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Posted to batik-users@xmlgraphics.apache.org by janice tan <ta...@gmail.com> on 2006/04/25 17:14:08 UTC
using Java to write functions in SVG
hi,
am trying to implement a java application and have been trying to make use of the batik plugin with eclipse. i have been sucessful in creating a svg document for a bar chart and adding it to a JSVGCanvas to display. however, i would like to make my svg interactive and would need to include some mouseevents, linking and even loading anotehr svg on top.
i have previously managed to do this in javascript. but am not sure if its possible through java.
thanks
Re: using Java to write functions in SVG
Posted by Janice Tan <ta...@gmail.com>.
okies think i get it thanks...
On 4/27/06, thomas.deweese@kodak.com <th...@kodak.com> wrote:
>
> Hi Janice,
>
> I suggest you read the DOM Events specification:
> http://www.w3.org/TR/2000/REC-DOM-Level-2-Events-20001113/events.html
>
> "Janice Tan" <ta...@gmail.com> wrote on 04/25/2006 10:21:38 PM:
>
> > i have another class to create the SVGDocument. in this class, i use a
> for
> > loop to create 'rect' elements for the bar segments.
> > Element e = document.createElementNS(svgNS, "rect");
> > e.setAttributeNS(null, "x", "xPos");
> > ....
> > root.appendChild(e);
> >
> > based on ur solution, does it mean that i would have to do something
> like
> > assign an id to the rect element and then:
>
> If you want you can attach the listener directly to the rects as
> you are creating them. The important part of the whole thing is that
> essentially all SVG elements implement the 'EventTarget' interface so
> you can call 'addEventListener(String type, EventListener l, boolean
> useCapture)'
> on them to register to have your listener object's handleEvent method
> called
> when an event of type 'type' occurs with that element.
>
> > also i would have to create another class for the DisplayAbout
> EventListener.
> > does this mean that for each event, i have to create a separate class?
> or can
> > i put them all into a single class?
>
> You can have a single class and check the 'type' member of the Event
> object
> passed to know why you're listener is called, but I typically register
> different listeners for different event types.
>
> It can also be useful to add custom attributes to elements that your
> listener can use to decide what action to take.
>
> > On 4/26/06, Lewis Keen <ye...@gmail.com> wrote:
> > Janice,
> >
> > In my project (Texas Hold'em poker game) I have an about button
> > element called "about" that has the register listener following line
> > in Java:
> >
> > pokerTable.registerListener("about","click",new DisplayAbout());
> >
> > which calls the following method in my PokerTable (Main GUI) class:
> >
> > public void registerListener(String element,String
> > action,EventListener listener)
> > {
> > try
> > {
> > Element elt = doc.getElementById(element);
> > EventTarget t = (EventTarget)elt;
> > t.addEventListener(action,listener,false);
> > }catch(Exception ex)
> > {
> > System.out.println("Error whilst registering
> Listener:
> > "+ex.getMessage());
> > }
> > }
> >
> > then my DisplayAbout EventListener does this:
> >
> > public class DisplayAbout implements EventListener {
> > public void handleEvent(Event evt) {
> > Thread displayThread=new Thread(){
> > public void run(){
> > try{
> > SplashScreen splash=new SplashScreen();
> > splash.setVisible(true);
> > }
> > catch (Exception ex)
> > {
> > System.out.println("An error with the poker client
> has
> > occured: "+ex.getMessage());
> > }
> > }
> > };
> > displayThread.start();
> > }
> > }
> >
> > So basically my method assigns a click EventListener on an XML element
> > in the document.
> >
> > Rinse and repeat for other elements/eventlisteners. I love how simple
> > and consequently how quick it is to expand :)
> >
> > Hope this helps,
> >
> > Lewis Keen
> > Final Year, Software Engineering
> > De Montfort University, Leicester
> >
> > On 4/25/06, janice tan < tan.janice@gmail.com> wrote:
> > >
> > > hi,
> > >
> > > am trying to implement a java application and have been trying to make
> use
> > > of the batik plugin with eclipse. i have been sucessful in creating a
> svg
> > > document for a bar chart and adding it to a JSVGCanvas to display.
> however,
> > > i would like to make my svg interactive and would need to include some
> > > mouseevents, linking and even loading anotehr svg on top.
> > > i have previously managed to do this in javascript. but am not sure if
> its
> > > possible through java.
