Re: [OT] Merb-Rails Merge
I'm not bashing Rails, I'm just got bored from the Rails guys and how they underestimate Java culture (the language, frameworks and the performance !!) When I say Rails is a good replacement of PHP, I'm not disdaining them. Both are good for building public web sites (forums, e-commerce) but not for the enterprise IMHO. Too late :) Struts merged with Webworks. This movement is logical since WW was an attempt to enhance Struts but you can't expect Wicket to merge into SpringMVC for example. Erik van Oosten wrote: Please, no Ruby bashing here (or no bashing whatsoever). The Ruby world has many more options besides Rails and Merb. Camping, Sinatra, Ramaze, Nitro just to name a few. Its not such a ridiculous long list as in the Java world, but hey, Ruby has not been popular for that long. Rails should be a good replacement of PHP, nothing more. I think you severely underestimate both. (When given to the right people of course.) I hope Java web frameworks never got merged together. Too late :) Struts merged with Webworks. But I agree; choice is good. Erik. HHB wrote: I hope Java web frameworks never got merged together. Whenever my Rails dudes points toward how many Java has web frameworks and considering this as a bad thing, I smile. I smile because they don't have an option, just Rails. We (Java guys), have request/action frameworks, component-based frameworks, Java2JavaScript frameworks, Hybrid framework. DHH is a jerk, but a smart one. He tries so hard to convince every body on the planet that his Rails is the ultimate framework. Rails should be a good replacement of PHP, nothing more. The funniest thing when I hear Ruby/Rails guys talking about deploying Rails applications in the enterprise, What a good joke !! -- Erik van Oosten http://www.day-to-day-stuff.blogspot.com/ - To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org -- View this message in context: http://www.nabble.com/-OT--Merb-Rails-Merge-tp21151511p21166311.html Sent from the Wicket - User mailing list archive at Nabble.com. - To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org
WebPage for serving binary image data
Hi
I hope I can use wicket to serve image data.
I know I can extend org.apache.wicket.markup.html.image.Image and provide a
DynamicImageResource
but the generated image link is
http://localhost/app/?wicket:interface=:0:customImage::IResourceListener::
The image data is stored in the session and not bookmarkable, which is not
what I want.
I then created an ImagePage extends WebPage and override onBeforeRender() ,
and coding below :
HttpServletResponse response = ((WebResponse)
getWebRequestCycle().getResponse()).getHttpServletResponse();
try
{
response.setContentType(image/png);
OutputStream responseOutputStream = response.getOutputStream();
responseOutputStream.write(myImageBytes);
responseOutputStream.flush();
responseOutputStream.close();
}
catch (IOException e)
{
e.printStackTrace();
}
It works !!! And I can bookmark the image.
But there are warning output :
2008-12-26 02:20:42,919 ERROR wicket.RequestCycle -
org.apache.wicket.Component has not been properly rendered. Something in the
hierarchy of foo.bar.ImagePage has not called super.onBeforeRender() in the
override of onBeforeRender() method
java.lang.IllegalStateException: org.apache.wicket.Component has not been
properly rendered. Something in the hierarchy of foo.bar.ImagePage has not
called super.onBeforeRender() in the override of onBeforeRender() method
at
org.apache.wicket.Component.internalBeforeRender(Component.java:1006)
at org.apache.wicket.Component.beforeRender(Component.java:1034)
at org.apache.wicket.Component.prepareForRender(Component.java:2160)
Is this the standard way of outputing binary data ?
If not , what is the better way (wicket 1.3.5) ?
thanks.
Re: WebPage for serving binary image data
Search the list, use either a resource or a servlet are the conclusion...
