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104 lines
2.5 KiB
Java
104 lines
2.5 KiB
Java
/*******************************************************************************
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* SDR Trunk
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* Copyright (C) 2014 Dennis Sheirer
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>
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******************************************************************************/
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package map;
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import java.awt.Rectangle;
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import java.awt.event.MouseAdapter;
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import java.awt.event.MouseEvent;
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import java.awt.geom.Point2D;
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import org.jdesktop.swingx.JXMapViewer;
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/**
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* Creates a selection rectangle based on mouse input
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* Also triggers repaint events in the viewer
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* @author Martin Steiger
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*/
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public class SelectionAdapter extends MouseAdapter
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{
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private boolean dragging;
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private JXMapViewer viewer;
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private Point2D startPos = new Point2D.Double();
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private Point2D endPos = new Point2D.Double();
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/**
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* @param viewer the jxmapviewer
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*/
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public SelectionAdapter(JXMapViewer viewer)
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{
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this.viewer = viewer;
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}
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@Override
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public void mousePressed(MouseEvent e)
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{
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if (e.getButton() != MouseEvent.BUTTON3)
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return;
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startPos.setLocation(e.getX(), e.getY());
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endPos.setLocation(e.getX(), e.getY());
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dragging = true;
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}
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@Override
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public void mouseDragged(MouseEvent e)
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{
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if (!dragging)
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return;
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endPos.setLocation(e.getX(), e.getY());
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viewer.repaint();
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}
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@Override
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public void mouseReleased(MouseEvent e)
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{
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if (!dragging)
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return;
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if (e.getButton() != MouseEvent.BUTTON3)
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return;
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viewer.repaint();
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dragging = false;
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}
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/**
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* @return the selection rectangle
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*/
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public Rectangle getRectangle()
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{
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if (dragging)
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{
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int x1 = (int) Math.min(startPos.getX(), endPos.getX());
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int y1 = (int) Math.min(startPos.getY(), endPos.getY());
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int x2 = (int) Math.max(startPos.getX(), endPos.getX());
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int y2 = (int) Math.max(startPos.getY(), endPos.getY());
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return new Rectangle(x1, y1, x2-x1, y2-y1);
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}
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return null;
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}
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}
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