Java tutorial
/* Copyright 2008-2011 Gephi Authors : Yudi Xue <yudi.xue@usask.ca>, Mathieu Bastian Website : http://www.gephi.org This file is part of Gephi. DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. Copyright 2011 Gephi Consortium. All rights reserved. The contents of this file are subject to the terms of either the GNU General Public License Version 3 only ("GPL") or the Common Development and Distribution License("CDDL") (collectively, the "License"). You may not use this file except in compliance with the License. You can obtain a copy of the License at http://gephi.org/about/legal/license-notice/ or /cddl-1.0.txt and /gpl-3.0.txt. See the License for the specific language governing permissions and limitations under the License. When distributing the software, include this License Header Notice in each file and include the License files at /cddl-1.0.txt and /gpl-3.0.txt. If applicable, add the following below the License Header, with the fields enclosed by brackets [] replaced by your own identifying information: "Portions Copyrighted [year] [name of copyright owner]" If you wish your version of this file to be governed by only the CDDL or only the GPL Version 3, indicate your decision by adding "[Contributor] elects to include this software in this distribution under the [CDDL or GPL Version 3] license." If you do not indicate a single choice of license, a recipient has the option to distribute your version of this file under either the CDDL, the GPL Version 3 or to extend the choice of license to its licensees as provided above. However, if you add GPL Version 3 code and therefore, elected the GPL Version 3 license, then the option applies only if the new code is made subject to such option by the copyright holder. Contributor(s): Portions Copyrighted 2011 Gephi Consortium. */ package org.frobic.colorednodes.renderers; import com.itextpdf.text.pdf.PdfContentByte; import com.itextpdf.text.pdf.PdfGState; import java.awt.Color; import java.util.ArrayList; import org.frobic.colorednodes.items.NodeItem; import org.gephi.graph.api.Node; import org.gephi.preview.api.*; import org.gephi.preview.spi.Renderer; import org.gephi.preview.types.DependantColor; import org.openide.util.NbBundle; import org.openide.util.lookup.ServiceProvider; import org.w3c.dom.Element; import processing.core.PGraphics; /** * * @author Yudi Xue, Mathieu Bastian */ @ServiceProvider(service = Renderer.class, position = 300) public class NewNodeRenderer extends org.gephi.preview.plugin.renderers.NodeRenderer { //Default values @Override public void preProcess(PreviewModel previewModel) { } @Override public void render(Item item, RenderTarget target, PreviewProperties properties) { if (target instanceof ProcessingTarget) { renderProcessing(item, (ProcessingTarget) target, properties); } else if (target instanceof SVGTarget) { renderSVG(item, (SVGTarget) target, properties); } else if (target instanceof PDFTarget) { renderPDF(item, (PDFTarget) target, properties); } } @Override public void renderProcessing(Item item, ProcessingTarget target, PreviewProperties properties) { //Params Float x = item.getData(NodeItem.X); Float y = item.getData(NodeItem.Y); Float angle = item.getData(NodeItem.ANGLE); Float size = item.getData(NodeItem.SIZE); Color color = item.getData(NodeItem.COLOR); Integer nbcolors = item.getData(NodeItem.NBCOLOR); Color[] colors = item.getData(NodeItem.COLORS); Color borderColor = ((DependantColor) properties.getValue(PreviewProperty.NODE_BORDER_COLOR)) .getColor(color); float borderSize = properties.getFloatValue(PreviewProperty.NODE_BORDER_WIDTH); int alpha = (int) ((properties.getFloatValue(PreviewProperty.NODE_OPACITY) / 100f) * 255f); if (alpha > 255) { alpha = 255; } //Graphics PGraphics graphics = target.getGraphics(); if (borderSize > 0) { graphics.stroke(borderColor.getRed(), borderColor.getGreen(), borderColor.getBlue(), alpha); graphics.strokeWeight(borderSize); } else { graphics.noStroke(); } for (int i = 0; i < nbcolors; i++) { graphics.fill(colors[i].getRed(), colors[i].getGreen(), colors[i].getBlue(), alpha); if (size >= 0.5) { graphics.arc(x, y, size, size, 6.2832f * (nbcolors - i - 1) / nbcolors - angle, 6.2832f * (nbcolors - i) / nbcolors - angle); } } } @Override public void renderSVG(Item item, SVGTarget target, PreviewProperties properties) { Node node = (Node) item.getSource(); //Params Float x = item.getData(NodeItem.X); Float y = item.getData(NodeItem.Y); Float