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new postMessage-based notes plugin, moved node-based notes to notes-server (#190)

edit
Hakim El Hattab 2012-10-20 20:40:52 -04:00
parent 5188951a0f 070a1e3ee5
commit c6f8a44edf
7 changed files with 253 additions and 29 deletions
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33
README.md
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@ -105,10 +105,9 @@ Reveal.initialize({
{ src: 'lib/js/data-markdown.js', condition: function() { return !!document.querySelector( '[data-markdown]' ); } },
{ src: 'lib/js/showdown.js', condition: function() { return !!document.querySelector( '[data-markdown]' ); } },
// Zoom in and out with Alt+click
{ src: 'plugin/zoom-js/zoom.js', condition: function() { return !!document.body.classList; } },
// Speaker notes support
{ src: 'plugin/speakernotes/client.js', async: true, condition: function() { return window.location.host === 'localhost:1947'; } },
{ src: '/socket.io/socket.io.js', async: true, condition: function() { return window.location.host === 'localhost:1947'; } },
{ src: 'plugin/zoom-js/zoom.js', async: true, condition: function() { return !!document.body.classList; } },
// Speaker notes
{ src: 'plugin/notes/notes.js', async: true, condition: function() { return !!document.body.classList; } }
]
});
```
@ -230,27 +229,23 @@ Here's an example of an exported presentation that's been uploaded to SlideShare
![Chrome Print Settings](https://s3.amazonaws.com/hakim-static/reveal-js/pdf-print-settings.png)
## Speaker Notes
If you're interested in using speaker notes, reveal.js comes with a Node server that allows you to deliver your presentation in one browser while viewing speaker notes in another.
reveal.js comes with a speaker notes plugin which can be used to present per-slide notes in a separate browser window. The notes window also gives you a preview of the next upcoming slide so it may be helpful even if you haven't written any notes. Append ```?notes``` to presentation URL or press the 's' key on your keyboard to open the notes window.
To include speaker notes in your presentation, simply add an `<aside class="notes">` element to any slide. These notes will be hidden in the main presentation view.
Notes are written using the following markup structure:
It's also possible to write your notes with Markdown. To enable Markdown, add the ```data-markdown``` attribute to your note ```<aside>``` elements.
```html
<section>
<h2>Some Slide</h2>
You'll also need to [install Node.js](http://nodejs.org/); then, install the server dependencies by running `npm install`.
<aside class="notes">
Oh hey, these are some notes. They'll be hidden in your presentation, but you can see them if you open the speaker notes window (hit 's' on your keyboard).
</aside>
</section>
```
Once Node.js and the dependencies are installed, run the following command from the root directory:
node plugin/speakernotes
By default, the slides will be served at [localhost:1947](http://localhost:1947).
You can change the appearance of the speaker notes by editing the file at `plugin/speakernotes/notes.html`.
### Known Issues
- The notes page is supposed to show the current slide and the next slide, but when it first starts, it always shows the first slide in both positions.
## Folder Structure
- **css/** Core styles without which the project does not function

8
index.html
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@ -51,7 +51,7 @@
</p>
<aside class="notes">
Oh hey, these are some notes. They'll be hidden in your presentation, but you can see them if you run the speaker notes server.
Oh hey, these are some notes. They'll be hidden in your presentation, but you can see them if you open the speaker notes window (hit 's' on your keyboard).
</aside>
</section>
@ -356,12 +356,10 @@ function linkify( selector ) {
{ src: 'lib/js/classList.js', condition: function() { return !document.body.classList; } },
{ src: 'lib/js/showdown.js', condition: function() { return !!document.querySelector( '[data-markdown]' ); } },
{ src: 'lib/js/data-markdown.js', condition: function() { return !!document.querySelector( '[data-markdown]' ); } },
{ src: 'plugin/zoom-js/zoom.js', condition: function() { return !!document.body.classList; } },
{ src: '/socket.io/socket.io.js', async: true, condition: function() { return window.location.host === 'localhost:1947'; } },
{ src: 'plugin/speakernotes/client.js', async: true, condition: function() { return window.location.host === 'localhost:1947'; } }
{ src: 'plugin/zoom-js/zoom.js', async: true, condition: function() { return !!document.body.classList; } },
{ src: 'plugin/notes/notes.js', async: true, condition: function() { return !!document.body.classList; } }
]
});
</script>
</body>

0
plugin/speakernotes/client.js → plugin/notes-server/client.js
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4
plugin/speakernotes/index.js → plugin/notes-server/index.js
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@ -32,12 +32,12 @@ app.get("/", function(req, res) {
app.get("/notes/:socketId", function(req, res) {
fs.readFile(opts.baseDir + 'plugin/speakernotes/notes.html', function(err, data) {
fs.readFile(opts.baseDir + 'plugin/notes-server/notes.html', function(err, data) {
res.send(Mustache.to_html(data.toString(), {
socketId : req.params.socketId
}));
});
// fs.createReadStream(opts.baseDir + 'speakernotes/notes.html').pipe(res);
// fs.createReadStream(opts.baseDir + 'notes-server/notes.html').pipe(res);
});
// Actually listen

0
