Hello all,
I have a dynamically set JSVGCanvas and I am attempting to append a
document to it. If I stream out the current SVGDocument before hand and
after, I can see that the node elements were added correctly, but they
don't update visually on the canvas. I have tried it with and without
the UpdateManager to no avail. Here's a code snippet..
UpdateManager um = canvas.getUpdateManager();
if(um == null)
System.out.println("Manager returned null. Now i know why it
doesn't work...");
else
um.getUpdateRunnableQueue().invokeLater(new Runnable(){
public void run() {
// ...loop code to retrieve a node
// now append it
docRootNode.appendChild(doc.importNode(incomingNodes.item(j).cloneNode(true),
true));
}
System.out.println("Append Completed.....?");
System.out.println(convertDocToString(doc));
}
});
Here's a svg snippet of the original, what I am adding from, and the
after (i took out most of it since one element from each should suffice):
ORIGINAL SVG Document
<svg contentScriptType="text/ecmascript" width="254"
xmlns:xlink="http://www.w3.org/1999/xlink"; zoomAndPan="magnify"
contentStyleType="text/css" viewBox="0 0 25400 19100" height="191"
preserveAspectRatio="xMidYMid meet" xmlns="http://www.w3.org/2000/svg";
version="1.0">
<g style="stroke:none;fill:rgb(255,255,255)">
<polygon points="0,0 25400,0 25400,19050 0,19050 0,0"/>
</g>
<g style="font-family:Times New Roman;font-size:494;font-weight:400">
<g style="stroke:none;fill:rgb(0,0,0)">
<text x="19924" y="18352">
edited for post
</text>
</g>
</g>
</svg>
SVG Document to Import elements from:
<svg contentScriptType="text/ecmascript"
xmlns:xlink="http://www.w3.org/1999/xlink"; zoomAndPan="magnify"
contentStyleType="text/css" preserveAspectRatio="xMidYMid meet"
xmlns="http://www.w3.org/2000/svg"; version="1.0">
<polyline stroke-linecap="round"
points="13264,9409,14770,11761,15334,12560"
fill="none" scribbleOrder="0" stroke-linejoin="round"
opacity="0.9" stroke="#40F" user="Alice" stroke-width="400"/>
Document AFTER
<svg contentScriptType="text/ecmascript" width="254"
xmlns:xlink="http://www.w3.org/1999/xlink"; zoomAndPan="magnify"
contentStyleType="text/css" viewBox="0 0 25400 19100" height="191"
preserveAspectRatio="xMidYMid meet" xmlns="http://www.w3.org/2000/svg";
version="1.0">
<g style="stroke:none;fill:rgb(255,255,255)">
<polygon points="0,0 25400,0 25400,19050 0,19050 0,0"/>
</g>
<g style="font-family:Times New Roman;font-size:494;font-weight:400">
<g style="stroke:none;fill:rgb(0,0,0)">
<text x="19924" y="18352">
text edited for post
</text>
</g>
</g>
<polyline stroke-linecap="round"
points="13264,9409,14770,11761,15334,12560"
fill="none" scribbleOrder="0" stroke-linejoin="round"
opacity="0.9" stroke="#40F" user="Alice" stroke-width="400"/>
</svg>
On a side note, I have essentially a "paint" program with events based
off mouse movements (drag etc..) originally I used the updatemanager to
draw, however recently switched to not using it, since a mouse movement
triggers the repaint anyway and having a thread with each dragging mouse
movement seemed offensive. I know some about threading, I'm just not
sure how java uses/implements them and whether the overhead of using
that runnable every time is truly wrong. I have noticed that not using
the updatemanager for this causes an occasionaly "white out" of the
dirty area, while it waits to re-render. Any thoughts on which is better?
Thanks for your time and any help,
--Tom
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