Like so :
package zeuzgroup.web.icons;
import org.apache.log4j.Logger;
import org.apache.wicket.AttributeModifier;
import org.apache.wicket.ResourceReference;
import org.apache.wicket.markup.html.image.Image;
import org.apache.wicket.model.Model;
import zeuzgroup.web.application.WicketApplication;
public class Icons {
private static org.apache.log4j.Logger log =
Logger.getLogger(Icons.class);
/**
* Call this when application loads
*
* @param wicketApp
*/
public static void LoadImages() {
for (IconType iconType : IconType.values()) {
getResource(iconType);
}
}
public static ResourceReference getResource(IconType iconType) {
ResourceReference iconRef = new ResourceReference(Icons.class,
iconType.getName());
iconRef.bind(WicketApplication.get());
log.debug(binding icon to: + iconType.getName());
return iconRef;
}
public static Image getImageForIcon(String id, IconType iconType) {
log.debug(getting image for: + iconType.getName());
ResourceReference resource = new
ResourceReference(Icons.class,iconType.getName());
if (resource == null) {
log.error(got null resource for : + iconType.getName()
+ Will try to build new);
resource = getResource(iconType);
}
Image image = new Image(id, resource);
image.add(new AttributeModifier(alt, true, new Model(iconType
.getDescription(;
image.add(new AttributeModifier(title, true, new Model(iconType
.getDescription(;
return image;
}
public enum IconType {
CONCERT(kguitar.png, Concert), MUSIC(music.png, Music),
MONEY(
money.png, Money), INVITATION(page_white_text.png,
Invitation), MONEY_ADD(money_add.png, Money Add), NEW(
new.png, New), DOOR_OPEN(door_open.png, Open),
USERS(
system-users.png, Users), DRINK(drink.png,
Drink), RAINBOW(
rainbow.png, Rainbow), LINK(link.png, Link),
NOPICTURE(nopicture.png,No Picture);
private IconType(String name, String description) {
this.description = description;
this.name = name;
}
private String description;
private String name;
public String getDescription() {
return description;
}
public String getName() {
return this.name;
}
}
}
smallufo wrote:
Hi
I hope I can use wicket to serve image data.
I know I can extend org.apache.wicket.markup.html.image.Image and provide a
DynamicImageResource
but the generated image link is
http://localhost/app/?wicket:interface=:0:customImage::IResourceListener::
The image data is stored in the session and not bookmarkable, which is not
what I want.
I then created an ImagePage extends WebPage and override onBeforeRender() ,
and coding below :
HttpServletResponse response = ((WebResponse)
getWebRequestCycle().getResponse()).getHttpServletResponse();
try
{
response.setContentType(image/png);
OutputStream responseOutputStream = response.getOutputStream();
responseOutputStream.write(myImageBytes);
responseOutputStream.flush();
responseOutputStream.close();
}
catch (IOException e)
{
e.printStackTrace();
}
It works !!! And I can bookmark the image.
But there are warning output :
2008-12-26 02:20:42,919 ERROR wicket.RequestCycle -
org.apache.wicket.Component has not been properly rendered. Something in the
hierarchy of foo.bar.ImagePage has not called super.onBeforeRender() in the
override of onBeforeRender() method
java.lang.IllegalStateException: org.apache.wicket.Component has not been
properly rendered. Something in the hierarchy of foo.bar.ImagePage has not
called super.onBeforeRender() in the override of onBeforeRender() method
at
org.apache.wicket.Component.internalBeforeRender(Component.java:1006)
at org.apache.wicket.Component.beforeRender(Component.java:1034)
at org.apache.wicket.Component.prepareForRender(Component.java:2160)
Is this the standard way of outputing binary data ?
If not , what is the better way (wicket 1.3.5) ?
thanks.
-
To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org
For additional commands, e-mail: users-h...@wicket.apache.org
Re: [OT] wicket users around the world
Seattle, WA USA i just finished writing a foreword for a Japanese book on Wicket i'm constantly amazed to see how far Wicket is spreading in the world. i've been invited to holland twice now (deventer and utrecht) and have clients in norway and new zealand. and i suspect there will be more travel in my future at this rate! merry xmas everyone! best, jon francisco treacy-2 wrote: to know a little bit more of our great (and vast) community, i was just wondering if you're keen on sharing where you come from and/or where you work with wicket... for instance, here argentinian/belgian working with wicket in antibes, france francisco - To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org -- View this message in context: http://www.nabble.com/-OT--wicket-users-around-the-world-tp20962108p21169581.html Sent from the Wicket - User mailing list archive at Nabble.com. - To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org
Submitting form via ajax using wicket tester
Hello, I'm new to wicket and have been struggling with this problem for a few hours now and any help is greatly appreciated. I created a form with ajaxbuttons for submit and cancel. When I try to submit the form via the FormTester, it does a regular submit instead of an ajax submit and hence the call back methods in my ajaxButton, the onError and onSubmit are never getting called. I have also tried the executeAjaxEvent with onclick but this also does not seem to be calling the callback methods Has anyone else run into this kind of issue or am I doing something totally wrong here. Thanks, John Lasher.
Re: WebPage for serving binary image data
ResourceReference reference;
WebApplication.mountSharedResource(/path/to/my/image,
reference.getSharedResourceKey())
smallufo wrote:
Hi
I hope I can use wicket to serve image data.
