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• org.jhotdraw8.draw
• 0.3
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• Slice.java

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org.jhotdraw8.draw.figure.Slice Maven / Gradle / Ivy

/*
 * @(#)Slice.java
 * Copyright © 2023 The authors and contributors of JHotDraw. MIT License.
 */
package org.jhotdraw8.draw.figure;

import javafx.geometry.Bounds;
import javafx.geometry.Point2D;

/**
 * Defines a slice of a drawing.
 * 

 * The parent of a slice must be a {@link Layer} or a {@link Clipping} .
 * 

 * A slice may not have children.
 *
 * @author Werner Randelshofer
 */
public interface Slice extends Figure {

    @Override
    default boolean isSuitableParent(Figure newParent) {
        return newParent == null || (newParent instanceof Layer) || (newParent instanceof Clipping);
    }

    @Override
    default boolean isAllowsChildren() {
        return false;
    }

    /**
     * For vector graphics output. Specifies where the origin of the coordinate
     * system in the exported slice is. By default, this is the top left corner
     * of the slice.
     *
     * @return origin of coordinate system
     */
    default Point2D getSliceOrigin() {
        final Bounds b = getLayoutBounds();
        return new Point2D(b.getMinX(), b.getMinY());
    }
}