* Repeat backgrounds on slides
@ 2020-02-13 8:19 juh
2020-02-13 19:39 ` Wolfgang Schuster
0 siblings, 1 reply; 5+ messages in thread
From: juh @ 2020-02-13 8:19 UTC (permalink / raw)
To: mailing list for ConTeXt users
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Hi all,
I am a little bit confused as I never had this problem, although I often use
backgrounds and layers.
\definelayer[bg:hs2020-mond]
[x=0, y=0, width=\paperwidth, height=\paperheight]
\setlayer[bg:hs2020-mond]
[x=0mm, y=0mm]
{\externalfigure[background.jpg][height=\paperwidth]}
Ususally I call the background after a head command like \starttitle or when I
create slides like this
\startslide[title={foobar}]
\setupbackgrounds[page][background=bg:hs2020-mond]
...
\stopslide
The problem is that I cannot call the background on another slide.
It seems as if the layer is gone after the first usage.
So in this example the second bg:hs2020-mond would not print.
\startslide[title={foobar}]
\setupbackgrounds[page][background=bg:hs2020-mond]
...
\stopslide
\startslide[title={foobar}]
\setupbackgrounds[page][background=bg:other]
...
\stopslide
\startslide[title={foobar}]
\setupbackgrounds[page][background=bg:hs2020-mond]
...
\stopslide
TIA
juh
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* Re: Repeat backgrounds on slides
2020-02-13 8:19 Repeat backgrounds on slides juh
@ 2020-02-13 19:39 ` Wolfgang Schuster
2020-02-14 8:10 ` Jan U. Hasecke
0 siblings, 1 reply; 5+ messages in thread
From: Wolfgang Schuster @ 2020-02-13 19:39 UTC (permalink / raw)
To: ntg-context
On Thu, 13 Feb 2020 09:19:10 +0100
juh <juh+ntg-context@mailbox.org> wrote:
> Hi all,
>
> I am a little bit confused as I never had this problem, although I often use
> backgrounds and layers.
>
> \definelayer[bg:hs2020-mond]
> [x=0, y=0, width=\paperwidth, height=\paperheight]
>
> \setlayer[bg:hs2020-mond]
> [x=0mm, y=0mm]
> {\externalfigure[background.jpg][height=\paperwidth]}
>
> Ususally I call the background after a head command like \starttitle or when I
> create slides like this
>
> \startslide[title={foobar}]
> \setupbackgrounds[page][background=bg:hs2020-mond]
> ...
> \stopslide
>
> The problem is that I cannot call the background on another slide.
> It seems as if the layer is gone after the first usage.
This is normal behaviour for layers but you can repeat it on every page with
\definelayer [bg:...] [state=repeat]
In your case a simple overlay is the simpler solution to get repeated images on every page, i.e.
\defineoverlay [bg:hs2020-mond] [{\externalfigure[background.jpg][height=\paperheight]}]
or
\defineoverlay [bg:hs2020-mond] [\overlayfigure{background.jpg}]
Wolfgang
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___________________________________________________________________________________
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* Re: Repeat backgrounds on slides
2020-02-13 19:39 ` Wolfgang Schuster
@ 2020-02-14 8:10 ` Jan U. Hasecke
2020-02-14 18:53 ` Wolfgang Schuster
0 siblings, 1 reply; 5+ messages in thread
From: Jan U. Hasecke @ 2020-02-14 8:10 UTC (permalink / raw)
To: ntg-context
Am 13.02.20 um 20:39 schrieb Wolfgang Schuster:
>
> This is normal behaviour for layers but you can repeat it on every page with
>
> \definelayer [bg:...] [state=repeat]
Thanks. There was a dark idea of this in the back of my brain.
>
> In your case a simple overlay is the simpler solution to get repeated images on every page, i.e.
