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.openstreetmap.josm.tools.I18n.tr;
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5 |
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6 | import java.awt.Color;
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7 | import java.awt.Dimension;
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8 | import java.awt.FontMetrics;
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9 | import java.awt.Graphics;
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10 | import java.awt.Graphics2D;
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11 | import java.awt.Image;
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12 | import java.awt.MediaTracker;
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13 | import java.awt.Point;
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14 | import java.awt.Rectangle;
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15 | import java.awt.Toolkit;
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16 | import java.awt.event.MouseEvent;
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17 | import java.awt.event.MouseListener;
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18 | import java.awt.event.MouseMotionListener;
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19 | import java.awt.event.MouseWheelEvent;
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20 | import java.awt.event.MouseWheelListener;
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21 | import java.awt.geom.AffineTransform;
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22 | import java.awt.geom.Rectangle2D;
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23 | import java.awt.image.BufferedImage;
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24 | import java.io.File;
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25 |
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26 | import javax.swing.JComponent;
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27 |
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28 | import org.openstreetmap.josm.Main;
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29 | import org.openstreetmap.josm.tools.ExifReader;
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30 |
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31 | /**
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32 | * GUI component to display an image (photograph).
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33 | *
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34 | * Offers basic mouse interaction (zoom, drag) and on-screen text.
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35 | */
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36 | public class ImageDisplay extends JComponent {
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37 |
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38 | /** The file that is currently displayed */
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39 | private File file;
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40 |
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41 | /** The image currently displayed */
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42 | private transient Image image;
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43 |
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44 | /** The image currently displayed */
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45 | private boolean errorLoading;
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46 |
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47 | /** The rectangle (in image coordinates) of the image that is visible. This rectangle is calculated
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48 | * each time the zoom is modified */
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49 | private Rectangle visibleRect;
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50 |
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51 | /** When a selection is done, the rectangle of the selection (in image coordinates) */
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52 | private Rectangle selectedRect;
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53 |
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54 | /** The tracker to load the images */
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55 | private final MediaTracker tracker = new MediaTracker(this);
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56 |
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57 | private String osdText;
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58 |
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59 | private static final int DRAG_BUTTON = Main.pref.getBoolean("geoimage.agpifo-style-drag-and-zoom", false) ? 1 : 3;
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60 | private static final int ZOOM_BUTTON = DRAG_BUTTON == 1 ? 3 : 1;
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61 |
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62 | /** The thread that reads the images. */
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63 | private class LoadImageRunnable implements Runnable {
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64 |
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65 | private final File file;
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66 | private final int orientation;
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67 |
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68 | LoadImageRunnable(File file, Integer orientation) {
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69 | this.file = file;
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70 | this.orientation = orientation == null ? -1 : orientation;
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71 | }
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72 |
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73 | @Override
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74 | public void run() {
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75 | Image img = Toolkit.getDefaultToolkit().createImage(file.getPath());
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76 | tracker.addImage(img, 1);
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77 |
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78 | // Wait for the end of loading
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79 | while (!tracker.checkID(1, true)) {
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80 | if (this.file != ImageDisplay.this.file) {
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81 | // The file has changed
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82 | tracker.removeImage(img);
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83 | return;
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84 | }
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85 | try {
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86 | Thread.sleep(5);
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87 | } catch (InterruptedException e) {
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88 | Main.warn("InterruptedException in "+getClass().getSimpleName()+" while loading image "+file.getPath());
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89 | Thread.currentThread().interrupt();
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90 | }
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91 | }
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92 |
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93 | boolean error = tracker.isErrorID(1);
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94 | if (img.getWidth(null) < 0 || img.getHeight(null) < 0) {
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95 | error = true;
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96 | }
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97 |
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98 | synchronized (ImageDisplay.this) {
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99 | if (this.file != ImageDisplay.this.file) {
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100 | // The file has changed
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101 | tracker.removeImage(img);
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102 | return;
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103 | }
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104 |
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105 | if (!error) {
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106 | ImageDisplay.this.image = img;
