uk.co.modularaudio.service.bufferedimageallocation.impl.debugwindow.imagebrowser.RawImageCanvas.java Source code

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Here is the source code for uk.co.modularaudio.service.bufferedimageallocation.impl.debugwindow.imagebrowser.RawImageCanvas.java

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/**
 *
 * Copyright (C) 2015 - Daniel Hams, Modular Audio Limited
 *                      daniel.hams@gmail.com
 *
 * Mad 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.
 *
 * Mad 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 Mad.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

package uk.co.modularaudio.service.bufferedimageallocation.impl.debugwindow.imagebrowser;

import java.awt.AlphaComposite;
import java.awt.Color;
import java.awt.Composite;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Rectangle;
import java.awt.image.BufferedImage;
import java.util.ArrayList;
import java.util.Set;

import javax.swing.JComponent;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import uk.co.modularaudio.service.bufferedimageallocation.impl.cache.FreeEntry;
import uk.co.modularaudio.service.bufferedimageallocation.impl.cache.RawImage;
import uk.co.modularaudio.service.bufferedimageallocation.impl.cache.UsedEntry;

public class RawImageCanvas extends JComponent {
    private static Log log = LogFactory.getLog(RawImageCanvas.class.getName());

    private static final long serialVersionUID = 9129489845103805746L;

    private BufferedImage curBufferedImage;

    private final ArrayList<Rectangle> freeBlockRectangles = new ArrayList<Rectangle>();
    private final ArrayList<Rectangle> usedBlockRectangles = new ArrayList<Rectangle>();

    private int width = 0;
    private int height = 0;

    private final Composite opaqueComposite = AlphaComposite.getInstance(AlphaComposite.SRC);
    private final Composite ninetyPercentAlphaComposite = AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 0.9f);
    //   private Composite fiftyPercentAlphaComposite = AlphaComposite.getInstance( AlphaComposite.SRC_OVER, 0.5f );
    //   private Composite tenPercentAlphaComposite = AlphaComposite.getInstance( AlphaComposite.SRC_OVER, 0.1f );

    private static final Color DARK_BLUE = Color.blue.darker().darker();

    public RawImageCanvas() {
    }

    public void clearDisplayedImage() {
        curBufferedImage = null;
        freeBlockRectangles.clear();
        revalidate();
    }

    public void setDisplayedImage(final RawImage ri, final Set<FreeEntry> freeEntrySet,
            final Set<UsedEntry> usedEntrySet) {
        if (log.isDebugEnabled()) {
            log.debug("Selected image has " + freeEntrySet.size() + " free entries");
        }
        curBufferedImage = ri.getRootBufferedImage();
        freeBlockRectangles.clear();
        for (final FreeEntry fe : freeEntrySet) {
            final Rectangle freeBlockRectangle = new Rectangle(fe.getX(), fe.getY(), fe.getWidth(), fe.getHeight());
            freeBlockRectangles.add(freeBlockRectangle);
        }
        usedBlockRectangles.clear();
        for (final UsedEntry ue : usedEntrySet) {
            final Rectangle usedBlockRectangle = new Rectangle(ue.getX(), ue.getY(), ue.getWidth(), ue.getHeight());
            usedBlockRectangles.add(usedBlockRectangle);
        }
        width = curBufferedImage.getWidth();
        height = curBufferedImage.getHeight();
        doSizeThingy(width, height);
        revalidate();
    }

    private void doSizeThingy(final int width, final int height) {
        final Dimension size = new Dimension(width + 1, height + 1);
        this.setMinimumSize(size);
        this.setSize(size);
        this.setMaximumSize(size);
        this.setPreferredSize(size);
    }

    private final Rectangle clipBounds = new Rectangle();

    @Override
    public void paint(final Graphics rawG) {
        final Graphics2D g = (Graphics2D) rawG;
        g.getClipBounds(clipBounds);

        if (curBufferedImage != null) {
            g.setComposite(opaqueComposite);
            g.setColor(Color.DARK_GRAY);
            g.fillRect(0, 0, width, height);
            g.drawImage(curBufferedImage, 0, 0, null);

            // Draw the free blocks over the top
            // We draw 50 transparent fill then outline with full yellow
            g.setColor(DARK_BLUE);
            g.setComposite(ninetyPercentAlphaComposite);
            //         g.setComposite( fiftyPercentAlphaComposite );
            //         g.setComposite( tenPercentAlphaComposite );
            for (final Rectangle freeBlockRectangle : freeBlockRectangles) {
                g.fillRect(freeBlockRectangle.x, freeBlockRectangle.y, freeBlockRectangle.width,
                        freeBlockRectangle.height);
            }

            g.setColor(Color.yellow);
            g.setComposite(opaqueComposite);
            for (final Rectangle freeBlockRectangle : freeBlockRectangles) {
                g.drawRect(freeBlockRectangle.x, freeBlockRectangle.y, freeBlockRectangle.width,
                        freeBlockRectangle.height);
            }

            g.setComposite(opaqueComposite);
            g.setColor(Color.RED);
            for (final Rectangle usedBlockRectangle : usedBlockRectangles) {
                g.drawRect(usedBlockRectangle.x, usedBlockRectangle.y, usedBlockRectangle.width,
                        usedBlockRectangle.height);
            }
        } else {
            g.setColor(Color.gray);
            g.fillRect(0, 0, width, height);
        }
    }

}