X-Git-Url: https://dev.renevier.net/gitweb.cgi?p=syp.git;a=blobdiff_plain;f=js%2Fsyp.js;h=ddd47c9a084fda07ae6784d4662fdde0788736de;hp=032a6ac71e4264c29922c8e496f76a845cb9f272;hb=c69464951ab0f02221360e6cfb7765935c75109a;hpb=de485fbe85dc15d416ed08a51d6561fc8db0e078

diff --git a/js/syp.js b/js/syp.js
index 032a6ac..ddd47c9 100644
--- a/js/syp.js
+++ b/js/syp.js
@@ -17,11 +17,10 @@ OpenLayers.Control.SypAttribution = OpenLayers.Class (OpenLayers.Control.Attribu
 });
 
 var SYP = {
-    Settings: {
-        MARKER_ICON: "openlayers/img/marker-blue.png",
-        MARKER_ICON_HEIGHT: 25,
-        MARKER_SELECT_ICON: "openlayers/img/marker-green.png",
-        MARKER_SELECT_ICON_HEIGHT: 25
+    Markers: {
+        ICON: "media/marker-normal.png",
+        SELECT_ICON: "media/marker-selected.png",
+        HEIGHT: 25
     },
 
     map: null,
@@ -32,10 +31,10 @@ var SYP = {
     init: function() {
         this.map = new OpenLayers.Map("map", {
             controls:[
+                new OpenLayers.Control.SypAttribution(),
                 new OpenLayers.Control.Navigation(),
                 new OpenLayers.Control.PanZoom(),
-                new OpenLayers.Control.Permalink(),
-                new OpenLayers.Control.SypAttribution()
+                new OpenLayers.Control.Permalink()
             ],
             projection: new OpenLayers.Projection("EPSG:900913"),
             displayProjection: new OpenLayers.Projection("EPSG:4326")
@@ -50,19 +49,7 @@ var SYP = {
         this.selectControl.activate();
 
         if (!this.map.getCenter()) {
-            var centerBounds = new OpenLayers.Bounds();
-
-            var mapProj = this.map.getProjectionObject();
-            var sypOrigProj = new OpenLayers.Projection("EPSG:4326");
-
-            var bottomLeft = new OpenLayers.LonLat(sypOrig[0],sypOrig[1]);
-            bottomLeft = bottomLeft.transform(sypOrigProj, mapProj);
-            var topRight = new OpenLayers.LonLat(sypOrig[2],sypOrig[3])
-            topRight = topRight.transform(sypOrigProj, mapProj);
-
-            centerBounds.extend(bottomLeft);
-            centerBounds.extend(topRight);
-            this.map.zoomToExtent(centerBounds);
+            this.map.setCenter(new OpenLayers.LonLat(0, 0), 0);
         }
     },
 
@@ -71,26 +58,36 @@ var SYP = {
     },
 
     createDataLayer: function(map) {
+        var defaultStyle = new OpenLayers.Style({
+            externalGraphic: this.Markers.ICON,
+            graphicHeight: "${height}"
+        }, {
+            context: {
+                height: function(feature) {
+                    var defaultHeight = SYP.Markers.HEIGHT || 32;
+                    var increase = 4 * (feature.attributes.count - 1);
+                    return Math.min(defaultHeight + increase, 50);
+                }
+            }
+        });
+        var selectStyle = new OpenLayers.Style({
+            externalGraphic: this.Markers.SELECT_ICON,
+            graphicHeight: this.Markers.HEIGHT || 32 
+        });
         var styleMap = new OpenLayers.StyleMap (
-                        {"default": {
-                            externalGraphic: this.Settings.MARKER_ICON,
-                            graphicHeight: this.Settings.MARKER_ICON_HEIGHT
-                                            || 32 
-                                    },
-                         "select": { 
-                            externalGraphic: this.Settings.MARKER_SELECT_ICON,
-                            graphicHeight: this.Settings.MARKER_SELECT_ICON_HEIGHT 
-                                            || 32 
-                                  }
-                     });
+                        {"default": defaultStyle,
+                         "select": selectStyle});
 
