image overlay transparency adjustment tool

overlay_transparency_tool.ijm

macro "Adjust Overlay Transparency Tool - C00cT0f20A" {
   getCursorLoc(x, y, z, flags);
   px=x;
   while (flags&16>0) {
     getCursorLoc(x, y, z, flags);
     if (x!=px) {
       Overlay.activateSelectionAndWait(Overlay.size-1);
       run("Properties... ","opacity="+100*x/getWidth+" transparent");
       Overlay.removeSelection(Overlay.size-1);
       Overlay.addSelection;
       showStatus("Opacity: "+d2s(100*x/getWidth,0));
       px=x;
     }
   }
}

/* below code to obtain a sample image with overlay */
/*
run("Blobs (25K)");
id=getImageID;
run("Find Maxima...", "prominence=100 exclude light output=[Segmented Particles]");
run("Analyze Particles...", "clear  show=[Count Masks] exclude");
rename('mask');
run("Glasbey");
run("RGB Color");
changeValues(0xffffff, 0xffffff, 0);
selectImage(id);
run("Add Image...", "image=mask x=0 y=0 opacity=50 zero");
close("\\Others");
*/