Module org.apache.sis.portrayal

Package org.apache.sis.portrayal

Enum Class TransformChangeEvent.Reason

Object

Enum<TransformChangeEvent.Reason>

Reason

All Implemented Interfaces:

Serializable, Comparable<Transform­Change­Event.Reason>, Constable

Enclosing class:

Transform­Change­Event

public static enum TransformChangeEvent.Reason
extends Enum<TransformChangeEvent.Reason>

The reason why the "objective to display" transform changed. It may be because of canvas initialization, or an adjustment for a change of CRS without change in the viewing area, or a navigation for viewing a different area.

See Also:

• Transform­Change­Event.get­Reason()

Nested Class Summary

Nested classes/interfaces inherited from class Enum

Enum.Enum­Desc<E extends Enum<E>>

Enum Constant Summary

Enum Constants

Enum Constant	Description
ASSIGNMENT	A new value has been assigned, overwriting the previous values.
CRS_CHANGE	A new value has been automatically computed for preserving the viewing area after a change of CRS.
DISPLAY_NAVIGATION	A relative change has been applied in units of display device (typically pixel units).
GRID_GEOMETRY_CHANGE	A new value has been assigned as part of a wider set of changes.
INTERIM	A relative interim change has been applied but is not yet reflected in the "objective to display" transform.
OBJECTIVE_NAVIGATION	A relative change has been applied in units of the objective CRS (for example in metres).

Method Summary

Modifier and Type	Method	Description
static Transform­Change­Event.Reason	value­Of(String name)	Returns the enum constant of this class with the specified name.
static Transform­Change­Event.Reason[]	values()	Returns an array containing the constants of this enum class, in the order they are declared.

Methods inherited from class Enum

clone, compare­To, describe­Constable, equals, finalize, get­Declaring­Class, hash­Code, name, ordinal, to­String, value­Of

Methods inherited from class Object

get­Class, notify, notify­All, wait, wait, wait

Enum Constant Details

GRID_GEOMETRY_CHANGE

public static final TransformChangeEvent.Reason GRID_GEOMETRY_CHANGE

A new value has been assigned as part of a wider set of changes. It typically happens when the canvas is initialized.

See Also:

• Canvas.set­Grid­Geometry(Grid­Geometry)

CRS_CHANGE

public static final TransformChangeEvent.Reason CRS_CHANGE

A new value has been automatically computed for preserving the viewing area after a change of CRS. It typically happens when the user changes the map projection without moving to a different region.

See Also:

• Canvas.set­Objective­CRS(Coordinate­Reference­System, Direct­Position)

ASSIGNMENT

public static final TransformChangeEvent.Reason ASSIGNMENT

A new value has been assigned, overwriting the previous values. The objective CRS has not changed. It can be considered as a kind of navigation, moving to absolute coordinates and zoom levels.

See Also:

• Canvas.set­Objective­To­Display(Linear­Transform)

OBJECTIVE_NAVIGATION

public static final TransformChangeEvent.Reason OBJECTIVE_NAVIGATION

A relative change has been applied in units of the objective CRS (for example in metres).

See Also:

• Planar­Canvas.transform­Objective­Coordinates(Affine­Transform)

DISPLAY_NAVIGATION

public static final TransformChangeEvent.Reason DISPLAY_NAVIGATION

A relative change has been applied in units of display device (typically pixel units).

See Also:

• Planar­Canvas.transform­Display­Coordinates(Affine­Transform)

INTERIM

public static final TransformChangeEvent.Reason INTERIM

A relative interim change has been applied but is not yet reflected in the "objective to display" transform. This kind of change is not fired by Planar­Canvas but may be fired by subclasses such as Map­Canvas. That class provides immediate feedback to users with a temporary visual change before to perform more expensive rendering in background.

Method Details

values

public static TransformChangeEvent.Reason[] values()

Returns an array containing the constants of this enum class, in the order they are declared.

Returns:

an array containing the constants of this enum class, in the order they are declared

valueOf

public static TransformChangeEvent.Reason valueOf(String name)

Returns the enum constant of this class with the specified name. The string must match exactly an identifier used to declare an enum constant in this class. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

Illegal­Argument­Exception - if this enum class has no constant with the specified name

Null­Pointer­Exception - if the argument is null