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ColorConvert.java
Package: Java2D.rar [view]
Upload User: cdlibang
Upload Date: 2016-07-17
Package Size: 774k
Code Size: 5k
Category:
2D Graphic
Development Platform:
Java
- /*
- * @(#)ColorConvert.java 1.28 99/04/23
- *
- * 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.event.*;
- 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 DemoSurface;
- import DemoPanel;
- /**
- * ColorConvertOp a ColorSpace.TYPE_RGB BufferedImage to a ColorSpace.CS_GRAY
- * BufferedImage.
- */
- public class ColorConvert extends DemoSurface {
- 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 drawDemo(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[]) {
- Frame f = new Frame("Java2D Demo - ColorConvert");
- f.addWindowListener(new WindowAdapter() {
- public void windowClosing(WindowEvent e) {System.exit(0);}
- });
- f.add("Center", new DemoPanel(new ColorConvert()));
- f.pack();
- f.setSize(new Dimension(400,300));
- f.show();
- }
- }