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package de.lmu.ifi.dbs.elki.visualization.visualizers.scatterplot.selection;
/*
This file is part of ELKI:
Environment for Developing KDD-Applications Supported by Index-Structures
Copyright (C) 2015
Ludwig-Maximilians-Universität München
Lehr- und Forschungseinheit für Datenbanksysteme
ELKI Development Team
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
import org.apache.batik.util.SVGConstants;
import org.w3c.dom.Element;
import org.w3c.dom.events.Event;
import org.w3c.dom.svg.SVGPoint;
import de.lmu.ifi.dbs.elki.data.type.TypeUtil;
import de.lmu.ifi.dbs.elki.database.Database;
import de.lmu.ifi.dbs.elki.database.UpdatableDatabase;
import de.lmu.ifi.dbs.elki.database.ids.DBIDs;
import de.lmu.ifi.dbs.elki.database.relation.Relation;
import de.lmu.ifi.dbs.elki.math.linearalgebra.Vector;
import de.lmu.ifi.dbs.elki.result.ResultUtil;
import de.lmu.ifi.dbs.elki.utilities.datastructures.hierarchy.Hierarchy;
import de.lmu.ifi.dbs.elki.utilities.exceptions.AbortException;
import de.lmu.ifi.dbs.elki.visualization.VisualizationTask;
import de.lmu.ifi.dbs.elki.visualization.VisualizationTree;
import de.lmu.ifi.dbs.elki.visualization.VisualizerContext;
import de.lmu.ifi.dbs.elki.visualization.batikutil.DragableArea;
import de.lmu.ifi.dbs.elki.visualization.batikutil.DragableArea.DragListener;
import de.lmu.ifi.dbs.elki.visualization.css.CSSClass;
import de.lmu.ifi.dbs.elki.visualization.gui.VisualizationPlot;
import de.lmu.ifi.dbs.elki.visualization.projections.Projection;
import de.lmu.ifi.dbs.elki.visualization.projector.ScatterPlotProjector;
import de.lmu.ifi.dbs.elki.visualization.style.StyleLibrary;
import de.lmu.ifi.dbs.elki.visualization.svg.SVGPlot;
import de.lmu.ifi.dbs.elki.visualization.svg.SVGUtil;
import de.lmu.ifi.dbs.elki.visualization.visualizers.AbstractVisFactory;
import de.lmu.ifi.dbs.elki.visualization.visualizers.Visualization;
import de.lmu.ifi.dbs.elki.visualization.visualizers.scatterplot.AbstractScatterplotVisualization;
/**
* Tool to move the currently selected objects.
*
* @author Heidi Kolb
* @author Erich Schubert
* @since 0.4.0
*
* @apiviz.stereotype factory
* @apiviz.uses Instance oneway - - «create»
*/
public class MoveObjectsToolVisualization extends AbstractVisFactory {
/**
* A short name characterizing this Visualizer.
*/
private static final String NAME = "Move Objects";
/**
* Constructor
*/
public MoveObjectsToolVisualization() {
super();
}
@Override
public Visualization makeVisualization(VisualizationTask task, VisualizationPlot plot, double width, double height, Projection proj) {
return new Instance(task, plot, width, height, proj);
}
@Override
public void processNewResult(VisualizerContext context, Object start) {
Database db = ResultUtil.findDatabase(context.getHierarchy());
if(!(db instanceof UpdatableDatabase)) {
return;
}
Hierarchy.Iter<ScatterPlotProjector<?>> it = VisualizationTree.filter(context, start, ScatterPlotProjector.class);
for(; it.valid(); it.advance()) {
ScatterPlotProjector<?> p = it.get();
final Relation<?> rel = p.getRelation();
if(!TypeUtil.NUMBER_VECTOR_FIELD.isAssignableFromType(rel.getDataTypeInformation())) {
continue;
}
final VisualizationTask task = new VisualizationTask(NAME, context, p.getRelation(), rel, MoveObjectsToolVisualization.this);
task.level = VisualizationTask.LEVEL_INTERACTIVE;
task.tool = true;
task.addFlags(VisualizationTask.FLAG_NO_THUMBNAIL | VisualizationTask.FLAG_NO_EXPORT);
task.addUpdateFlags(VisualizationTask.ON_DATA | VisualizationTask.ON_SAMPLE | VisualizationTask.ON_SELECTION);
task.initDefaultVisibility(false);
// baseResult.getHierarchy().add(p.getRelation(), task);
context.addVis(p, task);
}
}
/**
* Instance.
