| 1 | // License: GPL. Copyright 2007 by Immanuel Scholz and others
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| 2 | package org.openstreetmap.josm.actions;
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| 3 |
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| 4 | import static org.openstreetmap.josm.gui.help.HelpUtil.ht;
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| 5 | import static org.openstreetmap.josm.tools.I18n.marktr;
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| 6 | import static org.openstreetmap.josm.tools.I18n.tr;
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| 7 |
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| 8 | import java.awt.event.ActionEvent;
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| 9 | import java.awt.event.KeyEvent;
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| 10 | import java.util.Collection;
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| 11 | import java.util.HashSet;
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| 12 | import java.util.List;
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| 13 |
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| 14 | import javax.swing.JOptionPane;
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| 15 |
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| 16 | import org.openstreetmap.josm.Main;
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| 17 | import org.openstreetmap.josm.data.Bounds;
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| 18 | import org.openstreetmap.josm.data.osm.OsmPrimitive;
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| 19 | import org.openstreetmap.josm.data.osm.visitor.BoundingXYVisitor;
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| 20 | import org.openstreetmap.josm.gui.MapView;
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| 21 | import org.openstreetmap.josm.gui.dialogs.LayerListDialog;
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| 22 | import org.openstreetmap.josm.gui.layer.Layer;
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| 23 | import org.openstreetmap.josm.tools.Shortcut;
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| 24 |
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| 25 | /**
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| 26 | * Toggles the autoScale feature of the mapView
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| 27 | * @author imi
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| 28 | */
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| 29 | public class AutoScaleAction extends JosmAction {
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| 30 |
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| 31 | public static final String[] MODES = {
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| 32 | marktr("data"),
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| 33 | marktr("layer"),
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| 34 | marktr("selection"),
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| 35 | marktr("conflict"),
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| 36 | marktr("download"),
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| 37 | marktr("previous"),
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| 38 | marktr("next")};
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| 39 |
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| 40 | /**
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| 41 | * Zooms the current map view to the currently selected primitives.
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| 42 | * Does nothing if there either isn't a current map view or if there isn't a current data
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| 43 | * layer.
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| 44 | *
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| 45 | */
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| 46 | public static void zoomToSelection() {
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| 47 | if (Main.main == null || Main.main.getEditLayer() == null) return;
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| 48 | if (Main.map == null || Main.map.mapView == null) return;
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| 49 | Collection<OsmPrimitive> sel = Main.main.getEditLayer().data.getSelected();
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| 50 | if (sel.isEmpty()) {
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| 51 | JOptionPane.showMessageDialog(
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| 52 | Main.parent,
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| 53 | tr("Nothing selected to zoom to."),
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| 54 | tr("Information"),
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| 55 | JOptionPane.INFORMATION_MESSAGE
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| 56 | );
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| 57 | return;
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| 58 | }
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| 59 | BoundingXYVisitor bboxCalculator = new BoundingXYVisitor();
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| 60 | bboxCalculator.computeBoundingBox(sel);
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| 61 | // increase bbox by 0.001 degrees on each side. this is required
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| 62 | // especially if the bbox contains one single node, but helpful
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| 63 | // in most other cases as well.