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107 | visibleRect = new Rectangle(0, 0, img.getWidth(null), img.getHeight(null));
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108 |
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109 | final int w = (int) visibleRect.getWidth();
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110 | final int h = (int) visibleRect.getHeight();
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111 |
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112 | if (ExifReader.orientationNeedsCorrection(orientation)) {
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113 | final int hh, ww;
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114 | if (ExifReader.orientationSwitchesDimensions(orientation)) {
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115 | ww = h;
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116 | hh = w;
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117 | } else {
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118 | ww = w;
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119 | hh = h;
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120 | }
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121 | final BufferedImage rot = new BufferedImage(ww, hh, BufferedImage.TYPE_INT_RGB);
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122 | final AffineTransform xform = ExifReader.getRestoreOrientationTransform(orientation, w, h);
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123 | final Graphics2D g = rot.createGraphics();
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124 | g.drawImage(image, xform, null);
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125 | g.dispose();
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126 |
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127 | visibleRect.setSize(ww, hh);
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128 | image.flush();
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129 | ImageDisplay.this.image = rot;
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130 | }
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131 | }
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132 |
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133 | selectedRect = null;
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134 | errorLoading = error;
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135 | }
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136 | tracker.removeImage(img);
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137 | ImageDisplay.this.repaint();
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138 | }
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139 | }
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140 |
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141 | private class ImgDisplayMouseListener implements MouseListener, MouseWheelListener, MouseMotionListener {
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142 |
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143 | private boolean mouseIsDragging;
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144 | private long lastTimeForMousePoint;
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145 | private Point mousePointInImg;
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146 |
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147 | /** Zoom in and out, trying to preserve the point of the image that was under the mouse cursor
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148 | * at the same place */
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149 | @Override
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150 | public void mouseWheelMoved(MouseWheelEvent e) {
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151 | File file;
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152 | Image image;
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153 | Rectangle visibleRect;
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154 |
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155 | synchronized (ImageDisplay.this) {
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156 | file = ImageDisplay.this.file;
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157 | image = ImageDisplay.this.image;
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158 | visibleRect = ImageDisplay.this.visibleRect;
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159 | }
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160 |
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161 | mouseIsDragging = false;
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162 | selectedRect = null;
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163 |
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164 | if (image == null)
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165 | return;
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166 |
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167 | // Calculate the mouse cursor position in image coordinates, so that we can center the zoom
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168 | // on that mouse position.
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169 | // To avoid issues when the user tries to zoom in on the image borders, this point is not calculated
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170 | // again if there was less than 1.5seconds since the last event.
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171 | if (e.getWhen() - lastTimeForMousePoint > 1500 || mousePointInImg == null) {
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172 | lastTimeForMousePoint = e.getWhen();
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173 | mousePointInImg = comp2imgCoord(visibleRect, e.getX(), e.getY(), getSize());
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174 | }
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175 |
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176 | // Applicate the zoom to the visible rectangle in image coordinates
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177 | if (e.getWheelRotation() > 0) {
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178 | visibleRect.width = visibleRect.width * 3 / 2;
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179 | visibleRect.height = visibleRect.height * 3 / 2;
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180 | } else {
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181 | visibleRect.width = visibleRect.width * 2 / 3;
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182 | visibleRect.height = visibleRect.height * 2 / 3;
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183 | }
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184 |
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185 | // Check that the zoom doesn't exceed 2:1
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186 | if (visibleRect.width < getSize().width / 2) {
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187 | visibleRect.width = getSize().width / 2;
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188 | }
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189 | if (visibleRect.height < getSize().height / 2) {
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190 | visibleRect.height = getSize().height / 2;
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191 | }
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192 |
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193 | // Set the same ratio for the visible rectangle and the display area
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194 | int hFact = visibleRect.height * getSize().width;
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195 | int wFact = visibleRect.width * getSize().height;
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196 | if (hFact > wFact) {
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197 | visibleRect.width = hFact / getSize().height;
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198 | } else {
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199 | visibleRect.height = wFact / getSize().width;
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200 | }
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201 |
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202 | // The size of the visible rectangle is limited by the image size.
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203 | checkVisibleRectSize(image, visibleRect);
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204 |
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205 | // Set the position of the visible rectangle, so that the mouse cursor doesn't move on the image.
