present: add support for full screen mode

[lucor]

This pull request add the -fullscreen flag to enable full screen mode (default: false). When enabled all the slides except the current one are hidden.

Fixes golang/go#12634 Fixes golang/go#18299

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This PR (HEAD: 1c65b8c7d8486976be44d0294ae5832cd8221087) has been imported to Gerrit for code review.

Please visit https://go-review.googlesource.com/#/c/tools/+/101956 to see it.

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Message from Gerrit Bot:

Uploaded patch set 2: Commit message was updated.

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Message from Tobias Klauser:

Patch Set 2:

(3 comments)

Thanks. Please see a few comments regarding the commit message format.

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Message from Gerrit Bot:

Uploaded patch set 3: Commit message was updated.

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Message from Luca Corbo:

Patch Set 3:

(3 comments)

I've updated the commit message format. Thanks for your feedback.

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Message from Tobias Klauser:

Patch Set 3: Code-Review+1

(1 comment)

One small nit, otherwise LGTM.

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Message from Luca Corbo:

Patch Set 3:

(1 comment)

Patch Set 3: Code-Review+1

(1 comment)

One small nit, otherwise LGTM.

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Message from Tobias Klauser:

Patch Set 3:

(1 comment)

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[ebenoist]

This would be super useful, can this be merged?

[jonaz]

Whats holding this back? Would be nice to not have to zoom the browser every time i do a presentation...

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Message from Gerrit User 19560:

Patch Set 2:

(3 comments)

Thanks. Please see a few comments regarding the commit message format.

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Message from Gerrit User 26935:

Patch Set 3:

(3 comments)

I've updated the commit message format. Thanks for your feedback.

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Message from Gerrit User 19560:

Patch Set 3: Code-Review+1

(1 comment)

One small nit, otherwise LGTM.

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Message from Gerrit User 26935:

Patch Set 3:

(1 comment)

Patch Set 3: Code-Review+1

(1 comment)

One small nit, otherwise LGTM.

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Message from Gerrit User 19560:

Patch Set 3:

(1 comment)

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