jview
Class AbstractTransferProxy

java.lang.Object
  util.PropertyContainer
      jview.AbstractTransferProxy

All Implemented Interfaces:

Cloneable, ViewportTransferring, Initializable, PropertyBearing

Direct Known Subclasses:

TransferX

public abstract class AbstractTransferProxy
extends PropertyContainer
implements ViewportTransferring

An abstract transfer proxy acts as the base class for a superior instance that keeps track of different JViewportCanvas' and knows how to transfer incoming zoom changes. Its concrete subclasses should be rather lightweight to allow easy incorporation within other objects, like display frames.

Nested Class Summary

Nested classes/interfaces inherited from class util.PropertyContainer

PropertyContainer.URLResource

Field Summary

private JViewportCanvas

attached This is the viewport that should be served.

Fields inherited from class util.PropertyContainer

KEY_LISTSEPARATOR, KEY_LOCALECOUNTRY, KEY_LOCALELANGUAGE, KEY_MAPKEYVALUECHAR, KEY_MAPSEPARATOR, KEY_NOINITONCREATE, KEY_RESOURCEBUNDLES

Fields inherited from interface util.PropertyBearing

CONFIG, KEY_CLASS, KEY_URLRESOURCES, KEY_URLUSECONFIG, KEY_URLUSECURRENT, KEY_URLUSEHOME

Constructor Summary

protected

AbstractTransferProxy(JViewportCanvas link) The only allowed construction is via the concrete canvas.

Method Summary

protected abstract Rectangle2D	getAttachedView(Object src, Rectangle2D view, JViewportCanvas on) This method calculates the zoom factor that should be applied on the attached viewport.
protected static VectorG	getBottomRight(UserCoordinates src, Rectangle2D norm) Returns the bottom-right corner in user space of a normalized rectangle using the provided UserCoordinates.
protected static VectorG	getUpLeft(UserCoordinates src, Rectangle2D norm) Returns the upper-left corner in user space of a normalized rectangle using the provided UserCoordinates.
boolean	transferViewport(Object from, Rectangle2D view) This method forks to getAttachedView(java.lang.Object, java.awt.geom.Rectangle2D, jview.JViewportCanvas) using my attached viewport as the argument.

Methods inherited from class util.PropertyContainer

augment, augment, augment, clone, createFrom, createFrom, createFrom, defaultBoolean, defaultChar, defaultDouble, defaultFloat, defaultInt, defaultLong, defaultObject, defaultObject, defaultProperties, defaultProperty, getAsBoolean, getAsChar, getAsDouble, getAsEnums, getAsFloat, getAsInt, getAsList, getAsLong, getAsMap, getAsMap, getAsObject, getAsObject, getLocalClassLoader, getLocalized, getLocalized, getLocalizedString, getLocalizedString, getProperties, getPropertiesToKey, getPropertiesToKey, getProperty, getResource, getResourceAsStream, getResourceFromKey, getResources, has, init, isNew, keyCreate, keyCreate, parseObject, reload, reload, removeProperty, rescanned, setObject, setProperties, setProperty, stringProperties, toString

Methods inherited from class java.lang.Object

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

Field Detail

attached

private JViewportCanvas attached

This is the viewport that should be served.

Constructor Detail

AbstractTransferProxy

protected AbstractTransferProxy(JViewportCanvas link)

The only allowed construction is via the concrete canvas.

Method Detail

getAttachedView

protected abstract Rectangle2D getAttachedView(Object src,
                                               Rectangle2D view,
                                               JViewportCanvas on)

This method calculates the zoom factor that should be applied on the attached viewport.

transferViewport

public boolean transferViewport(Object from,
                                Rectangle2D view)

This method forks to getAttachedView(java.lang.Object, java.awt.geom.Rectangle2D, jview.JViewportCanvas) using my attached viewport as the argument. If a non-null rectangle is returned, the attached viewport is zoomed accordingly. We return true if we can zoom and our attached canvas returns true, otherwise we return false.

Specified by:

transferViewport in interface ViewportTransferring

getUpLeft

protected static VectorG getUpLeft(UserCoordinates src,
                                   Rectangle2D norm)

Returns the upper-left corner in user space of a normalized rectangle using the provided UserCoordinates.

getBottomRight

protected static VectorG getBottomRight(UserCoordinates src,
                                        Rectangle2D norm)

Returns the bottom-right corner in user space of a normalized rectangle using the provided UserCoordinates.