1 | // License: GPL. For details, see LICENSE file.
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2 | package org.openstreetmap.josm.gui.layer;
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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.event.ActionEvent;
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7 | import java.util.ArrayList;
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8 | import java.util.Arrays;
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9 | import java.util.Collection;
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10 | import java.util.List;
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11 | import java.util.Objects;
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12 |
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13 | import javax.swing.AbstractAction;
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14 | import javax.swing.Action;
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15 |
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16 | import org.apache.commons.jcs3.access.CacheAccess;
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17 | import org.openstreetmap.gui.jmapviewer.interfaces.TileLoader;
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18 | import org.openstreetmap.josm.data.cache.BufferedImageCacheEntry;
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19 | import org.openstreetmap.josm.data.coor.LatLon;
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20 | import org.openstreetmap.josm.data.imagery.AbstractWMSTileSource;
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21 | import org.openstreetmap.josm.data.imagery.ImageryInfo;
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22 | import org.openstreetmap.josm.data.imagery.ImageryInfo.ImageryType;
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23 | import org.openstreetmap.josm.data.imagery.ImageryLayerInfo;
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24 | import org.openstreetmap.josm.data.imagery.TemplatedWMSTileSource;
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25 | import org.openstreetmap.josm.data.imagery.WMSCachedTileLoader;
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26 | import org.openstreetmap.josm.data.imagery.WMSEndpointTileSource;
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27 | import org.openstreetmap.josm.data.preferences.BooleanProperty;
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28 | import org.openstreetmap.josm.data.preferences.IntegerProperty;
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29 | import org.openstreetmap.josm.data.projection.Projection;
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30 | import org.openstreetmap.josm.data.projection.ProjectionRegistry;
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31 | import org.openstreetmap.josm.data.projection.Projections;
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32 | import org.openstreetmap.josm.gui.MainApplication;
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33 | import org.openstreetmap.josm.gui.layer.imagery.TileSourceDisplaySettings;
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34 | import org.openstreetmap.josm.tools.CheckParameterUtil;
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35 | import org.openstreetmap.josm.tools.Logging;
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36 |
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37 | /**
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38 | * This is a layer that grabs the current screen from an WMS server. The data
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39 | * fetched this way is tiled and managed to the disc to reduce server load.
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40 | *
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41 | */
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42 | public class WMSLayer extends AbstractCachedTileSourceLayer<AbstractWMSTileSource> {
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43 | private static final String PREFERENCE_PREFIX = "imagery.wms";
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44 | /**
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45 | * Registers all setting properties
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46 | */
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47 | static {
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48 | new TileSourceDisplaySettings(PREFERENCE_PREFIX);
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49 | }
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50 |
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51 | /** default tile size for WMS Layer */
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52 | public static final IntegerProperty PROP_IMAGE_SIZE = new IntegerProperty(PREFERENCE_PREFIX + ".imageSize", 512);
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53 |
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54 | /** should WMS layer autozoom in default mode */
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55 | public static final BooleanProperty PROP_DEFAULT_AUTOZOOM = new BooleanProperty(PREFERENCE_PREFIX + ".default_autozoom", true);
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56 |
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57 | private static final String CACHE_REGION_NAME = "WMS";
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58 |
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59 | private List<String> serverProjections;
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60 |
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61 | /**
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62 | * Constructs a new {@code WMSLayer}.
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63 | * @param info ImageryInfo description of the layer
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64 | */
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65 | public WMSLayer(ImageryInfo info) {
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66 | super(info);
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67 | CheckParameterUtil.ensureThat(
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68 | info.getImageryType() == ImageryType.WMS || info.getImageryType() == ImageryType.WMS_ENDPOINT, "ImageryType is WMS");
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69 | CheckParameterUtil.ensureParameterNotNull(info.getUrl(), "info.url");
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70 | if (info.getImageryType() == ImageryType.WMS) {
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71 | TemplatedWMSTileSource.checkUrl(info.getUrl());
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72 |
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73 | }
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74 | this.serverProjections = new ArrayList<>(info.getServerProjections());
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75 | }
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76 |
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77 | @Override
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78 | protected TileSourceDisplaySettings createDisplaySettings() {
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79 | return new TileSourceDisplaySettings(PREFERENCE_PREFIX);
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80 | }
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81 |
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82 | @Override
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83 | public Action[] getMenuEntries() {
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84 | List<Action> ret = new ArrayList<>(Arrays.asList(super.getMenuEntries()));
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85 | ret.add(SeparatorLayerAction.INSTANCE);
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86 | ret.add(new LayerSaveAction(this));
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87 | ret.add(new LayerSaveAsAction(this));
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88 | ret.add(new BookmarkWmsAction());
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89 | return ret.toArray(new Action[0]);
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90 | }
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91 |
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92 | @Override
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93 | protected AbstractWMSTileSource getTileSource() {
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94 | AbstractWMSTileSource tileSource;
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95 | if (info.getImageryType() == ImageryType.WMS) {
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96 | tileSource = new TemplatedWMSTileSource(info, chooseProjection(ProjectionRegistry.getProjection()));
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97 | } else {
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98 | /*
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99 | * Chicken-and-egg problem. We want to create tile source, but supported projections we can get only
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100 | * from this tile source. So create tilesource first with dummy ProjectionRegistry.getProjection(), and then update
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101 | * once we update server projections.
