Re: [JPP-Devel] theaming feature

Nils Kuhn Wed, 09 Dec 2009 00:46:11 -0800

Hi Luca,
here is another example:

public boolean execute(PlugInContext context) throws Exception{

        this.reportNothingToUndoYet(context);
        Layer lyr=context.getLayerManager().getLayer("yourLayerName");

        //getting the ColorThemingStyle from the layer
        ColorThemingStyle colorThemingStyle = ColorThemingStyle.get(lyr);
        //defining the field on which the ColorThemingStyle is based
    colorThemingStyle.setAttributeName("yourFieldName");
    //creating an invisible BasicStyle and making it the DefaultStyle of the ColorThemingStyle
    BasicStyle defStyle = new BasicStyle();
    defStyle.setAlpha(255);
    colorThemingStyle.setDefaultStyle(defStyle);
    //as an example creating some BasicStyles
    BasicStyle basStyle1 = new BasicStyle();
    basStyle1.setFillColor(new Color(255,255,153));
    basStyle1.setLineColor(new Color(178,178,107));
    basStyle1.setLineWidth(1);
    BasicStyle basStyle2 = new BasicStyle();
    basStyle2.setFillColor(new Color(255,99,75));
    basStyle2.setLineColor(new Color(178,69,52));
    basStyle2.setLineWidth(1);
    BasicStyle basStyle3 = new BasicStyle();
    basStyle3.setFillColor(new Color(127,201,127));
    basStyle3.setLineColor(new Color(88,140,88));
    basStyle3.setLineWidth(1);
    BasicStyle basStyle4 = new BasicStyle();
    basStyle4.setFillColor(new Color(0,153,0));
    basStyle4.setLineColor(new Color(0,107,0));
    basStyle4.setLineWidth(1);;
    basStyle4.setFillPattern(WKTFillPattern.createVerticalHorizontalStripePattern(2, 2, false, true));
    basStyle4.setRenderingFillPattern(true);
    BasicStyle basStyle6 = new BasicStyle();
    basStyle6.setFillColor(new Color(0,0,0));
    basStyle6.setLineColor(new Color(0,0,0));
    basStyle6.setLineWidth(1);
    basStyle6.setFillPattern(WKTFillPattern.createDiagonalStripePattern(2, 2, true, false));
    basStyle6.setRenderingFillPattern(true);
    //creating a HashMap and making it the AttributeValueToBasicStyleMap of the ColorThemingStyle
    //(referencing the values in the field set above to a BasicStyle)
    HashMap<Integer,BasicStyle> attributeToStyleMap = new HashMap<Integer,BasicStyle>();
        attributeToStyleMap.put(1, basStyle1);
        attributeToStyleMap.put(2, basStyle2);
        attributeToStyleMap.put(3, basStyle3);
        attributeToStyleMap.put(4, basStyle4);
        attributeToStyleMap.put(6, basStyle6);
    colorThemingStyle.setAttributeValueToBasicStyleMap(attributeToStyleMap);
    //creating a HashMap and making it the AttributeValueToLabelMap of the ColorThemingStyle
    //(referencing the values in the field set above to a Label)
    HashMap<Integer,String> attributeToLabelMap = new HashMap<Integer,String>();
    attributeToLabelMap.put(1, "firstLabel");
    attributeToLabelMap.put(2, "secondLabel");
    attributeToLabelMap.put(3, "thirdLabel");
    attributeToLabelMap.put(4, "fourthLabel");
    attributeToLabelMap.put(6, "fifthLabel");
    colorThemingStyle.setAttributeValueToLabelMap(attributeToLabelMap);
    //disable the BasicStyle and enable the ColorThemingStyle of the layer
    colorThemingStyle.setEnabled(true);
    lyr.getBasicStyle().setEnabled(false);
    lyr.fireAppearanceChanged();
    bolRueck=true;
}

Larry Becker schrieb:

Here is an example:

   public boolean execute(final PlugInContext context) throws Exception
    {
        reportNothingToUndoYet(context);
        new CopySelectedItemsPlugIn().execute(context);

        Layer[] selectedLayers = context.getLayerNamePanel().getSelectedLayers();

        FeatureSchema featureSchema = new FeatureSchema();
        featureSchema.addAttribute("GEOMETRY", AttributeType.GEOMETRY);
        featureSchema.addAttribute(LAYER, AttributeType.STRING);
        //add all attributes from selected layers
        for (int i=0; i<selectedLayers.length; i++) {
            FeatureSchema schema = selectedLayers[i].getFeatureCollectionWrapper()
                .getFeatureSchema();
            for (int j=0; j<schema.getAttributeCount(); j++) {
                String name = schema.getAttributeName(j);
                if (!featureSchema.hasAttribute(name)) {
                    featureSchema.addAttribute(name, schema.getAttributeType(name));
                } else if (schema.getAttributeType(name)
                        != featureSchema.getAttributeType(name)) {
                    featureSchema.addAttribute(name
                            +getAttributeTypeChar(schema.getAttributeType(name)),
                            schema.getAttributeType(name));
                }
            }
        }

        FeatureDataset featureDataset = new FeatureDataset(featureSchema);

        Collection selectedCategories = context.getLayerNamePanel().getSelectedCategories();
        Layer newLayer = context.addLayer(selectedCategories.isEmpty()
            ? StandardCategoryNames.RESULT
            : selectedCategories.iterator().next().toString(), "Combined",
            featureDataset);

        newLayer.setFeatureCollectionModified(true).setEditable(true);
        Map attributeToStyleMap = new HashMap();
        ColorScheme colorScheme = ColorScheme.create("Set 3 (ColorBrewer)");
        for (int i=0; i<selectedLayers.length; i++) {
            Layer layer = selectedLayers[i];
            Collection features = layer.getFeatureCollectionWrapper().getFeatures();
            newLayer.getFeatureCollectionWrapper().addAll(
                    conform(features,featureSchema, layer.getName()));
            attributeToStyleMap.put(layer.getName(), new BasicStyle(colorScheme.next()));
        }

        newLayer.getBasicStyle().setEnabled(false);
        ColorThemingStyle themeStyle = new ColorThemingStyle(LAYER, attributeToStyleMap, new BasicStyle(Color.gray));
        themeStyle.setEnabled(true);
        newLayer.addStyle(themeStyle);
        ColorThemingStyle.get(newLayer).setEnabled(true);
        newLayer.removeStyle(ColorThemingStyle.get(newLayer));
        ColorThemingStyle.get(newLayer).setEnabled(true);
        newLayer.getBasicStyle().setEnabled(false);

        return true;
    }

regards,
Larry

On Tue, Dec 8, 2009 at 10:54 AM, luca marletta <lucama...@gmail.com> wrote:

Hi All,
first tanks for the new openjump 1.3.1!!

This my question:

Can some one give me an suggestion which way I can apply a color
scheme for each feature based on a field. I mean the same effect that
from theme panel but programmaticaly.

I'm working on a plugin for check polygon and I'd like to see the
result immediately by colors.

I need an indication for some class or some piece of code.

Thanks a lot

luca

luca marletta
www.beopen.it

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Re: [JPP-Devel] theaming feature

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