Examples of org.geotools.styling.Stroke

org.geotools.styling.Stroke

l.opengeospatial.org/files/?artifact_id=1188"> OGC Styled-Layer Descriptor Report (OGC 02-070) version 1.0.0.:

 <xsd:element name="Stroke"> <xsd:annotation> <xsd:documentation> A "Stroke" specifies the appearance of a linear geometry.  It is defined in parallel with SVG strokes.  The following CssParameters may be used: "stroke" (color), "stroke-opacity", "stroke-width", "stroke-linejoin", "stroke-linecap", "stroke-dasharray", and "stroke-dashoffset". </xsd:documentation> </xsd:annotation> <xsd:complexType> <xsd:sequence> <xsd:choice minOccurs="0"> <xsd:element ref="sld:GraphicFill"/> <xsd:element ref="sld:GraphicStroke"/> </xsd:choice> <xsd:element ref="sld:CssParameter" minOccurs="0" maxOccurs="unbounded"/> </xsd:sequence> </xsd:complexType> </xsd:element>

Renderers can use this information when displaying styled features, though it must be remembered that not all renderers will be able to fully represent strokes as set out by this interface. For example, opacity may not be supported.

Notes:

The graphical parameters and their values are derived from SVG/CSS2 standards with names and semantics which are as close as possible.

@source $URL$ @version $Id$ @author James Macgill

      return mark;
    }
  }


  private Stroke createStroke(FeatureStyleInfo featureStyle) {
    Stroke stroke = styleBuilder.createStroke(styleBuilder.literalExpression(featureStyle.getStrokeColor()),
        styleBuilder.literalExpression(featureStyle.getStrokeWidth()),
        styleBuilder.literalExpression(featureStyle.getStrokeOpacity()));
    if (featureStyle.getDashArray() != null) {
      String[] strs = featureStyle.getDashArray().split(",");
      float[] nrs = new float[strs.length];
      for (int i = 0; i < strs.length; i++) {
        try {
          nrs[i] = Float.parseFloat(strs[i]);
        } catch (NumberFormatException e) {
          log.warn("unparseable dash array " + featureStyle.getDashArray(), e);
        }
      }
      stroke.setDashArray(nrs);
    }
    return stroke;
  }

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    public void visit( PointSymbolizer arg0 ) {
        arg0.getGraphic().accept(this);
    }


    public void visit( LineSymbolizer arg0 ) {
        Stroke stroke = arg0.getStroke();
        if( stroke!=null )
            stroke.accept(this);
    }

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    public void visit( PolygonSymbolizer arg0 ) {
        Fill fill = arg0.getFill();
        if (fill != null)
            fill.accept(this);
        Stroke stroke = arg0.getStroke();
        if( stroke!=null )
            stroke.accept(this);
    }

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    public void visit( Mark arg0 ) {
        Fill fill = arg0.getFill();
        if (fill != null)
            fill.accept(this);


        Stroke stroke = arg0.getStroke();
        if( stroke!=null )
            stroke.accept(this);
    }

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        }


        for( GraphicalSymbol gs : graphic.graphicalSymbols() ) {
            if ((gs != null) && (gs instanceof Mark)) {
                Mark mark = (Mark) gs;
                Stroke stroke = mark.getStroke();
                if (stroke != null) {
                    Color colour = color(stroke);
                    if (colour == null) {
                        return null;
                    }
                    Expression opacity = stroke.getOpacity();
                    if (opacity == null)
                        opacity = ff.literal(1.0);
                    float alpha = (float) Filters.asDouble(opacity);
                    colour = new Color(colour.getRed() / 255f, colour.getGreen() / 255f, colour.getBlue() / 255f, alpha);
                    if (colour != null) {

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    private void setStylingElements( LineSymbolizer symbolizer ) {


        Color colour = null;
        int width = SLDs.NOTFOUND;


        Stroke stroke = symbolizer.getStroke();
        if (stroke != null) {
            colour = SLDs.lineColor(symbolizer);
            width = SLDs.lineWidth(symbolizer);


        }

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     */
    public void apply() {
        LineSymbolizer symbolizer = (LineSymbolizer) getContent();
        StyleBuilder styleBuilder = getStyleBuilder();


        Stroke stroke = symbolizer.getStroke();
        if (stroke == null) {
            stroke = getStyleBuilder().createStroke();
            symbolizer.setStroke(stroke);
        }


        Color c = lineColourEditor.getColor();


        stroke.setWidth(styleBuilder.literalExpression(lineWidth.getSelection()));
        stroke.setColor(styleBuilder.colorExpression(c));
        stroke.setOpacity(styleBuilder.literalExpression(lineOpacity.getSelection()
                / opacityMaxValueFloat));
        stroke.setLineJoin(styleBuilder.literalExpression(linejoinCombo.getText()));
        stroke.setLineCap(styleBuilder.literalExpression(linecapCombo.getText()));


//      TODO: This functionality to be added later with a better UI...goes with other task
//        if (!lineDashText.getText().equalsIgnoreCase("")
//                && !lineSpaceText.getText().equalsIgnoreCase("")) {
//            float dash = Float.parseFloat(lineDashText.getText());

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     */
    public void setStroke( Stroke aLine, Mode mode, Color defaultColor ) {
        listen(false);
        try {
            boolean enabled=true;
            Stroke line=aLine;


            if ( line==null ){
                StyleBuilder builder=new StyleBuilder(); 
                line=builder.createStroke(defaultColor);
                enabled=false;

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        DuplicatingStyleVisitor copyStyle = new DuplicatingStyleVisitor();
        rule.accept(copyStyle);
        Rule newRule = (Rule) copyStyle.getCopy();


        int pointSize = 0;
        Stroke stroke = null;
        Symbolizer[] symbolizers = newRule.getSymbolizers();
        if (symbolizers.length > 0) {
            Symbolizer symbolizer = newRule.getSymbolizers()[0];
            if (symbolizer instanceof PointSymbolizer) {
                PointSymbolizer pointSymbolizer = (PointSymbolizer) symbolizer;
                pointSize = SLDs.pointSize(pointSymbolizer);
                stroke = SLDs.stroke(pointSymbolizer);
            }
        }
        int strokeSize = 0;
        if (stroke != null) {
            strokeSize = SLDs.width(stroke);
            if (strokeSize < 0) {
                strokeSize = 1;
                stroke.setWidth(ff.literal(strokeSize));
            }
        }
        pointSize = pointSize + 2 * strokeSize;
        if (pointSize <= 0) {
            pointSize = width;

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    public static BufferedImage polygonRuleToImage( final Rule rule, int width, int height ) {
        DuplicatingStyleVisitor copyStyle = new DuplicatingStyleVisitor();
        rule.accept(copyStyle);
        Rule newRule = (Rule) copyStyle.getCopy();


        Stroke stroke = null;
        Symbolizer[] symbolizers = newRule.getSymbolizers();
        if (symbolizers.length > 0) {
            Symbolizer symbolizer = symbolizers[0];
            if (symbolizer instanceof PolygonSymbolizer) {
                PolygonSymbolizer polygonSymbolizer = (PolygonSymbolizer) symbolizer;
                stroke = SLDs.stroke(polygonSymbolizer);
            }
        }
        int strokeSize = 0;
        if (stroke != null) {
            strokeSize = SLDs.width(stroke);
            if (strokeSize < 0) {
                strokeSize = 0;
                stroke.setWidth(ff.literal(strokeSize));
            }
        }


        // pointSize = width;
        BufferedImage finalImage = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);

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