[8084] | 1 | /*
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| 2 | * SVG Salamander
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| 3 | * Copyright (c) 2004, Mark McKay
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| 4 | * All rights reserved.
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| 5 | *
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| 6 | * Redistribution and use in source and binary forms, with or
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| 7 | * without modification, are permitted provided that the following
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| 8 | * conditions are met:
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| 9 | *
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| 10 | * - Redistributions of source code must retain the above
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| 11 | * copyright notice, this list of conditions and the following
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| 12 | * disclaimer.
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| 13 | * - Redistributions in binary form must reproduce the above
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| 14 | * copyright notice, this list of conditions and the following
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| 15 | * disclaimer in the documentation and/or other materials
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| 16 | * provided with the distribution.
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| 17 | *
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| 18 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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| 19 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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| 20 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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| 21 | * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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| 22 | * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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| 23 | * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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| 24 | * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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| 25 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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| 26 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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| 27 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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| 28 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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| 29 | * OF THE POSSIBILITY OF SUCH DAMAGE.
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| 30 | *
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| 31 | * Mark McKay can be contacted at mark@kitfox.com. Salamander and other
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| 32 | * projects can be found at http://www.kitfox.com
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| 33 | *
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| 34 | * Created on January 26, 2004, 5:21 PM
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| 35 | */
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| 36 |
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| 37 | package com.kitfox.svg;
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| 38 |
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| 39 | import com.kitfox.svg.Marker.MarkerLayout;
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| 40 | import com.kitfox.svg.Marker.MarkerPos;
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| 41 | import com.kitfox.svg.xml.StyleAttribute;
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| 42 | import java.awt.AlphaComposite;
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| 43 | import java.awt.BasicStroke;
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| 44 | import java.awt.Color;
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| 45 | import java.awt.Composite;
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| 46 | import java.awt.Graphics2D;
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| 47 | import java.awt.Paint;
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| 48 | import java.awt.Shape;
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| 49 | import java.awt.geom.AffineTransform;
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| 50 | import java.awt.geom.Point2D;
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| 51 | import java.awt.geom.Rectangle2D;
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| 52 | import java.net.URI;
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| 53 | import java.util.ArrayList;
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| 54 | import java.util.List;
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| 55 |
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| 56 |
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| 57 |
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| 58 | /**
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| 59 | * Parent of shape objects
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| 60 | *
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| 61 | * @author Mark McKay
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| 62 | * @author <a href="mailto:mark@kitfox.com">Mark McKay</a>
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| 63 | */
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| 64 | abstract public class ShapeElement extends RenderableElement
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| 65 | {
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| 66 |
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| 67 | /**
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| 68 | * This is necessary to get text elements to render the stroke the correct
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| 69 | * width. It is an alternative to producing new font glyph sets at different
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| 70 | * sizes.
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| 71 | */
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| 72 | protected float strokeWidthScalar = 1f;
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| 73 |
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| 74 | /** Creates a new instance of ShapeElement */
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| 75 | public ShapeElement() {
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| 76 | }
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| 77 |
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[10787] | 78 | @Override
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[8084] | 79 | abstract public void render(java.awt.Graphics2D g) throws SVGException;
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| 80 |
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| 81 | /*
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| 82 | protected void setStrokeWidthScalar(float strokeWidthScalar)
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| 83 | {
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| 84 | this.strokeWidthScalar = strokeWidthScalar;
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| 85 | }
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| 86 | */
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| 87 |
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[10787] | 88 | @Override
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[8084] | 89 | void pick(Point2D point, boolean boundingBox, List retVec) throws SVGException
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| 90 | {
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| 91 | // StyleAttribute styleAttrib = new StyleAttribute();
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| 92 | // if (getStyle(styleAttrib.setName("fill")) && getShape().contains(point))
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| 93 | if ((boundingBox ? getBoundingBox() : getShape()).contains(point))
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| 94 | {
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| 95 | retVec.add(getPath(null));
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| 96 | }
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| 97 | }
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| 98 |
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[10787] | 99 | @Override
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[8084] | 100 | void pick(Rectangle2D pickArea, AffineTransform ltw, boolean boundingBox, List retVec) throws SVGException
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| 101 | {
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| 102 | StyleAttribute styleAttrib = new StyleAttribute();
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| 103 | // if (getStyle(styleAttrib.setName("fill")) && getShape().contains(point))
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| 104 | if (ltw.createTransformedShape((boundingBox ? getBoundingBox() : getShape())).intersects(pickArea))
