How to get back red waitbar?

Question

Thomas 2014-11-12

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https://ww2.mathworks.cn/matlabcentral/answers/162397-how-to-get-back-red-waitbar

评论： Dev-iL 2015-7-8

In 2014b the waitbar appearance changed from the cool red to an ugly green windows-style one (btw in help documentation it still says "A wait bar is a figure that displays what percentage of a calculation is complete as the calculation proceeds by progressively filling a bar with red from left to right." ).

How can i revert it back to red?

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Answer 1

Robert Cumming 2014-11-12

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I played around with the java this afternoon and got this to work:

hBar = waitbar ( 0, 'Please Wait....' );
% now use java to get to the progress bar
jFrame = get ( hBar, 'JavaFrame' ); % this will throw a warning
jFigPanel = jFrame.getFigurePanelContainer;
jContainer = jFigPanel.getComponent(0);
jPanel = jContainer.getComponent(0);
%
jProgressContainer = jPanel.getComponent(0);
% get the progress bar
jProgressBar = jProgressContainer.getComponent(0);
% update the progressbar details
jProgressBar.setBackground ( java.awt.Color.RED );
jProgressBar.setString(''); % set the text to be empty
jProgressBar.setStringPainted(true);
% example of progress bar being updated:
for ii=0:0.02:1
  waitbar(ii,hBar)
  pause(0.1)
end

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Robert Cumming 2014-11-13

Don't think so. If it's such a problem make your own or use one from the file exchange.

You could put the above code in your own version, or make it a sub function.

Dev-iL 2015-7-8

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Nice trick! FYI, the following line has no effect:

jProgressBar.setBackground ( java.awt.Color.RED );

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Answer 2

Michael Haderlein 2014-11-12

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I'm working with 2014a, but if they didn't change the entire waitbar, you should be able to modify the color this way:

h = waitbar(0,'Please wait...');
hc=get(get(h,'children'),'children');
steps = 1000;
for step = 1:steps
    pause(0.001)
    waitbar(step / steps)
set(hc(2),'facecolor',rand(1,3))
end
close(h)