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40
41 package java2d.demos.Clipping;
42
43 import java.awt.*;
44 import java.awt.event.*;
45 import java.awt.geom.*;
46 import java.awt.image.BufferedImage  ;
47 import javax.swing.*;
48 import java2d.AnimatingControlsSurface;
49 import java2d.CustomControls;
50
51 import static java.lang.Math.random ;
52 import static java.awt.Color .*;
53
54
55
58 public class ClipAnim extends AnimatingControlsSurface {
59
60 private static Image dimg, cimg;
61 private static Color redBlend = new Color (255, 0, 0, 120);
62 private static Color greenBlend = new Color ( 0, 255, 0, 120);
63 private static BasicStroke bs = new BasicStroke(20.0f);
64 static TexturePaint texture;
65 static {
66 BufferedImage bi = new BufferedImage (5, 5, BufferedImage.TYPE_INT_RGB);
67 Graphics2D big = bi.createGraphics();
68 big.setBackground(YELLOW);
69 big.clearRect(0,0,5,5);
70 big.setColor(RED);
71 big.fillRect(0,0,3,3);
72 texture = new TexturePaint(bi,new Rectangle(0,0,5,5));
73 }
74 private AnimVal animval[] = new AnimVal[3];
75 protected boolean doObjects = true;
76 private Font originalFont = new Font("serif", Font.PLAIN, 12);
77 private Font font;
78 private GradientPaint gradient;
79 private int strX, strY;
80 private int dukeX, dukeY;
81
82
83 public ClipAnim() {
84 cimg = getImage("clouds.jpg");
85 dimg = getImage("duke.gif");
86 setBackground(WHITE);
87 animval[0] = new AnimVal(true);
88 animval[1] = new AnimVal(false);
89 animval[2] = new AnimVal(false);
90 setControls(new Component[] { new DemoControls(this) });
91 }
92
93
94 public void reset(int w, int h) {
95 for (AnimVal a : animval) {
96 a.reset(w, h);
97 }
98 gradient = new GradientPaint(0,h/2,RED,w*.4f,h*.9f,YELLOW);
99 dukeX = (int) (w*.25 - dimg.getWidth (this)/2);
100 dukeY = (int) (h*.25 - dimg.getHeight(this)/2);
101 FontMetrics fm = getFontMetrics(originalFont);
102 double sw = fm.stringWidth("CLIPPING");
103 double sh = fm.getAscent() + fm.getDescent();
104 double sx = (w/2-30)/sw;
105 double sy = (h/2-30)/sh;
106 AffineTransform Tx = AffineTransform.getScaleInstance(sx, sy);
107 font = originalFont.deriveFont(Tx);
108 fm = getFontMetrics(font);
109 strX = (int) (w*.75 - fm.stringWidth("CLIPPING")/2);
110 strY = (int) (h*.72 + fm.getAscent()/2);
111 }
112
113
114 public void step(int w, int h) {
115 for (AnimVal a : animval) {
116 if (a.isSelected) {
117 a.step(w, h);
118 }
119 }
120 }
121
122
123 public void render(int w, int h, Graphics2D g2) {
124
125 GeneralPath p1 = new GeneralPath();
126 GeneralPath p2 = new GeneralPath();
127
128 for (AnimVal a : animval) {
129 if (a.isSelected) {
130 double x = a.x;
131 double y = a.y;
132 double ew = a.ew;
133 double eh = a.eh;
134 p1.append(new Ellipse2D.Double(x, y, ew, eh ), false);
135 p2.append(new Rectangle2D.Double(x+5,y+5,ew-10,eh-10), false);
136 }
137 }
138 if (animval[0].isSelected ||
139 animval[1].isSelected ||
140 animval[2].isSelected)
141 {
142 g2.setClip(p1);
143 g2.clip(p2);
144 }
145
146 if (doObjects) {
147 int w2 = w/2;
148 int h2 = h/2;
149 g2.drawImage(cimg, 0, 0, w2, h2, null);
150 g2.drawImage(dimg, dukeX, dukeY, null);
151
152 g2.setPaint(texture);
153 g2.fillRect(w2, 0, w2, h2);
154
155 g2.setPaint(gradient);
156 g2.fillRect(0, h2, w2, h2);
157
158 g2.setColor(LIGHT_GRAY);
