You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: render_call_boxes.m
    path of file: ./repos/DeepSqueak/Functions
    
    the code of the file until where you have to start completion: function handles = render_call_boxes(current_axes,handles,roi, fill_heigth)
%% This function draws rectangles in the focus view and page view

axis_xlim = get(current_axes,'Xlim');
axis_ylim = get(current_axes,'Ylim');

    
function handles = render_call_boxes(current_axes,handles,roi, fill_heigth)
%% This function draws rectangles in the focus view and page view

axis_xlim = get(current_axes,'Xlim');
axis_ylim = get(current_axes,'Ylim');


% Find calls within the current window
calls_in_page = find( (handles.data.calls.Box(:,1) >= axis_xlim(1) & handles.data.calls.Box(:,1) < axis_xlim(2)  ) ...
    | ( handles.data.calls.Box(:,1) + handles.data.calls.Box(:,3)  >= axis_xlim(1) & handles.data.calls.Box(:,1) + handles.data.calls.Box(:,3)  <= axis_xlim(2) )...
    | ( handles.data.calls.Box(:,1)<=  axis_xlim(1) & handles.data.calls.Box(:,1) + handles.data.calls.Box(:,3) >=  axis_xlim(2) )...
    );

boxes = handles.data.calls.Box(calls_in_page,:);

% Draw labels if there are any labels other than 'USV'
% if ~isempty(calls_in_page) any(handles.data.calls.Type ~= 'USV')
    LabelVisible = 'on'; % use 'hover' to only display labels on mouse over2
% else
%     LabelVisible = 'off';
% end