>
> \defineoverlay [bg:hs2020-mond] [{\externalfigure[background.jpg][height=\paperheight]}]
>
> or
>
> \defineoverlay [bg:hs2020-mond] [\overlayfigure{background.jpg}]
Is this defining and setting in one command? Can I set the offset in
this way, too?
juh
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* Re: Repeat backgrounds on slides
2020-02-14 8:10 ` Jan U. Hasecke
@ 2020-02-14 18:53 ` Wolfgang Schuster
2020-02-15 13:56 ` Jan U. Hasecke
0 siblings, 1 reply; 5+ messages in thread
From: Wolfgang Schuster @ 2020-02-14 18:53 UTC (permalink / raw)
To: ntg-context
On Fri, 14 Feb 2020 09:10:22 +0100
"Jan U. Hasecke" <juh+ntg-context@mailbox.org> wrote:
> Am 13.02.20 um 20:39 schrieb Wolfgang Schuster:
>
> >
> > This is normal behaviour for layers but you can repeat it on every page with
> >
> > \definelayer [bg:...] [state=repeat]
>
> Thanks. There was a dark idea of this in the back of my brain.
>
> >
> > In your case a simple overlay is the simpler solution to get repeated images on every page, i.e.
> >
> > \defineoverlay [bg:hs2020-mond] [{\externalfigure[background.jpg][height=\paperheight]}]
> >
> > or
> >
> > \defineoverlay [bg:hs2020-mond] [\overlayfigure{background.jpg}]
>
> Is this defining and setting in one command?
You can also pass a variable as argument in the second argument,
e.g. in the following example I set the background image with
the start of each new slide.
\setupexternalfigures[location=default]
\defineoverlay
[SlideBackground]
[\doifsomething
{\structureuservariable{background}}
{\externalfigure[\structureuservariable{background}][factor=max]}]
\setuppapersize[S6]
\setupbackgrounds[page][background=SlideBackground]
%\setuppapersize[S6][S6,oversized]
%\setupbackgrounds[paper][background=SlideBackground]
%\setuplayout[location=middle]
\definehead[Slide][chapter]
\starttext
\startSlide[title=Cow][background=cow]
\dorecurse{3}{\dontleavehmode\page}
\stopSlide
\startSlide[title=Hacker][background=hacker]
\dorecurse{3}{\dontleavehmode\page}
\stopSlide
\stoptext
> Can I set the offset in this way, too?
It depends on your requirements, to get equal bleed on all
four sides you can just increase the width/height of the image
with the offset value.
Wolfgang
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!
maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
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* Re: Repeat backgrounds on slides
2020-02-14 18:53 ` Wolfgang Schuster
@ 2020-02-15 13:56 ` Jan U. Hasecke
0 siblings, 0 replies; 5+ messages in thread
From: Jan U. Hasecke @ 2020-02-15 13:56 UTC (permalink / raw)
To: ntg-context
\structureuservariable – this is really cool.
Thanks a lot Wolfgang.
juh
Am 14.02.20 um 19:53 schrieb Wolfgang Schuster:
> \setupexternalfigures[location=default]
>
> \defineoverlay
> [SlideBackground]
> [\doifsomething
> {\structureuservariable{background}}
> {\externalfigure[\structureuservariable{background}][factor=max]}]
>
> \setuppapersize[S6]
> \setupbackgrounds[page][background=SlideBackground]
>
> %\setuppapersize[S6][S6,oversized]
> %\setupbackgrounds[paper][background=SlideBackground]
> %\setuplayout[location=middle]
>
> \definehead[Slide][chapter]
>
> \starttext
>
> \startSlide[title=Cow][background=cow]
> \dorecurse{3}{\dontleavehmode\page}
> \stopSlide
>
> \startSlide[title=Hacker][background=hacker]
> \dorecurse{3}{\dontleavehmode\page}
> \stopSlide
>
> \stoptext
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!
maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
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archive : https://bitbucket.org/phg/context-mirror/commits/
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___________________________________________________________________________________
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2020-02-13 8:19 Repeat backgrounds on slides juh
2020-02-13 19:39 ` Wolfgang Schuster
2020-02-14 8:10 ` Jan U. Hasecke
2020-02-14 18:53 ` Wolfgang Schuster
2020-02-15 13:56 ` Jan U. Hasecke
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