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<b>Warning</b>:  session_start(): open(/var/lib/php/sessions/sess_bf77nrten8fag3a0rpmrnfa83a, O_RDWR) failed: No space left on device (28) in <b>/var/www/tb-usercake/models/config.php</b> on line <b>51</b><br />
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<b>Warning</b>:  session_start(): Failed to read session data: files (path: /var/lib/php/sessions) in <b>/var/www/tb-usercake/models/config.php</b> on line <b>51</b><br />
sclass ImageSurfaceWithXMarkers extends ImageSurface {
  new L<Float> markers;
  
  *(BufferedImage img, Collection<Float> _markers) {
    super(img);
    addAll(this.markers, _markers);
    overlay = voidfunc(Graphics2D g) {
      g.setColor(Color.red);
      for (float x : markers) {
        Pt p = pointToComponentCoordinates(x, 0);
        g.drawLine(p.x, 0, p.x, getHeight()-1);
      }
    };
    disableImageSurfaceSelector(this);
    imageSurfaceOnMouseDrag(this, new VF1<Pt> {
      Float marker;
      
      void get(Pt p) {
        if (p == null) ret with marker = null;
        Pt pComponent = pointToComponentCoordinates(p.x, p.y);
        if (marker != null && pointFarOutsideOfComponent(ImageSurfaceWithXMarkers.this, pComponent)) {
          markers.remove(marker);
          ret with marker = null;
        }
        if (marker == null)
          marker = floatCloseTo(markers, p.x, 2/zoomX);
        Float m = marker;
        marker = (float) p.x;
        if (m == null)
          markers.add(marker);
        else
          replaceElement(markers, m, marker);
        repaint();
      }
    });
  }
}