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| 105 | {
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| 106 | retVec.add(getPath(null));
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| 107 | }
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| 108 | }
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| 109 |
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| 110 | private Paint handleCurrentColor(StyleAttribute styleAttrib) throws SVGException
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| 111 | {
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| 112 | if (styleAttrib.getStringValue().equals("currentColor"))
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| 113 | {
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| 114 | StyleAttribute currentColorAttrib = new StyleAttribute();
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| 115 | if (getStyle(currentColorAttrib.setName("color")))
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| 116 | {
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| 117 | if (!currentColorAttrib.getStringValue().equals("none"))
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| 118 | {
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| 119 | return currentColorAttrib.getColorValue();
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| 120 | }
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| 121 | }
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| 122 | return null;
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| 123 | }
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| 124 | else
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| 125 | {
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| 126 | return styleAttrib.getColorValue();
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| 127 | }
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| 128 | }
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| 129 |
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| 130 | protected void renderShape(Graphics2D g, Shape shape) throws SVGException
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| 131 | {
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| 132 | //g.setColor(Color.green);
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| 133 |
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| 134 | StyleAttribute styleAttrib = new StyleAttribute();
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| 135 |
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| 136 | //Don't process if not visible
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| 137 | if (getStyle(styleAttrib.setName("visibility")))
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| 138 | {
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| 139 | if (!styleAttrib.getStringValue().equals("visible")) return;
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| 140 | }
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| 141 |
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| 142 | if (getStyle(styleAttrib.setName("display")))
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| 143 | {
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| 144 | if (styleAttrib.getStringValue().equals("none")) return;
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| 145 | }
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| 146 |
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| 147 | //None, solid color, gradient, pattern
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| 148 | Paint fillPaint = Color.black; //Default to black. Must be explicitly set to none for no fill.
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| 149 | if (getStyle(styleAttrib.setName("fill")))
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| 150 | {
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| 151 | if (styleAttrib.getStringValue().equals("none")) fillPaint = null;
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| 152 | else
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| 153 | {
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| 154 | fillPaint = handleCurrentColor(styleAttrib);
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| 155 | if (fillPaint == null)
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| 156 | {
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| 157 | URI uri = styleAttrib.getURIValue(getXMLBase());
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| 158 | if (uri != null)
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| 159 | {
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| 160 | Rectangle2D bounds = shape.getBounds2D();
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| 161 | AffineTransform xform = g.getTransform();
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| 162 |
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| 163 | SVGElement ele = diagram.getUniverse().getElement(uri);
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| 164 | if (ele != null)
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| 165 | {
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[10787] | 166 | try {
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| 167 | fillPaint = ((FillElement)ele).getPaint(bounds, xform);
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| 168 | } catch (IllegalArgumentException e) {
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| 169 | throw new SVGException(e);
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| 170 | }
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[8084] | 171 | }
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| 172 | }
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| 173 | }
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| 174 | }
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| 175 | }
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| 176 |
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| 177 | //Default opacity
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| 178 | float opacity = 1f;
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| 179 | if (getStyle(styleAttrib.setName("opacity")))
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| 180 | {
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| 181 | opacity = styleAttrib.getRatioValue();
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| 182 | }
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| 183 |
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| 184 | float fillOpacity = opacity;
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| 185 | if (getStyle(styleAttrib.setName("fill-opacity")))
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| 186 | {
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| 187 | fillOpacity *= styleAttrib.getRatioValue();
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| 188 | }
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| 189 |
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| 190 |
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| 191 | Paint strokePaint = null; //Default is to stroke with none
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| 192 | if (getStyle(styleAttrib.setName("stroke")))
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| 193 | {
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| 194 | if (styleAttrib.getStringValue().equals("none")) strokePaint = null;
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| 195 | else
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| 196 | {
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| 197 | strokePaint = handleCurrentColor(styleAttrib);
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| 198 | if (strokePaint == null)
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| 199 | {
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| 200 | URI uri = styleAttrib.getURIValue(getXMLBase());
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| 201 | if (uri != null)
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| 202 | {
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| 203 | Rectangle2D bounds = shape.getBounds2D();
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| 204 | AffineTransform xform = g.getTransform();
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| 205 |
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| 206 | SVGElement ele = diagram.getUniverse().getElement(uri);
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| 207 | if (ele != null)
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| 208 | {
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| 209 | strokePaint = ((FillElement)ele).getPaint(bounds, xform);
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| 210 | }
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| 211 | }
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| 212 | }
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| 213 | }
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| 214 | }
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| 215 |
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| 216 | float[] strokeDashArray = null;
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| 217 | if (getStyle(styleAttrib.setName("stroke-dasharray")))