I know I can extend org.apache.wicket.markup.html.image.Image and provide
a
DynamicImageResource
but the generated image link is
http://localhost/app/?wicket:interface=:0:customImage::IResourceListener::
The image data is stored in the session and not bookmarkable, which is not
what I want.
I then created an ImagePage extends WebPage and override onBeforeRender()
,
and coding below :
HttpServletResponse response = ((WebResponse)
getWebRequestCycle().getResponse()).getHttpServletResponse();
try
{
response.setContentType(image/png);
OutputStream responseOutputStream = response.getOutputStream();
responseOutputStream.write(myImageBytes);
responseOutputStream.flush();
responseOutputStream.close();
}
catch (IOException e)
{
e.printStackTrace();
}
It works !!! And I can bookmark the image.
But there are warning output :
2008-12-26 02:20:42,919 ERROR wicket.RequestCycle -
org.apache.wicket.Component has not been properly rendered. Something in
the
hierarchy of foo.bar.ImagePage has not called super.onBeforeRender() in
the
override of onBeforeRender() method
java.lang.IllegalStateException: org.apache.wicket.Component has not been
properly rendered. Something in the hierarchy of foo.bar.ImagePage has not
called super.onBeforeRender() in the override of onBeforeRender() method
at
org.apache.wicket.Component.internalBeforeRender(Component.java:1006)
at org.apache.wicket.Component.beforeRender(Component.java:1034)
at
org.apache.wicket.Component.prepareForRender(Component.java:2160)
Is this the standard way of outputing binary data ?
If not , what is the better way (wicket 1.3.5) ?
thanks.
--
View this message in context:
http://www.nabble.com/WebPage-for-serving-binary-image-data-tp21169289p21169962.html
Sent from the Wicket - User mailing list archive at Nabble.com.
-
To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org
For additional commands, e-mail: users-h...@wicket.apache.org
Re: WebPage for serving binary image data
hmm... this really is a bit harder than it ought to be.
below is a url encoding strategy and a sub-classable auto-mounting resource
that makes this a lot easier. you can modify to suit your needs.
the use case looks like:
// This dynamically rendered resource will auto-mount itself using the
path
and resource name given
private static final MountedDynamicImageResource redbox = new
MountedDynamicImageResource(
/images/redbox, redbox, 100, 100) {
private static final long serialVersionUID =
1021758684732149991L;
@Override
protected boolean render(Graphics2D graphics) {
graphics.setColor(Color.RED);
graphics.fillRect(0, 0, getWidth(), getHeight());
return true;
}
};
MyPage() {
add(redbox.getImage());
}
the code for MountedDynamicImageResource looks like:
import java.awt.Graphics2D;
import java.util.HashMap;
import java.util.Map;
import org.apache.wicket.ResourceReference;
import org.apache.wicket.markup.html.image.Image;
import
org.apache.wicket.markup.html.image.resource.RenderedDynamicImageResource;
import org.apache.wicket.protocol.http.WebApplication;
public abstract class MountedDynamicImageResource extends
RenderedDynamicImageResource {
private static final long serialVersionUID = -9117628603222075688L;
private static final MapClass? extends MountedDynamicImageResource,
Boolean mounted = new HashMapClass? extends MountedDynamicImageResource,
Boolean();
private final String name;
public MountedDynamicImageResource(final String path, final String name,
int width, int height) {
this(path, name, width, height, png);
}
public MountedDynamicImageResource(final String path, final String name,
int width, int height, String format) {
super(width, height, format);
this.name = name;
synchronized (mounted) {
if (mounted.get(getClass()) == null) {
mounted.put(getClass(), Boolean.TRUE);
WebApplication.get().getSharedResources().add(getClass(), name,
getLocale(), null, this);
WebApplication.get().mount(
new
MountedResourceRequestTargetUrlCodingStrategy(path
+ . + format,
getClass(), name));
}
}
}
public Image getImage() {
return new Image(name, new ResourceReference(getClass(), name));
}
/**
* {...@inheritdoc}
*/
@Override
protected abstract boolean render(Graphics2D graphics);
}
and the url coding strategy:
import org.apache.wicket.IRequestTarget;
import org.apache.wicket.request.RequestParameters;
import
org.apache.wicket.request.target.coding.AbstractRequestTargetUrlCodingStrategy;
import
org.apache.wicket.request.target.resource.ISharedResourceRequestTarget;
import