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| 64 | bboxCalculator.enlargeBoundingBox();
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| 65 | if (bboxCalculator.getBounds() != null) {
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| 66 | Main.map.mapView.recalculateCenterScale(bboxCalculator);
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| 67 | }
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| 68 | }
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| 69 |
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| 70 | private final String mode;
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| 71 |
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| 72 | private static int getModeShortcut(String mode) {
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| 73 | int shortcut = -1;
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| 74 |
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| 75 | if (mode.equals("data")) {
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| 76 | shortcut = KeyEvent.VK_1;
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| 77 | }
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| 78 | if (mode.equals("layer")) {
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| 79 | shortcut = KeyEvent.VK_2;
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| 80 | }
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| 81 | if (mode.equals("selection")) {
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| 82 | shortcut = KeyEvent.VK_3;
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| 83 | }
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| 84 | if (mode.equals("conflict")) {
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| 85 | shortcut = KeyEvent.VK_4;
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| 86 | }
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| 87 | if (mode.equals("download")) {
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| 88 | shortcut = KeyEvent.VK_5;
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| 89 | }
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| 90 | if (mode.equals("previous")) {
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| 91 | shortcut = KeyEvent.VK_8;
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| 92 | }
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| 93 | if (mode.equals("next")) {
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| 94 | shortcut = KeyEvent.VK_9;
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| 95 | }
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| 96 |
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| 97 | return shortcut;
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| 98 | }
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| 99 |
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| 100 | public AutoScaleAction(String mode) {
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| 101 | super(tr("Zoom to {0}", tr(mode)), "dialogs/autoscale/" + mode, tr("Zoom the view to {0}.", tr(mode)),
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| 102 | Shortcut.registerShortcut("view:zoom"+mode, tr("View: {0}", tr("Zoom to {0}", tr(mode))), getModeShortcut(mode), Shortcut.GROUP_EDIT), true);
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| 103 | String modeHelp = Character.toUpperCase(mode.charAt(0)) + mode.substring(1);
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| 104 | putValue("help", "Action/AutoScale/" + modeHelp);
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| 105 | this.mode = mode;
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| 106 | if (mode.equals("data")) {
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| 107 | putValue("help", ht("/Action/ZoomToData"));
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| 108 | } else if (mode.equals("layer")) {
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| 109 | putValue("help", ht("/Action/ZoomToLayer"));
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| 110 | } else if (mode.equals("selection")) {
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| 111 | putValue("help", ht("/Action/ZoomToSelection"));
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| 112 | } else if (mode.equals("conflict")) {
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| 113 | putValue("help", ht("/Action/ZoomToConflict"));
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| 114 | } else if (mode.equals("download")) {
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| 115 | putValue("help", ht("/Action/ZoomToDownload"));
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| 116 | } else if (mode.equals("previous")) {
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| 117 | putValue("help", ht("/Action/ZoomPrevious"));
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| 118 | } else if (mode.equals("next")) {
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| 119 | putValue("help", ht("/Action/ZoomNext"));
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| 120 | }
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| 121 | }
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| 122 |
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| 123 | public void autoScale() {
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| 124 | if (Main.map != null) {
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| 125 | if (mode.equals("previous")) {
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| 126 | Main.map.mapView.zoomPrevious();
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| 127 | } else if (mode.equals("next")) {
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| 128 | Main.map.mapView.zoomNext();
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| 129 | } else {
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| 130 | BoundingXYVisitor bbox = getBoundingBox();
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| 131 | if (bbox != null && bbox.getBounds() != null) {
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| 132 | Main.map.mapView.recalculateCenterScale(bbox);
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| 133 | }
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| 134 | }
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| 135 | }
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| 136 | putValue("active", true);
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| 137 | }
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| 138 |
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| 139 | public void actionPerformed(ActionEvent e) {
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| 140 | autoScale();
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| 141 | }
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| 142 |
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| 143 | protected Layer getActiveLayer() {
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| 144 | try {
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| 145 | return Main.map.mapView.getActiveLayer();
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| 146 | } catch(NullPointerException e) {
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| 147 | return null;
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| 148 | }
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| 149 | }
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| 150 |
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| 151 | /**
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| 152 | * Replies the first selected layer in the layer list dialog. null, if no
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| 153 | * such layer exists, either because the layer list dialog is not yet created
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| 154 | * or because no layer is selected.
