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Re: Aligned elements in a JComboBox

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On 17.05.2011 18:49, Knute Johnson wrote:
> On 05/17/2011 09:42 AM, Thomas Richter wrote:
>> Hi folks,
>>
>> the problem at hand is how to align individual components that are part
>> of a JComboBox.
>>
>> The JComboBox uses a custom Renderer to render its contents, and each
>> content consists of two strings of variable size, arranged in a JPanel.
>> The getListCellRendererComponent() of the renderer now returns the
>> JPanel containing the two components.
>>
>> So far, so good. This works.
>>
>> The problem is that the sizes of the two components differ througout the
>> items of the JComboBox, which means that the elements within the JList
>> in the JCombobox (or rather, its JList rendering the non-editable items)
>> are not aligned to each other. Of course they can't, they are individual
>> JPanels each with its own layout manager, and thus do not know anything
>> on each other.
>>
>> Needless to say, this looks visually very unattractive.
>>
>> So what can I do about this? I have a JComboBox with a very complex
>> layout and the requirement that each entry necessarily is a pair of data
>> types of various sizes. How can I make the elements be aware of each
>> other and have a common layout for all of them?
>>
>> Illustration:
>>
>> +----------------------------------------------+
>> | foofoo | barbarbarbarbarbarbarbar |
>> +----------------------------------------------+
>> | foofoofoofoofoofoofoo | bar |
>> +----------------------------------------------+
>>
>> This is how the JComboBox currently renders. But I want it
>> laid out such that the separator between the two elements forming one
>> entry of it are underneath each other.
>>
>> Any ideas?
>>
>> Greetings,
>> Thomas
>
> Figure out the largest size of your data in each field and lay out all
> the elements with the same width and layout manager.

Which layout manager accepts fixed widths for its components? If I use a 
GridBagLayout, for example, changing the dimension of the components 
within changes their alignment, and thus they'll move around even though 
the layout manager stays the same.

Greetings,
	Thomas

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Aligned elements in a JComboBox Thomas Richter <thor@math.tu-berlin.de> - 2011-05-17 18:42 +0200
  Re: Aligned elements in a JComboBox Knute Johnson <nospam@knutejohnson.com> - 2011-05-17 09:49 -0700
    Re: Aligned elements in a JComboBox Thomas Richter <thor@math.tu-berlin.de> - 2011-05-17 21:41 +0200
      Re: Aligned elements in a JComboBox Knute Johnson <nospam@knutejohnson.com> - 2011-05-17 18:00 -0700
        Re: Aligned elements in a JComboBox Bent C Dalager <bcd@pvv.ntnu.no> - 2011-05-18 09:13 +0000
          Re: Aligned elements in a JComboBox "John B. Matthews" <nospam@nospam.invalid> - 2011-05-18 07:56 -0400
  Re: Aligned elements in a JComboBox Roedy Green <see_website@mindprod.com.invalid> - 2011-05-19 10:29 -0700

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