Package org.apache.fop.render.txt

Class Helper

java.lang.Object
org.apache.fop.render.txt.Helper
public final class Helper extends Object
This class has a few convenient static methods for number quantization.

  • Method Summary

    Modifier and Type
    Method
    Description
    static int
    ceil(int x, int quantum)
    Returns minimal possible integer, greater or equal than x, divisible by quantum.
    static int
    ceilPosition(int x, int y)
    Returns the smallest integer that is greater than or equal to the x/y fraction.
    static int
    floor(int x, int quantum)
    Returns maximum possible integer, less or equal than oldValue, divisible by quantum.
    static int
    floorPosition(int x, int y)
    Returns the largest integer that is less than or equal to the argument and is equal to x/y fraction.
    static int
    round(int x, int quantum)
    Returns nearest integer to x, divisible by quantum.
    static int
    roundPosition(int x, int y)
    Returns the closest integer to x/y fraction.

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Method Details

    • round

      public static int round(int x, int quantum)
      Returns nearest integer to x, divisible by quantum.
      Parameters:
      x - integer for quantization
      quantum - integer, representing quantization
      Returns:
      computed nearest integer

    • ceil

      public static int ceil(int x, int quantum)
      Returns minimal possible integer, greater or equal than x, divisible by quantum.
      Parameters:
      x - integer for quantization
      quantum - integer, representing quantization
      Returns:
      computed nearest integer

    • floor

      public static int floor(int x, int quantum)
      Returns maximum possible integer, less or equal than oldValue, divisible by quantum.
      Parameters:
      x - integer for quantization
      quantum - integer, representing quantization
      Returns:
      computed nearest integer

    • roundPosition

      public static int roundPosition(int x, int y)
      Returns the closest integer to x/y fraction. It's possible to consider this methos as a analog of Math.round(x/y), without having deal with non-integer.
      Parameters:
      x - integer, fraction numerator
      y - integer, fraction denominator
      Returns:
      the value of the fraction rounded to the nearest
      See Also:

    • ceilPosition

      public static int ceilPosition(int x, int y)
      Returns the smallest integer that is greater than or equal to the x/y fraction. It's possible to consider this function as a analog of Math.ceil(x/y), without having deal with non-integer.
      Parameters:
      x - integer, fraction numerator
      y - integer, fraction denominator
      Returns:
      the smallest integer that is greater than or equal to x/y fraction
      See Also:

    • floorPosition

      public static int floorPosition(int x, int y)
      Returns the largest integer that is less than or equal to the argument and is equal to x/y fraction. It's possible to consider this function as a analog of Math.floor(x/y), without having deal with non-integer.
      Parameters:
      x - integer, fraction numerator
      y - integer, fraction denominator
      Returns:
      the largest integer that is less than or equal to the argument and is equal to x/y fraction
      See Also: