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JTable, JScrollPane & hor

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  JTable, JScrollPane & hor "A. W. Dunstan" <a..w..dunstan@THRWHITE.remove-dii-this> - 2011-04-27 15:40 +0000
    Re: JTable, JScrollPane & "Rich Sweeny" <rich.sweeny@THRWHITE.remove-dii-this> - 2011-04-27 15:40 +0000
      Re: JTable, JScrollPane & "A. W. Dunstan" <a..w..dunstan@THRWHITE.remove-dii-this> - 2011-04-27 15:40 +0000

#2742 — JTable, JScrollPane & hor

  To: comp.lang.java.gui
I need to display a JTable.  In this case the width of each cell in the last
column varies - it's a collection of text & color swatches, represented by
JLabels and JPanels stuffed into a containing JPanel.

I can get a vertical scroll bar to appear by putting enough entries in the
table, but no matter what the width of my columns it never puts in a
horizontal scroll bar.  Yes, I can force one by setting AUTO_RESIZE_OFF but
then I *always* get a horizontal scrollbar, even when I don't need one. 
Also, the table always starts out much too narrow to display the entire
line, scroll bar or not.  I'd really like to get either a scroll bar, or
for the table to resize wide enough to show the longest line.

The least-worst solution I've found so far is to force a scroll bar and add
a ComponentListener to listen for changes in the size of the JComponent
containing the JScrollPane, and resize the width of the last column
accordingly.

Is there a better way of doing horizontal scroll bars in a JTable?


-- 
Al Dunstan, Software Engineer
OptiMetrics, Inc.
3115 Professional Drive
Ann Arbor, MI  48104-5131

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#2745 — Re: JTable, JScrollPane &

  To: comp.lang.java.gui
A. W. Dunstan wrote:
> I need to display a JTable.  In this case the width of each cell in the last
> column varies - it's a collection of text & color swatches, represented by
> JLabels and JPanels stuffed into a containing JPanel.
> 
> I can get a vertical scroll bar to appear by putting enough entries in the
> table, but no matter what the width of my columns it never puts in a
> horizontal scroll bar.  Yes, I can force one by setting AUTO_RESIZE_OFF but
> then I *always* get a horizontal scrollbar, even when I don't need one. 
> Also, the table always starts out much too narrow to display the entire
> line, scroll bar or not.  I'd really like to get either a scroll bar, or
> for the table to resize wide enough to show the longest line.
> 
> The least-worst solution I've found so far is to force a scroll bar and add
> a ComponentListener to listen for changes in the size of the JComponent
> containing the JScrollPane, and resize the width of the last column
> accordingly.
> 
> Is there a better way of doing horizontal scroll bars in a JTable?
> 
> 

There are 3 constants:
	HORIZONTAL_SCROLLBAR_NEVER
	HORIZONTAL_SCROLLBAR_AS_NEEDED
	HORIZONTAL_SCROLLBAR_ALWAYS
	or
	VERTICAL_SCROLLBAR_NEVER
	VERTICAL_SCROLLBAR_AS_NEEDED
	VERTICAL_SCROLLBAR_ALWAYS

Example: This will always give you a vertical and never a horizontal:

JScrollPane scroll = new JScrollPane(table,
	JScrollPane.VERTICAL_SCROLLBAR_ALWAYS,
	JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);

Rich

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#2751 — Re: JTable, JScrollPane &

  To: comp.lang.java.gui
Rich Sweeny wrote:

> A. W. Dunstan wrote:
>> I need to display a JTable.  In this case the width of each cell in the
>> last column varies - it's a collection of text & color swatches,
>> represented by JLabels and JPanels stuffed into a containing JPanel.
>> 
>> I can get a vertical scroll bar to appear by putting enough entries in
>> the table, but no matter what the width of my columns it never puts in a
>> horizontal scroll bar.  Yes, I can force one by setting AUTO_RESIZE_OFF
>> but then I *always* get a horizontal scrollbar, even when I don't need
>> one. Also, the table always starts out much too narrow to display the
>> entire
>> line, scroll bar or not.  I'd really like to get either a scroll bar, or
>> for the table to resize wide enough to show the longest line.
>> 
>> The least-worst solution I've found so far is to force a scroll bar and
>> add a ComponentListener to listen for changes in the size of the
>> JComponent containing the JScrollPane, and resize the width of the last
>> column accordingly.
>> 
>> Is there a better way of doing horizontal scroll bars in a JTable?
>> 
>> 
> 
> There are 3 constants:
> HORIZONTAL_SCROLLBAR_NEVER
> HORIZONTAL_SCROLLBAR_AS_NEEDED
> HORIZONTAL_SCROLLBAR_ALWAYS
> or
> VERTICAL_SCROLLBAR_NEVER
> VERTICAL_SCROLLBAR_AS_NEEDED
> VERTICAL_SCROLLBAR_ALWAYS
> 
> Example: This will always give you a vertical and never a horizontal:
> 
> JScrollPane scroll = new JScrollPane(table,
> JScrollPane.VERTICAL_SCROLLBAR_ALWAYS,
> JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);
> 
> Rich

The defaults for JScrollPane(Component) are *_SCROLLBAR_AS_NEEDED. -aI needed
one, but never got one.

-- 
Al Dunstan, Software Engineer
OptiMetrics, Inc.
3115 Professional Drive
Ann Arbor, MI  48104-5131

---
 * Synchronet * The Whitehouse BBS --- whitehouse.hulds.com --- check it out free usenet!
--- Synchronet 3.15a-Win32 NewsLink 1.92
Time Warp of the Future BBS - telnet://time.synchro.net:24

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