         var layer = new OpenLayers.Layer.GML("KML", "items.php", 
            {
+               strategies: [
+                new OpenLayers.Strategy.Cluster()
+                ],
             styleMap: styleMap,
             format: OpenLayers.Format.KML, 
             projection: this.map.displayProjection,
             eventListeners: { scope: this,
-                              loadend: this.checkForFeatures
+                              loadend: this.dataLayerEndLoad
                             }
            });
 
@@ -108,12 +105,38 @@ var SYP = {
         return control;
     },
 
+    dataLayerEndLoad: function() {
+        if (!this.checkForFeatures()) {
+            return;
+        }
+
+        var map = this.map;
+        if (map.getControlsByClass("OpenLayers.Control.ArgParser")[0].center
+            == null) { // map center was not set in ArgParser control.
+            var orig = this.Utils.mbr (this.dataLayer);
+            var centerBounds = new OpenLayers.Bounds();
+
+            var mapProj = map.getProjectionObject();
+            var sypOrigProj = new OpenLayers.Projection("EPSG:4326");
+
+            var bottomLeft = new OpenLayers.LonLat(orig[0],orig[1]);
+            bottomLeft = bottomLeft.transform(sypOrigProj, mapProj);
+            var topRight = new OpenLayers.LonLat(orig[2],orig[3])
+            topRight = topRight.transform(sypOrigProj, mapProj);
+
+            centerBounds.extend(bottomLeft);
+            centerBounds.extend(topRight);
+            map.zoomToExtent(centerBounds);
+        }
+    },
+
     checkForFeatures: function() {
         var features = this.dataLayer.features;
         if (features.length == 0) {
             var message = SypStrings.noImageRegistered;
             this.Utils.displayUserMessage(message, "warn");
         }
+        return !!features.length;
     },
 
     createPopup: function(position, contentHTML) {
@@ -140,7 +163,7 @@ var SYP = {
             this.map.events.unregister("movestart", this, this._unselect);
             return;
         }
-        popup = feature.popup;
+        var popup = feature.popup;
         if (popup.visible()) {
             popup.hide();
         }
@@ -148,13 +171,39 @@ var SYP = {
 
     onFeatureSelect: function(feature) {
         var map = feature.layer.map;
+        if (feature.attributes.count > 1) {
+            this.unselect(feature);
+            var lonlat = new OpenLayers.LonLat(feature.geometry.x, feature.geometry.y);
+            map.setCenter(lonlat, map.zoom + 1);
+            return;
+        }
         var permaControl = map.getControlsByClass("OpenLayers.Control.Permalink");
         if (permaControl[0]) {
             permaControl[0].div.style.display = "none";
         }
         var popup = feature.popup;
 
-        var brCorner = SYP.Utils.brCorner(map, 8);
+        var popupPos = null;
+        switch (sypSettings.popupPos) {
+            case 0:
+                popupPos = feature.geometry.getBounds().getCenterLonLat();
+            break;
+            case 1:
+                popupPos = SYP.Utils.tlCorner(map, 8);
+            break;
+            case 2:
+                popupPos = SYP.Utils.trCorner(map, 8);
+            break;
+            case 3:
+                popupPos = SYP.Utils.brCorner(map, 8);
+            break;
+            case 4:
+                popupPos = SYP.Utils.blCorner(map, 8);
+            break;
+            default:
+                popupPos = SYP.Utils.brCorner(map, 8);
+           break;
+        }
 