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| 155 | *
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| 156 | * @return the first selected layer in the layer list dialog
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| 157 | */
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| 158 | protected Layer getFirstSelectedLayer() {
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| 159 | if (LayerListDialog.getInstance() == null) return null;
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| 160 | List<Layer> layers = LayerListDialog.getInstance().getModel().getSelectedLayers();
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| 161 | if (layers.isEmpty()) return null;
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| 162 | return layers.get(0);
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| 163 | }
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| 164 |
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| 165 | private BoundingXYVisitor getBoundingBox() {
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| 166 | BoundingXYVisitor v = new BoundingXYVisitor();
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| 167 | if (mode.equals("data")) {
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| 168 | for (Layer l : Main.map.mapView.getAllLayers()) {
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| 169 | l.visitBoundingBox(v);
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| 170 | }
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| 171 | } else if (mode.equals("layer")) {
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| 172 | if (getActiveLayer() == null)
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| 173 | return null;
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| 174 | // try to zoom to the first selected layer
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| 175 | //
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| 176 | Layer l = getFirstSelectedLayer();
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| 177 | if (l == null) return null;
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| 178 | l.visitBoundingBox(v);
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| 179 | } else if (mode.equals("selection") || mode.equals("conflict")) {
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| 180 | Collection<OsmPrimitive> sel = new HashSet<OsmPrimitive>();
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| 181 | if (mode.equals("selection")) {
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| 182 | sel = getCurrentDataSet().getSelected();
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| 183 | } else if (mode.equals("conflict")) {
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| 184 | if (Main.map.conflictDialog.getConflicts() != null) {
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| 185 | sel = Main.map.conflictDialog.getConflicts().getMyConflictParties();
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| 186 | }
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| 187 | }
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| 188 | if (sel.isEmpty()) {
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| 189 | JOptionPane.showMessageDialog(
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| 190 | Main.parent,
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| 191 | (mode.equals("selection") ? tr("Nothing selected to zoom to.") : tr("No conflicts to zoom to")),
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| 192 | tr("Information"),
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| 193 | JOptionPane.INFORMATION_MESSAGE
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| 194 | );
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| 195 | return null;
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| 196 | }
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| 197 | for (OsmPrimitive osm : sel) {
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| 198 | osm.visit(v);
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| 199 | }
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| 200 | // increase bbox by 0.001 degrees on each side. this is required
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| 201 | // especially if the bbox contains one single node, but helpful
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| 202 | // in most other cases as well.
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| 203 | v.enlargeBoundingBox();
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| 204 | }
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| 205 | else if (mode.equals("download")) {
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| 206 | if (Main.pref.hasKey("osm-download.bounds")) {
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| 207 | try {
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| 208 | v.visit(new Bounds(Main.pref.get("osm-download.bounds"), ";"));
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| 209 | } catch (Exception e) {
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| 210 | e.printStackTrace();
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| 211 | }
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| 212 | }
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| 213 | }
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| 214 | return v;
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| 215 | }
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| 216 |
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| 217 | @Override
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| 218 | protected void updateEnabledState() {
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| 219 | if ("selection".equals(mode)) {
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| 220 | setEnabled(getCurrentDataSet() != null && ! getCurrentDataSet().getSelected().isEmpty());
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| 221 | } else if ("layer".equals(mode)) {
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| 222 | if (Main.map == null || Main.map.mapView == null || Main.map.mapView.getAllLayersAsList().isEmpty()) {
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| 223 | setEnabled(false);
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| 224 | } else {
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| 225 | // FIXME: should also check for whether a layer is selected in the layer list dialog
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| 226 | setEnabled(true);
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| 227 | }
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| 228 | } else if ("previous".equals(mode)) {
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| 229 | setEnabled(Main.map != null && Main.map.mapView != null && Main.map.mapView.hasZoomUndoEntries());
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| 230 | } else if ("next".equals(mode)) {
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| 231 | setEnabled(Main.map != null && Main.map.mapView != null && Main.map.mapView.hasZoomRedoEntries());
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| 232 | } else {
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| 233 | setEnabled(
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| 234 | Main.isDisplayingMapView()
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| 235 | && Main.map.mapView.hasLayers()
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| 236 | );
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| 237 | }
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| 238 | }
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| 239 |
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| 240 | @Override
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| 241 | protected void updateEnabledState(Collection<? extends OsmPrimitive> selection) {
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| 242 | if ("selection".equals(mode)) {
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| 243 | setEnabled(selection != null && !selection.isEmpty());
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| 244 | }
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| 245 | }
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| 246 |
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| 247 | @Override
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| 248 | protected void installAdapters() {
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| 249 | super.installAdapters();
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| 250 | // make this action listen to zoom change events
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| 251 | //
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| 252 | zoomChangeAdapter = new ZoomChangeAdapter();
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| 253 | MapView.addZoomChangeListener(zoomChangeAdapter);
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| 254 | initEnabledState();
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| 255 | }
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| 256 |
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| 257 | /**
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| 258 | * Adapter for selection change events
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| 259 | *
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| 260 | */
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| 261 | private class ZoomChangeAdapter implements MapView.ZoomChangeListener {
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| 262 | public void zoomChanged() {
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| 263 | updateEnabledState();
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| 264 | }
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| 265 | }
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| 266 |
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| 267 | private ZoomChangeAdapter zoomChangeAdapter;
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| 268 | }
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