Author: kono
Date: 2009-11-25 18:22:28 -0800 (Wed, 25 Nov 2009)
New Revision: 18590
Modified:
corelibs/trunk/ding/src/ding/view/DGraphView.java
Log:
Snapshot image generator had been added. This API will be used by Nested
Network Image Manager.
Modified: corelibs/trunk/ding/src/ding/view/DGraphView.java
===================================================================
--- corelibs/trunk/ding/src/ding/view/DGraphView.java 2009-11-26 01:56:20 UTC
(rev 18589)
+++ corelibs/trunk/ding/src/ding/view/DGraphView.java 2009-11-26 02:22:28 UTC
(rev 18590)
@@ -96,6 +96,9 @@
* @author Nerius Landys
*/
public class DGraphView implements GraphView, Printable {
+ // Size of snapshot image
+ private static final int DEF_SNAPSHOT_SIZE = 500;
+
static final float DEFAULT_ANCHOR_SIZE = 9.0f;
static final Paint DEFAULT_ANCHOR_SELECTED_PAINT = Color.red;
static final Paint DEFAULT_ANCHOR_UNSELECTED_PAINT = Color.black;
@@ -297,8 +300,20 @@
* Used for caching texture paint.
*/
Paint m_lastTexturePaint = null;
-
+
/**
+ * Snapshot of current view. Will be updated by CONTENT_CHANGED event.
+ *
+ * This is used by a new nested network feature from 2.7.
+ */
+ private Image snapshotImage;
+
+ /**
+ * Represents current snapshot is latest version or not.
+ */
+ private boolean latest;
+
+ /**
* Creates a new DGraphView object.
*
* @param perspective The graph model that we'll be creating a view for.
@@ -331,6 +346,12 @@
m_selectedNodes = new IntBTree();
m_selectedEdges = new IntBTree();
m_selectedAnchors = new IntBTree();
+
+ // Add ContentChange Listener for handling nested network.
+ this.addContentChangeListener(new
DGraphViewContentChangeListener());
+ // Snapshot image is always null at this point.
+ this.snapshotImage = null;
+ this.latest = false;
}
/**
@@ -2516,4 +2537,39 @@
System.out.println("invalid zoom: " + zoom + " using orig: "
+ orig);
return orig;
}
+
+
+ /**
+ * Returns the current snapshot image of this view.
+ *
+ * <p>
+ * This will be used nested network manager.
+ * No unnecessary image object will be created if networks in the
current
+ * session does not contain any nested network, i.e., should not have
+ * performance/memory issue.
+ *
+ * @return Image of this view. It is always up-to-date.
+ */
+ public Image getSnapshot() {
+ if(!latest) {
+ // Need to update snapshot.
+ snapshotImage = createImage(DEF_SNAPSHOT_SIZE,
DEF_SNAPSHOT_SIZE, 1);
+ latest = true;
+ }
+
+ return snapshotImage;
+ }
+
+
+ /**
+ * Listener for update flag of snapshot image.
+ *
+ * @author kono
+ *
+ */
+ private final class DGraphViewContentChangeListener implements
ContentChangeListener {
+ public void contentChanged() {
+ latest = false;
+ }
+ }
}
--
You received this message because you are subscribed to the Google Groups
"cytoscape-cvs" group.
To post to this group, send email to [email protected].
To unsubscribe from this group, send email to
[email protected].
For more options, visit this group at
http://groups.google.com/group/cytoscape-cvs?hl=en.
