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/*******************************************************************************
* Copyright (c) 2009 Red Hat, Inc.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Red Hat - initial API and implementation
*******************************************************************************/
package org.eclipse.linuxtools.callgraph.graphlisteners;
import org.eclipse.linuxtools.callgraph.StapGraph;
public class AutoScrollHelper {
public static void scrollUp(StapGraph graph) {
if (graph.getDrawMode() == StapGraph.CONSTANT_DRAWMODE_LEVEL) {
int parent = graph.getNodeData(graph.getRootVisibleNodeNumber()).parent;
if (graph.isCollapseMode())
parent = graph.getNodeData(graph.getRootVisibleNodeNumber()).collapsedParent;
if (graph.getNodeData(parent) != null && graph.getNodeData(parent).levelOfRecursion > 0 ) {
int animMode = graph.getAnimationMode();
graph.draw(graph.getDrawMode(), StapGraph.CONSTANT_ANIMATION_FASTEST, parent);
graph.setAnimationMode(animMode);
}
} else if (graph.getDrawMode() == StapGraph.CONSTANT_DRAWMODE_TREE) {
graph.shrinkTree();
}
}
public static void scrollDown(StapGraph graph) {
if (graph.getDrawMode() == StapGraph.CONSTANT_DRAWMODE_LEVEL) {
if (graph.getTopLevel() + StapGraph.levelBuffer <
graph.getLowestLevelOfNodesAdded()) {
int newLevel = graph.getTopLevel() + 1;
if (graph.levels.get(newLevel).get(0) == null)
return;
graph.setTopLevelTo(newLevel);
int animMode = graph.getAnimationMode();
graph.setAnimationMode(StapGraph.CONSTANT_ANIMATION_FASTEST);
graph.draw(graph.getDrawMode(), StapGraph.CONSTANT_ANIMATION_FASTEST,
graph.levels.get(newLevel).get(0));
graph.setAnimationMode(animMode);
}
} else if (graph.getDrawMode() == StapGraph.CONSTANT_DRAWMODE_TREE) {
graph.extendTree();
}
}
}
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