422 lines
13 KiB
Java
422 lines
13 KiB
Java
/*
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* Copyright (c) 1999, 2024, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @bug 6616089
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* @summary Displays a dithered Canvas on all available GraphicsConfigurations
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* @library /java/awt/regtesthelpers
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* @build PassFailJFrame
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* @run main/manual MultiDitherTest
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*/
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import java.awt.BorderLayout;
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import java.awt.Button;
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import java.awt.Canvas;
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import java.awt.Choice;
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import java.awt.Color;
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import java.awt.Dimension;
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import java.awt.EventQueue;
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import java.awt.FlowLayout;
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import java.awt.FontMetrics;
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import java.awt.Frame;
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import java.awt.Graphics;
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import java.awt.GraphicsConfiguration;
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import java.awt.GraphicsDevice;
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import java.awt.GraphicsEnvironment;
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import java.awt.Image;
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import java.awt.Label;
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import java.awt.LayoutManager;
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import java.awt.Panel;
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import java.awt.TextField;
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import java.awt.event.ActionEvent;
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import java.awt.event.ActionListener;
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import java.awt.event.WindowAdapter;
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import java.awt.event.WindowEvent;
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import java.awt.image.ColorModel;
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import java.awt.image.MemoryImageSource;
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import java.util.List;
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public class MultiDitherTest extends Panel implements Runnable {
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final static int NOOP = 0;
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final static int RED = 1;
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final static int GREEN = 2;
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final static int BLUE = 3;
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final static int ALPHA = 4;
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final static int SATURATION = 5;
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final static String calcString = "Calculating...";
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static LayoutManager dcLayout = new FlowLayout(FlowLayout.CENTER, 10, 5);
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Thread runner;
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DitherControls XControls;
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DitherControls YControls;
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DitherCanvas canvas;
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public static void main(String[] args) throws Exception {
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String INSTRUCTIONS = """
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Depending on the GraphicsConfiguration, the dithering may be in
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color or in grayscale and/or display at a lower bitdepth.
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The number of GraphicsConfigurations will be printed in the
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TextArea below as the test is starting up.
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Ensure that there are as many Frames created as there are
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available GraphicsConfigurations.
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Examine each Frame to ensure it displays the dither pattern.
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If all Canvases display correctly, the test PASSES.
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Otherwise, the test FAILS.
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The GC button runs the garbage collector.
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This button can be ignored for now.
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""";
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PassFailJFrame passFailJFrame = PassFailJFrame.builder()
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.title("Test Instructions")
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.instructions(INSTRUCTIONS)
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.rows((int) INSTRUCTIONS.lines().count() + 2)
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.columns(35)
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.build();
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EventQueue.invokeAndWait(() -> {
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for (Frame frame : MultiDitherTest.initialize()) {
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PassFailJFrame.addTestWindow(frame);
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frame.setVisible(true);
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}
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});
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passFailJFrame.awaitAndCheck();
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}
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public MultiDitherTest(GraphicsConfiguration gc) {
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String xSpec, ySpec;
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int[] xValues = new int[2];
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int[] yValues = new int[2];
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xSpec = "red";
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ySpec = "blue";
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int xMethod = colorMethod(xSpec, xValues);
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int yMethod = colorMethod(ySpec, yValues);
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setLayout(new BorderLayout());
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XControls = new DitherControls(this, xValues[0], xValues[1],
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xMethod, false);
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YControls = new DitherControls(this, yValues[0], yValues[1],
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yMethod, true);
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YControls.addRenderButton();
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YControls.addGCButton();
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add("North", XControls);
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add("South", YControls);
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add("Center", canvas = new DitherCanvas(gc));
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}
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private static List<Frame> initialize() {
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GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
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GraphicsDevice[] gds = ge.getScreenDevices();
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Frame[] frames = new Frame[0];
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System.out.println(gds.length + " screens detected");
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for (int j = 0; j < gds.length; j++) {
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GraphicsDevice gd = gds[j];
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GraphicsConfiguration[] gcs = gd.getConfigurations();
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frames = new Frame[gcs.length];
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System.out.println(gcs.length + " GraphicsConfigurations available on screen " + j);
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for (int i = 0; i < gcs.length; i++) {
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Frame f = new Frame("MultiDitherTest " + (i + 1), gcs[i]);
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f.setLayout(new BorderLayout());
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f.setLocation(gcs[i].getBounds().x + 100 + (i * 10),
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gcs[i].getBounds().y + 100 + (i * 10));
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MultiDitherTest ditherTest = new MultiDitherTest(gcs[i]);
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f.add("Center", ditherTest);
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f.pack();
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f.addWindowListener(new WindowAdapter() {
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public void windowClosing(WindowEvent ev) {
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ev.getWindow().dispose();
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}
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});
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f.setVisible(true);
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ditherTest.start();
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frames[i] = f;
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}
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}
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return List.of(frames);
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}
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int colorMethod(String s, int[] values) {
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int method = NOOP;
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if (s == null) {
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s = "";
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}
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String lower = s.toLowerCase();
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if (lower.startsWith("red")) {
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method = RED;
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lower = lower.substring(3);
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} else if (lower.startsWith("green")) {
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method = GREEN;
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lower = lower.substring(5);
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} else if (lower.startsWith("blue")) {
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method = BLUE;
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lower = lower.substring(4);
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} else if (lower.startsWith("alpha")) {
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method = ALPHA;
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lower = lower.substring(4);
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} else if (lower.startsWith("saturation")) {
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method = SATURATION;
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lower = lower.substring(10);
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}
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if (method == NOOP) {
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values[0] = 0;
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values[1] = 0;
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return method;
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}
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int begval = 0;
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int endval = 255;
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try {
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int dash = lower.indexOf('-');
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if (dash < 0) {
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begval = endval = Integer.parseInt(lower);
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} else {
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begval = Integer.parseInt(lower.substring(0, dash));
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endval = Integer.parseInt(lower.substring(dash + 1));
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}
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} catch (Exception e) {
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}
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if (begval < 0) {
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begval = 0;
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}
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if (endval < 0) {
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endval = 0;
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}
