fb3c02354f
that Andreas has been working so hard on. I think this is the single most awesome commit I've ever had the pleasure of committing. The results of this commit are described on http://trac.openlayers.org/wiki/Styles: essentially, this makes it possible to style features in all kinds of fun ways based on rules, and will also form the underlying basis for #533. Things this patch adds: * OL.Rule classes. These classes allow you to do tests against the propertie of a feature, and set a style based on these properties -- so you can compare the 'speedlimit' property of a line, and test if it is > 60, and if it is greater than 60, render it in a different color. You can also test combinations of rules using the OL.Rule.Logical class, and test featureids with the FeatureID class. * OL.Style class: The OL.Style class lets you wrap up Rules into styles that can be used with drawFeature to draw the feature in the selected style. * OL.Layer.Vector.drawFeature will check if the given style is an OL.Style object, and if so, it will draw the feature accordingly. examples/georss-flickr.html shows usage of these classes. Many, many thanks go to Andreas for all his hard work on this: this code really is very pretty, and includes unit tests for all the classes (and we know that I am a big fan of tests.) Three cheers for Andreas: Hip hip, hooray! hip hip, hooray! hip hip, hooray! git-svn-id: http://svn.openlayers.org/trunk/openlayers@5429 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
80 lines
2.7 KiB
HTML
80 lines
2.7 KiB
HTML
<html>
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<head>
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<script src="../lib/OpenLayers.js"></script>
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<script type="text/javascript">
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function test_Style_constructor(t) {
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t.plan(3);
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var options = {'foo': 'bar'};
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var style = new OpenLayers.Style(null, options);
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t.ok(style instanceof OpenLayers.Style,
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"new OpenLayers.Style returns object" );
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t.eq(style.foo, "bar", "constructor sets options correctly");
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t.eq(typeof style.createStyle, "function", "style has a createStyle function");
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}
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function test_Style_create(t) {
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t.plan(5);
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var map = new OpenLayers.Map("map");
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var layer = new OpenLayers.Layer.Vector("layer");
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var baseStyle = {externalGraphic: "bar${foo}.png"};
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var style = new OpenLayers.Style(baseStyle);
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var rule = new OpenLayers.Rule.FeatureId({
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fids: ["1"],
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symbolizer: {"Point": {fillColor: "green"}},
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maxScale: 2000000});
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style.addRules([rule]);
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var feature = new OpenLayers.Feature.Vector(
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new OpenLayers.Geometry.Point(3,5),
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{"foo": "bar"},
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style);
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feature.fid = "1";
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// for this fid, the above rule should apply
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layer.addFeatures([feature]);
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map.addLayer(layer);
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map.setBaseLayer(layer);
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map.setCenter(new OpenLayers.LonLat(3,5), 8);
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// at this scale, the feature should be visible
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var createdStyle = style.createStyle(feature);
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t.eq(createdStyle.externalGraphic, "barbar.png", "Calculated property style correctly.");
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t.eq(createdStyle.display, "", "Feature is visible at scale "+map.getScale());
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map.setCenter(new OpenLayers.LonLat(3,5), 7);
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// at this scale, the feature should be invisible
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createdStyle = style.createStyle(feature);
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t.eq(createdStyle.display, "none", "Feature is invisible at scale "+map.getScale());
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t.eq(createdStyle.fillColor, "green", "Point symbolizer from rule for fid=\"1\" applied correctly.");
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feature.fid = "2";
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// now the rule should not apply
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createdStyle = style.createStyle(feature);
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t.eq(createdStyle.fillColor, undefined, "Correct style for rule that does not apply to fid=\"2\".");
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}
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function test_Style_destroy(t) {
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t.plan(1);
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var style = new OpenLayers.Style();
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style.destroy();
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t.eq(style.rules, null, "rules array nulled properly");
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}
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</script>
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</head>
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<body>
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<div id="map" style="width:500px;height:500px"></div>
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</body>
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</html>
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