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Canvas: How to scroll client area [message #449531]

Tue, 25 January 2005 20:58

Christian Hauser

Messages: 189
Registered: July 2009

Senior Member

Hi,

I have a Canvas that is scrollable and contains several Text controls.
If you jump from one Text control to the next using TAB, you somewhen
come to a Text control that is not visible (out of the client area).

How can I programmatically scroll the client area of the Canvas so that
the currently selected Text control is visible?

Any help is highly appreciated.

Christian

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Re: Canvas: How to scroll client area [message #449533 is a reply to message #449531]

Tue, 25 January 2005 21:28

Eclipse User

Originally posted by: shake.web.de

Christian Hauser wrote:
> Hi,
>
> I have a Canvas that is scrollable and contains several Text controls.
> If you jump from one Text control to the next using TAB, you somewhen
> come to a Text control that is not visible (out of the client area).
>
> How can I programmatically scroll the client area of the Canvas so that
> the currently selected Text control is visible?

Maybe this will help you:

http://dev.eclipse.org/viewcvs/index.cgi/org.eclipse.swt.sni ppets/src/org/eclipse/swt/snippets/Snippet9.java?rev=HEAD&am p;content-type=text/vnd.viewcvs-markup

Johannes Schneider

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Re: Canvas: How to scroll client area [message #449538 is a reply to message #449533]

Tue, 25 January 2005 23:34

Christian Hauser

Messages: 189
Registered: July 2009

Senior Member

>> How can I programmatically scroll the client area of the Canvas so
>> that the currently selected Text control is visible?
>
> Maybe this will help you:
> http://dev.eclipse.org/viewcvs/index.cgi/org.eclipse.swt.sni ppets/src/org/eclipse/swt/snippets/Snippet9.java?rev=HEAD&am p;content-type=text/vnd.viewcvs-markup

This doesn't really help me just as it is. What I would like to have is
a setClientArea method on Canvas. But only getClientArea() exists. So I
need to get hold of the horizontal and vertical bars and call their
setSelection methods?

Still confused,
Christian

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Re: Canvas: How to scroll client area [message #449562 is a reply to message #449538]

Wed, 26 January 2005 15:12

Christian Hauser

Messages: 189
Registered: July 2009

Senior Member

>> Maybe this will help you:
>> http://dev.eclipse.org/viewcvs/index.cgi/org.eclipse.swt.sni ppets/src/org/eclipse/swt/snippets/Snippet9.java?rev=HEAD&am p;content-type=text/vnd.viewcvs-markup
>
> This doesn't really help me just as it is. What I would like to have is
> a setClientArea method on Canvas. But only getClientArea() exists.

I got it working, but it would have been nice to have a
scrollRectToVisible(Rectangle) method or something similar that does all
this calculating and scrolling for me.

Thanks anyway.
Christian

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Re: Canvas: How to scroll client area [message #449563 is a reply to message #449562]

Wed, 26 January 2005 15:40

Veronika Irvine

Messages: 1272
Registered: July 2009

Senior Member

> I got it working, but it would have been nice to have a
> scrollRectToVisible(Rectangle) method or something similar that does all
> this calculating and scrolling for me.

Enter a bug report against platform SWT and provide some code showing how
you implemented it

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