1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
|
/*
* Copyright (c) 2006 Sun Microsystems, Inc. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* - Redistribution of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistribution in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* Neither the name of Sun Microsystems, Inc. or the names of
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* 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
* MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR
* ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
* DISTRIBUTING THIS 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 THIS SOFTWARE, EVEN IF
* SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
*
* You acknowledge that this software is not designed or intended for use
* in the design, construction, operation or maintenance of any nuclear
* facility.
*
* Sun gratefully acknowledges that this software was originally authored
* and developed by Kenneth Bradley Russell and Christopher John Kline.
*/
package demos.j2d;
import com.jogamp.opengl.util.awt.Overlay;
import demos.gears.Gears;
import demos.util.*;
import gleem.linalg.*;
import java.awt.AlphaComposite;
import java.awt.Color;
import java.awt.Font;
import java.awt.Frame;
import java.awt.Graphics2D;
import java.awt.Rectangle;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.awt.font.FontRenderContext;
import java.awt.font.GlyphVector;
import java.text.DecimalFormat;
import javax.media.opengl.GLProfile;
import javax.media.opengl.GL;
import javax.media.opengl.GLAutoDrawable;
import javax.media.opengl.GLCapabilities;
import javax.media.opengl.GLEventListener;
import javax.media.opengl.awt.GLCanvas;
import com.jogamp.opengl.util.Animator;
/** A simple test of the Overlay utility class. Draws gears underneath
with moving Java 2D-rendered text on top. */
public class TestOverlay implements GLEventListener {
static {
GLProfile.initSingleton();
}
public static void main(String[] args) {
Frame frame = new Frame("Java 2D Overlay Test");
GLCapabilities caps = new GLCapabilities(null);
caps.setAlphaBits(8);
GLCanvas canvas = new GLCanvas(caps);
canvas.addGLEventListener(new Gears());
canvas.addGLEventListener(new TestOverlay());
frame.add(canvas);
frame.setSize(512, 512);
final Animator animator = new Animator(canvas);
frame.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
// Run this on another thread than the AWT event queue to
// make sure the call to Animator.stop() completes before
// exiting
new Thread(new Runnable() {
public void run() {
animator.stop();
System.exit(0);
}
}).start();
}
});
frame.setVisible(true);
animator.start();
}
private Overlay overlay;
private Time time;
private Font font;
private Color TRANSPARENT_BLACK = new Color(0.0f, 0.0f, 0.0f, 0.0f);
private FontRenderContext frc;
private GlyphVector gv;
private Vec2f velocity = new Vec2f(100.0f, 150.0f);
private Vec2f position;
private Rectangle textBounds;
private Rectangle lastTextBounds;
private String TEST_STRING = "Java 2D Text";
private long startTime;
private int frameCount;
private DecimalFormat format = new DecimalFormat("####.00");
private Rectangle fpsBounds;
public void init(GLAutoDrawable drawable) {
GL gl = drawable.getGL();
gl.setSwapInterval(0);
overlay = new Overlay(drawable);
time = new SystemTime();
((SystemTime) time).rebase();
// Start the text half way up the left side
position = new Vec2f(0.0f, drawable.getHeight() / 2);
// Create the font, render context, and glyph vector
font = new Font("SansSerif", Font.BOLD, 36);
}
public void dispose(GLAutoDrawable drawable) {
font = null;
overlay = null;
time = null;
position = null;
}
public void display(GLAutoDrawable drawable) {
if (startTime == 0) {
startTime = System.currentTimeMillis();
}
Graphics2D g2d = overlay.createGraphics();
if (++frameCount == 30) {
long endTime = System.currentTimeMillis();
float fps = 30.0f / (float) (endTime - startTime) * 1000;
frameCount = 0;
startTime = System.currentTimeMillis();
FontRenderContext frc = g2d.getFontRenderContext();
String fpsString = "FPS: " + format.format(fps);
GlyphVector gv = font.createGlyphVector(frc, TEST_STRING);
fpsBounds = gv.getPixelBounds(frc, 0, 0);
int x = drawable.getWidth() - fpsBounds.width - 20;
int y = drawable.getHeight() - 20;
g2d.setFont(font);
g2d.setComposite(AlphaComposite.Src);
g2d.setColor(TRANSPARENT_BLACK);
g2d.fillRect(x + fpsBounds.x, y + fpsBounds.y, fpsBounds.width, fpsBounds.height);
g2d.setColor(Color.WHITE);
g2d.drawString(fpsString, x, y);
overlay.markDirty(x + fpsBounds.x, y + fpsBounds.y, fpsBounds.width, fpsBounds.height);
}
time.update();
g2d.setFont(font);
g2d.setComposite(AlphaComposite.Src);
if (overlay.contentsLost()) {
frc = g2d.getFontRenderContext();
gv = font.createGlyphVector(frc, TEST_STRING);
}
// Compute the next position of the text
position = position.plus(velocity.times((float) time.deltaT()));
// Figure out whether we have to switch directions
textBounds = gv.getPixelBounds(frc, position.x(), position.y());
if (textBounds.getMinX() < 0) {
velocity.setX(Math.abs(velocity.x()));
} else if (textBounds.getMaxX() > drawable.getWidth()) {
velocity.setX(-1.0f * Math.abs(velocity.x()));
}
if (textBounds.getMinY() < 0) {
velocity.setY(Math.abs(velocity.y()));
} else if (textBounds.getMaxY() > drawable.getHeight()) {
velocity.setY(-1.0f * Math.abs(velocity.y()));
}
// Clear the last text (if any) and draw the current
if (lastTextBounds != null) {
g2d.setColor(TRANSPARENT_BLACK);
g2d.fillRect((int) lastTextBounds.getMinX(), (int) lastTextBounds.getMinY(),
(int) (lastTextBounds.getWidth() + 1), (int) (lastTextBounds.getHeight() + 1));
} else if (overlay.contentsLost()) {
g2d.setColor(TRANSPARENT_BLACK);
g2d.fillRect(0, 0, drawable.getWidth(), drawable.getHeight());
}
g2d.setColor(Color.WHITE);
g2d.drawString(TEST_STRING, position.x(), position.y());
// Compute the union of these rectangles to push an update to
// the overlay
Rectangle union = new Rectangle(textBounds);
if (lastTextBounds != null) {
union.add(lastTextBounds);
}
// Put a little slop around this text due to apparent rounding errors
overlay.markDirty(union.x, union.y, union.width + 10, union.height + 10);
// Move down the text bounds
lastTextBounds = textBounds;
// Draw the overlay
overlay.drawAll();
g2d.dispose();
}
// Unused methods
public void reshape(GLAutoDrawable drawable, int x, int y, int width, int height) {}
public void displayChanged(GLAutoDrawable drawable, boolean modeChanged, boolean deviceChanged) {}
}
|
