| /* ==================================================================== |
| 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.common.usermodel.fonts; |
| |
| import java.util.Collections; |
| import java.util.List; |
| |
| import org.apache.poi.util.Beta; |
| |
| /** |
| * A FontInfo object holds information about a font configuration. |
| * It is roughly an equivalent to the LOGFONT structure in Windows GDI.<p> |
| * |
| * If an implementation doesn't provide a property, the getter will return {@code null} - |
| * if the value is unset, a default value will be returned.<p> |
| * |
| * Setting a unsupported property results in an {@link UnsupportedOperationException}. |
| * |
| * @since POI 3.17-beta2 |
| * |
| * @see <a href="https://msdn.microsoft.com/en-us/library/dd145037.aspx">LOGFONT structure</a> |
| */ |
| @SuppressWarnings("unused") |
| public interface FontInfo { |
| |
| /** |
| * Get the index within the collection of Font objects |
| * @return unique index number of the underlying record this Font represents |
| * (probably you don't care unless you're comparing which one is which) |
| */ |
| default Integer getIndex() { |
| return null; |
| } |
| |
| /** |
| * Sets the index within the collection of Font objects |
| * |
| * @param index the index within the collection of Font objects |
| * |
| * @throws UnsupportedOperationException if unsupported |
| */ |
| default void setIndex(int index) { |
| throw new UnsupportedOperationException("FontInfo is read-only."); |
| } |
| |
| |
| /** |
| * @return the full name of the font, i.e. font family + type face |
| */ |
| String getTypeface(); |
| |
| /** |
| * Sets the font name |
| * |
| * @param typeface the full name of the font, when {@code null} removes the font definition - |
| * removal is implementation specific |
| */ |
| default void setTypeface(String typeface) { |
| throw new UnsupportedOperationException("FontInfo is read-only."); |
| } |
| |
| /** |
| * @return the font charset |
| */ |
| default FontCharset getCharset() { |
| return FontCharset.ANSI; |
| } |
| |
| /** |
| * Sets the charset |
| * |
| * @param charset the charset |
| */ |
| default void setCharset(FontCharset charset) { |
| throw new UnsupportedOperationException("FontInfo is read-only."); |
| } |
| |
| /** |
| * @return the family class |
| */ |
| default FontFamily getFamily() { |
| return FontFamily.FF_DONTCARE; |
| } |
| |
| /** |
| * Sets the font family class |
| * |
| * @param family the font family class |
| */ |
| default void setFamily(FontFamily family) { |
| throw new UnsupportedOperationException("FontInfo is read-only."); |
| } |
| |
| /** |
| * @return the font pitch or {@code null} if unsupported |
| */ |
| default FontPitch getPitch() { |
| return null; |
| } |
| |
| /** |
| * Set the font pitch |
| * |
| * @param pitch the font pitch |
| * |
| * @throws UnsupportedOperationException if unsupported |
| */ |
| default void setPitch(FontPitch pitch) { |
| throw new UnsupportedOperationException("FontInfo is read-only."); |
| } |
| |
| /** |
| * @return panose info in binary form or {@code null} if unknown |
| */ |
| default byte[] getPanose() { |
| return null; |
| } |
| |
| /** |
| * Set the panose in binary form |
| * @param panose the panose bytes |
| */ |
| default void setPanose(byte[] panose) { |
| throw new UnsupportedOperationException("FontInfo is read-only."); |
| } |
| |
| |
| /** |
| * If font facets are embedded in the document, return the list of embedded facets. |
| * The font embedding is experimental, therefore the API can change. |
| * @return the list of embedded EOT font data |
| */ |
| @Beta |
| default List<? extends FontFacet> getFacets() { |
| return Collections.emptyList(); |
| } |
| } |