Help with Custom UIControl Objects

Question

Paul 2014-3-3

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链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/120010-help-with-custom-uicontrol-objects

评论： Paul 2014-3-4

Hi, I'm hoping to make a few custom UIControl objects. The internet has pointed me towards java. I have zero experience with java but I've made a few modest gains. Hopefully someone can help me in the right direction for what comes next.

Below is example code for a custom slider. It looks different. It has labels. It executes a callback function. Great.

What's wrong?

1) Some of the labels are showing up as '...'

1.s) Setting f to 1000 will fix this. Not elegant. Anyone know how to adjust sizing?

2) I would like to be able to change coloring.

3) This is minor but the callback is being called 3 times when I select a new position. I can live with that but I'd rather not. Ideas?

These should be straightforward so I'd really appreciate non-File Exchange replies.

Paul

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

function Customslider
hFig = figure;
[j h] = javacomponent('javax.swing.JSlider');
set(h,'Parent',hFig)
temp_units = get(h,'Units');
set(h,'Units','normalized','Position',[0.1 0.1 0.1 0.8])
set(h,'Units',temp_units)
initPos = 4;
f = 10;
setMinimum(j, f );
setMaximum(j, 1.9*f );
setValue(j, f+(f/10)*(initPos-1) );
j.setMajorTickSpacing( f/10 );
j.setPaintLabels(true);
j.setPaintTicks(true);
j.setOrientation(1);
j.setSnapToTicks(1)
labels = {'0.5','6','12','30','38','51','68','87','100','130'};
lt =get(j, 'LabelTable');
for i=1:10
  key = java.lang.Integer( f+f/10*(i-1) );
  val = lt.get(key);
  val.setText(labels{i});
  lt.put(key, val);
end
set(j, 'LabelTable', lt);
set(j,'StateChangedCallback',@mycallback)
  function mycallback(src,eventdata)
      getValue(src)
  end
end

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

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Answer 1

Image Analyst 2014-3-4

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/120010-help-with-custom-uicontrol-objects#answer_126946

I don't know the answer to your question. I just wanted to say that for anything unusual, tricky, fancy, or undocumented, especially GUI bells and whistles, I look to Yair's site: http://undocumentedmatlab.com/ Maybe you could too.

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Paul 2014-3-4

Indeed that is one of the first places I browsed. Unfortunately quite a bit of the custom GUI pieces relate to using his code on the File Exchange, which means I don't actually learn what is going on. I'll have a second pass through later today and maybe I'll find something.

Thanks for reply,

Paul

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