         // we cannot reuse popup; we need to recreate it in order for IE
         // expressions to work. Otherwise, we get a 0x0 image on second view.
@@ -162,37 +211,159 @@ var SYP = {
             popup.destroy();
         }
         var contentHTML;
-        if (feature.attributes.name) {
+        if (feature.cluster[0].attributes.name) {
+            // escaping name is necessary because it's not enclosed in another html tag.
             contentHTML = "<h2>" +
-                          feature.attributes.name + 
+                          SYP.Utils.escapeHTML(feature.cluster[0].attributes.name) +
                           "</h2>" + 
-                          feature.attributes.description;
+                          feature.cluster[0].attributes.description;
         } else {
-            contentHTML = feature.attributes.description;
+            contentHTML = feature.cluster[0].attributes.description;
         }
         if (!contentHTML || !contentHTML.length) {
             this.map.events.register("movestart", this, this._unselect = function () { this.unselect(feature)});
             return;
         }
-        popup = SYP.createPopup(brCorner, contentHTML);
+        popup = SYP.createPopup(popupPos, contentHTML);
         var control = this;
         popup.hide = function () {
             OpenLayers.Element.hide(this.div);
-            control.unselect(feature);
+            control.unselectAll();
         };
         map.addPopup(popup);
         feature.popup = popup;
+        var anchor = popup.div.getElementsByTagName("a")[0];
+        if (anchor) {
+            anchor.onclick = function() { 
+                SYP.showBigImage(this.href);
+                return false;
+            }
+        }
+    },
+
+    showBigImage: function (href) {
+        if (OpenLayers.Util.getBrowserName() == "msie") {
+            document.getElementById('bigimg_container').style.display = "block";
+        } else {
+            document.getElementById('bigimg_container').style.display = "table";
+        }
+
+        var maxHeight = document.body.clientHeight * 0.9;
+        var maxWidth = document.body.clientWidth * 0.9;
+        document.getElementById('bigimg').style.height = "";
+        document.getElementById('bigimg').style.width = "";
+        document.getElementById('bigimg').style.maxHeight = maxHeight + "px";
+        document.getElementById('bigimg').style.maxWidth = maxWidth + "px";
+        document.getElementById('bigimg').onload = function () {
+            var heightRatio = this.clientHeight / parseInt(this.style.maxHeight);
+            var widthRatio = this.clientWidth / parseInt(this.style.maxWidth);
+            if (heightRatio > 1 || widthRatio > 1) {
+                if (heightRatio > widthRatio) {
+                    this.style.height = this.style.maxHeight;
+                } else {
+                    this.style.width = this.style.maxWidth;
+                }
+            }
+
+            var icon = document.getElementById('bigimg_close');
+            icon.style.top = this.offsetTop;
+            icon.style.left = this.offsetLeft + this.clientWidth - icon.clientWidth;
+
+        };
+        document.getElementById('bigimg').src = href;
+    },
+
+    closeBigImage: function() {
+        document.getElementById('bigimg').src = "";
+        document.getElementById('bigimg').parentNode.innerHTML = document.getElementById('bigimg').parentNode.innerHTML;
+        document.getElementById('bigimg_container').style.display = "none";
     },
 
