com.threerings.media.image.BackedVolatileMirage Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of nenya Show documentation
Facilities for making networked multiplayer games.
The newest version!
//
// Nenya library - tools for developing networked games
// Copyright (C) 2002-2012 Three Rings Design, Inc., All Rights Reserved
// https://github.com/threerings/nenya
//
// This library is free software; you can redistribute it and/or modify it
// under the terms of the GNU Lesser General Public License as published
// by the Free Software Foundation; either version 2.1 of the License, or
// (at your option) any later version.
//
// This library 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
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

package com.threerings.media.image;

import java.awt.Graphics;
import java.awt.Rectangle;
import java.awt.image.BufferedImage;

import static com.threerings.media.Log.log;

/**
 * Provides a volatile mirage that is backed by a buffered image that is
 * not obtained from the image manager but is instead provided at
 * construct time and completely circumvents the image manager's cache. As
 * such, this should not be used unless you know what you're doing.
 */
public class BackedVolatileMirage extends VolatileMirage
{
    /**
     * Creates a mirage with the supplied regeneration informoation and
     * prepared image.
     */
    public BackedVolatileMirage (ImageManager imgr, BufferedImage source)
    {
        super(imgr, new Rectangle(0, 0, source.getWidth(), source.getHeight()));
        _source = source;

        // create our volatile image for the first time
        createVolatileImage();
    }

    @Override
    protected int getTransparency ()
    {
        return _source.getColorModel().getTransparency();
    }

    @Override
    protected void refreshVolatileImage ()
    {
        Graphics gfx = _image.getGraphics();
        try {
            gfx.drawImage(_source, -_bounds.x, -_bounds.y, null);

        } catch (Exception e) {
            log.warning("Failure refreshing mirage " + this + ".", e);

        } finally {
            gfx.dispose();
        }
    }

    @Override
    protected void toString (StringBuilder buf)
    {
        super.toString(buf);
        buf.append(", src=").append(_source);
    }

    protected BufferedImage _source;
}