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allow custom slide numbering functions

This commit is contained in:
Dougal J. Sutherland 2019-01-31 18:28:38 +00:00
parent aa8be6829c
commit 43d1c71107
1 changed files with 32 additions and 24 deletions
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56
js/reveal.js
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@ -3257,40 +3257,48 @@
* "h/v": horizontal / vertical slide number * "h/v": horizontal / vertical slide number
* "c": flattened slide number * "c": flattened slide number
* "c/t": flattened slide number / total slides * "c/t": flattened slide number / total slides
*
* Alternatively, config.slideNumber can be a function returning a
* three-element array with arguments to formatSlideNumber().
*/ */
function updateSlideNumber() { function updateSlideNumber() {
// Update slide number if enabled // Update slide number if enabled
if( config.slideNumber && dom.slideNumber ) { if( config.slideNumber && dom.slideNumber ) {
var value = []; var value;
var format = 'h.v'; var format = 'h.v';
// Check if a custom number format is available if ( typeof config.slideNumber === 'function' ) {
if( typeof config.slideNumber === 'string' ) { value = config.slideNumber();
format = config.slideNumber; } else {
} // Check if a custom number format is available
if( typeof config.slideNumber === 'string' ) {
format = config.slideNumber;
}
// If there are ONLY vertical slides in this deck, always use // If there are ONLY vertical slides in this deck, always use
// a flattened slide number // a flattened slide number
if( !/c/.test( format ) && dom.wrapper.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR ).length === 1 ) { if( !/c/.test( format ) && dom.wrapper.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR ).length === 1 ) {
format = 'c'; format = 'c';
} }
switch( format ) { value = [];
case 'c': switch( format ) {
value.push( getSlidePastCount() + 1 ); case 'c':
break; value.push( getSlidePastCount() + 1 );
case 'c/t': break;
value.push( getSlidePastCount() + 1, '/', getTotalSlides() ); case 'c/t':
break; value.push( getSlidePastCount() + 1, '/', getTotalSlides() );
case 'h/v': break;
value.push( indexh + 1 ); case 'h/v':
if( isVerticalSlide() ) value.push( '/', indexv + 1 ); value.push( indexh + 1 );
break; if( isVerticalSlide() ) value.push( '/', indexv + 1 );
default: break;
value.push( indexh + 1 ); default:
if( isVerticalSlide() ) value.push( '.', indexv + 1 ); value.push( indexh + 1 );
if( isVerticalSlide() ) value.push( '.', indexv + 1 );
}
} }
dom.slideNumber.innerHTML = formatSlideNumber( value[0], value[1], value[2] ); dom.slideNumber.innerHTML = formatSlideNumber( value[0], value[1], value[2] );