/* Copyright (c) 2009 Arnaud Renevier, Inc, published under the modified BSD
* license. */
+/*
+ * With canvas rendering engine, externalgraphics are drawn by loading and
+ * Image javascript object and drawing it with drawImage once it has been
+ * loaded. If matching feature is deleted while image is loading, redraw
+ * function will be called before drawImage and therefore, feature is removed,
+ * but image is still drawn on the screen. We fix it with locks: when an image is
+ * loading, we defer redraw method.
+ */
+OpenLayers.Renderer.Canvas.prototype = OpenLayers.Util.extend({
+ needsRedraw: false,
+ imagesLoading: 0
+}, OpenLayers.Renderer.Canvas.prototype);
+OpenLayers.Renderer.Canvas.prototype.oldRedraw = OpenLayers.Renderer.Canvas.prototype.redraw;
+OpenLayers.Renderer.Canvas.prototype.redraw = function() {
+ if (this.imagesLoading > 0) {
+ this.needsRedraw = true;
+ return;
+ }
+ OpenLayers.Renderer.Canvas.prototype.oldRedraw.apply(this, arguments);
+}
+OpenLayers.Renderer.Canvas.prototype.drawExternalGraphic = function(pt, style) {
+ var img = new Image();
+ img.src = style.externalGraphic;
+
+ if(style.graphicTitle) {
+ img.title=style.graphicTitle;
+ }
+
+ var width = style.graphicWidth || style.graphicHeight;
+ var height = style.graphicHeight || style.graphicWidth;
+ width = width ? width : style.pointRadius*2;
+ height = height ? height : style.pointRadius*2;
+ var xOffset = (style.graphicXOffset != undefined) ?
+ style.graphicXOffset : -(0.5 * width);
+ var yOffset = (style.graphicYOffset != undefined) ?
+ style.graphicYOffset : -(0.5 * height);
+ var opacity = style.graphicOpacity || style.fillOpacity;
+
+ var context = { img: img,
+ x: (pt[0]+xOffset),
+ y: (pt[1]+yOffset),
+ width: width,
+ height: height,
+ canvas: this.canvas };
+
+ var self = this;
+ this.imagesLoading++;
+ img.onerror = function() {
+ self.imagesLoading--;
+ if ((self.imagesLoading == 0) && (self.needsRedraw)) {
+ self.needsRedraw = false;
+ self.redraw();
+ }
+ }
+ img.onload = OpenLayers.Function.bind( function() {
+ self.imagesLoading--;
+ if ((self.imagesLoading == 0) && (self.needsRedraw)) {
+ self.needsRedraw = false;
+ self.redraw();
+ } else {
+ this.canvas.drawImage(this.img, this.x,
+ this.y, this.width, this.height);
+ }
+ }, context);
+}
+
+
OpenLayers.Control.SypAttribution = OpenLayers.Class (OpenLayers.Control.Attribution, {
updateAttribution: function() {
- var attributions = [SypStrings.propulsedByLink];
+ var attributions = [SypStrings.poweredByLink];
if (this.map && this.map.layers) {
for(var i=0, len=this.map.layers.length; i<len; i++) {
var layer = this.map.layers[i];
});
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,
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")
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);
}
},
},
createDataLayer: function(map) {
+ var defaultStyle = new OpenLayers.Style({
+ externalGraphic: this.Markers.ICON,
+ graphicHeight: "${height}",
+ label: "${label}",
+ fontColor: "white",
+ fontWeight: "bold"
+ }, {
+ context: {
+ height: function(feature) {
+ var defaultHeight = SYP.Markers.HEIGHT || 32;
+ var increase = 4 * (feature.attributes.count - 1);
+ return Math.min(defaultHeight + increase, 50);
+ },
+ label: function(feature) {
+ var renderer = feature.layer.renderer;
+ if (renderer.CLASS_NAME == "OpenLayers.Renderer.Canvas") {
+ return ""; // canvas backend cannot draw text above an external Image
+ }
+ return (feature.attributes.count > 1) ? feature.attributes.count: "";
+ }
+ }
+ });
+ 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
}
});
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) {
