RectangleSelectionMapController.java

/*******************************************************************************
 * Copyright (c) MOBAC developers
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 2 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 General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 ******************************************************************************/
package mobac.gui.mapview.controller;

import java.awt.Point;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionListener;

import mobac.gui.mapview.JMapViewer;
import mobac.gui.mapview.PreviewMap;
import mobac.gui.mapview.layer.RectangleSelectionLayer;

/**
 * Implements the GUI logic for the preview map panel that manages the map selection and actions triggered by key
 * strokes.
 * 
 */
public class RectangleSelectionMapController extends JMapController implements MouseMotionListener, MouseListener {

	/**
	 * start point of selection rectangle in absolute tile coordinated regarding {@link JMapViewer#MAX_ZOOM}
	 */
	private Point iStartSelectionPoint;

	/**
	 * end point of selection rectangle in absolute tile coordinated regarding {@link JMapViewer#MAX_ZOOM}
	 */
	private Point iEndSelectionPoint;

	protected RectangleSelectionLayer mapLayer;

	public RectangleSelectionMapController(PreviewMap map) {
		super(map, false);
		mapLayer = new RectangleSelectionLayer(this);
	}

	@Override
	public void enable() {
		super.enable();
		// map.mapLayers.add(mapLayer);
	}

	@Override
	public void disable() {
		map.mapLayers.remove(mapLayer);
		map.setSelectionByTileCoordinate(null, null, true);
		super.disable();
	}

	/**
	 * Start drawing the selection rectangle if it was the 1st button (left button)
	 */
	public void mousePressed(MouseEvent e) {
		if (e.getButton() == MouseEvent.BUTTON1) {
			iStartSelectionPoint = convertToAbsolutePoint(e.getPoint());
			iEndSelectionPoint = convertToAbsolutePoint(e.getPoint());
		}
		map.grabFocus();
	}

	public void mouseDragged(MouseEvent e) {
		if ((e.getModifiersEx() & MouseEvent.BUTTON1_DOWN_MASK) == MouseEvent.BUTTON1_DOWN_MASK) {
			if (iStartSelectionPoint != null) {
				iEndSelectionPoint = convertToAbsolutePoint(e.getPoint());
				map.setSelectionByTileCoordinate(PreviewMap.MAX_ZOOM, iStartSelectionPoint, iEndSelectionPoint, true);
			}
		}
	}

	/**
	 * When dragging the map change the cursor back to it's pre-move cursor. If a double-click occurs center and zoom
	 * the map on the clicked location.
	 */
	public void mouseReleased(MouseEvent e) {
		if (e.getButton() == MouseEvent.BUTTON1) {
			if (e.getClickCount() == 1) {
				map.setSelectionByTileCoordinate(PreviewMap.MAX_ZOOM, iStartSelectionPoint,
						convertToAbsolutePoint(e.getPoint()), true);
			}
		}
		map.grabFocus();
	}

	public void mouseMoved(MouseEvent e) {
	}

	public void mouseClicked(MouseEvent e) {
		map.grabFocus();
	}

	public void mouseEntered(MouseEvent e) {
	}

	public void mouseExited(MouseEvent e) {
	}

	public Point getiStartSelectionPoint() {
		return iStartSelectionPoint;
	}

	public Point getiEndSelectionPoint() {
		return iEndSelectionPoint;
	}

	public RectangleSelectionLayer getMapLayer() {
		return mapLayer;
	}

	public PreviewMap getMap() {
		return map;
	}

}