001    // License: GPL. See LICENSE file for details.
002    // Copyright 2007 by Christian Gallioz (aka khris78)
003    // Parts of code from Geotagged plugin (by Rob Neild)
004    // and the core JOSM source code (by Immanuel Scholz and others)
005    
006    package org.openstreetmap.josm.gui.layer.geoimage;
007    
008    import static org.openstreetmap.josm.tools.I18n.tr;
009    
010    import java.awt.BorderLayout;
011    import java.awt.Component;
012    import java.awt.Dimension;
013    import java.awt.GridBagConstraints;
014    import java.awt.GridBagLayout;
015    import java.awt.event.ActionEvent;
016    import java.awt.event.KeyEvent;
017    import java.awt.event.WindowEvent;
018    import java.text.DateFormat;
019    
020    import javax.swing.AbstractAction;
021    import javax.swing.Box;
022    import javax.swing.ImageIcon;
023    import javax.swing.JButton;
024    import javax.swing.JComponent;
025    import javax.swing.JPanel;
026    import javax.swing.JToggleButton;
027    
028    import org.openstreetmap.josm.Main;
029    import org.openstreetmap.josm.gui.dialogs.ToggleDialog;
030    import org.openstreetmap.josm.gui.dialogs.DialogsPanel.Action;
031    import org.openstreetmap.josm.tools.ImageProvider;
032    import org.openstreetmap.josm.tools.Shortcut;
033    
034    public class ImageViewerDialog extends ToggleDialog {
035    
036        private static final String COMMAND_ZOOM = "zoom";
037        private static final String COMMAND_CENTERVIEW = "centre";
038        private static final String COMMAND_NEXT = "next";
039        private static final String COMMAND_REMOVE = "remove";
040        private static final String COMMAND_REMOVE_FROM_DISK = "removefromdisk";
041        private static final String COMMAND_PREVIOUS = "previous";
042        private static final String COMMAND_COLLAPSE = "collapse";
043    
044        private ImageDisplay imgDisplay = new ImageDisplay();
045        private boolean centerView = false;
046    
047        // Only one instance of that class is present at one time
048        private static ImageViewerDialog dialog;
049    
050        private boolean collapseButtonClicked = false;
051    
052        static void newInstance() {
053            dialog = new ImageViewerDialog();
054        }
055    
056        public static ImageViewerDialog getInstance() {
057            if (dialog == null)
058                throw new AssertionError(); // a new instance needs to be created first
059            return dialog;
060        }
061    
062        private JButton btnNext;
063        private JButton btnPrevious;
064        private JButton btnCollapse;
065    
066        private ImageViewerDialog() {
067            super(tr("Geotagged Images"), "geoimage", tr("Display geotagged images"), Shortcut.registerShortcut("tools:geotagged",
068            tr("Tool: {0}", tr("Display geotagged images")), KeyEvent.VK_Y, Shortcut.DIRECT), 200);
069    
070            /* Don't show a detached dialog right from the start. */
071            if (isShowing && !isDocked) {
072                setIsShowing(false);
073            }
074    
075            JPanel content = new JPanel();
076            content.setLayout(new BorderLayout());
077    
078            content.add(imgDisplay, BorderLayout.CENTER);
079    
080            Dimension buttonDim = new Dimension(26,26);
081    
082            ImageAction prevAction = new ImageAction(COMMAND_PREVIOUS, ImageProvider.get("dialogs", "previous"), tr("Previous"));
083            btnPrevious = new JButton(prevAction);
084            btnPrevious.setPreferredSize(buttonDim);
085            Shortcut scPrev = Shortcut.registerShortcut(
086                    "geoimage:previous", tr("Geoimage: {0}", tr("Show previous Image")), KeyEvent.VK_PAGE_UP, Shortcut.DIRECT);
087            final String APREVIOUS = "Previous Image";
088            Main.registerActionShortcut(prevAction, scPrev);
089            btnPrevious.getInputMap(JComponent.WHEN_IN_FOCUSED_WINDOW).put(scPrev.getKeyStroke(), APREVIOUS);
090            btnPrevious.getActionMap().put(APREVIOUS, prevAction);
091    
092            final String DELETE_TEXT = tr("Remove photo from layer");
093            ImageAction delAction = new ImageAction(COMMAND_REMOVE, ImageProvider.get("dialogs", "delete"), DELETE_TEXT);
094            JButton btnDelete = new JButton(delAction);
095            btnDelete.setPreferredSize(buttonDim);
096            Shortcut scDelete = Shortcut.registerShortcut(
097                    "geoimage:deleteimagefromlayer", tr("Geoimage: {0}", tr("Remove photo from layer")), KeyEvent.VK_DELETE, Shortcut.SHIFT);
098            Main.registerActionShortcut(delAction, scDelete);
099            btnDelete.getInputMap(JComponent.WHEN_IN_FOCUSED_WINDOW).put(scDelete.getKeyStroke(), DELETE_TEXT);
100            btnDelete.getActionMap().put(DELETE_TEXT, delAction);
101    
102            ImageAction delFromDiskAction = new ImageAction(COMMAND_REMOVE_FROM_DISK, ImageProvider.get("dialogs", "geoimage/deletefromdisk"), tr("Delete image file from disk"));
