Shows keyboard shorcuts overlay on pressing question mark
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131c00689a
commit
75a53da9e5
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@ -1729,6 +1729,39 @@ body {
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}
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.reveal .preview-link-overlay .viewport .shortcuts {
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-webkit-column-count: 2;
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-moz-column-count: 2;
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column-count: 2;
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font-size: 20px;
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height: 100%;
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margin-left: 35%;
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margin-top: 20px;
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text-align: center;
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}
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.reveal .preview-link-overlay .viewport .shortcuts table {
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border: 1px solid #fff;
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border-collapse: collapse;
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font-size: 14px;
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}
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.reveal .preview-link-overlay .viewport .shortcuts table th{
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border: 1px solid #fff;
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height: 30px;
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width: 200px;
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padding: 10px;
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vertical-align: middle;
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}
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.reveal .preview-link-overlay .viewport .shortcuts table tr td{
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border: 1px solid #fff;
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height: 30px;
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vertical-align: middle;
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padding: 5px;
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}
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/*********************************************
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* PLAYBACK COMPONENT
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65
js/reveal.js
65
js/reveal.js
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@ -177,6 +177,20 @@ var Reveal = (function(){
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startCount: 0,
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captured: false,
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threshold: 40
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},
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// Holds information about the keyboard shortcuts
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keyboard_shortcuts = {
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'p': "Previous slide",
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'n': "Next slide",
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'h': "Navigate left",
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'l': "Navigate right",
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'k': "Navigate up",
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'j': "Navigate down",
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'Home': "First slide",
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'End': "Last slide",
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'b': "Pause",
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'f': "Fullscreen"
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};
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/**
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@ -646,6 +660,7 @@ var Reveal = (function(){
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if( config.keyboard ) {
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document.addEventListener( 'keydown', onDocumentKeyDown, false );
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document.addEventListener( 'keypress', onDocumentKeyPress, false );
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}
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if( config.progress && dom.progress ) {
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@ -689,6 +704,7 @@ var Reveal = (function(){
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eventsAreBound = false;
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document.removeEventListener( 'keydown', onDocumentKeyDown, false );
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document.removeEventListener( 'keypress', onDocumentKeyPress, false );
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window.removeEventListener( 'hashchange', onWindowHashChange, false );
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window.removeEventListener( 'resize', onWindowResize, false );
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@ -1019,6 +1035,44 @@ var Reveal = (function(){
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}
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/**
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* Opens a overlay window for the keyboard shortcuts.
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*/
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function openShortcutsOverlay() {
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closePreview();
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dom.preview = document.createElement( 'div' );
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dom.preview.classList.add( 'preview-link-overlay' );
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dom.wrapper.appendChild( dom.preview );
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var html = '<h5>Keyboard Shortcuts</h5><br/>';
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html += '<table> <th>KEY</th> <th>ACTION</th>';
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for( var key in keyboard_shortcuts ) {
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html += '<tr> <td>' + key + '</td> <td>' + keyboard_shortcuts[key] + '</td> </tr>'
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}
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html += '</table>';
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dom.preview.innerHTML = [
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'<header>',
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'<a class="close" href="#"><span class="icon"></span></a>',
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'</header>',
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'<div class="viewport">',
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'<div class="shortcuts">'+html+'</div>',
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'</div>'
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].join('');
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dom.preview.querySelector( '.close' ).addEventListener( 'click', function( event ) {
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closePreview();
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event.preventDefault();
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}, false );
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setTimeout( function() {
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dom.preview.classList.add( 'visible' );
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}, 1 );
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}
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/**
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* Applies JavaScript-controlled layout rules to the
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* presentation.
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@ -2642,6 +2696,17 @@ var Reveal = (function(){
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}
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/**
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* Handler for the document level 'keypress' event.
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*/
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function onDocumentKeyPress( event ) {
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// Check if the pressed key is question mark
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if( event.shiftKey && event.charCode == 63 ) {
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openShortcutsOverlay();
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}
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}
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/**
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* Handler for the document level 'keydown' event.
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*/
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