Coordinates of points selected on igram for graph profile

When user select points for the graph on the igram, the coordinates (currently displayed in status bar as 'abs position' and 'label_pos') are wrong. E.g.: (0,0) is out of the window, there is a band on the right part of the image where we can't select points for the profiles (out of bounds in dataframe). There is a problem with the translation from cursor position (mouseMoveEvent event.x() and event.y()), to igram image pixel position (coordinates in QLabel) and to the corresponding dataframe indices.