[OS X TeX] transparency

[Roussanka Loukanova]

Hi again,

On Mon, 25 Feb 2008, Alessandro Languasco wrote:

> Hi Roussanka,
> first I changed a little bit the image as bruno suggested;

Which application did you use for exporting the image into png format so 
that to bring in transparency?

Roussanka

> then I used the package wallpaper (already installed usifn MacTeX)
> and its command
>
> \ThisCenterWallPaper{0.5}{modified-logo}
>
> after a newpage command (I just wanted the logo on the second page)
>
> That's all !
>
> Alessandro
>
> On 25/feb/08, at 01:15, Roussanka Loukanova wrote:
>
>> Hi Alessandro,
>> 
>> What latex code did you use to get the command \includegraphics making the 
>> png image background, i.e. to be able to get the text over it?
>> 
>> Roussanka
>> 
>> On Sun, 24 Feb 2008, Alessandro Languasco wrote:
>> 
>> > dear Bruno, your remark solved the problem !!
>> > 
>> > Thanks again !
>> > 
>> >  Alessandro
>> > 
>> > On 24/feb/08, at 10:15, Bruno Voisin wrote:
>> > 
>> > > Le 24 févr. 08 à 10:01, Alessandro Languasco a écrit :
>> > > >  So it would be great to pass a transparency factor to the > 
>> > > >  \includegraphics command,
>> > > >  but it seems to me that the graphicx package does not support
>> > > >  this option... so I was wondering if some other
>> > > >  package does.
>> > > Not sure it can help, but still: the documentation of pdfTeX 
>> > > /usr/local/texlive/2007/texmf/doc/pdftex/manual/pdftex-a.pdf says on p. 
>> > > 40
>> > > Since pdfTEX 1.30.0 also the alpha-channel of png images is processed 
>> > > if available; this allows
>> > > embedding of images with simple transparency
>> > > So it seems that if you can prepare a png version of the logo with the 
>> > > required transparency, then this transparency will be honoured once the 
>> > > png file has been included in the pdfteX output. Or did I misunderstand 
>> > > something?
>> > > Bruno Voisin
>> > > 
>> 
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>
> On 25/feb/08, at 01:15, Roussanka Loukanova wrote:
>
>> Hi Alessandro,
>> 
>> What latex code did you use to get the command \includegraphics making the 
>> png image background, i.e. to be able to get the text over it?
>> 
>> Roussanka
>> 
>> On Sun, 24 Feb 2008, Alessandro Languasco wrote:
>> 
>> > dear Bruno, your remark solved the problem !!
>> > 
>> > Thanks again !
>> > 
>> >  Alessandro
>> > 
>> > On 24/feb/08, at 10:15, Bruno Voisin wrote:
>> > 
>> > > Le 24 févr. 08 à 10:01, Alessandro Languasco a écrit :
>> > > >  So it would be great to pass a transparency factor to the > 
>> > > >  \includegraphics command,
>> > > >  but it seems to me that the graphicx package does not support
>> > > >  this option... so I was wondering if some other
>> > > >  package does.
>> > > Not sure it can help, but still: the documentation of pdfTeX 
>> > > /usr/local/texlive/2007/texmf/doc/pdftex/manual/pdftex-a.pdf says on p. 
>> > > 40
>> > > Since pdfTEX 1.30.0 also the alpha-channel of png images is processed 
>> > > if available; this allows
>> > > embedding of images with simple transparency
>> > > So it seems that if you can prepare a png version of the logo with the 
>> > > required transparency, then this transparency will be honoured once the 
>> > > png file has been included in the pdfteX output. Or did I misunderstand 
>> > > something?
>> > > Bruno Voisin
>> > >