Don,
Thanks so much. I modified my openmap4.6.3 with the changes below
and
everything worked. I can now save any object drawn with the drawing
tool to
a file.
Appreciate your help,
Michelle Ratliff
SAIC IISBU
Columbia, MD
-----Original Message-----
From: OpenMap Support [mailto:openmap_at_bbn.com]
Sent: Wednesday, April 01, 2009 5:05 PM
To: Ratliff, Michelle W.
Cc: openmap-users_at_bbn.com
Subject: Re: [OpenMap Users] Saving text to file.
Hi Michelle,
Sorry, I forgot to mention that. I fixed the bug for the next version
of OpenMap and checked it into the OM5 beta available on the website
via svn (
http://openmap.bbn.com/svn/openmap/trunk).
In addition to marking the textMatteStroke as transient, I modified
these methods in OMText:
/**
* Write this object to a stream.
*/
private void writeObject(ObjectOutputStream oos) throws
IOException {
oos.defaultWriteObject();
// Write the Font. Take into account the font member could be
// null, although this is unlikely it never hurts to
// protect one's self.
boolean writeFont = (f != OMText.DEFAULT_FONT);
// First write a flag indicating if a Font is on the stream.
oos.writeBoolean(writeFont);
// Write the Font data if a font is on this object.
if (writeFont) {
oos.writeObject(f.getName());
oos.writeInt(f.getSize());
oos.writeInt(f.getStyle());
}
writeStroke(oos, stroke, OMGraphic.BASIC_STROKE);
writeStroke(oos, textMatteStroke, DEFAULT_TEXT_MATTE_STROKE);
}
/**
* Reconstitute from an ObjectInputStream.
*/
private void readObject(ObjectInputStream ois)
throws ClassNotFoundException, IOException {
ois.defaultReadObject();
// Get the flag form the stream
boolean hasFont = ois.readBoolean();
if (hasFont) {
String name = (String) ois.readObject();
int size = ois.readInt();
int style = ois.readInt();
f = new Font(name, style, size);
} else {
f = OMText.DEFAULT_FONT;
}
stroke = readStroke(ois, OMGraphic.BASIC_STROKE);
textMatteStroke = readStroke(ois, DEFAULT_TEXT_MATTE_STROKE);
}
I modified OMGraphic's methods, too:
/**
* Write this object to a stream.
*/
private void writeObject(ObjectOutputStream oos) throws
IOException {
oos.defaultWriteObject();
// Now write the Stroke. Take into account the stroke member
// could be null.
writeStroke(oos, stroke, OMGraphic.BASIC_STROKE);
}
protected void writeStroke(ObjectOutputStream oos, Stroke stroke,
Stroke defStroke) throws IOException {
boolean writeStroke = (stroke != defStroke) && stroke != null;
if (writeStroke) {
// First write a flag indicating if a Stroke is on the
// stream.
oos.writeBoolean(true);
if (stroke instanceof BasicStroke) {
BasicStroke s = (BasicStroke) stroke;
// Then write flag indicating stroke is a BasicStroke
oos.writeBoolean(true);
// Write the Stroke data if a Stroke is on this
// object.
if (s != null) {
oos.writeFloat(s.getLineWidth());
oos.writeInt(s.getEndCap());
oos.writeInt(s.getLineJoin());
oos.writeFloat(s.getMiterLimit());
oos.writeObject(s.getDashArray());
oos.writeFloat(s.getDashPhase());
}
} else if (stroke instanceof Serializable) {
oos.writeBoolean(false);
oos.writeObject((Serializable) stroke);
}
} else {
oos.writeBoolean(false);
}
}
/**
* Read this object from a stream.
*/
private void readObject(ObjectInputStream ois)
throws ClassNotFoundException, IOException {
ois.defaultReadObject();
// Read the Stroke
stroke = readStroke(ois, OMGraphic.BASIC_STROKE);
}
protected Stroke readStroke(ObjectInputStream ois, Stroke
defStroke)
throws ClassNotFoundException, IOException {
Stroke stroke = defStroke;
// Get the flag indicating a stroke was streamed
boolean streamHasStroke = ois.readBoolean();
// Read and create the stroke
if (streamHasStroke) {
boolean isBasicStroke = ois.readBoolean();
if (isBasicStroke) {
float linewidth = ois.readFloat();
int endcap = ois.readInt();
int linejoin = ois.readInt();
float miterlimit = ois.readFloat();
float dasharray[] = (float[]) ois.readObject();
float dashphase = ois.readFloat();
stroke = new BasicStroke(linewidth, endcap, linejoin,
miterlimit, dasharray, dashphase);
} else {
stroke = (Stroke) ois.readObject();
}
}
return stroke;
}
Hope this helps,
Don
On Apr 1, 2009, at 3:39 PM, Ratliff, Michelle W. wrote:
> Don,
>
> Thanks but I'm not sure how to do this. Would I need to pull the
> OMText.java out of openmap and call my own version of it? Then
> traverse
> The list of objects I'm trying to save and see if text object is being
> saved? Is there any examples you can give me? Is openmap planning on
> fixing this bug in the near future?
>
> Thanks for any help,
> Michelle
>
> -----Original Message-----
> From: OpenMap Support [mailto:openmap_at_bbn.com]
> Sent: Thursday, March 12, 2009 4:14 PM
> To: Ratliff, Michelle W.
> Cc: openmap-users_at_bbn.com
> Subject: Re: [OpenMap Users] Saving text to file.
>
> Hi Michelle,
>
> Ahh, I see the problem. I think that's a bug, dealing with the
> matting stroke. The OMGraphic class breaks the regular stroke down
> into components for serialization, and that new stroke object was just
> added. It needs to be marked as transient and then handled explicitly
> in the readObject/writeObject methods.
>
> - Don
>
>
> On Mar 12, 2009, at 8:40 AM, Ratliff, Michelle W. wrote:
>
>> Hello,
>>
>> I'm trying to save all graphics drawn by the user to a file so that
>> the user can reload it at a later time. The text object is giving
>> me an
>> error when I try to use the 'save map' option in the Drawing Tool
>> Layer.
>> I'm getting a "NotSerializableException" on the BasicStroke for the
>> OMText component. Does anyone know how to make it serializable?
>>
>> Thanks for any assistance!
>> Michelle Ratliff
>> SAIC IISBU
>> 410-872-7092
>>
>> --
>> [To unsubscribe to this list send an email to "majdart_at_bbn.com"
>> with the following text in the BODY of the message "unsubscribe
>> openmap-users"]
>
> =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
> Don Dietrick, dietrick_at_bbn.com
> BBN Technologies, Cambridge MA
> =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
>
>
>
> --
> [To unsubscribe to this list send an email to "majdart_at_bbn.com"
> with the following text in the BODY of the message "unsubscribe
> openmap-users"]
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
Don Dietrick, dietrick_at_bbn.com
BBN Technologies, Cambridge MA
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
--
[To unsubscribe to this list send an email to "majdart_at_bbn.com"
with the following text in the BODY of the message "unsubscribe openmap-users"]
Received on Thu Apr 02 2009 - 13:06:44 EDT