/*
* Copyright 1996-2007 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Sun designates this
* particular file as subject to the "Classpath" exception as provided
* by Sun in the LICENSE file that accompanied this code.
*
* This code 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
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*/
package ae.sun.awt.image;
import ae.java.awt.Component;
import ae.java.awt.Color;
import ae.java.awt.SystemColor;
import ae.java.awt.Font;
import ae.java.awt.Graphics;
import ae.java.awt.Graphics2D;
import ae.java.awt.GraphicsEnvironment;
import ae.java.awt.image.BufferedImage;
import ae.java.awt.image.ImageProducer;
import ae.java.awt.image.ColorModel;
import ae.java.awt.image.WritableRaster;
import ae.sun.java2d.SunGraphics2D;
import ae.sun.java2d.SurfaceData;
/**
* This is a special variant of BufferedImage that keeps a reference to
* a Component. The Component's foreground and background colors and
* default font are used as the defaults for this image.
*/
public class OffScreenImage extends BufferedImage {
protected Component c;
private OffScreenImageSource osis;
private Font defaultFont;
/**
* Constructs an OffScreenImage given a color model and tile,
* for offscreen rendering to be used with a given component.
* The component is used to obtain the foreground color, background
* color and font.
*/
public OffScreenImage(Component c, ColorModel cm, WritableRaster raster,
boolean isRasterPremultiplied)
{
super(cm, raster, isRasterPremultiplied, null);
this.c = c;
initSurface(raster.getWidth(), raster.getHeight());
}
public Graphics getGraphics() {
return createGraphics();
}
public Graphics2D createGraphics() {
if (c == null) {
GraphicsEnvironment env =
GraphicsEnvironment.getLocalGraphicsEnvironment();
return env.createGraphics(this);
}
Color bg = c.getBackground();
if (bg == null) {
bg = SystemColor.window;
}
Color fg = c.getForeground();
if (fg == null) {
fg = SystemColor.windowText;
}
Font font = c.getFont();
if (font == null) {
if (defaultFont == null) {
defaultFont = new Font("Dialog", Font.PLAIN, 12);
}
font = defaultFont;
}
return new SunGraphics2D(SurfaceData.getPrimarySurfaceData(this),
fg, bg, font);
}
private void initSurface(int width, int height) {
Graphics2D g2 = createGraphics();
try {
g2.clearRect(0, 0, width, height);
} finally {
g2.dispose();
}
}
public ImageProducer getSource() {
if (osis == null) {
osis = new OffScreenImageSource(this);
}
return osis;
}
}