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/*
* Copyright (c) 1999, 2024, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
* @test
* @bug 4190429
* @key headful
* @summary In this bug, text drawing performance should be reasonable.
* And should (per string) be consistent with the size of the
* rectangle in which the string is drawn, not the rectangle
* bounding the whole window.
*/
import java.awt.BorderLayout;
import java.awt.Canvas;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.Font;
import java.awt.FontMetrics;
import java.awt.Frame;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Panel;
import java.awt.RenderingHints;
import java.awt.Toolkit;
import java.awt.font.GlyphVector;
import java.awt.geom.AffineTransform;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
public class TextPerf extends Canvas {
static volatile CountDownLatch paintLatch = new CountDownLatch(1);
static volatile long paintTime = 5000; // causes test fail if it is not updated.
static volatile Frame frame;
public static void main(String[] args) throws Exception {
EventQueue.invokeAndWait(TextPerf::createUI);
paintLatch.await(5, TimeUnit.SECONDS);
if (paintTime > 2000) {
throw new RuntimeException("Paint time is " + paintTime + "ms");
}
if (frame != null) {
EventQueue.invokeAndWait(frame::dispose);
}
}
static void createUI() {
frame = new Frame("TextPerf");
frame.setLayout(new BorderLayout());
TextPerf tp = new TextPerf();
frame.add(tp, BorderLayout.CENTER);
frame.pack();
frame.setVisible(true);
}
public Dimension getPreferredSize() {
Dimension d = Toolkit.getDefaultToolkit().getScreenSize();
return new Dimension(d.width - 50, d.height - 50);
}
static Font[] fonts = {
new Font(Font.SERIF, Font.PLAIN, 10),
new Font(Font.SANS_SERIF, Font.PLAIN, 10),
new Font(Font.MONOSPACED, Font.ITALIC, 10),
new Font(Font.SERIF, Font.PLAIN, 14),
new Font(Font.SERIF, Font.BOLD, 12),
};
public void paint(Graphics g1) {
Graphics2D g = (Graphics2D)g1;
String text = "Hello,_Wgjpqy!";
Toolkit.getDefaultToolkit().sync();
long startTime = System.currentTimeMillis();
FontMetrics[] cachedMetrics = new FontMetrics[fonts.length];
Dimension size = getSize();
int prim = 0;
int spaceWidth = 5;
Color cols[] = { Color.red, Color.blue, Color.yellow,
Color.green, Color.pink, Color.orange} ;
for (int y = 20; y < size.height; y += 20) {
int i = 0;
for (int x = 0; x < size.width; i++) {
Font font = fonts[i % fonts.length];
FontMetrics metrics = cachedMetrics[i % fonts.length];
if (metrics == null) {
metrics = g.getFontMetrics(font);
cachedMetrics[i % fonts.length] = metrics;
}
g.setFont(font);
g.setColor(cols[i % cols.length]);
switch (prim++) {
case 0: g.drawString(text, x, y);
break;
case 1: g.drawBytes(text.getBytes(), 0, text.length(), x, y);
break;
case 2: char[] chs= new char[text.length()];
text.getChars(0,text.length(), chs, 0);
g.drawChars(chs, 0, text.length(), x, y);
break;
case 3: GlyphVector gv = font.createGlyphVector(
g.getFontRenderContext(), text);
g.drawGlyphVector(gv, (float)x, (float)y);
default: prim = 0;
}
x += metrics.stringWidth(text) + spaceWidth;
}
}
// Draw some transformed text to verify correct bounds calculated
AffineTransform at = AffineTransform.getTranslateInstance(50, 50);
at.scale(7.0,7.0);
at.rotate(1.0);
g.transform(at);
g.setColor(Color.black);
Font font = new Font(Font.SERIF, Font.PLAIN, 20);
RenderingHints hints = new RenderingHints(null);
hints.put(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);
g.setRenderingHints(hints);
g.setFont(font);
FontMetrics metrics = g.getFontMetrics(font);
g.drawString("Java", 5,5);
Toolkit.getDefaultToolkit().sync();
long endTime = System.currentTimeMillis();
paintTime = endTime - startTime;
String msg = "repainted in " + paintTime + " milliseconds";
System.out.println(msg);
System.out.flush();
paintLatch.countDown();
}
}
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