     Utils: {
+        tlCorner: function(map, margin) {
+            var bounds = map.calculateBounds();
+            var corner = new OpenLayers.LonLat(bounds.left, bounds.top);
+            var cornerAsPx = map.getPixelFromLonLat(corner);
+            cornerAsPx = cornerAsPx.add( +margin, +margin);
+            return map.getLonLatFromPixel(cornerAsPx);
+        },
+
+        trCorner: function(map, margin) {
+            var bounds = map.calculateBounds();
+            var corner = new OpenLayers.LonLat(bounds.right, bounds.top);
+            var cornerAsPx = map.getPixelFromLonLat(corner);
+            cornerAsPx = cornerAsPx.add( -margin, +margin);
+            return map.getLonLatFromPixel(cornerAsPx);
+        },
+
         brCorner: function(map, margin) {
             var bounds = map.calculateBounds();
             var corner = new OpenLayers.LonLat(bounds.right, bounds.bottom);
             var cornerAsPx = map.getPixelFromLonLat(corner);
             cornerAsPx = cornerAsPx.add( -margin, -margin);
-            corner = map.getLonLatFromPixel(cornerAsPx);
-            return corner;
+            return map.getLonLatFromPixel(cornerAsPx);
+        },
+
+        blCorner: function(map, margin) {
+            var bounds = map.calculateBounds();
+            var corner = new OpenLayers.LonLat(bounds.left, bounds.bottom);
+            var cornerAsPx = map.getPixelFromLonLat(corner);
+            cornerAsPx = cornerAsPx.add( +margin, -margin);
+            return map.getLonLatFromPixel(cornerAsPx);
         },
+
+        /* minimum bounds rectangle containing all feature locations.
+         * FIXME: if two features are close, but separated by 180th meridian,
+         * their mbr will span the whole earth. Actually, 179° lon and -170°
+         * lon are considerated very near.
+         */
+        mbr: function (layer) {
+            var features = [];
+            var map = layer.map;
+
+            var mapProj = map.getProjectionObject();
+            var sypOrigProj = new OpenLayers.Projection("EPSG:4326");
+
+            for (var i =0; i < layer.features.length; i++) {
+                if (layer.features[i].cluster) {
+                    features = features.concat(layer.features[i].cluster);
+                } else {
+                    features = features.concat(layer.features);
+                }
+            }
+
+            var minlon = 180;
+            var minlat = 88;
+            var maxlon = -180;
+            var maxlat = -88;
+
+            if (features.length == 0) {
+                // keep default values
+            } else if (features.length == 1) {
+                // in case there's only one feature, we show an area of at least 
+                // 4 x 4 degrees
+                var pos = features[0].geometry.getBounds().getCenterLonLat().clone();
+                var lonlat = pos.transform(mapProj, sypOrigProj);
+
+                minlon = Math.max (lonlat.lon - 2, -180);
+                maxlon = Math.min (lonlat.lon + 2, 180);
+                minlat = Math.max (lonlat.lat - 2, -90);
+                maxlat = Math.min (lonlat.lat + 2, 90);
+            } else {
+                for (var i = 0; i < features.length; i++) {
+                    var pos = features[i].geometry.getBounds().getCenterLonLat().clone();
+                    var lonlat = pos.transform(mapProj, sypOrigProj);
+                    minlon = Math.min (lonlat.lon, minlon);
+                    minlat = Math.min (lonlat.lat, minlat);
+                    maxlon = Math.max (lonlat.lon, maxlon);
+                    maxlat = Math.max (lonlat.lat, maxlat);
+                }
+            }
+
+            return [minlon, minlat, maxlon, maxlat];
+
+        },
+
         displayUserMessage: function(message, status) {
             var div = document.getElementById('message');
             while (div.firstChild)
@@ -214,6 +385,18 @@ var SYP = {
             }
             div.style.display = "block";
             div.appendChild(textNode);
+        },
+
+        escapeHTML: function (str) {
+            if (!str) {
+                return "";
+            }
+            return str.
+             replace(/&/gm, '&amp;').
+             replace(/'/gm, '&#39;').
+             replace(/"/gm, '&quot;').
+             replace(/>/gm, '&gt;').
+             replace(/</gm, '&lt;');
         }
     }
 };
@@ -231,32 +414,87 @@ OpenLayers.Console.userError = function(error) {
 
