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package ij.plugin;
import ij.*;
import ij.process.*;
import ij.gui.*;
import ij.util.Tools;
import ij.plugin.filter.PlugInFilter;
import ij.plugin.frame.Recorder;
import ij.measure.Calibration;
import java.awt.*;
import java.awt.event.*;
import java.util.Vector;
/** This plugin implements the Analyze/Histogram command. */
public class Histogram implements PlugIn, TextListener {
private static boolean staticUseImageMinAndMax = true;
private static double staticXMin, staticXMax;
private static String staticYMax = "Auto";
private static boolean staticStackHistogram;
private static int imageID;
private int nBins = 256;
private boolean useImageMinAndMax = true;
private double xMin, xMax;
private String yMax = "Auto";
private boolean stackHistogram;
private Checkbox checkbox;
private TextField minField, maxField;
private String defaultMin, defaultMax;
public void run(String arg) {
ImagePlus imp = IJ.getImage();
int bitDepth = imp.getBitDepth();
if (bitDepth==32 || IJ.altKeyDown() || (IJ.isMacro()&&Macro.getOptions()!=null)) {
IJ.setKeyUp(KeyEvent.VK_ALT);
if (!showDialog(imp))
return;
} else {
int stackSize = imp.getStackSize();
boolean noDialog = stackSize==1;
if (stackSize==3) {
ImageStack stack = imp.getStack();
String label1 = stack.getSliceLabel(1);
if ("Hue".equals(label1))
noDialog = true;
}
int flags = noDialog?0:setupDialog(imp, 0);
if (flags==PlugInFilter.DONE) return;
stackHistogram = flags==PlugInFilter.DOES_STACKS;
Calibration cal = imp.getCalibration();
if (bitDepth==16 && ImagePlus.getDefault16bitRange()!=0) {
xMin = 0.0;
xMax = Math.pow(2,ImagePlus.getDefault16bitRange())-1;
useImageMinAndMax = false;
} else if (stackHistogram && ((bitDepth==8&&!cal.calibrated())||bitDepth==24)) {
xMin = 0.0;
xMax = 256.0;
useImageMinAndMax = false;
} else
useImageMinAndMax = true;
yMax = "Auto";
}
ImageStatistics stats = null;
if (useImageMinAndMax) {
xMin = 0.0;
xMax = 0.0;
}
int iyMax = (int)Tools.parseDouble(yMax, 0.0);
boolean customHistogram = (bitDepth==8||bitDepth==24) && (!(xMin==0.0&&xMax==0.0)||nBins!=256||iyMax>0);
if (stackHistogram || customHistogram) {
ImagePlus imp2 = imp;
if (customHistogram && !stackHistogram && imp.getStackSize()>1)
imp2 = new ImagePlus("Temp", imp.getProcessor());
stats = new StackStatistics(imp2, nBins, xMin, xMax);
stats.histYMax = iyMax;
new HistogramWindow("Histogram of "+imp.getShortTitle(), imp, stats);
} else
new HistogramWindow("Histogram of "+imp.getShortTitle(), imp, nBins, xMin, xMax, iyMax);
}
boolean showDialog(ImagePlus imp) {
if (!IJ.isMacro()) {
nBins = HistogramWindow.nBins;
useImageMinAndMax = staticUseImageMinAndMax;
xMin=staticXMin; xMax=staticXMax;
yMax = staticYMax;
stackHistogram = staticStackHistogram;
}
ImageProcessor ip = imp.getProcessor();
double min = ip.getMin();
double max = ip.getMax();
if (imp.getID()!=imageID || (min==xMin&&min==xMax))
useImageMinAndMax = true;
if (imp.getID()!=imageID || useImageMinAndMax) {
xMin = min;
xMax = max;
Calibration cal = imp.getCalibration();
xMin = cal.getCValue(xMin);
xMax = cal.getCValue(xMax);
}
defaultMin = IJ.d2s(xMin,2);
defaultMax = IJ.d2s(xMax,2);
imageID = imp.getID();
int stackSize = imp.getStackSize();
GenericDialog gd = new GenericDialog("Histogram");
gd.addNumericField("Bins:", nBins, 0);
gd.addCheckbox("Use pixel value range", useImageMinAndMax);
gd.setInsets(5, 40, 10);
gd.addMessage("or use:");
int fwidth = 6;
int nwidth = Math.max(IJ.d2s(xMin,2).length(), IJ.d2s(xMax,2).length());
if (nwidth>fwidth) fwidth = nwidth;
int digits = 2;
if (xMin==(int)xMin && xMax==(int)xMax)
digits = 0;
gd.addNumericField("X_min:", xMin, digits, fwidth, null);
gd.addNumericField("X_max:", xMax, digits, fwidth, null);
gd.setInsets(15, 0, 10);
gd.addStringField("Y_max:", yMax, 6);
if (stackSize>1)
gd.addCheckbox("Stack histogram", stackHistogram);
Vector numbers = gd.getNumericFields();
if (numbers!=null) {
minField = (TextField)numbers.elementAt(1);
minField.addTextListener(this);
maxField = (TextField)numbers.elementAt(2);
maxField.addTextListener(this);
}
checkbox = (Checkbox)(gd.getCheckboxes().elementAt(0));
gd.showDialog();
if (gd.wasCanceled())
return false;
nBins = (int)gd.getNextNumber();
useImageMinAndMax = gd.getNextBoolean();
xMin = gd.getNextNumber();
xMax = gd.getNextNumber();
yMax = gd.getNextString();
stackHistogram = (stackSize>1)?gd.getNextBoolean():false;
if (!IJ.isMacro()) {
if (nBins>=2 && nBins<=1000)
HistogramWindow.nBins = nBins;
staticUseImageMinAndMax = useImageMinAndMax;
staticXMin=xMin; staticXMax=xMax;
staticYMax = yMax;
staticStackHistogram = stackHistogram;
}
IJ.register(Histogram.class);
return true;
}
public void textValueChanged(TextEvent e) {
boolean rangeChanged = !defaultMin.equals(minField.getText())
|| !defaultMax.equals(maxField.getText());
if (rangeChanged)
checkbox.setState(false);
}
int setupDialog(ImagePlus imp, int flags) {
int stackSize = imp.getStackSize();
if (stackSize>1) {
String macroOptions = Macro.getOptions();
if (macroOptions!=null) {
if (macroOptions.indexOf("stack ")>=0)
return flags+PlugInFilter.DOES_STACKS;
else
return flags;
}
YesNoCancelDialog d = new YesNoCancelDialog(IJ.getInstance(),
"Histogram", "Include all "+stackSize+" images?");
if (d.cancelPressed())
return PlugInFilter.DONE;
else if (d.yesPressed()) {
if (Recorder.record)
Recorder.recordOption("stack");
return flags+PlugInFilter.DOES_STACKS;
}
if (Recorder.record)
Recorder.recordOption("slice");
}
return flags;
}
}
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