Thanks a lot for providing the requested information.
It is working fine with pango.
On Wed, Dec 26, 2012 at 10:18 AM, Brian Matherly <[email protected]>wrote:
> >It works based on number of characters in the text.
>
> >When I use geometry as 0/0:50%x100%:100, it does not place text at
> 0(zero'th) pixel if the
> > * text has less number of characters (say 4 characters)
> > * text alignment is right
> What I need is, I need to place text at any position on the frame
> with any number of characters and with center, left and right alignments.
> >
> >I was trying to specify X position in geometry for center alignment as
> follows
> > * X = Xposition - ( frameWidth - textWidth ) / 2
> > * Y = 0
> > * W = 100%
> > * H = 100%For example, if
> >Xposition = 0 ( text should be placed at 0 (zero'th) pixel)
> >frameWidth = 854
> >textWidth = 285
> >
> >Now, X will be -284 and geometry will be -284/0:100%x100%
> >
> >If I want place the same text with center alignment at 100 th pixel (
> Xposition = 100 ) on the frame then geometry will be -184/0:100%x100%
> >
> >
> >For right alignment, X = Xposition - ( frameWidth - textWidth )
> >
> >
> >If I could get X value using these formulas, I think text is being placed
> close to required position.
> >For this the thing what I need is, textWidth and it varies from number of
> characters.
> >Is there any way to get value of text width ?
>
>
> I don't think there is any way for you to get the value of "textWidth". I
> can think of two options:
>
> 1) Specify a fixed width font (courier) so that you can manually align the
> text by adding spaces in front of words.
>
> 2) I suppose Dan was right about you wanting to specify separate text and
> geometry alignment. In my opinion, this is an esoteric use case and not
> worth adding to the dynamic text filter (especially if you aren't using the
> keyword substitution feature). You should just build the
> producer/transition combination yourself. Consider this melt command:
>
> ./melt colour:blue out=50 -track pango:"+lineone~line2.txt" out=50
> align=right -transition composite in=0 out=50 halign=left valign=center
> geometry="0/0:50%x100%:100"
>
> You can change the pango align attribute to be anything you want, as long
> as the composite halign attribute is always "left", the leftmost pixel will
> be at "0".
>
> ~BM
>
>
--
-Satya.
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