/*
* @(#)ColorConvert.java 1.29 99/09/07
*
* Copyright (c) 1998, 1999 by Sun Microsystems, Inc. All Rights Reserved.
*
* Sun grants you ("Licensee") a non-exclusive, royalty free, license to use,
* modify and redistribute this software in source and binary code form,
* provided that i) this copyright notice and license appear on all copies of
* the software; and ii) Licensee does not utilize the software in a manner
* which is disparaging to Sun.
*
* This software is provided "AS IS," without a warranty of any kind. ALL
* EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING ANY
* IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR
* NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN AND ITS LICENSORS SHALL NOT BE
* LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING
* OR DISTRIBUTING THE SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR ITS
* LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT,
* INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER
* CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF
* OR INABILITY TO USE SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGES.
*
* This software is not designed or intended for use in on-line control of
* aircraft, air traffic, aircraft navigation or aircraft communications; or in
* the design, construction, operation or maintenance of any nuclear
* facility. Licensee represents and warrants that it will not use or
* redistribute the Software for such purposes.
*/
package demos.Colors;
import java.awt.*;
import java.awt.geom.Rectangle2D;
import java.awt.color.ColorSpace;
import java.awt.image.BufferedImage;
import java.awt.image.ColorConvertOp;
import java.awt.font.TextLayout;
import java.awt.font.FontRenderContext;
import Surface;
/**
* ColorConvertOp a ColorSpace.TYPE_RGB BufferedImage to a ColorSpace.CS_GRAY
* BufferedImage.
*/
public class ColorConvert extends Surface {
private static Image img;
private static Color colors[] = { Color.red, Color.pink, Color.orange,
Color.yellow, Color.green, Color.magenta, Color.cyan, Color.blue};
public ColorConvert() {
setBackground(Color.white);
img = getImage("clouds.jpg");
}
public void render(int w, int h, Graphics2D g2) {
int iw = img.getWidth(this);
int ih = img.getHeight(this);
FontRenderContext frc = g2.getFontRenderContext();
Font font = g2.getFont();
g2.setColor(Color.black);
TextLayout tl = new TextLayout("ColorConvertOp RGB->GRAY", font, frc);
tl.draw(g2, (float) (w/2-tl.getBounds().getWidth()/2),
tl.getAscent()+tl.getLeading());
BufferedImage srcImg =
new BufferedImage(iw, ih, BufferedImage.TYPE_INT_RGB);
Graphics2D srcG = srcImg.createGraphics();
RenderingHints rhs = g2.getRenderingHints();
srcG.setRenderingHints(rhs);
srcG.drawImage(img, 0, 0, null);
String s = "JavaColor";
Font f = new Font("serif", Font.BOLD, iw/6);
tl = new TextLayout(s, f, frc);
Rectangle2D tlb = tl.getBounds();
char[] chars = s.toCharArray();
float charWidth = 0.0f;
int rw = iw/chars.length;
int rh = ih/chars.length;
for (int i = 0; i < chars.length; i++) {
tl = new TextLayout(String.valueOf(chars[i]), f, frc);
Shape shape = tl.getOutline(null);
srcG.setColor(colors[i%colors.length]);
tl.draw(srcG, (float) (iw/2-tlb.getWidth()/2+charWidth),
(float) (ih/2+tlb.getHeight()/2));
charWidth += (float) shape.getBounds().getWidth();
srcG.fillRect(i*rw, ih-rh, rw, rh);
srcG.setColor(colors[colors.length-1-i%colors.length]);
srcG.fillRect(i*rw, 0, rw, rh);
}
ColorSpace cs = ColorSpace.getInstance(ColorSpace.CS_GRAY);
ColorConvertOp theOp = new ColorConvertOp(cs, rhs);
BufferedImage dstImg =
new BufferedImage(iw, ih, BufferedImage.TYPE_INT_RGB);
theOp.filter(srcImg, dstImg);
g2.drawImage(srcImg, 10, 20, w/2-20, h-30, null);
g2.drawImage(dstImg, w/2+10, 20, w/2-20, h-30, null);
}
public static void main(String s[]) {
createDemoFrame(new ColorConvert());
}
}
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