public void update() {
CompositeImage ci = getImage();
if (ci == null || checkbox == null) return;
int n = checkbox.length;
int nChannels = ci.getNChannels();
if (nChannels != n && nChannels <= CompositeImage.MAX_CHANNELS) {
instance = null;
location = getLocation();
close();
new Channels();
return;
}
boolean[] active = ci.getActiveChannels();
for (int i = 0; i < checkbox.length; i++) checkbox[i].setState(active[i]);
int index = 0;
switch (ci.getMode()) {
case IJ.COMPOSITE:
index = 0;
break;
case IJ.COLOR:
index = 1;
break;
case IJ.GRAYSCALE:
index = 2;
break;
}
choice.select(index);
}
public Channels() {
super("Channels");
if (instance != null) {
instance.toFront();
return;
}
WindowManager.addWindow(this);
instance = this;
GridBagLayout gridbag = new GridBagLayout();
GridBagConstraints c = new GridBagConstraints();
setLayout(gridbag);
int y = 0;
c.gridx = 0;
c.gridy = y++;
c.gridwidth = 1;
c.fill = GridBagConstraints.BOTH;
c.anchor = GridBagConstraints.CENTER;
int margin = 32;
if (IJ.isMacOSX()) margin = 20;
c.insets = new Insets(10, margin, 10, margin);
choice = new Choice();
for (int i = 0; i < modes.length; i++) choice.addItem(modes[i]);
choice.select(0);
choice.addItemListener(this);
add(choice, c);
CompositeImage ci = getImage();
int nCheckBoxes = ci != null ? ci.getNChannels() : 3;
if (nCheckBoxes > CompositeImage.MAX_CHANNELS) nCheckBoxes = CompositeImage.MAX_CHANNELS;
checkbox = new Checkbox[nCheckBoxes];
for (int i = 0; i < nCheckBoxes; i++) {
checkbox[i] = new Checkbox("Channel " + (i + 1), true);
c.insets = new Insets(0, 25, i < nCheckBoxes - 1 ? 0 : 10, 5);
c.gridy = y++;
add(checkbox[i], c);
checkbox[i].addItemListener(this);
}
c.insets = new Insets(0, 15, 10, 15);
c.fill = GridBagConstraints.NONE;
c.gridy = y++;
moreButton = new Button(moreLabel);
moreButton.addActionListener(this);
add(moreButton, c);
update();
pm = new PopupMenu();
for (int i = 0; i < menuItems.length; i++) addPopupItem(menuItems[i]);
add(pm);
addKeyListener(IJ.getInstance()); // ImageJ handles keyboard shortcuts
setResizable(false);
pack();
if (location == null) {
GUI.center(this);
location = getLocation();
} else setLocation(location);
show();
}
public void itemStateChanged(ItemEvent e) {
ImagePlus imp = WindowManager.getCurrentImage();
if (imp == null) return;
if (!imp.isComposite()) {
int channels = imp.getNChannels();
if (channels == 1 && imp.getStackSize() <= 4) channels = imp.getStackSize();
if (imp.getBitDepth() == 24 || (channels > 1 && channels < CompositeImage.MAX_CHANNELS)) {
GenericDialog gd = new GenericDialog(imp.getTitle());
gd.addMessage("Convert to multi-channel composite image?");
gd.showDialog();
if (gd.wasCanceled()) return;
else IJ.doCommand("Make Composite");
} else {
IJ.error(
"Channels",
"A composite image is required (e.g., "
+ moreLabel
+ " Open HeLa Cells),\nor create one using "
+ moreLabel
+ " Make Composite.");
return;
}
}
if (!imp.isComposite()) return;
CompositeImage ci = (CompositeImage) imp;
Object source = e.getSource();
if (source == choice) {
int index = ((Choice) source).getSelectedIndex();
switch (index) {
case 0:
ci.setMode(IJ.COMPOSITE);
break;
case 1:
ci.setMode(IJ.COLOR);
break;
case 2:
ci.setMode(IJ.GRAYSCALE);
break;
}
ci.updateAndDraw();
if (Recorder.record) {
String mode = null;
switch (index) {
case 0:
mode = "composite";
break;
case 1:
mode = "color";
break;
case 2:
mode = "grayscale";
break;
}
Recorder.record("Stack.setDisplayMode", mode);
}
} else if (source instanceof Checkbox) {
for (int i = 0; i < checkbox.length; i++) {
Checkbox cb = (Checkbox) source;
if (cb == checkbox[i]) {
if (ci.getMode() == IJ.COMPOSITE) {
boolean[] active = ci.getActiveChannels();
active[i] = cb.getState();
if (Recorder.record) {
String str = "";
for (int c = 0; c < ci.getNChannels(); c++) str += active[c] ? "1" : "0";
Recorder.record("Stack.setActiveChannels", str);
Recorder.record("//Stack.toggleChannel", imp.getChannel());
}
} else {
imp.setPosition(i + 1, imp.getSlice(), imp.getFrame());
if (Recorder.record) Recorder.record("Stack.setChannel", i + 1);
}
ci.updateAndDraw();
return;
}
}
}
}
