A strange Jtextarea resize problem
Hello everybody:
I have a jTextArea without Jscrollpane ( I want to do my own scroll)
For example, the initial height of my jTextArea is 281 pixels
I divide the height by the rowheight (calculated using getFontMetrics(myfont).getHeight();)
so, 281/17 = 16.52 possible rows
When I resize the Frame of my application I recalculate the last values in order to know how many rows are possible
If I increase the height of the Frame everything is ok, but if I decrease it, the jTextarea makes some 'autoscroll' and the height of the JtextArea not change ????
Repeat, I'm not using no Jscrollpane linked with the JtextArea.
So, in this situation the last calculation gives me a wrong value ( height / rowheight).
I'm using Gridbaglayout, and I think this is the responsible of the situation
I supose that gridbaglayout says to Jtextarea ' Hey , your new height is least' and the JtextArea makes some 'autoscroll' , so Is there any way to avoid this AutoScroll ?
Thanks
I want to edit a file which has 2.000.000 rows of data.
I have developed a special way to edit it, showing only the number of lines that can be showed in the JtextArea. I only wnat to have a Horizontal scroll, but I dont want Vertical scroll ( I have my own vertical scrollbar)
When I resize the Jframe, the Jtextarea also resize.
But if it has content, when I decrease the vertical size of my frame 'somebody' moves the JtextArea, because it is as if the 'y' coordinate of the JtextArea was negative
The size of my JtextArea is the same before resize !!!???, this is the 'autoscroll' I mentioned in the original post.
Why is the reason because the increase resize works fine (the Jtextarea grows verticaly) and the decrease not ?
Thanks
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Last edited by dawid.loubser (2013-05-21 13:37:25)dawid.loubser wrote:Thanks for the suggestion drtebi - I'll give it a try.
I really like GNOME 3.x though (and would like to understand the windowing behaviour), but if the annoying quirks are insurmountable, I will happily switch.
Man I love GNOME 3.x. I admire the courage they had to change, basically, everything, and I find myself more productive with my GNOME 3 Arch box than with my good ol' Slackware KDE 4 box. I just hate those bugs - for example I filed a task in their bugtracker for this window resize problem I have with gedit. If it's a love/hate relationship, I think it's marriage ^_^
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I have a strange 3g data problem.
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SMC RESET
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I`m attempting to both crop and resize a video at the same time.
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But isn't that the size you want? If not, how did it get set that way?
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<META HTTP-EQUIV="Cache-Control" CONTENT="no-cache">
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<META HTTP-EQUIV="Cache-Control" CONTENT="must-revalidate">
<META HTTP-EQUIV="Cache-Control" CONTENT="mag-age=0">
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Hello Gurus,
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Strange audi sync problem & different, stranger video sync issu in sequence
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http://img154.imageshack.us/img154/1462/bild1.png
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public static final int N_RESIZE_BUTTON = 1;
public static final int NE_RESIZE_BUTTON = 2;
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public static final int SE_RESIZE_BUTTON = 4;
public static final int S_RESIZE_BUTTON = 5;
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public static final int W_RESIZE_BUTTON = 7;
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resize = aComponent;
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setBounds();
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this.addMouseListener( this );
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return buttonType;
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break;
case 1:
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break;
case 2:
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case 3:
getParent().setCursor( new Cursor( Cursor.E_RESIZE_CURSOR ) );
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case 4:
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case 5:
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case 6:
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case 7:
getParent().setCursor( new Cursor( Cursor.W_RESIZE_CURSOR ) );
public void mouseExited( MouseEvent e )
