Java tutorial
/* * Copyright (C) 2009 Camptocamp * * This file is part of MapFish Server * * MapFish Server is free software: you can redistribute it and/or modify * it under the terms of the GNU Lesser General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * MapFish Server is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public License * along with MapFish Server. If not, see <http://www.gnu.org/licenses/>. */ package org.mapfish.print.config.layout; import com.lowagie.text.DocumentException; import com.lowagie.text.Font; import com.lowagie.text.FontFactory; import com.lowagie.text.Paragraph; import com.lowagie.text.pdf.BaseFont; import com.lowagie.text.pdf.PdfPCell; import com.lowagie.text.pdf.PdfPTable; import org.apache.log4j.Logger; import org.mapfish.print.PDFUtils; import org.mapfish.print.RenderingContext; import org.mapfish.print.InvalidValueException; import org.mapfish.print.utils.PJsonArray; import org.mapfish.print.utils.PJsonObject; import java.net.URI; /** * Bean to configure a !legends block. * <p/> * See http://trac.mapfish.org/trac/mapfish/wiki/PrintModuleServer#Legendsblock */ public class LegendsBlock extends Block { public static final Logger LOGGER = Logger.getLogger(LegendsBlock.class); private double maxIconWidth = 0; private double maxIconHeight = 8; private double classIndentation = 20; private double layerSpace = 5; private double classSpace = 2; private String layerFont = "Helvetica"; protected double layerFontSize = 10; private String classFont = "Helvetica"; protected double classFontSize = 8; private String fontEncoding = BaseFont.WINANSI; public void render(PJsonObject params, PdfElement target, RenderingContext context) throws DocumentException { PdfPTable table = new PdfPTable(1); table.setWidthPercentage(100f); Font layerPdfFont = getLayerPdfFont(); Font classPdfFont = getClassPdfFont(); PJsonArray legends = context.getGlobalParams().optJSONArray("legends"); if (legends != null && legends.size() > 0) { for (int i = 0; i < legends.size(); ++i) { PJsonObject layer = legends.getJSONObject(i); final PdfPCell cell = createLine(context, 0.0, layer, layerPdfFont, params); if (i > 0) { cell.setPaddingTop((float) layerSpace); } table.addCell(cell); PJsonArray classes = layer.getJSONArray("classes"); for (int j = 0; j < classes.size(); ++j) { PJsonObject clazz = classes.getJSONObject(j); final PdfPCell classCell = createLine(context, classIndentation, clazz, classPdfFont, params); classCell.setPaddingTop((float) classSpace); table.addCell(classCell); } } } table.setSpacingAfter((float) spacingAfter); target.add(table); } private PdfPCell createLine(RenderingContext context, double indent, PJsonObject node, Font pdfFont, PJsonObject params) throws DocumentException { final String name = node.getString("name"); final String icon = node.optString("icon"); final PJsonArray icons = node.optJSONArray("icons"); final Paragraph result = new Paragraph(); result.setFont(pdfFont); if (icon != null) { result.add(PDFUtils.createImageChunk(context, maxIconWidth, maxIconHeight, URI.create(icon), 0.0f)); result.add(" "); } if (icons != null) { for (int i = 0; i < icons.size(); ++i) { String iconItem = icons.getString(i); try { result.add(PDFUtils.createImageChunk(context, maxIconWidth, maxIconHeight, URI.create(iconItem), 0.0f)); result.add(" "); } catch (InvalidValueException e) { LOGGER.warn("Failed to create image chunk: " + e.getMessage()); } } } result.add(name); final PdfPCell cell = new PdfPCell(result); cell.setBorder(PdfPCell.NO_BORDER); cell.setPadding(0f); cell.setPaddingLeft((float) indent); if (getBackgroundColorVal(context, params) != null) { cell.setBackgroundColor(getBackgroundColorVal(context, params)); } return cell; } public void setMaxIconWidth(double maxIconWidth) { this.maxIconWidth = maxIconWidth; if (maxIconWidth < 0.0) throw new InvalidValueException("maxIconWidth", maxIconWidth); } public void setMaxIconHeight(double maxIconHeight) { this.maxIconHeight = maxIconHeight; if (maxIconHeight < 0.0) throw new InvalidValueException("maxIconHeight", maxIconHeight); } public void setClassIndentation(double classIndentation) { this.classIndentation = classIndentation; if (classIndentation < 0.0) throw new InvalidValueException("classIndentation", classIndentation); } public void setClassFont(String classFont) { this.classFont = classFont; } public void setClassFontSize(double classFontSize) { this.classFontSize = classFontSize; if (classFontSize < 0.0) throw new InvalidValueException("classFontSize", classFontSize); } public String getClassFont() { return classFont; } protected Font getLayerPdfFont() { return FontFactory.getFont(layerFont, fontEncoding, (float) layerFontSize); } protected Font getClassPdfFont() { return FontFactory.getFont(classFont, fontEncoding, (float) classFontSize); } public void setLayerSpace(double layerSpace) { this.layerSpace = layerSpace; if (layerSpace < 0.0) throw new InvalidValueException("layerSpace", layerSpace); } public void setClassSpace(double classSpace) { this.classSpace = classSpace; if (classSpace < 0.0) throw new InvalidValueException("classSpace", classSpace); } public void setLayerFont(String layerFont) { this.layerFont = layerFont; } public void setLayerFontSize(double layerFontSize) { this.layerFontSize = layerFontSize; if (layerFontSize < 0.0) throw new InvalidValueException("layerFontSize", layerFontSize); } public void setFontEncoding(String fontEncoding) { this.fontEncoding = fontEncoding; } }