fixing restrictedExtent check in moveByPx. r=bartvde (closes #3138)

git-svn-id: http://svn.openlayers.org/trunk/openlayers@11607 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

examples/restricted-extent.html

@@ -9,7 +9,7 @@
     <script src="../lib/OpenLayers.js"></script>
     <script type="text/javascript">
         var map = null;
-        var extent = new OpenLayers.Bounds(-180, -90, 180, 90);
+        var extent = new OpenLayers.Bounds(8, 44.5, 19, 50);
 
         function init() {
             var options = {
@@ -24,7 +24,7 @@
             ); 
 
             map.addLayers([wms]);
-            map.setCenter(extent, 1);
+            map.zoomToExtent(extent);
             document.getElementById("toggle").checked = true;
         }
         
@@ -68,8 +68,8 @@
         <input type="checkbox" id="toggle" checked="checked"
                onclick="toggleRestrictedExtent();" />
         <label for="toggle">
-            Toggle restricted extent (to [-180, -90, 180, 90]).
+            Toggle restricted extent (to [8, 44.5, 19, 50]).
         </label>
     
   </body>
-</html>
+</html>

lib/OpenLayers/Layer.js

@@ -1215,7 +1215,7 @@ OpenLayers.Layer = OpenLayers.Class({
         var map = this.map;
         if (viewPortPx != null && map.minPx) {
             var res = map.getResolution();
-            var maxExtent = map.getMaxExtent();
+            var maxExtent = map.getMaxExtent({restricted: true});
             var lon = (viewPortPx.x - map.minPx.x) * res + maxExtent.left;
             var lat = (map.minPx.y - viewPortPx.y) * res + maxExtent.top;
             lonlat = new OpenLayers.LonLat(lon, lat);

lib/OpenLayers/Map.js

@@ -1671,21 +1671,21 @@ OpenLayers.Map = OpenLayers.Class({
         var hh = this.size.h / 2;
         var x = hw + dx;
         var y = hh + dy;
-        var valid = y <= this.maxPx.y &&
-                    y >= this.minPx.y;
-        var minX, maxX;
-        if (this.baseLayer.wrapDateLine === true) {
-            minX = this.minPx.x, maxX = this.maxPx.x;
-        } else {
-            valid = valid &&
-                    x <= this.maxPx.x &&
-                    x >= this.minPx.x;
+        var wrapDateLine = this.baseLayer.wrapDateLine;
+        var xRestriction = yRestriction = 0;
+        if (this.restrictedExtent) {
+            xRestriction = hw;
+            yRestriction = hh;
+            // wrapping the date line makes no sense for restricted extents
+            wrapDateLine = false;
         }
-        if (this.restrictedExtent && valid) {
-            valid = !(this.maxPx.x - x < hw ||
-                      x - this.minPx.x < hw ||
-                      this.maxPx.y - y < hh ||
-                      y - this.minPx.y < hh);
+        var valid = y <= this.maxPx.y - yRestriction &&
+                    y >= this.minPx.y + yRestriction;
+        var minX = this.minPx.x, maxX = this.maxPx.x;
+        if (!wrapDateLine) {
+            valid = valid &&
+                    x <= this.maxPx.x - xRestriction &&
+                    x >= this.minPx.x + xRestriction;
         }
         if (valid) {
             this.center = null;
@@ -1694,7 +1694,7 @@ OpenLayers.Map = OpenLayers.Class({
                     parseInt(this.layerContainerDiv.style.left) - dx + "px";
                 this.minPx.x -= dx;
                 this.maxPx.x -= dx;
-                if (this.baseLayer.wrapDateLine === true) {
+                if (wrapDateLine) {
                     if (this.maxPx.x > maxX) {
                         this.maxPx.x -= (maxX - minX);
                     };