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| 218 | {
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| 219 | strokeDashArray = styleAttrib.getFloatList();
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| 220 | if (strokeDashArray.length == 0) strokeDashArray = null;
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| 221 | }
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| 222 |
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| 223 | float strokeDashOffset = 0f;
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| 224 | if (getStyle(styleAttrib.setName("stroke-dashoffset")))
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| 225 | {
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| 226 | strokeDashOffset = styleAttrib.getFloatValueWithUnits();
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| 227 | }
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| 228 |
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| 229 | int strokeLinecap = BasicStroke.CAP_BUTT;
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| 230 | if (getStyle(styleAttrib.setName("stroke-linecap")))
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| 231 | {
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| 232 | String val = styleAttrib.getStringValue();
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| 233 | if (val.equals("round"))
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| 234 | {
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| 235 | strokeLinecap = BasicStroke.CAP_ROUND;
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| 236 | }
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| 237 | else if (val.equals("square"))
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| 238 | {
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| 239 | strokeLinecap = BasicStroke.CAP_SQUARE;
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| 240 | }
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| 241 | }
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| 242 |
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| 243 | int strokeLinejoin = BasicStroke.JOIN_MITER;
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| 244 | if (getStyle(styleAttrib.setName("stroke-linejoin")))
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| 245 | {
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| 246 | String val = styleAttrib.getStringValue();
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| 247 | if (val.equals("round"))
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| 248 | {
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| 249 | strokeLinejoin = BasicStroke.JOIN_ROUND;
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| 250 | }
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| 251 | else if (val.equals("bevel"))
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| 252 | {
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| 253 | strokeLinejoin = BasicStroke.JOIN_BEVEL;
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| 254 | }
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| 255 | }
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| 256 |
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| 257 | float strokeMiterLimit = 4f;
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| 258 | if (getStyle(styleAttrib.setName("stroke-miterlimit")))
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| 259 | {
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| 260 | strokeMiterLimit = Math.max(styleAttrib.getFloatValueWithUnits(), 1);
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| 261 | }
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| 262 |
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| 263 | float strokeOpacity = opacity;
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| 264 | if (getStyle(styleAttrib.setName("stroke-opacity")))
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| 265 | {
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| 266 | strokeOpacity *= styleAttrib.getRatioValue();
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| 267 | }
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| 268 |
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| 269 | float strokeWidth = 1f;
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| 270 | if (getStyle(styleAttrib.setName("stroke-width")))
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| 271 | {
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| 272 | strokeWidth = styleAttrib.getFloatValueWithUnits();
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| 273 | }
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| 274 | // if (strokeWidthScalar != 1f)
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| 275 | // {
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| 276 | strokeWidth *= strokeWidthScalar;
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| 277 | // }
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| 278 |
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| 279 | Marker markerStart = null;
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| 280 | if (getStyle(styleAttrib.setName("marker-start")))
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| 281 | {
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| 282 | if (!styleAttrib.getStringValue().equals("none"))
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| 283 | {
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| 284 | URI uri = styleAttrib.getURIValue(getXMLBase());
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| 285 | markerStart = (Marker)diagram.getUniverse().getElement(uri);
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| 286 | }
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| 287 | }
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| 288 |
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| 289 | Marker markerMid = null;
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| 290 | if (getStyle(styleAttrib.setName("marker-mid")))
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| 291 | {
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| 292 | if (!styleAttrib.getStringValue().equals("none"))
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| 293 | {
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| 294 | URI uri = styleAttrib.getURIValue(getXMLBase());
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| 295 | markerMid = (Marker)diagram.getUniverse().getElement(uri);
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| 296 | }
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| 297 | }
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| 298 |
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| 299 | Marker markerEnd = null;
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| 300 | if (getStyle(styleAttrib.setName("marker-end")))
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| 301 | {
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| 302 | if (!styleAttrib.getStringValue().equals("none"))
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| 303 | {
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| 304 | URI uri = styleAttrib.getURIValue(getXMLBase());
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| 305 | markerEnd = (Marker)diagram.getUniverse().getElement(uri);
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| 306 | }
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| 307 | }
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| 308 |
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| 309 |
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| 310 | //Draw the shape
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| 311 | if (fillPaint != null && fillOpacity != 0f)
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| 312 | {
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| 313 | if (fillOpacity <= 0)
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| 314 | {
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| 315 | //Do nothing
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| 316 | }
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| 317 | else if (fillOpacity < 1f)
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| 318 | {
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| 319 | Composite cachedComposite = g.getComposite();
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| 320 | g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, fillOpacity));
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| 321 |
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| 322 | g.setPaint(fillPaint);
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| 323 | g.fill(shape);
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| 324 |
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| 325 | g.setComposite(cachedComposite);
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| 326 | }
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| 327 | else
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| 328 | {
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| 329 | g.setPaint(fillPaint);
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| 330 | g.fill(shape);
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| 331 | }
