution under Windows to the
same thing that I use under Suse (1680 x 1050). When I zoomed, the
pictures became grainy and ugly-looking. I’m not going to bother to post
them here; if you choose not to believe me, that’s fine.

Pixels is pixels. You CANNOT expand a 100x100 pixel image to 200x200,
and then to 400x400, without it becoming increasingly ugly. (At least,
not without some really sophisticated rendering algorithms; maybe
someone makes a plug-in for Mozilla, or an advanced driver for Linux,
that will do this. I’m not aware of one, though.)


smpoole7

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As said, pictures don’t scale well.
With the exception of ’ vector graphics’
(http://www.croczilla.com/svg/samples/) which were designed to do just
that. They can’t display something like a photo though.

Font’s are similar to vector graphics in that they scale well, I think
the image render / scale thing is OS based as I remember a ‘dangerous’
bug in the .jpg implementation of windows affecting nearly everything…
including browsers.

According to ’ this site ’ (http://tinyurl.com/7z4zur) the quality was
upped once, but seeing the date of the article I’m afraid you already
have a version that has the ‘good’ quality.


“-So you’re saying a naked maid ceases to be a maid?
I believe she probably once had the rest of the outfit…-” - Artefact

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Axeia;1926585 Wrote:
> As said, pictures don’t scale well.
> With the exception of ’ vector graphics’
> (http://www.croczilla.com/svg/samples/) which were designed to do just
> that. They can’t display something like a photo though.
>
> Font’s are similar to vector graphics in that they scale well …

Excellent point. I should’ve mentioned that.

Incidentally, I was already familiar with this particular issue, which
is why I responded. In the past, I’ve deliberately kept my resolution
low (1024x768 max) because I have trouble seeing the icons and text at
high resolutions. In fact – gulp – I’ve even excoriated Suse/Sax for
defaulting to the highest possible resolution and I’ve whined about how
hard it is to reduce the rez with some video cards under Linux.

I bought a new wide-screen LCD monitor several days ago and had a brain
storm. (Actually, a “well, duh!” moment.) I finally realized I could
pump up the font and icon sizes to make the desktop acceptable to my old
eyes.

I now have beautiful, delicious-looking fonts and an overall display
that’s a work of art … but yup, in Firefox (or Konqueror, for that
matter, or Internet Explorer under Windows), the images sometimes look
gritty. In fact, the “login” button for this forum is almost unreadable.
It’s a good thing I already know where it’s at … :wink:


smpoole7

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compiz-fusion might actually be more than just eyecandy for you then,
I’ve never found the windows key + mousewheel zooming all that great,
but if you need a ‘closer’ look perhaps it’s of help to you.
(Personally I everything tiny, got fonts set to 8 or smaller, on a 15"
1680*1050 monitor :P)


“-So you’re saying a naked maid ceases to be a maid?
I believe she probably once had the rest of the outfit…-” - Artefact

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Axeia;1926647 Wrote:
> (Personally I everything tiny, got fonts set to 8 or smaller, on a 15"
> 1680*1050 monitor :P)

Ouch! I can’t do that. I’ll be 53 years old on Jan 25th, and my old
Mark 1 eyeballs just can’t squint like that anymore!!! lol!


smpoole7

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I have exactly the same problem. It also affects opera browser.


hujq

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Me too, when I use firefox windows, I zoom (ctrl +) and everything
become larger and clear (images too).But in suse 1.11 images quality
decreases whit zoom (also in firefox)!HELP!!! >:(


MilosGrozni

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Well, the only explanation from community that I got is “just deal with
it!” “Linux is still better” >:(

All I know that on the same PC in Vista Ctrl + works and images
increase and look nice no matter how many times an click Ctrl ++ (
obviously it’s zooms in too much image quality degrades a bit), but in
openSUSE 11 or 11.1 image quality degrades after first Ctrl +. It is
hard to see.

Please don’t tell me it is ok!!! It is NOT! If there is an issue with
openSUSE it needs to be addressed.

I’m still looking for a solution. I would like to use openSUSE, but
just can’t do it without resolving this issue.

Help! Anyone?


laskagifts

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Did you install your graphic card drivers? And what graphic cards are
you using?

I could be telling a whole bunch of nonsense here and I got no source
to back it up… but maybe (again I got nothing to back this up) a
simpler scaling algorithm is used when you don’t install your videocard
drivers resulting in poor image quality.

If you provide some source image accesseable to use both we could see
if the zooming results vary as I don’t think I’m experiencing worse
scaling myself under linux… but I rarely use the feature. (and when you
post a screenshot of the image yourself make sure to save it as png, as
jpeg is not suited for comparing image quality)


‘Special effects’ (http://tiny.cc/Y0T) ← KDE 4.2 Showing off
More KDE → ’ PINK KDE’ (http://tiny.cc/v30h)
‘HQ Pink KDE’ (http://tiny.cc/R4P)

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I provided that info in the first post:

>>>>>It is a dual-boot PC with Vista and openSUSE 11/1. I have Nvidia
Video Card GeForce 7900GS with Nvidia Linux driver.

png or jpg format is not an issue here. I already posted all the
pictures. It is obvious when you compare them. The issue is still there.

Anyone could share picture quality in openSUSE 11.1 with
1 Ctrl ++
2 Ctrl ++
3 Ctrl ++
4 Ctrl ++
5 Ctrl ++

I tested on 4 different PCs inclusing beta SLES 11. Result is the same:
in Firefox 3.0.5 or .6 after zooming using Ctrl ++ quality of images
degrading and after awhile it is painful to watch.

Anyone, anyone on openSUSE side could provide answer to this problem?
Axeia please no more nonsense!


laskagifts

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I added a bug at bugzilla.novell.com

https://bugzilla.novell.com/show_bug.cgi?id=473623

Please add any other comments on that page and Vote to increase
visibility of this bug.


ozhdan

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I have the same problem too and find it very annoying - i’ve browse to
find a fix but the only way to make it a bit better is to use the
firefox extension called No Squint

https://addons.mozilla.org/en-US/firefox/addon/2592

this is a weird problem - it’s only in firefox,the problem doesn’t
occur in Konqueror

if there is a real fix please let me know

(using nvidia 172 drivers / tried with 180 new version > same problem -
geforce 7300 gt)


soundznice

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