plugin/speakernotes/notes.html → plugin/notes-server/notes.html
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157
plugin/notes/notes.html 100644
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@ -0,0 +1,157 @@
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>reveal.js - Slide Notes</title>
<style>
body {
font-family: Helvetica;
}
#notes {
font-size: 24px;
width: 640px;
margin-top: 5px;
}
#wrap-current-slide {
width: 640px;
height: 512px;
float: left;
overflow: hidden;
}
#current-slide {
width: 1280px;
height: 1024px;
border: none;
-webkit-transform-origin: 0 0;
-moz-transform-origin: 0 0;
-ms-transform-origin: 0 0;
-o-transform-origin: 0 0;
transform-origin: 0 0;
-webkit-transform: scale(0.5);
-moz-transform: scale(0.5);
-ms-transform: scale(0.5);
-o-transform: scale(0.5);
transform: scale(0.5);
}
#wrap-next-slide {
width: 448px;
height: 358px;
float: left;
margin: 0 0 0 10px;
overflow: hidden;
}
#next-slide {
width: 1280px;
height: 1024px;
border: none;
-webkit-transform-origin: 0 0;
-moz-transform-origin: 0 0;
-ms-transform-origin: 0 0;
-o-transform-origin: 0 0;
transform-origin: 0 0;
-webkit-transform: scale(0.35);
-moz-transform: scale(0.35);
-ms-transform: scale(0.35);
-o-transform: scale(0.35);
transform: scale(0.35);
}
.slides {
position: relative;
margin-bottom: 10px;
border: 1px solid black;
border-radius: 2px;
background: rgb(28, 30, 32);
}
.slides span {
position: absolute;
top: 3px;
left: 3px;
font-weight: bold;
font-size: 14px;
color: rgba( 255, 255, 255, 0.9 );
}
</style>
</head>
<body>
<div id="wrap-current-slide" class="slides">
<iframe src="../../index.html" width="1280" height="1024" id="current-slide"></iframe>
</div>
<div id="wrap-next-slide" class="slides">
<iframe src="../../index.html" width="640" height="512" id="next-slide"></iframe>
<span>UPCOMING:</span>
</div>
<div id="notes"></div>
<script src="../../lib/js/showdown.js"></script>
<script>
window.addEventListener( 'load', function() {
(function( window, undefined ) {
var notes = document.getElementById( 'notes' ),
currentSlide = document.getElementById( 'current-slide' ),
nextSlide = document.getElementById( 'next-slide' );
window.addEventListener( 'message', function( event ) {
var data = JSON.parse( event.data );
if( data.markdown ) {
notes.innerHTML = (new Showdown.converter()).makeHtml( data.notes );
}
else {
notes.innerHTML = data.notes;
}
// Kill the slide listeners while responding to the event
removeSlideListeners();
// Update the note slides
currentSlide.contentWindow.Reveal.slide( data.indexh, data.indexv );
nextSlide.contentWindow.Reveal.slide( data.nextindexh, data.nextindexv );
// Resume listening on the next cycle
setTimeout( addSlideListeners, 1 );
}, false );
function addSlideListeners() {
currentSlide.contentWindow.Reveal.addEventListener( 'slidechanged', onNotesSlideChange, false );
nextSlide.contentWindow.Reveal.addEventListener( 'slidechanged', onNotesSlideChange, false );
}
function removeSlideListeners() {
currentSlide.contentWindow.Reveal.removeEventListener( 'slidechanged', onNotesSlideChange, false );
nextSlide.contentWindow.Reveal.removeEventListener( 'slidechanged', onNotesSlideChange, false );
}
function onNotesSlideChange( event ) {
window.opener.postMessage( JSON.stringify({
indexh : event.indexh,
indexv : event.indexv
}), '*' );
}
addSlideListeners();
})( window );
}, false );
</script>
</body>
</html>

74
plugin/notes/notes.js 100644
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@ -0,0 +1,74 @@
/**
* Handles opening of and synchronization with the reveal.js
* notes window.
*/
var RevealNotes = (function() {
function openNotes() {
var notesPopup = window.open( 'plugin/notes/notes.html', 'reveal.js - Notes', 'width=1120,height=850' );
Reveal.addEventListener( 'slidechanged', post );
// Posts the current slide data to the notes window
function post() {
var slideElement = Reveal.getCurrentSlide(),
indexh = Reveal.getIndices().h,
indexv = Reveal.getIndices().v,
nextindexh,
nextindexv;
if( slideElement.nextElementSibling && slideElement.parentNode.nodeName == 'SECTION' ) {
nextindexh = indexh;
nextindexv = indexv + 1;
} else {
nextindexh = indexh + 1;
nextindexv = 0;
}
var notes = slideElement.querySelector( 'aside.notes' );
var slideData = {
notes : notes ? notes.innerHTML : '',
indexh : indexh,
indexv : indexv,
nextindexh : nextindexh,
nextindexv : nextindexv,
markdown : notes ? typeof notes.getAttribute( 'data-markdown' ) === 'string' : false
};
notesPopup.postMessage( JSON.stringify( slideData ), '*' );
}
// The main presentation is kept in sync when navigating the
// note slides so that the popup may be used as a remote
window.addEventListener( 'message', function( event ) {
var data = JSON.parse( event.data );
if( data && typeof data.indexh === 'number' && typeof data.indexv === 'number' ) {
Reveal.slide( data.indexh, data.indexv );
}
} );
// Navigate to the current slide when the notes are loaded
notesPopup.addEventListener( 'load', post, false );
}
// If the there's a 'notes' query set, open directly
if( window.location.search.match(/(\?|\&)notes/gi ) !== null ) {
openNotes();
}
// Open the notes when the 's' key is hit
document.addEventListener( 'keydown', function( event ) {
// Disregard the event if the target is editable or a
// modifier is present
if ( document.querySelector( ':focus' ) !== null || event.shiftKey || event.altKey || event.ctrlKey || event.metaKey ) return;
if( event.keyCode === 83 ) {
event.preventDefault();
openNotes();
}
}, false );
return { open: openNotes }
})();