org.apache.wicket.request.target.resource.SharedResourceRequestTarget;
public class MountedResourceRequestTargetUrlCodingStrategy extends
AbstractRequestTargetUrlCodingStrategy {
private String keyPrefix;
public MountedResourceRequestTargetUrlCodingStrategy(String mountPath,
Class? scope) {
this(mountPath, scope, mountPath.substring(1));
}
public MountedResourceRequestTargetUrlCodingStrategy(String mountPath,
Class? scope, String namePrefix) {
super(mountPath);
this.keyPrefix = scope.getName() + / + namePrefix;
}
public IRequestTarget decode(RequestParameters requestParameters) {
String name = requestParameters.getPath().substring(
getMountPath().length());
requestParameters.setResourceKey(keyPrefix + name);
return new SharedResourceRequestTarget(requestParameters);
}
public CharSequence encode(IRequestTarget requestTarget) {
String key = ((ISharedResourceRequestTarget) requestTarget)
.getResourceKey();
return getMountPath() + key.substring(keyPrefix.length());
}
public boolean matches(IRequestTarget requestTarget) {
if (!(requestTarget instanceof ISharedResourceRequestTarget))
return false;
String key = ((ISharedResourceRequestTarget) requestTarget)
.getResourceKey();
return key.startsWith(keyPrefix);
Re: WebPage for serving binary image data
Take a look at Wicket's shared resources if you need a stable URL.
You may get some ideas
http://www.nabble.com/Re%3A-Mounting-shared-resources-p15236047.html here
too.
Regards - Cemal
http://www.jWeekend.co.uk jWeekend
smallufo wrote:
Hi
I hope I can use wicket to serve image data.
I know I can extend org.apache.wicket.markup.html.image.Image and provide
a
DynamicImageResource
but the generated image link is
http://localhost/app/?wicket:interface=:0:customImage::IResourceListener::
The image data is stored in the session and not bookmarkable, which is not
what I want.
I then created an ImagePage extends WebPage and override onBeforeRender()
,
and coding below :
HttpServletResponse response = ((WebResponse)
getWebRequestCycle().getResponse()).getHttpServletResponse();
try
{
response.setContentType(image/png);
OutputStream responseOutputStream = response.getOutputStream();
responseOutputStream.write(myImageBytes);
responseOutputStream.flush();
responseOutputStream.close();
}
catch (IOException e)
{
e.printStackTrace();
}
It works !!! And I can bookmark the image.
But there are warning output :
2008-12-26 02:20:42,919 ERROR wicket.RequestCycle -
org.apache.wicket.Component has not been properly rendered. Something in
the
hierarchy of foo.bar.ImagePage has not called super.onBeforeRender() in
the
override of onBeforeRender() method
java.lang.IllegalStateException: org.apache.wicket.Component has not been
properly rendered. Something in the hierarchy of foo.bar.ImagePage has not
called super.onBeforeRender() in the override of onBeforeRender() method
at
org.apache.wicket.Component.internalBeforeRender(Component.java:1006)
at org.apache.wicket.Component.beforeRender(Component.java:1034)
at
org.apache.wicket.Component.prepareForRender(Component.java:2160)
Is this the standard way of outputing binary data ?
If not , what is the better way (wicket 1.3.5) ?
thanks.
--
View this message in context:
http://www.nabble.com/WebPage-for-serving-binary-image-data-tp21169289p21171044.html
Sent from the Wicket - User mailing list archive at Nabble.com.
-
To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org
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Re: WebPage for serving binary image data
There was also just a new strategy added in 1.4 (I know you're on 1.3.5 -
but just so you or others are aware of it) for creating very nice URLs for
resources. See this commit:
http://fisheye6.atlassian.com/changelog/wicket/?cs=729078
--
Jeremy Thomerson
http://www.wickettraining.com
On Thu, Dec 25, 2008 at 7:18 PM, jWeekend jweekend_for...@cabouge.comwrote:
Take a look at Wicket's shared resources if you need a stable URL.
You may get some ideas
http://www.nabble.com/Re%3A-Mounting-shared-resources-p15236047.html here
too.
Regards - Cemal
http://www.jWeekend.co.uk http://www.jweekend.co.uk/ jWeekend
smallufo wrote:
Hi
I hope I can use wicket to serve image data.
I know I can extend org.apache.wicket.markup.html.image.Image and provide
a
DynamicImageResource
but the generated image link is
http://localhost/app/?wicket:interface=:0:customImage::IResourceListener
::
The image data is stored in the session and not bookmarkable, which is
not
what I want.
