Package org.apache.sis.portrayal

Enum TransformChangeEvent.Reason

java.lang.Object

java.lang.Enum<TransformChangeEvent.Reason>

org.apache.sis.portrayal.TransformChangeEvent.Reason

All Implemented Interfaces:

Serializable, Comparable<TransformChangeEvent.Reason>

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()

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 type with the specified name.
static TransformChangeEvent.Reason[]	values()	Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

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

Methods inherited from class java.lang.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

invalid reference

org.apache.sis.gui.map.MapCanvas

. That class provides immediate feedback to users with a temporary visual change before to perform more expansive rendering in background.

Method Details

values

public static TransformChangeEvent.Reason[] values()

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

Returns:

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

valueOf

public static TransformChangeEvent.Reason valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (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 type has no constant with the specified name

NullPointerException - if the argument is null