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206 | Rectangle drawRect = calculateDrawImageRectangle(visibleRect, getSize());
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207 | visibleRect.x = mousePointInImg.x + ((drawRect.x - e.getX()) * visibleRect.width) / drawRect.width;
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208 | visibleRect.y = mousePointInImg.y + ((drawRect.y - e.getY()) * visibleRect.height) / drawRect.height;
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209 |
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210 | // The position is also limited by the image size
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211 | checkVisibleRectPos(image, visibleRect);
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212 |
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213 | synchronized (ImageDisplay.this) {
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214 | if (ImageDisplay.this.file == file) {
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215 | ImageDisplay.this.visibleRect = visibleRect;
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216 | }
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217 | }
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218 | ImageDisplay.this.repaint();
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219 | }
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220 |
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221 | /** Center the display on the point that has been clicked */
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222 | @Override
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223 | public void mouseClicked(MouseEvent e) {
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224 | // Move the center to the clicked point.
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225 | File file;
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226 | Image image;
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227 | Rectangle visibleRect;
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228 |
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229 | synchronized (ImageDisplay.this) {
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230 | file = ImageDisplay.this.file;
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231 | image = ImageDisplay.this.image;
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232 | visibleRect = ImageDisplay.this.visibleRect;
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233 | }
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234 |
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235 | if (image == null)
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236 | return;
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237 |
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238 | if (e.getButton() != DRAG_BUTTON)
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239 | return;
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240 |
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241 | // Calculate the translation to set the clicked point the center of the view.
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242 | Point click = comp2imgCoord(visibleRect, e.getX(), e.getY(), getSize());
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243 | Point center = getCenterImgCoord(visibleRect);
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244 |
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245 | visibleRect.x += click.x - center.x;
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246 | visibleRect.y += click.y - center.y;
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247 |
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248 | checkVisibleRectPos(image, visibleRect);
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249 |
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250 | synchronized (ImageDisplay.this) {
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251 | if (ImageDisplay.this.file == file) {
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252 | ImageDisplay.this.visibleRect = visibleRect;
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253 | }
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254 | }
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255 | ImageDisplay.this.repaint();
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256 | }
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257 |
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258 | /** Initialize the dragging, either with button 1 (simple dragging) or button 3 (selection of
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259 | * a picture part) */
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260 | @Override
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261 | public void mousePressed(MouseEvent e) {
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262 | if (image == null) {
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263 | mouseIsDragging = false;
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264 | selectedRect = null;
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265 | return;
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266 | }
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267 |
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268 | Image image;
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269 | Rectangle visibleRect;
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270 |
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271 | synchronized (ImageDisplay.this) {
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272 | image = ImageDisplay.this.image;
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273 | visibleRect = ImageDisplay.this.visibleRect;
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274 | }
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275 |
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276 | if (image == null)
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277 | return;
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278 |
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279 | if (e.getButton() == DRAG_BUTTON) {
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280 | mousePointInImg = comp2imgCoord(visibleRect, e.getX(), e.getY(), getSize());
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281 | mouseIsDragging = true;
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282 | selectedRect = null;
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283 | } else if (e.getButton() == ZOOM_BUTTON) {
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284 | mousePointInImg = comp2imgCoord(visibleRect, e.getX(), e.getY(), getSize());
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285 | checkPointInVisibleRect(mousePointInImg, visibleRect);
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286 | mouseIsDragging = false;
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287 | selectedRect = new Rectangle(mousePointInImg.x, mousePointInImg.y, 0, 0);
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288 | ImageDisplay.this.repaint();
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289 | } else {
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290 | mouseIsDragging = false;
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291 | selectedRect = null;
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292 | }
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293 | }
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294 |
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295 | @Override
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296 | public void mouseDragged(MouseEvent e) {
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297 | if (!mouseIsDragging && selectedRect == null)
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298 | return;
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299 |
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300 | File file;
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301 | Image image;
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302 | Rectangle visibleRect;
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303 |
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304 | synchronized (ImageDisplay.this) {
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305 | file = ImageDisplay.this.file;
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306 | image = ImageDisplay.this.image;
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307 | visibleRect = ImageDisplay.this.visibleRect;
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308 | }
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309 |
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310 | if (image == null) {
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311 | mouseIsDragging = false;
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312 | selectedRect = null;
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313 | return;
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314 | }
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315 |
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316 | if (mouseIsDragging) {
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317 | Point p = comp2imgCoord(visibleRect, e.getX(), e.getY(), getSize());
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318 | visibleRect.x += mousePointInImg.x - p.x;
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319 | visibleRect.y += mousePointInImg.y - p.y;
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320 | checkVisibleRectPos(image, visibleRect);
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321 | synchronized (ImageDisplay.this) {