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| 332 | }
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| 333 |
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| 334 |
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| 335 | if (strokePaint != null && strokeOpacity != 0f)
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| 336 | {
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| 337 | BasicStroke stroke;
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| 338 | if (strokeDashArray == null)
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| 339 | {
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| 340 | stroke = new BasicStroke(strokeWidth, strokeLinecap, strokeLinejoin, strokeMiterLimit);
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| 341 | }
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| 342 | else
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| 343 | {
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| 344 | stroke = new BasicStroke(strokeWidth, strokeLinecap, strokeLinejoin, strokeMiterLimit, strokeDashArray, strokeDashOffset);
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| 345 | }
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| 346 |
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| 347 | Shape strokeShape;
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| 348 | AffineTransform cacheXform = g.getTransform();
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| 349 | if (vectorEffect == VECTOR_EFFECT_NON_SCALING_STROKE)
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| 350 | {
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| 351 | strokeShape = cacheXform.createTransformedShape(shape);
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| 352 | strokeShape = stroke.createStrokedShape(strokeShape);
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| 353 | }
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| 354 | else
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| 355 | {
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| 356 | strokeShape = stroke.createStrokedShape(shape);
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| 357 | }
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| 358 |
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| 359 | if (strokeOpacity <= 0)
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| 360 | {
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| 361 | //Do nothing
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| 362 | }
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| 363 | else
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| 364 | {
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| 365 | Composite cachedComposite = g.getComposite();
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| 366 |
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| 367 | if (strokeOpacity < 1f)
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| 368 | {
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| 369 | g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, strokeOpacity));
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| 370 | }
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| 371 |
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| 372 | if (vectorEffect == VECTOR_EFFECT_NON_SCALING_STROKE)
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| 373 | {
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| 374 | //Set to identity
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| 375 | g.setTransform(new AffineTransform());
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| 376 | }
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| 377 |
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| 378 | g.setPaint(strokePaint);
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| 379 | g.fill(strokeShape);
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| 380 |
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| 381 | if (vectorEffect == VECTOR_EFFECT_NON_SCALING_STROKE)
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| 382 | {
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| 383 | //Set to identity
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| 384 | g.setTransform(cacheXform);
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| 385 | }
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| 386 |
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| 387 | if (strokeOpacity < 1f)
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| 388 | {
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| 389 | g.setComposite(cachedComposite);
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| 390 | }
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| 391 | }
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| 392 | }
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| 393 |
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| 394 | if (markerStart != null || markerMid != null || markerEnd != null)
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| 395 | {
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| 396 | MarkerLayout layout = new MarkerLayout();
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| 397 | layout.layout(shape);
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| 398 |
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| 399 | ArrayList list = layout.getMarkerList();
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| 400 | for (int i = 0; i < list.size(); ++i)
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| 401 | {
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| 402 | MarkerPos pos = (MarkerPos)list.get(i);
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| 403 |
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| 404 | switch (pos.type)
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| 405 | {
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| 406 | case Marker.MARKER_START:
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| 407 | if (markerStart != null)
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| 408 | {
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| 409 | markerStart.render(g, pos, strokeWidth);
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| 410 | }
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| 411 | break;
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| 412 | case Marker.MARKER_MID:
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| 413 | if (markerMid != null)
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| 414 | {
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| 415 | markerMid.render(g, pos, strokeWidth);
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| 416 | }
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| 417 | break;
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| 418 | case Marker.MARKER_END:
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| 419 | if (markerEnd != null)
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| 420 | {
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| 421 | markerEnd.render(g, pos, strokeWidth);
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| 422 | }
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| 423 | break;
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| 424 | }
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| 425 | }
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| 426 | }
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| 427 | }
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| 428 |
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| 429 | abstract public Shape getShape();
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| 430 |
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| 431 | protected Rectangle2D includeStrokeInBounds(Rectangle2D rect) throws SVGException
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| 432 | {
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| 433 | StyleAttribute styleAttrib = new StyleAttribute();
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| 434 | if (!getStyle(styleAttrib.setName("stroke"))) return rect;
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| 435 |
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| 436 | double strokeWidth = 1;
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| 437 | if (getStyle(styleAttrib.setName("stroke-width"))) strokeWidth = styleAttrib.getDoubleValue();
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| 438 |
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| 439 | rect.setRect(
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| 440 | rect.getX() - strokeWidth / 2,
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| 441 | rect.getY() - strokeWidth / 2,
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| 442 | rect.getWidth() + strokeWidth,
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| 443 | rect.getHeight() + strokeWidth);
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| 444 |
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| 445 | return rect;
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| 446 | }
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| 447 |
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| 448 | }
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