I then created an ImagePage extends WebPage and override onBeforeRender()
,
and coding below :
HttpServletResponse response = ((WebResponse)
getWebRequestCycle().getResponse()).getHttpServletResponse();
try
{
response.setContentType(image/png);
OutputStream responseOutputStream = response.getOutputStream();
responseOutputStream.write(myImageBytes);
responseOutputStream.flush();
responseOutputStream.close();
}
catch (IOException e)
{
e.printStackTrace();
}
It works !!! And I can bookmark the image.
But there are warning output :
2008-12-26 02:20:42,919 ERROR wicket.RequestCycle -
org.apache.wicket.Component has not been properly rendered. Something in
the
hierarchy of foo.bar.ImagePage has not called super.onBeforeRender() in
the
override of onBeforeRender() method
java.lang.IllegalStateException: org.apache.wicket.Component has not been
properly rendered. Something in the hierarchy of foo.bar.ImagePage has
not
called super.onBeforeRender() in the override of onBeforeRender() method
at
org.apache.wicket.Component.internalBeforeRender(Component.java:1006)
at org.apache.wicket.Component.beforeRender(Component.java:1034)
at
org.apache.wicket.Component.prepareForRender(Component.java:2160)
Is this the standard way of outputing binary data ?
If not , what is the better way (wicket 1.3.5) ?
thanks.
--
View this message in context:
http://www.nabble.com/WebPage-for-serving-binary-image-data-tp21169289p21171044.html
Sent from the Wicket - User mailing list archive at Nabble.com.
-
To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org
For additional commands, e-mail: users-h...@wicket.apache.org
Re: WebPage for serving binary image data
Well , What I need is parsing URL and generating a corresponding image from BufferedImage , not a bookmarkable link to internal file resource... for example : http://localhost/app/myImage/text/Hello/width/500 This will generate a 500x500 png , containing a Hello String.
Re: WebPage for serving binary image data
I spent a while playing with this, and indeed - it is much more difficult
than it should be (or I missed something that one of the core devs can point
out. I really hope one of them can review this and point me to an easier
way. But in the meantime, this should work for you.
First, let's start with the basics. In your web application class, you'll
add a shared resource and mount it to whatever path you want:
public static final String IMAGE_KEY = jrtimage.intern();
@Override
protected void init() {
super.init();
getSharedResources().add(IMAGE_KEY, new MyImage());
mountSharedResource(foo, new
ResourceReference(IMAGE_KEY).getSharedResourceKey());
}
Then, you can include it in your page:
JAVA: add(new Image(img, new
ResourceReference(WicketApplication.IMAGE_KEY)));
HTML: img wicket:id=img /
Okay, so what was that MyImage? It is the class that creates your dynamic
image. Read the long comments in the class explaining the nuances of doing
it this way.
private static class MyImage extends DynamicImageResource {
private static final long serialVersionUID = 1L;
ThreadLocalString mText = new ThreadLocalString();
ThreadLocalInteger mWidth = new ThreadLocalInteger();
@Override
public IResourceStream getResourceStream() {
// see note below on why we get parameters in this method
int width = 300;
String text = Hello World!;
String w = ((String[]) getParameters().get(width))[0];
if (w != null .equals(w.trim()) == false) {
try {
width = Integer.parseInt(w);
} catch(NumberFormatException nfe) {
//no-op
}
}
String t = ((String[]) getParameters().get(text))[0];
if (t != null .equals(t.trim()) == false) {
text = t;
}
mText.set(text);
mWidth.set(width);
return super.getResourceStream();
}
@Override
protected byte[] getImageData() {
/*
Unfortunately by the time we get here, the request target has already
been switched, and is no longer an instance of
ISharedResourceRequestTarget
and the getParameters() method no longer returns any parameters,
presumably
because the request target has been switched to a
ResourceStreamRequestTarget
Therefore, we must override getResourceStream above (while params
still available)
so that we can get the parameters there and store them in a
ThreadLocal
NOTE: I haven't tested the ThreadLocal here at all. Presumably it
will be okay.
I don't think you could use regular member fields because multiple
requests
could be operating on this object at the same time - I'm pretty sure,
but haven't
double checked.