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322 | if (ImageDisplay.this.file == file) {
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323 | ImageDisplay.this.visibleRect = visibleRect;
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324 | }
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325 | }
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326 | ImageDisplay.this.repaint();
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327 |
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328 | } else if (selectedRect != null) {
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329 | Point p = comp2imgCoord(visibleRect, e.getX(), e.getY(), getSize());
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330 | checkPointInVisibleRect(p, visibleRect);
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331 | Rectangle rect = new Rectangle(
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332 | p.x < mousePointInImg.x ? p.x : mousePointInImg.x,
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333 | p.y < mousePointInImg.y ? p.y : mousePointInImg.y,
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334 | p.x < mousePointInImg.x ? mousePointInImg.x - p.x : p.x - mousePointInImg.x,
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335 | p.y < mousePointInImg.y ? mousePointInImg.y - p.y : p.y - mousePointInImg.y);
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336 | checkVisibleRectSize(image, rect);
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337 | checkVisibleRectPos(image, rect);
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338 | ImageDisplay.this.selectedRect = rect;
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339 | ImageDisplay.this.repaint();
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340 | }
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341 |
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342 | }
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343 |
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344 | @Override
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345 | public void mouseReleased(MouseEvent e) {
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346 | if (!mouseIsDragging && selectedRect == null)
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347 | return;
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348 |
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349 | File file;
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350 | Image image;
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351 |
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352 | synchronized (ImageDisplay.this) {
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353 | file = ImageDisplay.this.file;
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354 | image = ImageDisplay.this.image;
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355 | }
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356 |
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357 | if (image == null) {
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358 | mouseIsDragging = false;
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359 | selectedRect = null;
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360 | return;
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361 | }
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362 |
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363 | if (mouseIsDragging) {
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364 | mouseIsDragging = false;
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365 |
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366 | } else if (selectedRect != null) {
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367 | int oldWidth = selectedRect.width;
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368 | int oldHeight = selectedRect.height;
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369 |
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370 | // Check that the zoom doesn't exceed 2:1
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371 | if (selectedRect.width < getSize().width / 2) {
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372 | selectedRect.width = getSize().width / 2;
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373 | }
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374 | if (selectedRect.height < getSize().height / 2) {
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375 | selectedRect.height = getSize().height / 2;
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376 | }
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377 |
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378 | // Set the same ratio for the visible rectangle and the display area
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379 | int hFact = selectedRect.height * getSize().width;
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380 | int wFact = selectedRect.width * getSize().height;
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381 | if (hFact > wFact) {
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382 | selectedRect.width = hFact / getSize().height;
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383 | } else {
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384 | selectedRect.height = wFact / getSize().width;
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385 | }
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386 |
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387 | // Keep the center of the selection
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388 | if (selectedRect.width != oldWidth) {
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389 | selectedRect.x -= (selectedRect.width - oldWidth) / 2;
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390 | }
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391 | if (selectedRect.height != oldHeight) {
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392 | selectedRect.y -= (selectedRect.height - oldHeight) / 2;
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393 | }
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394 |
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395 | checkVisibleRectSize(image, selectedRect);
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396 | checkVisibleRectPos(image, selectedRect);
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397 |
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398 | synchronized (ImageDisplay.this) {
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399 | if (file == ImageDisplay.this.file) {
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400 | ImageDisplay.this.visibleRect = selectedRect;
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401 | }
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402 | }
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403 | selectedRect = null;
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404 | ImageDisplay.this.repaint();
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405 | }
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406 | }
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407 |
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408 | @Override
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409 | public void mouseEntered(MouseEvent e) {
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410 | // Do nothing
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411 | }
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412 |
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413 | @Override
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414 | public void mouseExited(MouseEvent e) {
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415 | // Do nothing
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416 | }
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417 |
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418 | @Override
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419 | public void mouseMoved(MouseEvent e) {
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420 | // Do nothing
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421 | }
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422 |
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423 | private void checkPointInVisibleRect(Point p, Rectangle visibleRect) {
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424 | if (p.x < visibleRect.x) {
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425 | p.x = visibleRect.x;
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426 | }
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427 | if (p.x > visibleRect.x + visibleRect.width) {
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428 | p.x = visibleRect.x + visibleRect.width;
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429 | }
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430 | if (p.y < visibleRect.y) {
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431 | p.y = visibleRect.y;
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432 | }
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433 | if (p.y > visibleRect.y + visibleRect.height) {
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434 | p.y = visibleRect.y + visibleRect.height;
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435 | }
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436 | }
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437 | }
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438 |
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439 | /**
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440 | * Constructs a new {@code ImageDisplay}.
