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Thread: Display problems in FireFox while using zoom

  1. #1

    Default 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:





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

    See the same page after 2nd zoom:




    Picture quality is degrates.


    See the same page after 4th zoom:




    Picture quality is degrates.

    See the same pate after 6th zoom:




    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

  2. #2

    Default Re: Display problems in FireFox while using zoom

    Well,anyone? anyone?

  3. #3
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    Default Re: Display problems in FireFox while using zoom

    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."

  4. #4

    Default Re: Display problems in FireFox while using zoom

    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?

  5. #5

    Default Re: Display problems in FireFox while using zoom

    Here is the example of the same page in Vista

    No zoom, regular page:





    See the same page after 2nd zoom:



    See the same page after 4th zoom:

    http://i128.photobucket.com/albums/p...arus2007/3.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?

  6. #6
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    Default Re: Display problems in FireFox while using zoom

    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.)

  7. #7
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    Default Re: Display problems in FireFox while using zoom

    As said, pictures don't scale well.
    With the exception of vector graphics 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 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.
    Special effects <- KDE 4.2 Showing off
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  8. #8
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    Default Re: Display problems in FireFox while using zoom

    Quote Originally Posted by Axeia View Post
    As said, pictures don't scale well.
    With the exception of vector graphics 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 ...

  9. #9
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    Default Re: Display problems in FireFox while using zoom

    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 )
    Special effects <- KDE 4.2 Showing off
    More KDE -> PINK KDE

  10. #10
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    Default Re: Display problems in FireFox while using zoom

    Quote Originally Posted by Axeia View Post
    (Personally I everything tiny, got fonts set to 8 or smaller, on a 15" 1680*1050 monitor )
    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!!!

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