*/
BufferedImage img = new BufferedImage(mWidth.get(), 100,
BufferedImage.TYPE_INT_RGB);
Graphics gr = img.createGraphics();
gr.setColor(Color.BLACK);
gr.fillRect(0, 0, mWidth.get(), 100);
gr.setFont(new Font(Arial, Font.PLAIN, 16));
gr.setColor(Color.WHITE);
gr.drawString(mText.get(), 25, 25);
gr.drawString(Width: + mWidth.get(), 25, 45);
mText.set(null);
mWidth.set(null);
return toImageData(img);
}
}
--
Jeremy Thomerson
http://www.wickettraining.com
On Thu, Dec 25, 2008 at 11:03 PM, smallufo small...@gmail.com wrote:
Well ,
What I need is parsing URL and generating a corresponding image from
BufferedImage ,
not a bookmarkable link to internal file resource...
for example :
http://localhost/app/myImage/text/Hello/width/500
This will generate a 500x500 png , containing a Hello String.
Re: WebPage for serving binary image data
Oh, sorry, mean to include that if you add this to a quickstart, you can
test with URL:
http://localhost:8080/foo
http://localhost:8080/foo?text=fffwidth=200
--
Jeremy Thomerson
http://www.wickettraining.com
On Fri, Dec 26, 2008 at 12:48 AM, Jeremy Thomerson
jer...@wickettraining.com wrote:
I spent a while playing with this, and indeed - it is much more difficult
than it should be (or I missed something that one of the core devs can point
out. I really hope one of them can review this and point me to an easier
way. But in the meantime, this should work for you.
First, let's start with the basics. In your web application class, you'll
add a shared resource and mount it to whatever path you want:
public static final String IMAGE_KEY = jrtimage.intern();
@Override
protected void init() {
super.init();
getSharedResources().add(IMAGE_KEY, new MyImage());
mountSharedResource(foo, new
ResourceReference(IMAGE_KEY).getSharedResourceKey());
}
Then, you can include it in your page:
JAVA: add(new Image(img, new
ResourceReference(WicketApplication.IMAGE_KEY)));
HTML: img wicket:id=img /
Okay, so what was that MyImage? It is the class that creates your
dynamic image. Read the long comments in the class explaining the nuances
of doing it this way.
private static class MyImage extends DynamicImageResource {
private static final long serialVersionUID = 1L;
ThreadLocalString mText = new ThreadLocalString();
ThreadLocalInteger mWidth = new ThreadLocalInteger();
@Override
public IResourceStream getResourceStream() {
// see note below on why we get parameters in this method
int width = 300;
String text = Hello World!;
String w = ((String[]) getParameters().get(width))[0];
if (w != null .equals(w.trim()) == false) {
try {
width = Integer.parseInt(w);
} catch(NumberFormatException nfe) {
//no-op
}
}
String t = ((String[]) getParameters().get(text))[0];
if (t != null .equals(t.trim()) == false) {
text = t;
}
mText.set(text);
mWidth.set(width);
return super.getResourceStream();
}
@Override
protected byte[] getImageData() {
/*
Unfortunately by the time we get here, the request target has already
been switched, and is no longer an instance of
ISharedResourceRequestTarget
and the getParameters() method no longer returns any parameters,
presumably
because the request target has been switched to a
ResourceStreamRequestTarget
Therefore, we must override getResourceStream above (while params
still available)
so that we can get the parameters there and store them in a
ThreadLocal
NOTE: I haven't tested the ThreadLocal here at all. Presumably it
will be okay.
I don't think you could use regular member fields because multiple
requests
could be operating on this object at the same time - I'm pretty sure,
but haven't
double checked.
*/
BufferedImage img = new BufferedImage(mWidth.get(), 100,
BufferedImage.TYPE_INT_RGB);
Graphics gr = img.createGraphics();
gr.setColor(Color.BLACK);
gr.fillRect(0, 0, mWidth.get(), 100);
gr.setFont(new Font(Arial, Font.PLAIN, 16));
gr.setColor(Color.WHITE);
gr.drawString(mText.get(), 25, 25);
gr.drawString(Width: + mWidth.get(), 25, 45);
mText.set(null);
mWidth.set(null);
return toImageData(img);
}
}
--
Jeremy Thomerson
http://www.wickettraining.com
On Thu, Dec 25, 2008 at 11:03 PM, smallufo small...@gmail.com wrote:
Well ,
What I need is parsing URL and generating a corresponding image from
BufferedImage ,
not a bookmarkable link to internal file resource...
for example :
http://localhost/app/myImage/text/Hello/width/500
This will generate a 500x500 png , containing a Hello String.
