/*
* Copyright 2015 Igor Maznitsa.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.igormaznitsa.mindmap.swing.panel.ui;
import com.igormaznitsa.mindmap.model.MindMap;
import com.igormaznitsa.mindmap.model.Topic;
import java.awt.Point;
import java.awt.Rectangle;
import java.awt.event.MouseEvent;
import java.awt.geom.Rectangle2D;
import java.util.ArrayList;
import java.util.List;
import javax.annotation.Nonnull;
import javax.annotation.Nullable;
import com.igormaznitsa.meta.annotation.MustNotContainNull;
public class MouseSelectedArea {
private final Point startPoint;
private final Point currentPoint;
public MouseSelectedArea(@Nonnull final Point point) {
this.startPoint = new Point(point);
this.currentPoint = new Point(point);
}
public void update(@Nonnull final MouseEvent e) {
this.currentPoint.setLocation(e.getPoint());
}
@Nonnull
public Rectangle asRectangle() {
final int minX = Math.min(this.startPoint.x, this.currentPoint.x);
final int minY = Math.min(this.startPoint.y, this.currentPoint.y);
final int maxX = Math.max(this.startPoint.x, this.currentPoint.x);
final int maxY = Math.max(this.startPoint.y, this.currentPoint.y);
return new Rectangle(minX, minY, maxX - minX, maxY - minY);
}
@Nonnull
@MustNotContainNull
public List<Topic> getAllSelectedElements(@Nonnull final MindMap map) {
final List<Topic> result = new ArrayList<Topic>();
final Rectangle rect = asRectangle();
addCoveredToList(result, map.getRoot(), rect.getBounds2D());
return result;
}
private void addCoveredToList(@Nonnull @MustNotContainNull final List<Topic> list, @Nullable final Topic root, @Nonnull final Rectangle2D rect) {
if (root == null || root.getPayload() == null) {
return;
}
final AbstractElement payload = (AbstractElement) root.getPayload();
if (payload != null) {
if (rect.contains(payload.getBounds())) {
list.add(root);
}
if (payload instanceof AbstractCollapsableElement && ((AbstractCollapsableElement) payload).isCollapsed()) {
return;
}
}
for (final Topic t : root.getChildren()) {
addCoveredToList(list, t, rect);
}
}
}