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/*
* Copyright (c) 2000, 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 4371134
* @key headful
* @summary displays an animating fps (frames per second)
* counter. When the window is dragged from monitor to monitor,
* the speed of the animation should not change too greatly.
* @library /java/awt/regtesthelpers
* @build PassFailJFrame
* @run main/manual MultimonVImage
*/
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import javax.swing.JFrame;
import javax.swing.JViewport;
public class MultimonVImage {
private static final String instructionsText =
"This test should be run on any Windows platform that\n" +
"supports multiple monitors.\n" +
"You will see an animating fps (frames per second) counter at\n" +
"the bottom of the window. Drag the window into the other monitor\n" +
"and that counter should not change drastically. If the counter\n" +
"is much lower on one monitor than the other (barring situations\n" +
"described below) then the back buffer may not be accelerated\n" +
"on the second monitor and the test fails.\n" +
"Situations in which performance will differ even though there\n" +
"is acceleration on both monitors include:\n" +
" - different bit depths on each monitor. The higher the bits\n" +
" per pixel, the more data to push and the lower the fps number.\n" +
" Set the bit depths to be the same on both monitors to work\n" +
" around this issue.\n" +
" - the amount of acceleration available on each video card differs,\n" +
" so if your system uses different video cards then you should\n" +
" expect some difference between the cards. To work around this\n" +
" issue, try to use the same or similar video cards for each monitor.";
public static void main(String[] args) throws Exception {
PassFailJFrame.builder()
.title("MultimonVImage Instructions")
.instructions(instructionsText)
.testTimeOut(5)
.rows(25)
.columns(50)
.testUI(() -> {
AnimatingFrame af = new AnimatingFrame();
af.test();
af.run();
return af;
})
.build()
.awaitAndCheck();
}
}
class FrameCounter {
String fpsString = "Calculating...";
long startTime, endTime;
int numFrames;
public FrameCounter() {
startTime = System.currentTimeMillis();
}
public String addFrame() {
++numFrames;
return calculateFPS();
}
String calculateFPS() {
endTime = System.currentTimeMillis();
double seconds = ((double) endTime - (double) startTime) / 1000;
if (seconds > 1) {
int fps = (int) (numFrames / seconds);
fpsString = fps + " fps";
startTime = endTime;
numFrames = 0;
}
return fpsString;
}
}
class AnimatingComponent extends JViewport {
FrameCounter frameCounter;
int boxX, boxY;
int boxW, boxH;
int xStep = 1;
public AnimatingComponent() {
frameCounter = new FrameCounter();
boxX = 0;
boxY = 0;
boxW = 100;
boxH = 100;
}
public void paintComponent(Graphics g) {
boxX += xStep;
if (boxX <= 0 || (boxX + boxW) > getWidth()) {
xStep = -xStep;
boxX += (2 * xStep);
}
g.setColor(Color.white);
g.fillRect(0, 0, getWidth(), getHeight());
g.setColor(Color.green);
for (int i = 0; i < 100; ++i) {
g.fillRect(boxX, boxY, 100, 100);
}
g.setColor(Color.black);
g.drawString(frameCounter.addFrame(), 200, getHeight() - 30);
}
}
class AnimatingFrame extends JFrame implements Runnable {
JViewport component;
Thread thread;
public AnimatingFrame() {
setSize(500, 500);
setTitle("MultimonVImage Demo");
addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});
component = new AnimatingComponent();
component.setPreferredSize(new Dimension(500, 500));
setContentPane(component);
component.setVisible(true);
pack();
}
public void test() {
thread = new Thread(this);
thread.setPriority(Thread.MIN_PRIORITY);
thread.start();
}
public void run() {
Thread me = Thread.currentThread();
while (thread == me) {
component.repaint();
}
}
}
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