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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.

If an implementation doesn't provide a property, the getter will return null - if the value is unset, a default value will be returned.

Setting a unsupported property results in an UnsupportedOperationException.

See Also:
Since:POI 3.17-beta2
/** * 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
Returns:unique index number of the underlying record this Font represents (probably you don't care unless you're comparing which one is which)
/** * 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
Params:
  • index – the index within the collection of Font objects
Throws:
/** * 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."); }
Returns:the full name of the font, i.e. font family + type face
/** * @return the full name of the font, i.e. font family + type face */
String getTypeface();
Sets the font name
Params:
  • typeface – the full name of the font, when null removes the font definition - removal is implementation specific
/** * 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."); }
Returns:the font charset
/** * @return the font charset */
default FontCharset getCharset() { return FontCharset.ANSI; }
Sets the charset
Params:
  • charset – the charset
/** * Sets the charset * * @param charset the charset */
default void setCharset(FontCharset charset) { throw new UnsupportedOperationException("FontInfo is read-only."); }
Returns:the family class
/** * @return the family class */
default FontFamily getFamily() { return FontFamily.FF_DONTCARE; }
Sets the font family class
Params:
  • family – the font family class
/** * Sets the font family class * * @param family the font family class */
default void setFamily(FontFamily family) { throw new UnsupportedOperationException("FontInfo is read-only."); }
Returns:the font pitch or null if unsupported
/** * @return the font pitch or {@code null} if unsupported */
default FontPitch getPitch() { return null; }
Set the font pitch
Params:
  • pitch – the font pitch
Throws:
/** * 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."); }
Returns:panose info in binary form or null if unknown
/** * @return panose info in binary form or {@code null} if unknown */
default byte[] getPanose() { return null; }
Set the panose in binary form
Params:
  • panose – the panose bytes
/** * 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.
Returns:the list of embedded EOT font data
/** * 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(); } }