Hi,
I want to be able to use the Kate::View::word(int, int ) function, but it
always returns an empty string. Further, as the default implementation in the
Kate::View interface just returns an empty string, and there don't seem to be
any reimplementations of the function - is the function actually implemented
somewhere?
Thanks,
David Saxton
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KWrite-Devel (AT) kde (DOT) org

Monday 19 December 2005 21:18, Christoph Cullmann wrote:
Monday 19 December 2005 21:54, David Saxton wrote:
Hi,

I want to be able to use the Kate::View::word(int, int ) function, but it
always returns an empty string. Further, as the default implementation in
the Kate::View interface just returns an empty string, and there don't
seem to be any reimplementations of the function - is the function
actually implemented somewhere?

Not really, the Kate::View interfaces are removed for KDE 4, I won't try to
rely on them.

KDE 4 isn't out for a few years thoughIs it possible at all to find
out the word under the mouse cursor, even in a really hacky way?

KWrite-Devel mailing list
KWrite-Devel (AT) kde (DOT) org

Monday 19 December 2005 21:53, Christoph Cullmann wrote:
Monday 19 December 2005 22:33, David Saxton wrote:
Monday 19 December 2005 21:18, Christoph Cullmann wrote:
Monday 19 December 2005 21:54, David Saxton wrote:
Hi,

I want to be able to use the Kate::View::word(int, int ) function,
but it always returns an empty string. Further, as the default
implementation in the Kate::View interface just returns an empty
string, and there don't seem to be any reimplementations of the
function - is the function actually implemented somewhere?

Not really, the Kate::View interfaces are removed for KDE 4, I won't
try to rely on them.

KDE 4 isn't out for a few years thoughIs it possible at all to
find out the word under the mouse cursor, even in a really hacky way?

Not sure if it's possible for "outsiders" using the public API, the
texthint interface was aimed for this, is it working in KDE 3.5?

I can't get it to work.

I sent an email to this mailing list asking about the texthint interface a
week ago, but I didn't receive any reply:

Forwarded Message

Subject: Want to get word under mouse on mouse move
Date: Monday 12 December 2005 17:30
From: David Saxton <david (AT) bluehaze (DOT) org>
To: kwrite-devel (AT) kde (DOT) org

I am using the kate part. I want to be able to find out when the user moves
the mouse over a text area (and the word under the mouse).

First I tried installing an event filter in Kate::View. But that didn't work
as KateViewInternal is gobbling up mouse move events. Then I noticed a
KateView::enableTextHints, which looks like what I am looking for. But the
KateView class interface is not public, so I cannot access it.

So now I am stuck. Any suggestions? :)

David Saxton

KWrite-Devel mailing list
KWrite-Devel (AT) kde (DOT) org

Monday 19 December 2005 21:59, Christoph Cullmann wrote:
Monday 19 December 2005 22:57, David Saxton wrote:
I can't get it to work.

I sent an email to this mailing list asking about the texthint
interface a week ago, but I didn't receive any reply:

I guess I should know if it work, but I fail to memorize ;)
rodda (AT) kde (DOT) org should know more, as he implemented it.
Sorry to be not that helpful, but have atm a real lack of sparetime due to
my diploma thesis :/

It looks like the text hint interface has been all nicely coded, etc, but
someone forgot to expose the "enableTextHints" function to the public API
(instead, it's just in the private KateView class). at least I can't find
out how to enable text hints.

KWrite-Devel mailing list
KWrite-Devel (AT) kde (DOT) org

Monday 19 December 2005 23:11, David Saxton wrote:
Monday 19 December 2005 21:59, Christoph Cullmann wrote:
Monday 19 December 2005 22:57, David Saxton wrote:
I can't get it to work.

I sent an email to this mailing list asking about the texthint
interface a week ago, but I didn't receive any reply:

I guess I should know if it work, but I fail to memorize ;)
rodda (AT) kde (DOT) org should know more, as he implemented it.
Sorry to be not that helpful, but have atm a real lack of sparetime due
to my diploma thesis :/

It looks like the text hint interface has been all nicely coded, etc, but
someone forgot to expose the "enableTextHints" function to the public API
(instead, it's just in the private KateView class). at least I can't
find out how to enable text hints.

The Kate Part implements *
There is also a texthintinterface: texthintinterface.h in which you can find
something like enableTextHints.

The KateView class in kdelibs/kate/part/kateview.h class is derived from the
TextHintInterface.
So you can cast a Kate::View into a KTextEditor::TextHintInterface and call
whatever is defined in this interface file.

Hope this helps, greetings,
Dominik

KWrite-Devel mailing list
KWrite-Devel (AT) kde (DOT) org

Tuesday 20 December 2005 10:11, Dominik Haumann wrote:
The Kate Part implements *
There is also a texthintinterface: texthintinterface.h in which you can
find something like enableTextHints.

