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List:       koffice-devel
Subject:    Re: KoImageData
From:       Inge Wallin <inge () lysator ! liu ! se>
Date:       2009-07-14 8:52:58
Message-ID: 200907141052.58567.inge () lysator ! liu ! se
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On Tuesday 14 July 2009 07:31:09 Dmitry Kazakov wrote:
> On Tue, Jul 14, 2009 at 2:04 AM, Thomas Zander <zander@kde.org> wrote:
> > On Monday 13. July 2009 23.25.15 Dmitry Kazakov wrote:
> > > I  think loading  shouldn't be  fully  based on  showing. Yes,  it's
> > > better to load images from current page first, but then start a thread
> > > that will preload other images in background.
> > > Maybe you meant it here... =)
> >
> > Why would we want to do that?
> > If I have a 1000 page document it would likely take various minutes to
> > finish
> > this, and it would be cause a huge amount of memory to be used.
> >
> > I think that we should be fine with loading only on demand, as long as
> > its fast enough. And I doubt users will expect that 3000x3000 image to be
> > on screen instantaneously on first show. (everything else will likely
> > show near
> > instantaneous)
>
> Maybe you are right. We shouldn't preload all the images in the document.
> But what about images on previous/next pages? Maybe, preload them at least
> to ease scrolling?
>
> PS:
> I want to have this feature, because sometimes i get quite annoyed when
> ms-word is loading images when i'm scrolling. And it doesn't happen as
> instantaneous as i'd like to :)

That may be a good idea.  Or not.  I don't know.

But if we implement the simple case first, we can always add background 
preloading afterwards if the first attempt is too slow.

	-Inge

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