1 | // License: GPL. For details, see LICENSE file.
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2 | package org.openstreetmap.josm.gui.layer.geoimage;
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3 |
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4 | import static org.junit.jupiter.api.Assertions.assertAll;
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5 | import static org.junit.jupiter.api.Assertions.assertDoesNotThrow;
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6 | import static org.junit.jupiter.api.Assertions.assertEquals;
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7 | import static org.junit.jupiter.api.Assertions.assertNotEquals;
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8 |
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9 | import java.awt.Dimension;
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10 | import java.awt.Graphics2D;
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11 | import java.awt.Rectangle;
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12 | import java.awt.event.MouseWheelEvent;
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13 | import java.awt.event.MouseWheelListener;
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14 | import java.awt.image.BufferedImage;
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15 | import java.io.IOException;
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16 | import java.lang.reflect.Field;
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17 | import java.nio.file.DirectoryStream;
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18 | import java.nio.file.Files;
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19 | import java.nio.file.Path;
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20 | import java.nio.file.Paths;
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21 | import java.util.function.IntFunction;
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22 | import java.util.function.Supplier;
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23 |
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24 | import javax.swing.JPanel;
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25 |
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26 | import org.junit.jupiter.api.Disabled;
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27 | import org.junit.jupiter.api.Test;
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28 | import org.openstreetmap.josm.gui.layer.geoimage.ImageDisplay.VisRect;
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29 | import org.openstreetmap.josm.gui.layer.imagery.ImageryFilterSettings;
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30 | import org.openstreetmap.josm.testutils.annotations.BasicPreferences;
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31 | import org.openstreetmap.josm.tools.ReflectionUtils;
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32 |
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33 | /**
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34 | * Unit tests of {@link ImageDisplay} class.
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35 | */
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36 | @BasicPreferences
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37 | class ImageDisplayTest {
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38 | /**
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39 | * Unit test of {@link ImageDisplay#calculateDrawImageRectangle}.
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40 | */
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41 | @Test
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42 | void testCalculateDrawImageRectangle() {
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43 | assertEquals(new Rectangle(),
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44 | ImageDisplay.calculateDrawImageRectangle(new VisRect(), new Dimension()));
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45 | assertEquals(new Rectangle(0, 0, 10, 5),
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46 | ImageDisplay.calculateDrawImageRectangle(new VisRect(0, 0, 10, 5), new Dimension(10, 5)));
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47 | assertEquals(new Rectangle(0, 0, 10, 5),
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48 | ImageDisplay.calculateDrawImageRectangle(new VisRect(0, 0, 20, 10), new Dimension(10, 5)));
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49 | assertEquals(new Rectangle(0, 0, 20, 10),
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50 | ImageDisplay.calculateDrawImageRectangle(new VisRect(0, 0, 10, 5), new Dimension(20, 10)));
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51 | assertEquals(new Rectangle(5, 0, 24, 12),
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52 | ImageDisplay.calculateDrawImageRectangle(new VisRect(0, 0, 10, 5), new Dimension(35, 12)));
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53 | assertEquals(new Rectangle(0, 1, 8, 4),
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54 | ImageDisplay.calculateDrawImageRectangle(new VisRect(0, 0, 10, 5), new Dimension(8, 6)));
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55 | }
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56 |
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57 | /**
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58 | * Performance test for {@link ImageDisplay.LoadImageRunnable}
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59 | * @throws Exception if any error occurs
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60 | */
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61 | @Test
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62 | @Disabled("Set working directory to image folder and run manually")
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63 | void testLoadImageRunnablePerformance() throws Exception {
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64 | ImageDisplay imageDisplay = new ImageDisplay(new ImageryFilterSettings());
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65 | imageDisplay.setSize(640, 480);
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66 | Graphics2D graphics = new BufferedImage(640, 480, BufferedImage.TYPE_INT_RGB).createGraphics();
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67 | try (DirectoryStream<Path> stream = Files.newDirectoryStream(Paths.get(".").toAbsolutePath(), "*.{JPG,jpg}")) {
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68 | for (Path p : stream) {
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69 | Runnable loadImage = imageDisplay.setImage0(new ImageEntry(p.toFile()));
