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package ij.plugin;
import ij.*;
import ij.process.*;
import ij.gui.*;
import java.awt.*;
/** Implements the conversion commands in the Image/Type submenu. */
public class Converter implements PlugIn {
/** obsolete */
public static boolean newWindowCreated;
private ImagePlus imp;
public void run(String arg) {
imp = WindowManager.getCurrentImage();
if (imp!=null) {
if (imp.isComposite() && arg.equals("RGB Color"))
(new RGBStackConverter()).run("");
else if (imp.lock()) {
convert(arg);
imp.unlock();
}
} else
IJ.noImage();
}
/** Converts the ImagePlus to the specified image type. The string
argument corresponds to one of the labels in the Image/Type submenu
("8-bit", "16-bit", "32-bit", "8-bit Color", "RGB Color", "RGB Stack" or "HSB Stack"). */
public void convert(String item) {
int type = imp.getType();
ImageStack stack = null;
if (imp.getStackSize()>1)
stack = imp.getStack();
String msg = "Converting to " + item;
IJ.showStatus(msg + "...");
long start = System.currentTimeMillis();
Roi roi = imp.getRoi();
imp.killRoi();
boolean saveChanges = imp.changes;
imp.changes = IJ.getApplet()==null; //if not applet, set 'changes' flag
ImageWindow win = imp.getWindow();
try {
if (stack!=null) {
boolean wasVirtual = stack.isVirtual();
// do stack conversions
if (stack.isRGB() && item.equals("RGB Color")) {
new ImageConverter(imp).convertRGBStackToRGB();
if (win!=null) new ImageWindow(imp, imp.getCanvas()); // replace StackWindow with ImageWindow
} else if (stack.isHSB() && item.equals("RGB Color")) {
new ImageConverter(imp).convertHSBToRGB();
if (win!=null) new ImageWindow(imp, imp.getCanvas());
} else if (item.equals("8-bit"))
new StackConverter(imp).convertToGray8();
else if (item.equals("16-bit"))
new StackConverter(imp).convertToGray16();
else if (item.equals("32-bit"))
new StackConverter(imp).convertToGray32();
else if (item.equals("RGB Color"))
new StackConverter(imp).convertToRGB();
else if (item.equals("RGB Stack"))
new StackConverter(imp).convertToRGBHyperstack();
else if (item.equals("HSB Stack"))
new StackConverter(imp).convertToHSBHyperstack();
else if (item.equals("8-bit Color")) {
int nColors = getNumber();
if (nColors!=0)
new StackConverter(imp).convertToIndexedColor(nColors);
} else throw new IllegalArgumentException();
if (wasVirtual) imp.setTitle(imp.getTitle());
} else {
// do single image conversions
Undo.setup(Undo.TYPE_CONVERSION, imp);
ImageConverter ic = new ImageConverter(imp);
if (item.equals("8-bit"))
ic.convertToGray8();
else if (item.equals("16-bit"))
ic.convertToGray16();
else if (item.equals("32-bit"))
ic.convertToGray32();
else if (item.equals("RGB Stack")) {
Undo.reset(); // Reversible; no need for Undo
ic.convertToRGBStack();
} else if (item.equals("HSB Stack")) {
Undo.reset();
ic.convertToHSB();
} else if (item.equals("RGB Color")) {
ic.convertToRGB();
} else if (item.equals("8-bit Color")) {
int nColors = getNumber();
start = System.currentTimeMillis();
if (nColors!=0)
ic.convertRGBtoIndexedColor(nColors);
} else {
imp.changes = saveChanges;
return;
}
IJ.showProgress(1.0);
}
}
catch (IllegalArgumentException e) {
unsupportedConversion(imp);
IJ.showStatus("");
Undo.reset();
imp.changes = saveChanges;
Menus.updateMenus();
Macro.abort();
return;
}
if (roi!=null)
imp.setRoi(roi);
IJ.showTime(imp, start, "");
imp.repaintWindow();
Menus.updateMenus();
}
void unsupportedConversion(ImagePlus imp) {
IJ.error("Converter",
"Supported Conversions:\n" +
" \n" +
"8-bit -> 16-bit*\n" +
"8-bit -> 32-bit*\n" +
"8-bit -> RGB Color*\n" +
"16-bit -> 8-bit*\n" +
"16-bit -> 32-bit*\n" +
"16-bit -> RGB Color*\n" +
"32-bit -> 8-bit*\n" +
"32-bit -> 16-bit\n" +
"32-bit -> RGB Color*\n" +
"8-bit Color -> 8-bit (grayscale)*\n" +
"8-bit Color -> RGB Color\n" +
"RGB Color -> 8-bit (grayscale)*\n" +
"RGB Color -> 8-bit Color*\n" +
"RGB Color -> RGB Stack*\n" +
"RGB Color -> HSB Stack*\n" +
"RGB Stack -> RGB Color\n" +
"HSB Stack -> RGB Color\n" +
" \n" +
"* works with stacks\n"
);
}
int getNumber() {
if (imp.getType()!=ImagePlus.COLOR_RGB)
return 256;
GenericDialog gd = new GenericDialog("MedianCut");
gd.addNumericField("Number of Colors (2-256):", 256, 0);
gd.showDialog();
if (gd.wasCanceled())
return 0;
int n = (int)gd.getNextNumber();
if (n<2) n = 2;
if (n>256) n = 256;
return n;
}
}
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