/*
* Copyright (C) 2010 Brockmann Consult GmbH (info@brockmann-consult.de)
*
* 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 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 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 com.bc.ceres.swing.figure;
import com.bc.ceres.grender.Viewport;
import com.bc.ceres.grender.ViewportAware;
import java.awt.Component;
import java.awt.Shape;
import java.awt.event.InputEvent;
import java.awt.event.MouseEvent;
import java.awt.geom.AffineTransform;
import java.awt.geom.Point2D;
public abstract class ViewportInteractor extends AbstractInteractor {
protected ViewportInteractor() {
}
protected Viewport getViewport(InputEvent inputEvent) {
return getViewport(inputEvent.getComponent());
}
protected AffineTransform getViewToModelTransform(InputEvent inputEvent) {
return getViewport(inputEvent).getViewToModelTransform();
}
protected AffineTransform getModelToViewTransform(InputEvent inputEvent) {
return getViewport(inputEvent).getModelToViewTransform();
}
protected Point2D toModelPoint(MouseEvent mouseEvent) {
return toModelPoint(mouseEvent, mouseEvent.getPoint());
}
protected Point2D toModelPoint(InputEvent inputEvent, Point2D point) {
return getViewToModelTransform(inputEvent).transform(point, null);
}
protected Shape toModelShape(InputEvent inputEvent, Shape shape) {
return getViewToModelTransform(inputEvent).createTransformedShape(shape);
}
private Viewport getViewport(Component component) {
while (true) {
if (component instanceof ViewportAware) {
return ((ViewportAware) component).getViewport();
} else if (component instanceof Viewport) {
return (Viewport) component;
} else if (component == null || component.getParent() == null) {
return null;
}
component = component.getParent();
}
}
}