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/*
* ProGuard -- shrinking, optimization, obfuscation, and preverification
* of Java bytecode.
*
* Copyright (c) 2002-2014 Eric Lafortune (eric@graphics.cornell.edu)
*
* 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.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package proguard.gui.splash;
import java.awt.*;
import java.awt.image.BufferedImage;
/**
* This Sprite encapsulates another Sprite, which is then buffered in an Image.
*
* @author Eric Lafortune
*/
public class BufferedSprite implements Sprite
{
private final int bufferX;
private final int bufferY;
private final Image bufferImage;
private final Color backgroundColor;
private final Sprite sprite;
private final VariableInt x;
private final VariableInt y;
private long cachedTime = -1;
/**
* Creates a new BufferedSprite with an ABGR image.
* @param bufferX the x offset of the buffer image.
* @param bufferY the y offset of the buffer image.
* @param width the width of the buffer image.
* @param height the height of the buffer image.
* @param sprite the Sprite that is painted in the buffer.
* @param x the variable x ordinate of the image buffer for painting.
* @param y the variable y ordinate of the image buffer for painting.
*
*/
public BufferedSprite(int bufferX,
int bufferY,
int width,
int height,
Sprite sprite,
VariableInt x,
VariableInt y)
{
this(bufferX,
bufferY,
new BufferedImage(width, height, BufferedImage.TYPE_4BYTE_ABGR),
null,
sprite,
x,
y);
}
/**
* Creates a new BufferedSprite with the given image.
* @param bufferX the x offset of the buffer image.
* @param bufferY the y offset of the buffer image.
* @param bufferImage the Image that is used for the buffering.
* @param backgroundColor the background color that is used for the buffer.
* @param sprite the Sprite that is painted in the buffer.
* @param x the variable x ordinate of the image buffer for
* painting.
* @param y the variable y ordinate of the image buffer for
* painting.
*/
public BufferedSprite(int bufferX,
int bufferY,
Image bufferImage,
Color backgroundColor,
Sprite sprite,
VariableInt x,
VariableInt y)
{
this.bufferX = bufferX;
this.bufferY = bufferY;
this.bufferImage = bufferImage;
this.backgroundColor = backgroundColor;
this.sprite = sprite;
this.x = x;
this.y = y;
}
// Implementation for Sprite.
public void paint(Graphics graphics, long time)
{
if (time != cachedTime)
{
Graphics bufferGraphics = bufferImage.getGraphics();
// Clear the background.
if (backgroundColor != null)
{
Graphics2D bufferGraphics2D = (Graphics2D)bufferGraphics;
bufferGraphics2D.setComposite(AlphaComposite.Clear);
bufferGraphics.fillRect(0, 0, bufferImage.getWidth(null), bufferImage.getHeight(null));
bufferGraphics2D.setComposite(AlphaComposite.Src);
}
else
{
bufferGraphics.setColor(backgroundColor);
bufferGraphics.fillRect(0, 0, bufferImage.getWidth(null), bufferImage.getHeight(null));
}
// Set up the buffer graphics.
bufferGraphics.translate(-bufferX, -bufferY);
bufferGraphics.setColor(graphics.getColor());
bufferGraphics.setFont(graphics.getFont());
// Draw the sprite.
sprite.paint(bufferGraphics, time);
bufferGraphics.dispose();
cachedTime = time;
}
// Draw the buffer image.
graphics.drawImage(bufferImage,
bufferX + x.getInt(time),
bufferY + y.getInt(time),
null);
}
}
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