On 10/24/06, Jonathan Rockway <[EMAIL PROTECTED]> wrote:
Cool. Thanks for this lead!
MS IE does not support transparency on PNGs and GIF would mess up the fade badly. This is basically why I opted for server-side processing in order to overlay the shadow using ImageMagik. But perhaps, if I can handle the resizing all in the client, I could generate the faded images only once in the server when the images are first uploaded.
Yes, true.
Ok, anything that you can think of helps! For now, I will stick to the resizing strictly on the client (CSS, JS, etc.) and generate the faded image only once on the server. Since the proprtion is fixed, I can generate a larger proprotional and already cropped image that will scale well with client side coding. I have a time constraint so I think I will go down this path. Again, any ideas are very welcome. As I said to Yuval, when we finish we will release the code to the Catalyst community for evaluation/learning if anyone would be interested.
Thanks,
Alejandro
You can do all of this with CSS (other than pick the algorithm the
browser uses to resize the image). Look at the CSS for HTML Slidy to
see how this is done:
http://www.w3.org/Talks/Tools/Slidy/
Cool. Thanks for this lead!
The fade to black is a bit less obvious, but all you need to do is
overlay a PNG with an alpha channel.
MS IE does not support transparency on PNGs and GIF would mess up the fade badly. This is basically why I opted for server-side processing in order to overlay the shadow using ImageMagik. But perhaps, if I can handle the resizing all in the client, I could generate the faded images only once in the server when the images are first uploaded.
nothingmuch mentions that you might end up with a lot of images, and
this is certainly true. However, if you constrain the aspect ratio, you
won't have nearly as many files.
Yes, true.
If you don't want to constrain the aspect ratio, then you can still be
space efficient (or at least use a constant amount of space for an
infinite number of sizes). There's an algorithm (whose name I can't
recall right now) that can generate good-looking images quickly if you
cache images of size (p,q), (p/2,q/2), (p/4, q/4), etc. (for each aspect
ratio you desire, of course).
I'll let you know if I find a reference online. I was planning on
implementing a catalyst model or controller for storing cached images
anyway, but haven't gotten around to it yet.
Ok, anything that you can think of helps! For now, I will stick to the resizing strictly on the client (CSS, JS, etc.) and generate the faded image only once on the server. Since the proprtion is fixed, I can generate a larger proprotional and already cropped image that will scale well with client side coding. I have a time constraint so I think I will go down this path. Again, any ideas are very welcome. As I said to Yuval, when we finish we will release the code to the Catalyst community for evaluation/learning if anyone would be interested.
Thanks,
Alejandro
Regards,
Jonathan Rockway
--
package JAPH;use Catalyst qw/-Debug/;($;=JAPH)->config(name => do {
$,.=reverse qw[Jonathan tsu rehton lre rekca Rockway][$_].[split //,
";$;"]->[$_].q; ;for 1..4;$,=~s;^.;;;$,});$;->setup;
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