void setRoiModState(MouseEvent e, Roi roi, int handle) {
   if (roi == null || (handle >= 0 && roi.modState == Roi.NO_MODS)) return;
   if (roi.state == Roi.CONSTRUCTING) return;
   int tool = Toolbar.getToolId();
   if (tool > Toolbar.FREEROI && tool != Toolbar.WAND && tool != Toolbar.POINT) {
     roi.modState = Roi.NO_MODS;
     return;
   }
   if (e.isShiftDown()) roi.modState = Roi.ADD_TO_ROI;
   else if (e.isAltDown()) roi.modState = Roi.SUBTRACT_FROM_ROI;
   else roi.modState = Roi.NO_MODS;
   // IJ.log("setRoiModState: "+roi.modState+" "+ roi.state);
 }
  public void mousePressed(MouseEvent e) {
    // if (ij==null) return;
    showCursorStatus = true;
    int toolID = Toolbar.getToolId();
    ImageWindow win = imp.getWindow();
    if (win != null && win.running2 && toolID != Toolbar.MAGNIFIER) {
      if (win instanceof StackWindow) ((StackWindow) win).setAnimate(false);
      else win.running2 = false;
      return;
    }

    int x = e.getX();
    int y = e.getY();
    flags = e.getModifiers();
    // IJ.log("Mouse pressed: " + e.isPopupTrigger() + "  " + ij.modifiers(flags));
    // if (toolID!=Toolbar.MAGNIFIER && e.isPopupTrigger()) {
    if (toolID != Toolbar.MAGNIFIER
        && (e.isPopupTrigger() || (!IJ.isMacintosh() && (flags & Event.META_MASK) != 0))) {
      handlePopupMenu(e);
      return;
    }

    int ox = offScreenX(x);
    int oy = offScreenY(y);
    xMouse = ox;
    yMouse = oy;
    if (IJ.spaceBarDown()) {
      // temporarily switch to "hand" tool of space bar down
      setupScroll(ox, oy);
      return;
    }
    if (showAllROIs) {
      Roi roi = imp.getRoi();
      if (!(roi != null && (roi.contains(ox, oy) || roi.isHandle(x, y) >= 0))
          && roiManagerSelect(x, y)) return;
    }
    if (customRoi && overlay != null) return;

    switch (toolID) {
      case Toolbar.MAGNIFIER:
        if (IJ.shiftKeyDown()) zoomToSelection(ox, oy);
        else if ((flags & (Event.ALT_MASK | Event.META_MASK | Event.CTRL_MASK)) != 0) {
          // IJ.run("Out");
          zoomOut(x, y);
          if (getMagnification() < 1.0) imp.repaintWindow();
        } else {
          // IJ.run("In");
          zoomIn(x, y);
          if (getMagnification() <= 1.0) imp.repaintWindow();
        }
        break;
      case Toolbar.HAND:
        setupScroll(ox, oy);
        break;
      case Toolbar.DROPPER:
        setDrawingColor(ox, oy, IJ.altKeyDown());
        break;
      case Toolbar.WAND:
        Roi roi = imp.getRoi();
        if (roi != null && roi.contains(ox, oy)) {
          Rectangle r = roi.getBounds();
          if (r.width == imageWidth && r.height == imageHeight) imp.killRoi();
          else if (!e.isAltDown()) {
            handleRoiMouseDown(e);
            return;
          }
        }
        if (roi != null) {
          int handle = roi.isHandle(x, y);
          if (handle >= 0) {
            roi.mouseDownInHandle(handle, x, y);
            return;
          }
        }
        setRoiModState(e, roi, -1);
        String mode = WandToolOptions.getMode();
        double tolerance = WandToolOptions.getTolerance();
        int npoints = IJ.doWand(ox, oy, tolerance, mode);
        if (Recorder.record && npoints > 0) {
          if (tolerance == 0.0 && mode.equals("Legacy")) Recorder.record("doWand", ox, oy);
          else
            Recorder.recordString(
                "doWand(" + ox + ", " + oy + ", " + tolerance + ", \"" + mode + "\");\n");
        }
        break;
      case Toolbar.OVAL:
        if (Toolbar.getBrushSize() > 0) new RoiBrush();
        else handleRoiMouseDown(e);
        break;
      case Toolbar.SPARE1:
      case Toolbar.SPARE2:
      case Toolbar.SPARE3:
      case Toolbar.SPARE4:
      case Toolbar.SPARE5:
      case Toolbar.SPARE6:
      case Toolbar.SPARE7:
      case Toolbar.SPARE8:
      case Toolbar.SPARE9:
        Toolbar.getInstance().runMacroTool(toolID);
        break;
      default: // selection tool
        handleRoiMouseDown(e);
    }
  }