155 lines
5.5 KiB
Java
155 lines
5.5 KiB
Java
/* ====================================================================
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Licensed to the Apache Software Foundation (ASF) under one or more
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contributor license agreements. See the NOTICE file distributed with
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this work for additional information regarding copyright ownership.
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The ASF licenses this file to You under the Apache License, Version 2.0
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(the "License"); you may not use this file except in compliance with
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the License. You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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==================================================================== */
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package org.apache.poi.xssf.model;
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import java.io.IOException;
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import java.io.OutputStream;
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import org.apache.poi.POIXMLDocumentPart;
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import org.apache.poi.openxml4j.opc.PackagePart;
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import org.apache.poi.openxml4j.opc.PackageRelationship;
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import org.apache.poi.xssf.usermodel.XSSFColor;
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import org.apache.xmlbeans.XmlException;
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import org.apache.xmlbeans.XmlOptions;
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import org.openxmlformats.schemas.drawingml.x2006.main.CTColor;
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import org.openxmlformats.schemas.drawingml.x2006.main.CTColorScheme;
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import org.openxmlformats.schemas.drawingml.x2006.main.ThemeDocument;
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/**
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* Class that represents theme of XLSX document. The theme includes specific
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* colors and fonts.
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*/
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public class ThemesTable extends POIXMLDocumentPart {
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private ThemeDocument theme;
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/**
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* Create a new, empty ThemesTable
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*/
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public ThemesTable() {
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super();
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theme = ThemeDocument.Factory.newInstance();
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theme.addNewTheme().addNewThemeElements();
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}
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/**
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* Construct a ThemesTable.
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* @param part A PackagePart.
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* @param rel A PackageRelationship.
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*/
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public ThemesTable(PackagePart part, PackageRelationship rel) throws IOException {
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super(part, rel);
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try {
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theme = ThemeDocument.Factory.parse(part.getInputStream());
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} catch(XmlException e) {
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throw new IOException(e.getLocalizedMessage(), e);
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}
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}
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/**
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* Construct a ThemesTable from an existing ThemeDocument.
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* @param theme A ThemeDocument.
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*/
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public ThemesTable(ThemeDocument theme) {
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this.theme = theme;
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}
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/**
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* Convert a theme "index" into a color.
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* @param idx A theme "index"
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* @return The mapped XSSFColor, or null if not mapped.
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*/
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public XSSFColor getThemeColor(int idx) {
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// Theme color references are NOT positional indices into the color scheme,
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// i.e. these keys are NOT the same as the order in which theme colors appear
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// in theme1.xml. They are keys to a mapped color.
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CTColorScheme colorScheme = theme.getTheme().getThemeElements().getClrScheme();
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CTColor ctColor;
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switch (idx) {
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case 0: ctColor = colorScheme.getLt1(); break;
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case 1: ctColor = colorScheme.getDk1(); break;
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case 2: ctColor = colorScheme.getLt2(); break;
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case 3: ctColor = colorScheme.getDk2(); break;
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case 4: ctColor = colorScheme.getAccent1(); break;
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case 5: ctColor = colorScheme.getAccent2(); break;
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case 6: ctColor = colorScheme.getAccent3(); break;
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case 7: ctColor = colorScheme.getAccent4(); break;
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case 8: ctColor = colorScheme.getAccent5(); break;
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case 9: ctColor = colorScheme.getAccent6(); break;
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case 10: ctColor = colorScheme.getHlink(); break;
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case 11: ctColor = colorScheme.getFolHlink(); break;
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default: return null;
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}
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byte[] rgb = null;
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if (ctColor.isSetSrgbClr()) {
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// Color is a regular one
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rgb = ctColor.getSrgbClr().getVal();
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} else if (ctColor.isSetSysClr()) {
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// Color is a tint of white or black
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rgb = ctColor.getSysClr().getLastClr();
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} else {
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return null;
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}
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return new XSSFColor(rgb);
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}
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/**
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* If the colour is based on a theme, then inherit
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* information (currently just colours) from it as
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* required.
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*/
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public void inheritFromThemeAsRequired(XSSFColor color) {
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if(color == null) {
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// Nothing for us to do
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return;
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}
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if(! color.getCTColor().isSetTheme()) {
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// No theme set, nothing to do
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return;
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}
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// Get the theme colour
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XSSFColor themeColor = getThemeColor(color.getTheme());
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// Set the raw colour, not the adjusted one
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// Do a raw set, no adjusting at the XSSFColor layer either
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color.getCTColor().setRgb(themeColor.getCTColor().getRgb());
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// All done
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}
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/**
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* Write this table out as XML.
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*
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* @param out The stream to write to.
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* @throws IOException if an error occurs while writing.
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*/
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public void writeTo(OutputStream out) throws IOException {
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XmlOptions options = new XmlOptions(DEFAULT_XML_OPTIONS);
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theme.save(out, options);
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}
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@Override
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protected void commit() throws IOException {
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PackagePart part = getPackagePart();
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OutputStream out = part.getOutputStream();
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writeTo(out);
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out.close();
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}
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}
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