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441 | */
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442 | public ImageDisplay() {
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443 | ImgDisplayMouseListener mouseListener = new ImgDisplayMouseListener();
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444 | addMouseListener(mouseListener);
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445 | addMouseWheelListener(mouseListener);
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446 | addMouseMotionListener(mouseListener);
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447 | }
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448 |
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449 | public void setImage(File file, Integer orientation) {
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450 | synchronized (this) {
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451 | this.file = file;
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452 | image = null;
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453 | selectedRect = null;
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454 | errorLoading = false;
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455 | }
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456 | repaint();
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457 | if (file != null) {
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458 | new Thread(new LoadImageRunnable(file, orientation), LoadImageRunnable.class.getName()).start();
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459 | }
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460 | }
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461 |
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462 | public void setOsdText(String text) {
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463 | this.osdText = text;
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464 | repaint();
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465 | }
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466 |
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467 | @Override
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468 | public void paintComponent(Graphics g) {
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469 | Image image;
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470 | File file;
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471 | Rectangle visibleRect;
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472 | boolean errorLoading;
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473 |
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474 | synchronized (this) {
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475 | image = this.image;
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476 | file = this.file;
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477 | visibleRect = this.visibleRect;
|
---|
478 | errorLoading = this.errorLoading;
|
---|
479 | }
|
---|
480 |
|
---|
481 | Dimension size = getSize();
|
---|
482 | if (file == null) {
|
---|
483 | g.setColor(Color.black);
|
---|
484 | String noImageStr = tr("No image");
|
---|
485 | Rectangle2D noImageSize = g.getFontMetrics(g.getFont()).getStringBounds(noImageStr, g);
|
---|
486 | g.drawString(noImageStr,
|
---|
487 | (int) ((size.width - noImageSize.getWidth()) / 2),
|
---|
488 | (int) ((size.height - noImageSize.getHeight()) / 2));
|
---|
489 | } else if (image == null) {
|
---|
490 | g.setColor(Color.black);
|
---|
491 | String loadingStr;
|
---|
492 | if (!errorLoading) {
|
---|
493 | loadingStr = tr("Loading {0}", file.getName());
|
---|
494 | } else {
|
---|
495 | loadingStr = tr("Error on file {0}", file.getName());
|
---|
496 | }
|
---|
497 | Rectangle2D noImageSize = g.getFontMetrics(g.getFont()).getStringBounds(loadingStr, g);
