ej.mwt.style.dimension

Interface Dimension

All Known Implementing Classes:

FixedDimension, NoDimension, OptimalDimension, RelativeDimension

public interface Dimension

Represents a dimension constraint for a widget.

Method Summary

Modifier and Type	Method and Description
void	computeOptimalSize(Widget widget, int availableWidth, int availableHeight, Size optimalSize) Computes the optimal size of a widget.
boolean	equals(Object obj) Indicates whether some other object is "equal to" this one.
void	getAvailableSize(Widget widget, int availableWidth, int availableHeight, Size availableSize) Gets the available size for a widget.
int	hashCode() Returns a hash code value for the object.
void	layOut(Widget widget, Rectangle bounds) Lays out a widget.

Method Detail

getAvailableSize

void getAvailableSize(Widget widget,
                      int availableWidth,
                      int availableHeight,
                      Size availableSize)

Gets the available size for a widget.

The given available size is the available width and height minus the outlines.

The given size is updated by this method to set the available size for this dimension.

Parameters:

widget - the widget.

availableWidth - the available width.

availableHeight - the available height.

availableSize - the available size.

computeOptimalSize

void computeOptimalSize(Widget widget,
                        int availableWidth,
                        int availableHeight,
                        Size optimalSize)

Computes the optimal size of a widget.

The given optimal size is the optimal size of the widget considering the available size.

The given size is updated by this method to set the optimal size for this dimension.

Parameters:

widget - the widget.

availableWidth - the available width.

availableHeight - the available height.

optimalSize - the optimal size.

layOut

void layOut(Widget widget,
            Rectangle bounds)

Lays out a widget.

The style of the widget must be set before (not null).

This dimension is applied to compute the widget bounds and align the widget in the given bounds. The given rectangle is updated with the updated bounds.

Parameters:

widget - the widget.

bounds - the bounds of the widget.

equals

boolean equals(@Nullable
               Object obj)

Description copied from class: Object

Indicates whether some other object is "equal to" this one.

The equals method implements an equivalence relation on non-null object references:

• It is reflexive: for any non-null reference value x, x.equals(x) should return true.
• It is symmetric: for any non-null reference values x and y, x.equals(y) should return true if and only if y.equals(x) returns true.
• It is transitive: for any non-null reference values x, y, and z, if x.equals(y) returns true and y.equals(z) returns true, then x.equals(z) should return true.
• It is consistent: for any non-null reference values x and y, multiple invocations of x.equals(y) consistently return true or consistently return false, provided no information used in equals comparisons on the objects is modified.
• For any non-null reference value x, x.equals(null) should return false.

The equals method for class Object implements the most discriminating possible equivalence relation on objects; that is, for any non-null reference values x and y, this method returns true if and only if x and y refer to the same object (x == y has the value true).

Note that it is generally necessary to override the hashCode method whenever this method is overridden, so as to maintain the general contract for the hashCode method, which states that equal objects must have equal hash codes.

Overrides:

equals in class Object

Parameters:

obj - the reference object with which to compare.

Returns:

true if this object is the same as the obj argument; false otherwise.

See Also:

Object.hashCode(), HashMap

hashCode

int hashCode()

Description copied from class: Object

Returns a hash code value for the object. This method is supported for the benefit of hash tables such as those provided by HashMap.

The general contract of hashCode is:

• Whenever it is invoked on the same object more than once during an execution of a Java application, the hashCode method must consistently return the same integer, provided no information used in equals comparisons on the object is modified. This integer need not remain consistent from one execution of an application to another execution of the same application.
• If two objects are equal according to the equals(Object) method, then calling the hashCode method on each of the two objects must produce the same integer result.
• It is not required that if two objects are unequal according to the Object.equals(java.lang.Object) method, then calling the hashCode method on each of the two objects must produce distinct integer results. However, the programmer should be aware that producing distinct integer results for unequal objects may improve the performance of hash tables.

As much as is reasonably practical, the hashCode method defined by class Object does return distinct integers for distinct objects. (This is typically implemented by converting the internal address of the object into an integer, but this implementation technique is not required by the Java^TM programming language.)

Overrides:

hashCode in class Object

Returns:

a hash code value for this object.

See Also:

Object.equals(java.lang.Object), System.identityHashCode(java.lang.Object)