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if (begval > 255) {
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begval = 255;
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}
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if (endval > 255) {
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endval = 255;
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}
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values[0] = begval;
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values[1] = endval;
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return method;
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}
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public void start() {
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runner = new Thread(this);
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runner.start();
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}
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public void stop() {
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runner = null;
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}
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public void destroy() {
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remove(XControls);
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remove(YControls);
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remove(canvas);
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}
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void applyMethod(int[] c, int method, int step, int total, int[] values) {
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if (method == NOOP) {
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return;
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}
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int val = ((total < 2)
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? values[0]
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: values[0] + ((values[1] - values[0]) * step / (total - 1)));
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switch (method) {
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case RED:
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c[0] = val;
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break;
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case GREEN:
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c[1] = val;
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break;
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case BLUE:
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c[2] = val;
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break;
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case ALPHA:
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c[3] = val;
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break;
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case SATURATION:
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int max = Math.max(Math.max(c[0], c[1]), c[2]);
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int min = max * (255 - val) / 255;
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if (c[0] == 0) c[0] = min;
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if (c[1] == 0) c[1] = min;
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if (c[2] == 0) c[2] = min;
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break;
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}
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}
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public void run() {
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canvas.setImage(null);
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Image img = calculateImage();
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synchronized (this) {
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if (img != null && runner == Thread.currentThread()) {
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canvas.setImage(img);
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}
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}
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}
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/**
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* Calculates and returns the image. Halts the calculation and returns
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* null if the Application is stopped during the calculation.
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*/
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Image calculateImage() {
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Thread me = Thread.currentThread();
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int width = canvas.getSize().width;
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int height = canvas.getSize().height;
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int[] xValues = new int[2];
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int[] yValues = new int[2];
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int xMethod = XControls.getParams(xValues);
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int yMethod = YControls.getParams(yValues);
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int[] pixels = new int[width * height];
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int[] c = new int[4];
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int index = 0;
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for (int j = 0; j < height; j++) {
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for (int i = 0; i < width; i++) {
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c[0] = c[1] = c[2] = 0;
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c[3] = 255;
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if (xMethod < yMethod) {
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applyMethod(c, xMethod, i, width, xValues);
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applyMethod(c, yMethod, j, height, yValues);
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} else {
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applyMethod(c, yMethod, j, height, yValues);
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applyMethod(c, xMethod, i, width, xValues);
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}
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pixels[index++] = ((c[3] << 24) |
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(c[0] << 16) |
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(c[1] << 8) |
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(c[2] << 0));
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}
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// Poll once per row to see if we've been told to stop.
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if (runner != me) {
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return null;
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}
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}
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return createImage(new MemoryImageSource(width, height,
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ColorModel.getRGBdefault(), pixels, 0, width));
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}
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static class DitherCanvas extends Canvas {
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Image img;
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GraphicsConfiguration mGC;
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public DitherCanvas(GraphicsConfiguration gc) {
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super(gc);
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mGC = gc;
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}
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public GraphicsConfiguration getGraphicsConfig() {
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return mGC;
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}
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public void paint(Graphics g) {
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int w = getSize().width;
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int h = getSize().height;
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if (img == null) {
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super.paint(g);
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g.setColor(Color.black);
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FontMetrics fm = g.getFontMetrics();
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int x = (w - fm.stringWidth(calcString)) / 2;
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int y = h / 2;
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g.drawString(calcString, x, y);
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} else {
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g.drawImage(img, 0, 0, w, h, this);
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}
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}
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public void update(Graphics g) {
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paint(g);
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}
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public Dimension getMinimumSize() {
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return new Dimension(20, 20);
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}
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public Dimension getPreferredSize() {
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return new Dimension(200, 200);
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}
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public Image getImage() {
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return img;
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}
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public void setImage(Image img) {
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this.img = img;
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paint(getGraphics());
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}
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}
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static class DitherControls extends Panel implements ActionListener {
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TextField start;
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TextField end;
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Button button;
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Choice choice;
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MultiDitherTest panel;
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Button gc;
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public DitherControls(MultiDitherTest app, int s, int e, int type,
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boolean vertical) {
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panel = app;
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setLayout(dcLayout);
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add(new Label(vertical ? "Vertical" : "Horizontal"));
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add(choice = new Choice());
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choice.addItem("Noop");
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choice.addItem("Red");
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choice.addItem("Green");
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choice.addItem("Blue");
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choice.addItem("Alpha");
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choice.addItem("Saturation");
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choice.select(type);
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add(start = new TextField(Integer.toString(s), 4));
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add(end = new TextField(Integer.toString(e), 4));
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}
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public void addRenderButton() {
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add(button = new Button("New Image"));
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button.addActionListener(this);
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}
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public void addGCButton() {
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add(gc = new Button("GC"));
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gc.addActionListener(this);
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}
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public int getParams(int[] values) {
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values[0] = Integer.parseInt(start.getText());
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values[1] = Integer.parseInt(end.getText());
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return choice.getSelectedIndex();
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}
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public void actionPerformed(ActionEvent e) {
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if (e.getSource() == button) {
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panel.start();
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} else if (e.getSource() == gc) {
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System.gc();
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}
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}
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}
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} |