Thank you very much ! It did the job 😉

Marc,

I don’t understand why, but BusyAffordance uses the MJPanel‘s font to measure the busy text, but uses the UIManager’s Label.font to draw it.
So, you can do something like below, have not tested on the 2009 and below version.

jOldFont = javax.swing.UIManager.getFont('Label.font'); % get Label.font
jNewFont = jOldFont.deriveFont(20);                     % derive a new font with size 20
javax.swing.UIManager.put('Label.font',jNewFont)        % set Label.font to the new font

try
    % R2010a and newer
    iconsClassName = 'com.mathworks.widgets.BusyAffordance$AffordanceSize';
    iconsSizeEnums = javaMethod('values',iconsClassName);
    SIZE_32x32 = iconsSizeEnums(2);  % (1) = 16x16,  (2) = 32x32
    jObj = com.mathworks.widgets.BusyAffordance(SIZE_32x32, 'testing...');  % icon, label
catch
    % R2009b and earlier
    redColor   = java.awt.Color(1,0,0);
    blackColor = java.awt.Color(0,0,0);
    jObj = com.mathworks.widgets.BusyAffordance(redColor, blackColor);
end

jPanel = jObj.getComponent;       % get the MJPanel 
jPanel.setFont(jNewFont)          % set the panel's font to the new font

jObj.setPaintsWhenStopped(true);  % default = false
jObj.useWhiteDots(false);         % default = false (true is good for dark backgrounds)
javacomponent(jObj.getComponent, [10,10,80,80], gcf);
jObj.start;
    % do some long operation...
jObj.stop;
jObj.setBusyText('All done!');

javax.swing.UIManager.put('Label.font',jOldFont) % undo what we changed
 

I am not aware of a way to modify the text font. You might have thought that jObj.getComponent.setFont(jObj.getComponent.getFont.deriveFont(20)) would do the trick, but in fact it just shifts the text label without modifying its font.

How could we increase the size of the text below (“testing…”) ?

Thanks

@Tobias – I do not have an immediate answer. You can easily open the Jar files (for example %matlabroot%/java/jar/mlwidgets.jar) using WinZip or WinRAR and check this. If you would like me to spend time to investigate this for you, then please contact me by email for private consulting.

I’m trying to use the ProgressBarDialog in Matlab R2018a. However, it seems to be missing from the com.mathworks.mlwidgets package.

Do you know if it has been removed completely or just renamed or moved to another package?

Thank you!

@Ben – I am not aware of any way to set multi-line text in the BusyAffordance object

While BusyAffordance and ProgressBarDialog icons cannot be modified externally, but you can create your own animated icon as Malcolm noted or as explained here: http://undocumentedmatlab.com/blog/displaying-animated-gifs (or using one of the other mechanisms that I referenced in my post text above).