*
* @author Heidi Kolb
* @author Erich Schubert
*
* @apiviz.has de.lmu.ifi.dbs.elki.data.NumberVector oneway - - edits
*/
public class Instance extends AbstractScatterplotVisualization implements DragListener {
/**
* CSS tag for our event rectangle
*/
protected static final String CSS_ARROW = "moveArrow";
/**
* Element for the rectangle to add listeners
*/
private Element etag;
/**
* Element to contain the drag arrow
*/
private Element rtag;
/**
* Constructor.
*
* @param task Task
* @param plot Plot to draw to
* @param width Embedding width
* @param height Embedding height
* @param proj Projection
*/
public Instance(VisualizationTask task, VisualizationPlot plot, double width, double height, Projection proj) {
super(task, plot, width, height, proj);
addListeners();
}
@Override
public void fullRedraw() {
setupCanvas();
addCSSClasses(svgp);
rtag = svgp.svgElement(SVGConstants.SVG_G_TAG);
SVGUtil.addCSSClass(rtag, CSS_ARROW);
layer.appendChild(rtag);
DragableArea drag = new DragableArea(svgp, -0.6 * StyleLibrary.SCALE, -0.7 * StyleLibrary.SCALE, 1.3 * StyleLibrary.SCALE, 1.4 * StyleLibrary.SCALE, this);
etag = drag.getElement();
layer.appendChild(etag);
}
/**
* Updates the objects with the given DBIDs It will be moved depending on
* the given Vector
*
* @param dbids - DBIDs of the objects to move
* @param movingVector - Vector for moving object
*/
// TODO: move to DatabaseUtil?
private void updateDB(DBIDs dbids, Vector movingVector) {
throw new AbortException("FIXME: INCOMPLETE TRANSITION");
/*
* NumberVector nv = null; database.accumulateDataStoreEvents();
* Representation<DatabaseObjectMetadata> mrep =
* database.getMetadataQuery(); for(DBID dbid : dbids) { NV obj =
* database.get(dbid); // Copy metadata to keep DatabaseObjectMetadata
* meta = mrep.get(dbid);
*
* Vector v = proj.projectDataToRenderSpace(obj); v.set(0, v.get(0) +
* movingVector.get(0)); v.set(1, v.get(1) + movingVector.get(1)); NV nv =
* proj.projectRenderToDataSpace(v, obj); nv.setID(obj.getID());
*
* try { database.delete(dbid); database.insert(new Pair<NV,
* DatabaseObjectMetadata>(nv, meta)); } catch(UnableToComplyException e)
* { de.lmu.ifi.dbs.elki.logging.LoggingUtil.exception(e); } }
* database.flushDataStoreEvents();
*/
}
/**
* Delete the children of the element
*
* @param container SVG-Element
*/
private void deleteChildren(Element container) {
while(container.hasChildNodes()) {
container.removeChild(container.getLastChild());
}
}
/**
* Adds the required CSS-Classes
*
* @param svgp SVGPlot
*/
private void addCSSClasses(SVGPlot svgp) {
// Class for the rectangle to add eventListeners
if(!svgp.getCSSClassManager().contains(CSS_ARROW)) {
final CSSClass acls = new CSSClass(this, CSS_ARROW);
final StyleLibrary style = context.getStyleLibrary();
acls.setStatement(SVGConstants.CSS_STROKE_PROPERTY, style.getColor(StyleLibrary.SELECTION_ACTIVE));
acls.setStatement(SVGConstants.CSS_STROKE_WIDTH_PROPERTY, style.getLineWidth(StyleLibrary.SELECTION_ACTIVE));
acls.setStatement(SVGConstants.CSS_STROKE_LINECAP_PROPERTY, SVGConstants.CSS_ROUND_VALUE);
svgp.addCSSClassOrLogError(acls);
}
}
@Override
public boolean startDrag(SVGPoint startPoint, Event evt) {
return true;
}
@Override
public boolean duringDrag(SVGPoint startPoint, SVGPoint dragPoint, Event evt, boolean inside) {
deleteChildren(rtag);
rtag.appendChild(svgp.svgLine(startPoint.getX(), startPoint.getY(), dragPoint.getX(), dragPoint.getY()));
return true;
}
@Override
public boolean endDrag(SVGPoint startPoint, SVGPoint dragPoint, Event evt, boolean inside) {
Vector movingVector = new Vector(2);
movingVector.set(0, dragPoint.getX() - startPoint.getX());
movingVector.set(1, dragPoint.getY() - startPoint.getY());
if(context.getSelection() != null) {
updateDB(context.getSelection().getSelectedIds(), movingVector);
}
deleteChildren(rtag);
return true;
}
}
}
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