On Mon, Jul 08, 2002 at 03:18:26PM +0100, Angus Leeming wrote:
> I don't think you're wrong. I'd just like to implement it so that the Inset
> does as little as possible. I think I see how we'd do this, but I need your
> help to turn it into working code.
>
> The plan
> =======
> 1. Don't load all image files once they are converted.
> 2. insets ascertain whether they should use the previewed image with
>
> void InsetFormula::draw(BufferView * bv, LyXFont const & font,
> int y, float & xx, bool) const
> {
> if (preview_->usePreview()) {
> pi.pain.image(x + 1, y - a + 1, w - 2, h - 2,
> *(preview_->pimage_->image()));
> ...
> }
Fine.
> If we modify this usePreview call, we can use that to invode startLoading,
> albeit without the inset knowing anything about this.
Ok.
> [...]
> So, we already have the mechanism to trigger the loading of the image. Just
> modify PreviewLoader::preview to something like:
Fine.
> void PreviewImage::checkVisibility(Inset * inset)
> {
> if (!inset || iloader_->status() != WaitingToLoad)
> return;
>
> if (!inset->isVisible())
> return;
>
> image->startLoading();
> }
>
>
> So,, Jürgen, what should I use for "inset->isVisible()". I have a Buffer & at
> my disposal.
Ah... good that you are not asking me.
Andre'
--
Those who desire to give up Freedom in order to gain Security,
will not have, nor do they deserve, either one. (T. Jefferson)