this.map.events.unregister("movestart", this, this._unselect);
return;
}
- popup = feature.popup;
+ var popup = feature.popup;
if (popup.visible()) {
popup.hide();
}
},
+ onZoomClusterEnd: function(arg) {
+ var map = arg.object;
+ var point = new OpenLayers.Geometry.Point(this.lonlat.lon, this.lonlat.lat);
+ var center = map.getCenter();
+ for (var i = this.layer.features.length; i-->0;) {
+ var feature = this.layer.features[i];
+ if (feature.geometry.equals(point) &&
+ (feature.attributes.count == this.count)) {
+ var self = this;
+ window.setTimeout(function() { map.setCenter(self.lonlat, map.zoom + 1)}, 500);
+ return;
+ }
+ }
+ SYP.selectControl.activate();
+ map.events.unregister("zoomend", this, SYP.onZoomClusterEnd);
+ },
+
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);
+ var args = {
+ lonlat: lonlat,
+ layer: feature.layer,
+ count: feature.attributes.count
+ }
+ map.events.register("zoomend", args, SYP.onZoomClusterEnd);
+ SYP.selectControl.deactivate();
+ 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.
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 offsetTop = this.offsetTop;
+ var offsetLeft = this.offsetLeft;
+ var par = this.offsetParent;
+ var ismsie = OpenLayers.Util.getBrowserName() == "msie";
+ while (par && !ismsie) {
+ offsetTop += par.offsetTop;
+ offsetLeft += par.offsetLeft;
+ par = par.offsetParent;
+ }
+ var icon = document.getElementById('bigimg_close');
+ icon.style.top = offsetTop;
+ icon.style.left = 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)
}
div.style.display = "block";
div.appendChild(textNode);
+ },
+
+ escapeHTML: function (str) {
+ if (!str) {
+ return "";
+ }
+ return str.
+ replace(/&/gm, '&').
+ replace(/'/gm, ''').
+ replace(/"/gm, '"').
+ replace(/>/gm, '>').
+ replace(/</gm, '<');
}
}
};
// 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
+// 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() {
+ var self = this;
+
+ window.setTimeout(function() { // timeout added by SYP
+
+ // 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='" + self.contentDisplayClass+ "'>" +
+ self.contentDiv.innerHTML +
+ "</div>";
+
+ var containerElement = (self.map) ? self.map.layerContainerDiv
+ : document.body;
+ var realSize = OpenLayers.Util.getRenderedDimensions(
+ preparedHTML, null, {
+ displayClass: self.displayClass,
+ containerElement: containerElement
+ }
);
- };
- 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) {
+ /*
+ * XXX: next four lines are added by SYP!
+ */
+ if (self.contentDiv) {
+ realSize.w = Math.max (realSize.w, self.contentDiv.scrollWidth);
+ realSize.h = Math.max (realSize.h, self.contentDiv.scrollHeight);
+ }
+
+ // is the "real" size of the div is safe to display in our map?
+ var safeSize = self.getSafeContentSize(realSize);
- var context = {
- 'popup': this,
- 'img': img
- };
+ 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;
- img._onImgLoad = OpenLayers.Function.bind(onImgLoad, context);
+ } 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: self.contentDisplayClass,
+ containerElement: containerElement
+ }
+ );
- OpenLayers.Event.observe(img, 'load', img._onImgLoad);
- }
- }
+ //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(
+ self.contentDiv, "overflow"
+ );
+ if ( (currentOverflow != "hidden") &&
+ (clippedSize.equals(safeSize)) ) {
+ var scrollBar = OpenLayers.Util.getScrollbarWidth();
+ if (fixedSize.w) {
+ clippedSize.h += scrollBar;
+ } else {
+ clippedSize.w += scrollBar;
+ }
+ }
+
+ newSize = self.getSafeContentSize(clippedSize);
+ }
+ }
+ self.setSize(newSize);
+ }, 0);
}
projects / syp.git / blobdiff