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Posted to taglibs-dev@jakarta.apache.org by Lima Marcelo-EML047 <em...@motorola.com> on 2002/04/26 20:17:44 UTC
Image Taglib
Hi everyone,
I don't know if this is the correct place to post this to, as all I see on this list are CVS commits, but I'll give it a try:
I'm developing a tag library for dealing with images. My main motivation was the lack of a PHP-like function getimagesize in JSPs. I always thought this was important if you don't or can't know an image size a priori and don't like your HTML to jump all over the place after the page loads.
So I have the taglib working, I'm just improving it, but it's quick. It uses Marco Schmidt's ImageInfo class ( http://www.geocities.com/marcoschmidt.geo/image-info.html ).
I would like to know if there is similar work being done in the Jakarta project, or if not, if I can contribute this tag to the project.
Regards,
Marcelo
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RE: Image Taglib
Posted by Abey Mullassery <ab...@mullassery.com>.
Hello,
I have developed a prototype with a set of Tags which did work with the
"headless" options.
I would like to add these to the sandbox so that we can finalize on the
framework.
The prototype has support for:-
Scaling
format change (GIF, PNG, JPEG, BMP)
Gray scaling
Border
Text Overlay
Image Overlay
I was just wondering if it can be displayed anywhere so that all developers
could see and discuss.
I can add it to the "sandbox" after I add some documentation and check the
license of distribution of the JAI (Java Advanced Imaging) classes which I
use.
Regards,
Abey M. Mullassery
e: abey@mullassery.com
w: http://www.Mullassery.com
====================================
Live; Don't just exist.
> -----Original Message-----
> From: Henri Yandell [mailto:bayard@generationjava.com]
> Sent: Sunday, April 28, 2002 9:20 PM
> To: Tag Libraries Developers List
> Subject: RE: Image Taglib
>
>
> Hey Abel,
>
> I think people commonly use PJA for this at the moment, and JDK 1.4 comes
> with a headless AWT library of its own.
>
> -Djava.awt.headless=true for jdk 1.4
>
> http://www.eteks.com/pja/en/ for pja.
>
> installing pja is basically a case of grabbing the jars and setting:
>
> -Dawt.toolkit=com.eteks.awt.PJAToolkit
> -Djava.awt.graphicsenv=com.eteks.java2d.PJAGraphicsEnvironment
>
> though you might find you have to deal with setting some fonts as well, I
> found I did for IBM but not for Sun. Not got those flags to hand at the
> moment.
>
> So not having X shoudn't be a problem, just make sure the image taglib
> gives good docs on the headless stuff. WHat's the state of the image
> taglib? I know you were working on it a lot, not heard things for a while.
>
> Hen
>
>
> On Sun, 28 Apr 2002, Abey Mullassery wrote:
>
> >
> > It might be useful.
> > But most of the web servers running on Linux may not have the X-Windows
> > running. In that case the AWT classes may not load (since access to awt
> > package tries to load the native awt shared libs) unless it is
> taken care of
> > otherwise. Please check it.
> >
> > I have developed a set of image loading and manipulation tags using Java
> > Advanced Imaging. But except for loading, an access to the
> java.awt.Graphics
> > Object will require the awt package!
> > I am not sure if an ISP will want to keep the XWindows/ Xvfb up for some
> > image tags. I am thinking of developing a set of native libs as an
> > alternative, which will do all kinds of image loading and manipulation
> > (Written in ANSI C).
> >
> > Any thoughts?
> >
> >
> > Abey M. Mullassery
> > e: abey@mullassery.com
> > w: http://www.Mullassery.com
> > ====================================
> > Live; Don't just exist.
> >
> > > -----Original Message-----
> > > From: Lima Marcelo-EML047 [mailto:eml047@motorola.com]
> > > Sent: Friday, April 26, 2002 11:48 PM
> > > To: 'Tag Libraries Developers List'
> > > Subject: Image Taglib
> > >
> > >
> > > Hi everyone,
> > >
> > > I don't know if this is the correct place to post this to, as all
> > > I see on this list are CVS commits, but I'll give it a try:
> > >
> > > I'm developing a tag library for dealing with images. My main
> > > motivation was the lack of a PHP-like function getimagesize in
> > > JSPs. I always thought this was important if you don't or can't
> > > know an image size a priori and don't like your HTML to jump all
> > > over the place after the page loads.
> > >
> > > So I have the taglib working, I'm just improving it, but it's
> > > quick. It uses Marco Schmidt's ImageInfo class
> >
> > http://www.geocities.com/marcoschmidt.geo/image-info.html ).
> >
> > I would like to know if there is similar work being done in the Jakarta
> > project, or if not, if I can contribute this tag to the project.
> >
> > Regards,
> > Marcelo
> >
> >
> > --
> > To unsubscribe, e-mail:
> > <ma...@jakarta.apache.org>
> > For additional commands, e-mail:
> > <ma...@jakarta.apache.org>
> >
> >
> > --
> > To unsubscribe, e-mail:
<ma...@jakarta.apache.org>
> For additional commands, e-mail:
<ma...@jakarta.apache.org>
>
>
--
To unsubscribe, e-mail:
<ma...@jakarta.apache.org>
For additional commands, e-mail:
<ma...@jakarta.apache.org>
--
To unsubscribe, e-mail: <ma...@jakarta.apache.org>
For additional commands, e-mail: <ma...@jakarta.apache.org>
RE: Image Taglib
Posted by Henri Yandell <ba...@generationjava.com>.
