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package ij.plugin;
import java.awt.*;
import java.awt.event.*;
import java.util.*;
import ij.*;
import ij.gui.*;
import ij.process.*;
import ij.util.Tools;
import ij.measure.Calibration;
/**
* This plugin implements the Edit/Selection/Specify command.<p>
* New update, correctly handling existing oval ROIs, the case that
* "Centered" is already selected when the plugin starts, and always
* restoring the original ROI when the dialog is cancelled (JW, 2008/02/22)
*
* Enhancing the original plugin created by Jeffrey Kuhn, this one takes,
* in addition to width and height and the option to have an oval ROI from
* the original program, x & y coordinates, slice number, and the option to have
* the x & y coordinates centered or in default top left corner of ROI.
* The original creator is Jeffrey Kuhn, The University of Texas at Austin,
* jkuhn@ccwf.cc.utexas.edu
*
* @author Joachim Wesner
* @author Leica Microsystems CMS GmbH
* @author joachim.wesner@leica-microsystems.com
*
* @author Anthony Padua
* @author Duke University Medical Center, Department of Radiology
* @author padua001@mc.duke.edu
*
*/
public class SpecifyROI implements PlugIn, DialogListener {
static double xRoi, yRoi, width, height;
static boolean oval;
static boolean centered;
static boolean scaledUnits;
static Rectangle prevRoi;
static double prevPixelWidth = 1.0;
int iSlice;
boolean bAbort;
ImagePlus imp;
Vector fields, checkboxes;
int stackSize;
public void run(String arg) {
imp = IJ.getImage();
stackSize = imp!=null?imp.getStackSize():0;
Roi roi = imp.getRoi();
Calibration cal = imp.getCalibration();
if (roi!=null && roi.getBounds().equals(prevRoi) && cal.pixelWidth==prevPixelWidth)
roi = null;
if (roi!=null) {
boolean rectOrOval = roi!=null && (roi.getType()==Roi.RECTANGLE||roi.getType()==Roi.OVAL);
oval = rectOrOval && (roi.getType()==Roi.OVAL); // Handle existing oval ROI
Rectangle r = roi.getBounds();
width = r.width;
height = r.height;
xRoi = r.x;
yRoi = r.y;
if (scaledUnits && cal.scaled()) {
xRoi = xRoi*cal.pixelWidth;
yRoi = yRoi*cal.pixelHeight;
width = width*cal.pixelWidth;
height = height*cal.pixelHeight;
}
} else if (!validDialogValues()) {
width = imp.getWidth()/2;
height = imp.getHeight()/2;
xRoi = width/2;
yRoi = height/2;
}
if (centered) { // Make xRoi and yRoi consistent when centered mode is active
xRoi += width/2.0;
yRoi += height/2.0;
}
iSlice = imp.getCurrentSlice();
showDialog();
}
boolean validDialogValues() {
Calibration cal = imp.getCalibration();
double pw=cal.pixelWidth, ph=cal.pixelHeight;
if (width/pw<1.5 || height/ph<1.5)
return false;
if (xRoi/pw>=imp.getWidth() || yRoi/ph>=imp.getHeight())
return false;
return true;
}
/**
* Creates a dialog box, allowing the user to enter the requested
* width, height, x & y coordinates, slice number for a Region Of Interest,
* option for oval, and option for whether x & y coordinates to be centered.
*/
void showDialog() {
Calibration cal = imp.getCalibration();
int digits = 0;
if (scaledUnits && cal.scaled())
digits = 2;
Roi roi = imp.getRoi();
if (roi==null)
drawRoi();
GenericDialog gd = new GenericDialog("Specify");
gd.addNumericField("Width:", width, digits);
gd.addNumericField("Height:", height, digits);
gd.addNumericField("X Coordinate:", xRoi, digits);
gd.addNumericField("Y Coordinate:", yRoi, digits);
if (stackSize>1)
gd.addNumericField("Slice:", iSlice, 0);
gd.addCheckbox("Oval", oval);
gd.addCheckbox("Centered",centered);
if (cal.scaled())
gd.addCheckbox("Scaled Units ("+cal.getUnits()+")", scaledUnits);
fields = gd.getNumericFields();
gd.addDialogListener(this);
gd.showDialog();
if (gd.wasCanceled()) {
if (roi==null)
imp.killRoi();
else // *ALWAYS* restore initial ROI when cancelled
imp.setRoi(roi);
}
}
void drawRoi() {
int iX = (int)xRoi;
int iY = (int)yRoi;
if (centered) {
iX = (int)(xRoi - (width/2));
iY = (int)(yRoi - (height/2));
}
int iWidth = (int)width;
int iHeight = (int)height;
Calibration cal = imp.getCalibration();
if (scaledUnits && cal.scaled()) {
iX = (int)Math.round(iX/cal.pixelWidth);
iY = (int)Math.round(iY/cal.pixelHeight);
iWidth = (int)Math.round(width/cal.pixelWidth);
iHeight = (int)Math.round(height/cal.pixelHeight);
prevPixelWidth = cal.pixelWidth;
}
Roi roi;
if (oval)
roi = new OvalRoi(iX, iY, iWidth, iHeight, imp);
else
roi = new Roi(iX, iY, iWidth, iHeight);
imp.setRoi(roi);
prevRoi = roi.getBounds();
prevPixelWidth = cal.pixelWidth;
}
public boolean dialogItemChanged(GenericDialog gd, AWTEvent e) {
if (IJ.isMacOSX()) IJ.wait(100);
width = gd.getNextNumber();
height = gd.getNextNumber();
xRoi = gd.getNextNumber();
yRoi = gd.getNextNumber();
if (stackSize>1)
iSlice = (int) gd.getNextNumber();
oval = gd.getNextBoolean();
centered = gd.getNextBoolean();
if (imp.getCalibration().scaled())
scaledUnits = gd.getNextBoolean();
if (gd.invalidNumber())
return false;
else {
if (stackSize>1 && iSlice>0 && iSlice<=stackSize)
imp.setSlice(iSlice);
drawRoi();
return true;
}
}
}
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