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SLD maps minScaleDenominator and maxScaleDenominator to rule minScale and maxScale. r=tschaub (closes #1297)

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git-svn-id: http://svn.openlayers.org/trunk/openlayers@5964 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
This commit is contained in:
ahocevar
2008-02-01 21:17:12 +00:00
parent 9bb51fb088
commit 4fc4c6ce4b
6 changed files with 111 additions and 44 deletions
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74
lib/OpenLayers/Style.js
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@@ -107,47 +107,75 @@ OpenLayers.Style = OpenLayers.Class({
* Returns:
* {<OpenLayers.Feature.Vector.style>} hash of feature styles
*/
createStyle: function(feature, baseStyle) {
if (!baseStyle) {
baseStyle = this.defaultStyle;
}
var style = OpenLayers.Util.extend({}, baseStyle);
createStyle: function(feature) {
var style = OpenLayers.Util.extend({}, this.defaultStyle);
var draw = true;
var rules = this.rules;
var draw = rules.length == 0 ? true : false;
for (var i=0; i<this.rules.length; i++) {
var rule;
for (var i=0; i<rules.length; i++) {
rule = rules[i];
// does the rule apply?
var applies = this.rules[i].evaluate(feature);
if (applies) {
// check if within minScale/maxScale bounds
var applies = rule.evaluate(feature);
if (rule.minScaleDenominator || rule.maxScaleDenominator) {
var scale = feature.layer.map.getScale();
if (this.rules[i].minScale) {
draw = scale > OpenLayers.Style.createLiteral(
this.rules[i].minScale, feature);
}
if (draw && this.rules[i].maxScale) {
draw = scale < OpenLayers.Style.createLiteral(
this.rules[i].maxScale, feature);
}
}
// check if within minScale/maxScale bounds
if (rule.minScaleDenominator) {
applies = scale >= OpenLayers.Style.createLiteral(
rule.minScaleDenominator, feature);
}
if (applies && rule.maxScaleDenominator) {
applies = scale < OpenLayers.Style.createLiteral(
rule.maxScaleDenominator, feature);
}
if (draw && rule.CLASS_NAME == "OpenLayers.Rule") {
// apply plain rules only if no other applied (ElseFilter)
applies = false;
}
if (applies) {
draw = true;
// determine which symbolizer (Point, Line, Polygon) to use
var symbolizerPrefix = feature.geometry ?
this.getSymbolizerPrefix(feature.geometry) :
OpenLayers.Style.SYMBOLIZER_PREFIXES[0];
// now merge the style with the current style
// merge the style with the current style
var symbolizer = this.rules[i].symbolizer[symbolizerPrefix];
OpenLayers.Util.extend(style, symbolizer);
}
}
style.display = draw ? "" : "none";
// calculate literals for all styles in the propertyStyles cache
this.createLiterals(style, feature);
style.display = draw ? "" : "none";
return style;
},
/**
* Method: createLiterals
* creates literals for all style properties that have an entry in
* <this.propertyStyles>.
*
* Parameters:
* style - {Object} style to create literals for. Will be modified
* inline.
* feature - {<OpenLayers.Feature.Vector>} feature to take properties from
*
* Returns;
* {Object} the modified style
*/
createLiterals: function(style, feature) {
for (var i in this.propertyStyles) {
style[i] = OpenLayers.Style.createLiteral(style[i], feature);
}
return style;
},