Package org.openstreetmap.josm.actions

Class SetGridOriginAction

java.lang.Object

javax.swing.AbstractAction

org.openstreetmap.josm.actions.JosmAction

org.openstreetmap.josm.actions.SetGridOriginAction

All Implemented Interfaces:

java.awt.event.ActionListener, java.io.Serializable, java.lang.Cloneable, java.util.EventListener, javax.swing.Action, Destroyable

public class SetGridOriginAction
extends JosmAction

Moves the origin of the grid drawn over the map to the current selection, so that grid lines pass through it, and enables the grid. The origin is the position of the selected node, or the centroid (arithmetic mean position) of all nodes reachable from the current selection (nodes of selected ways, node members of selected relations) if more than one node is involved.

Since:

19640

See Also:

MapGridPaintable, AlignGridRotationAction, Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class org.openstreetmap.josm.actions.JosmAction

JosmAction.ActiveLayerChangeAdapter, JosmAction.LayerChangeAdapter, JosmAction.SelectionChangeAdapter

Field Summary

Fields inherited from class org.openstreetmap.josm.actions.JosmAction

sc

Fields inherited from class javax.swing.AbstractAction

changeSupport, enabled

Fields inherited from interface javax.swing.Action

ACCELERATOR_KEY, ACTION_COMMAND_KEY, DEFAULT, DISPLAYED_MNEMONIC_INDEX_KEY, LARGE_ICON_KEY, LONG_DESCRIPTION, MNEMONIC_KEY, NAME, SELECTED_KEY, SHORT_DESCRIPTION, SMALL_ICON

Constructor Summary

Constructors

Constructor	Description
SetGridOriginAction()	Constructs a new SetGridOriginAction.

Method Summary

Modifier and Type	Method	Description
void	actionPerformed(java.awt.event.ActionEvent e)
(package private) static EastNorth	getCentroid(DataSet ds)	Computes the centroid of the current selection: the (arithmetic mean) position of every node reachable from the selected primitives (the selected nodes themselves, the nodes of selected ways, and the node members of selected relations).
static void	setOrigin(EastNorth position)	Sets the grid origin (in the coordinates of the current grid type) and enables the grid.
protected void	updateEnabledState()	Override in subclasses to update the enabled state of the action when something in the JOSM state changes, i.e.
protected void	updateEnabledState(java.util.Collection<? extends OsmPrimitive> selection)	Override in subclasses to update the enabled state of the action if the collection of selected primitives changes.

Methods inherited from class org.openstreetmap.josm.actions.JosmAction

buildActiveLayerChangeAdapter, buildLayerChangeAdapter, checkAndConfirmOutlyingOperation, destroy, getLayerManager, getShortcut, initEnabledState, installAdapters, listenToLayerChange, listenToSelectionChange, setHelpId, setToolbarId, setTooltip, updateEnabledStateOnCurrentSelection, updateEnabledStateOnCurrentSelection, updateEnabledStateOnModifiableSelection, waitFuture

Methods inherited from class javax.swing.AbstractAction

addPropertyChangeListener, clone, firePropertyChange, getKeys, getPropertyChangeListeners, getValue, isEnabled, putValue, removePropertyChangeListener, setEnabled

Methods inherited from class java.lang.Object

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

Methods inherited from interface javax.swing.Action

accept

Constructor Detail

SetGridOriginAction

public SetGridOriginAction()

Constructs a new SetGridOriginAction.

Method Detail

updateEnabledState

protected void updateEnabledState()

Description copied from class: JosmAction

Override in subclasses to update the enabled state of the action when something in the JOSM state changes, i.e. when a layer is removed or added. See JosmAction.updateEnabledState(Collection) to respond to changes in the collection of selected primitives. Default behavior is empty.

Overrides:

updateEnabledState in class JosmAction

See Also:

JosmAction.updateEnabledState(Collection), JosmAction.initEnabledState(), JosmAction.listenToLayerChange()

updateEnabledState

protected void updateEnabledState(java.util.Collection<? extends OsmPrimitive> selection)

Description copied from class: JosmAction

Override in subclasses to update the enabled state of the action if the collection of selected primitives changes. This method is called with the new selection.

Overrides:

updateEnabledState in class JosmAction

Parameters:

selection - the collection of selected primitives; may be empty, but not null

See Also:

JosmAction.updateEnabledState(), JosmAction.initEnabledState(), JosmAction.listenToSelectionChange()

actionPerformed

public void actionPerformed(java.awt.event.ActionEvent e)

getCentroid

static EastNorth getCentroid(DataSet ds)

Computes the centroid of the current selection: the (arithmetic mean) position of every node reachable from the selected primitives (the selected nodes themselves, the nodes of selected ways, and the node members of selected relations). For a single selected node this is simply that node's position.

Parameters:

ds - the data set, may be null

Returns:

the centroid, or null if the selection contains no node with known coordinates

setOrigin

public static void setOrigin(EastNorth position)

Sets the grid origin (in the coordinates of the current grid type) and enables the grid.

Parameters:

position - the new grid origin, in projected coordinates