|
---|
498 | g.drawString(loadingStr,
|
---|
499 | (int) ((size.width - noImageSize.getWidth()) / 2),
|
---|
500 | (int) ((size.height - noImageSize.getHeight()) / 2));
|
---|
501 | } else {
|
---|
502 | Rectangle target = calculateDrawImageRectangle(visibleRect, size);
|
---|
503 | g.drawImage(image,
|
---|
504 | target.x, target.y, target.x + target.width, target.y + target.height,
|
---|
505 | visibleRect.x, visibleRect.y, visibleRect.x + visibleRect.width, visibleRect.y + visibleRect.height,
|
---|
506 | null);
|
---|
507 | if (selectedRect != null) {
|
---|
508 | Point topLeft = img2compCoord(visibleRect, selectedRect.x, selectedRect.y, size);
|
---|
509 | Point bottomRight = img2compCoord(visibleRect,
|
---|
510 | selectedRect.x + selectedRect.width,
|
---|
511 | selectedRect.y + selectedRect.height, size);
|
---|
512 | g.setColor(new Color(128, 128, 128, 180));
|
---|
513 | g.fillRect(target.x, target.y, target.width, topLeft.y - target.y);
|
---|
514 | g.fillRect(target.x, target.y, topLeft.x - target.x, target.height);
|
---|
515 | g.fillRect(bottomRight.x, target.y, target.x + target.width - bottomRight.x, target.height);
|
---|
516 | g.fillRect(target.x, bottomRight.y, target.width, target.y + target.height - bottomRight.y);
|
---|
517 | g.setColor(Color.black);
|
---|
518 | g.drawRect(topLeft.x, topLeft.y, bottomRight.x - topLeft.x, bottomRight.y - topLeft.y);
|
---|
519 | }
|
---|
520 | if (errorLoading) {
|
---|
521 | String loadingStr = tr("Error on file {0}", file.getName());
|
---|
522 | Rectangle2D noImageSize = g.getFontMetrics(g.getFont()).getStringBounds(loadingStr, g);
|
---|
523 | g.drawString(loadingStr,
|
---|
524 | (int) ((size.width - noImageSize.getWidth()) / 2),
|
---|
525 | (int) ((size.height - noImageSize.getHeight()) / 2));
|
---|
526 | }
|
---|
527 | if (osdText != null) {
|
---|
528 | FontMetrics metrics = g.getFontMetrics(g.getFont());
|
---|
529 | int ascent = metrics.getAscent();
|
---|
530 | Color bkground = new Color(255, 255, 255, 128);
|
---|
531 | int lastPos = 0;
|
---|
532 | int pos = osdText.indexOf('\n');
|
---|
533 | int x = 3;
|
---|
534 | int y = 3;
|
---|
535 | String line;
|
---|
536 | while (pos > 0) {
|
---|
537 | line = osdText.substring(lastPos, pos);
|
---|
538 | Rectangle2D lineSize = metrics.getStringBounds(line, g);
|
---|
539 | g.setColor(bkground);
|
---|
540 | g.fillRect(x, y, (int) lineSize.getWidth(), (int) lineSize.getHeight());
|
---|
541 | g.setColor(Color.black);
|
---|
542 | g.drawString(line, x, y + ascent);
|
---|
543 | y += (int) lineSize.getHeight();
|
---|
544 | lastPos = pos + 1;
|
---|
545 | pos = osdText.indexOf('\n', lastPos);
|
---|
546 | }
|
---|
547 |
|
---|
548 | line = osdText.substring(lastPos);
|
---|
549 | Rectangle2D lineSize = g.getFontMetrics(g.getFont()).getStringBounds(line, g);
|
---|
550 | g.setColor(bkground);
|
---|
551 | g.fillRect(x, y, (int) lineSize.getWidth(), (int) lineSize.getHeight());
|
---|
552 | g.setColor(Color.black);
|
---|
553 | g.drawString(line, x, y + ascent);
|
---|
554 | }
|
---|
555 | }
|
---|
556 | }
|
---|
557 |
|
---|
558 | static Point img2compCoord(Rectangle visibleRect, int xImg, int yImg, Dimension compSize) {
|
---|
559 | Rectangle drawRect = calculateDrawImageRectangle(visibleRect, compSize);
|
---|
560 | return new Point(drawRect.x + ((xImg - visibleRect.x) * drawRect.width) / visibleRect.width,
|
---|
561 | drawRect.y + ((yImg - visibleRect.y) * drawRect.height) / visibleRect.height);
|
---|
562 | }
|
---|
563 |
|
---|
564 | static Point comp2imgCoord(Rectangle visibleRect, int xComp, int yComp, Dimension compSize) {
|
---|
565 | Rectangle drawRect = calculateDrawImageRectangle(visibleRect, compSize);
|
---|
566 | return new Point(visibleRect.x + ((xComp - drawRect.x) * visibleRect.width) / drawRect.width,
|
---|
