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-rwxr-xr-xsrc/demos/j2d/TestTextRenderer.java246
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+/*
+ * 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;
+
+// Debugging only
+//import java.awt.EventQueue;
+//import java.awt.Rectangle;
+import java.awt.Font;
+import java.awt.Frame;
+import java.awt.event.*;
+import java.awt.geom.*;
+import java.text.*;
+
+import javax.media.opengl.*;
+import javax.media.opengl.glu.*;
+import com.sun.opengl.util.*;
+import com.sun.opengl.util.j2d.*;
+
+import demos.gears.Gears;
+import demos.util.*;
+import gleem.linalg.*;
+
+/** A simple test of the TextRenderer class. Draws gears underneath
+ with moving Java 2D-rendered text on top. */
+
+public class TestTextRenderer implements GLEventListener {
+ // private static final boolean DEBUG = false;
+
+ public static void main(String[] args) {
+ Frame frame = new Frame("Text Renderer Test");
+ GLCapabilities caps = new GLCapabilities();
+ caps.setAlphaBits(8);
+ GLCanvas canvas = new GLCanvas(caps);
+ canvas.addGLEventListener(new Gears());
+ TestTextRenderer test = new TestTextRenderer();
+ canvas.addGLEventListener(test);
+ 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();
+ }
+ });
+
+ /*
+ if (DEBUG) {
+ Frame dbgFrame = new Frame("Debug Output");
+ GLCanvas dbgCanvas = new GLCanvas(caps, null, canvas.getContext(), null);
+ dbgCanvas.addGLEventListener(test.new DebugListener(dbgFrame));
+ dbgFrame.add(dbgCanvas);
+ final FPSAnimator anim = new FPSAnimator(dbgCanvas, 10);
+ dbgFrame.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() {
+ anim.stop();
+ }
+ }).start();
+ }
+ });
+ dbgFrame.setSize(256, 256);
+ dbgFrame.setVisible(true);
+ anim.start();
+ }
+ */
+
+ frame.show();
+ animator.start();
+ }
+
+ private TextRenderer renderer;
+ private Time time;
+ private Font font;
+ private Vec2f velocity = new Vec2f(100.0f, 150.0f);
+ private Vec2f position;
+ private String TEST_STRING = "Java 2D Text";
+ private int textWidth;
+ private int textHeight;
+ private String fpsText;
+ private int fpsWidth;
+ private long startTime;
+ private int frameCount;
+ private DecimalFormat format = new DecimalFormat("####.00");
+
+ public void init(GLAutoDrawable drawable) {
+ GL gl = drawable.getGL();
+
+ // Don't artificially slow us down, at least on platforms where we
+ // have control over this (note: on X11 platforms this may not
+ // have the effect of overriding the setSwapInterval(1) in the
+ // Gears demo)
+ gl.setSwapInterval(0);
+
+ renderer = new TextRenderer(new Font("SansSerif", Font.BOLD, 36));
+ time = new SystemTime();
+ ((SystemTime) time).rebase();
+
+ // Start the text half way up the left side
+ position = new Vec2f(0.0f, drawable.getHeight() / 2);
+ Rectangle2D textBounds = renderer.getBounds(TEST_STRING);
+ textWidth = (int) textBounds.getWidth();
+ textHeight = (int) textBounds.getHeight();
+ }
+
+ public void display(GLAutoDrawable drawable) {
+ if (startTime == 0) {
+ startTime = System.currentTimeMillis();
+ }
+
+ if (++frameCount == 100) {
+ long endTime = System.currentTimeMillis();
+ float fps = 100.0f / (float) (endTime - startTime) * 1000;
+ frameCount = 0;
+ startTime = System.currentTimeMillis();
+
+ fpsText = "FPS: " + format.format(fps);
+ if (fpsWidth == 0) {
+ // Place it at a fixed offset wrt the lower right corner
+ fpsWidth = (int) renderer.getBounds("FPS: 1000.00").getWidth();
+ }
+ }
+
+ time.update();
+
+ // Compute the next position of the text
+ position = position.plus(velocity.times((float) time.deltaT()));
+ // Figure out whether we have to switch directions
+ if (position.x() < 0) {
+ velocity.setX(Math.abs(velocity.x()));
+ } else if (position.x() + textWidth > drawable.getWidth()) {
+ velocity.setX(-1.0f * Math.abs(velocity.x()));
+ }
+ if (position.y() < 0) {
+ velocity.setY(Math.abs(velocity.y()));
+ } else if (position.y() + textHeight > drawable.getHeight()) {
+ velocity.setY(-1.0f * Math.abs(velocity.y()));
+ }
+
+ GL gl = drawable.getGL();
+
+ // Prepare to draw text
+ renderer.beginRendering(drawable.getWidth(), drawable.getHeight());
+
+ // Draw text
+ renderer.draw(TEST_STRING, (int) position.x(), (int) position.y());
+
+ if (fpsWidth != 0) {
+ renderer.draw(fpsText,
+ drawable.getWidth() - fpsWidth - 10,
+ 20);
+ }
+
+ // Clean up rendering
+ renderer.endRendering();
+ }
+
+ // Unused methods
+ public void reshape(GLAutoDrawable drawable, int x, int y, int width, int height) {}
+ public void displayChanged(GLAutoDrawable drawable, boolean modeChanged, boolean deviceChanged) {}
+
+ /*
+ class DebugListener implements GLEventListener {
+ private GLU glu = new GLU();
+ private Frame frame;
+
+ DebugListener(Frame frame) {
+ this.frame = frame;
+ }
+
+ public void display(GLAutoDrawable drawable) {
+ GL gl = drawable.getGL();
+ gl.glClear(GL.GL_DEPTH_BUFFER_BIT | GL.GL_COLOR_BUFFER_BIT);
+ if (renderer != null) {
+ J2DTextureRenderer rend = renderer.getBackingStore();
+ final int w = rend.getWidth();
+ final int h = rend.getHeight();
+ rend.beginOrthoRendering(w, h);
+ rend.drawOrthoRect(0, 0);
+ rend.endOrthoRendering();
+ if (frame.getWidth() != w ||
+ frame.getHeight() != h) {
+ EventQueue.invokeLater(new Runnable() {
+ public void run() {
+ frame.setSize(w, h);
+ }
+ });
+ }
+ }
+ }
+
+ // Unused methods
+ public void init(GLAutoDrawable drawable) {}
+ public void reshape(GLAutoDrawable drawable, int x, int y, int width, int height) {}
+ public void displayChanged(GLAutoDrawable drawable, boolean modeChanged, boolean deviceChanged) {}
+ }
+ */
+}