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40
41 package java2d.demos.Images;
42
43 import java.awt.*;
44 import java.awt.image.*;
45 import java.awt.event.*;
46 import java.awt.geom.AffineTransform  ;
47 import javax.swing.*;
48 import javax.swing.event.*;
49 import java2d.ControlsSurface;
50 import java2d.CustomControls;
51
52
53
54
58 public class ImageOps extends ControlsSurface implements ChangeListener {
59
60 protected JSlider slider1, slider2;
61 private static String imgName[] = { "bld.jpg", "boat.png" };
62 private static BufferedImage img[] = new BufferedImage[imgName.length];
63 private static String opsName[] = {
64 "Threshold", "RescaleOp" ,"Invert", "Yellow Invert", "3x3 Blur",
65 "3x3 Sharpen", "3x3 Edge", "5x5 Edge"};
66 private static BufferedImageOp biop[] = new BufferedImageOp[opsName.length];
67 private static int rescaleFactor = 128;
68 private static float rescaleOffset = 0;
69 private static int low = 100, high = 200;
70 private int opsIndex, imgIndex;
71
72 static {
73 thresholdOp(low, high);
74 int i = 1;
75 biop[i++] = new RescaleOp(1.0f, 0, null);
76 byte invert[] = new byte[256];
77 byte ordered[] = new byte[256];
78 for (int j = 0; j < 256 ; j++) {
79 invert[j] = (byte) (256-j);
80 ordered[j] = (byte) j;
81 }
82 biop[i++] = new LookupOp(new ByteLookupTable(0,invert), null);
83 byte[][] yellowInvert = new byte[][] { invert, invert, ordered };
84 biop[i++] = new LookupOp(new ByteLookupTable(0,yellowInvert), null);
85 int dim[][] = {{3,3}, {3,3}, {3,3}, {5,5}};
86 float data[][] = { {0.1f, 0.1f, 0.1f, 0.1f, 0.2f, 0.1f,
88 0.1f, 0.1f, 0.1f},
89 {-1.0f, -1.0f, -1.0f, -1.0f, 9.0f, -1.0f,
91 -1.0f, -1.0f, -1.0f},
92 { 0.f, -1.f, 0.f, -1.f, 5.f, -1.f,
94 0.f, -1.f, 0.f},
95 {-1.0f, -1.0f, -1.0f, -1.0f, -1.0f, -1.0f, -1.0f, -1.0f, -1.0f, -1.0f,
97 -1.0f, -1.0f, 24.0f, -1.0f, -1.0f,
98 -1.0f, -1.0f, -1.0f, -1.0f, -1.0f,
99 -1.0f, -1.0f, -1.0f, -1.0f, -1.0f}};
100 for (int j = 0; j < data.length; j++, i++) {
101 biop[i] = new ConvolveOp(new Kernel(dim[j][0],dim[j][1],data[j]));
102 }
103 }
104
105
106 public ImageOps() {
107 setDoubleBuffered(true);
108 setBackground(Color.white);
109 for (int i = 0; i < imgName.length; i++) {
110 Image image = getImage(imgName[i]);
111 int iw = image.getWidth(this);
112 int ih = image.getHeight(this);
113 img[i] = new BufferedImage(iw, ih, BufferedImage.TYPE_INT_RGB);
114 img[i].createGraphics().drawImage(image,0,0,null);
115 }
116 slider1 = new JSlider(JSlider.VERTICAL, 0, 255, low);
117 slider1.setPreferredSize(new Dimension(15, 100));
118 slider1.addChangeListener(this);
119 slider2 = new JSlider(JSlider.VERTICAL, 0, 255, high);
120 slider2.setPreferredSize(new Dimension(15, 100));
121 slider2.addChangeListener(this);
122 setControls(new Component[]{new DemoControls(this),slider1,slider2});
123 setConstraints(new String [] {
124 BorderLayout.NORTH, BorderLayout.WEST, BorderLayout.EAST });
125 }
126
127
128 public static void thresholdOp(int low, int high) {
129 byte threshold[] = new byte[256];
130 for (int j = 0; j < 256 ; j++) {
131 if (j > high) {
132 threshold[j] = (byte) 255;
133 } else if (j < low) {
134 threshold[j] = (byte) 0;
135 } else {
136 threshold[j] = (byte) j;
137 }
138 }