103            JButton btnDeleteFromDisk = new JButton(delFromDiskAction);
104            btnDeleteFromDisk.setPreferredSize(buttonDim);
105            Shortcut scDeleteFromDisk = Shortcut.registerShortcut(
106                    "geoimage:deletefilefromdisk", tr("Geoimage: {0}", tr("Delete File from disk")), KeyEvent.VK_DELETE, Shortcut.CTRL_SHIFT);
107            final String ADELFROMDISK = "Delete image file from disk";
108            Main.registerActionShortcut(delFromDiskAction, scDeleteFromDisk);
109            btnDeleteFromDisk.getInputMap(JComponent.WHEN_IN_FOCUSED_WINDOW).put(scDeleteFromDisk.getKeyStroke(), ADELFROMDISK);
110            btnDeleteFromDisk.getActionMap().put(ADELFROMDISK, delFromDiskAction);
111    
112            ImageAction nextAction = new ImageAction(COMMAND_NEXT, ImageProvider.get("dialogs", "next"), tr("Next"));
113            btnNext = new JButton(nextAction);
114            btnNext.setPreferredSize(buttonDim);
115            Shortcut scNext = Shortcut.registerShortcut(
116                    "geoimage:next", tr("Geoimage: {0}", tr("Show next Image")), KeyEvent.VK_PAGE_DOWN, Shortcut.DIRECT);
117            final String ANEXT = "Next Image";
118            Main.registerActionShortcut(nextAction, scNext);
119            btnNext.getInputMap(JComponent.WHEN_IN_FOCUSED_WINDOW).put(scNext.getKeyStroke(), ANEXT);
120            btnNext.getActionMap().put(ANEXT, nextAction);
121    
122            JToggleButton tbCentre = new JToggleButton(new ImageAction(COMMAND_CENTERVIEW, ImageProvider.get("dialogs", "centreview"), tr("Center view")));
123            tbCentre.setPreferredSize(buttonDim);
124    
125            JButton btnZoomBestFit = new JButton(new ImageAction(COMMAND_ZOOM, ImageProvider.get("dialogs", "zoom-best-fit"), tr("Zoom best fit and 1:1")));
126            btnZoomBestFit.setPreferredSize(buttonDim);
127    
128            btnCollapse = new JButton(new ImageAction(COMMAND_COLLAPSE, ImageProvider.get("dialogs", "collapse"), tr("Move dialog to the side pane")));
129            btnCollapse.setPreferredSize(new Dimension(20,20));
130            btnCollapse.setAlignmentY(Component.TOP_ALIGNMENT);
131    
132            JPanel buttons = new JPanel();
133            buttons.add(btnPrevious);
134            buttons.add(btnNext);
135            buttons.add(Box.createRigidArea(new Dimension(14, 0)));
136            buttons.add(tbCentre);
137            buttons.add(btnZoomBestFit);
138            buttons.add(Box.createRigidArea(new Dimension(14, 0)));
139            buttons.add(btnDelete);
140            buttons.add(btnDeleteFromDisk);
141    
142            JPanel bottomPane = new JPanel();
143            bottomPane.setLayout(new GridBagLayout());
144            GridBagConstraints gc = new GridBagConstraints();
145            gc.gridx = 0;
146            gc.gridy = 0;
147            gc.anchor = GridBagConstraints.CENTER;
148            gc.weightx = 1;
149            bottomPane.add(buttons, gc);
150    
151            gc.gridx = 1;
152            gc.gridy = 0;
153            gc.anchor = GridBagConstraints.PAGE_END;
154            gc.weightx = 0;
155            bottomPane.add(btnCollapse, gc);
156    
157            content.add(bottomPane, BorderLayout.SOUTH);
158    
159            add(content, BorderLayout.CENTER);
160        }
161    
162        class ImageAction extends AbstractAction {
163            private final String action;
164            public ImageAction(String action, ImageIcon icon, String toolTipText) {
165                this.action = action;
166                putValue(SHORT_DESCRIPTION, toolTipText);
167                putValue(SMALL_ICON, icon);
168            }
169    
170            public void actionPerformed(ActionEvent e) {
171                if (COMMAND_NEXT.equals(action)) {
172                    if (currentLayer != null) {
173                        currentLayer.showNextPhoto();
174                    }
175                } else if (COMMAND_PREVIOUS.equals(action)) {
176                    if (currentLayer != null) {
177                        currentLayer.showPreviousPhoto();
178                    }
179    
180                } else if (COMMAND_CENTERVIEW.equals(action)) {
181                    centerView = ((JToggleButton) e.getSource()).isSelected();
182                    if (centerView && currentEntry != null && currentEntry.getPos() != null) {
183                        Main.map.mapView.zoomTo(currentEntry.getPos());
184                    }
185    
186                } else if (COMMAND_ZOOM.equals(action)) {
187                    imgDisplay.zoomBestFitOrOne();
188    
189                } else if (COMMAND_REMOVE.equals(action)) {
190                    if (currentLayer != null) {
191                        currentLayer.removeCurrentPhoto();
192                    }
193                } else if (COMMAND_REMOVE_FROM_DISK.equals(action)) {
194                    if (currentLayer != null) {
195                        currentLayer.removeCurrentPhotoFromDisk();
196                    }
197                } else if (COMMAND_COLLAPSE.equals(action)) {
