ImageChangeEvent.java
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/*
* ESO Archive
*
* $Id: ImageChangeEvent.java,v 1.2 2009/02/20 23:10:11 abrighto Exp $
*
* who when what
* -------------- ---------- ----------------------------------------
* Allan Brighton 1999/11/17 Created
*/
package jsky.image;
import javax.swing.event.ChangeEvent;
/**
* Used to describe image change events such as loading a new image,
* setting a new origin or scale.
*
* @version $Revision: 1.2 $
* @author Allan Brighton
*/
public class ImageChangeEvent extends ChangeEvent {
/** Bitmask for boolean values */
protected int val;
/** Bit set if a new image was (or will be) loaded */
protected static final int NEW_IMAGE = 1;
/** Bit set before a new image is loaded and cleared afterwards */
protected static final int BEFORE = 1 << 1;
/** Bit set if a new scale value was set */
protected static final int NEW_SCALE = 1 << 2;
/** Bit set if a new rotation angle value was set */
protected static final int NEW_ANGLE = 1 << 3;
/** Bit set if the origin changed */
protected static final int NEW_ORIGIN = 1 << 4;
/** Bit set if a new colormap was set */
protected static final int NEW_COLORMAP = 1 << 5;
/** Bit set if new cut levels were set */
protected static final int NEW_CUT_LEVELS = 1 << 6;
/** Bit set if the image file was edited (such as adding or deleting a FITS table) */
protected static final int EDIT_STATE_CHANGED = 1 << 7;
/** Bit set if the image data was modified so that the image display should be updated */
protected static final int IMAGE_DATA_CHANGED = 1 << 8;
/**
* Create a new image change event.
*
* @param source the source (sending) object.
*/
public ImageChangeEvent(Object source) {
super(source);
}
/**
* Return true if a new image was (or will be) loaded.
* If isBefore() returns true, it is before loading the image,
* otherwise after.
*/
public boolean isNewImage() {
return (val & NEW_IMAGE) != 0;
}
/**
* Used with isNewImage(), returns true if a new image will be loaded,
* and false if it was already loaded.
*/
public boolean isBefore() {
return (val & BEFORE) != 0;
}
/** Return true if the image scale (magnification) was changed */
public boolean isNewScale() {
return (val & NEW_SCALE) != 0;
}
/** Return true if the image rotation angle was changed */
public boolean isNewAngle() {
return (val & NEW_ANGLE) != 0;
}
/** Return true if the visible image origin changed (by panning) */
public boolean isNewOrigin() {
return (val & NEW_ORIGIN) != 0;
}
/** Return true if the image colormap changed */
public boolean isNewColormap() {
return (val & NEW_COLORMAP) != 0;
}
/** Return true if the image cut levels changed */
public boolean isNewCutLevels() {
return (val & NEW_CUT_LEVELS) != 0;
}
/** Return true if the edited state of the image file changed */
public boolean isEditStateChanged() {
return (val & EDIT_STATE_CHANGED) != 0;
}
/** Return true if the image data was changed */
public boolean isImageDataChanged() {
return (val & IMAGE_DATA_CHANGED) != 0;
}
public void setNewImage(boolean b) {
if (b) val |= NEW_IMAGE; else val &= ~NEW_IMAGE;
}
public void setBefore(boolean b) {
if (b) val |= BEFORE; else val &= ~BEFORE;
}
public void setNewScale(boolean b) {
if (b) val |= NEW_SCALE; else val &= ~NEW_SCALE;
}
public void setNewAngle(boolean b) {
if (b) val |= NEW_ANGLE; else val &= ~NEW_ANGLE;
}
public void setNewOrigin(boolean b) {
if (b) val |= NEW_ORIGIN; else val &= ~NEW_ORIGIN;
}
public void setNewColormap(boolean b) {
if (b) val |= NEW_COLORMAP; else val &= ~NEW_COLORMAP;
}
public void setNewCutLevels(boolean b) {
if (b) val |= NEW_CUT_LEVELS; else val &= ~NEW_CUT_LEVELS;
}
public void setEditStateChanged(boolean b) {
if (b) val |= EDIT_STATE_CHANGED; else val &= ~EDIT_STATE_CHANGED;
}
public void setImageDataChanged(boolean b) {
if (b) val |= IMAGE_DATA_CHANGED; else val &= ~IMAGE_DATA_CHANGED;
}
/** Reset all fields to the default values */
public void reset() {
val = 0;
}
}