if( enabled )
getParent().setCursor( new Cursor( Cursor.DEFAULT_CURSOR ) );
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public void mousePressed( MouseEvent e )
public void mouseReleased( MouseEvent e )
public void mouseMoved( MouseEvent e )
public void mouseDragged( MouseEvent e )
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int clickedY = e.getY();
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height = ( resize.getY() + resize.getHeight() - this.getY() - clickedY > 1 ? resize.getY() - this.getY() - clickedY + resize.getHeight() : 1 );
resize.setBounds( resize.getX() + resize.getWidth() - this.getX() - clickedX > 1 ? this.getX() + clickedX : resize.getX() + resize.getWidth() - 1,
resize.getY() + resize.getHeight() - this.getY() - clickedY > 1 ? this.getY() + clickedY : resize.getY() + resize.getHeight() - 1,
width,
height );
break;
case N_RESIZE_BUTTON:
height = resize.getY() + resize.getHeight() - this.getY() - clickedY > 1 ? resize.getY() - this.getY() - clickedY + resize.getHeight() : 1;
resize.setBounds( resize.getX(),
resize.getY() + resize.getHeight() - this.getY() - clickedY > 1 ? this.getY() + clickedY : resize.getY() + resize.getHeight() - 1,
resize.getWidth(),
height );
break;
case NE_RESIZE_BUTTON:
width = this.getX() + clickedX - resize.getX() > 1 ? this.getX() + clickedX - resize.getX() : 1;
height = resize.getY() + resize.getHeight() - this.getY() - clickedY > 1 ? resize.getY() - this.getY() - clickedY + resize.getHeight() : 1;
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width,
height );
break;
case E_RESIZE_BUTTON:
width = this.getX() + clickedX - resize.getX() > 1 ? this.getX() + clickedX - resize.getX() : 1;
resize.setBounds( resize.getX(),
resize.getY(),
width,
resize.getHeight() );
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width = this.getX() + clickedX - resize.getX() > 1 ? this.getX() + clickedX - resize.getX() : 1;
height = this.getY() + clickedY - resize.getY() > 1 ? this.getY() + clickedY - resize.getY() : 1;
resize.setBounds( resize.getX(),
resize.getY(),
width,
height );
break;
case S_RESIZE_BUTTON:
height = this.getY() + clickedY - resize.getY() > 1 ? this.getY() + clickedY - resize.getY() : 1;
resize.setBounds( resize.getX(),
resize.getY(),
resize.getWidth(),
height );
break;
case SW_RESIZE_BUTTON:
width = resize.getX() + resize.getWidth() - this.getX() - clickedX > 1 ? resize.getX() - this.getX() - clickedX + resize.getWidth() : 1;
height = this.getY() + clickedY - resize.getY() > 1 ? this.getY() + clickedY - resize.getY() : 1;
resize.setBounds( resize.getX() + resize.getWidth() - this.getX() - clickedX > 1 ? this.getX() + clickedX : resize.getX() + resize.getWidth() - 1,
resize.getY(),
width,
height );
break;
case W_RESIZE_BUTTON:
width = resize.getX() + resize.getWidth() - this.getX() - clickedX > 1 ? resize.getX() - this.getX() - clickedX + resize.getWidth() : 1;
resize.setBounds( resize.getX() + resize.getWidth() - this.getX() - clickedX > 1 ? this.getX() + clickedX : resize.getX() + resize.getWidth() - 1,
resize.getY(),
width,
resize.getHeight() );
public void setBounds()
switch( buttonType )
case NW_RESIZE_BUTTON:
this.setBounds( resize.getX() - 5,
resize.getY() - 5,
5,
5 );
break;
case N_RESIZE_BUTTON:
this.setBounds( (int)( ( resize.getWidth() + 2 * resize.getX() ) / 2 ) - 2,
resize.getY() - 5,
5,
5 );
break;
case NE_RESIZE_BUTTON:
this.setBounds( resize.getWidth() + resize.getX(),
resize.getY() - 5,
5,
5 );
break;
case E_RESIZE_BUTTON:
this.setBounds( resize.getWidth() + resize.getX(),
(int)( ( resize.getHeight() + 2 * resize.getY() ) / 2 ) - 2,
5,
5 );
break;
case SE_RESIZE_BUTTON:
this.setBounds( resize.getWidth() + resize.getX(),
resize.getHeight() + resize.getY(),
5,
5 );
break;
case S_RESIZE_BUTTON:
this.setBounds( (int)( ( resize.getWidth() + 2 * resize.getX() ) / 2 ) - 2,
resize.getHeight() + resize.getY(),
5,
5 );
break;
case SW_RESIZE_BUTTON:
this.setBounds( resize.getX() - 5,
resize.getHeight() + resize.getY(),
5,
5 );
break;
case W_RESIZE_BUTTON:
this.setBounds( resize.getX() - 5,
(int)( ( resize.getHeight() + 2 * resize.getY() ) / 2 ) - 2,
5,
5 );
public void componentHidden(ComponentEvent e)
public void componentMoved(ComponentEvent e)
public void componentResized(ComponentEvent e)
this.setBounds();
public void componentShown(ComponentEvent e)
public void setEnabled( boolean enable )
enabled = enable;
public boolean isEnabled()
return enabled;
public void paint( Graphics g )
( (Graphics2D)g ).fillRect( 0, 0, 5, 5 );
}Hi bbritta,
Thanks for the time. I guess the setLocation MIGHT be off, tho ideally, it should place the tv somewhere near the right bottom corner of the screen.