139 biop[0] = new LookupOp(new ByteLookupTable(0,threshold), null);
140 }
141
142
143 public void render(int w, int h, Graphics2D g2) {
144 int iw = img[imgIndex].getWidth(null);
145 int ih = img[imgIndex].getHeight(null);
146 AffineTransform oldXform = g2.getTransform();
147 g2.scale(((double)w) / iw, ((double)h) / ih);
148 g2.drawImage(img[imgIndex], biop[opsIndex], 0, 0);
149 g2.setTransform(oldXform);
150 }
151
152
153 public void stateChanged(ChangeEvent e) {
154 if (e.getSource().equals(slider1)) {
155 if (opsIndex == 0) {
156 thresholdOp(slider1.getValue(), high);
157 } else {
158 rescaleFactor = slider1.getValue();
159 biop[1] = new RescaleOp((float)rescaleFactor/128.0f, rescaleOffset, null);
160 }
161 } else {
162 if (opsIndex == 0) {
163 thresholdOp(low, slider2.getValue());
164 } else {
165 rescaleOffset = (float) slider2.getValue();
166 biop[1] = new RescaleOp((float)rescaleFactor/128.0f, rescaleOffset, null);
167 }
168
169 }
170 repaint();
171 }
172
173
174 public static void main(String s[]) {
175 createDemoFrame(new ImageOps());
176 }
177
178
179 static class DemoControls extends CustomControls implements ActionListener {
180
181 ImageOps demo;
182 JComboBox imgCombo, opsCombo;
183 Font font = new Font("serif", Font.PLAIN, 10);
184
185 public DemoControls(ImageOps demo) {
186 super(demo.name);
187 this.demo = demo;
188 add(imgCombo = new JComboBox());
189 imgCombo.setFont(font);
190 for (String name : ImageOps.imgName) {
191 imgCombo.addItem(name);
192 }
193 imgCombo.addActionListener(this);
194 add(opsCombo = new JComboBox());
195 opsCombo.setFont(font);
196 for (String name : ImageOps.opsName) {
197 opsCombo.addItem(name);
198 }
199 opsCombo.addActionListener(this);
200 }
201
202
203 public void actionPerformed(ActionEvent e) {
204 if (e.getSource().equals(opsCombo)) {
205 demo.opsIndex = opsCombo.getSelectedIndex();
206 if (demo.opsIndex == 0) {
207 demo.slider1.setValue(demo.low);
208 demo.slider2.setValue(demo.high);
209 demo.slider1.setEnabled(true);
210 demo.slider2.setEnabled(true);
211 } else if (demo.opsIndex == 1) {
212 demo.slider1.setValue(demo.rescaleFactor);
213 demo.slider2.setValue((int) demo.rescaleOffset);
214 demo.slider1.setEnabled(true);
215 demo.slider2.setEnabled(true);
216 } else {
217 demo.slider1.setEnabled(false);
218 demo.slider2.setEnabled(false);
219 }
220 } else if (e.getSource().equals(imgCombo)) {
221 demo.imgIndex = imgCombo.getSelectedIndex();
222 }
223 demo.repaint(10);
224 }
225
226
227 public Dimension getPreferredSize() {
228 return new Dimension(200,39);
229 }
230
231
232 public void run() {
233 try { thread.sleep(1111); } catch (Exception e) { return; }
234 Thread me = Thread.currentThread();
235 while (thread == me) {
236 for (int i = 0; i < ImageOps.imgName.length; i++) {
237 imgCombo.setSelectedIndex(i);
238 for (int j = 0; j < ImageOps.opsName.length; j++) {
239 opsCombo.setSelectedIndex(j);
240 if (j <= 1) {
241 for (int k = 50; k <= 200; k+=10) {
242 demo.slider1.setValue(k);
243 try {
244 thread.sleep(200);
245 } catch (InterruptedException e) { return; }
246 }
247 }
248 try {
249 thread.sleep(4444);
250 } catch (InterruptedException e) { return; }
251 }
252 }
253 }
254 thread = null;
255 }
256 } } |
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