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Text via ShowBalloon cutoff at about 128 characters


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I've set the URL for an annotation object to run a javascript method to show 

some important information about the object using Chart.ShowBalloon. The

URL looks like "javascript:myFunction(series, infoIndex)", and gets

triggered on a double click of the object. I track the associated text

details for the annotation object in a global javascript array, and key off

of the values passed to the function.

There are multiple lines - some "header" text, then a list of name/value

pair type of information. The multiple lines are being handled OK by the

balloon (I build up the string in javascript to put in real line feeds).

However, sometimes when there is a little bit longer text, it is getting cut

off after a certain point. I counted up the characters in a couple cases,

and it looks like its around 126 characters (not including new lines), after

which the text is cut off. Could this limit be increased? 126 characters

probably isn't too bad for a single line, but is rather limiting for the

total across multiple lines. Could the limit be raised to perhaps 1024

characters or more overall?

In addition, some "feature requests" that aren't quite as easy (since you'd

have to add new methods or properties), but would be nice additions:

* Make it possible to format the font used for ShowBalloon (at a minimum,

being able to control the alignment, bold/not bold and the font size)

* Support setting tooltip text per annotation object (that can deal properly

with new lines - \n or \r\n / vbNewLine)

Thanks!

-Daniel

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  • 2 weeks later...

OK, I had suggested maybe having 1024 character limit overall, but now have 

run into a case where I'd need even more than that :-( It would be even

better if there were no un-natural limit.

I've attached 2 screen shots. One thing that's interesting is that it seems

to format the size of the balloon correctly, even for lots and lots of

text - it just doesn't render all the text :-(

-Daniel

"Daniel Bowen" <dbowen@take-this-out-timertrac-and-this-too.com> wrote in

message news:f24FRQ5zEHA.1120@webserver3.softwarefx.com...

> I've set the URL for an annotation object to run a javascript method to

> show

> some important information about the object using Chart.ShowBalloon. The

> URL looks like "javascript:myFunction(series, infoIndex)", and gets

> triggered on a double click of the object. I track the associated text

> details for the annotation object in a global javascript array, and key

> off

> of the values passed to the function.

>

> There are multiple lines - some "header" text, then a list of name/value

> pair type of information. The multiple lines are being handled OK by the

> balloon (I build up the string in javascript to put in real line feeds).

> However, sometimes when there is a little bit longer text, it is getting

> cut

> off after a certain point. I counted up the characters in a couple cases,

> and it looks like its around 126 characters (not including new lines),

> after

> which the text is cut off. Could this limit be increased? 126 characters

> probably isn't too bad for a single line, but is rather limiting for the

> total across multiple lines. Could the limit be raised to perhaps 1024

> characters or more overall?

>

> In addition, some "feature requests" that aren't quite as easy (since

> you'd

> have to add new methods or properties), but would be nice additions:

> * Make it possible to format the font used for ShowBalloon (at a minimum,

> being able to control the alignment, bold/not bold and the font size)

> * Support setting tooltip text per annotation object (that can deal

> properly

> with new lines - \n or \r\n / vbNewLine)

>

>

> Thanks!

> -Daniel

>

>

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"SoftwareFX Support" <noreply@softwarefx.com> wrote in message 

news:BWMMnG72EHA.3492@webserver3.softwarefx.com...

> Instead of ShowBalloon, you need to create an annotation balloon object.

> There is no limit on this one.

I have it so when they double click on one of the "markers" on the chart (an

annotation object), I do ShowBalloon to show more details about that marker.

When they click somewhere else, or on the balloon, the balloon goes away.

If I did a balloon annotation object instead of ShowBalloon, how would I go

about making the balloon object go away in a similar manner to the

ShowBalloon method? I'd also have to reposition the balloon for each

marker, or just have a balloon for each marker that is hidden until shown

(although that's be more wasteful - there could possibly be hundreds). The

ShowBalloon method is also nice, because its a popup window that won't get

clipped by the extent of the chart child window (it will hang over the

edge).

ShowBalloon isn't even exactly what I'd like to have - what I'd really like

to have is a tooltip per annotation object, so that the user wouldn't even

have to click on the annotation object at all. I have it working so that

when the output is PNG or JPEG, I use the image map and some other

javascript magic to get a tooltip for the area of what had been the

annotation object (setting the "title" dynamically in javascript).

Another option I had thought of was positioning a floating DIV section

instead of ShowBalloon - but the problem is that the ChartFX chart is a

windowed control, and a floating DIV is windowless, so the floating DIV will

always be behind the chart. I could also open a new window I suppose, but

what I'd really like is just a simple way to add a tooltip per-annotation

object, and failing that, a more robust ShowBalloon :-)

Thanks!

-Daniel

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