198                    collapseButtonClicked = true;
199                    detachedDialog.getToolkit().getSystemEventQueue().postEvent(new WindowEvent(detachedDialog, WindowEvent.WINDOW_CLOSING));
200                }
201            }
202        }
203    
204        public static void showImage(GeoImageLayer layer, ImageEntry entry) {
205            getInstance().displayImage(layer, entry);
206            layer.checkPreviousNextButtons();
207        }
208        public static void setPreviousEnabled(Boolean value) {
209            getInstance().btnPrevious.setEnabled(value);
210        }
211        public static void setNextEnabled(Boolean value) {
212            getInstance().btnNext.setEnabled(value);
213        }
214    
215        private GeoImageLayer currentLayer = null;
216        private ImageEntry currentEntry = null;
217    
218        public void displayImage(GeoImageLayer layer, ImageEntry entry) {
219            synchronized(this) {
220                //            if (currentLayer == layer && currentEntry == entry) {
221                //                repaint();
222                //                return;
223                //            }                     TODO: pop up image dialog but don't load image again
224    
225                if (centerView && Main.isDisplayingMapView() && entry != null && entry.getPos() != null) {
226                    Main.map.mapView.zoomTo(entry.getPos());
227                }
228    
229                currentLayer = layer;
230                currentEntry = entry;
231            }
232    
233            if (entry != null) {
234                imgDisplay.setImage(entry.getFile(), entry.getExifOrientation());
235                setTitle("Geotagged Images" + (entry.getFile() != null ? " - " + entry.getFile().getName() : ""));
236                StringBuffer osd = new StringBuffer(entry.getFile() != null ? entry.getFile().getName() : "");
237                if (entry.getElevation() != null) {
238                    osd.append(tr("\nAltitude: {0} m", entry.getElevation().longValue()));
239                }
240                if (entry.getSpeed() != null) {
241                    osd.append(tr("\n{0} km/h", Math.round(entry.getSpeed())));
242                }
243                if (entry.getExifImgDir() != null) {
244                    osd.append(tr("\nDirection {0}\u00b0", Math.round(entry.getExifImgDir())));
245                }
246                //if (entry.getPos()  != null) {
247                //    osd.append(tr("\nlat: {0}, lon: {1}", Double.toString(entry.getPos().lat()), Double.toString(entry.getPos().lon())));
248                //}
249                //osd.append(tr("\nfile mtime: {0}", Long.toString(entry.getFile().lastModified())));
250                DateFormat dtf = DateFormat.getDateTimeInstance(DateFormat.SHORT, DateFormat.SHORT);
251                if (entry.getExifTime() != null) {
252                    osd.append(tr("\nEXIF time: {0}", dtf.format(entry.getExifTime())));
253                }
254                if (entry.getGpsTime() != null) {
255                    osd.append(tr("\nGPS time: {0}", dtf.format(entry.getGpsTime())));
256                }
257    
258                imgDisplay.setOsdText(osd.toString());
259            } else {
260                imgDisplay.setImage(null, null);
261                imgDisplay.setOsdText("");
262            }
263            if (! isDialogShowing()) {
264                setIsDocked(false);     // always open a detached window when an image is clicked and dialog is closed
265                showDialog();
266            } else {
267                if (isDocked && isCollapsed) {
268                    expand();
269                    dialogsPanel.reconstruct(Action.COLLAPSED_TO_DEFAULT, this);
270                }
271            }
272    
273        }
274    
275        /**
276         * When pressing the Toggle button always show the docked dialog.
277         */
278        @Override
279        protected void toggleButtonHook() {
280            if (! isShowing) {
281                setIsDocked(true);
282                setIsCollapsed(false);
283            }
284        }
285    
286        /**
287         * When an image is closed, really close it and do not pop
288         * up the side dialog.
289         */
290        @Override
291        protected boolean dockWhenClosingDetachedDlg() {
292            if (collapseButtonClicked) {
293                collapseButtonClicked = false;
294                return true;
295            }
296            return false;
297        }
298    
299        @Override
300        protected void stateChanged() {
301            super.stateChanged();
302            if (btnCollapse != null) {
303                btnCollapse.setVisible(!isDocked);
304            }
305        }
306    
307        /**
308         * Returns whether an image is currently displayed
309         * @return If image is currently displayed
310         */
311        public boolean hasImage() {
312            return currentEntry != null;
313        }
314    }