The KateView class in kdelibs/kate/part/kateview.h class is derived from
the TextHintInterface.
So you can cast a Kate::View into a KTextEditor::TextHintInterface and call
whatever is defined in this interface file.

Hope this helps, greetings,
Dominik

Yup, seems to be working :) - not too sure how I missed the TextHintInterface
interface.

Still though, it won't actually display any tool tips - despite what the
function description claims (unless I'm missing something again). Instead,
all it does is prints debug info:

emit m_view->needTextHint(c.line(), c.col(), tmp);
if (!tmp.isEmpty()) kdDebug(13030)<<"Hint text: "<<tmp<<endl;
}

Which means that I have to implement the tooltip myself. This is ok (I can at
least intercept events to hide the tooltip, etc) but I don't have access to
useful internal data such as the line positions (so that the tooltip can be
displayed just below the current line), for example.

KWrite-Devel mailing list
KWrite-Devel (AT) kde (DOT) org

Tuesday 20 December 2005 23:32, David Saxton wrote:
Tuesday 20 December 2005 10:11, Dominik Haumann wrote:
The Kate Part implements *
There is also a texthintinterface: texthintinterface.h in which you can
find something like enableTextHints.

The KateView class in kdelibs/kate/part/kateview.h class is derived
from the TextHintInterface.
So you can cast a Kate::View into a KTextEditor::TextHintInterface and
call whatever is defined in this interface file.

Hope this helps, greetings,
Dominik

Yup, seems to be working :) - not too sure how I missed the
TextHintInterface interface.

Still though, it won't actually display any tool tips - despite what the
function description claims (unless I'm missing something again).
Instead, all it does is prints debug info:

emit m_view->needTextHint(c.line(), c.col(), tmp);
if (!tmp.isEmpty()) kdDebug(13030)<<"Hint text: "<<tmp<<endl;
}

Which means that I have to implement the tooltip myself. This is ok (I
can at least intercept events to hide the tooltip, etc) but I don't have
access to useful internal data such as the line positions (so that the
tooltip can be displayed just below the current line), for example.

The TextHintInterface works like this iirc:
1. You enable the hints with enableTextHints, you have done this already I
guess.

2. You connect the signal needTextHint to a slot, example:
connect( (KTextEditor::TextHintInterface*) my_view, // better: dynamic_cast
SIGNAL( needTextHint(int, int, QString&),
this, SLT( passTextHint(int, int, QString&) );
Note: You actually *never* call the signal yourself.

3. You implement passTextHint(int l, int c, QString& fill_me).
This slot is called whenever the mouse position hovers over a certain text
position without moving. The Kate Part registers this and then asks for a
string *from you* (by emitting the signal needTextHint!). You have the line
and column, so get the word at the position, do some stuff and pass the
return value back by using the reference fill_me.

I should add that I didn't test this, but I can't think of another ways how
it is supposed to work.

Greetings :)
Dominik

KWrite-Devel mailing list
KWrite-Devel (AT) kde (DOT) org

Tuesday 20 December 2005 08:59, Christoph Cullmann wrote:
Monday 19 December 2005 22:57, David Saxton wrote:
I can't get it to work.

I sent an email to this mailing list asking about the texthint
interface a week ago, but I didn't receive any reply:

I guess I should know if it work, but I fail to memorize ;)
rodda (AT) kde (DOT) org should know more, as he implemented it.

No, I only tried to implement the internals. I didn't design the interface (I
think jowenn did) - it has some flaws as previously discussed on this list.

As far as I know the texthint interface is not enabled in katepart currently.
For 4.x I expect this to change (with an improved interface) but for 3.x I
can't see it getting done (I prefer use what time I have to focus on 4,
perhaps the person who designed it can have a go) sorry.

>I am using the kate part. I want to be able to find out when the user moves
>the mouse over a text area (and the word under the mouse).
>
>First I tried installing an event filter in Kate::View. But that didn't work
>as KateViewInternal is gobbling up mouse move events. Then I noticed a
>KateView::enableTextHints, which looks like what I am looking for. But the
>KateView class interface is not public, so I cannot access it.

You can get KateViewInternal by iterating children of KTextEditor::View and
checking the classname. However it is quite a bit more difficult (read:
impossible to do properly using public api) to get the corresponding line,col
pair.

>So now I am stuck. Any suggestions? :)

1) you could have a go at implementing the texthint interface in katepart if
that's what you need
2) you could wait for kde 4 (i know, long way away, can't be helped)
3) you could design a new interface and implement that

Cheers,
Hamish.

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KWrite-Devel (AT) kde (DOT) org

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