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70 | loadImage.run();
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71 | imageDisplay.paintComponent(graphics);
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72 | }
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73 | }
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74 | }
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75 |
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76 | /**
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77 | * Non-regression test for #22770 which occurs when a high resolution trackpad does not have a full mouse wheel event
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78 | */
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79 | @Test
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80 | void testNonRegression22770() {
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81 | final ImageDisplay imageDisplay = new ImageDisplay(new ImageryFilterSettings());
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82 | final Field visRectField = assertDoesNotThrow(() -> ImageDisplay.class.getDeclaredField("visibleRect"));
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83 | final Field wheelListenerField = assertDoesNotThrow(() -> ImageDisplay.class.getDeclaredField("imgMouseListener"));
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84 | ReflectionUtils.setObjectsAccessible(wheelListenerField, visRectField);
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85 | final Supplier<VisRect> visRectSupplier = () -> new VisRect((VisRect) assertDoesNotThrow(() -> visRectField.get(imageDisplay)));
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86 | final MouseWheelListener listener = (MouseWheelListener) assertDoesNotThrow(() -> wheelListenerField.get(imageDisplay));
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87 | final IntFunction<MouseWheelEvent> mouseEventProvider = wheelRotation -> new MouseWheelEvent(new JPanel(), 0, 0, 0,
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88 | 320, 240, 320, 240, 0, false,
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89 | MouseWheelEvent.WHEEL_UNIT_SCROLL, wheelRotation, wheelRotation, wheelRotation);
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90 | imageDisplay.setSize(640, 480);
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91 | imageDisplay.setImage0(new TestImageEntry(640, 480)).run();
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92 | final VisRect initialVisibleRect = visRectSupplier.get();
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93 | assertEquals(640, initialVisibleRect.width);
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94 | assertEquals(480, initialVisibleRect.height);
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95 | // First, check that zoom in works
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96 | listener.mouseWheelMoved(mouseEventProvider.apply(-1));
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97 | assertNotEquals(initialVisibleRect, imageDisplay.getVisibleRect());
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98 | final VisRect zoomedInVisRect = visRectSupplier.get();
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99 | // If this fails, check to make certain that geoimage.zoom-step-factor defaults haven't changed
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100 | assertAll(() -> assertEquals(426, zoomedInVisRect.width),
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101 | () -> assertEquals(320, zoomedInVisRect.height));
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102 | // Now check that a zoom event with no wheel rotation does not cause movement
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103 | listener.mouseWheelMoved(mouseEventProvider.apply(0));
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104 | final VisRect noZoomVisRect = visRectSupplier.get();
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105 | assertAll(() -> assertEquals(426, noZoomVisRect.width),
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106 | () -> assertEquals(320, noZoomVisRect.height));
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107 |
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108 | // Finally zoom out
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109 | listener.mouseWheelMoved(mouseEventProvider.apply(1));
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110 | final VisRect zoomOutVisRect = visRectSupplier.get();
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111 | assertAll(() -> assertEquals(640, zoomOutVisRect.width),
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112 | () -> assertEquals(480, zoomOutVisRect.height));
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113 | }
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114 |
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115 | private static class TestImageEntry extends ImageEntry {
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116 | private final int width;
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117 | private final int height;
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118 | TestImageEntry(int width, int height) {
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119 | this.width = width;
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120 | this.height = height;
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121 | }
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122 |
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123 | @Override
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124 | public int getWidth() {
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125 | return this.width;
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126 | }
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127 |
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128 | @Override
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129 | public int getHeight() {
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130 | return this.height;
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131 | }
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132 |
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133 | @Override
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134 | public BufferedImage read(Dimension target) throws IOException {
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135 | return new BufferedImage(this.width, this.height, BufferedImage.TYPE_INT_RGB);
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136 | }
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137 | }
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138 | }
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