159 g2.fillRect(w2, h2, w2, h2);
160 g2.setColor(RED);
161 g2.drawOval(w2, h2, w2-1, h2-1);
162 g2.setFont(font);
163 g2.drawString("CLIPPING", strX, strY);
164 } else {
165 g2.setColor(LIGHT_GRAY);
166 g2.fillRect(0, 0, w, h);
167 }
168 }
169
170
171 public static void main(String argv[]) {
172 createDemoFrame(new ClipAnim());
173 }
174
175
176 public class AnimVal {
177 double ix = 5.0;
178 double iy = 3.0;
179 double iw = 5.0;
180 double ih = 3.0;
181 double x, y;
182 double ew, eh; boolean isSelected;
184
185 public AnimVal(boolean isSelected) {
186 this.isSelected = isSelected;
187 }
188
189
190 public void step(int w, int h) {
191 x += ix;
192 y += iy;
193 ew += iw;
194 eh += ih;
195
196 if ( ew > w/2) { ew = w/2; iw = random() * -w/16 - 1; }
197 if ( ew < w/8) { ew = w/8; iw = random() * w/16 + 1; }
198 if ( eh > h/2) { eh = h/2; ih = random() * -h/16 - 1; }
199 if ( eh < h/8) { eh = h/8; ih = random() * h/16 + 1; }
200
201 if ((x+ew) > w ) { x = (w - ew)-1; ix = random() * -w/32 - 1; }
202 if ((y+eh) > h ) { y = (h - eh)-2; iy = random() * -h/32 - 1; }
203 if ( x < 0 ) { x = 2; ix = random() * w/32 + 1; }
204 if ( y < 0 ) { y = 2; iy = random() * h/32 + 1; }
205 }
206
207
208 public void reset(int w, int h) {
209 x = random()*w;
210 y = random()*h;
211 ew = (random()*w)/2;
212 eh = (random()*h)/2;
213 }
214 }
215
216
217 static class DemoControls extends CustomControls implements ActionListener {
218
219 ClipAnim demo;
220 JToolBar toolbar;
221
222 public DemoControls(ClipAnim demo) {
223 super(demo.name);
224 this.demo = demo;
225 add(toolbar = new JToolBar());
226 toolbar.setFloatable(false);
227 addTool("Objects", true );
228 addTool("Clip1", true );
229 addTool("Clip2", false);
230 addTool("Clip3", false);
231 }
232
233
234 public void addTool(String str, boolean state) {
235 JToggleButton b =
236 (JToggleButton) toolbar.add(new JToggleButton(str));
237 b.setFocusPainted(false);
238 b.setSelected(state);
239 b.addActionListener(this);
240 int width = b.getPreferredSize().width;
241 Dimension prefSize = new Dimension(width, 21);
242 b.setPreferredSize(prefSize);
243 b.setMaximumSize(prefSize);
244 b.setMinimumSize(prefSize);
245 }
246
247
248 public void actionPerformed(ActionEvent e) {
249 JToggleButton b = (JToggleButton) e.getSource();
250 if (b.getText().equals("Objects")) {
251 demo.doObjects = b.isSelected();
252 } else if (b.getText().equals("Clip1")) {
253 demo.animval[0].isSelected = b.isSelected();
254 } else if (b.getText().equals("Clip2")) {
255 demo.animval[1].isSelected = b.isSelected();
256 } else if (b.getText().equals("Clip3")) {
257 demo.animval[2].isSelected = b.isSelected();
258 }
259 if (demo.animating.thread == null) {
260 demo.repaint();
261 }
262 }
263
264 public Dimension getPreferredSize() {
265 return new Dimension(200,40);
266 }
267
268
269 public void run() {
270 try {
271 thread.sleep(5000);
272 } catch (InterruptedException e) { return; }
273 ((AbstractButton) toolbar.getComponentAtIndex(2)).doClick();
274 try {
275 thread.sleep(5000);
276 } catch (InterruptedException e) { return; }
277 if (getSize().width > 400) {
278 ((AbstractButton) toolbar.getComponentAtIndex(3)).doClick();
279 }
280 thread = null;
281 }
282 } } |
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