> > >
> > > thanks
> >
> > ---------------------------------------------------------------------
> > To unsubscribe, e-mail: batik-users-unsubscribe@xmlgraphics.apache.org
> > For additional commands, e-mail: batik-users-help@xmlgraphics.apache.org
>
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: batik-users-unsubscribe@xmlgraphics.apache.org
> For additional commands, e-mail: batik-users-help@xmlgraphics.apache.org
>
>
Re: using Java to write functions in SVG
Posted by th...@kodak.com.
Hi Janice,
I suggest you read the DOM Events specification:
http://www.w3.org/TR/2000/REC-DOM-Level-2-Events-20001113/events.html
"Janice Tan" <ta...@gmail.com> wrote on 04/25/2006 10:21:38 PM:
> i have another class to create the SVGDocument. in this class, i use a
for
> loop to create 'rect' elements for the bar segments.
> Element e = document.createElementNS(svgNS, "rect");
> e.setAttributeNS(null, "x", "xPos");
> ....
> root.appendChild(e);
>
> based on ur solution, does it mean that i would have to do something
like
> assign an id to the rect element and then:
If you want you can attach the listener directly to the rects as
you are creating them. The important part of the whole thing is that
essentially all SVG elements implement the 'EventTarget' interface so
you can call 'addEventListener(String type, EventListener l, boolean
useCapture)'
on them to register to have your listener object's handleEvent method
called
when an event of type 'type' occurs with that element.
> also i would have to create another class for the DisplayAbout
EventListener.
> does this mean that for each event, i have to create a separate class?
or can
> i put them all into a single class?
You can have a single class and check the 'type' member of the Event
object
passed to know why you're listener is called, but I typically register
different listeners for different event types.
It can also be useful to add custom attributes to elements that your
listener can use to decide what action to take.
> On 4/26/06, Lewis Keen <ye...@gmail.com> wrote:
> Janice,
>
> In my project (Texas Hold'em poker game) I have an about button
> element called "about" that has the register listener following line
> in Java:
>
> pokerTable.registerListener("about","click",new DisplayAbout());
>
> which calls the following method in my PokerTable (Main GUI) class:
>
> public void registerListener(String element,String
> action,EventListener listener)
> {
> try
> {
> Element elt = doc.getElementById(element);
> EventTarget t = (EventTarget)elt;
> t.addEventListener(action,listener,false);
> }catch(Exception ex)
> {
> System.out.println("Error whilst registering
Listener:
> "+ex.getMessage());
> }
> }
>
> then my DisplayAbout EventListener does this:
>
> public class DisplayAbout implements EventListener {
> public void handleEvent(Event evt) {
> Thread displayThread=new Thread(){
> public void run(){
> try{
> SplashScreen splash=new SplashScreen();
> splash.setVisible(true);
> }
> catch (Exception ex)
> {
> System.out.println("An error with the poker client
has
> occured: "+ex.getMessage());
> }
> }
> };
> displayThread.start();
> }
> }
>
> So basically my method assigns a click EventListener on an XML element
> in the document.
>
> Rinse and repeat for other elements/eventlisteners. I love how simple
> and consequently how quick it is to expand :)
>
> Hope this helps,
>
> Lewis Keen
> Final Year, Software Engineering
> De Montfort University, Leicester
>
> On 4/25/06, janice tan < tan.janice@gmail.com> wrote:
> >
> > hi,
> >
> > am trying to implement a java application and have been trying to make
use
> > of the batik plugin with eclipse. i have been sucessful in creating a
svg
> > document for a bar chart and adding it to a JSVGCanvas to display.
however,
> > i would like to make my svg interactive and would need to include some
> > mouseevents, linking and even loading anotehr svg on top.
> > i have previously managed to do this in javascript. but am not sure if
its
> > possible through java.
> >
> > thanks
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: batik-users-unsubscribe@xmlgraphics.apache.org
> For additional commands, e-mail: batik-users-help@xmlgraphics.apache.org
---------------------------------------------------------------------
To unsubscribe, e-mail: batik-users-unsubscribe@xmlgraphics.apache.org
For additional commands, e-mail: batik-users-help@xmlgraphics.apache.org
Re: using Java to write functions in SVG
Posted by Janice Tan <ta...@gmail.com>.
hi Lewis,
i have created a plugin project in eclipse and in the createPartControl
method in myView class, i have created a Composite in the display and a
frame in the composite. i then create a JSVGCanvas. i set the SVGDocument to
the canvas and then add the canvas to the frame.
i have another class to create the SVGDocument. in this class, i use a for
loop to create 'rect' elements for the bar segments.
