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.tr;
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6 |
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7 | import java.awt.event.ActionEvent;
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8 | import java.awt.event.KeyEvent;
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9 |
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10 | import javax.swing.KeyStroke;
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11 |
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12 | import org.openstreetmap.josm.Main;
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13 | import org.openstreetmap.josm.tools.Shortcut;
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14 |
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15 | public final class ZoomOutAction extends JosmAction {
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16 |
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17 | public ZoomOutAction() {
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18 | super(tr("Zoom Out"), "dialogs/zoomout", tr("Zoom Out"),
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19 | Shortcut.registerShortcut("view:zoomout", tr("View: {0}", tr("Zoom Out")), KeyEvent.VK_MINUS, Shortcut.DIRECT), true);
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20 | putValue("help", ht("/Action/ZoomOut"));
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21 | // make numpad - behave like -
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22 | Main.registerActionShortcut(this,
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23 | Shortcut.registerShortcut("view:zoomoutkeypad", tr("View: {0}", tr("Zoom Out (Keypad)")),
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24 | KeyEvent.VK_SUBTRACT, Shortcut.DIRECT));
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25 | }
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26 |
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27 | public void actionPerformed(ActionEvent e) {
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28 | if (!Main.isDisplayingMapView()) return;
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29 | Main.map.mapView.zoomToFactor(Math.sqrt(2));
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30 | }
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31 |
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32 | @Override
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33 | protected void updateEnabledState() {
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34 | setEnabled(
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35 | Main.isDisplayingMapView()
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36 | && Main.map.mapView.hasLayers()
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37 | );
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38 | }
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39 | }
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