Ray Greenwell
79c6427c21
git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@4191 542714f4-19e9-0310-aa3c-eee0fc999fb1
105 lines
3.3 KiB
Java
105 lines
3.3 KiB
Java
//
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// $Id$
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//
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// Narya library - tools for developing networked games
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// Copyright (C) 2002-2004 Three Rings Design, Inc., All Rights Reserved
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// http://www.threerings.net/code/narya/
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//
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// This library is free software; you can redistribute it and/or modify it
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// under the terms of the GNU Lesser General Public License as published
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// by the Free Software Foundation; either version 2.1 of the License, or
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// (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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package com.threerings.media.image;
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import java.awt.Graphics;
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import java.awt.Rectangle;
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import java.awt.Transparency;
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import java.awt.image.BufferedImage;
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import com.threerings.media.Log;
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/**
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* A mirage implementation which allows the image to be maintained in
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* video memory and refetched from the image manager in the event that our
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* target screen resolution changes or we are flushed from video memory
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* for some other reason.
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*
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* <p> These objects are never created directly, but always obtained from
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* the {@link ImageManager}.
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*/
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public class CachedVolatileMirage extends VolatileMirage
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{
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/**
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* Creates a mirage with the supplied regeneration informoation and
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* prepared image.
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*/
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protected CachedVolatileMirage (
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ImageManager imgr, ImageManager.ImageKey source,
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Rectangle bounds, Colorization[] zations)
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{
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super(imgr, bounds);
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_source = source;
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_zations = zations;
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// create our volatile image for the first time
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createVolatileImage();
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}
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// documentation inherited
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protected int getTransparency ()
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{
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BufferedImage source = _imgr.getImage(_source, _zations);
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return (source == null) ? Transparency.OPAQUE :
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source.getColorModel().getTransparency();
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}
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// documentation inherited
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protected void refreshVolatileImage ()
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{
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Graphics gfx = null;
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try {
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BufferedImage source = _imgr.getImage(_source, _zations);
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if (source != null) {
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gfx = _image.getGraphics();
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gfx.drawImage(source, -_bounds.x, -_bounds.y, null);
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}
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} catch (Exception e) {
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Log.warning("Failure refreshing mirage " + this + ".");
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Log.logStackTrace(e);
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} finally {
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if (gfx != null) {
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gfx.dispose();
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}
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}
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}
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// documentation inherited
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protected void toString (StringBuilder buf)
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{
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super.toString(buf);
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buf.append(", key=").append(_source);
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buf.append(", zations=").append(_zations);
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}
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/** The key that identifies the image data used to create our volatile
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* image. */
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protected ImageManager.ImageKey _source;
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/** Optional colorizations that are applied to our source image when
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* creating our mirage. */
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protected Colorization[] _zations;
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}
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