 // sometimes, especially when cache is clear, firefox does not compute
 // correctly popup size. That's because at the end of getRenderedDimensions,
-// dimensions of image is not known. So, we work around that problem by setting
-// image width and image height. That way, dimensions of image are set in
-// innerHTML, and are therefore known in getRenderedDimensions
-OpenLayers.Popup.Anchored.prototype.registerImageListeners = function() {
-    var onImgLoad = function() {
-        this.img.width =  this.img.width;
-        this.img.height =  this.img.height;
-        this.popup.updateSize();
-        OpenLayers.Event.stopObserving(
-            this.img, "load", this.img._onImageLoad
-        );
-    };
-
-    var images = this.contentDiv.getElementsByTagName("img");
-    for (var i = 0, len = images.length; i < len; i++) {
-        var img = images[i];
-        if (img.width == 0 || img.height == 0) {
-
-            var context = {
-                'popup': this,
-                'img': img
-            };
-
-            img._onImgLoad = OpenLayers.Function.bind(onImgLoad, context);
-
-            OpenLayers.Event.observe(img, 'load', img._onImgLoad);
-        }    
-    } 
+// dimensions of image is not known. Then, popup size is too small for its
+// content. We work around the problem by checking that computed size is at
+// least as big as content. To achieve that, we need to override
+// OpenLayers.Popup.Anchored.prototype.updateSize to modify it slightly.
+OpenLayers.Popup.Anchored.prototype.updateSize = function() {
+    // determine actual render dimensions of the contents by putting its
+    // contents into a fake contentDiv (for the CSS) and then measuring it
+    var preparedHTML = "<div class='" + this.contentDisplayClass+ "'>" + 
+        this.contentDiv.innerHTML + 
+        "</div>";
+
+    var containerElement = (this.map) ? this.map.layerContainerDiv
+                                      : document.body;
+    var realSize = OpenLayers.Util.getRenderedDimensions(
+        preparedHTML, null,	{
+            displayClass: this.displayClass,
+            containerElement: containerElement
+        }
+    );
+
+    /*
+     * XXX: next four lines are added by SYP!
+     */
+    if (this.contentDiv) {
+        realSize.w = Math.max (realSize.w, this.contentDiv.scrollWidth);
+        realSize.h = Math.max (realSize.h, this.contentDiv.scrollHeight);
+    }
+
+    // is the "real" size of the div is safe to display in our map?
+    var safeSize = this.getSafeContentSize(realSize);
+
+    var newSize = null;
+    if (safeSize.equals(realSize)) {
+        //real size of content is small enough to fit on the map, 
+        // so we use real size.
+        newSize = realSize;
+
+    } else {
+
+        //make a new OL.Size object with the clipped dimensions 
+        // set or null if not clipped.
+        var fixedSize = new OpenLayers.Size();
+        fixedSize.w = (safeSize.w < realSize.w) ? safeSize.w : null;
+        fixedSize.h = (safeSize.h < realSize.h) ? safeSize.h : null;
+
+            if (fixedSize.w && fixedSize.h) {
+                //content is too big in both directions, so we will use 
+                // max popup size (safeSize), knowing well that it will 
+                // overflow both ways.                
+                newSize = safeSize;
+            } else {
+                //content is clipped in only one direction, so we need to 
+                // run getRenderedDimensions() again with a fixed dimension
+                var clippedSize = OpenLayers.Util.getRenderedDimensions(
+                    preparedHTML, fixedSize, {
+                        displayClass: this.contentDisplayClass,
+                        containerElement: containerElement
+                    }
+                );
+
+                //if the clipped size is still the same as the safeSize, 
+                // that means that our content must be fixed in the 
+                // offending direction. If overflow is 'auto', this means 
+                // we are going to have a scrollbar for sure, so we must 
+                // adjust for that.
+                //
+                var currentOverflow = OpenLayers.Element.getStyle(
+                    this.contentDiv, "overflow"
+                );
+                if ( (currentOverflow != "hidden") && 
+                     (clippedSize.equals(safeSize)) ) {
+                    var scrollBar = OpenLayers.Util.getScrollbarWidth();
+                    if (fixedSize.w) {
+                        clippedSize.h += scrollBar;
+                    } else {
+                        clippedSize.w += scrollBar;
+                    }
+                }
+
+                newSize = this.getSafeContentSize(clippedSize);
+            }
+        }                        
+        this.setSize(newSize);     
 }