The basic requirement I have is in the code written. This is what I want. When I start my application, I want the small tv screen only to appear, with the two colored panels (that shall obviously contain some other code). When my mouse hovers on this small screen, the buttons should appear in a panel just below the small screen. So I have used a JLayered pane that displays two separate gifs, one for the small screen, and one for the buttons panel. On the small screen gif, I have added two panels to layer 1, and on the button panel gif, I have added 3 buttons.
What is happening is that if I set the frame size to the size of the small screen at startup (before show()), then on mouse hover, the frame size increases, but the layered pane size stays the same, and hence i cannot see the button panel. But if I start out with the button panel showing (frame size initially set to the larger value), then on mouse exit, the button panel disappears, and reappears properly on mouse enter. But I don't want to set the original size to the larger value, since only the small screen must be seen first.
Did I make my self clear? The whole problem is that on mouse hover, u cannot see the button panel, till u change the setSize() code in initializeFrame() to use c_o_FULL_TV_SIZE instead of c_o_TV_SIZE. That u cannot see the buttons IS my problem!
Thanks,
Shefali. -
Strange freezing/display problem
Hi,
I've recently started having some strange problems with my 24" iMac 2.16GHz.
What happens is the screen freezes, not just the application I'm working in, but the entire screen. If I move the mouse it looks like the screen tries to redraw itself so I might get a browser window half-duplicated and then other windows look like they leave a trail if you try to move them. I can't click on anything, I can move the mouse for about 10 seconds, then I get the coloured beachball and I have to restart from the back.
A couple of times when I've restarted there has been a high pitched tone before the start-up chime.
I can't say exactly what I was doing when the crashes happened but a couple of times I've been looking at videos on YouTube. It may be related, I'm not 100% sure though.
I can't really explain it any better than that, sorry it's not as clear as it might be. I can't take a screenshot or anything when it happens.
I've run Disk Utility from the OS CD to repair the disk and it didn't find any problems. I haven't installed any new hardware or anything like that.
If anyone had any idea what I might try to find out what's going on I'd really appreciate it.
Thanks.Sorry to bump this but this issue is still ongoing with me.
I'm nearly positive it is caused by watching videos on YouTube, Googlevideo etc. It just happened again while on YouTube. Screenshot - http://img220.imageshack.us/img220/342/screeniu8.jpg
After about 20 seconds I can click around and the screen goes back to normal when I move the windows. It's almost like using the eraser tool in Photoshop or something, you can 'wipe out' the bits that are not where they're supposed to be.
Yesterday I reinstalled the OS, I did an erase and install as well. Does this mean my graphics card is the problem?
Any advice on this would be a great help because I've got a huge amount of work at the moment and this is proving really disruptive (and before you say it I was taking a break when watching that YouTube thing!).
thanks -
I have the following problem:
I am creating a JFrame with a JTextArea in it.
After all components are added to the JFrame
I call:
setLocation(100, 100);
pack();
setVisible(true);
Then a method is called that generates files and uses
jTextArea.append(".");
to add a "." to the JTextArea for each created file
to show the progress.
Now the problem is that the dots are not shown one after the other.
The window pops up AFTER all the dots are written and not when
setVisible(true);
is called.
What do I have to do that every single dot is shown in the
JTextArea right after it is appended ?Move your actual file generating process to a different thread. The best way to do it is using SwingWorker. There is a tutorial on the Sun's web site at http://java.sun.com/docs/books/tutorial/uiswing/misc/threads.html that demonstrates how to use SwingWorker.
Hope this helps
Sai Pullabhotla
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