How to add an image with overlaid text using System Object method getIconImpl(obj)?

Is it possible (or will it be in the future) to use the getIconImpl(obj) method in a system object classdef to place both an image and text on the simulink block icon?

It's possible to place an image:

icon = matlab.system.display.Icon('myicon.jpg');

It's possible to place text:

icon = 'My System';

However, I can't seem to place an image with overlaid text. Something similar to...

icon = {matlab.system.display.Icon('myicon.jpg'), ...
    'My system'};

or something like...

icon = ['image(''logo1.png'');' ...
    'disp(''My system'');'];

I know it is possible to use the mask editor to achieve the above functionality. However, I have been able to style the block mask and implement the controls all within the system object classdef file thus far. This is the only limiting action i have come across.

Answer 1

[dpb]

As you're aware, there's no indication of support the syntax you propose of more than one argument to matlab.system.display.Icon. In fact, the doc doesn't even imply the syntax

icon = 'My System';

wouldn't expect icon to be the name of a icon file, not a string to display; it indicates the argument type can be either a string or character vector variable, but doesn't imply there's a different behavior between passing the argument as the two different data types. That seems to be enhanced or unexpected behavior.

help matlab.system.display.Icon

 matlab.system.display.Icon - Specify custom image as icon for MATLAB System block
    Use the matlab.system.display.Icon class inside the getIconImpl method
    to specify a custom image to use as the icon for a MATLAB System
    (Simulink) block.

    Creation
      Syntax
        icon = matlab.system.display.Icon(img)

      Input Arguments
        img - Image for block icon
          string | character vector

    Examples
      web /MATLAB/help/matlab/ref/matlab.system.display.icon-class.html#bvom7l3

    See also getIconImpl, matlab.system.mixin.CustomIcon

    Introduced in MATLAB in R2017a
    Documentation for matlab.system.display.Icon
       doc matlab.system.display.Icon

I would suggest if you have a solid justification/use case, this could be submitted to Mathworks as an official enhancement request at <Product Support Page>

[Austin]

Thank you for the feedback! I will write up a use case and submit it to mathworks. Seems like a reasonable request.