FilterFaceProvider.java

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/*
 * Gridarta MMORPG map editor for Crossfire, Daimonin and similar games.
 * Copyright (C) 2000-2015 The Gridarta 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, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

package net.sf.gridarta.model.face;

import java.awt.Toolkit;
import java.awt.image.FilteredImageSource;
import java.awt.image.ImageFilter;
import javax.swing.ImageIcon;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;

public class FilterFaceProvider extends AbstractFaceProvider {

    @Nullable
    private FaceProvider parent;

    @NotNull
    private final ImageFilter filter;

    public FilterFaceProvider(@NotNull final ImageFilter filter) {
        this.filter = filter;
    }

    public FilterFaceProvider(@Nullable final FaceProvider parent, @NotNull final ImageFilter filter) {
        this.parent = parent;
        this.filter = filter;
    }

    public void setParent(@Nullable final FaceProvider parent) {
        this.parent = parent;
    }

    @Nullable
    @Override
    protected ImageIcon createImage(@NotNull final String faceName, final long stretch) {
        if (parent == null) {
            throw new IllegalStateException("FilterFaceProvider in use but parent not set.");
        }
        final ImageIcon imageIcon = parent.getImageIconForFacename(faceName, stretch);
        if (imageIcon == null) {
            return null;
        }
        try {
            if (stretch != 0) {
                final StretchedImageFilter filter2 = (StretchedImageFilter) filter;
                filter2.setStretchedFactor(stretch);
            }

            return new ImageIcon(Toolkit.getDefaultToolkit().createImage(new FilteredImageSource(imageIcon.getImage().getSource(), filter)));
        } catch (final Exception ignored) {
            return null;
        }
    }

}