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/* @test
@key headful
@bug 8057791 8160438 8163161
@summary Selection in JList is drawn with wrong colors in Nimbus L&F
@run main/timeout=500 bug8057791
*/
import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Point;
import java.awt.Rectangle;
import java.awt.Robot;
import java.awt.image.BufferedImage;
import javax.swing.DefaultListModel;
import javax.swing.JFrame;
import javax.swing.JList;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
import javax.swing.plaf.nimbus.NimbusLookAndFeel;
public class bug8057791 {
private static JFrame frame;
private static JList<String> list;
private static DefaultListModel<String> model;
private static Robot robot;
private static final int SELECTED_INDEX = 0;
private static volatile String errorString = "";
public static void main(String[] args) throws Exception {
robot = new Robot();
robot.waitForIdle();
runSteps();
if (!errorString.isEmpty()) {
throw new RuntimeException("Error Log:\n" + errorString);
}
}
private static void runSteps() throws Exception {
if (tryNimbusLookAndFeel()) {
createUI();
robot.waitForIdle();
runColorTestCase();
robot.waitForIdle();
cleanUp();
}
}
private static boolean tryNimbusLookAndFeel()
throws Exception {
try {
UIManager.setLookAndFeel(new NimbusLookAndFeel());
} catch (UnsupportedLookAndFeelException e) {
errorString += e.getMessage();
return false;
}
return true;
}
private static void createUI()
throws Exception {
SwingUtilities.invokeAndWait(new Runnable() {
@Override
public void run() {
frame = new JFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
list = new JList<>();
model = new DefaultListModel<>();
model.add(0, "@@");
Font font = list.getFont();
list.setFont(
new Font(font.getFontName(),
Font.BOLD,
(int) (font.getSize2D() * 2)));
list.setModel(model);
list.setSelectedIndex(SELECTED_INDEX);
frame.add(list);
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
});
}
private static void runColorTestCase() throws Exception {
SwingUtilities.invokeAndWait(new Runnable() {
@Override
public void run() {
Rectangle cellBounds = list.getCellBounds(SELECTED_INDEX, SELECTED_INDEX);
cellBounds.x += list.getLocationOnScreen().x;
cellBounds.y += list.getLocationOnScreen().y;
//positive test cases
Color foregroundColor = list.getSelectionForeground();
Color backgroundColor = list.getSelectionBackground();
checkColor(foregroundColor, cellBounds);
checkColor(backgroundColor, cellBounds);
//negative test cases
Color changedForegroundColor = foregroundColor.darker();
Color changedBackgroundColor = backgroundColor.brighter();
checkNotColor(changedForegroundColor, cellBounds);
checkNotColor(changedBackgroundColor, cellBounds);
}
});
}
private static void checkColor(Color colorCheck, Rectangle bounds) {
if (!findColor(colorCheck, bounds)) {
String error = "[ERROR][" + colorCheck.toString()
+ "] Not found in selected cell";
errorString += error;
}
}
private static void checkNotColor(Color colorCheck, Rectangle bounds) {
if (findColor(colorCheck, bounds)) {
String error = "[ERROR][" + colorCheck.toString()
+ "] is found in selected cell. "
+ "Not supposed to be found in negative test case";
errorString += error;
}
}
private static boolean findColor(Color colorCheck, Rectangle bounds) {
BufferedImage img = new BufferedImage(bounds.width,
bounds.height,
BufferedImage.TYPE_INT_ARGB);
Graphics g = img.getGraphics();
list.paint(g);
g.dispose();
checkLoops:
for (int x = 0; x < bounds.width; x++) {
for (int y = 0; y < bounds.height; y++) {
Point relativePointCheck = new Point(bounds.x + x, bounds.y + y);
robot.mouseMove(relativePointCheck.x, relativePointCheck.y);
Color detectedColor = robot.getPixelColor(relativePointCheck.x,
relativePointCheck.y);
if (detectedColor.equals(colorCheck)) {
return true;
}
if (isMac()) {
//One more chance for Mac due to non-Generic display setting
detectedColor = new Color(img.getRGB(x, y), true);
if (detectedColor.equals(colorCheck)) {
return true;
}
}
}
}
return false;
}
private static boolean isMac() {
String osName = System.getProperty("os.name");
return osName.contains("Mac");
}
private static void cleanUp() throws Exception {
SwingUtilities.invokeAndWait(new Runnable() {
@Override
public void run() {
frame.dispose();
}
});
}
}