Hey Abel,
I think people commonly use PJA for this at the moment, and JDK 1.4 comes
with a headless AWT library of its own.
-Djava.awt.headless=true for jdk 1.4
http://www.eteks.com/pja/en/ for pja.
installing pja is basically a case of grabbing the jars and setting:
-Dawt.toolkit=com.eteks.awt.PJAToolkit
-Djava.awt.graphicsenv=com.eteks.java2d.PJAGraphicsEnvironment
though you might find you have to deal with setting some fonts as well, I
found I did for IBM but not for Sun. Not got those flags to hand at the
moment.
So not having X shoudn't be a problem, just make sure the image taglib
gives good docs on the headless stuff. WHat's the state of the image
taglib? I know you were working on it a lot, not heard things for a while.
Hen
On Sun, 28 Apr 2002, Abey Mullassery wrote:
>
> It might be useful.
> But most of the web servers running on Linux may not have the X-Windows
> running. In that case the AWT classes may not load (since access to awt
> package tries to load the native awt shared libs) unless it is taken care of
> otherwise. Please check it.
>
> I have developed a set of image loading and manipulation tags using Java
> Advanced Imaging. But except for loading, an access to the java.awt.Graphics
> Object will require the awt package!
> I am not sure if an ISP will want to keep the XWindows/ Xvfb up for some
> image tags. I am thinking of developing a set of native libs as an
> alternative, which will do all kinds of image loading and manipulation
> (Written in ANSI C).
>
> Any thoughts?
>
>
> Abey M. Mullassery
> e: abey@mullassery.com
> w: http://www.Mullassery.com
> ====================================
> Live; Don't just exist.
>
> > -----Original Message-----
> > From: Lima Marcelo-EML047 [mailto:eml047@motorola.com]
> > Sent: Friday, April 26, 2002 11:48 PM
> > To: 'Tag Libraries Developers List'
> > Subject: Image Taglib
> >
> >
> > Hi everyone,
> >
> > I don't know if this is the correct place to post this to, as all
> > I see on this list are CVS commits, but I'll give it a try:
> >
> > I'm developing a tag library for dealing with images. My main
> > motivation was the lack of a PHP-like function getimagesize in
> > JSPs. I always thought this was important if you don't or can't
> > know an image size a priori and don't like your HTML to jump all
> > over the place after the page loads.
> >
> > So I have the taglib working, I'm just improving it, but it's
> > quick. It uses Marco Schmidt's ImageInfo class
>
> http://www.geocities.com/marcoschmidt.geo/image-info.html ).
>
> I would like to know if there is similar work being done in the Jakarta
> project, or if not, if I can contribute this tag to the project.
>
> Regards,
> Marcelo
>
>
> --
> To unsubscribe, e-mail:
> <ma...@jakarta.apache.org>
> For additional commands, e-mail:
> <ma...@jakarta.apache.org>
>
>
> --
> To unsubscribe, e-mail: <ma...@jakarta.apache.org>
> For additional commands, e-mail: <ma...@jakarta.apache.org>
>
>
--
To unsubscribe, e-mail: <ma...@jakarta.apache.org>
For additional commands, e-mail: <ma...@jakarta.apache.org>
RE: Image Taglib
Posted by Abey Mullassery <ab...@mullassery.com>.
It might be useful.
But most of the web servers running on Linux may not have the X-Windows
running. In that case the AWT classes may not load (since access to awt
package tries to load the native awt shared libs) unless it is taken care of
otherwise. Please check it.
I have developed a set of image loading and manipulation tags using Java
Advanced Imaging. But except for loading, an access to the java.awt.Graphics
Object will require the awt package!
I am not sure if an ISP will want to keep the XWindows/ Xvfb up for some
image tags. I am thinking of developing a set of native libs as an
alternative, which will do all kinds of image loading and manipulation
(Written in ANSI C).
Any thoughts?
Abey M. Mullassery
e: abey@mullassery.com
w: http://www.Mullassery.com
====================================
Live; Don't just exist.
> -----Original Message-----
> From: Lima Marcelo-EML047 [mailto:eml047@motorola.com]
> Sent: Friday, April 26, 2002 11:48 PM
> To: 'Tag Libraries Developers List'
> Subject: Image Taglib
>
>
> Hi everyone,
>
> I don't know if this is the correct place to post this to, as all
> I see on this list are CVS commits, but I'll give it a try:
>
> I'm developing a tag library for dealing with images. My main
> motivation was the lack of a PHP-like function getimagesize in
> JSPs. I always thought this was important if you don't or can't
> know an image size a priori and don't like your HTML to jump all
> over the place after the page loads.
>
> So I have the taglib working, I'm just improving it, but it's
> quick. It uses Marco Schmidt's ImageInfo class
http://www.geocities.com/marcoschmidt.geo/image-info.html ).
I would like to know if there is similar work being done in the Jakarta
project, or if not, if I can contribute this tag to the project.
Regards,
Marcelo
--
To unsubscribe, e-mail:
<ma...@jakarta.apache.org>
For additional commands, e-mail:
<ma...@jakarta.apache.org>
--
To unsubscribe, e-mail: <ma...@jakarta.apache.org>
For additional commands, e-mail: <ma...@jakarta.apache.org>