567 | visibleRect.y + ((yComp - drawRect.y) * visibleRect.height) / drawRect.height);
|
---|
568 | }
|
---|
569 |
|
---|
570 | static Point getCenterImgCoord(Rectangle visibleRect) {
|
---|
571 | return new Point(visibleRect.x + visibleRect.width / 2,
|
---|
572 | visibleRect.y + visibleRect.height / 2);
|
---|
573 | }
|
---|
574 |
|
---|
575 | static Rectangle calculateDrawImageRectangle(Rectangle visibleRect, Dimension compSize) {
|
---|
576 | return calculateDrawImageRectangle(visibleRect, new Rectangle(0, 0, compSize.width, compSize.height));
|
---|
577 | }
|
---|
578 |
|
---|
579 | /**
|
---|
580 | * calculateDrawImageRectangle
|
---|
581 | *
|
---|
582 | * @param imgRect the part of the image that should be drawn (in image coordinates)
|
---|
583 | * @param compRect the part of the component where the image should be drawn (in component coordinates)
|
---|
584 | * @return the part of compRect with the same width/height ratio as the image
|
---|
585 | */
|
---|
586 | static Rectangle calculateDrawImageRectangle(Rectangle imgRect, Rectangle compRect) {
|
---|
587 | int x = 0;
|
---|
588 | int y = 0;
|
---|
589 | int w = compRect.width;
|
---|
590 | int h = compRect.height;
|
---|
591 |
|
---|
592 | int wFact = w * imgRect.height;
|
---|
593 | int hFact = h * imgRect.width;
|
---|
594 | if (wFact != hFact) {
|
---|
595 | if (wFact > hFact) {
|
---|
596 | w = hFact / imgRect.height;
|
---|
597 | x = (compRect.width - w) / 2;
|
---|
598 | } else {
|
---|
599 | h = wFact / imgRect.width;
|
---|
600 | y = (compRect.height - h) / 2;
|
---|
601 | }
|
---|
602 | }
|
---|
603 | return new Rectangle(x + compRect.x, y + compRect.y, w, h);
|
---|
604 | }
|
---|
605 |
|
---|
606 | public void zoomBestFitOrOne() {
|
---|
607 | File file;
|
---|
608 | Image image;
|
---|
609 | Rectangle visibleRect;
|
---|
610 |
|
---|
611 | synchronized (this) {
|
---|
612 | file = this.file;
|
---|
613 | image = this.image;
|
---|
614 | visibleRect = this.visibleRect;
|
---|
615 | }
|
---|
616 |
|
---|
617 | if (image == null)
|
---|
618 | return;
|
---|
619 |
|
---|
620 | if (visibleRect.width != image.getWidth(null) || visibleRect.height != image.getHeight(null)) {
|
---|
621 | // The display is not at best fit. => Zoom to best fit
|
---|
622 | visibleRect = new Rectangle(0, 0, image.getWidth(null), image.getHeight(null));
|
---|
623 |
|
---|
624 | } else {
|
---|
625 | // The display is at best fit => zoom to 1:1
|
---|
626 | Point center = getCenterImgCoord(visibleRect);
|
---|
627 | visibleRect = new Rectangle(center.x - getWidth() / 2, center.y - getHeight() / 2,
|
---|
628 | getWidth(), getHeight());
|
---|
629 | checkVisibleRectPos(image, visibleRect);
|
---|
630 | }
|
---|
631 |
|
---|
632 | synchronized (this) {
|
---|
633 | if (file == this.file) {
|
---|
634 | this.visibleRect = visibleRect;
|
---|
635 | }
|
---|
636 | }
|
---|
637 | repaint();
|
---|
638 | }
|
---|
639 |
|
---|
640 | static void checkVisibleRectPos(Image image, Rectangle visibleRect) {
|
---|
641 | if (visibleRect.x < 0) {
|
---|
642 | visibleRect.x = 0;
|
---|
643 | }
|
---|
644 | if (visibleRect.y < 0) {
|
---|
645 | visibleRect.y = 0;
|
---|
646 | }
|
---|
647 | if (visibleRect.x + visibleRect.width > image.getWidth(null)) {
|
---|
648 | visibleRect.x = image.getWidth(null) - visibleRect.width;
|
---|
649 | }
|
---|
650 | if (visibleRect.y + visibleRect.height > image.getHeight(null)) {
|
---|
651 | visibleRect.y = image.getHeight(null) - visibleRect.height;
|
---|
652 | }
|
---|
653 | }
|
---|
654 |
|
---|
655 | static void checkVisibleRectSize(Image image, Rectangle visibleRect) {
|
---|
656 | if (visibleRect.width > image.getWidth(null)) {
|
---|
657 | visibleRect.width = image.getWidth(null);
|
---|
658 | }
|
---|
659 | if (visibleRect.height > image.getHeight(null)) {
|
---|
660 | visibleRect.height = image.getHeight(null);
|
---|
661 | }
|
---|
662 | }
|
---|
663 | }
|
---|