| /* ==================================================================== |
| Licensed to the Apache Software Foundation (ASF) under one or more |
| contributor license agreements. See the NOTICE file distributed with |
| this work for additional information regarding copyright ownership. |
| The ASF licenses this file to You under the Apache License, Version 2.0 |
| (the "License"); you may not use this file except in compliance with |
| the License. You may obtain a copy of the License at |
| |
| http://www.apache.org/licenses/LICENSE-2.0 |
| |
| Unless required by applicable law or agreed to in writing, software |
| distributed under the License is distributed on an "AS IS" BASIS, |
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| See the License for the specific language governing permissions and |
| limitations under the License. |
| ==================================================================== */ |
| package org.apache.poi.examples.xssf.usermodel; |
| |
| import java.io.FileOutputStream; |
| import java.io.IOException; |
| import java.io.OutputStream; |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import org.apache.poi.ss.usermodel.CellStyle; |
| import org.apache.poi.ss.usermodel.CreationHelper; |
| import org.apache.poi.ss.usermodel.HorizontalAlignment; |
| import org.apache.poi.ss.usermodel.VerticalAlignment; |
| import org.apache.poi.xssf.usermodel.XSSFCell; |
| import org.apache.poi.xssf.usermodel.XSSFCellStyle; |
| import org.apache.poi.xssf.usermodel.XSSFRow; |
| import org.apache.poi.xssf.usermodel.XSSFSheet; |
| import org.apache.poi.xssf.usermodel.XSSFWorkbook; |
| import org.openxmlformats.schemas.spreadsheetml.x2006.main.impl.CTRowImpl; |
| |
| /** |
| * Shows how various alignment options work. |
| * |
| * Modified by Cristian Petrula, Romania on May 26, 2010 |
| * New method was added centerAcrossSelection to center a column content over |
| * one selection using {@link HorizontalAlignment#CENTER_SELECTION} |
| * To create this method example was change for XSSF only and the previous |
| * AligningCells.java example has been moved into the SS examples folder. |
| */ |
| public class AligningCells { |
| |
| public static void main(String[] args) throws IOException { |
| try (XSSFWorkbook wb = new XSSFWorkbook()) { |
| |
| XSSFSheet sheet = wb.createSheet(); |
| XSSFRow row = sheet.createRow(2); |
| row.setHeightInPoints(30); |
| for (int i = 0; i < 8; i++) { |
| //column width is set in units of 1/256th of a character width |
| sheet.setColumnWidth(i, 256 * 15); |
| } |
| |
| createCell(wb, row, 0, HorizontalAlignment.CENTER, VerticalAlignment.BOTTOM); |
| createCell(wb, row, 1, HorizontalAlignment.CENTER_SELECTION, VerticalAlignment.BOTTOM); |
| createCell(wb, row, 2, HorizontalAlignment.FILL, VerticalAlignment.CENTER); |
| createCell(wb, row, 3, HorizontalAlignment.GENERAL, VerticalAlignment.CENTER); |
| createCell(wb, row, 4, HorizontalAlignment.JUSTIFY, VerticalAlignment.JUSTIFY); |
| createCell(wb, row, 5, HorizontalAlignment.LEFT, VerticalAlignment.TOP); |
| createCell(wb, row, 6, HorizontalAlignment.RIGHT, VerticalAlignment.TOP); |
| |
| //center text over B4, C4, D4 |
| row = sheet.createRow(3); |
| centerAcrossSelection(wb, row, 1, 3, VerticalAlignment.CENTER); |
| |
| // Write the output to a file |
| try (OutputStream fileOut = new FileOutputStream("xssf-align.xlsx")) { |
| wb.write(fileOut); |
| } |
| } |
| } |
| |
| /** |
| * Creates a cell and aligns it a certain way. |
| * |
| * @param wb the workbook |
| * @param row the row to create the cell in |
| * @param column the column number to create the cell in |
| * @param halign the horizontal alignment for the cell. |
| */ |
| private static void createCell(XSSFWorkbook wb, XSSFRow row, int column, |
| HorizontalAlignment halign, VerticalAlignment valign) { |
| CreationHelper ch = wb.getCreationHelper(); |
| XSSFCell cell = row.createCell(column); |
| cell.setCellValue(ch.createRichTextString("Align It")); |
| CellStyle cellStyle = wb.createCellStyle(); |
| cellStyle.setAlignment(halign); |
| cellStyle.setVerticalAlignment(valign); |
| cell.setCellStyle(cellStyle); |
| } |
| |
| /** |
| * Center a text over multiple columns using ALIGN_CENTER_SELECTION |
| * |
| * @param wb the workbook |
| * @param row the row to create the cell in |
| * @param start_column the column number to create the cell in and where the selection starts |
| * @param end_column the column number where the selection ends |
| * @param valign the horizontal alignment for the cell. |
| */ |
| private static void centerAcrossSelection(XSSFWorkbook wb, XSSFRow row, |
| int start_column, int end_column, VerticalAlignment valign) { |
| CreationHelper ch = wb.getCreationHelper(); |
| |
| // Create cell style with ALIGN_CENTER_SELECTION |
| XSSFCellStyle cellStyle = wb.createCellStyle(); |
| cellStyle.setAlignment(HorizontalAlignment.CENTER_SELECTION); |
| cellStyle.setVerticalAlignment(valign); |
| |
| // Create cells over the selected area |
| for (int i = start_column; i <= end_column; i++) { |
| XSSFCell cell = row.createCell(i); |
| cell.setCellStyle(cellStyle); |
| } |
| |
| // Set value to the first cell |
| XSSFCell cell = row.getCell(start_column); |
| cell.setCellValue(ch.createRichTextString("Align It")); |
| |
| // Make the selection |
| CTRowImpl ctRow = (CTRowImpl) row.getCTRow(); |
| |
| // Add object with format start_coll:end_coll. For example 1:3 will span from |
| // cell 1 to cell 3, where the column index starts with 0 |
| // |
| // You can add multiple spans for one row |
| Object span = start_column + ":" + end_column; |
| |
| List<Object> spanList = new ArrayList<>(); |
| spanList.add(span); |
| |
| //add spns to the row |
| ctRow.setSpans(spanList); |
| } |
| } |