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removing the restrictedMinZoom property, and allow for restricting zoom levels with maxResolution and numZoomLevels. Thanks tschaub for the doc, test and examples improvements. r=tschaub (see #3338)

Browse Source 
git-svn-id: http://svn.openlayers.org/trunk/openlayers@12106 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
This commit is contained in:
ahocevar
2011-06-18 19:25:46 +00:00
parent 6248cdc94d
commit a9d3b8b72e
8 changed files with 98 additions and 105 deletions
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42
lib/OpenLayers/Layer/GoogleNG.js
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@@ -25,6 +25,21 @@ OpenLayers.Layer.GoogleNG = OpenLayers.Class(OpenLayers.Layer.XYZ, {
*/
SUPPORTED_TRANSITIONS: [],
/**
* Property: serverResolutions
* {Array} the resolutions provided by the Google API.
*/
serverResolutions: [
156543.03390625, 78271.516953125, 39135.7584765625,
19567.87923828125, 9783.939619140625, 4891.9698095703125,
2445.9849047851562, 1222.9924523925781, 611.4962261962891,
305.74811309814453, 152.87405654907226, 76.43702827453613,
38.218514137268066, 19.109257068634033, 9.554628534317017,
4.777314267158508, 2.388657133579254, 1.194328566789627,
0.5971642833948135, 0.29858214169740677, 0.14929107084870338,
0.07464553542435169, 0.037322767712175846
],
/**
* Property: attributionTemplate
* {String}
@@ -94,7 +109,6 @@ OpenLayers.Layer.GoogleNG = OpenLayers.Class(OpenLayers.Layer.XYZ, {
var newArgs = [options.name, null, options];
OpenLayers.Layer.XYZ.prototype.initialize.apply(this, newArgs);
this.options.numZoomLevels = options.numZoomLevels;
if (!OpenLayers.Layer.GoogleNG.mapObject) {
OpenLayers.Layer.GoogleNG.mapObject =
new google.maps.Map(document.createElement("div"));
@@ -121,26 +135,16 @@ OpenLayers.Layer.GoogleNG = OpenLayers.Class(OpenLayers.Layer.XYZ, {
this.setName("Google " + mapType.name);
}
var numZoomLevels = mapType.maxZoom + 1;
if (this.options.numZoomLevels != null) {
numZoomLevels = Math.min(numZoomLevels, this.options.numZoomLevels);
}
var restrictedMinZoom;
if (this.restrictedMinZoom || mapType.minZoom) {
restrictedMinZoom = Math.max(
mapType.minZoom || 0, this.restrictedMinZoom || 0
);
}
var minZoom = mapType.minZoom || 0;
this.addOptions({
restrictedMinZoom: restrictedMinZoom,
numZoomLevels: numZoomLevels,
tileSize: new OpenLayers.Size(
mapType.tileSize.width, mapType.tileSize.height
maxResolution: Math.min(
this.serverResolutions[minZoom], this.maxResolution
),
zoomOffset: minZoom,
numZoomLevels: Math.min(
mapType.maxZoom + 1 - minZoom, this.numZoomLevels
)
});
// redraw to populate tiles with content
this.redraw();
}, true);
},
/**