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disable zoom plugin while in overview mode

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This commit is contained in:
Hakim El Hattab 2013-02-03 13:21:42 -05:00
parent c21e6bbfed
commit 080fb3cd33
1 changed files with 26 additions and 21 deletions
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47
plugin/zoom-js/zoom.js
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@ -1,29 +1,34 @@
// Custom reveal.js integration
(function(){
document.querySelector( '.reveal' ).addEventListener( 'click', function( event ) {
if( event.altKey ) {
var isEnabled = true;
document.querySelector( '.reveal' ).addEventListener( 'mousedown', function( event ) {
if( event.altKey && isEnabled ) {
event.preventDefault();
zoom.to({ element: event.target, pan: false });
}
} );
Reveal.addEventListener( 'overviewshown', function() { isEnabled = false; } );
Reveal.addEventListener( 'overviewhidden', function() { isEnabled = true; } );
})();
/*!
* zoom.js 0.2 (modified version for use with reveal.js)
* http://lab.hakim.se/zoom-js
* MIT licensed
*
*
* Copyright (C) 2011-2012 Hakim El Hattab, http://hakim.se
*/
var zoom = (function(){
// The current zoom level (scale)
var level = 1;
// The current mouse position, used for panning
var mouseX = 0,
mouseY = 0;
// Timeout before pan is activated
var panEngageTimeout = -1,
panUpdateInterval = -1;
@ -36,7 +41,7 @@ var zoom = (function(){
'msTransform' in document.body.style ||
'OTransform' in document.body.style ||
'transform' in document.body.style;
if( supportsTransforms ) {
// The easing that will be applied when we zoom in/out
document.body.style.transition = 'transform 0.8s ease';
@ -45,7 +50,7 @@ var zoom = (function(){
document.body.style.MozTransition = '-moz-transform 0.8s ease';
document.body.style.WebkitTransition = '-webkit-transform 0.8s ease';
}
// Zoom out if the user hits escape
document.addEventListener( 'keyup', function( event ) {
if( level !== 1 && event.keyCode === 27 ) {
@ -62,21 +67,21 @@ var zoom = (function(){
}, false );
/**
* Applies the CSS required to zoom in, prioritizes use of CSS3
* Applies the CSS required to zoom in, prioritizes use of CSS3
* transforms but falls back on zoom for IE.
*
* @param {Number} pageOffsetX
* @param {Number} pageOffsetY
* @param {Number} elementOffsetX
* @param {Number} elementOffsetY
* @param {Number} scale
*
* @param {Number} pageOffsetX
* @param {Number} pageOffsetY
* @param {Number} elementOffsetX
* @param {Number} elementOffsetY
* @param {Number} scale
*/
function magnify( pageOffsetX, pageOffsetY, elementOffsetX, elementOffsetY, scale ) {
if( supportsTransforms ) {
var origin = pageOffsetX +'px '+ pageOffsetY +'px',
transform = 'translate('+ -elementOffsetX +'px,'+ -elementOffsetY +'px) scale('+ scale +')';
document.body.style.transformOrigin = origin;
document.body.style.OTransformOrigin = origin;
document.body.style.msTransformOrigin = origin;
@ -121,7 +126,7 @@ var zoom = (function(){
}
/**
* Pan the document when the mosue cursor approaches the edges
* Pan the document when the mosue cursor approaches the edges
* of the window.
*/
function pan() {
@ -129,7 +134,7 @@ var zoom = (function(){
rangeX = window.innerWidth * range,
rangeY = window.innerHeight * range,
scrollOffset = getScrollOffset();
// Up
if( mouseY < rangeY ) {
window.scroll( scrollOffset.x, scrollOffset.y - ( 1 - ( mouseY / rangeY ) ) * ( 14 / level ) );
@ -159,7 +164,7 @@ var zoom = (function(){
return {
/**
* Zooms in on either a rectangle or HTML element.
*
*
* @param {Object} options
* - element: HTML element to zoom in on
* OR
@ -232,7 +237,7 @@ var zoom = (function(){
if( currentOptions && currentOptions.element ) {
scrollOffset.x -= ( window.innerWidth - ( currentOptions.width * currentOptions.scale ) ) / 2;
}
magnify( scrollOffset.x, scrollOffset.y, 0, 0, 1 );
level = 1;
@ -241,11 +246,11 @@ var zoom = (function(){
// Alias
magnify: function( options ) { this.to( options ) },
reset: function() { this.out() },
zoomLevel: function() {
return level;
}
}
})();