svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.library / org.gvsig.expressionevaluator / org.gvsig.expressionevaluator.lib / org.gvsig.expressionevaluator.lib.impl / src / main / java / org / gvsig / expressionevaluator / impl / function / image / ImageWidthFunction.java @ 44376
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| 1 | 44126 | jjdelcerro | package org.gvsig.expressionevaluator.impl.function.image; |
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| 2 | 43512 | jjdelcerro | |
| 3 | import org.apache.commons.lang3.Range; |
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| 4 | 43521 | jjdelcerro | import org.gvsig.expressionevaluator.Interpreter; |
| 5 | 43512 | jjdelcerro | import org.gvsig.expressionevaluator.spi.AbstractFunction; |
| 6 | |||
| 7 | 44126 | jjdelcerro | public class ImageWidthFunction extends AbstractFunction { |
| 8 | 43512 | jjdelcerro | |
| 9 | 44126 | jjdelcerro | public ImageWidthFunction() {
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| 10 | 43512 | jjdelcerro | super(
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| 11 | 44126 | jjdelcerro | "Image", "IMAGEWIDTH", Range.is(1), |
| 12 | "",
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| 13 | "IMAGEWIDTH({{source}})",
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| 14 | new String[]{ |
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| 15 | "Value from which to load the image"
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| 16 | }, |
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| 17 | "Integer",
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| 18 | false
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| 19 | 43512 | jjdelcerro | ); |
| 20 | } |
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| 21 | |||
| 22 | @Override
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| 23 | 44009 | jjdelcerro | public boolean allowConstantFolding() { |
| 24 | return true; |
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| 25 | } |
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| 26 | 44126 | jjdelcerro | |
| 27 | 44009 | jjdelcerro | @Override
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| 28 | 43521 | jjdelcerro | public Object call(Interpreter interpreter, Object[] args) { |
| 29 | 44126 | jjdelcerro | Object arg0 = this.getObject(args, 0); |
| 30 | SimpleImage image = ImageReadFunction.createSimpleImage(arg0); |
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| 31 | if( image.isEmpty() ) {
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| 32 | return null; |
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| 33 | } |
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| 34 | return image.getWidth();
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| 35 | 43512 | jjdelcerro | } |
| 36 | } |