Class ConstantSize

java.lang.Object
com.jgoodies.forms.layout.ConstantSize
All Implemented Interfaces:
Size, Serializable
public final class ConstantSize extends Object implements Size, Serializable
An implementation of the Size interface that represents constant sizes described by a value and unit, for example: 10 pixel, 15 point or 4 dialog units. You can get instances of ConstantSize using the factory methods and constants in the Sizes class. Logical constant sizes that vary with the current layout style are delivered by the LayoutStyle class.

This class supports different size units:

Unit   Abbreviation   Size
Millimetermm0.1 cm
Centimetercm10.0 mm
Inchin25.4 mm
DTP Pointpt1/72 in
Pixelpx1/(resolution in dpi) in
Dialog Unitdluhonors l&f, resolution, and dialog font size

Examples:

Sizes.ZERO;
Sizes.DLUX9;
Sizes.dluX(42);
Sizes.pixel(99);
Version:
$Revision: 1.18 $
Author:
Karsten Lentzsch
See Also:

  • Field Details

  • Constructor Details

    • ConstantSize

      public ConstantSize(int value, ConstantSize.Unit unit)
      Constructs a ConstantSize for the given size and unit.
      Parameters:
      value - the size value interpreted in the given units
      unit - the size's unit
      Since:
      1.1

    • ConstantSize

      public ConstantSize(double value, ConstantSize.Unit unit)
      Constructs a ConstantSize for the given size and unit.
      Parameters:
      value - the size value interpreted in the given units
      unit - the size's unit
      Since:
      1.1

  • Method Details

    • getValue

      public double getValue()
      Returns this size's value.
      Returns:
      the size value
      Since:
      1.1

    • getUnit

      public ConstantSize.Unit getUnit()
      Returns this size's unit.
      Returns:
      the size unit
      Since:
      1.1

    • getPixelSize

      public int getPixelSize(Component component)
      Converts the size if necessary and returns the value in pixels.
      Parameters:
      component - the associated component
      Returns:
      the size in pixels

    • maximumSize

      public int maximumSize(Container container, List components, FormLayout.Measure minMeasure, FormLayout.Measure prefMeasure, FormLayout.Measure defaultMeasure)
      Returns this size as pixel size. Neither requires the component list nor the specified measures.

      Invoked by FormSpec to determine the size of a column or row.

      Specified by:
      maximumSize in interface Size
      Parameters:
      container - the layout container
      components - the list of components used to compute the size
      minMeasure - the measure that determines the minimum sizes
      prefMeasure - the measure that determines the preferred sizes
      defaultMeasure - the measure that determines the default sizes
      Returns:
      the computed maximum size in pixel

    • compressible

      public boolean compressible()
      Describes if this Size can be compressed, if container space gets scarce. Used by the FormLayout size computations in #compressedSizes to check whether a column or row can be compressed or not.

      ConstantSizes are incompressible.

      Specified by:
      compressible in interface Size
      Returns:
      false
      Since:
      1.1

    • equals

      public boolean equals(Object o)
      Indicates whether some other ConstantSize is "equal to" this one.
      Overrides:
      equals in class Object
      Parameters:
      o - the Object with which to compare
      Returns:
      true if this object is the same as the obj argument; false otherwise.
      See Also:

    • hashCode

      public int hashCode()
      Returns a hash code value for the object. This method is supported for the benefit of hashtables such as those provided by java.util.Hashtable.
      Overrides:
      hashCode in class Object
      Returns:
      a hash code value for this object.
      See Also:

    • toString

      public String toString()
      Returns a string representation of this size object. Note: This string representation may change at any time. It is intended for debugging purposes. For parsing, use encode() instead.
      Overrides:
      toString in class Object
      Returns:
      a string representation of the constant size

    • encode

      public String encode()
      Returns a parseable string representation of this constant size.
      Specified by:
      encode in interface Size
      Returns:
      a String that can be parsed by the Forms parser
      Since:
      1.2