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102 | *
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103 | * Thus:
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104 | * * it is not required to provide projections for wms_endpoint imagery types
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105 | * * we always use current definitions returned by server
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106 | */
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107 | WMSEndpointTileSource endpointTileSource = new WMSEndpointTileSource(info, ProjectionRegistry.getProjection());
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108 | this.serverProjections = endpointTileSource.getServerProjections();
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109 | endpointTileSource.setTileProjection(chooseProjection(ProjectionRegistry.getProjection()));
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110 | tileSource = endpointTileSource;
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111 | }
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112 | info.setAttribution(tileSource);
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113 | return tileSource;
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114 | }
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115 |
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116 | /**
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117 | * This action will add a WMS layer menu entry with the current WMS layer
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118 | * URL and name extended by the current resolution.
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119 | * When using the menu entry again, the WMS cache will be used properly.
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120 | */
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121 | public class BookmarkWmsAction extends AbstractAction {
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122 | /**
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123 | * Constructs a new {@code BookmarkWmsAction}.
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124 | */
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125 | public BookmarkWmsAction() {
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126 | super(tr("Set WMS Bookmark"));
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127 | }
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128 |
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129 | @Override
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130 | public void actionPerformed(ActionEvent ev) {
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131 | ImageryLayerInfo.addLayer(new ImageryInfo(info));
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132 | }
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133 | }
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134 |
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135 | @Override
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136 | public Collection<String> getNativeProjections() {
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137 | return serverProjections;
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138 | }
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139 |
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140 | @Override
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141 | public void projectionChanged(Projection oldValue, Projection newValue) {
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142 | super.projectionChanged(oldValue, newValue);
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143 | Projection tileProjection = chooseProjection(newValue);
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144 | if (!Objects.equals(tileSource.getTileProjection(), tileProjection)) {
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145 | tileSource.setTileProjection(tileProjection);
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146 | }
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147 | }
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148 |
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149 | private Projection chooseProjection(Projection requested) {
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150 | if (serverProjections.contains(requested.toCode())) {
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151 | return requested;
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152 | } else {
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153 | LatLon center = MainApplication.isDisplayingMapView() ?
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154 | requested.eastNorth2latlon(MainApplication.getMap().mapView.getCenter()) : null;
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155 | Projection firstNonNullproj = null;
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156 | Projection firstProjInBounds = null;
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157 | for (String code : serverProjections) {
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158 | Projection proj = Projections.getProjectionByCode(code);
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159 | if (proj != null) {
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160 | if (firstNonNullproj == null) {
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161 | firstNonNullproj = proj;
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162 | }
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163 | if (center != null && proj.getWorldBoundsLatLon().contains(center)) {
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164 | firstProjInBounds = proj;
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165 | break;
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166 | }
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167 | }
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168 | }
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169 | if (firstProjInBounds != null) {
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170 | return selectProjection(firstProjInBounds);
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171 | } else if (firstNonNullproj != null) {
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172 | return selectProjection(firstNonNullproj);
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173 | }
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174 | Logging.warn(tr("Unable to find supported projection for layer {0}. Using {1}.", getName(), requested.toCode()));
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175 | return requested;
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176 | }
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177 | }
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178 |
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179 | private Projection selectProjection(Projection proj) {
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180 | Logging.info(tr("Reprojecting layer {0} from {1} to {2}. For best image quality and performance,"
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181 | + " switch to one of the supported projections: {3}",
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182 | getName(), proj.toCode(), ProjectionRegistry.getProjection().toCode(), String.join(", ", getNativeProjections())));
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183 | return proj;
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184 | }
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185 |
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186 | @Override
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187 | protected Class<? extends TileLoader> getTileLoaderClass() {
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188 | return WMSCachedTileLoader.class;
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189 | }
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190 |
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191 | @Override
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192 | protected String getCacheName() {
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193 | return CACHE_REGION_NAME;
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194 | }
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195 |
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196 | /**
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197 | * Returns cache region for WMS layer.
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198 | * @return cache region for WMS layer
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199 | */
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200 | public static CacheAccess<String, BufferedImageCacheEntry> getCache() {
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201 | return AbstractCachedTileSourceLayer.getCache(CACHE_REGION_NAME);
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202 | }
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203 | }
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