Element e = document.createElementNS(svgNS, "rect");
e.setAttributeNS(null, "x", "xPos");
....
root.appendChild(e);
based on ur solution, does it mean that i would have to do something like
assign an id to the rect element and then:
e = myView.registerListener(....); //myView is the views class
and i would have to write the methods registerListener(...)?
also i would have to create another class for the DisplayAbout
EventListener. does this mean that for each event, i have to create a
seperate class? or can i put them all into a single class?
On 4/26/06, Lewis Keen <ye...@gmail.com> wrote:
>
> Janice,
>
> In my project (Texas Hold'em poker game) I have an about button
> element called "about" that has the register listener following line
> in Java:
>
> pokerTable.registerListener("about","click",new DisplayAbout());
>
> which calls the following method in my PokerTable (Main GUI) class:
>
> public void registerListener(String element,String
> action,EventListener listener)
> {
> try
> {
> Element elt = doc.getElementById(element);
> EventTarget t = (EventTarget)elt;
> t.addEventListener(action,listener,false);
> }catch(Exception ex)
> {
> System.out.println("Error whilst registering
> Listener: "+ex.getMessage());
> }
> }
>
> then my DisplayAbout EventListener does this:
>
> public class DisplayAbout implements EventListener {
> public void handleEvent(Event evt) {
> Thread displayThread=new Thread(){
> public void run(){
> try{
> SplashScreen splash=new SplashScreen();
> splash.setVisible(true);
> }
> catch (Exception ex)
> {
> System.out.println("An error with the poker client has
> occured: "+ex.getMessage());
> }
> }
> };
> displayThread.start();
> }
> }
>
> So basically my method assigns a click EventListener on an XML element
> in the document.
>
> Rinse and repeat for other elements/eventlisteners. I love how simple
> and consequently how quick it is to expand :)
>
> Hope this helps,
>
> Lewis Keen
> Final Year, Software Engineering
> De Montfort University, Leicester
>
> On 4/25/06, janice tan <ta...@gmail.com> wrote:
> >
> > hi,
> >
> > am trying to implement a java application and have been trying to make
> use
> > of the batik plugin with eclipse. i have been sucessful in creating a
> svg
> > document for a bar chart and adding it to a JSVGCanvas to display.
> however,
> > i would like to make my svg interactive and would need to include some
> > mouseevents, linking and even loading anotehr svg on top.
> > i have previously managed to do this in javascript. but am not sure if
> its
> > possible through java.
> >
> > thanks
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: batik-users-unsubscribe@xmlgraphics.apache.org
> For additional commands, e-mail: batik-users-help@xmlgraphics.apache.org
>
>
Re: using Java to write functions in SVG
Posted by Lewis Keen <ye...@gmail.com>.
Janice,
In my project (Texas Hold'em poker game) I have an about button
element called "about" that has the register listener following line
in Java:
pokerTable.registerListener("about","click",new DisplayAbout());
which calls the following method in my PokerTable (Main GUI) class:
public void registerListener(String element,String
action,EventListener listener)
{
try
{
Element elt = doc.getElementById(element);
EventTarget t = (EventTarget)elt;
t.addEventListener(action,listener,false);
}catch(Exception ex)
{
System.out.println("Error whilst registering Listener: "+ex.getMessage());
}
}
then my DisplayAbout EventListener does this:
public class DisplayAbout implements EventListener {
public void handleEvent(Event evt) {
Thread displayThread=new Thread(){
public void run(){
try{
SplashScreen splash=new SplashScreen();
splash.setVisible(true);
}
catch (Exception ex)
{
System.out.println("An error with the poker client has
occured: "+ex.getMessage());
}
}
};
displayThread.start();
}
}
So basically my method assigns a click EventListener on an XML element
in the document.
Rinse and repeat for other elements/eventlisteners. I love how simple
and consequently how quick it is to expand :)
Hope this helps,
Lewis Keen
Final Year, Software Engineering
De Montfort University, Leicester
On 4/25/06, janice tan <ta...@gmail.com> wrote:
>
> hi,
>
> am trying to implement a java application and have been trying to make use
> of the batik plugin with eclipse. i have been sucessful in creating a svg
> document for a bar chart and adding it to a JSVGCanvas to display. however,
> i would like to make my svg interactive and would need to include some
> mouseevents, linking and even loading anotehr svg on top.
> i have previously managed to do this in javascript. but am not sure if its
> possible through java.
>
> thanks
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