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allow users supply a SheetUtil failover function

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git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1923467 13f79535-47bb-0310-9956-ffa450edef68
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PJ Fanning 2025-01-30 22:29:43 +00:00
parent 0f560377be
commit 79e5e6ae16
1 changed files with 19 additions and 1 deletions
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20
poi/src/main/java/org/apache/poi/ss/util/SheetUtil.java
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@ -26,7 +26,6 @@ import java.text.AttributedString;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.function.BiFunction;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.CellStyle;
@ -369,6 +368,16 @@ public class SheetUtil {
}
}
/**
* A function with 5 inputs and a return value.
* @param <A> the type of the first input to the function
* @param <B> the type of the second input to the function
* @param <C> the type of the third input to the function
* @param <D> the type of the fourth input to the function
* @param <E> the type of the fifth input to the function
* @param <R> the return type of the function
* @since POI 5.4.1
*/
@FunctionalInterface
public interface Function5Arity<A, B, C, D, E, R> {
R apply(A a, B b, C c, D d, E e);
@ -380,6 +389,15 @@ public class SheetUtil {
private static Function5Arity<Float, Integer, CellStyle, Double, AttributedString, Float> FAILOVER_FUNCTION =
DEFAULT_FAILOVER_FUNCTION;
/**
* Define a function to be used as a failover when the font system is not available.
* This function will be called with the default character width, the colspan, the cell style,
* the minimum width and the attributed string of the cell.
* <p>
* The default function will return the default character width.
* </p>
* @since POI 5.4.1
*/
public static void setFailoverFunction(Function5Arity<Float, Integer, CellStyle, Double, AttributedString, Float> failoverFunction) {
FAILOVER_FUNCTION = failoverFunction == null ? DEFAULT_FAILOVER_FUNCTION : failoverFunction;
}