size = item.getData(NodeItem.SIZE); size /= 2f; Color color = item.getData(NodeItem.COLOR); Integer nbcolors = item.getData(NodeItem.NBCOLOR); Color[] colors = item.getData(NodeItem.COLORS); Color borderColor = ((DependantColor) properties.getValue(PreviewProperty.NODE_BORDER_COLOR)) .getColor(color); float borderSize = properties.getFloatValue(PreviewProperty.NODE_BORDER_WIDTH); float alpha = properties.getIntValue(PreviewProperty.NODE_OPACITY) / 100f; if (alpha > 1) { alpha = 1; } Element nodeElem = target.createElement("circle"); nodeElem.setAttribute("class", node.getNodeData().getId()); nodeElem.setAttribute("cx", x.toString()); nodeElem.setAttribute("cy", y.toString()); nodeElem.setAttribute("r", size.toString()); nodeElem.setAttribute("fill", target.toHexString(color)); nodeElem.setAttribute("fill-opacity", "" + alpha); if (borderSize > 0) { nodeElem.setAttribute("stroke", target.toHexString(borderColor)); nodeElem.setAttribute("stroke-width", new Float(borderSize * target.getScaleRatio()).toString()); nodeElem.setAttribute("stroke-opacity", "" + alpha); } target.getTopElement(SVGTarget.TOP_NODES).appendChild(nodeElem); } @Override public void renderPDF(Item item, PDFTarget target, PreviewProperties properties) { Float x = item.getData(NodeItem.X); Float y = item.getData(NodeItem.Y); Float size = item.getData(NodeItem.SIZE); Float angle = item.getData(NodeItem.ANGLE); size /= 2f; Color color = item.getData(NodeItem.COLOR); Integer nbcolors = item.getData(NodeItem.NBCOLOR); Color[] colors = item.getData(NodeItem.COLORS); Color borderColor = ((DependantColor) properties.getValue(PreviewProperty.NODE_BORDER_COLOR)) .getColor(color); float borderSize = properties.getFloatValue(PreviewProperty.NODE_BORDER_WIDTH); float alpha = properties.getIntValue(PreviewProperty.NODE_OPACITY) / 100f; PdfContentByte cb = target.getContentByte(); cb.setRGBColorStroke(borderColor.getRed(), borderColor.getGreen(), borderColor.getBlue()); cb.setLineWidth(borderSize); cb.setRGBColorFill(color.getRed(), color.getGreen(), color.getBlue()); if (alpha < 1f) { cb.saveState(); PdfGState gState = new PdfGState(); gState.setFillOpacity(alpha); gState.setStrokeOpacity(alpha); cb.setGState(gState); } for (int i = 0; i < nbcolors; i++) { cb.setRGBColorFill(colors[nbcolors - i - 1].getRed(), colors[nbcolors - i - 1].getGreen(), colors[nbcolors - i - 1].getBlue()); if (size >= 0.5) { cb.newPath(); ArrayList ar = cb.bezierArc(x - size, -y + size, x + size, 0 - size - y, 360f * (nbcolors - i - 1) / nbcolors + (360f / 6.28f) * angle, 360f * (1) / nbcolors); //cb.arc(x-size,-y+size,x+size,0-size-y,360f*(nbcolors-i-1)/nbcolors+angle,360f*(1)/nbcolors) ; cb.moveTo(x, -y); float pt[] = (float[]) ar.get(0); cb.moveTo(pt[0], pt[1]); for (int k = 0; k < ar.size(); ++k) { pt = (float[]) ar.get(k); cb.curveTo(pt[2], pt[3], pt[4], pt[5], pt[6], pt[7]); } cb.lineTo(x, -y); //strokeAndFill(); // cb.ClosePathFillStroke(); if (borderSize > 0) { cb.fill(); } else { cb.fill(); } if (borderSize > 0) { cb.circle(x, -y, size); cb.stroke(); } } } if (alpha < 1f) { cb.restoreState(); } } @Override public PreviewProperty[] getProperties() { return new PreviewProperty[] { PreviewProperty.createProperty(this, PreviewProperty.NODE_BORDER_WIDTH, Float.class, NbBundle.getMessage(NewNodeRenderer.class, "NewNodeRenderer.property.borderWidth.displayName"), NbBundle.getMessage(NewNodeRenderer.class, "NewNodeRenderer.property.borderWidth.description"), PreviewProperty.CATEGORY_NODES).setValue(defaultBorderWidth), PreviewProperty .createProperty(this, PreviewProperty.NODE_BORDER_COLOR, DependantColor.class, NbBundle.getMessage(NewNodeRenderer.class, "NewNodeRenderer.property.borderColor.displayName"), NbBundle.getMessage(NewNodeRenderer.class, "NewNodeRenderer.property.borderColor.description"), PreviewProperty.CATEGORY_NODES) .setValue(defaultBorderColor), PreviewProperty.createProperty(this, PreviewProperty.NODE_OPACITY, Float.class, NbBundle.getMessage(NewNodeRenderer.class, "NewNodeRenderer.property.opacity.displayName"), NbBundle.getMessage(NewNodeRenderer.class, "NewNodeRenderer.property.opacity.description"), PreviewProperty.CATEGORY_NODES).setValue(defaultOpacity) }; } @Override public boolean isRendererForitem(Item item, PreviewProperties properties) { if (item instanceof NodeItem) { return true; } return false; } public String getName() { return NbBundle.getMessage(NewNodeRenderer.class, "NewNodeRenderer.name"); } }